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Lightweight Dual‑Functional Segregated Nanocomposite Foams for Integrated Infrared Stealth and Absorption‑Dominant Electromagnetic Interference Shielding 被引量:2
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作者 Zhonglei ma Ruochu Jiang +8 位作者 Jiayao Jing Songlei Kang li ma Kefan Zhang Junxian li Yu Zhang Jianbin Qin Shuhuan Yun Guangcheng Zhang 《Nano-Micro Letters》 SCIE EI CAS CSCD 2024年第11期38-55,共18页
Lightweight infrared stealth and absorption-dominant electromagnetic interference(EMI)shielding materials are highly desirable in areas of aerospace,weapons,military and wearable electronics.Herein,lightweight and hig... Lightweight infrared stealth and absorption-dominant electromagnetic interference(EMI)shielding materials are highly desirable in areas of aerospace,weapons,military and wearable electronics.Herein,lightweight and high-efficiency dual-functional segregated nanocomposite foams with microcellular structures are developed for integrated infrared stealth and absorption-dominant EMI shielding via the efficient and scalable supercritical CO_(2)(SC-CO_(2))foaming combined with hydrogen bonding assembly and compression molding strategy.The obtained lightweight segregated nanocomposite foams exhibit superior infrared stealth performances benefitting from the synergistic effect of highly effective thermal insulation and low infrared emissivity,and outstanding absorption-dominant EMI shielding performances attributed to the synchronous construction of microcellular structures and segregated structures.Particularly,the segregated nanocomposite foams present a large radiation temperature reduction of 70.2℃ at the object temperature of 100℃,and a significantly improved EM wave absorptivity/reflectivity(A/R)ratio of 2.15 at an ultralow Ti_(3)C_(2)T_(x) content of 1.7 vol%.Moreover,the segregated nanocomposite foams exhibit outstanding working reliability and stability upon dynamic compression cycles.The results demonstrate that the lightweight and high-efficiency dual-functional segregated nanocomposite foams have excellent potentials for infrared stealth and absorption-dominant EMI shielding applications in aerospace,weapons,military and wearable electronics. 展开更多
关键词 Segregated nanocomposite foams Microcellular structures Infrared stealth EMI shielding Low infrared emissivity
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Inetetamab combined with S-1 and oxaliplatin as first-line treatment for human epidermal growth factor receptor 2-positive gastric cancer
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作者 Ying Kong Qi Dong +6 位作者 Peng Jin Ming-Yan li li ma Qi-Jun Yi Yu-E Miao Hai-Yan liu Jian-Gang liu 《World Journal of Gastroenterology》 SCIE CAS 2024年第40期4367-4375,共9页
BACKGROUND Patients with human epidermal growth factor receptor 2(HER2)-positive advanced gastric cancer have poor outcomes.Trastuzumab combined with chemotherapy is the first-line standard treatment for HER2-positive... BACKGROUND Patients with human epidermal growth factor receptor 2(HER2)-positive advanced gastric cancer have poor outcomes.Trastuzumab combined with chemotherapy is the first-line standard treatment for HER2-positive advanced gastric cancer.Inetetamab is a novel anti-HER2 drug,and its efficacy and safety in gastric cancer have not yet been reported.AIM To evaluate the efficacy and safety of the S-1 plus oxaliplatin(SOX)regimen combined with inetetamab as a first-line treatment for HER2-positive advanced gastric cancer.METHODS Thirty-eight patients with HER2-positive advanced gastric cancer or gastroeso-phageal junction adenocarcinoma were randomly divided into two groups:One group received inetetamab combined with the SOX regimen,and the other group received trastuzumab combined with the SOX regimen.After 4-6 cycles,patients with stable disease received maintenance therapy.The primary endpoints were progression-free survival(PFS)and overall survival(OS),and the secondary endpoints were the objective response rate,disease control rate,and adverse events(AEs).RESULTS Thirty-seven patients completed the trial,with 18 patients in the inetetamab group and 19 patients in the trastuzumab group.In the inetetamab group,the median PFS was 8.5 months,whereas it was 7.3 months in the trastuzumab group(P=0.046);this difference was significant.The median OS in the inetetamab group vs the trastuzumab group was 15.4 months vs 14.3 months(P=0.33),and the objective response rate was 50%vs 42%(P=0.63),respectively;these differences were not significant.Common AEs included leukopenia,thrombocytopenia,nausea,and vomiting.The incidence rates of grade≥3 AEs were 56%in the inetetamab group and 47%in the trastuzumab group(P=0.63),with no significant difference.CONCLUSION In the first-line treatment of HER2-positive advanced gastric cancer,inetetamab and trastuzumab showed comparable efficacy.The inetetamab group showed superior PFS,and both groups had good safety. 展开更多
关键词 Human epidermal growth factor receptor 2-positive Advanced gastric cancer Inetetamab TRASTUZUMAB EFFICACY Safety
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Silencing of Jumonji domain-containing 1C inhibits the osteogenic differentiation of bone marrow mesenchymal stem cells via nuclear factor-κB signaling
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作者 Jing-Yi li Ting-Ting Wang +2 位作者 li ma Yu Zhang Di Zhu 《World Journal of Stem Cells》 SCIE 2024年第2期151-162,共12页
