Selenium (Se) is an essential trace element. Autoimmune thyroid diseases (AITD) are destructive inflammatory or anti-receptor autoimmune diseases characterized by reactivity to self-thyroid antigens. However, the ...Selenium (Se) is an essential trace element. Autoimmune thyroid diseases (AITD) are destructive inflammatory or anti-receptor autoimmune diseases characterized by reactivity to self-thyroid antigens. However, the effects of Se on the cytokines in AITD are still unclear. So we researched the role of Selenium (Se) and Thl/Th2 cytokine productions in the pathogenesis of autoimmune thyroid diseases (AITD).展开更多
OBJECTIVE Leukotriene B4(LTB4)biosynthesis and subsequently neutrophilic inflammation may provide a potential strategy for the treatment of acute lung injury(ALI)or idiopathic pulmonary fibrosis(IPF).To provide a pote...OBJECTIVE Leukotriene B4(LTB4)biosynthesis and subsequently neutrophilic inflammation may provide a potential strategy for the treatment of acute lung injury(ALI)or idiopathic pulmonary fibrosis(IPF).To provide a potential strategy for the treatment of ALI or IPF,we identified potent inhibitors of Leukotriene A4 hydrolase(LTA4H),a key enzyme in the biosynthesis of LTB4.METHODS In this study,we identified two known histone deacetylase(HDAC)inhibitors,suberanilohydroxamic acid(SAHA)and its analogue 4-(dimethylamino)-N-[7-(hydroxyamino)-7-oxoheptyl]benzamide(M344),as effective inhibitors of LTA4H using enzymatic assay,thermofluor assay,and X-ray crystallographic investigation.We next tested the effect of SAHA and M344 on endogenous LTB4 biosynthesis in neutrophils by ELISA and neutrophil migration by transwell migration assay.A murine experimental model of ALI was induced by lipopolysaccharide(LPS)inhalation.Histopathological analysis of lung tissue using H&E staining revealed the serious pulmonary damage caused by LPS treatment and the effect of the SAHA.We next examined m RNA and protein levels of pro-inflammatory cytokines in lung tissue and bronchoalveolar lavage fluid using q RT-PCR and ELISA to further investigate the underlying mechanisms of anti-inflammatory activities by SAHA.We also investigated the effects of SAHA and M344 on a murine experimental model of bleomycin(BLM)-induced IPF model.RESULTS The results of enzymatic assay and X-ray crystallography showed that both SAHA and M344 bind to LTA4H,significantly decrease LTB4 levels in neutrophil,and markedly diminish early neutrophilic inflammation in mouse models of ALI and IPF under a clinical safety dose.CONCLUSION Collectively,SAHA and M344 would provide promising agents with well-known clinical safety for potential treatment in patients with ALI and IPF via pharmacologically inhibiting LAT4H and blocking LTB4 biosynthesis.展开更多
Bovine aortic endothelial cells(BAECs)were cultured with high glucose(33 mmol/L),4 mg/L green tea polyphenols(GTPs)or 4 mg/L GTPs co-treatment with high glucose for 24 h in the presence or absence of Bafilomycin...Bovine aortic endothelial cells(BAECs)were cultured with high glucose(33 mmol/L),4 mg/L green tea polyphenols(GTPs)or 4 mg/L GTPs co-treatment with high glucose for 24 h in the presence or absence of Bafilomycin-A1(BAF).We observed that high glucose increased the accumulation of LC3-II.Treatment with BAF did not further increase the accumulation of LC3-II.展开更多
Monosialoganglioside 1(GM1) is the main ganglioside subtype and has neuroprotective properties in the central nervous system. In this study, we aimed to determine whether GM1 alleviates neurotoxicity induced by mode...Monosialoganglioside 1(GM1) is the main ganglioside subtype and has neuroprotective properties in the central nervous system. In this study, we aimed to determine whether GM1 alleviates neurotoxicity induced by moderate and high concentrations of propofol combined with remifentanil in the immature central nervous system. Hippocampal neural stem cells were isolated from newborn Sprague-Dawley rats and treated with remifentanil(5, 10, 20 ng/m L) and propofol(1.0, 2.5, 5.0 μg/m L), and/or GM1(12.5, 25, 50 μg/m L). GM1 reversed combined propofol and remifentanil-induced decreases in the percentage of 5-bromodeoxyuridine(+) cells and also reversed the increase in apoptotic cell percentage during neural stem cell proliferation and differentiation. However, GM1 with combined propofol and remifentanil did not affect β-tubulin(+) or glial fibrillary acidic protein(+) cell percentage during neural stem cell differentiation. In conclusion, we show that GM1 alleviates the damaging effects of propofol combined with remifentanil at moderate and high exposure concentrations in neural stem cells in vitro, and exerts protective effects on the immature central nervous system.展开更多
To the Editor:I read with great interest the article by Cao et al[1] re- porting a potential therapeutic utility of p38 inhibitors for acute pancreatitis. Using a preclinical mouse model where acute pancreatitis was ...To the Editor:I read with great interest the article by Cao et al[1] re- porting a potential therapeutic utility of p38 inhibitors for acute pancreatitis. Using a preclinical mouse model where acute pancreatitis was induced by administra- tion of cerulein (a cholecystokinin analog derived from the tree frog Litoria caerulea), the authors reported that the p38 MAPK inhibitor SB203580, administered intra- peritoneally before and after the first administration of cerulein, relieved signs associated with acute pancreatitis, including decreased HSP60 and HSP70 expression, and serum IL-6, amylase and lipase activities. Although the study remains descriptive and pharmacodynamic aspects were not examined in depth, it still has a merit as it undoubtedly provides a basis for further investigation into the potential utility of targeting p38 signaling for acute pancreatitis, a common serious condition that can be life-threatening.展开更多
Cerebrovascular accident(CVA)or stroke is one of the world's leading causes of death and permanent disability.The high social and medical costs associated with this pathology mean there is an urgent need to find ef...Cerebrovascular accident(CVA)or stroke is one of the world's leading causes of death and permanent disability.The high social and medical costs associated with this pathology mean there is an urgent need to find effective therapies.Occlusion of the middle cerebral artery(MCAO),mainly by clots,is the origin of most CVAs in humans.展开更多
