Effects of L-Asparaginase on Lymphocyte Surface and Blastogenesis1

نویسندگان

  • Isaiah J. Fidler
  • Paul C. Montgomery
چکیده

L-Asparaginase is immunosuppressive, inhibiting both the cellular and humoral responses, as well as the concanavalin Aand/or phytohemagglutinin-induced blastogenesis of lymphocytes. However, its mechanism of action is presently unclear. This study dealt with the enzyme effects on the lymphocyte surface leading to interference with the binding of concanavalin A. The mitogen was labeled with ' 25I and added

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Effects of L-asparaginase on lymphocyte surface and blastogenesis.

SUMMARY L-Asparaginase is immunosuppressive, inhibiting both the cellular and humoral responses, as well as the concanavalin A-and/or phytohemagglutinin-induced blastogenesis of lymphocytes. However, its mechanism of action is presently unclear. This study dealt with the enzyme effects on the lymphocyte surface leading to interference with the binding of concanavalin A. The mitogen was labeled ...

متن کامل

Production of L-Asparaginase by Serratia marcescens SB08: Optimization by Response Surface Methodology

This paper describes optimization method that combines the Plackett-Burman design, a factorial design and the response surface method, which were used to optimize the medium for the production of L-asparaginase by Serratia marcescens SB08. Four medium factors, from out of 11 medium factors, were screened by Plackett-Burman design experiments and subsequent optimization process to find out the o...

متن کامل

Modification of surface topography of lymphocytes by L-asparaginase.

i.-Asparaginase is a chemotherapeutic agent that is also immunosuppressive, inhibiting both the cellular and hu moral responses. This study deals with the effects of the enzyme on lymphocyte surface receptors to the mitogen concanavalin A. We previously reported that short incu bation of lymphocytes with L-asparaginase leads to a de creased binding of the mitogen to their surface. We now re por...

متن کامل

Beneficial effects of Pimpinella anisum L. ethanol and aqueous extracts on L-asparaginase-associated hepatotoxicity using specific 99mTc-Phytate biodistribution studies in rats

Introduction: The present study aimed to investigate the protective effects of Pimpinella anisum L. ethanolic and aqueous extracts on L-asparaginase- associated hepatotoxicity in rats using histopathological and specific 99mTc-Phytate biodistribution studies. Materials and Methods: 60 female rats were divided into 9 treatment groups including L-asparaginase group, Aqueous extract (100 and 200 m...

متن کامل

Bioinformatic Analysis of L-Asparaginase II from Citrobacter Freundii 1101, Erwinia Chrysanthemi DSM 4610, E. coli BL21 and Klebsiella Pneumoniae ATCC 10031

Backgroung and Aims: L-Asparaginase II is a cornerstone of treatment protocols for acute lymphoblastic leukemia. Only asparaginase II obtained from E. coli K12 and Erwinia chrysanthemi have been used in human as therapeutic drug. The therapeutic effects of asparaginase II from E. coli K12 and Erwinia chrysanthemi is accompanied by side effects. It is desirable to search for other asparaginase I...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2006