BACKGROUND Osteoporosis is a common metabolic bone disorder induced by an imbalance between osteoclastic activity and osteogenic activity.During osteoporosis,bone mesenchymal stem cells(BMSCs)exhibit an increased abil... BACKGROUND Osteoporosis is a common metabolic bone disorder induced by an imbalance between osteoclastic activity and osteogenic activity.During osteoporosis,bone mesenchymal stem cells(BMSCs)exhibit an increased ability to differentiate into adipocytes and a decreased ability to differentiate into osteoblasts,resulting in bone loss.Jumonji domain-containing 1C(JMJD1C)has been demonstrated to suppress osteoclastogenesis.AIM To examine the effect of JMJD1C on the osteogenesis of BMSCs and the potential underlying mechanism.METHODS BMSCs were isolated from mouse bone marrow tissues.Oil Red O staining,Alizarin red staining,alkaline phosphatase staining and the expression of adipo-genic and osteogenic-associated genes were assessed to determine the differen-tiation of BMSCs.Bone marrow-derived macrophages(BMMs)were incubated with receptor activator of nuclear factor-kappaΒligand to induce osteoclast differentiation,and osteoclast differen-tiation was confirmed by tartrate-resistant acid phosphatase staining.Other related genes were measured via reverse transcription coupled to the quantitative polymerase chain reaction and western blotting.Enzyme-linked immunosorbent assays were used to measure the levels of inflammatory cytokines,including tumor necrosis factor alpha,interleukin-6 and interleukin-1 beta.RESULTS The osteogenic and adipogenic differentiation potential of BMSCs isolated from mouse bone marrow samples was evaluated.JMJD1C mRNA and protein expression was upregulated in BMSCs after osteoblast induction,while p-nuclear factor-κB(NF-κB)and inflammatory cytokines were not significantly altered.Knockdown of JMJD1C repressed osteogenic differentiation and enhanced NF-κB activation and inflammatory cytokine release in BMSCs.Moreover,JMJD1C expression decreased during BMM osteoclast differentiation.CONCLUSION The JMJD1C/NF-κB signaling pathway is potentially involved in BMSC osteogenic differentiation and may play vital roles in the pathogenesis of osteoporosis. 展开更多
关键词 OSTEOPOROSIS Mesenchymal stem cells OSTEOGENESIS Jumonji domain-containing 1C Nuclear factor-κB
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Toripalimab in combination with chemotherapy effectively suppresses local recurrence and metastatic sarcomatoid renal cell carcinoma:A case report
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作者 Ming-Zhu Gao Nian-Fei Wang +2 位作者 Jin-You Wang li ma Yu-Cai Yang 《World Journal of Clinical Cases》 SCIE 2024年第28期6230-6236,共7页
BACKGROUND Sarcomatoid renal cell carcinoma(SRCC)is a rare variant of renal cell carcinoma associated with an unfavorable prognosis.The efficacy of conventional chemo-therapy and targeted therapies are limited,whereas... BACKGROUND Sarcomatoid renal cell carcinoma(SRCC)is a rare variant of renal cell carcinoma associated with an unfavorable prognosis.The efficacy of conventional chemo-therapy and targeted therapies are limited,whereas the emergence of immune checkpoint inhibitor has introduced new avenues for managing advanced SRCC.CASE SUMMARY A 77-year-old female patient was referred to our hospital following the incidental detection of a right kidney tumor without specific symptoms.The tumor was successfully resected,and subsequent pathological examination confirmed SRCC.She experienced both local recurrence and distant metastasis eight months after the initial laparoscopic resection.Following six cycles of toripalimab combined with pirarubicin chemotherapy,the patient achieved a partial response.Subse-quently,the patient attained an almost-complete continuous response to toripa-limab monotherapy maintenance for an additional six cycles.She has not experienced disease progression for 15 months,and her overall survival has reached 24 months thus far.CONCLUSION Combination therapy with programmed death 1 antibodies and cytotoxic agents may be a recommended first-line treatment approach for SRCC. 展开更多
关键词 Renal cell carcinoma Sarcomatoid dedifferentiation Immune checkpoint inhibitor CHEMOTHERAPY Case report
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Left inferior phrenic arterial malformation mimicking gastric varices: A case report and review of literature
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作者 Han Wang Yi-Qing Tan +6 位作者 Ping Han An-Hui Xu Han-lin Mu Zhe Zhu li ma Mei liu Hua-Ping Xie 《World Journal of Gastrointestinal Surgery》 SCIE 2024年第9期3057-3064,共8页
BACKGROUND Gastric submucosal arterial dilation resulting from splenic artery occlusion represents an exceedingly rare etiology of acute upper gastrointestinal bleeding(UGIB).Although endoscopy is a widely utilized di... BACKGROUND Gastric submucosal arterial dilation resulting from splenic artery occlusion represents an exceedingly rare etiology of acute upper gastrointestinal bleeding(UGIB).Although endoscopy is a widely utilized diagnostic and therapeutic modality for gastrointestinal bleeding,it has limitations in detecting arterial abnormalities.CASE SUMMARY This report presents a rare case of massive UGIB in a 57-year-old male with a tortuous left inferior phrenic artery accompanied by splenic artery occlusion.“Gastric varices”was identified during the patient's endoscopy one year before hemorrhage.Despite initial hemostasis by endoscopic clipping,the patient experienced massive rebleeding after one month,requiring intervention with transcatheter arterial embolization(TAE)to achieve hemostasis.CONCLUSION This is the first case to report UGIB due to a tortuous left inferior phrenic artery.This case highlights the limitations of endoscopy in identifying arterial abnormalities and emphasizes the potential of TAE as a viable alternative for the management of arterial bleeding in the gastrointestinal tract. 展开更多