‘Tax reduction’must be one of the key words of the Chinese economy in 2018,during which various preferential tax policies were successively issued and tax-cut bonuses are continuously released.Since the beginning of...‘Tax reduction’must be one of the key words of the Chinese economy in 2018,during which various preferential tax policies were successively issued and tax-cut bonuses are continuously released.Since the beginning of the year,China has set a target of RMB 1.1 trillion in tax reductions throughout the year.In the second half of 2018,incremental policies were introduced.It is estimated that the annual economic burden will be reduced by more than RMB 1.3 trillion in 2018.展开更多
The government has decided on a two-pronged drive to solve thecountry’s protracted energy shortage by bolstering investment projectswhile tightening control power consumption.Power generating projects costing some 20...The government has decided on a two-pronged drive to solve thecountry’s protracted energy shortage by bolstering investment projectswhile tightening control power consumption.Power generating projects costing some 20 billion yuan (4.26 billion)make up about one-third of the total 68 large and medium-sized capitalconstruction projects approved recently by the State Council despite theausterity policy.All the projects are expected to be completed within threeto eight years.With the completion of the 20 large and medium-sizedprojects,10,500 MW of generating capacity and 530 km of 500 kV trans-mission lines and corresponding substations will be added to the nation’scombined installed generating and transmitting capacity.Three of the projects,with a total installed capacity of 4140 MW。展开更多
As main transportation and communication facilities,automo-biles contribute much convenience for people all over the world.However,they also bring about serious problem of pollution,espe-cially in urban areas where pe...As main transportation and communication facilities,automo-biles contribute much convenience for people all over the world.However,they also bring about serious problem of pollution,espe-cially in urban areas where people are jeopardized in health by theheavy noise and the toxic substances in the exhaust gas from them.Early in 1966,air pollution investigation made by USA pointed outthat 61% of total air pollution originated from automobiles.In 1981,West Germany studied and analysed the detrimental substancesexhausted from sedans,trucks and buses per kilometer travel dis-tance,as shown in the following table:展开更多
Ulcerative colitis(UC)is a chronic inflammatory bowel disease characterized by persistent inflammation of the colon and disrupted intestinal function.Ramulus mori(Sangzhi)alkaloids(SZ-A),derived from twigs of mulberry...Ulcerative colitis(UC)is a chronic inflammatory bowel disease characterized by persistent inflammation of the colon and disrupted intestinal function.Ramulus mori(Sangzhi)alkaloids(SZ-A),derived from twigs of mulberry,were approved by the National Medical Products Administration in 2020 for treating type 2 diabetes mellitus.Accumulated evidence has confirmed that SZ-A also alleviates non-alcoholic fatty liver disease and ameliorates inflammation,indicating its potential to address inflammation in UC.However,the treatment of UC faces challenges due to low drug delivery efficiency and short retention time.To overcome these challenges,an injectable and adherent in-situ thermo-sensitive hydrogel containing SZ-A was developed for rectal drug delivery,utilizing the thermo-sensitive polymers Poloxamer 407and 188.The thermo-sensitive hydrogel system was designed with a moderate gelation temperature of 32±0.5℃,a short gelation time of 64 s,a p H range of 7-10,high moisturizing capability exceeding 90%,and moderate mechanical strength of 4-5 s.In a rat model with UC,the in situ thermo-sensitive hydrogel significantly extended the retention time at the colonic site and enabled sustained release after rectal administration.Symptoms of UC were markedly reduced following rectal administration of SZ-A thermosensitive hydrogel.Furthermore,the release of inflammatory factors,such as interleukin-1β(IL-1β),IL-6,IL-18,tumor necrosis factor-α(TNF-α),and transforming growth factor-β1(TGF-β1),significantly decreased in the SZ-A thermo-sensitive hydrogel group.The integrity of the colonic mucosal barrier was significantly enhanced following the application of SZ-A thermo-sensitive hydrogel.In conclusion,rectal administration of SZ-A in situ thermo-sensitive hydrogel effectively alleviated UC symptoms,inhibited the secretion of inflammatory factors,and promoted the repair of the colonic mucosal barrier.This approach holds promise as a potential treatment for UC.展开更多
Objective: Fentanyl-induced cough (FIC) is a common complication with a reported incidence from 18.0% to 74.4% during general anesthesia induction. FIC increases the intrathoracic pressure and risks of postoper- at...Objective: Fentanyl-induced cough (FIC) is a common complication with a reported incidence from 18.0% to 74.4% during general anesthesia induction. FIC increases the intrathoracic pressure and risks of postoper- ative nausea and vomiting, yet available treatments are limited. This study was designed to investigate whether ad- ministering fentanyl via a slow intravenous fluid line can effectively alleviate FIC during induction of total intravenous general anesthesia. Methods: A total number of 1200 patients, aged 18-64 years, were enrolled, all of whom were American Society of Anesthesiologists (ASh,) grade I or II undergoing scheduled surgeries. All patients received total intravenous general anesthesia, which was induced sequentially by midazolam, fentanyl, propofol, and cisatracurium injection. Patients were randomly assigned to receive fentanyl 3.5 pg/kg via direct injection (control group) or via a slow intravenous fluid line. FIC incidence and the severity grades were analyzed with the Mann-Whitney test. Other adverse reactions, such as hypotension, hypertension, bradycardia, tachycardia, hypoxemia, vomiting, and aspiration, during induction were also observed. The online clinical registration number of this study was ChiCTR-IOR-16009025. Re- sults: Compared with the control group, the incidence of FIC was significantly lower in the slow intravenous fluid line group during induction (9.1%, 95% confidence interval (CI): 6.7%-11.4% vs. 55.9%, 95% CI: 51.8%-60.0%, P=0.000), as were the severity grades (P=0.000). There were no statistical differences between the two groups with regard to other adverse reactions (P〉0.05). Conclusions: The administration of fentanyl via a slow intravenous fluid line can alleviate FIC and its severity during induction for total intravenous general anesthesia. This method is simple, safe, and reliable, and deserves clinical expansion.展开更多
