Measurement of human dopamine-beta-hydroxylase in serum by homologous radioimmunoassay.

نویسندگان

  • R A Rush
  • P E Thomas
  • S Udenfriend
چکیده

Human serum dopamine-beta-hydroxylase [3,4-dihydroxyphenylethylamine, ascorbate: oxygen oxidoreducatse (beta-hydroxylating), EC 1.14.17.1] levels have been determined in 52 samples with a newly devised radioimmunoassay that utilizes purified human enzyme and its specific antiserum. The values obtained were in excellent agreement (correlation coefficient r equals 0.98) with those obtained by measuring enzymatic activity in the same sera. Either assay technique, enzymatic or homologous radioimmunoassay, can be used for measurement of the enzyme in normal human serum.

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

[Experimental and clinical studies on the activity of human serum dopamine-beta-hydroxylase].

Dopamine-(9-Hydroxylase is an enzyme which catalyzes dopamine to noradrenaline in final step of catecohlamine synthesis. This study was undertaken to determine the human serum Dopaminelj3-Hydroxylase activity and examine effects of fusaric acid (5-butylpicolinic acid) on this enzyme activity in vitro and in vivo. A sensitive method for measurement of the human serum Dopamine-8-Hydroxylase activ...

متن کامل

DEVELOPMENT OF A RAPID AND SENSITIVE RADIOIMMUNOASSAY FOR MEASUREMENT OF AFLATOXIN B 1 IN BIOLOGICAL SAMPLES

Aflatoxin B I (AFB) isa well known hepatocarcinogen in several animal species and probably a causative agent in human hepatocellular carcinoma. Humans are exposed to AFB by ingesting contaminated food. Aflatoxin contamination encountered in human foods is usually at low levels which is difficult to measure by chromatographic methods. Therefore in the present study we have developed an immun...

متن کامل

DEVELOPMENT OF A SIMPLE AND SENSITIVE ENZYME- LINKED IMMUNOSORBENT ASSAY (ELISA) FOR CLINICAL MEASUREMENT OF TESTOSTERONE USING PENICILLINASE AS LABEL

An enzyme-linked immunosorbent assay using a homologous combination of antiserum raised against testosterone-3-0-carboxymethyloxime-bovine serum albumin (T-3-0-CMO-BSA ) and penicillinase-labelled T-3-0-CMO was developed. This assay was utilized to measure testosterone in serum samples of male and female subjects. The sensitivity of the assay is 50pg/well and the antibody developed crossrea...

متن کامل

Serum dopamine-beta-hydroxylase activity.

Dopamine-yS-liydroxylase, the enzyme which converts dopamine to norepinephrine, is released into the perfusate upon stimulation of the isolated perfused adrenal gland and after stimulation of the nerves to the isolated perfused spleen. This study was undertaken to determine whether dopamine-/?hydroxylase activity could be detected circulating in blood. By using a sensitive new enzymatic assay, ...

متن کامل

Catecholamine secretory vesicles. Augmented chromogranins and amines in secondary hypertension.

Chromogranins A and B are major soluble proteins in chromaffin granules. Their adrenomedullary content is increased in the spontaneously (genetic) hypertensive rat. Is augmented catecholamine vesicular storage of the chromogranins a specific feature of genetic hypertension? To explore this question, we measured chromogranin A immunoreactivity, using a novel, synthetic peptide radioimmunoassay, ...

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:
  • Proceedings of the National Academy of Sciences of the United States of America

دوره 72 2  شماره 

صفحات  -

تاریخ انتشار 1975