Serum levels of vitamin B12 in cobalamin deficient subjects with or without diabetes mellitus

2018 ◽  
Author(s):  
Duygu Nurdan Avci ◽  
Canan Ersoy ◽  
Soner Cander ◽  
Ozen Oz Gul ◽  
Pinar Sisman ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Vitamin B12 ◽  
Serum Levels

scholarly journals Metformin and Vitamin B12 Deficiency: Where Do We Stand?

2016 ◽  
Vol 19 (3) ◽  
pp. 382 ◽  
Author(s):  
Marwan Awad Ahmed
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Type 2 Diabetes Mellitus ◽  
Vitamin B12 ◽  
Vitamin B12 Deficiency ◽  
Serum Levels ◽  
Cellular Functions ◽  
B12 Deficiency ◽  
Diagnostic Approaches

The association between metformin use and low vitamin B12 levels in type 2 diabetes mellitus patients is well-established. However, many aspects of the topic remain to be elucidated. There is still controversy on the current diagnostic approaches to vitamin B12 deficiency. It is now believed that measuring the serum levels of the vitamin may not reflect its metabolic status. Moreover, there were conflicting results from studies attempting to quantify and explore metformin-associated vitamin B12 deficiency and its clinical impacts. This article reviews the cellular functions of vitamin B12, the biomarkers utilized to define the vitamin deficiency and metformin-induced vitamin B12 deficiency with an emphasis on its prevalence and clinical impacts. This article is open to POST-PUBLICATION REVIEW. Registered readers (see “For Readers”) may comment by clicking on ABSTRACT on the issue’s contents page.

scholarly journals An Investigation on Vitamin B12 Serum Levels among Type 2 Diabetic Patients Treated with Metformin Compared to Normal Levels

2020 ◽  
pp. 1-9
Author(s):  
Hosein Samadanifard ◽  
Delaram Eskandari ◽  
Niloofar Khodabandehloo ◽  
Mehrnaz Ghavamipour ◽  
Nonasadat Ariashokooh ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Serum Level ◽  
Vitamin B12 ◽  
Vitamin B12 Deficiency ◽  
Serum Levels ◽  
Diabetic Patients ◽  
Type 2 Diabetic Patients ◽  
B12 Deficiency ◽  
Type 2 Diabetic

Background: Given the increasing prevalence of type 2 diabetes in the community and the use of metformin as one of its most common therapies as well as presence of some evidences on a link between the use of this medicine and vitamin B12 levels, we decided to measure and compare serum level of vitamin B12 among the diabetic patients under treatment by metformin and compare with its natural content. Decreased Vitamin B12 levels leads to some clinical problems including anemia, gastrointestinal disorders (diarrhea, constipation, decreased appetite, etc.,), neurological disorders (tingle, numbness, muscle weakness, etc.,) and mental disorders (memory impairment, depression, behavioral problems, etc.,). Therefore, we would determine if the duration of metformin use and dosage may be effective on serum levels of vitamin B12 among metformin-treated diabetic patients. Methods: Serum vitamin B12 level in metformin-treated type 2 diabetic patients referred to Rasoul-e-Akram Hospital and Specialist Clinic of Taban in Tehran in 2016 (306 subjects selected by convenience sampling) was determined and then compared to its normal level. Results: Of the 306 participants in the study, 120 ones were females (39.2%) and 186 ones were males (60.8%). Also, 150 ones (49%) were healthy and 156 ones (51%) were suffering from diabetes Miletus. There was a significant difference between the type 2 diabetes mellitus and healthy individuals with quantitative variables such as age, height, weight, BMI, serum cholesterol (Chol) level, LDL serum level, HDL serum level, triglyceride (TG) level. The mean blood level of Vitamin B12 level was 448.92±156.75pg/mL among all participants. A Vitamin B12 deficiency frequency of above 6% was seen among diabetic patients. In regression analysis, a model was defined based on which age, gender, diabetes and Metformin used had a significant effect on serum levels of vitamin B-12. Also, none of the variables gender, age, duration of treatment, metformin quantity, weight and BMI was associated with a deficiency of vitamin B12. Conclusion: In the diabetic group, the prevalence of Vitamin B12 deficiency was more than6%. It was also seen that age, gender, diabetes mellitus, metformin intake and metformin content had a significant effect on serum B12 levels. Therefore, measurement of serum levels of vitamin B12 in metformin-treated subjects is recommended.