With the aim to determine whether coronatine (COR) alleviates drought stress on wheat, two winter wheat (Triticum aestivum L.) cultivars, ChangWu134 (drought-tolerant) and Shan253 (drought-sensitive) were stud...With the aim to determine whether coronatine (COR) alleviates drought stress on wheat, two winter wheat (Triticum aestivum L.) cultivars, ChangWu134 (drought-tolerant) and Shan253 (drought-sensitive) were studied under hydroponic conditions. Seedlings at the three-leaf stage were eultured in a Hoagland solution containing COR at 0.1 ~M for 24 h, and then exposed to 20% polyethylene glycol 6000 (PEG- 6000). Under simulated drought (SD), COR increased the dry weight of shoots and roots of the two cultivars significantly; the root/shoot ratio also increased by 30% for Shan253 and 40% for ChangWu134. Both cultivars treated with COR under SD (0.1COR-I-PEG) maintained significantly higher relative water content, photosynthesis, transpiration, intercellular concentration of CO2 and stomatal conductance in leaves than those not treated with PEG. Under drought, COR significantly decreased the relative conductivity and malondialdehyde production, and the loss of 1,1-diphenyl-2-picrylhydrazyl scavenging activity in leaves was significantly alleviated in COR-treated plants. The activity of peroxidase, catalase, glutathione reductase and ascorbate peroxidase were adversely affected by drought. Leaves of plants treated with COR under drought produced less abscisic acid (ABA) than those not treated. Thus, COR might alleviate drought effects on wheat by reducing active oxygen species production, activating antioxidant enzymes and changing the ABA level.展开更多
An optical burst switching (OBS) network platform is established with a ring topology of three nodes. A congestion Mleviated scheme using advanced token protocol and wavelength tunable receivers is demon- strated to...An optical burst switching (OBS) network platform is established with a ring topology of three nodes. A congestion Mleviated scheme using advanced token protocol and wavelength tunable receivers is demon- strated to optimize the network platform. Experimental results testify that this scheme can resist collision at the level of 0.1% congestion rate.展开更多
The county(city)located on the northern slope of the Kunlun Mountains is the primary area to solidify and extend the success of Xinjiang Uygur Autonomous Region,China in poverty alleviation.Its Sustainable Development...The county(city)located on the northern slope of the Kunlun Mountains is the primary area to solidify and extend the success of Xinjiang Uygur Autonomous Region,China in poverty alleviation.Its Sustainable Development Goals(SDGs)are intertwined with the concerted economic and social development of Xinjiang and the objective of achieving shared prosperity within the region.This study established a sustainable development evaluation framework by selecting 15 SDGs and 20 secondary indicators from the United Nations’SDGs.The aim of this study is to quantitatively assess the progress of SDGs at the county(city)level on the northern slope of the Kunlun Mountains.The results indicate that there are substantial variations in the scores of SDGs among the nine counties and one city located on the northern slope of the Kunlun Mountains.Notable high scores of SDGs are observed in the central and eastern regions,whereas lower scores are prevalent in the western areas.The scores of SDGs,in descending order,are as follows:62.22 for Minfeng County,54.22 for Hotan City,50.21 for Qiemo County,42.54 for Moyu County,41.56 for Ruoqiang County,41.39 for Qira County,39.86 for Lop County,38.25 for Yutian County,38.10 for Pishan County,and 36.87 for Hotan County.The performances of SDGs reveal that Hotan City,Lop County,Minfeng County,and Ruoqiang County have significant sustainable development capacity because they have three or more SDGs ranked as green color.However,Hotan County,Moyu County,Qira County,and Yutian County show the poorest performance,as they lack SDGs with green color.It is important to establish and enhance mechanisms that can ensure sustained income growth among poverty alleviation beneficiaries,sustained improvement in the capacity of rural governance,and the gradual improvement of social security system.These measures will facilitate the effective implementation of SDGs.Finally,this study offers a valuable support for governmental authorities and relevant departments in their decision-making processes.In addition,these results hold significant reference value for assessing SDGs at the county(city)level,particularly in areas characterized by low levels of economic development.展开更多
Since the 18 th National Congress of the Communist Party of China,General Secretary Xi Jinping delivered a series of speeches on ecological environment and poverty governance,forming the Xi Jinping's eco-poverty a...Since the 18 th National Congress of the Communist Party of China,General Secretary Xi Jinping delivered a series of speeches on ecological environment and poverty governance,forming the Xi Jinping's eco-poverty alleviation ideology.In this paper,the Xi Jinping's eco-poverty alleviation ideology is taken as the research object.Using the methods of literature analysis and comparative analysis,the origin of eco-poverty alleviation theory is explored from the common prosperity theory and the theory of ecological capital,and the practice foundation is found out from practical cases.The relationship between the ecological damage and poverty is systematically analyzed,and the mechanism of ecological poverty is explored in detail.The basic connotation of Xi Jinping's eco-poverty alleviation is expounded,and it consists of three parts:guiding ideology layer,implementation layer,and guarantee layer.By perfecting and innovating the market mechanism,social management mechanism,performance evaluation mechanism,integration mechanism with other poverty alleviation methods,and ecological immigration mechanism of ecological poverty,the realization of Xi Jinping's eco-poverty alleviation concept could be guaranteed.展开更多
Objective To investigate the role of vitamin D receptor(VDB)in the protection of bufalin on podocyte injury induced by adriamycin(ADR).Methods(1)In vitro:the toxic effect of different concentrations of bufalin(1...Objective To investigate the role of vitamin D receptor(VDB)in the protection of bufalin on podocyte injury induced by adriamycin(ADR).Methods(1)In vitro:the toxic effect of different concentrations of bufalin(10-9,10-8,10-7,10-6mol/L)on podocyte was evaluated by lactate dehydrogenase(LDH)test;Annexin V-FITC and RT-PCR were utilized for podocyte展开更多
