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A new perspective on changes in vascular function due to hypoxia
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作者 Mengyuan Guo Weilin Liu +3 位作者 Zirui Xu Weihao Li Jia Liu Xunming Ji 《Journal of Translational Neuroscience》 2024年第3期1-14,共14页
This review discusses the functions of blood vessels such as coagulation,regulation,immunity,endocrinology,and nerve conduction from a new perspective and suggests that hypoxia plays a common role in the changes in va... This review discusses the functions of blood vessels such as coagulation,regulation,immunity,endocrinology,and nerve conduction from a new perspective and suggests that hypoxia plays a common role in the changes in vascular function in various cardiovascular and cerebrovascular diseases.Therefore,it is oxygen therapy regulation may be a particularly beneficial means by which to regulate vascular function due to its low risk of harm and ease of implementation.Further,the authors have identified a link between vascular function and diseases caused by endogenous hypoxia and analyzed it in depth.The potential effects of hypoxia regulation schemes such as hyperxia,hyperoxic-hypoxia alternations,hypoxia preconditioning,and intermittent hypoxia on vascular function are also discussed,and we present theoretical support for targeted vascular therapy. 展开更多
关键词 blood vessel function HYPOXIA hypoxia regulation vascular disease vascular intervention
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Silk-based nerve guidance conduits with macroscopic holes modulate the vascularization of regenerating rat sciatic nerve
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作者 Carina Hromada Patrick Heimel +10 位作者 Markus Kerbl LászlóGál Sylvia Nürnberger Barbara Schaedl James Ferguson Nicole Swiadek Xavier Monforte Johannes C.Heinzel Antal Nógrádi Andreas H.Teuschl-Woller David Hercher 《Neural Regeneration Research》 SCIE CAS 2025年第6期1789-1800,共12页
Peripheral nerve injuries induce a severe motor and sensory deficit. Since the availability of autologous nerve transplants for nerve repair is very limited, alternative treatment strategies are sought, including the ... Peripheral nerve injuries induce a severe motor and sensory deficit. Since the availability of autologous nerve transplants for nerve repair is very limited, alternative treatment strategies are sought, including the use of tubular nerve guidance conduits(tNGCs). However, the use of tNGCs results in poor functional recovery and central necrosis of the regenerating tissue, which limits their application to short nerve lesion defects(typically shorter than 3 cm). Given the importance of vascularization in nerve regeneration, we hypothesized that enabling the growth of blood vessels from the surrounding tissue into the regenerating nerve within the tNGC would help eliminate necrotic processes and lead to improved regeneration. In this study, we reported the application of macroscopic holes into the tubular walls of silk-based tNGCs and compared the various features of these improved silk^(+) tNGCs with the tubes without holes(silk^(–) tNGCs) and autologous nerve transplants in an 8-mm sciatic nerve defect in rats. Using a combination of micro-computed tomography and histological analyses, we were able to prove that the use of silk^(+) tNGCs induced the growth of blood vessels from the adjacent tissue to the intraluminal neovascular formation. A significantly higher number of blood vessels in the silk^(+) group was found compared with autologous nerve transplants and silk^(–), accompanied by improved axon regeneration at the distal coaptation point compared with the silk^(–) tNGCs at 7 weeks postoperatively. In the 15-mm(critical size) sciatic nerve defect model, we again observed a distinct ingrowth of blood vessels through the tubular walls of silk^(+) tNGCs, but without improved functional recovery at 12 weeks postoperatively. Our data proves that macroporous tNGCs increase the vascular supply of regenerating nerves and facilitate improved axonal regeneration in a short-defect model but not in a critical-size defect model. This study suggests that further optimization of the macroscopic holes silk^(+) tNGC approach containing macroscopic holes might result in improved grafting technology suitable for future clinical use. 展开更多
关键词 axon regeneration blood vessel functional recovery macroporous nerve lesion peripheral nerve repair sciatic nerve silk-based nerve guidance conduit vascularIZATION
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Effects of repetitive transcranial magnetic stimulation on cognitive function and cholinergic activity in the rat hippocampus after vascular dementia 被引量:36
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作者 Xiao-Qiao Zhang Li Li +2 位作者 Jiang-Tao Huo Min Cheng Lin-Hong Li 《Neural Regeneration Research》 SCIE CAS CSCD 2018年第8期1384-1389,共6页
Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive treatment that can enhance the recovery of neurological function after stroke. Whether it can similarly promote the recovery of cognitive functio... Repetitive transcranial magnetic stimulation (rTMS) is a non-invasive treatment that can enhance the recovery of neurological function after stroke. Whether it can similarly promote the recovery of cognitive function after vascular dementia remains unknown, In this study, a rat model for vascular dementia was established by the two-vessel occlusion method. Two days after injury, 30 pulses of rTMS were ad- ministered to each cerebral hemisphere at a frequency of 0.5 Hz and a magnetic field intensity of 1,33 T. The Morris water maze test was used to evaluate learning and memory function. The Karnovsky-Roots method was performed to determine the density of cholinergic neurons in the hippocampal CA1 region. Immunohistochemical staining was used to determine the number of brain-derived neurotroph- ic factor (BDNF)-immunoreactive cells in the hippocampal CA1 region, rTMS treatment for 30 days significantly improved learning and memory function, increased acetylcholinesterase and choline acetyltransferase activity, increased the density of cholinergic neurons, and increased the number of BDNF-immunoreactive cells. These results indicate that rTMS can ameliorate learning and memory deficiencies in rats with vascular dementia, The mechanism through which this occurs might be related to the promotion of BDNF expression and subsequent restoration of cholinergic system activity in hippocampal CA 1 region. 展开更多
