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Renal transplantation has become a treatment of choice for patients with end stage renal disease. A successful transplant is the result of a combination of several factors acting synergistically, such as the degree of HLA compatibility between donor and the recipient, pretransplant blood transfusions, the recipient''s state of immunoreactivity and sensitization, immunosuppressive therapy given in post operative period etc. Donor selection appears to be the most critical factor for the long term success of the organ graft. In this brief review, some of the important parameters of donor selection in renal transplantation are highlighted.KEY WORDS: Histocompatibility (HLA) matching, Cross match, Sensitization 相似文献
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This study examined the abilities of methimazole, propylthiouracil (PTU) and propranolol to exert an immunosuppressive effect in vitro. Incubation of peripheral blood lymphocytes (PBL) with propranolol showed the drug to have no effect on either B- or T-cell activity. Methimazole or PTU at concentrations of greater than or equal to 10(-5)M resulted in significantly lower amounts of IgG and IgM being released into the culture medium. Both drugs were also found to have a direct effect on T-cell function as they caused the percentage of total and suppressor cells to increase towards normal levels. The three drugs were all found to have some free radical scavenging ability. These ranked PTU greater than methimazole greater than propranolol. These in-vitro findings would suggest that both methimazole and PTU have some direct effect on the immune system. It would seem more likely however that these effects are mediated via interleukin 2 rather than by their ability to act as free radical scavengers. 相似文献
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A total of 86 renal transplant patients who were transplanted with live related donor (LRD) and live unrelated donor (LURD) kidneys were studied for opportunistic infections. Immune diagnosis of Toxoplasma, Cytomegalovirus (CMV), Herpes-simplex virus type II (HSV-2), Aspergillosis and Tuberculosis was carried out in these patients along with sputum examination, CSF studies and biopsy of lymphnode and other tissues in few cases. A high degree of Toxoplasma, CMV & HSV-2 positivity was seen in transplanted patients. However sensitivity of serological diagnosis of tuberculos was found to be low with standard criteria, which increased significantly when modified criteria were used. It is concluded that regular immunological monitoring should be carried out in transplanted patients so as to reach an early diagnosis and management of opportunistic infections.KEY WORDS: Immune diagnosis, Opportunistic infections, Transplantation 相似文献
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As per WHO recommendations, measles vaccine is administered at the age of 9 months which is based on studies demonstrating seroconversion (from positive to negative) at this age. However this contention may not hold good in preterm babies since they may have lower initial levels of passively transferred IgG antimeasles antibodies of maternal origin. To explore this possibility, 50 preterm babies (gestational age less than 37 weeks) were studied for antimeasles antibodies. Serum samples were collected at birth and then at 3 months and 5 months of age in all the cases. Antimeasles antibody assay was done in all the serum samples using ELISA kits. At birth 32% of infants were positive for antimeasles antibodies whereas 60% were weakly positive and 8% were negative. At 3 months of age 50% were sero negative, 2% positive and 40% weakly positive. The sero negativity was found to be 98% at 5 months with only 2% remaining positive. Since seroconversion is seen to occur in this vast majority of preterm infants at the age of 5 months, antimeasles vaccine should be administered at this age to this subset of more vulnerable babies.KEY WORDS: Antimeasles antibodies, Preterm babies, Seroconversion 相似文献
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S. CHOPRA N.J. LEVELL G. COWLEY J.J.H. GILKES 《The British journal of dermatology》1996,134(6):1109-1112
A patient is described with the characteristic- features of phenytoin hypersensitivity syndrome (PHS) including fever, erythroderma, tibial and facial oedema. pinhead-sized facial pustules und abnormal liver function tests. The use of systemic corticosteroids in this condition is not established. We report the resolution of all the features of PHS with systemic corticosteroids and recurrence on withdrawal, and further remission on reinstitution of systemic corticosteroids. 相似文献
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