关键词 Upper gastrointestinal bleeding Left inferior phrenic artery Splenic artery occlusion Gastrointestinal endoscopy Digital subtraction angiography Case report
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Concurrent chemoradiotherapy combined with enteral nutrition support:a radical treatment strategy for esophageal squamous cell carcinoma patients with malignant istulae 被引量:20
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作者 li ma Guang-Yu Luo +12 位作者 Yu-Feng Ren Bo Qiu Hong Yang Chun-Xia Xie Song-Ran liu Shi-liang liu Zhao-lin Chen Qun li Jian-Hua Fu Meng-Zhong liu Yong-Hong Hu Wen-Feng Ye Hui liu 《Chinese Journal of Cancer》 SCIE CAS CSCD 2017年第1期26-33,共8页
Background: Concurrent chemoradiotherapy(CCRT) significantly increases the survival rate of esophageal squa?mous cell carcinoma(ESCC) patients with malignant fistulae. Recent clinical evidence has shown the benefits o... Background: Concurrent chemoradiotherapy(CCRT) significantly increases the survival rate of esophageal squa?mous cell carcinoma(ESCC) patients with malignant fistulae. Recent clinical evidence has shown the benefits of enteral nutrition for malnourished cancer patients. In this study, we aimed to validate that, with the support of enteral nutrition, ESCC patients who develop malignant fistulae might be able to complete CCRT and achieve long?term survival.Methods: We reviewed the medical records of 652 patients with ESCC who received definitive CCRT at Sun Yat?sen University Cancer Center between January 2010 and December 2012. Treatment outcome and toxicity were ret?rospectively evaluated in 40 ESCC patients with malignant fistulae. All the 40 patients were treated with CCRT and evaluated by clinical nutritionists using nutrition risk screening(NRS) before, during, and after treatment. Twenty?two patients received a nasogastric tube, and 18 underwent percutaneous endoscopic gastrostomy feeding. The median energy intake was 2166 kcal/day. Treatment response was evaluated at 3 months after the completion of CCRT.Results: With a median follow?up of 18 months(range, 3–39 months), patients' 1?year overall survival(OS) rate was 62.5%, and the estimated OS time was 25.5 months. Univariate analysis showed that the NRS score(P n NRS score(P se to treatment(P < 0.001) were sig= 0.003), increase i= 0.024), fistula closure(P = 0.011), and responnifi?cantly associated with OS. Multivariate analysis showed that tumor response(P = 0.044) and increase in NRS score(P = 0.044) were independent predictors of OS. Grade 3 vomiting was observed in 8 patients(20.0%), grade 3 neutro?penia was observed in 11 patients(27.5%), and grade 3 cough was observed in 13 patients(32.5%); 2 patients(5.0%) died of massive bleeding during treatment.Conclusions: CCRT combined with enteral nutrition support is effective for ESCC patients with malignant fistulae. Patients have an increased potential to be cured, especially those who experience complete response and have an increase in NRS score. Careful observation and nutrition support are required for patients with advanced T?category ESCC who undergo CCRT. 展开更多
关键词 Esophageal squamous cell carcinoma Malignant istula RADIOTHERAPY Concurrent chemotherapy Enteral nutrition support
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COMBINATION OF γ-INTERFERON WITH TRAIL AND CISPLATIN OR ETOPOSIDE INDUCES APOPTOSIS IN HUMAN NEUROBLASTOMA CELL LINE SH-SY5Y 被引量:9
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作者 Hai-xia Tong Chun-wei Lu +2 位作者 Ji-hong Zhang li ma Jin-hua Zhang 《Chinese Medical Sciences Journal》 CAS CSCD 2007年第1期38-43,共6页
Objective To study the effect of γ-interferon (IFNγ), tumor necrosis factor related apoptosis inducing ligand (TRAIL), and cisplatin or etoposide induced apoptosis in human neuroblastoma cell line SH-SY5Y and it... Objective To study the effect of γ-interferon (IFNγ), tumor necrosis factor related apoptosis inducing ligand (TRAIL), and cisplatin or etoposide induced apoptosis in human neuroblastoma cell line SH-SY5Y and its possible molecular mechanisms. Methods The expressions of Caspase 8 mRNA and protein were detected with RT-PCR and Western blot analysis. The effects of IFNγ, TRAIL, IFNγ + TRAIL, IFNγ + Caspase 8 inhibitor + TRAIL, IFNγ + cisplatin + TRAIL, and IFNγ + etoposide + TRAIL on the growth and apoptosis of SH-SY5Y cells were detected with the methods of MTT and flow cytometry. The relative Caspase 8 activity was measured with colorimetric assay. Results Caspase 8 was undetectable in SH-SY5Y cells but an increased expression of Caspase 8 mRNA and protein was found after treatment with IFNγ. SH-SY5Y ceils themselves were not sensitive to TRAIL, but those expressing Caspase 8 after treatment with IFNγ were. The killing effect of TRAIL on SH-SY5Y cells expressing Caspase 8 was depressed by Caspase 8 inhibitor. Cisplatin and etoposide could enhance the sensitivity of TRAIL on SH-SY5Y cells. The relative Caspase 8 activity of SH-SY5Y cells in IFNγ + TRAIL group was significantly higher than those of control group, IFNγ group, TRAIL group, and inhibitor group ( P 〈 0. 01 ). There was no significant difference among IFNγ + TRAIL group, IFNγ + cisplatin + TRAIL group, and IFNγ + etoposide + TRAIL group. Conclusions IFNγ could sensitize SH-SY5Y cells to TRAIL-induced apoptosis and this may be realized by the up-regulation of Caspase 8. Cisplatin and etoposide could enhance the killing effect of TRAIL on SH-SY5Y cells. 展开更多
关键词 NEUROBLASTOMA APOPTOSIS tumor necrosis factor related apoptosis inducing ligand γ-interferon