关键词 nerve regeneration cholinergic system neurotrophic factor hippocampal CA1 region learning and memory function repetitivetranscranial magnetic stimulation vascular dementia neural regeneration
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Scalp electroacupuncture at the Baihui acupoint (DU 20) improves functional recovery in rats with cerebral ischemia Association with increased expression of vascular endothelial growth factors 被引量:4
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作者 Min-Wook Kim You Chul Chung +11 位作者 Hee Chan Jung Moon-Seo Park Young-Min Han Yong-An Chung Lee-So Maeng Sang-In Park Jiyeon Lim Seung Chan Kim Woo-Seok Im Jin Young Chung Minky Kim Manho Kim 《Neural Regeneration Research》 SCIE CAS CSCD 2011年第36期2822-2828,共7页
In this study, we induced cerebral infarction in rats by occluding the right middle cerebral artery, and tested the effects of electroacupuncture at the Baihui acupoint (DU 20). Motor and sensory function was tested... In this study, we induced cerebral infarction in rats by occluding the right middle cerebral artery, and tested the effects of electroacupuncture at the Baihui acupoint (DU 20). Motor and sensory function was tested using Garcia’s scale and motor weakness grading, and the expression of vascular endothelial growth factor in the brain was quantified using immunoblotting and immunohistochemistry. We found that scalp electroacupuncture at DU 20 significantly improved motor performance and sensory function in rats with stroke, and this was accompanied by an increased expression of vascular endothelial growth factor in the ischemic brain tissue and peri-ischemic area. In addition, Pearson correlation analysis showed that the improvements in functional recovery were correlated with the increased expression of vascular endothelial growth factor. 展开更多
关键词 ELECTROACUPUNCTURE cerebrovascular disorder vascular endothelial growth factor Baihui acupoint functional improvement
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Antioxidant Activities and Inhibitory Effects of <i>Auricularia Auricular</i>and Its Functional Formula Diet Against Vascular Smooth Muscle Cell <i>in Vitro</i> 被引量:5
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作者 Yangchao Luo Zhenlei Xiao +2 位作者 Qin Wang Bo Li Baoping Li 《Food and Nutrition Sciences》 2011年第4期265-271,共7页
The functional formula diet AHP, containing polysaccharides from Auricularia auricular, polyphenolic compounds from Hawthorn (Crataegus) and Pueraria radix, has been recently developed as a dietary intervention agains... The functional formula diet AHP, containing polysaccharides from Auricularia auricular, polyphenolic compounds from Hawthorn (Crataegus) and Pueraria radix, has been recently developed as a dietary intervention against dyslipidemia in our previous study. In the present study, its antioxidant activities and protective effects against proliferation of vascular smooth muscle cells (VSMCs) were investigated. AHP possessed the potent radical-scavenging effects against hydroxyl and superoxide radicals, and also the inhibitory effects against peroxidation of low density lipoprotein induced by Cu2+ in vitro. The protective effects of AHP against proliferation of VSMCs were evaluated through the methodology of serum pharmacology. The serum containing AHP significantly inhibited the proliferation of VSMCs induced by oxidized low density lipoprotein in a time- and dose-dependent manner, and also promoted the nitric oxide production of VSMCs. Our study indicated that this functional formula diet would be a potent alternative as a functional diet to prevent atherosclerosis at early stage. 展开更多
关键词 functional DIET AURICULARIA Auricula ANTIOXIDANT Activity vascular Smooth Muscle Cells Serum Pharmacology
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Vascular Endothelial Glycocalyx as a Mechanism of Vascular Endothelial Dysfunction and Atherosclerosis 被引量:2
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作者 Minako Yamaoka-Tojo 《World Journal of Cardiovascular Diseases》 2020年第10期731-749,共19页
Atherosclerosis occurs as a result of organized processes that include vascular endothelial dysfunction, lipid accumulation, abnormal inflammatory reaction, excessive reactive oxygen species production, and vascular c... Atherosclerosis occurs as a result of organized processes that include vascular endothelial dysfunction, lipid accumulation, abnormal inflammatory reaction, excessive reactive oxygen species production, and vascular cell proliferation and migration. In patients with atherosclerosis, vascular endothelial dysfunction is commonly observed with the damage of vascular endothelial glycocalyx, which is an extracellular matrix bound to and encapsulating the endothelial cells that line the blood vessel wall. Unhealthy lifestyle choices such as smoking and physical inactivity also induce glycocalyx degradation. Additionally, vascular endothelial glycocalyx can be damaged by various pathological conditions including dehydration, acute infectious disease, trauma, sepsis, acute respiratory distress syndrome, Kawasaki disease, preeclampsia, gestational diabetes mellitus, hypertension, diabetes mellitus, chronic kidney disease, atherosclerosis, stroke, dementia, microvascular angina, acute coronary syndrome, and heart failure. Vascular endothelial glycocalyx has been shown to be important as a physical cytoprotective barrier for vascular endothelial cells and as a regulatory mechanism for intracellular cell signaling. Therefore, vascular endothelial glycocalyx has immense potential in the exploration of novel strategies for the evaluation of beneficial conditions of healthy vasculature. 展开更多
