Change of antithrombin Ⅲ in patients with atherosclerotic cerebral in-farction / 中国病理生理杂志

AIM:To explore the change of antithrombin Ⅲ( AT-Ⅲ) in the patients with atherosclerotic cere-bral infarction .METHODS:Chromogenic substrate assay was used to measure the activity of AT-Ⅲ in 55 patients with atherosclerotic cerebral infarction and 55 healthy controls , and the correlation analysis was applied to determine the AT-Ⅲactivity with the severity of damage in central nervous system and general biochemical parameters .The levels of TNF-αand IL-6 in the plasma were detected by ELISA .Immunocomplex in the plasma was measured by enzyme immunoassay (EIA). The number and phenotype of the monocytes in peripheral blood were analyzed by flow cytometry .ELISA was also applied to determine the secretion of TNF-αand IL-6 from the monocytes after the stimulation of immunocomplex .The expression of AT-Ⅲin human brain vascular endothelial cells after the stimulation of TNF-αand IL-6 was observed by Western blotting . RESULTS:The activity of AT-Ⅲsignificantly decreased in the patients with atherosclerotic cerebral infarction , and nega-tively correlated with the damage degree of nervous system function , systolic pressure , diastolic pressure , glucose , choles-terol, triglyceride, low-density lipoprotein cholesterol and homocysteine , while positively correlated with high-density lipo-protein.In addition, the plasma levels of TNF-αand IL-6 increased significantly , accompanied with the enhancement of immunocomplex level .The numbers of CD14 + CD16 + and CD14 + CD32 + monocytes in peripheral blood were not changed , while CD14 +CD64 +monocytes increased obviously .The secretion of TNF-αand IL-6 by monocytes were signifi-cantly enhanced after stimulated with immunocomplex , while the protein expression of AT-Ⅲ in the human brain vascular endothelial cells was down-regulated after co-incubated with TNF-αor IL-6.CONCLUSION:Decreased AT-Ⅲactivity in the patients with atherosclerotic cerebral infarction is one of the risk factors of cerebral infarction , and related with the dis-ease severity .The production of pro-inflammatory cytokines through immunocomplex from CD 14 +CD64 +monocytes may be involved in the mechanism .Improvement of AT-Ⅲactivity may protect against cerebral ischemia .

Producción de suero de Coombs en carneros inmunizados con globulinas humana opsonizadas / Coombs serum production in sheep immunized with human globulin opsonized

Se obtuvo suero antiglobulínico (Coombs) con el empleo de un inóculo consistente en un inmunocomplejo (IC) inmunoglobulina (Ig) humana-antiglobulina humana en carnero, como opsonina para favorecer la respuesta inmune. Se inmunizaron 18 carneros divididos en 3 grupos de 6: el primero y el segundo destinados a producir anti-IgG y anti-C3, respectivamente. Estos, a su vez, subdivididos en subgrupo A: en el que se empleó el método tradicional de obtención de suero de Coombs; y B: en el que se usó el adyuvante completo de Freud en la dosis inicial y el IC en la fase de mantenimiento. Al tercer grupo solo se le administró el IC puro (subgrupo A) y en una dilución 1:200 (subgrupo B). En los carneros de los subgrupos 1B y 2B se obtuvieron títulos más elevados de anti-IgG y anti-C3dg, que en los inmunizados por el método tradicional. La respuesta de anticuerpos en los animales que se inmunizaron con los IC (3A y 3B), fue más rápida y de mayor título que las obtenidas por el método tradicional (1A y 2A) o el método combinado (1B y 2B). La respuesta en el subgrupo 3B fue más prolongada, al parecer por un efecto de dosis

An antiglobulin serum (Coombs) was obtained using a consistent inoculums in a immunocomplex (IC) the human immunoglobulin (Ig)/human antiglobulin in the seep by example, the opsonin to favor the immune response. Eighteen sheeps were immunized divided into three groups of 6 each: The first and second aimed to produce anti-IgG and anti-C3, respectively. In turn, these were divided into the A subgroup: in which we used the traditional method of Coombs's serum obtaining and B group in which we used the Freud's whole adjuvant in initial dose and the IC in the maintaining phase. Third group received the pure IC (A subgroup) and at a dilution of 1:200 (B subgroup). In sheeps from the 1B and 2B subgroups it was possible to obtain higher titration of anti-IgG and anti-C3dg than those immunized by means of the traditional method. The antibody response in animals immunized with the ICs (3A and 3B) was faster and of higher titration than those obtained by traditional method (1A and 2A) or the combined method (1B and 2B). The response in the 3B subgroup was lengthier apparently by a dose effect

Clinicopathologic characteristics, classification and outcome in lupus nephritis patients with thrombotic microangiopathy / 中华肾脏病杂志