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Undifferentiated embryonal sarcoma of liver in an old female:Case report and review of the literature 被引量:8
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作者 li ma Yue-Ping liu +3 位作者 Cui-Zhi Geng Zhi-Hui Tian Guo-Xiang Wu Xiao-ling Wang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2008年第47期7267-7270,共4页
The clinical characteristics of undifferentiated(embryonal) sarcoma of the liver(UESL) were investigated and the best treatment modalities were recommended.Both histology and immuno-histochemistry demonstrated the cel... The clinical characteristics of undifferentiated(embryonal) sarcoma of the liver(UESL) were investigated and the best treatment modalities were recommended.Both histology and immuno-histochemistry demonstrated the cellular features of this peculiar tumor.The tumor size was 12 cm × 9 cm × 8 cm in the right liver lobe.The patient underwent surgical resection of the tumor.The postoperative recovery was uneventful and she died eight months after diagnosis.The tumor showed mixed spindle and polygonal cells within the myxoid matrix.Some tumor cells contained eosinophilic hyaline globules that were positive for resistant diastase.Immunohistochemistry showed positive vimentin.Stellate and spindle cells were positively stained with alpha-1-antichymotrypsin(AACT) and CD68.This case indicates that UESL is not obviously differentiated in old-aged adults. 展开更多
关键词 Undifferentiated (embryonal) sarcoma Old-aged adult IMMUNOHISTOCHEMISTRY Liver tumor
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Current status of clinical nursing specialists and the demands of osteoporosis specialized nurses in China's Mainland 被引量:10
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作者 Xu Tian Jun-xiao lian +4 位作者 li-juan Yi li ma Yan Wang Hong Caoc Guo-min Song 《International Journal of Nursing Sciences》 2014年第3期306-313,共8页
The clinical nursing specialist(CNS)is an expert who applies an expanded range of practical,theoretical,and research-based competencies to the care of patients within in a specialty clinical area within the larger dis... The clinical nursing specialist(CNS)is an expert who applies an expanded range of practical,theoretical,and research-based competencies to the care of patients within in a specialty clinical area within the larger discipline of nursing.A large number of studies consistently conclude that the CNS is a valuable healthcare resource that provides highquality clinical and evidence-based nursing practice and improves patient outcome.The CNS has been involved in healthcare practices for many years,with an increasingly diverse role.However,the training for the CNS in China is only in a preliminary developmental stage.The aim of this article is to review the history and development of the CNS role.Furthermore,the epidemiologic status of osteoporosis,as well as the feasibility and necessity of developing training programs in China for the osteoporosis CNS,will be discussed. 展开更多
关键词 Advanced practice nurse Clinical nursing specialist Specialized nurse OSTEOPOROSIS
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Differences in Thermal Preference and Tolerance among Three Phrynocephalus Lizards (Agamidae) with Different Body Sizes and Habitat Use 被引量:5
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作者 Zheng WANG Hongliang LU +1 位作者 li ma Xiang JI 《Asian Herpetological Research》 SCIE 2013年第3期214-220,共7页
We acclimated adults of two viviparous (Phrynocephalus guinanens& and P. vlangalii) and one oviparous (P. versicolor) species of toad-headed lizards (Agamidae) to 28 ℃, 33 ℃ and 38 ℃ to examine whether therm... We acclimated adults of two viviparous (Phrynocephalus guinanens& and P. vlangalii) and one oviparous (P. versicolor) species of toad-headed lizards (Agamidae) to 28 ℃, 33 ℃ and 38 ℃ to examine whether thermal preference (preferred body temperature, Tp) and thermal tolerance (critical thermal minimum, CTMin; critical thermal maximum, CTMax) were affected by acclimation temperature, and correlate with body size and habitat use. Both Tp and CTMax were highest in P. versicolor and lowest in P. vlangalii, with P. guinanensis in between. The two viviparous species did not differ in CTMin and thermal tolerance range, and they both were more resistant to low temperatures and had a wider range of thermal tolerance than the oviparous species. Both CTMin and CTMax shifted upward as acclimation temperature increased in all the three species. Tp was higher in the lizards acclimated to 33 ℃ than in those to 28 ℃ or 38 ℃. The range of thermal tolerance was wider in the lizards acclimated to 28 ℃ than in those to 33 ℃ or 38 ℃. The data showed that: 1) thermal preference and tolerance were affected by acclimation temperature, and differed among the three species of Phrynocephalus lizards with different body sizes and habitat uses; 2) both Tp and CTMax were higher in the species exchanging heat more rapidly with the environment, and CTMin was higher in the species using warmer habitats during the active season; and 3) thermal preference and tolerance might correlat with body size and habitat use in Phrynocephalus lizards. 展开更多
关键词 AGAMIDAE Phrynocephalus lizards thermal preference thermal tolerance body size habitat use
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Optimal flexibility dispatch of demand side resources with high penetration of renewables:a Stackelberg game method 被引量:6
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作者 Peng Lu Hao Lv +4 位作者 Nian liu Tieqiang Wang Jianpei Han Wenwu Zhang li ma 《Global Energy Interconnection》 CAS CSCD 2021年第1期28-38,共11页
