2.Relationship between mitochondrial dysfunction, oxidative stress and diabetic retinopathy
Song, YUE ; Yue-Dong, HU ; Xin-He, WANG ; Lei, CHEN
International Eye Science 2014;(12):2176-2178
As one of the serious complications of diabetes, diabetic retinopathy( DR) has become a main eye disease which causes blindness. The occurrence and development of DR is related to many factors. The pathogenesis is complicated, and the mechanism has not been clear. Early data suggest that the occurrence and development of DR has relations with many factors such as blood sugar level, diabetes duration and the environment. Among the factors, mitochondrial dysfunction and oxidative stress is the important mechanisms of DR and has become research focus in recent years. Consequences of mitochondrial dysfunction within cells include elevation of the rate of reactive oxygen species( ROS) production due to damage of electron transport chain proteins, mitochondrial DNA ( mtDNA ) damage, and loss of metabolic capacity. Clear understanding on the mechanism of mitochondrial functional change under high sugar level and oxidative stress response in the occurrence and development of DR is of great significance on prevention and cure of DR. ln this article, the development of mitochondrial metabolism and oxidative stress of DR is reviewed.
3.A further discussion on acupuncture treatment plan of facial neuritis in Evidence-based Guidelines of Clinical Practice in Acupuncture and Moxibustion.
Chinese Acupuncture & Moxibustion 2014;34(6):602-604
The treatment plan of facial neuritis in Evidence-based Guidelines of Clinical Practice in Acupuncture and Moxibustion (2011 edition) is discussed, and case information of facial neuritis during the recent five years in department of acupuncture and moxibustion, PLA General Hospital, is retrospectively analyzed. In accordance with anatomy of the facial nerve to form the acupuncture prescription, the detailed diagnosis and treatment method for facial neuritis are introduced. The advantages of the diagnosis and treatment method for facial neuritis are summarized, hoping to establish a more comprehensive, standardized and unified treatment plan.
Acupuncture Points
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Acupuncture Therapy
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standards
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Evidence-Based Medicine
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standards
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Facial Nerve
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anatomy & histology
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Facial Nerve Diseases
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therapy
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Humans
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Moxibustion
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standards
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Practice Guidelines as Topic
4.The expression of major histocompatibility complex in idiopathic inflammatory myopathies and its clinical application
Xin LU ; Yao XIE ; Guochun WANG ; Tailin WANG ; Yue WANG
Chinese Journal of Rheumatology 2008;12(6):365-369,插1
Objective To study the expression of major histocompatibility complex(MHC)on muscle biopsy specimens of idiopathic inflammatory myopathies(IIM),and assess diagnostic value of MHC in IIM. Methods Forty-five patients with IIM(19 polymyositis and 26 dermatomyositis)were selected for this study.Thirty healthy subjects were included as controls.Immunohistochemical staining was applied to identify the expression of HLA-A/B/C and HLA-DR on muscle biopsy-specimens in polymyositis (PM)/deFmatomyosiris (DM) patients and healthy controls.Results HIA-A/B/C antigens were expressed in muscle fibers in 18 out of 19 PM patients(95%),24 out of 26 DM patients(92%) and 3 out 0f 30 healthy controls(10%) respectively.The positive expression rate of HLA-DR in PM,DM patients and healthy controls were 84%, 81%,13%,respectively.The expressions of HLA-A/B/C and HLA-DR were significantly increased in PM and DM patients than those in healthy controls(both P<0.05),but no significant differences were found between PM and DM groups(both P>0.05).No significant correlations were demonstrated between the over-expression of HLA-A/B/C or HLA-DR and the extent of inflammatory infiltrations,muscle damage or clinical features in PM/DM groups (all P values>0.05).Conclusion MHC-Ⅰ and MHC-Ⅱover-expression in muscle fibers are the early events in PM and DM,and may occur in the absence of lymphocyte infihration and muscle damage.Immunostaining for MHC-Ⅰ and MHC-Ⅱcan be used as a routine test in the diagnosis of PM and DM.