Vitamin D Supplementation and Serum Levels of Magne-sium and Selenium in Type 2 Diabetes Mellitus Patients: Gender Dimorphic Changes

2014 ◽  
Vol 84 (1-2) ◽  
pp. 27-34 ◽  
Author(s):  
Nasser M. Al-Daghri ◽  
Khalid M. Alkharfy ◽  
Nasiruddin Khan ◽  
Hanan A. Alfawaz ◽  
Abdulrahman S. Al-Ajlan ◽  
...  
Keyword(s):  
Diabetes Mellitus ◽  
Type 2 Diabetes ◽  
Vitamin D ◽  
Type 2 Diabetes Mellitus ◽  
Serum Levels ◽  
Vitamin D Supplementation ◽  
Serum Selenium ◽  
Dependent Manner

The aim of our study was to evaluate the effects of vitamin D supplementation on circulating levels of magnesium and selenium in patients with type 2 diabetes mellitus (T2DM). A total of 126 adult Saudi patients (55 men and 71 women, mean age 53.6 ± 10.7 years) with controlled T2DM were randomly recruited for the study. All subjects were given vitamin D3 tablets (2000 IU/day) for six months. Follow-up mean concentrations of serum 25-hydroxyvitamin D [25-(OH) vitamin D] significantly increased in both men (34.1 ± 12.4 to 57.8 ± 17.0 nmol/L) and women (35.7 ± 13.5 to 60.1 ± 18.5 nmol/L, p < 0.001), while levels of parathyroid hormone (PTH) decreased significantly in both men (1.6 ± 0.17 to 0.96 ± 0.10 pmol/L, p = 0.003) and women (1.6 ± 0.17 to 1.0 ± 0.14 pmol/L, p = 0.02). In addition, there was a significant increase in serum levels of selenium and magnesium in men and women (p-values < 0.001 and 0.04, respectively) after follow-up. In women, a significant correlation was observed between delta change (variables at six months-variable at baseline) of serum magnesium versus high-density lipoprotein (HDL)-cholesterol (r = 0.36, p = 0.006) and fasting glucose (r = - 0.33, p = 0.01). In men, there was a significant correlation between serum selenium and triglycerides (r = 0.32, p = 0.04). Vitamin D supplementation improves serum concentrations of magnesium and selenium in a gender-dependent manner, which in turn could affect several cardiometabolic parameters such as glucose and lipids.

Assessment of serum levels of vitamin B12 in full term neonates with indirect hyperbilirubinemia

2019 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Gamal Mohamed ◽  
Reem Abdel-Salam ◽  
Rabie Mortada
Keyword(s):  
Vitamin B12 ◽  
Serum Levels ◽  
Full Term ◽  
Term Neonates

Serum levels of folic acid, vitamin B12, and iron in anemia of pregnancy

1966 ◽  
Vol 96 (3) ◽  
pp. 310-315 ◽  
Author(s):  
Fred Benjamin ◽  
Frank A. Bassen ◽  
Leo M. Meyer
Keyword(s):  
Folic Acid ◽  
Vitamin B12 ◽  
Serum Levels

scholarly journals The prevalence of low serum levels of Vitamin D, Vitamin B12, folate and ferritin in adolescents: Single center experience

2021 ◽  
Vol 104 (2) ◽  
pp. 003685042110076
Author(s):  
Nazmi Mutlu Karakaş
Keyword(s):  
Vitamin D ◽  
Vitamin B12 ◽  
Medical Records ◽  
Vitamin B12 Deficiency ◽  
Serum Levels ◽  
Folate Deficiency ◽  
Well Child Care ◽  
Single Center Experience ◽  
B12 Deficiency ◽  
Prevalence Of Anemia

