Contrasuppressor T cells (TCS) take part in immunoreglation by rendering T help cells re-sistant to the effects of suppressor cells.It was found that both human and mouse TCS expressreceptor for vicia villola letcin (VVR).Human effective TCS are mainly CD8VV~+ T subsetswhich are closely associated with abnormalities of immune activity of many diseases.By usingroutine and double immunofluorescent labelling techniques combined with flow cytometry,dif-ferentVV~+ subsets were analysed.A significant increase was observed for CD8VV~+ cells in ac-tive SLE (23.6%)as compared with the control group (8.5%) and the SLE patients in remis-sion (14.49%).The percentage of CD4VV~+ subset,however,was unchanged.Moreover,thetypical contrasuppressive activities exerted by VV~+ cells,which were also increased significantlyin active SLE patients,were detected in SLE in a dose—dependent manner.In an experimentwith PPD—induced lymphoproliferation as indicating system,for example,the relative respons-es were observed to be increased doses in from 100% to 485% and 625% after the VV~+ cellswere added back in increased doses,suggesting that the contrasuppressive VV~+ or CD8VV~+cells were added back in increased doses,suggesting that the contrasuppressive VV~+ or CD_8VV~+cells Were closely related to the immune disorders of SLE.

In the article of Great Medical Sincerity,Sun Simiao's discussion of the medical ethics and medical skill reflected the characteristics of his virtue ethics—the integration of internal training and external training.Internal training makes the request for the quality of doctor from the internal subjective mind.External training is specification for external behavior of internal culture.The effective integration of these two aspects reflects Sun Simiao's positive life value which unifies individual life and social life.

Objective: To explore therapeutic effect of tolvaptan on chronic heart failure (CHF).Methods: A total of 102 CHF patients hospitalized in our hospital from Jun 2015 to Jun 2016 were selected.According to random number table, patients were divided into furosemide control group (n=52, received furosemide based on routine treatment) and tolvaptan group (n=50, received tolvaptan based on routine treatment).Cardiac output (CO), cardiac index (CI), stroke volume (SV), systemic vascular resistance (SVR) and therapeutic effect were observed and compared between two groups before and after treatment.Results: Compared with before treatment, there were significant rise in CO, CI and SV, and significant reduction in SVR in both groups after treatment, P<0.01 all;compared with furosemide control group after treatment, there were significant rise in CO [(4.41±0.71) L/min vs.(4.80±0.77) L/min], CI [(3.21±0.52) L·min-1·m-2 vs.(3.62±0.78) L·min-1·m-2] and SV [(70.09±14.90)ml vs.(79.60±13.10)ml], and significant reduction in SVR [(3111.30±931.85) dyne·s/cm5 vs.(2756.68±856.32) dyne·s/cm5] in tolvaptan group, P<0.05 or <0.01.Total effective rate of tolvaptan group was significantly higher than that of routine treatment (100.0% vs.75.0%), P=0.001.Conclusion: Tolvaptan can significantly improve heart function in patients with chronic heart failure,its therapeutic effect is significant, so it's worth extending.

Objective To understand the work tasks of rural doctors in our country and to provide bases for the reforms of clini‐cal medical education of junior colleges .Methods A self‐made questionnaire was performed in 1 245 rural doctors from 86 rural grassroots health institutions in 7 provinces/municipalies of our country .Results The academic levels of rural doctors were low (65 .54% )and the rates of their medical certification holding were low in western district(7 .79% ) .The work load including basic medical care and basic public health services they committed were approximately matching .The top 5 items of basic medical care were ,in proper sequence ,diagnoses and treatments of common diseases ,common symptoms ,chronic disease management ,communi‐ty rehabilitation ,community first aid .The top 5 items of basic public health services were establishment of residents′health files , maternal and child health ,health care of the aged ,immunization ,health education .Conclusion The technological levels of diagnosis and treatment and theoretical knowledge of rural doctors should be further improved .The clinical medical education of junior medi‐cal colleges must strengthen the training and cultivation of the students′abilities of basic public health services ,besides consolida‐ting the training of the abilities of practical diagnosis and treatment .

Rheumatoid arthritis (RA) is an autoimmune disease characterized by the accumulation and proliferation of inflammatory cells in the synovial (joint) lining.By investigating RA pathologic processes and also through experimental models where immune complexes (inflammatory sediments) play a fundamental role.Many other autoantibodies have then come to our knowledge to be associated with the disease.Though it remains unknown the autoimmune pathology of B cells and why the clones of autoreactive B cells survive and proliferate in RA patients,but no doubt these autoantibodies represent a very useful tool in both diagnostic and prognostic terms.In joint synovial fulid,B cells also secrete cytokines,which can be interacted with other cells.B cells express IL-13 receptor a1 (IL-13Ra1),IL-13 can induce CD23 expression on B cells and promote proliferation of naive B cells. In addition,IL-13 is a cytokine which is produced mainly by activated T helper cell 2 (Th2 cells),it can inhibit the production of pro-inflammatory factor and chemokines,and has a certain relationship with the differentiation of B cells. Therefore,it is necessary to summarize the mechanims of RA pathogenesis related with B cells and IL-13,which has great significance in the diagnosis,treatment and basic immunology research of autoimmune diseases such as RA.

