View clinical trials related to Vitamin B 12 Deficiency.
Filter by:Lipedema is a disease characterized by bilateral abnormal fat deposition in the upper and lower extremities. Pain is a common symptom in lipedema.Vitamin D plays an important role in chronic pain. Vitamin B have analgesic role in some neuropathic pain conditions.This study aimedto evaluate the relationship between vitamin D and vitamin B12 levels and neuropathic pain in lipedema.
This study aims to examine the effects of Sourse's Hype Bites at being able to increase vitamin B12 levels to promote positive health outcomes. Participants will consume Hype Bites daily. Participants will also take surveys and blood samples to examine both the subjective experience of taking Hype Bites as well as changes in biomarkers across the trial.
Vitamin B12 is a cofactor for 2 enzymes that have essential functions in pregnancy, both for maternal health and for fetal development. However, there is currently limited data regarding the metabolic fate and optimal dose of supplemental vitamin B12 and its relationship to vitamin B12 status in pregnancy. This is a single-blinded, stratified, dose-ranging trial of maternal vitamin B12 supplementation during pregnancy that will be conducted at the Ifakara Health Institute Bagamoyo Clinical Trial Unit in Tanzania. The investigators will enroll 40 pregnant women (gestational age 25-28 weeks) and 10 non-pregnant women (comparison group). Participants will be blinded to dosing (2.6, 10, and 50 µg) and supplementation will be given for four weeks. With this trial, the investigators aim to enhance our understanding of vitamin B12 bioavailability during pregnancy in people with sufficient and insufficient baseline B12 status, identify priority dose regimens of vitamin B12 in pregnancy for investigation in later phase clinical trials to be conducted in populations where vitamin B12 insufficiency or deficiency is common, and identify biomarkers of vitamin B12 intake appropriate for pregnancy.
Introduction: Infants with severe vitamin B12 (cobalamin, Cbl) deficiency can develop severe, sometimes irreparable neurological damage in the first months of life. Neonatal Cbl deficiency is usually secondary and due to low maternal Cbl stores, e.g. in vegan diets or pernicious anaemia. This Cbl deficiency is then often also found in breast milk. In the Austrian newborn screening (NBS) for congenital diseases of the Cbl metabolism, newborns with secondary Cbl deficiency are also frequently discovered. For these, the risk-benefit assessment of the invasive work-up and treatment that follows is complex. Little is known about how Cbl levels in maternal blood relate to those in breast milk and the corresponding levels in the child. Objective: To investigate the effects of maternal nutrition and maternal Cbl status on neonatal Cbl levels. In the breastfeeding period, the effects of maternal nutrition on breast milk and infant Cbl status will be investigated, as well as their relationship to the maternal and infant microbiome. We hypothesise that adequate Cbl supply in early life is not determined by diet alone, but also by the interactions between diet and microbiome. Design and methods: Prospective cohort studies of 100 women and their children with measurement of Cbl, methylmalonic acid, homocysteine and other metabolites of Cbl metabolism in umbilical cord blood, maternal blood, dried blood spots and urine from the child at birth. The same parameters are measured in the mother's blood and breast milk after 3 and 9 months; in the child, only measurements of methylmalonic acid in the urine are carried out. A 3-day dietary record is taken from the mother at all measurement times, and from the child at the measurement times of 3 and 9 months. Stool is collected from mother and child at all measurement time points to examine the microbiome relevant to Cbl metabolism. A child development interview will be conducted with mothers by telephone at 12 months of age of their child. Schedule: The study lasts 2 years with pre- and post-processing. The LKH Bregenz has about 1200 births per year. Assuming a willingness to participate in the study and an enrolment rate of about 20% of the women, a recruitment period of 6 months is planned (enrolment of first participant day 1, last participant end of study month 6; last laboratory parameter measurement end of study month 15; last child development interview study month 18).