To promote the utilization of renewable energy,such as photovoltaics,this paper proposes an optimal flexibility dispatch method for demand-side resources(DSR)based on the Stackelberg game theory.First,the concept of t... To promote the utilization of renewable energy,such as photovoltaics,this paper proposes an optimal flexibility dispatch method for demand-side resources(DSR)based on the Stackelberg game theory.First,the concept of the generalized DSR is analyzed and flexibility models for various DSR are constructed.Second,owing to the characteristics of small capacity but large-scale,an outer approximation is proposed to describe the aggregate flexibility of DSR.Then,the optimal flexibility dispatch model of DSR based on the Stackelberg game is established and a decentralized solution algorithm is designed to obtain the Stackelberg equilibrium.Finally,the actual data are utilized for the case study and the results show that,compared to the traditional centralized optimization method,the proposed optimal flexibility dispatch method can not only reduce the net load variability of the DSR aggregator but is beneficial for all DSR owners,which is more suitable for practical applications. 展开更多
关键词 Demand side resource Optimal dispatch Aggregate flexibility Stackelberg game Decentralized solution
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Maternal Thermal Effects on Female Reproduction and Hatchling Phenotype in the Chinese Skink(Plestiodon chinensis) 被引量:2
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作者 li ma Zhihua liN +3 位作者 Jianfang GAO Hong li Xiang JI Hongliang LU 《Asian Herpetological Research》 SCIE CSCD 2018年第4期250-257,共8页
We maintained gravid Chinese skinks(Plestiodon chinensis) at three constant temperatures(25, 28 and 31 °C) during gestation, and randomly assigned eggs from each female to one of the same three temperatures for i... We maintained gravid Chinese skinks(Plestiodon chinensis) at three constant temperatures(25, 28 and 31 °C) during gestation, and randomly assigned eggs from each female to one of the same three temperatures for incubation to determine maternal thermal effects on female reproduction and hatchling phenotype. Maternal temperature affected egg-laying date, hatching success and hatchling linear size(snout-vent length, SVL) but not clutch size, egg size, egg component, and embryonic stage at laying. More specifically, females at higher temperatures laid eggs earlier than did those at low temperatures, eggs laid at 31 °C were less likely to hatch than those laid at 25 °C or 28 °C, and hatchlings from eggs laid at 31 °C were smaller in SVL. Our finding that maternal temperature(pre-ovipositional thermal condition) rather than incubation temperature(post-ovipositional thermal condition) affected hatching success indicated that embryos at early stages were more vulnerable to temperature than those at late stages. Our data provide an inference that moderate maternal temperatures enhance reproductive fitness in P. chinensis. 展开更多
关键词 Developmental plasticity egg incubation female reproduction hatchling phenotype maternal thermal effect Plestiodon chinensis
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Preparation of cross-linked enzyme aggregates of nitrile hydratase ES-NHT-118 from E.coli by macromolecular cross-linking agent 被引量:5
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作者 liya Zhou Haixia Mou +3 位作者 Jing Gao li ma Ying He Yanjun Jiang 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第4期487-492,共6页
Cross-linked enzyme aggregates(CLEAs) of nitrile hydratase(NHase) ES-NHT-118 from Escherichia coli were prepared by using ammonium sulfate as precipitating agent followed by cross-linking with dextran polyaldehyde for... Cross-linked enzyme aggregates(CLEAs) of nitrile hydratase(NHase) ES-NHT-118 from Escherichia coli were prepared by using ammonium sulfate as precipitating agent followed by cross-linking with dextran polyaldehyde for the first time. In this process, egg white was added as protein feeder for facilitating the formation of CLEAs. The optimal conditions of the immobilization process were determined. Michaelis constants(Km) of free NHase and NHase CLEAs were also determined. The NHase CLEAs exhibited increased stability at varied pH and temperature conditions compared to its free counterpart. When exposed to high concentrations of acrylamide, NHase CLEAs also exhibited effective catalytic activity. 展开更多
关键词 nitrile linking acrylamide linker ammonium facilitating counterpart Michaelis dextran constants
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TNFα inhibitor C87 sensitizes EGFRvⅢ transfected glioblastoma cells to gefitinib by a concurrent blockade of TNFα signaling 被引量:1
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作者 li ma Chunhua She +13 位作者 Qian Shi Qiang Yin Xinxin Ji Yongrong Wang Yulong Fan Xinyao Kong Peng li Zengfeng Sun Xiaohui Zhang Zhen Zhang Jian Wang Tong Wang Yuanfu Xu Wenliang li 《Cancer Biology & Medicine》 SCIE CAS CSCD 2019年第3期606-617,共12页