Abstract Spinal cord injury (SCI) remains an unsolved human health challenge. To alleviate the impairments of SCI, we studied the therapeutic effect of nimodipine (an L-type Ca^2+ channel antagonist) on functiona...Abstract Spinal cord injury (SCI) remains an unsolved human health challenge. To alleviate the impairments of SCI, we studied the therapeutic effect of nimodipine (an L-type Ca^2+ channel antagonist) on functional recovery from SCI using Nystrom's method in a mouse model. Eighty-four mice were divided into three groups: control group in which only vertebral plates were cut off without causing any spinal injuries; SCI; and SCI with nimodipine treatment. We assessed the histopathology, apoptosis detection, cell cycle, mitochondrial transmembrane potential, bcl-2/bax and caspase-3 levels of tissue 8 h, 1 d, 3 d and 4 d after trauma to evaluate rehabilitation. Behavioral performances were also assessed before and after nimodipine treatment. Results from inclined plane tests, motor score assessment and histological observations indicated that mice in the nimodipine-treated group rehabilitated better than those in the SCI group. The ratio of apoptosis, caspase-3 and bax expression in the nimodip- ine-treated group were significantly lower than those in the SCI group. The mitochondrial membrane potential and bcl-2 expression were up-regulated in the nimodipine-treated group. Taken together, our results indicate that the inhibition of calcium flux by nimodipine could reduce apoptosis processes and tissue damage through a mitochondrial pathway after spinal cord trauma [Current Zoology 57 (3): 340-349, 2011].展开更多
Exploring the synergy types and optimization paths between Poverty Alleviation Effectiveness and Rural Revitalization is necessary for achieving the two centenary goals.Taking poverty alleviation counties in Hunan Pro...Exploring the synergy types and optimization paths between Poverty Alleviation Effectiveness and Rural Revitalization is necessary for achieving the two centenary goals.Taking poverty alleviation counties in Hunan Province,China as an example,our study proposed an indicator to measure the synergistic development between Poverty Alleviation Effectiveness and Rural Revitalization using the multi-index integrated evaluation method.Then,the coupling types were classified based on both the proposed indicator and regional characteristics.Besides,the corresponding optimization path for each coupling type was proposed to promote the synergistic development of Poverty Alleviation and Rural Revitalization.Results are as follows:1)Lower synergy focused on the southwestern Hunan,while low synergy is widely distributed(such as the west,southwest,northwest,and midland).Moderate synergy is in the midland,such as Huaihua and Chenzhou cities.High synergy is distributed in Yongzhou,Huaihua,Xiangxi cities,etc.Besides,only Hecheng City belongs to the higher synergy.2)This paper proposes corresponding development paths for different development characteristics and main problems from multiple perspectives of the protection system,industrial planning,and rural market.Continuously consolidate and enhance the effectiveness of Poverty Alleviation and Rural Revitalization to achieve coupled and synergistic development of the two systems.Our research results can provide theoretical support for implementing Poverty Alleviation and Rural Revitalization in Hunan Province,China.展开更多
Ni-rich layered oxides are one of the most promising cathode materials for Li-ion batteries due to their high energy density.However,the chemomechanical breakdown and capacity degradation associated with the anisotrop...Ni-rich layered oxides are one of the most promising cathode materials for Li-ion batteries due to their high energy density.However,the chemomechanical breakdown and capacity degradation associated with the anisotropic lattice evolution during lithiation/delithiation hinders its practical application.Herein,by utilizing the in situ environmental transmission electron microscopy(ETEM),we provide a real time nanoscale characterization of high temperature solid-state synthesis of LiNi_(0.8)CO_(0.1)Mn_(0.1)O_(2)(NCM811) cathode,and unprecedentedly reveal the strain/stress formation and morphological evolution mechanism of primary/second ary particles,as well as their influence on electrochemical performance.We show that stress inhomogeneity during solid-state synthesis will lead to both primary/secondary particle pulverization and new grain boundary initiation,which are detrimental to cathode cycling stability and rate performance.Aiming to alleviate this multiscale strain during solid-state synthesis,we introduced a calcination scheme that effectively relieves the stress during the synthesis,thus mitigating the primary/secondary particle crack and the detrimental grain boundaries formation,which in turn improves the cathode structural integrity and Li-ion transport kinetics for long-life and high-rate electrochemical performance.This work remarkably advances the fundamental understanding on mechanochemical properties of transition metal oxide cathode with solid-state synthesis and provides a unified guide for optimization the Ni-rich oxide cathode.展开更多
Poverty alleviation is a grand project involving the whole society,and is related to the development direction of socialism and the process of national modernization.It is the basic national policy and major strategic...Poverty alleviation is a grand project involving the whole society,and is related to the development direction of socialism and the process of national modernization.It is the basic national policy and major strategic deployment of China to eliminate poverty and improve people s livelihood under the new historical conditions.Therefore,in order to win the final victory of poverty alleviation and difficulties tackling,it is not enough to have only a policy system and an institutional system.It is also necessary to establish an effective legal system to regulate and restrain various poverty alleviation behaviors,which is the basic condition for ensuring the sustainable development of poverty alleviation.展开更多
基金supported by three programs from the National Natural Science Foundation of China (NSFC) (The experimental study on the effect of trace elements iodine and selenium on the autoimmune thyroid disease (No.30571564)The cross-sectional investigation on hypothyroidism induced by excess iodine intake and the experimental research on pathogenesy (No.30972465)The change of thyroid pathology and the levels of T3,T4 in SePP1,GPX3 knock out mice (No.30810103004)
文摘Selenium (Se) is an essential trace element. Autoimmune thyroid diseases (AITD) are destructive inflammatory or anti-receptor autoimmune diseases characterized by reactivity to self-thyroid antigens. However, the effects of Se on the cytokines in AITD are still unclear. So we researched the role of Selenium (Se) and Thl/Th2 cytokine productions in the pathogenesis of autoimmune thyroid diseases (AITD).
