Effects of smoking on metabolism and excretion of vitamin B12.

نویسندگان

  • J C Linnell
  • A D Smith
  • C L Smith
  • J Wilson
  • D M Matthews
چکیده

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

Vitamin B12 supplementation in end stage renal diseases: a sys-tematic review

  Background :Hyperhomocysteinemia is a risk factor for cardiovascular disease particularly in patients with end stage renal disease (ESRD). Vitamin B12 supplementation on its own still remains as a controversial issue for clinicians in decreasing the level of homcysteine in this group of patients.   Methods : Using all randomized controlled trials (RCTs), clinical trials and pre-post-trial stu...

متن کامل

Metabolic interrelationship between vitamin B12 and ascorbic acid in pernicious anemia.

S UBNORMAL PLASMA ascorbic acid concentration and rapid plasma ascorbate clearance have been found in patients with vitamin B12 deficiency despite adequate intake of vitamin C. 2 Cox et al.2 noted in their group of vitamin B12-deficient patients that these abnormalities of ascorbate metabolism were still present 7-14 days following therapy with sufficient vitamin B12 to cause clinical and hemat...

متن کامل

Effects of Vitamin B12 in Neonates and Young Infants

Vitamin B12 (cobalamin) is an essential coenzyme for nucleic acid synthesis. Animal protein is the major dietary source of vitamin B12. Deficiency of vitamin B12 leads to megaloblastic anemia, degeneration of the brain, spinal cord, peripheral nerves, and abnormalities of epithelial tissues. Two factors are necessary for the cure of megaloblastic anemia: one in food (extrinsic factor) and one i...

متن کامل

Reduction of Serum Vitamin B12 Levels among the Female Patients with Breast Cancer (Case Study: Sulaimania city- Iraq)

Background and objectives: Breast carcinoma is one of the most common malignant diseases among women worldwide. In Iraq there are noticeable elevation in incidence rates and prevalence of advanced stages of breast cancer. Cobalamin (vitamin B12) is essential micronutrient involved in one carbon metabolism and DNA methylation, which affects cancer. All of these may be change in breast cancer. Th...

متن کامل

BRIEF REPORT Lack of Effect of L-Methionine Ingestion on 14C02 Excretion from L.Histidine (Imidazole.2.14C) in Folic Acid and Vitamin B12 Deficient Humans

A DIET CONTAINING ONE TO TWO PER CENT L-METHIONINE normalizes increased urinary excretion of formiminoglutamic acid ( FIGLU ) and decreased 14CO2 excretion from L-histidine ( imidazole-2-14C) in folic acid and vitamin B12 deficient rats. 2 If such findings could also be found in man, and if they reflect biochemical effects of methionine on monocarbon fragment metabolism rather than competition ...

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:
  • British medical journal

دوره 2 5599  شماره 

صفحات  -

تاریخ انتشار 1968