关键词 vascular Endothelial function INFLAMMATION Oxidative Stress Cardiovascular Disease Prevention Disease Management
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The Effects of Naoxintong Capsule on the Vascular Endothelial Function and Inflammatory Factors in Spontaneously Hypertensive Rats 被引量:1
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作者 Yimin Wang Tao Zhao 《Journal of Health Science》 2018年第6期420-426,共7页
Objective:To investigate the effects of Naoxintong(NXT)capsule on vascular endothelial function and inflammatory mechanism in spontaneously hypertensive rats.Methods:A total of 100 spontaneously hypertensive rats were... Objective:To investigate the effects of Naoxintong(NXT)capsule on vascular endothelial function and inflammatory mechanism in spontaneously hypertensive rats.Methods:A total of 100 spontaneously hypertensive rats were divided into model group,positive control group,NXT low-dose group,NXT medium-dose group and NXT high-dose group.Rats in the model group were given an equal dose of normal saline once a day;the positive control group was given telmisartan 50 mg/(kg·d)once a day;the low,middle and high dose groups were given the NTX 0.5,1.0,2.0 mg/(kg·d)once a day,respectively.Rats in each group were continuously intragastrically administered for 12 weeks.The vascular endothelial function index,inflammation index and blood pressure of each group were observed at the end of 8 weeks.Results:Endothelin(ET),interleukin-6(IL-6),tumor necrosis factor-α(TNF-α),C-reactive protein(CRP)and systolic blood pressure levels were lower in the positive control group and NXT group compared with model group.In the model group,the NO level was lower than the positive control group and NXT group;the levels of ET,IL-6,TNF-α,CRP and systolic blood pressure in the middle-dose group and the high-dose group were lower than those in the positive control group and NXT low-dose group.Furthermore,the level of NO was higher in positive control group and NXT middle and high dose group compared with model group.The levels of ET,IL-6,TNF-α,CRP and systolic pressure in NXT high dose group were lower than in NXT middle dose group,while the level of NO was higher in NXT high group than in NXT middle dose group and the difference was statistically significant(p<0.05).Conclusions:NXT has obviously antihypertensive effect on spontaneously hypertensive rats,and its mechanism may be related to the improvement of vascular endothelial function and inflammatory factors. 展开更多
关键词 NAOXINTONG CAPSULE SPONTANEOUS hypertension vascular ENDOTHELIAL function inflammatory factor.
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Effect of Trimetazidine Dihydrochloride Tablets adjuvant therapy on inflammatory reaction, oxidative stress, vascular endothelial function and myocardial function in patients with coronary heart disease complicated with heart failure 被引量:2
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作者 Cai-Wen Wei Zhi-Hua Li +3 位作者 Lei Song Da-Min Huang Ying-Min Lu Xiao-Han Luo 《Journal of Hainan Medical University》 2017年第21期21-25,共5页
Objective: To investigate the effects of Trimetazidine Dihydrochloride Tablets on inflammatory reaction, oxidative stress, vascular endothelial function and myocardial function in patients with coronary heart disease ... Objective: To investigate the effects of Trimetazidine Dihydrochloride Tablets on inflammatory reaction, oxidative stress, vascular endothelial function and myocardial function in patients with coronary heart disease complicated with heart failure. Methods: A total of 98 patients with coronary heart disease and heart failure who met the criteria of the study were selected as the subjects, based on the random data table they were divided into the control group (n=49) and observation group (n=49), the patients in the control group were treated with Metoprolol Tartrate Sustained-release Tablets treatment, and the patients in the observation group were treated with Metoprolol Tartrate Sustained-release Tablets combined with Trimetazidine Dihydrochloride Tablets, the levels of inflammatory reaction, oxidative stress, vascular endothelial function and myocardial function indexes were compared between the two groups before and after treatment. Results: The difference of the CRP, TNF-α, MDA, SOD, NO, ET-1, LVEF, LVEDD and LVESD levels in the two groups before treatment were not statistically significant;Compared with the levels of the two groups before treatment, the two groups of CRP, TNF-α, MDA, ET-1, LVEDD and LVESD levels after treatment were significantly decreased, and the level of the observation group after treatment was significantly lower than those levels in the control group, the difference was statistically significant;The levels of SOD, NO and LVEF of the two groups after treatment were significantly higher than those in the same group before treatment, and the observation group levels [(88.09±7.51) U/ml, (72.58±14.64) mol/L, (48.34±5.09)% ] were significantly higher than the control group [(79.44±7.27) U/ml, (61.89±11.06) mol/L, (44.19±4.58)%], the difference was statistically significant. Conclusion: Trimetazidine Dihydrochloride Tablets in the treatment of coronary heart disease with heart failure can effectively inhibit the release of inflammatory factors, improve oxidative stress state, vascular endothelial function and myocardial function, has an important clinical value. 展开更多