Background: Micronutrient (MN) deficiencies are severe and widespread in West Africa, particularly among young children and women of reproductive age. Bouillon is a promising food fortification vehicle because the product is centrally processed on large scale, consumed by most households in West African countries (even rural, poor households), and consumed by most members of the household in relatively constant amounts. However, several important research questions remain regarding whether the use of fortified bouillon would be feasible and effective for preventing or reducing micronutrient deficiencies in communities where such deficiencies are common. Specifically, no studies have assessed the impacts of multiple micronutrient-fortified bouillon on micronutrient status. The West Africa Condiment Micronutrient Innovation Trial (CoMIT) Project aims to address this gap, to inform future discussions around fortification of bouillon cubes and related products. Objective: This study aims to assess the impacts of household use of multiple micronutrient-fortified bouillon cubes (containing iodine in addition to vitamin A, folic acid, vitamin B12, iron, and zinc), compared to control bouillon cubes fortified with iodine only, on: 1. Micronutrient status among women 15-49 years of age and children 2-5 years of age after 9 months of intervention 2. Hemoglobin concentrations among women 15-49 years of age and children 2-5 years of age after 9 months of intervention 3. Breast milk micronutrient concentrations among lactating women 4-18 months postpartum after 3 months of intervention Methods: This randomized, controlled doubly-masked trial will be conducted in the Kumbungu and Tolon districts in the Northern Region of Ghana, where prior data indicate that deficiencies in the selected nutrients are common. Potential participants will be: 1) non-pregnant non-lactating women of reproductive age (15 - 49 years old), 2) children 2-5 years of age, and 3) non-pregnant lactating women 4-18 months postpartum. Eligible participants will be randomly assigned to receive household rations of one of two types of bouillon cubes: 1. a multiple micronutrient-fortified bouillon cube containing vitamin A, folic acid, vitamin B12, iron, zinc, and iodine, or 2. a control cube containing iodine only Each participant's household will receive a specific amount of bouillon cube every 2 weeks, and households will be advised to prepare their meals as usual, using the study-provided cubes. The trial duration will be 9 months (38 weeks) for non-pregnant, non-lactating women and children 2-5 years of age, and 3 months (12 weeks) for lactating women. The primary outcomes will be changes from baseline to endline in concentrations of haemoglobin and biomarkers of micronutrient status. Secondary outcomes will include change in prevalence of anaemia and micronutrient deficiency; dietary intake of bouillon and micronutrients; inflammation, malaria, and morbidity symptoms; and children's anthropometric measures and child development.
Women of reproductive age are a high-risk population for anaemia and micronutrient deficiencies. Evidence supports the role of periconceptional nutrition in the development of adverse pregnancy complications. However, in India, there are limited population-based data to guide evidence-based recommendations and priority setting. The objective of this study is to conduct a population-based biomarker survey of anaemia and vitamin B12 and folate status in women of reproductive age as part of a periconceptional surveillance program in Southern India.
Women of reproductive age are at an increased risk of anemia and micronutrient deficiencies. Evidence supports the role of periconceptional nutrition in the development of neural tube defects and other pregnancy complications. Vitamin B12 deficiency is a risk factor for neural tube defects and may modify folate biomarkers that predict neural tube defect risk at the population level. There is an interest in mandatory fortification with vitamin B12 and folic acid for anemia and birth defect prevention. However, there are limited population-representative data needed to inform policy and guidelines. This randomized trial will be conducted to evaluate the efficacy of quadruple-fortified salt (QFS; iron, iodine, folic acid, vitamin B12) in 1,000 women and their households in Southern India.
Scientific basis: Globally, vitamin B12 deficiency is one of the most common micronutrient deficiencies. The only relevant source of vitamin B12 is animal-source foods and poor gut function may decrease absorption. Vitamin B12 is crucial for normal cell division and differentiation, and necessary for the development and myelination of the central nervous system. Deficiency is also associated with impaired fetal and infant growth. In the proposed study we will measure the effect of daily oral vitamin B12 supplementation to pregnant women on neurodevelopment and growth of their children. We also aim to measure the impact of B12 supplementation on several other outcomes. Study design: Individually randomized double-blind placebo controlled trial in pregnant South Asian women at risk of poor vitamin B12 status. Participants will be randomized in a 1:1 ratio. Study participants and site: 800 pregnant women from early pregnancy. Women will be enrolled as early as possible, but no later than in week 15 of pregnancy. Intervention: Daily administration of 50 µg of vitamin B12 from early pregnancy until 6 months after birth. Comparator: Placebo, identical to the vitamin B12 supplements. Outcomes: Primary: (i) neurodevelopment in children measured at 6 and 12 months of age (ii) growth in children measured by weight and length at 12 months. Secondary: (i) neurodevelopment and cognitive functioning in children at 24 months (ii) gestational age at birth, (iii) fetal and infant growth measured by weight and length at birth, after 1 month and then at 3, 6, 9, and 24 months, (iv) hemoglobin concentration in children and mothers. Relevance for programs and public health: The results from this study can suggest new dietary guidelines for South Asian women that again can lead to improved pregnancy outcomes and neurodevelopment and cognitive functioning in South Asian children.
The clinical consequences of vitamin B12 deficiency include megaloblastic anemia and neurological disorders. Therefore, a proper and timely diagnosis and treatment is important. The use of sensitive biochemical markers such as methylmalonic acid for the diagnosis of vitamin B12 deficiency have increased since the 1980s. Consequently, the number of individuals treated with vitamin B12 has increased significantly. The objective of this project is to study the actual need for vitamin B12 injections in the group of individuals who have already started treatment. In order to investigate this, the investigators stop vitamin B12 treatment in this group, and look for signs of vitamin B12 deficiency by monitoring changes in biochemical and hematological markers. Furthermore, they will test if the individuals are able to absorb a physiological dose of vitamin B12 using a recently developed absorption test (CobaSorb). If a physiological dose can be absorbed, the vitamin B12 injections can be replaced with tablets. In the end, the investigators hope to be able to divide the patients into three groups: 1. need life long injections with vitamin B12, 2. only need supplementations with a small dose of oral vitamin B12, and 3. no need for further vitamin B12 treatment. The perspective is that the new information from this study might be used for a future strategy for vitamin B12 treatment.