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Background: There is limited literature in children on efficacy of different routes of vitamin B12 administration for vitamin B12 deficiency macrocytic-megaloblastic anemia.
Objective: To compare parenteral with oral vitamin B12 therapy in children with macrocytic-megaloblastic anemia.
Study Design: Single-center, open-label randomized controlled trial.
Participant: 80 children aged 2 month-18 year with clinical and laboratory features of nutritional macrocytic anemia.
Intervention: All children received an initial single parenteral dose of 1000 µg vitamin B12 followed by randomization to either parenteral or oral vitamin B12 for subsequent doses. Group A was given 1000 µg intramuscular (IM) vitamin B12 (3 doses on alternate days for those aged <10 year, five doses for age >10 year), followed by monthly 1000 µg IM for the subsequent two doses. Group B was given daily oral vitamin B12 1500 µg (500 µg in <2 years age) for three months. Folic acid and iron supple-mentation, and relevant dietary advice were given to both groups in a similar fashion.
Outcome: Improvement in serum vitamin B12 levels and total hemoglobin was compared three months post-treatment.
Result: The median(IQR) increase in serum vitamin B12 level was significantly higher in group A [600 (389,775) vs 399 (313, 606) pg/mL; P= 0.016]. The median (IQR) rise of hemoglobin was also more in group A [2.7 (0.4,4.6) vs 0.5 (-0.1,1.2) g/dL; P=0.001].
Conclusion: Increase in serum vitamin B12 levels and hemoglobin was better in children with nutritional macrocytic anemia receiving parenteral as compared to oral vitamin B12.
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Int J Biol Macromol
December 2024
College of Food Science, Northeast Agricultural University, Harbin, Heilongjiang 150030, China. Electronic address:
This study investigated the release mechanism and digestive characteristics of soy protein isolate (SPI)-loaded vitamin B during digestion. According to the molecular docking results, vitamin B interacted with the SPI through a hydrophobic pocket on the SPI surface. Spectroscopy revealed that the fluorescence intensity of the SPI and complex system increased with the digestion time.
View Article and Find Full Text PDFmSystems
December 2024
School of Biological Sciences, The University of Auckland, Auckland, New Zealand.
The genus () is most often associated with human clinical samples and livestock. However, are also prevalent in the hindgut of the marine herbivorous fish (Silver Drummer), and analysis of their carbohydrate-active enzyme (CAZyme) encoding gene repertoires suggests degrade macroalgal biomass to support fish nutrition. To further explore host-associated traits unique to -derived , we compared 445 high-quality genomes of available in public databases (e.
View Article and Find Full Text PDFNano Lett
December 2024
Department of Chemical and Biomolecular Engineering, Vanderbilt University, Nashville, Tennessee 37212, United States.
Atomically thin 2D materials present the potential for advancing membrane separations via a combination of high selectivity (from molecular sieving) and high permeance (due to atomic thinness). However, the creation of a high density of precise nanopores (narrow-size-distribution) over large areas in 2D materials remains challenging, and nonselective leakage from nanopore heterogeneity adversely impacts performance. Here, we demonstrate protein-enabled size-selective defect sealing (PDS) for atomically thin graphene membranes over centimeter scale areas by leveraging the size and reactivity of permeating proteins to preferentially seal larger nanopores (≥4 nm) while preserving a significant amount of smaller nanopores (via steric hindrance).
View Article and Find Full Text PDFAdv Lab Med
December 2024
Department of Laboratory Medicine, Hospital Universitari Son Espases, Palma, Spain.
Objectives: The presence of macro-B12 is a cause of factual hypervitaminemia B12. Precipitation with polyethylene glycol (PEG) is a simple method of removing high-molecular-weight biomolecules. However, "free" molecule may co-precipitate.
View Article and Find Full Text PDFProc (Bayl Univ Med Cent)
September 2024
Department of Dermatology, Baylor Scott and White Medical Center - Temple, Temple, TX, USA.
Cutaneous acneiform eruptions are a side effect of many medications, including vitamin B12 therapy. However, reports of vitamin B12-induced acne are rare. We present a 67-year-old woman with a new diagnosis of pernicious anemia who developed a sudden acneiform eruption on the face after treatment with high-dose vitamin B12.
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