关键词 Coronary HEART disease with HEART failure TRIMETAZIDINE Dihydrochloride TABLETS Inflammatory factors Oxidative stress vascular ENDOTHELIAL function Myocardial function
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miR-181b promotes angiogenesis and neurological function recovery after ischemic stroke 被引量:5
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作者 Li-Xia Xue Lin-Yuan Shu +6 位作者 Hong-Mei Wang Kai-Li Lu Li-Gang Huang Jing-Yan Xiang Zhi Geng Yu-Wu Zhao Hao Chen 《Neural Regeneration Research》 SCIE CAS CSCD 2023年第9期1983-1989,共7页
Promotion of new blood vessel formation is a new strategy for treating ischemic stroke.Non-coding miRNAs have been recently considered potential therapeutic targets for ischemic stroke.miR-181b has been shown to promo... Promotion of new blood vessel formation is a new strategy for treating ischemic stroke.Non-coding miRNAs have been recently considered potential therapeutic targets for ischemic stroke.miR-181b has been shown to promote angiogenesis in hypoxia and traumatic brain injury model,while its effect on ischemic stroke remains elusive.In this study,we found that overexpression of miR-181b in brain microvascular endothelial cells subjected to oxygen-glucose deprivation in vitro restored cell prolife ration and enhanced angiogenesis.In rat models of focal cerebral ischemia,ove rexpression of miR-181b reduced infarction volume,promoted angiogenesis in ischemic penumbra,and improved neurological function.We further investigated the molecular mechanism by which miR-181b participates in angiogenesis after ischemic stroke and found that miR-181b directly bound to the 3’-UTR of phosphatase and tensin homolog(PTEN) mRNA to induce PTEN downregulation,leading to activation of the protein kinase B(Akt) pathway,upregulated expression of vascular endothelial growth facto rs,down-regulated expression of endostatin,and promoted angiogenesis.Taken togethe r,these results indicate that exogenous miR-181b exhibits neuroprotective effects on ischemic stro ke through activating the PTEN/Akt signal pathway and promoting angiogenesis. 展开更多
关键词 Akt ANGIOGENESIS ENDOSTATIN ischemic stroke middle cerebral artery occlusion miR-181b neurological function recovery oxygen-glucose deprivation PTEN vascular endothelial growth factor
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Effect of rosuvastatin on the vascular endothelial function and inflammatory cytokine in patients after PCI 被引量:1
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作者 Hui Li Yan-Chun Xu 《Journal of Hainan Medical University》 2017年第2期21-24,共4页
Objective:To evaluate the effect of rosuvastatin on the vascular endothelial function and inflammatory cytokine in patients after PCI.Methods:A total of 120 patients with ACS who were admitted in our hospital from Dec... Objective:To evaluate the effect of rosuvastatin on the vascular endothelial function and inflammatory cytokine in patients after PCI.Methods:A total of 120 patients with ACS who were admitted in our hospital from December, 2014 to June, 2016 were included in the study and randomized into the observation group and the control group. PCI was performed in the two groups. The patients in the control group were given routine treatments. On this basis, the patients in the observation group were given rosuvastatin (20 mg) 3 d before operation, every night before sleep, continuously for 1 month. The efficacy was evaluated 24 h and 1 month after operation. Hs-CRP, IL-10, TNF-α, vWF, ET-1, NO, TG, TC, and LDL levels before operation, 24 h and 1 month after operation in the two groups were detected.Results:vWF and ET-1 levels 1 month after operation in the observation group were significantly lower than those in the control group, while NO was significantly higher than that in the control group. hs-CRP, IL-10, and TNF-α 24 h and 1 month after operation in the observation group were significantly lower than those in the control group. TC, TG, and LDL levels 24 h and 1 month after operation in the observation group were significantly lower than those in the control group.Conclusions:Rosuvastatin can effectively reduce the serum inflammatory cytokine level, improve the vascular endothelial function, and decrease the occurrence of thrombus and restenosis in patients with ACS after PCI. 展开更多
关键词 ROSUVASTATIN ACS PCI After operation vascular ENDOTHELIAL function INFLAMMATORY CYTOKINE
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Influence of folic acid and vitamin B12 combined therapy on plasma Hcy, inflammatory factor levels and blood vessels endothelial function in patients with vascular dementia and type H hypertension 被引量:1
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作者 Zhou-Yi Wang Gang Zhou +3 位作者 Gang Li Zhan-Chi Xiao Guang-Ming Xia Hao-Te Chen 《Journal of Hainan Medical University》 2017年第5期152-156,共5页