基金supported by National Natural Science Foundation of China(81402482,91313303)
文摘OBJECTIVE Leukotriene B4(LTB4)biosynthesis and subsequently neutrophilic inflammation may provide a potential strategy for the treatment of acute lung injury(ALI)or idiopathic pulmonary fibrosis(IPF).To provide a potential strategy for the treatment of ALI or IPF,we identified potent inhibitors of Leukotriene A4 hydrolase(LTA4H),a key enzyme in the biosynthesis of LTB4.METHODS In this study,we identified two known histone deacetylase(HDAC)inhibitors,suberanilohydroxamic acid(SAHA)and its analogue 4-(dimethylamino)-N-[7-(hydroxyamino)-7-oxoheptyl]benzamide(M344),as effective inhibitors of LTA4H using enzymatic assay,thermofluor assay,and X-ray crystallographic investigation.We next tested the effect of SAHA and M344 on endogenous LTB4 biosynthesis in neutrophils by ELISA and neutrophil migration by transwell migration assay.A murine experimental model of ALI was induced by lipopolysaccharide(LPS)inhalation.Histopathological analysis of lung tissue using H&E staining revealed the serious pulmonary damage caused by LPS treatment and the effect of the SAHA.We next examined m RNA and protein levels of pro-inflammatory cytokines in lung tissue and bronchoalveolar lavage fluid using q RT-PCR and ELISA to further investigate the underlying mechanisms of anti-inflammatory activities by SAHA.We also investigated the effects of SAHA and M344 on a murine experimental model of bleomycin(BLM)-induced IPF model.RESULTS The results of enzymatic assay and X-ray crystallography showed that both SAHA and M344 bind to LTA4H,significantly decrease LTB4 levels in neutrophil,and markedly diminish early neutrophilic inflammation in mouse models of ALI and IPF under a clinical safety dose.CONCLUSION Collectively,SAHA and M344 would provide promising agents with well-known clinical safety for potential treatment in patients with ALI and IPF via pharmacologically inhibiting LAT4H and blocking LTB4 biosynthesis.
基金supported by grants(No.81273060,81302423,81373007)from the National Natural Science Foundation of China
文摘Bovine aortic endothelial cells(BAECs)were cultured with high glucose(33 mmol/L),4 mg/L green tea polyphenols(GTPs)or 4 mg/L GTPs co-treatment with high glucose for 24 h in the presence or absence of Bafilomycin-A1(BAF).We observed that high glucose increased the accumulation of LC3-II.Treatment with BAF did not further increase the accumulation of LC3-II.
基金supported by the Natural Science Foundation of Hubei Province of China,No.2012FFC060the Natural Science Foundation of Hubei University of Medicine of China,No.2011QDZR-2+4 种基金a grant from the Scientific and Technological Project of Shiyan City of Hubei Province of China,No.14Y13a grant from the National College Student Innovation and Entrepreneurship Training Program of Education Ministry of China,No.201610929005 and No.201210929004the Educational Scientific Foundation of Hubei University of Medicine of China in 2016,No.2016027the Fund of Disciplines Construction of Hubei University of Medicine of China in 2015,No.2015the Scientific Foundation of Affiliated Taihe Hospital of Hubei University of Medicine of China in 2016,No.2016JJXM001
文摘Monosialoganglioside 1(GM1) is the main ganglioside subtype and has neuroprotective properties in the central nervous system. In this study, we aimed to determine whether GM1 alleviates neurotoxicity induced by moderate and high concentrations of propofol combined with remifentanil in the immature central nervous system. Hippocampal neural stem cells were isolated from newborn Sprague-Dawley rats and treated with remifentanil(5, 10, 20 ng/m L) and propofol(1.0, 2.5, 5.0 μg/m L), and/or GM1(12.5, 25, 50 μg/m L). GM1 reversed combined propofol and remifentanil-induced decreases in the percentage of 5-bromodeoxyuridine(+) cells and also reversed the increase in apoptotic cell percentage during neural stem cell proliferation and differentiation. However, GM1 with combined propofol and remifentanil did not affect β-tubulin(+) or glial fibrillary acidic protein(+) cell percentage during neural stem cell differentiation. In conclusion, we show that GM1 alleviates the damaging effects of propofol combined with remifentanil at moderate and high exposure concentrations in neural stem cells in vitro, and exerts protective effects on the immature central nervous system.