Objective To investigate the clinicopathologic characteristics, classification and outcome in lupus nephritis(LN)patients with thrombotic microangiopathy(TMA). Methods LN patients with TMA proven by renal biopsy, from January 2000 to February 2009 in our hospital were enrolled. They were classified as poly-immunocomplex deposit group(n =35)and pauci-immunocomplex deposit group(n=25). Their clinicopathologic features and outcome were analyzed retrospectively. Results(l)The incidence of TMA in lupus nephritis was 9.2%(n=62), which presented severe hypertension, prominently elevated serum creatinine, anemia, thrombocytopenia, and was also the poorest prognosis of all the vascular lesion types. The incidence of death/end stage renal disease(ESRD)was 25.0%, with a mortality rate of 13.6%.(2)According to immunocomplex deposit in renal tissue, LN complicated with TMA could be classified as "poly immunocomplex deposit subtype" and "pauci-immunocomplex deposit subtype". The former presented better response to steroid and immunosuppressant therapy, in spite of more active clinicopathologic manifestations. The incidences of death/ESRD of poly subtype and pauci subtype were 8.8% and 32.0% respectively. Conclusions TMA presenting severe manifestations and the poorest prognosis is not rare in LN. LN with TMA may be classified as poly-immunocomplex deposit subtype and pauci-immunocomplex deposit subtype. This classification may be helpful in prognosis because the latter shows bad response to steroid-immunosuppressant therapy.

DETECTION OF THE IMMUNE COMPLEX IN KIDNEYS OF ANAPHYLACTIC SHOCK ANIMALS / 中国法医学杂志

This paper reports the immunohistochemical changes in kidneys of anaphylactic shock animals byAvidin-biotin-per-oxidase Complex Technique (ABC), Peroxidase - anti - perox idase Complex Technique(PAP)and Lablled Avidin-biotin Technique (LAB). The immediate naphylaxis was always accompanied by The immunocomplex formation in kidney. the immunocomplex adhered to the mesangial cells,the endothelial cells of capillaries and small arteries,and also to the adventitia of blnd vessels. In addition to allegens,such as penicillin and exogenous serum, IgE and IgG were observed in theimmuno-complex. This finding suggested that the IgE in the immunocomplex might be characteristicof type I anaphylaxis and could be distingushed from other kind of immunocomtplexs. Animals keptedat the room temperature (22 - 25℃)for 6 or 12 hours, or in refrigerator (4 ℃ )for 48 hours would notinfluence the positive reactions. This method seems feasible for practical use in the casework of anaphylactic shock.

Autoimmune syndrome induced by chronic mucosal immune response / 中国免疫学杂志

To explore me chanisms of successful induction of autoimmunity by chronic Campylobacter jejuni (CJ-S131 ) infection [3, 4, 5, 6], a chronic mucosal immune response mooe(?) was established by oral immunization of BALB /C mice with formalized CJ-S131 bacteria.in a dosage of 4 xlO8 bacterial cells per mouse, twice a week for 14 weeks, which mimicked the released antigens persistently stimulating the mucosal immune system when mice were chronically infected by C. jejuni. It was also found that the immunized mice demonstrated (?)upus-like autoimmune syndro me, sim ilar, but more severe.to those seen in the mice chronically infected by C. jejuni. It was characterized by (1) significant lymphoproliferation of both mucosal and systemic immune systems; (2) polyclonal activation of B lymphocytes; (3) significantly elevated level of multiple autoanti bodies against ss- DNA, ds- DNA and histones; (4) immunocom plex glomerulonephritisi; (5) chronic inflammation of multiple organs or tissues including the intestine, liver and blood vessels. In the polyclonal activation testin vitro, the levels of total immunoglobulins and autoantibody against DNA in the supernatan ts of the splenic culture cells from the immunized mice were significantly higher than that from the controll mice. The results verified that chronic C. jejuni infection in the gut could induce abnormal. chronic mucosal immune response which led to perturbation of the systemic immune system, resulting autoimmunity or autoimmune syndrom.

OBSERVETION OF INMMUNOLOGICAL CHARACTER IN PATIENTS WITH RHEUMATOID ARTHRITIS / 西安交通大学学报(医学版)

In this paper, we have made comparatively systemic immunological determination on 43 patients with rheumatoid arthritis (RA) in contrast with 53 health persons. The result showed that the lymphocyte transforming percentage and the E rosette forming percentage of RA were obviously lower than that of the healthy ones, The former were 0.50?0.07 and 0.64?0.10. P0.05, and no obvious difference. The level of the total complement(STC)in serum was obviously lower than that in healthy ones, They were 7465?20.83 and 9363?20.76Ku/L respectively, P