A sensitive fluorescent assay for N-acetyltransferase activity in human lymphocytes from newborns and adults.
نویسندگان
چکیده
We have developed a simplified assay for the enzyme N-acetyltransferase, based upon the loss of fluorescence after acetylation of the substrate p-aminobenzoic acid. This method is sufficiently sensitive to permit the quantitation of N-acetyltransferase activity in 10(5) human lymphocytes. Using this method, we have compared the level of N-acetyltransferase activity in lymphocytes from adult peripheral blood and from cord blood samples.
منابع مشابه
An Increased Genotoxic Risk in Lymphocytes from Phototherapy-Treated Hyperbilirubinemic Neonates
Background: Phototherapy is believed to be a safe method for the management of hyperbilirubinemia. However, there are some controversial issues regarding the genotoxic effects of phototherapy on DNA. The aim of this study was to investigate morphologically both phototherapy-induced DNA double-strand breaks (DSBs) and apoptosis in lymphocytes derived from jaundiced and non-jaundiced neonates. Me...
متن کاملCYTOTOXIC ACTIVITY OF THYMUS VULGARIS, ACHILLEA MILLEFOLIUM AND THUJA ORIENTALIS ON DIFFERENT GROWING CELL LINES
The cytotoxic activity of ethanolic extracts of Thymus vulgaris, Thuja orientalis and Achillea millefolium was investigated on various growing tumor cell lines. MTT colorimetric assay was used for measuring the inhibition of cell proliferation. All of the three extracts showed a relatively dose-dependent inhibition of proliferation of human breast cancer (SK-Br-3, MDA-MB-435) and leukemia ...
متن کاملThe Influence of Iron Loading and Iron Chelation on the Proliferation and Telomerase Activity of Human Peripheral Blood Mononuclear Cells
Background: Iron is an essential trace element in cell proliferation. Several investigations demonstrate that iron deprivation inhibits cell proliferation. However, the impact of iron on telomerase activity of activated lymphocytes remains unexplained to date. Objective: In this study, the effect of iron on the proliferation and telomerase activity of lymphocytes stimulated by phytohemagglutini...
متن کاملThe Assessment of NK Cytotoxicity and CD56+/CD16+ Phenotype by Flowcytometry in PBL Isolated from Women with Recurrent Spontaneous Abortion
Background: Human peripheral blood NK cells constitutively express CD56 and CD16 antigens. Peripheral blood NK cells seem to be strongly related with decidual NK cells, and may reflect the decidual NK cell functional status. There are varied reports concerning the relationship between NK cell cytotoxicity in women with recurrent spontaneous abortion. Objective: To study NK activity in women wit...
متن کاملO-11: N-a-acetyltransferase 10 Protein Regulates DNA Methylation and Embryonic Development
Background Genomic imprinting is a heritable and developmentally essential phenomenon by which gene expression occurs in an allele-specific manner1. While the imprinted alleles are primarily silenced by DNA methylation, it remains largely unknown how methylation is targeted to imprinting control region (ICR), also called differentially methylated region (DMR), and maintained. Here we show that ...
متن کاملذخیره 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 ناماگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید
ورودعنوان ژورنال:
- Clinica chimica acta; international journal of clinical chemistry
دوره 96 1-2 شماره
صفحات -
تاریخ انتشار 1979