文摘To the Editor:I read with great interest the article by Cao et al[1] re- porting a potential therapeutic utility of p38 inhibitors for acute pancreatitis. Using a preclinical mouse model where acute pancreatitis was induced by administra- tion of cerulein (a cholecystokinin analog derived from the tree frog Litoria caerulea), the authors reported that the p38 MAPK inhibitor SB203580, administered intra- peritoneally before and after the first administration of cerulein, relieved signs associated with acute pancreatitis, including decreased HSP60 and HSP70 expression, and serum IL-6, amylase and lipase activities. Although the study remains descriptive and pharmacodynamic aspects were not examined in depth, it still has a merit as it undoubtedly provides a basis for further investigation into the potential utility of targeting p38 signaling for acute pancreatitis, a common serious condition that can be life-threatening.
文摘Cerebrovascular accident(CVA)or stroke is one of the world's leading causes of death and permanent disability.The high social and medical costs associated with this pathology mean there is an urgent need to find effective therapies.Occlusion of the middle cerebral artery(MCAO),mainly by clots,is the origin of most CVAs in humans.
文摘‘Tax reduction’must be one of the key words of the Chinese economy in 2018,during which various preferential tax policies were successively issued and tax-cut bonuses are continuously released.Since the beginning of the year,China has set a target of RMB 1.1 trillion in tax reductions throughout the year.In the second half of 2018,incremental policies were introduced.It is estimated that the annual economic burden will be reduced by more than RMB 1.3 trillion in 2018.
文摘The government has decided on a two-pronged drive to solve thecountry’s protracted energy shortage by bolstering investment projectswhile tightening control power consumption.Power generating projects costing some 20 billion yuan (4.26 billion)make up about one-third of the total 68 large and medium-sized capitalconstruction projects approved recently by the State Council despite theausterity policy.All the projects are expected to be completed within threeto eight years.With the completion of the 20 large and medium-sizedprojects,10,500 MW of generating capacity and 530 km of 500 kV trans-mission lines and corresponding substations will be added to the nation’scombined installed generating and transmitting capacity.Three of the projects,with a total installed capacity of 4140 MW。
文摘As main transportation and communication facilities,automo-biles contribute much convenience for people all over the world.However,they also bring about serious problem of pollution,espe-cially in urban areas where people are jeopardized in health by theheavy noise and the toxic substances in the exhaust gas from them.Early in 1966,air pollution investigation made by USA pointed outthat 61% of total air pollution originated from automobiles.In 1981,West Germany studied and analysed the detrimental substancesexhausted from sedans,trucks and buses per kilometer travel dis-tance,as shown in the following table:
基金financially supported by the National Natural Science Foundation(No.82304393,China)Beijing Nova Program(Nos.Z211100002121127 and 20220484219,China)+1 种基金Beijing Natural Science Foundation(No.L212059,China)CAMS Innovation Fund for Medical Sciences(No.2021-I2M-1-028,China)。
文摘Ulcerative colitis(UC)is a chronic inflammatory bowel disease characterized by persistent inflammation of the colon and disrupted intestinal function.Ramulus mori(Sangzhi)alkaloids(SZ-A),derived from twigs of mulberry,were approved by the National Medical Products Administration in 2020 for treating type 2 diabetes mellitus.Accumulated evidence has confirmed that SZ-A also alleviates non-alcoholic fatty liver disease and ameliorates inflammation,indicating its potential to address inflammation in UC.However,the treatment of UC faces challenges due to low drug delivery efficiency and short retention time.To overcome these challenges,an injectable and adherent in-situ thermo-sensitive hydrogel containing SZ-A was developed for rectal drug delivery,utilizing the thermo-sensitive polymers Poloxamer 407and 188.The thermo-sensitive hydrogel system was designed with a moderate gelation temperature of 32±0.5℃,a short gelation time of 64 s,a p H range of 7-10,high moisturizing capability exceeding 90%,and moderate mechanical strength of 4-5 s.In a rat model with UC,the in situ thermo-sensitive hydrogel significantly extended the retention time at the colonic site and enabled sustained release after rectal administration.Symptoms of UC were markedly reduced following rectal administration of SZ-A thermosensitive hydrogel.Furthermore,the release of inflammatory factors,such as interleukin-1β(IL-1β),IL-6,IL-18,tumor necrosis factor-α(TNF-α),and transforming growth factor-β1(TGF-β1),significantly decreased in the SZ-A thermo-sensitive hydrogel group.The integrity of the colonic mucosal barrier was significantly enhanced following the application of SZ-A thermo-sensitive hydrogel.In conclusion,rectal administration of SZ-A in situ thermo-sensitive hydrogel effectively alleviated UC symptoms,inhibited the secretion of inflammatory factors,and promoted the repair of the colonic mucosal barrier.This approach holds promise as a potential treatment for UC.
文摘Objective: Fentanyl-induced cough (FIC) is a common complication with a reported incidence from 18.0% to 74.4% during general anesthesia induction. FIC increases the intrathoracic pressure and risks of postoper- ative nausea and vomiting, yet available treatments are limited. This study was designed to investigate whether ad- ministering fentanyl via a slow intravenous fluid line can effectively alleviate FIC during induction of total intravenous general anesthesia. Methods: A total number of 1200 patients, aged 18-64 years, were enrolled, all of whom were American Society of Anesthesiologists (ASh,) grade I or II undergoing scheduled surgeries. All patients received total intravenous general anesthesia, which was induced sequentially by midazolam, fentanyl, propofol, and cisatracurium injection. Patients were randomly assigned to receive fentanyl 3.5 pg/kg via direct injection (control group) or via a slow intravenous fluid line. FIC incidence and the severity grades were analyzed with the Mann-Whitney test. Other adverse reactions, such as hypotension, hypertension, bradycardia, tachycardia, hypoxemia, vomiting, and aspiration, during induction were also observed. The online clinical registration number of this study was ChiCTR-IOR-16009025. Re- sults: Compared with the control group, the incidence of FIC was significantly lower in the slow intravenous fluid line group during induction (9.1%, 95% confidence interval (CI): 6.7%-11.4% vs. 55.9%, 95% CI: 51.8%-60.0%, P=0.000), as were the severity grades (P=0.000). There were no statistical differences between the two groups with regard to other adverse reactions (P〉0.05). Conclusions: The administration of fentanyl via a slow intravenous fluid line can alleviate FIC and its severity during induction for total intravenous general anesthesia. This method is simple, safe, and reliable, and deserves clinical expansion.
