In rats, mice, and humans, it is known that zinc deficiency may be related to anemia, and zinc supplementation influences hemoglobin production. Our previous studies indicate that in fish, zinc supplementation stimulates red blood cell (RBC) formation (erythropoiesis). However, it is not clear whether the mechanism of zinc-induced erythropoiesis stimulation in fish also occurs in rats. We induced anemia in rats using phenylhydrazine (PHZ) and injected either saline or ZnSO₄ solution. We found that an appropriate amount of zinc stimulated erythropoiesis in the PHZ-induced anemic rats. The effects of ZnSO₄ injection were dose-dependent. When the concentration of ZnSO₄ was higher than 2.8 mg zinc/kg body weight, the RBC level of the anemic rats increased from 60 ± 7% to 88 ± 10% that of the normal rats in two days. Rat bone marrow cells with or without ZnCl₂ supplementation were cultured in suspension in vitro. In the cell culture when the zinc concentration was at 0.3 mM, a 1.6-fold proliferation of nascent immature reticulocytes (new RBCs) was observed after one day. In the rat blood, zinc was combined with serum transferrin to induce erythropoiesis. The stimulation of RBC formation by zinc appears to be common among different animals.
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http://dx.doi.org/10.3390/ijms19092824 | DOI Listing |
Front Pediatr
December 2024
Department of Pediatrics, Division of Neonatology, University of Texas Southwestern Medical Center, Dallas, TX, United States.
Zinc (Zn) is one of the most prevalent and essential micronutrients, found in 10% of all human proteins and involved in numerous cellular enzymatic pathways. Zn is important in the neonatal brain, due to its involvement in neurotransmission, synaptic plasticity, and neural signaling. It acts as a neuronal modulator and is highly concentrated in certain brain regions, such as the hippocampus, and the retina.
View Article and Find Full Text PDFAndes Pediatr
October 2024
Facultad de Medicina, Departamento de Gastroenterología y Nutrición Pediátrica, Pontificia Universidad Católica de Chile, Santiago, Chile.
Unlabelled: The Ketogenic Diet (KD) is a non-pharmacological strategy for drug-resistant epilepsy (DRE) and inborn errors of metabolism (Glut-1 deficiency) management. KD is characterized by being restrictive, affecting micronutrient intake. There are different modalities of KD in which food intake and nutritional deficiencies vary.
View Article and Find Full Text PDFActa Med Philipp
November 2024
Philippine Primary Care Studies, University of the Philippines Diliman.
Background: Evaluation of primary care allows for identification of problems in the healthcare system, such as poor health outcomes, inappropriate health services, overuse of unnecessary resources, or underuse of recommended strategies. Assessment of adherence to existing clinical practice guidelines as quality indicators is critical for evaluating the effectiveness of primary care and shaping healthcare policies.
Objectives: To determine the adherence of primary care providers to existing practice guidelines for common pediatric concerns in remote, rural, and urban areas in the Philippines.
J Clin Aesthet Dermatol
December 2024
Dr. Barbosa Bueno de Campos is with Allergisa in Campinas, Brazil.
Objective: The desire for improved hair appearance, hair growth and strength are common drivers of supplementation for women experiencing thinning hair. This study examined the effect and safety of a gummy supplement containing B vitamins, zinc and botanical ingredients to improve hair growth, strength and perceived hair quality outcomes.
Methods: Healthy females (n=65) ages 18 to 60 with thinning hair were enrolled.
J Multidiscip Healthc
December 2024
Department of Epidemiology and Biostatistics, School of Public Health, University of Kinshasa, Kinshasa, Democratic Republic of the Congo.
Background: Malnourished children in low- and middle-income countries (LMICs) often exhibit reduced vaccine efficacy, particularly for oral vaccines like polio and rotavirus, due to impaired immune responses. Nutritional deficiencies, such as in vitamin A and zinc, along with environmental factors like poor sanitation, exacerbate this issue. Existing research has explored the individual impacts of malnutrition on vaccine outcomes, but a comprehensive framework that integrates nutritional, immune, and environmental factors has been lacking.
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