Objective: More than half of human glioblastomas show EGFR gene amplification and mutation, but EGFR inhibitors have not been effective in treating EGFR-positive glioblastoma patients.The mechanism behind this type of... Objective: More than half of human glioblastomas show EGFR gene amplification and mutation, but EGFR inhibitors have not been effective in treating EGFR-positive glioblastoma patients.The mechanism behind this type of primary resistance is not well understood.The aim of this study was to investigate gefitinib resistance in glioblastoma, and explore ways to circumvent this significant clinical problem.Methods: MTT method was used to test the cell viability after EGFR-positive glioblastoma cells were treated with indicated drugs;real-time quantitative PCR method was included to detect the TNFα mRNA levels in glioma tissues and cell lines.ELISA was introduced to measure the TNFα protein levels in cell culture supernatant of glioblastoma cells treated with gefitinib.Western blot was used to detect the activity change of intracellular kinases in drug-treated glioblastoma cells.Two mouse xenograft tumor models were carried out to evaluate the in vivo effects of a combination of EGFR and TNFα inhibitors.Results: We found that glioblastoma resistance to gefitinib may be mediated by an adaptive pro-survival TNFα-JNK-Axl signaling axis, and that high TNFα levels in the glioblastoma microenvironment may further intensify primary resistance.A combination of the TNFα-specific small-molecule inhibitor C87 and gefitinib significantly enhanced the sensitivity of glioblastoma cells to gefitinib in vitro and in vivo.Conclusions: Our findings provide a possible explanation for the primary resistance of glioblastoma to EGFR inhibitors and suggest that dual blockade of TNFα and EGFR may be a viable therapeutic strategy for the treatment of patients with chemotherapy-refractory advanced glioblastoma. 展开更多
关键词 GLIOBLASTOMA EGFR TNFΑ INHIBITOR drug resistance
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Estimates of AGN Black Hole Mass and Minimum Variability Timescale 被引量:4
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作者 Guang-Zhong Xie Luo-En Chen +5 位作者 Huai-Zhen li li-Sheng mao Hong Dai Zhao-Hua Xie li ma Shu-Bai Zhou 《Chinese Journal of Astronomy and Astrophysics》 CSCD 2005年第5期463-470,共8页
Black hole mass is one of the fundamental physical parameters of active galactic nuclei (AGNs), for which many methods of estimation have been proposed. One set of methods assumes that the broad-line region (BLR) ... Black hole mass is one of the fundamental physical parameters of active galactic nuclei (AGNs), for which many methods of estimation have been proposed. One set of methods assumes that the broad-line region (BLR) is gravitationally bound by the central black hole potential, so the black hole mass can be estimated from the orbital radius and the Doppler velocity. Another set of methods assumes the observed variability timescale is determined by the orbital timescale near the innermost stable orbit around the Schwarzschild black hole or the Kerr black hole, or by the characteristic timescale of the accretion disk. We collect a sample of 21 AGNs, for which the minimum variability timescales have been obtained and their black hole masses (Mσ) have been well estimated from the stellar velocity dispersion or the BLR size-luminosity relation. Using the minimum variability timescales we estimated the black hole masses for 21 objects by the three different methods, the results are denoted by Ms, Mk and Md,respectively. We compared each of them with Mσ individually and found that: (1) using the minimum variability timescale with the Kerr black hole theory leads to small differences between Mσ and Mk, none exceeding one order of magnitude, and the mean difference between them is about 0.53 dex; (2) using the minimum variability timescale with the Schwarzschild black hole theory leads to somewhat larger difference between Mσ and Ms: larger than one order of magnitude for 6 of the 21 sources, and the mean difference is 0.74 dex; (3) using the minimum variability timescale with the accretion disk theory leads to much larger differences between Mσ and Md, for 13 of the 21 sources the differences are larger than two orders of magnitude; and the mean difference is as high as about 2.01 dex. 展开更多
关键词 galaxies: active - galaxies: nuclei - galaxies: fundamental parameters
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Bio-Based Waterborne Poly(Vanillin-Butyl Acrylate)/MXene Coatings for Leather with Desired Warmth Retention and Antibacterial Properties 被引量:1
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作者 Jianzhong ma li ma +3 位作者 Lei Zhang Wenbo Zhang Qianqian Fan Buxing Han 《Engineering》 SCIE EI CAS CSCD 2024年第5期250-263,共14页
This study presents a solvent-free,facile synthesis of a bio-based green antibacterial agent and aromatic monomer methacrylated vanillin(MV)using vanillin.The resulting MV not only imparted antibacterial properties to... This study presents a solvent-free,facile synthesis of a bio-based green antibacterial agent and aromatic monomer methacrylated vanillin(MV)using vanillin.The resulting MV not only imparted antibacterial properties to coatings layered on leather,but could also be employed as a green alternative to petroleum-based carcinogen styrene(St).Herein,MV was copolymerized with butyl acrylate(BA)to obtain waterborne bio-based P(MV-BA)miniemulsion via miniemulsion polymerization.Subsequently,MXene nanosheets with excellent photothermal conversion performance and antibacterial properties,were introduced into the P(MV-BA)miniemulsion by ultrasonic dispersion.During the gradual solidification of P(MV-BA)/MXene nanocomposite miniemulsion on the leather surface,MXene gradually migrated to the surface of leather coatings due to the cavitation effect of ultrasonication and amphiphilicity of MXene,which prompted its full exposure to light and bacteria,exerting the maximum photothermal conversion efficiency and significant antibacterial efficacy.In particular,when the dosage of MXene nanosheets was 1.4 wt%,the surface temperature of P(MV-BA)/MXene nanocomposite miniemulsioncoated leather(PML)increased by about 15℃ in an outdoor environment during winter,and the antibacterial rate against Escherichia coli and Staphylococcus aureus was nearly 100%under the simulated sunlight treatment for 30 min.Moreover,the introduction of MXene nanosheets increased the air permeability,water vapor permeability,and thermal stability of these coatings.This study provides a new insight into the preparation of novel,green,and waterborne bio-based nanocomposite coatings for leather,with desired warmth retention and antibacterial properties.It can not only realize zerocarbon heating based on sunlight in winter,reducing the use of fossil fuels and greenhouse gas emissions,but also improve ability to fight off invasion by harmful bacteria,viruses,and other microorganisms. 展开更多