Objective:To investigate influence of folic acid and vitamin B12 combined therapy on plasma homocysteine (Hcy) level, blood vessels endothelial function and inflammatory factors in patients with vascular dementia and ... Objective:To investigate influence of folic acid and vitamin B12 combined therapy on plasma homocysteine (Hcy) level, blood vessels endothelial function and inflammatory factors in patients with vascular dementia and type H hypertension.Methods:100 cases of patients with vascular dementia and type H hypertension accorded with the inclusion criteria were selected as research objects. They were randomly divided as the control group and the therapeutic group, 50 cases each. For control group, Enalapril tablets were administered by mouth for treatment. For therapeutic group, folic acid and vitamin B12 treatment were provided on the basis of treatment for control group. Treatments were continued for 12 weeks. Plasma Hcy levels, inflammatory factors [(interleukin-6 (IL-6), interleukin-8 (IL-8) and hypersensitive C reaction protein (hs-CRP)], blood vessels endothelial function indexes variation in patients before and after treatment were observed and detected.Results:Plasma Hcy, IL-6, IL-8 and hs-CRP levels in two groups of patients after treatment were significantly decreased comparing with the same group before treatment, and the above index levels in therapeutic group after treatment were significantly lower than control group (P<0.05);For comparison of blood vessels endothelial function indexes in the patients, NO levels in two groups after treatment were increased in various degrees, and endothelin-1 (ET-1) were decreased. The differences between levels of the two indexes in therapeutic group before and after treatment were significant, and levels after treatment in therapeutic group were significantly better than in control group (P<0.05). While variations of the differences in control group before and after treatment were not significant (P>0.05);After treatment, diastolic pressure and systolic pressure in the two groups of patients were significantly improved comparing with before treatment (P<0.05). However, after treatment, the differences of levels between therapeutic group and control group were not significant (P>0.05). MMSE score in therapeutic group after treatment was significantly higher than before treatment, and significantly higher than in control group (P<0.05).Conclusions: Combined therapy of folic acid and vitamin B12 for treating vascular dementia with type H hypertension could effectively decrease plasma Hcy and inflammatory factor levels, and improve blood vessels endothelial function and dementia degree on patients. It has certain clinical value which deserves to be promoted. 展开更多
关键词 vascular DEMENTIA with type H HYPERTENSION Folic acid VITAMIN B12 HCY Inflammatory factor Blood vessels endothelial function
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Determination of phagocytic functions of macrophages, vascular density and NPY-nerve within autotransplanted splenic tissue in adult rats
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作者 蒋登金 郭光金 +4 位作者 张坤 兰阳军 王林 张天飞 左艳芳 《Journal of Medical Colleges of PLA(China)》 CAS 2004年第5期267-271,共5页
Objective: To estimate directly phagocytic functions of the macrophages because of the importance in innate immunity, determine blood vessel density and re-innervation density which are basis of function. Methods: Eig... Objective: To estimate directly phagocytic functions of the macrophages because of the importance in innate immunity, determine blood vessel density and re-innervation density which are basis of function. Methods: Eighty adult Wistar rats were randonjy divided into experimental and control groups.The formers underwent splenotomy and a half splenie slice was transplanted into greater omentum. The latter only moved. After 6 months, examination was made as follows: ① After injection of 0.4% carbon particles by vein, spleme tissues were taken out at different times for estimating phagocytosis by light microscope. ② When splenic tissues had been intubated into left ventricle under total anesthesia, animals were perfused by formalin and India ink mixture suspension. Splenic tissues were taken out for making sections for measurement of area density of blood vessels.③ Immunohistochemical procedure was used for detecting neuropeptide Y(NPY). Results: Phagocytie functions had no difference between two groups, hut the area density of blood vessels and NPY-positive fibers re-dued (P<0.01) in experimental group. Conclusion:Autotransplanted splenic tissues show good innate immunity though regeneration of blood vessels and nerves do not reach normal level. 展开更多
关键词 phagocytic functions vascular density NPY-nerve autotransplanted splenic tissue
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Protective effects of sodium ferulate in vascular endothelial function during cardiopulmonary bypass 被引量:1
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作者 廖健毅 《外科研究与新技术》 2011年第3期167-167,共1页
Objective Cardiopulmonary bypass (CPB) and its related ischemia reperfusion injury may cause endothelial cell injury. To study the protective effects of sodium ferulate in vascular endothelial function during CPB by t... Objective Cardiopulmonary bypass (CPB) and its related ischemia reperfusion injury may cause endothelial cell injury. To study the protective effects of sodium ferulate in vascular endothelial function during CPB by testing the changes of vascular endothelial cell(CEC) ,nitric oxide(NO) and endothelin-1 (ET-1) in children with congenital heart disease. Methods Sixty patients 展开更多
关键词 Protective effects of sodium ferulate in vascular endothelial function during cardiopulmonary bypass CEC
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Bilayer nicorandil-loaded small-diameter vascular grafts improve endothelial cell function via PI3K/AKT/eNOS pathway
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作者 Zheng Xing Chen Zhao +2 位作者 Chunchen Zhang Yubo Fan Haifeng Liu 《Bio-Design and Manufacturing》 SCIE EI CSCD 2021年第1期72-86,共15页