Objective To investigate the influences of blast wave overpressure created by explosion on rat's blood-brain barrier (BBB),and to provide an experimental evidence for further elucidating the mechanism of craniocerebral blast injury,to help direct the clini- cal therapeutic strategy.Methods Twenty male Sprague-Dawley rats were randomly divided into four groups:15min,12h and 24h post- explosion groups and normal control group with five rats for each group.Rats were injured with blast wave produced by explosion.Evan 's blue(EB)was intravenously injected into the injured rats,and the overpressure-induced leakage of BBB was examined under the fluores- cence microscope and by quantitative observation with opacimeter.Results Extensive impairment of BBB could be seen all over the brain 15 min after the overpressure explosion,and bright red EB fluorescent patches appeared as a method distributing along the capillary vessels. These patches were more distinct near the cerebral cortex,and with the lapse of time,their number decreased gradually from the inner to the outer areas.The changes in EB contents in brain tissue matched with that of the BBB.The EB contents in brain tissues in 15min group were(330.4?53.6)?g/g,and it was much higher compared with that of other groups(P

Purpose:To improve the knowledge of primary extragonadal seminoma.Methods:Five cases proved by histopathology were reported in this article, every patient received surgical operation plus subsequent chemotherapy or radiotherapy . Results:all of them are alive now. the histogenesis, clinical features, principle of treatment of primary extragonadal seminoma are discussed with review of literature.Conclusions:Primary extragonadal seminoma is rare, histopathology is very important for diagnosis and selection of therapy.

Objective To study the diagnosis and trea tm ent of multiple endocrine neoplasia type 2b. Methods On e case of MEN2b was reported.The clinical features,the diagnosis and treatment o f MEN2b were reviewed and presented. Results The diagno sis was established on B-ultrasonography and CT scanning,and the patient was cu red by operation. Conclusions MEN2b has been rare.Endoc rine check up,imaging procedures,family investigation and DNA analysis are very important to early diagnosis.Surgical removal of the tumors is effective.

Objective To learn the professional ability of rural doctors in our country ,to provide scientific reference for educa-tional reform of junior-college clinical medicine .Methods A self-made questionnaire was performed in 1 245 rural doctors from 86 rural grassroots health institutions in 7 provinces(municipalities) of our country .Results The rural doctors were familiar with working environment ,coordinated and communicated well with colleagues ,basic competence at work .But their clinical diagnosis-treatment technology and operational capability of medical equipments were not strong .The doctor-patient relationship was not so good .Conclusion Not the proper use of medical equipment and treatment technology of weak seriously affected the quality of serv-ice .Not ideal doctor-patient relationship influenced the service effect .It was suggested that college of clinical medical professional education should enhance the cultivation of students′clinical diagnosis technology ,basic operational skills and communication skills between doctors and patients .

OBJECTIVE:To study the vasodilatation effects of the alcohol extract from Uighur medicine Ziziphora clinopodioi-des(EEZ)on isolated rat thoracic aorta vessel rings. METHODS:Isolated rat thoracic aorta vessel rings were prepared. There was a group with intact vessel ring endothelium and a group with vessel ring endothelium removed in the test. After preshrinking the ves-sel rings with phenylephrine(PE),EEZ of 100,300,500,700,900 and 1 100 mg/L was added gradually,concentration-vasodila-tation curve was drawn and maximal vasodilatation rate (Emax) and median effective concentration (EC50) were calculated. For the group with vessel ring endothelium removed,after the vessel ring was pretreated with EEZ at EC50 in calcium-free solution or calci-um-free high-potassium solution,CaCl2 of 0.4,0.8,1.2,1.6,2.0 and 2.4 mmol/L was added gradually,and calcium concentra-tion-tension curve was drawn;following the pretreatment of the vessel ring with EEZ at EC50,1 μmol/L PE was added and shrink tension was recorded and vasoconstriction percentages was calculated. RESULTS:EEZ had vasodilatation effect on the vessel ring preshrunk with PE in a concentration and smooth muscle-dependent manner. The group with intact vessel ring endothelium and the group with vessel ring endothelium removed respectively had Emax of (58.18 ± 16.23)% and (73.54 ± 17.21)%,and EEZ EC50 of 773.27 mg/L. For calcium-free high-potassium solution,EEZ could cause the calcium ion-vasoconstriction curve to move to the right obviously;for calcium-free solution,EEZ could inhibit the vasoconstriction caused by PE. CONCLUSIONS:EEZ has vasodi-latation effects by a mechanism which may be related to inhibiting calcium influx and intracytoplasmic calcium release through the inhibition of voltage-dependent calcium channels(VDCCs),and thus interfering intracytoplasmic calcium ion balance.