关键词 MXene nanosheets VANILLIN Styrene substitute Leather coating Photothermal conversion Warmth retention Antibacterial properties
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2023:A year of accomplishments for the 13 Science Citation Index Expanded-and Emerging Sources Citation Index-indexed Baishideng journals 被引量:1
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作者 Jin-Lei Wang Jia-Ping Yan +22 位作者 Jia-Ru Fan Xiang li Xu Guo Jia-Wei li Yun-Xiaojian Wu Jing-Jie Wang Yu-Lu Chen li li Cong lin Xin-liang Qu Ji-Hong liu Yan-liang Zhang Ying-Yi Yuan Hua-Ge Yu Yu-Xi Chen Yi-Xuan Cai Xiang-Di Zhang Si Zhao Zi-Hang Xu li ma Na ma Diao-Mei Guo lian-Sheng ma 《World Journal of Gastroenterology》 SCIE CAS 2024年第1期9-16,共8页
In 2023,Baishideng Publishing Group(Baishideng)routinely published 47 openaccess journals,including 46 English-language journals and 1 Chinese-language journal.Our successes were accomplished through the collective de... In 2023,Baishideng Publishing Group(Baishideng)routinely published 47 openaccess journals,including 46 English-language journals and 1 Chinese-language journal.Our successes were accomplished through the collective dedicated efforts of Baishideng staffs,Editorial Board Members,and Peer Reviewers.Among these 47 Baishideng journals,7 are included in the Science Citation Index Expanded(SCIE)and 6 in the Emerging Sources Citation Index(ESCI).With the support of Baishideng authors,company staffs,Editorial Board Members,and Peer Reviewers,the publication work of 2023 is about to be successfully completed.This editorial summarizes the 2023 activities and accomplishments of the 13 SCIEand ESCI-indexed Baishideng journals,outlines the Baishideng publishing policy changes and additions made this year,and highlights the unique advantages of Baishideng journals. 展开更多
关键词 Baishideng Publishing Group Journal Impact Factor Open access Policy changes Policy additions Unique advantages Anxiety disorders Colorectal cancer Inflammatory bowel disease Hepatocellular carcinoma Gut microbes Atrial fibrillation
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Effect of information-motivation-behavioral skills model based perioperative nursing on pain in patients with gallstones 被引量:1
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作者 li ma Ying Yu +2 位作者 Bin-Juan Zhao Yan-Nan Yu Yu li 《World Journal of Gastrointestinal Surgery》 SCIE 2024年第7期2232-2241,共10页
BACKGROUND The incidence of cholecystolithiasis is on the rise.Use of information,motivation,and behavioral skills can play a positive role in promoting changes in individual health behaviors.However,reports on the ef... BACKGROUND The incidence of cholecystolithiasis is on the rise.Use of information,motivation,and behavioral skills can play a positive role in promoting changes in individual health behaviors.However,reports on the effects of information-motivationbehavioral(IMB)skills model based high-quality nursing as a perioperative nursing intervention for patients with gallstones are nonexistent.AIM To explore the application of IMB skills model based high-quality nursing in patients with gallstones.METHODS Two hundred and sixteen patients with cholecystolithiasis treated at our hospital from January 2022 to January 2023 were enrolled and divided into a control,highquality,and combined nursing groups,with 72 patients in each group.The control,high-quality,and combination groups received conventional,high-quality,and IMB skills model based perioperative nursing services,respectively.Differences in clinical indicators,stress levels,degree of pain,emotional state,and quality of life were observed,and complications and nursing satisfaction among the three groups were evaluated.RESULTS After nursing,the time to recovery of gastrointestinal function in the high-quality and combined nursing groups was significantly shorter than that of the control group,with the recovery of gastrointestinal function being the fastest in the combined nursing group(P<0.05).After nursing intervention,cortisol and norepinephrine levels in the high-quality and combined nursing groups were closer to normal than those of the control group 24 h after surgery,with the combined nursing group having the closest to normal levels(P<0.05).After 3 and 7 d of intervention,the patients’pain significantly improved,which was more prominent in the highquality and combination groups.Meanwhile,the pain score in the combination group was significantly lower than those of the control and high-quality nursing groups(P<0.05).After nursing intervention,the emotional states of all patients improved,and the scores of patients in the combination group were significantly lower than those of the control and high-quality nursing groups.The quality of life of patients in the high-quality and combined nursing groups significantly improved after nursing intervention compared to that of the control group,with the combined nursing group having the highest quality of life score.After intervention,the incidence of complications in the high-quality and combination groups was significantly lower than that of the control group(P<0.05),but the difference between the combination and high-quality nursing groups was not significant.Nursing satisfaction of patients in the high-quality and combination groups was significantly higher than that of the control group,with the nursing satisfaction being the highest in the combination group(P<0.05).CONCLUSION IMB skills model based nursing can improve surgical stress levels,degrees of pain,emotional state,quality of life,and nursing satisfaction of patients with gallstones and reduce the incidence of complications. 展开更多