For the surgical treatment of cardiovascular disease(CVD),there is a clear and unmet need in developing small-diameter(diameter<6 mm)vascular grafts.In our previous work,sulfated silk fibroin(SF)was successfully fa... For the surgical treatment of cardiovascular disease(CVD),there is a clear and unmet need in developing small-diameter(diameter<6 mm)vascular grafts.In our previous work,sulfated silk fibroin(SF)was successfully fabricated as a potential candidate for preparing vascular grafts due to the great cytocompatibility and hemocompatibility.However,vascular graft with single layer is difficult to adapt to the complex internal environment.In this work,polycaprolactone(PCL)and sulfated SF were used to fabricate bilayer vascular graft(BLVG)to mimic the structure of natural blood vessels.To enhance the biological activity of BLVG,nicorandil(NIC),an FDA-approved drug with multi-bioactivity,was loaded in the BLVG to fabricate NIC-loaded BLVG.The morphology,chemical composition and mechanical properties of NIC-loaded BLVG were assessed.The results showed that the bilayer structure of NIC-loaded BLVG endowed the graft with a biphasic drug release behavior.The in vitro studies indicated that NIC-loaded BLVG could significantly increase the proliferation,migration and antioxidation capability of endothelial cells(ECs).Moreover,we found that the potential biological mechanism was the activation of PI3K/AKT/eNOS signaling pathway.Overall,the results effectively demonstrated that NIC-loaded BLVG had a promising in vitro performance as a functional small-diameter vascular graft. 展开更多
关键词 Bilayer vascular grafts NICORANDIL Sulfated silk fibroin Endothelial cell function PI3K/AKT/eNOS pathway
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Effects of α-lipoic acid on oxidative stress, vascular endothelium function and renal function in patients with diabetic nephropathy
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作者 Chun-Mei Qu Shu-Mei Chen +1 位作者 You-Zhi Zhang Chao Fang 《Journal of Hainan Medical University》 2018年第2期24-27,共4页
Objective:To investigate the effects ofα-lipoic acid on oxidative stress, vascular endothelium function and renal function in diabetic nephropathy patients.Methods: According to random data table method, a total of 8... Objective:To investigate the effects ofα-lipoic acid on oxidative stress, vascular endothelium function and renal function in diabetic nephropathy patients.Methods: According to random data table method, a total of 80 patients with diabetic nephropathy from September 2016 to August 2017 were divided into observation group and control group (n=40). The patients of control group were treated with routine therapy while the patients of observation group were given intravenous infusion ofα-lipoic acid on the basis of conventional therapy. The levels of oxidative stress, vascular endothelium function and renal function changes were compared between the two groups before and after the treatment.Results:The levels of SOD, MDA, NO, ET-1, RBP and CysC in the two groups before treatment were not statistically significant. Compared with the levels before treatment, the level of SOD in the observation group was significantly increased and the level of MDA was significantly decreased;the level of SOD in the observation group was significantly higher than that in the control group, and the level of MDA was significantly lower than that of the control group;the above differences were statistically significant. The levels of SOD and MDA had no significant changes in the control group before and after treatment. After treatment, the levels of ET-1, RBP and CysC in the two groups were significantly lower than those in the same group before treatment, and the observation group levels were significantly lower than those in the control group;the levels of NO in the two groups after treatment were significantly higher than those in the same group before treatment, and the observation group was significantly higher than that of the control group;the above differences were statistically significant.Conclusions: On the basis of conventional treatment, combining withα-lipoic acid can better reduce the level of oxidative stress, improve vascular endothelial function, renal function in patients with diabetic nephropathy, which has an important clinical value. 展开更多
关键词 α-lipoic acid DIABETIC NEPHROPATHY Oxidative stress vascular ENDOTHELIUM function RENAL function
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Effect of minimally invasive surgery under anus and colonoscopy on pain stress, gastrointestinal hormones and vascular endothelial function in patients with rectal cancer
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作者 YE Shao-Bing LIU Gao +1 位作者 PU Zhi-Zhong XIE Min 《Journal of Hainan Medical University》 2019年第17期50-54,共5页
Objective: To discuss the effects of minimally invasive surgery under transrectal anoscope on pain stress, gastrointestinal hormones and vascular endothelial function in patients with rectal cancer. Methods Totally 64... Objective: To discuss the effects of minimally invasive surgery under transrectal anoscope on pain stress, gastrointestinal hormones and vascular endothelial function in patients with rectal cancer. Methods Totally 64 patients with rectal cancer who underwent minimally invasive surgery under transanal anastomosis from January 2017 to December 2018 in our hospital were selected as the observation group and the retrospective analysis of clinical data was conducted. Another 64 patients who underwent traditional laparotomy at the same time in our hospital were selected as the control group. Pain stress, gastrointestinal hormones, vascular endothelial function, and tumor marker changes were compared between the two groups. Results There were no significant differences in pain stress index, gastrointestinal hormone, vascular endothelial function index and tumor marker level between the two groups before operation (P>0.05). After operation, the levels of SP, BK and PGE2 in the two groups were higher than those before surgery (P<0.05), and the levels of GAS, MTL, VIP, VEGF, MMP-9, ET-1, CEA, CA724, CA125 and CA19-9 were higher with preoperative reduction of P<0.05. The levels of SP, BK, PGE2, VEGF, MMP-9, ET-1, CEA, CA724, CA125 and CA19-9 in the observation group after operation were lower than those in the control group (P<0.05), and the GAS, MTL and VIP levels were significantly higher than the control group (P<0.05). Conclusion Minimally invasive surgery under transanal anoscope can reduce the pain stress of patients with rectal cancer, and the influence of gastrointestinal hormones is slight. It can effectively reduce the vascular endothelial function index and tumor marker level, help the immune function recovery of patients, and promote postoperative rehabilitation of patients. 展开更多