5.Effects of combined irbesartan/hydrochlorothiazide on morning blood pressure surge and left ventricular mass in essential hypertension
Wenwei YUE ; Xin WANG ; Liqin WANG ; Lianhua BI ; Ruyi JIA
Chinese Journal of Postgraduates of Medicine 2009;32(19):25-27
Objective To investigate the influence of combined irbesartan/hydrochlomthiazide on morning blood pressure surge(MBPS)and left ventricular mass(LVM) in essential hypertension.Methods After 4-8 weeks' run-in period,if blood pressure wagn't up to the standard,the 120 patients were given irbesartan/hydrochlorothiazide once daily from 150 mg/12.5 mg for 12 months to 300 mg/25mg for another 12 months.MBPS was conducted by arnbuhry blood pressure monitoring(ABPM)and LVM was determined by echocardiography at the end of placebo baseline and 12 months later.Results (1)After treatment the patients with MBPS(+)decreased and patients with MBPS(-) increased.(2)After treatment the extents of MBPS were reduced in MBPS(+)patients[systolic blood pressure(SBP)difference(16.1±1.8)mm Hg(1mm Hg=0.133 kPa)vs(29.4±2.8)mm Hg,diastolic blood pressure(DBP)difference(10.2±2.3)mm Hg vs(21.2±2.2)mm Hg,P<0.01]with little change in MBPS(-)patients[SBP difference(11.2±2.4)mm Hg vs(10.1±1.2)mm Hg,DBP difference(5.9±1.9)mm Hg vs(6.8±3.2)mm Hg]compared with before treatment.(3)LVM indexes of all patients were significantly reduced.Conclusion Irbesartan/hydrochlorothiazide can effectively attenuate the extent of MBPS, and has advantages on reversing left ventricular hypertrophy.
6.Study of high-risk corneal transplantation rejection and the expression of VEGF-C/D
Qi-Ming, WANG ; Xin-Yue, ZHAO ; Zhi, WANG
International Eye Science 2016;16(10):1812-1815
AIM:To investigate the expression and the significance of VEGF-C/D in rat cornea after alkali burning as well as the role of lymphangiogenesis in the high-risk corneal transplantation rejection.
●METHODS:The model of alkali burn corneal was made. Different times corneas were taken to electron microscope for vascularization, and examined the expression of VEGF-C/D and VEGFR-3 in l, 3, 5, 7, 14, 28d. The other rat cornea after alkali burn were divided into four parts to penetrate keratoplasty, containing only blood vessels in the cornea ( group A ) , angiogenesis and lymphangiogenesis ( group B ) , lymphangiogenesis degenerating period ( group C ) , angiogenesis degenerating period ( group D ) . ln addition, there are also normal groups ( group N ) to compare the Rl values and survival time of corneal graft.
●RESULTS: Electron microscopy showed that, when the first 7d rat cornea appeared neovascularization after alkali burn, but not lymphangiogenesis. The occurrence of new blood vessels and lymphatic in 2wk. There were no obvious lymphangiogenesis in 5wk and the angiogenesis gradually subside in 8 wk. The expression of VEGF-C/D and VEGFR-3 in the corneas of rats were up-regulated in the third days after the injury, and reached its peaks at 5d. The average survival time of group N, A, B, C, D were (14.25±0.62)d, (9.35±1.02)d, (5.06±1.13)d, (8.71±0.83) d, (9. 44±1. 05)d after transplant cornea. Compared to the rest of the group, group B plant average survival time significantly shortened (P<0. 05), while compared with group B, the survival time of A, C, D groups were significantly longer (P<0. 05).
● CONCLUSION: VEGF - C/D and VEGFR - 3 are expressed significantly after corneal alkali burn. New lymphatic vessels can accelerate high - risk corneal transplantation immune rejection.
7.The Initial Exploration of Innovating the Students Work in Medical Independent College
Xin JIN ; Yan LI ; Lanying WANG ; Yao YUE ; Tao WANG
Chinese Journal of Medical Education Research 2003;0(02):-
The article gives a brief analysis of student characteristics of medical independent college and the aim and purpose of medical education to propose the corresponding measures to improve the students work of independent college.
