2.PREPARATION OF MONOCLONAL ANTIBODIES TO HUMAN TYPE Ⅲ COLLAGEN AND THEIR LOCALIZATION IN NORMAL TISSUES
Acta Anatomica Sinica 1953;0(01):-
Monoclonal antibodies, CAb-15 and CAb-16, were produced by using of spleen cells from Balb/c mice immunized with cell suspension of fresh hepatoma tissues with mouse myeloma Sp 2/0 cells. Western blotting showed that the antigen determinant of CAb-15 was situated on the ?_1 [Ⅲ] polypeptide chains and that of CAb-16 on the triple helical domain. The monoclonal antibodies were also used for immunohistochemical localization by ABC method in formalin-fixed and paraffin-embedded sections of normal tissues from liver, kidney, aorta, skin, cartilage, placenta, stomach, breast and granulation tissues. The results showed that these antibodies are useful in immunohistochemical study for collagen.
3.Role of RIP140 and PGC-1αin angiotensin Ⅱ mediated energy metabolism in cardiomyocytes
Chinese Pharmacological Bulletin 2015;(2):194-197,198
Aim To investigate the role of transcrip-tional cofactors receptor interacting protein 140 ( RIP140 ) and peroxisome proliferator-activated recep-tor γ coactivator-1α ( PGC-1α) in the angiotensin Ⅱ( AngⅡ) mediated energy metabolism regulation in cardiomyocytes. Methods RIP140 or PGC-1α was overexpressed via adenovirus vector system. ATP con-tents were detected by luminescence detection assay system. Real-time PCR and Western blot analysis were used to measure the expressions of RIP140 and PGC-1α genes. Results After treated with 100 nmol·L-1 AngⅡfor 36h in neonatal cardiomyocytes, the content of mitochondrial ATP was reduced notably ( P <0. 01). Accordingly, the mRNA and protein levels for RIP140 were increased. However, the mRNA and pro-tein levels of PGC-1α were downregulated markedly. What’ s more,the reduction of ATP induced by AngⅡwas further aggravated by RIP 1 4 0 overexpression , but ameliorated by overexpressing PGC-1α. Conclusion The reduction of ATP mediated by AngⅡis associated with the upregulation of RIP140 , as well as the down-regulation of PGC-1α.
4.Urgent need to increase current dietary reference intakes of vitamin D
Chinese Journal of Clinical Nutrition 2009;17(3):181-183
level and recommended nutrient intake)in China has been out-of-date.Therefore,it has became an urgent problem for Chinese Nutrition Society to re-evaluate the DRIs of vitamin D and make corresponding modifications.
5.The challenges of forensic expert accepting cross-examination in trial-centered trial mode
Chinese Journal of Forensic Medicine 2017;32(1):1-4
Today, the direction of litigation reformation is changing trial pattern to be trial-centered and making the trial substantialized. Under this background, the relevant provisions have been launched from the supreme people's court and other departments to make sure that the forensic expert will appear in court and accept cross-examination, and this phenomenon should be normalized and substantiated. In order to ensure the expert opinion can be fully and effectively cross-examined, the medico-legal expert should fulfill obligations, such as respect for the court, answer questions honestly and explain expert opinions. We find that some problems show up in this process: the rate of forensic expert appearing in court is low; the legal nature of expert opinion is not clear; the requirements are not clear;the conflict between forensic expert opinion and other forms of expert evidence, including auxiliary expert, is very clearly. Based on this situation, the author give some suggestions to the forensic expert: keep on learning to improve professional skill; improve the legal knowledge; pay attention to practice and strengthen the ability of expression.