关键词 Proctoscopy RECTAL cancer PAIN STRESS Gastrointestinal HORMONE vascular endothelial function
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Effect of Guhong injection combined with atyplase on vascular endothelial function and fibrinolytic system and related factors in patients with acute cerebral infarction
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作者 Song Wang Chun-Li Zhu +1 位作者 Xiao-Hong Zhang Bo Zhang 《Journal of Hainan Medical University》 2019年第14期23-26,共4页
Objective:To explore the effect of Guhong Injection combined with atyplase on vascular endothelial function and fibrinolytic system and related factors in patients with acute cerebral infarction.Methods:To select 90 p... Objective:To explore the effect of Guhong Injection combined with atyplase on vascular endothelial function and fibrinolytic system and related factors in patients with acute cerebral infarction.Methods:To select 90 patients with acute cerebral infarction in our hospital,divided into control group(48 cases)and observation group(48 cases)randomly.Patients in the control group were treated with alteplase on the basis of routine symptomatic treatment,and the observation group was treated with Guhong injection on the basis of the control group.Before and after treatment,the serum levels of related factors were detected and compared between the two groups.Results:Before treatment,there were no significant differences in serum related factors(ET-1,PAO,H-FABP,VEGF,S100β,BDNF,CEC,Fibulin-5,vWF,P-selectin,t-PA,PAI-1)between the two groups;After treatment,the serum levels of ET-1,PAO,H-FABP,S100β,CEC,Fibulin-5,vWF,P-selectin,PAI-1 in the observation group were significantly lower than those in the control group,and the serum levels of VEGF,BDNF and t-PA were higher than those in the control group,there were significant differences between the two groups.Conclusion:Guhong injection was added to patients with acute cerebral infarction on the basis of routine symptomatic treatment and ateplase,could significantly improve the level of serum related factors,it was more conducive to the control of symptoms and rehabilitation of patients,the effect was definite,it was worth further study and application in clinic. 展开更多
关键词 Acute cerebral INFARCTION Guhong injection ALTEPLASE vascular ENDOTHELIAL function FIBRINOLYTIC system
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Effect of erythropoietin combined with PCI on myocardial damage and vascular endothelial function in patients with STEMI
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作者 Wei Huang Ji-Tian Zhu Qian Li 《Journal of Hainan Medical University》 2019年第4期25-28,共4页
Objective:To investigate the effects of erythropoietin combined with percutaneous coronary intervention (PCI) on myocardial damage, vascular endothelial function and neuroendocrine hormone levels in patients with ST-s... Objective:To investigate the effects of erythropoietin combined with percutaneous coronary intervention (PCI) on myocardial damage, vascular endothelial function and neuroendocrine hormone levels in patients with ST-segment elevation myocardial infarction (STEMI).Method:From August 2015 to February 2018, 80 patients with STEMI were selected from our hospital, divided into 2 groups according to admission time, 40 cases in each group, set to observation group and control group, the observation group was treated with erythropoietin combined with PCI, and the control group was treated only with PCI, to compare the degree of myocardial damage, vascular endothelial function and neuroendocrine hormone levels after treatment. Results: At 24 h after surgery, the observed group of cardiac troponin (cTNI), creatine kinase isoenzyme (CK-MB), type I collagen carboxy terminal peptide (ICTP) and ischemic modified albumin (IMA) is lower than the control group,the cystatin-C (Cys-C) level is higher than the control group, the difference was statistically significant (P<0.05);At 1 week after surgery, the levels of endothelin-1 (ET-1) and von Willebrand factor (vWF) in the observation group were lower than the control group, and the level of nitric oxide (NO) was higher than that in the control group, the difference was statistically significant (P<0.05);At 1 week after surgery, the levels of cortisol (Cor), adrenocortical hormone (ACTH), norepinephrine (NE) and Angiotensin II (AngII) in the observation group were lower than in the control group, the difference was statistically significant (P<0.05).Conclusion: Erythropoietin combined with PCI in the treatment of STEMI patients with better clinical effect, can effectively reduce the degree of myocardial damage, protect vascular endothelial cell function, improve the body's neuroendocrine hormone levels, recommend clinical application. 展开更多
关键词 ERYTHROPOIETIN PCI STEMI Degree of myocardial damage vascular ENDOTHELIAL function NEUROENDOCRINE HORMONE