8.Effects of ginkgolide B on neuronal discharges in rat hippocampal CA1 area
Yue LIN ; Ru WANG ; Xin WANG ; Ruirong HE ; Yuming WU ;
Chinese Journal of Neuroanatomy 2009;25(1):68-73
Extracellular single-unit discharge recording technique was used to examine the effects of Ginkgolide B (BN52021) on the discharges of neurons in CAI area of hippocampal slices and to elucidate the mechanisms involved.The results showed that:(1) In response to the application of ginkgolide B (0.1,1,10 βμmol/L; n =43) into the perfusate for 2 rain,the spontaneous discharge rates (SDR) of 42/43 (97.67%) neurons were significantly decreased in a dose-dependent manner; (2) Pretreatment with L-glutamate (L-Glu,0.2mmol/L) led to a marked increase in the SDR of all 10 (100%) neurons in an epileptiform pattern.The increased discharges were suppressed significantly after ginkgolide B (1 μmol/L) was applied into the perfusate for 2 rain; (3) In 8 neurons,perfusion of the selective L-type calcium channel agonist,Bay K 8644 (0.1 μmol/L),induced a significant increase in the discharge rate of 8/8 (100%) neurons.Ginkgolide B (1 μmoL/L) applied into the perfusate inhibited the discharges of 7/8 (87.5%) slices; (4) In 8 neurons,the broad potassium channels blocker,tetraethylammonium (TEA,1 mmol/L) completely blocked the inhibitory effect of ginkgolide B (1 μmol/L).These results suggest that ginkgolide B can inhibit the electrical activity of CAI neurons.The inhibitory effect may be related to the blockade of L-type voltage-activated calcium channel and may be concerned with delayed rectifier potassium channel (KDR),which indicated that ginkgolide B play a protective role on the central neurons.
9.Clinical and imaging analysis of corpus callosum infarction
Xinhui LI ; Yujie WANG ; Xuan BAI ; Yue XIN
International Journal of Cerebrovascular Diseases 2011;19(3):209-213
Objective To investigate the clinical and imaging characteristics in patients with corpus callosum infarction.Methods The clinical data of 416 patients meetingthe diagnosis of cerebral infarction Were collected,in which,8 patients Were confirmed as corpus callosum infarction by MRI.Results Corpus callosum infarction accounted for 1.9% of all patients with cerebral infarction.CT scan did not show the corpus callosum infaretiom in 7 patients.The nonenhanced MRI revealed the lesions.The enhanced MRI revealed the lesion in another patient.The infarction foci were not only involved in the corpus callosum(knee,body or splenium),but also cornplicated with frontal lobe,occipital lobe and thalamus infractions.The clinical manifesta tions of the corpus callosum infarction were different due to the specific lesion sites.The simple infarction in the body of the corpus callosum mainly presented as contralateral paraparesis.atria,and left limb apra.xia;the infarction in the knee of the corpus callosum mainly presented as lower limb paralysis or contralateral paraparesis;the infarction in the splenium of the corpus callosum presented as limb paralysis and dizziness;the lacunar infarct in the corpus callosum had no obvious clinical manifestations.The patients who complicated with frontal lobe and thalamus infarction had behavioral and psychological syrnptonm,including mental retardation,language abnormalities.and incontinence.Conelusions Corpus callosum infarction is not common.MRI is the basis of diagaosis.The clinical manifestation is lack of specificity.and it is agsociated with the location of corpus callosum infarction and whether it comolicates with the infarction on other part.
10.A natural pancreatic 3D bioscaffold platform for in vitro study on exocrine pancreas
Xin WANG ; Zhao LI ; Yueguang LI ; Kun ZHANG ; Yue DU
Chinese Journal of Hepatobiliary Surgery 2017;23(5):332-335
Objective To evaluate the biochemical function of rat nature three-dimensional acellular pancreatic bioscaffold (3D-APB) in promoting cell proliferation and differentiation in vitro.Methods The fresh pancreas from 10 rats were perfused to prepare 3D-APB.The biocompatibility of 3D-APB was eva luated.The experiment was divided into 4 groups based on 4 kinds of three-dimensional media for AR42J culture,including blank control group,ECM group,PLGA group and 3D-APB group.We compared the proliferation and differentiation of AR42J pancreatic acinar cell at 3 days,5 days,7 days and 10 days after seeding among 4 groups.Results The 3D-APB could represent a biocompatible scaffold capable of integrating within host tissue.The proliferation rate of AR42J cells by MTT in 3D-APB was higher,while the apoptosis rate by flow cytometry was lower than those in other 3 media,which were all significantly different (P < 0.05),respectively.The protein expression of PDX-1 and PTF-1 by western blot in 3D-APB group was greatly higher than those in other 3 groups (both P < 0.05).The mRNA expression of PDX-1 and PTF-1 through qRT-PCR was significantly higher than those in other 3 groups (both P < 0.05).Conclusion Compared with the commonly used chemical and natural scaffold at present,3D-APB could promote cell proliferation and differentiation,which was more appropriate for regenerative medicine.