Background: In this study, the aim was to evaluate the prevalence of vitamin D, vitamin B12, ferritin, and folate deficiencies in adolescence to clarify the need for early diagnosis and therapy. Methods: The medical records of adolescents between 10 and 18 years of age between 01 September 2018 and 28 February 2019 as healthy with non-specific complaints, or due to well-child care visits, were analyzed retrospectively. Results: A total of 1847/2507 (73.6%) adolescents were included in the study. The prevalence of vitamin D deficiency was 25.7% (n: 178/691). Vitamin B12 deficiency prevalence was 69.2% (n: 753/1088). The prevalence of anemia and ferritin deficiency was 4.8% and 13.26%. The prevalence of folate deficiency was 37.9% (n: 413/1088). VDD prevalence was statistically significantly higher in females than males (F/M:116/62). VB12D prevalence, the number and mean age of females with hemoglobin deficiency, and low ferritin levels was found to be statistically significantly higher in females than males. Conclusions: The prevalence of vitamin D, vitamin B12, folate deficiency and low ferritin levels was found to be high among adolescents. In particular, adolescents admitting with non-specific complaints and for control purposes in big cities must be considered to be at risk for the deficiency of these vitamins and low level of ferritin.

scholarly journals Evaluation of the Relationship Between Serum levels of Zinc, Vitamin B12, Vitamin D and Clinical outcomes in Patients with COVID‐19

2021 ◽  
Author(s):  
Habibesadat Shakeri ◽  
Amir Azimian ◽  
Hamed Ghasemzadeh‐Moghaddam ◽  
Mohammadreza Safdari ◽  
Mehdi Haresabadi ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin B12 ◽  
Clinical Outcomes ◽  
Serum Levels ◽  
The Relationship

scholarly journals Increased vitamin D binding protein levels are associated with irritable bowel syndrome

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Elif Börekci ◽  
Mahmut Kılıç ◽  
Zeynep Ozan ◽  
Hasan Börekci ◽  
Tekin Yıldırım ◽  
...  
Keyword(s):  
Vitamin D ◽  
Logistic Regression ◽  
Irritable Bowel Syndrome ◽  
Regression Analysis ◽  
Vitamin B12 ◽  
Logistic Regression Analysis ◽  
Binding Protein ◽  
Serum Levels ◽  
Vitamin D Binding Protein ◽  
Irritable Bowel

Abstract Objectives There is no reliable and valid biomarker to identify Irritable bowel syndrome (IBS) and its subtypes. The aim of this study is to explore potential serum biomarkers that may be associated with IBS subtypes, particularly in the vitamin D pathway. Methods The study population comprised 75 IBS patients and 79 controls. Patients divided into IBS subtypes. Routine biochemical parameters, 25-OH-vitamin D, vitamin D binding protein (VDBP) and vitamin D receptor (VDR) serum levels were compared between IBS subtypes and controls. Factors related to IBS subtypes were examined by multivariate logistic regression analysis. Results Vitamin D levels were lower; VDBP and VDR were higher in all IBS patients than in controls (p<0.001; 0.047 and 0.029, respectively). According to logistic regression analysis, VDBP was a disease-related parameter as much as vitamin D in all IBS subtypes. C-reactive protein (CRP) and erythrocyte sedimentation rate (ESR) were higher especially in diarrhea-dominant IBS (IBS-D) (p=0.041; 0.046) and vitamin B12 were significantly lower in constipation-dominant IBS (IBS-C) (p=0.001). Conclusions Increased VDBP levels were associated with all IBS subtypes. Patients, especially in IBS-D, had higher serum levels of VDBP, CRP and ESR. Vitamin B12 deficiency, which we consider as a result of the disease, was more common in IBS-C.

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