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Effect of low-dose aspirin and Danshen injection on hemorheology, vascular endothelial function and oxidative stress in pregnancy-induced hypertension
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作者 Hao Li Ai-Ping Ma 《Journal of Hainan Medical University》 2018年第6期63-67,共5页
Objective:To investigate the effect of low dose aspirin and salvia miltiorrhiza injection on hemorrheology, endothelial function and oxidative stress in patients with pregnancy induced hypertension.Methods: One hundre... Objective:To investigate the effect of low dose aspirin and salvia miltiorrhiza injection on hemorrheology, endothelial function and oxidative stress in patients with pregnancy induced hypertension.Methods: One hundred and eighty pregnancy-induced hypertension patients treated in our hospital from April 2015 to November 2016 were selected as study subjects and randomly divided into control group and observation group with 90 cases in each group. The control group was given routine treatment. The observation group was treated with low-dose aspirin plus Salvia miltiorrhiza in the control group. After treatment, blood rheology, vascular endothelial function and oxidative stress were measured in two groups.Results: The levels of MAP and 24 h Upro in both groups were significantly lower than those before treatment. After treatment, the MAP and 24 h Upro levels in the observation group were significantly lower than those in the control group. After treatment, the level of PT was significantly higher than that before treatment, while the level of DD and Fg was significantly lower than that before treatment. Comparing the two groups after treatment showed that the PT level, and the levels of DD and Fg were significantly lower than those in the control group;After treatment, NO levels in both groups were significantly higher than those before treatment, ET-1 and ET-1/NO levels were significantly lower than before treatment, after treatment, ET-1, NO and ET The NO level in the observation group was significantly higher than that in the control group, while ET-1 and ET-1/NO levels were significantly lower than those in the control group;Compared with those before treatment, the levels of SOD in the two groups were significantly increased and MDA significantly decreased after treatment. The SOD and MDA levels in the two groups after treatment showed that the SOD level in the observation group was significantly higher than that in the control group, while MDA level was significantly lower than that of the control group.Conclusion: The combination of low-dose aspirin and Salvia miltiorrhiza injection has significant therapeutic effect on gestational hypertension, and can effectively improve the hemorheological parameters and endothelial function of patients and reduce the oxidative stress injury in patients. It is worth further clinical promotion. 展开更多
关键词 DANSHEN injection ASPIRIN Pregnancy-induced hypertension HEMORHEOLOGY vascular ENDOTHELIAL function OXIDATIVE stress
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Effect of Gongliuxiao Capsule on sex hormones, tumor markers, inflammatory factors and vascular endothelial function in patients with uterine fibroids
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作者 Chuan-Fen Qin Xiao-Jun Li Hong-Ling Zhang 《Journal of Hainan Medical University》 2019年第11期61-64,共4页
Objective:To investigate the effects of Gongliuxiao Capsule on inflammatory factors, tumor markers, sex hormones and vascular endothelial function in patients with uterine fibroids. Methods:130 patients with uterine f... Objective:To investigate the effects of Gongliuxiao Capsule on inflammatory factors, tumor markers, sex hormones and vascular endothelial function in patients with uterine fibroids. Methods:130 patients with uterine fibroids admitted to our hospital from October 2015 to March 2017 were enrolled. According to the treatment, they were divided into single treatment group and combined medication group, with 65 cases in each group. The changes of inflammatory factors, tumor markers, sex hormones and vascular endothelial function were compared before and after treatment in the two groups.Results: There were no significant differences in the levels of sex hormones, inflammatory factors, tumor markers and vascular endothelial function between the two groups (P>0.05). The levels of sex hormones E2, P, FSH and LH, the levels of inflammatory factors TNF-α, MMP-9 and IGF-1, tumor markers CA125, CA19-9 and vascular endothelial function VEGF and b-FGF were significantly lower in the two groups (P<0.05). The levels of E2, P, FSH and LH in the combined drug groupswere (154.12±16.20) pmol/L, (9.12±1.02) μg/L, (13.84±1.42) U/L and (12.77±1.36) U/L, respectively,which were significantly lower than the single drug group level (P<0.05). The levels of CA125 and CA19-9 in the combined drug group were (27.89±2.88) U/mL and (28.09±3.04) U/mL, respectively, which were significantly lower than the single drug group (P<0.05). The levels of TNF-α, MMP-9 and IGF-1 in the combined drug group were (24.16±2.63) ng/L, (159.22±16.82) μg/L and (69.75±7.09) μg/L, respectively, which were significantly lower than the single drug group(P<0.05). The levels of VEGF and b-FGF in the combination group were (138.29±14.32) μg/L and (98.59±10.02) μg/L, respectively, which were significantly lower than the single drug group (P<0.05).Conclusion:Mifepristone combined with Gongliuxiao Capsule can alleviate endocrine disorders, relieve inflammatory stress response and improve vascular endothelial function in patients with uterine fibroids. It is worthy of clinical application. 展开更多
关键词 UTERINE FIBROIDS Gongliuxiao CAPSULE Tumor MARKERS vascular ENDOTHELIAL function Inflammatory factors
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