6.Advanced research on neoadjuvant therapy with trastuzumab in HER2-positive breast cancer
Jun LIU ; Yanfang YANG ; Lin GU
Chinese Journal of Clinical Oncology 2014;(16):1065-1068
Trastuzumab is a specific inhibitor against human epidermal growth factor receptor-2 (HER-2). Trastuzumab is widely used in the neo-adjuvant treatment of HER-2 breast cancer. Large-scale randomized and controlled clinical trials have demonstrated that pathologic complete response rates (pCRs) were significantly increased with neo-adjuvant trastuzumab therapy plus chemotherapy than with regular chemotherapy. The use of trastuzumab plus chemotherapy with lapatinib supplements could further improve pCR rates. An-thracycline and non-anthracycline drugs could both be used concurrently with trastuzumab. Endocrine therapy could be used as an alter-native for estrogen receptor-positive patients. pCR is a powerful predictor of long-term outcomes in HER-2 positive patients under neo-adjuvant therapy with trastuzumab. However, patient loss of HER-2 expression with residual disease after neo-adjuvant therapy with trastuzumab is a poor prognostic factor. This study paper will provide a review of related research.
7.Clinical investigation and drug resistance of fungal hospital-acquired infection in a certain hoapital
Yanfang ZHANG ; Lei LIU ; Xiufeng ZHENG
International Journal of Laboratory Medicine 2008;29(5):407-408,411
Objective To explore the distribution,fundamental diseases,risk factors and drug-resistance of hospital- acquired infection caused by fungi in Department of Respiratory Medicine.Methods The clinical data of 142 patients were retrospectively reviewed,and then with statistical analysis was performed.Results The main pathogen which caused fungal hospital-acquired infection was Candida albicans. The most three possible fundamental diseases were chronic obstructive pulmonary disease,bronchiectasis and lung cancer. The main risk factors were lower resistibility of patients and invasive diagnostic and therapeutic measure. The fungus resistance was gradually rising.Conclusion The hospital infection caused by fungus should be emphasized in respiratory medicine department. In order to effectively prevent the hospital infection in respiratory medicine department,we should improve the basic conditions of patients,rationally diagnose and treat,and rationally use the drug against fungi.
8.The clinical analysis of 27 cases of polycythemia vera complicating stroke
Yanfang YANG ; Lijun REN ; Ying LIU
Journal of Clinical Neurology 2001;0(05):-
Objective To explore the clinical features and treatment of polycythemia vera(PV)complicating stroke.Methods Clinical data of 27 cases of PV complicating stroke were analysed retrospectively.Results(1)Among all the cases,PV complicating cerebral infarction were 22 cases(81.5%),among the 22 cases,18 cases(66.7%)of multiple cerebral infarction,2 cases(7.4%)of transient ischemic attack,2 cases(7.4%)of cerebral hemorrhage,1 case(3.7%)of subarachnoid hemorrhage(SAH).The patients's clinical manifestation,physical sign,hemogram,marrow characteristic were consistent with that of PV diagnosis criteria.(2)Imageology check show that small infarction focus were common(66.7%).Lobe of brain,basal ganglia,capsula interna were common place of cerebral infarction.The density of hemorrhagic focus was asymmetrical,there was obvious edema around the hemorrhagic focus.(3)Applied vein blood-letting and small dose chemotherapy,8 cases were recovery,18 cases were obviously improved,1 case of stroke was invalid.Conclusion The cerebral infarction are common in PV complicating stroke.Among all the PV complicating stroke cases,multiple cerebral infarction are the most common,cerebral hemorrhage and subarachnoid hemorrhage are few,vein blood-letting and small dose chemotherapy has a good curative effect for the patients.
10.Role and molecular mechanism of transcriptional co-repressor RIP140 in metabolism tissue
Yanfang CHEN ; Peiqing LIU ; Yuhua WANG
Chinese Pharmacological Bulletin 1986;0(06):-
Nuclear receptors(NRs)superfamily signaling plays an important role in regulating the expression of gene involved inenergy homeostasis.The nuclear receptors regulate target gene expression through the recruitment of coregulatory proteins,which act as scaffolds or plateforms for linking NRs with enzyme complexes that modify DNA and histones.As a transcriptional co-repressor for NRs,RIP140 negatively regulates the transcription of target gene in metabolic tissue,such as adipose tissue,muscle and liver.In the absence of RIP140,genes expressions involved in metabolic pathways were upregulated including glycolysis,triglyceride synthesis,TCA cycle,fatty acid ? oxidation,mitochondrial electron transport and oxidative phosphorylation.RIP140 may be a candidate therapeutic target for metabolism syndromes.