关键词 Biliary calculi Information-motivation-behavioral skills model High quality care Perioperative period PAIN Application
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Software-aided detection and structural characterization of cyclic peptide metabolites in biological matrix by high-resolution mass spectrometry
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作者 Ming Yao Tingting Cai +3 位作者 Eva Duchoslav li ma Xu Guo Mingshe Zhu 《Journal of Pharmaceutical Analysis》 SCIE CAS CSCD 2020年第3期240-246,共7页
Compared to their linear counterparts,cyclic peptides show better biological activities,such as antibacterial,immunosuppressive,and anti-tumor activities,and pharmaceutical properties due to their conformational rigid... Compared to their linear counterparts,cyclic peptides show better biological activities,such as antibacterial,immunosuppressive,and anti-tumor activities,and pharmaceutical properties due to their conformational rigidity.However,cyclic peptides could form numerous putative metabolites from potential hydrolytic cleavages and their fragments are very difficult to interpret.These characteristics pose a great challenge when analyzing metabolites of cyclic peptides by mass spectrometry.This study was to assess and apply a software-aided analytical workflow for the detection and structural characterization of cyclic peptide metabolites.Insulin and atrial natriuretic peptide(ANP)as model cyclic peptides were incubated with trypsin/chymotrypsin and/or rat liver S9,followed by data acquisition using TripleTOF?5600.Resultant full-scan MS and MS/MS datasets were automatically processed through a combination of targeted and untargeted peak finding strategies.MS/MS spectra of predicted metabolites were interrogated against putative metabolite sequences,in light of a,b,y and internal fragment series.The resulting fragment assignments led to the confirmation and ranking of the metabolite sequences and identification of metabolic modification.As a result,29 metabolites with linear or cyclic structures were detected in the insulin incubation with the hydrolytic enzymes.Sequences of twenty insulin metabolites were further determined,which were consistent with the hydrolytic sites of these enzymes.In the same manner,multiple metabolites of insulin and ANP formed in rat liver S9 incubation were detected and structurally characterized,some of which have not been previously reported.The results demonstrated the utility of software-aided data processing tool in detection and identification of cyclic peptide metabolites. 展开更多
关键词 Atrial natriuretic peptide Metabolism of cyclic peptide High resolution mass spectrometry INSULIN Software-aided data processing
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Case management does not decrease mortality of patients with myocardial infarction or unstable angina:Evidence from a systematic review
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作者 li-Juan Yi Xu Tian +4 位作者 Ting Shuai Zi Zeng li ma Yan Wang Guo-Min Song 《International Journal of Nursing Sciences》 2016年第2期190-197,共8页
Objective:To objectively assess the impact of case management on patients with myocardial infarction or unstable angina.Methods:PubMed,EMBASE,Web of Science,Cochrane Library,China National Knowledge Infrastructure(CNK... Objective:To objectively assess the impact of case management on patients with myocardial infarction or unstable angina.Methods:PubMed,EMBASE,Web of Science,Cochrane Library,China National Knowledge Infrastructure(CNKI),and Chinese Biomedical Literature Database were searched for relevant randomized controlled trials(RCTs)published through February 2015.The quality of eligible studies was independently assessed by two investigators.The primary outcome assessed from included studies was all-cause mortality,with total cholesterol,systolic and diastolic blood pressures,smoking cessation rates and cost-effectiveness as secondary outcomes.The pooled effect sizes were expressed as relative risk,odds risk,and standard mean difference with 95%confidence intervals.Heterogeneity among studies was assessed using Cochrane Q and determined with an I2 statistic.Results:After the initial search,a total of four studies divided into six RCTs that included 1293 participants met the inclusion criteria and were analyzed.The results of meta-and descriptive analyses failed to identify any significant differences in all-cause mortality during the follow-up period of up to 36 months.Furthermore,a definitive conclusion for remaining indicators could not be drawn due to limited evidence.Conclusion:Case management is not beneficial to all-cause mortality after myocardial infarction or unstable angina compared to routine care.Additional,prospective RCTs of high quality and large scale are warranted to verify these results. 展开更多
关键词 Case management META-ANALYSIS Myocardial infarction Systematic review Unstable angina
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