基金supported by grants from the National High Technology Research and Development Program of China(2006AA10A213)the Teaching and Research Award Program for Outstanding Young Teachers in Higher Educational Institutions of the Ministry of Education,China
文摘With the aim to determine whether coronatine (COR) alleviates drought stress on wheat, two winter wheat (Triticum aestivum L.) cultivars, ChangWu134 (drought-tolerant) and Shan253 (drought-sensitive) were studied under hydroponic conditions. Seedlings at the three-leaf stage were eultured in a Hoagland solution containing COR at 0.1 ~M for 24 h, and then exposed to 20% polyethylene glycol 6000 (PEG- 6000). Under simulated drought (SD), COR increased the dry weight of shoots and roots of the two cultivars significantly; the root/shoot ratio also increased by 30% for Shan253 and 40% for ChangWu134. Both cultivars treated with COR under SD (0.1COR-I-PEG) maintained significantly higher relative water content, photosynthesis, transpiration, intercellular concentration of CO2 and stomatal conductance in leaves than those not treated with PEG. Under drought, COR significantly decreased the relative conductivity and malondialdehyde production, and the loss of 1,1-diphenyl-2-picrylhydrazyl scavenging activity in leaves was significantly alleviated in COR-treated plants. The activity of peroxidase, catalase, glutathione reductase and ascorbate peroxidase were adversely affected by drought. Leaves of plants treated with COR under drought produced less abscisic acid (ABA) than those not treated. Thus, COR might alleviate drought effects on wheat by reducing active oxygen species production, activating antioxidant enzymes and changing the ABA level.
基金National Natural Science Foundation of China(No.90704006,60572021,and 60711140087)National"973"Program of China(No.2007CB310705)+3 种基金National"863"Project of China(No.2006AA01Z238)PCSIRT(No.IRT0609)ISTCP(No.2006DFAl1040)111 Project(No.B07005).
文摘An optical burst switching (OBS) network platform is established with a ring topology of three nodes. A congestion Mleviated scheme using advanced token protocol and wavelength tunable receivers is demon- strated to optimize the network platform. Experimental results testify that this scheme can resist collision at the level of 0.1% congestion rate.
基金financially supported by the Natural Science Foundation of Xinjiang Uygur Autonomous Region,China(2022D01B234).
文摘The county(city)located on the northern slope of the Kunlun Mountains is the primary area to solidify and extend the success of Xinjiang Uygur Autonomous Region,China in poverty alleviation.Its Sustainable Development Goals(SDGs)are intertwined with the concerted economic and social development of Xinjiang and the objective of achieving shared prosperity within the region.This study established a sustainable development evaluation framework by selecting 15 SDGs and 20 secondary indicators from the United Nations’SDGs.The aim of this study is to quantitatively assess the progress of SDGs at the county(city)level on the northern slope of the Kunlun Mountains.The results indicate that there are substantial variations in the scores of SDGs among the nine counties and one city located on the northern slope of the Kunlun Mountains.Notable high scores of SDGs are observed in the central and eastern regions,whereas lower scores are prevalent in the western areas.The scores of SDGs,in descending order,are as follows:62.22 for Minfeng County,54.22 for Hotan City,50.21 for Qiemo County,42.54 for Moyu County,41.56 for Ruoqiang County,41.39 for Qira County,39.86 for Lop County,38.25 for Yutian County,38.10 for Pishan County,and 36.87 for Hotan County.The performances of SDGs reveal that Hotan City,Lop County,Minfeng County,and Ruoqiang County have significant sustainable development capacity because they have three or more SDGs ranked as green color.However,Hotan County,Moyu County,Qira County,and Yutian County show the poorest performance,as they lack SDGs with green color.It is important to establish and enhance mechanisms that can ensure sustained income growth among poverty alleviation beneficiaries,sustained improvement in the capacity of rural governance,and the gradual improvement of social security system.These measures will facilitate the effective implementation of SDGs.Finally,this study offers a valuable support for governmental authorities and relevant departments in their decision-making processes.In addition,these results hold significant reference value for assessing SDGs at the county(city)level,particularly in areas characterized by low levels of economic development.
基金Supported by Hunan Provincial Social Science Fund Project(21YBX021)Hunan Provincial Natural Science Foundation Project(2024JJ7234).
文摘Since the 18 th National Congress of the Communist Party of China,General Secretary Xi Jinping delivered a series of speeches on ecological environment and poverty governance,forming the Xi Jinping's eco-poverty alleviation ideology.In this paper,the Xi Jinping's eco-poverty alleviation ideology is taken as the research object.Using the methods of literature analysis and comparative analysis,the origin of eco-poverty alleviation theory is explored from the common prosperity theory and the theory of ecological capital,and the practice foundation is found out from practical cases.The relationship between the ecological damage and poverty is systematically analyzed,and the mechanism of ecological poverty is explored in detail.The basic connotation of Xi Jinping's eco-poverty alleviation is expounded,and it consists of three parts:guiding ideology layer,implementation layer,and guarantee layer.By perfecting and innovating the market mechanism,social management mechanism,performance evaluation mechanism,integration mechanism with other poverty alleviation methods,and ecological immigration mechanism of ecological poverty,the realization of Xi Jinping's eco-poverty alleviation concept could be guaranteed.
文摘Objective To investigate the role of vitamin D receptor(VDB)in the protection of bufalin on podocyte injury induced by adriamycin(ADR).Methods(1)In vitro:the toxic effect of different concentrations of bufalin(10-9,10-8,10-7,10-6mol/L)on podocyte was evaluated by lactate dehydrogenase(LDH)test;Annexin V-FITC and RT-PCR were utilized for podocyte
文摘Abstract Spinal cord injury (SCI) remains an unsolved human health challenge. To alleviate the impairments of SCI, we studied the therapeutic effect of nimodipine (an L-type Ca^2+ channel antagonist) on functional recovery from SCI using Nystrom's method in a mouse model. Eighty-four mice were divided into three groups: control group in which only vertebral plates were cut off without causing any spinal injuries; SCI; and SCI with nimodipine treatment. We assessed the histopathology, apoptosis detection, cell cycle, mitochondrial transmembrane potential, bcl-2/bax and caspase-3 levels of tissue 8 h, 1 d, 3 d and 4 d after trauma to evaluate rehabilitation. Behavioral performances were also assessed before and after nimodipine treatment. Results from inclined plane tests, motor score assessment and histological observations indicated that mice in the nimodipine-treated group rehabilitated better than those in the SCI group. The ratio of apoptosis, caspase-3 and bax expression in the nimodip- ine-treated group were significantly lower than those in the SCI group. The mitochondrial membrane potential and bcl-2 expression were up-regulated in the nimodipine-treated group. Taken together, our results indicate that the inhibition of calcium flux by nimodipine could reduce apoptosis processes and tissue damage through a mitochondrial pathway after spinal cord trauma [Current Zoology 57 (3): 340-349, 2011].
基金Under the auspices of the National Natural Science Foundation of China(No.41971219,41571168)Natural Science Foundation of Hunan Province(No.2020JJ4372)Philosophy and Social Science Fund Project of Hunan Province(No.18ZDB015)。
文摘Exploring the synergy types and optimization paths between Poverty Alleviation Effectiveness and Rural Revitalization is necessary for achieving the two centenary goals.Taking poverty alleviation counties in Hunan Province,China as an example,our study proposed an indicator to measure the synergistic development between Poverty Alleviation Effectiveness and Rural Revitalization using the multi-index integrated evaluation method.Then,the coupling types were classified based on both the proposed indicator and regional characteristics.Besides,the corresponding optimization path for each coupling type was proposed to promote the synergistic development of Poverty Alleviation and Rural Revitalization.Results are as follows:1)Lower synergy focused on the southwestern Hunan,while low synergy is widely distributed(such as the west,southwest,northwest,and midland).Moderate synergy is in the midland,such as Huaihua and Chenzhou cities.High synergy is distributed in Yongzhou,Huaihua,Xiangxi cities,etc.Besides,only Hecheng City belongs to the higher synergy.2)This paper proposes corresponding development paths for different development characteristics and main problems from multiple perspectives of the protection system,industrial planning,and rural market.Continuously consolidate and enhance the effectiveness of Poverty Alleviation and Rural Revitalization to achieve coupled and synergistic development of the two systems.Our research results can provide theoretical support for implementing Poverty Alleviation and Rural Revitalization in Hunan Province,China.
基金the funding support from the National Natural Science Foundation of China (Nos. 52022088, 51971245, 51772262, U20A20336, 21935009)the National Key R&D Program of China (No. 2022YFB2404300, 2022YFE0207900)+2 种基金the Natural Science Foundation of Hebei Province (No. F2021203097, B2020203037)the China Postdoctoral Science Foundation (Grant number 2021M702756)the Sichuan Science and Technology Program and Science and Technology Planning Project of Yibin Sanjiang New Area (2022JBGS002, 2022ZYD0125, 23QYCX0034, 2021ZYGY022)。
文摘Ni-rich layered oxides are one of the most promising cathode materials for Li-ion batteries due to their high energy density.However,the chemomechanical breakdown and capacity degradation associated with the anisotropic lattice evolution during lithiation/delithiation hinders its practical application.Herein,by utilizing the in situ environmental transmission electron microscopy(ETEM),we provide a real time nanoscale characterization of high temperature solid-state synthesis of LiNi_(0.8)CO_(0.1)Mn_(0.1)O_(2)(NCM811) cathode,and unprecedentedly reveal the strain/stress formation and morphological evolution mechanism of primary/second ary particles,as well as their influence on electrochemical performance.We show that stress inhomogeneity during solid-state synthesis will lead to both primary/secondary particle pulverization and new grain boundary initiation,which are detrimental to cathode cycling stability and rate performance.Aiming to alleviate this multiscale strain during solid-state synthesis,we introduced a calcination scheme that effectively relieves the stress during the synthesis,thus mitigating the primary/secondary particle crack and the detrimental grain boundaries formation,which in turn improves the cathode structural integrity and Li-ion transport kinetics for long-life and high-rate electrochemical performance.This work remarkably advances the fundamental understanding on mechanochemical properties of transition metal oxide cathode with solid-state synthesis and provides a unified guide for optimization the Ni-rich oxide cathode.
文摘Poverty alleviation is a grand project involving the whole society,and is related to the development direction of socialism and the process of national modernization.It is the basic national policy and major strategic deployment of China to eliminate poverty and improve people s livelihood under the new historical conditions.Therefore,in order to win the final victory of poverty alleviation and difficulties tackling,it is not enough to have only a policy system and an institutional system.It is also necessary to establish an effective legal system to regulate and restrain various poverty alleviation behaviors,which is the basic condition for ensuring the sustainable development of poverty alleviation.