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2.
Nutrients ; 16(12)2024 Jun 17.
Artigo em Inglês | MEDLINE | ID: mdl-38931257

RESUMO

Depression is a major global health concern expected to worsen by 2030. In 2019, 28 million individuals were affected by depressive disorders. Dietary and supplemental vitamins show overall favorable preventative and therapeutic effects on depression. B vitamins are crucial for neurological function and mood regulation. Deficiencies in these vitamins are linked to depression. Studies on individual B vitamins show promise in improving depressive symptoms, particularly thiamin, riboflavin, niacin, and folate. Vitamin C deficiency may heighten depressive symptoms, but its exact role is not fully understood. Seasonal Affective Disorder (SAD) is associated with insufficient sunlight exposure and vitamin D deficiency. Vitamin D supplementation for SAD shows inconsistent results due to methodological variations. Further investigation is needed to understand the mechanisms of vitamins in depression treatment. Moreover, more research on SAD and light therapy's efficacy and underlying mechanisms involving photoreceptors, enzymes, and immune markers is needed. Although dietary and supplemental vitamins show overall favorable preventative and therapeutic effects on depression, dietitians treating psychiatric disorders face challenges due to diverse study designs, making direct comparisons difficult. Therefore, this article reviews the current literature to assess the role of dietary and supplemental vitamins in the prevention and treatment of depression. This review found that, although evidence supports the role of B vitamins and vitamins C and D in preventing and treating depression, further research is needed to clarify their mechanisms of action and determine the most effective intervention strategies.


Assuntos
Depressão , Suplementos Nutricionais , Transtorno Afetivo Sazonal , Vitamina D , Vitaminas , Humanos , Transtorno Afetivo Sazonal/terapia , Transtorno Afetivo Sazonal/prevenção & controle , Vitamina D/uso terapêutico , Vitamina D/administração & dosagem , Vitaminas/uso terapêutico , Vitaminas/administração & dosagem , Depressão/prevenção & controle , Adulto , Ácido Ascórbico/uso terapêutico , Ácido Ascórbico/administração & dosagem , Complexo Vitamínico B/uso terapêutico , Deficiência de Vitamina D/complicações , Deficiência de Vitamina D/tratamento farmacológico , Feminino , Solubilidade
3.
Clin Drug Investig ; 44(6): 413-424, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38842764

RESUMO

BACKGROUND: Musculoskeletal disorders are an important cause of work absence. Clinical practice guidelines recommend nonsteroidal anti-inflammatory drugs (NSAIDs) for grade I-II cervical sprains. The combination of thiamine + pyridoxine + cyanocobalamin vitamins has been used, alone and in combination with NSAIDs, for pain and inflammation in musculoskeletal disorders. OBJECTIVE: The objective of this study was to demonstrate the analgesic synergy of dexketoprofen, and the combination of vitamins thiamine + pyridoxine + cyanocobalamin in a fixed-dose combination (FDC) for the treatment of acute pain caused by grade I-II cervical sprains. METHODS: We conducted a multicentre, prospective, randomized, double-blind, phase IIIb clinical study comparing two treatment groups: (1) dexketoprofen 25 mg/vitamin B (thiamine 100 mg, pyridoxine 50 mg and cyanocobalamin 0.50 mg) in an FDC (two or more active ingredients combined in a single dosage form) versus (2) dexketoprofen 25 mg monotherapy (single drug to treat a particular disease), one capsule or tablet orally, every 8 h for 7 days. Final mean, average change, and percentage change in pain perception (measured using a visual analogue scale [VAS]) were compared with baseline between groups. A p value < 0.05 was considered statistically significant. Analyses were conducted using SPSS software, v.29.0. RESULTS: A statistically significant reduction in pain intensity was observed from the third day of treatment with the FDC compared with monotherapy (- 3.1 ± - 1.5 and - 2.6 ± - 1.1 cm, respectively) measured using the VAS (p = 0.011). Regarding the degree of disability, using the Northwick Park Neck Pain Questionnaire (NPQ), statistical difference was observed for the final measurement (7.5%, interquartile range [IQR] 2.5, 10.5; vs. 7.9%, IQR 5.0, 13.8; p = 0.028). A lower proportion of adverse events was reported when using the FDC. CONCLUSIONS: The FDC of dexketoprofen/thiamine + pyridoxine + cyanocobalamin vitamins demonstrated superior efficacy and a better safety profile compared with dexketoprofen monotherapy for pain treatment in patients with grade I-II cervical sprains. CLINICAL TRIALS REGISTRATION: NCT05001555, registered 29 July 2021 ( https://clinicaltrials.gov/study/NCT05001555 ).


Assuntos
Anti-Inflamatórios não Esteroides , Combinação de Medicamentos , Cetoprofeno , Piridoxina , Tiamina , Trometamina , Vitamina B 12 , Humanos , Método Duplo-Cego , Tiamina/administração & dosagem , Tiamina/análogos & derivados , Tiamina/uso terapêutico , Cetoprofeno/administração & dosagem , Cetoprofeno/análogos & derivados , Feminino , Adulto , Piridoxina/administração & dosagem , Piridoxina/uso terapêutico , Masculino , Anti-Inflamatórios não Esteroides/administração & dosagem , Vitamina B 12/análogos & derivados , Vitamina B 12/administração & dosagem , Vitamina B 12/uso terapêutico , Pessoa de Meia-Idade , Trometamina/administração & dosagem , Estudos Prospectivos , Complexo Vitamínico B/administração & dosagem , Complexo Vitamínico B/uso terapêutico , Medição da Dor/métodos , Adulto Jovem
4.
Nutrients ; 16(11)2024 May 21.
Artigo em Inglês | MEDLINE | ID: mdl-38892484

RESUMO

Exploring the link between genetic polymorphisms in folate metabolism genes (MTHFR, MTR, and MTRR) and cardiovascular disease (CVD), this study evaluates the effect of B vitamin supplements (methylfolate, pyridoxal-5'-phosphate, and methylcobalamin) on homocysteine and lipid levels, potentially guiding personalized CVD risk management. In a randomized, double-blind, placebo-controlled trial, 54 patients aged 40-75 with elevated homocysteine and moderate LDL-C levels were divided based on MTHFR, MTR, and MTRR genetic polymorphisms. Over six months, they received either a combination of methylfolate, P5P, and methylcobalamin, or a placebo. At the 6 months follow-up, the treatment group demonstrated a significant reduction in homocysteine levels by 30.0% (95% CI: -39.7% to -20.3%) and LDL-C by 7.5% (95% CI: -10.3% to -4.7%), compared to the placebo (p < 0.01 for all). In the subgroup analysis, Homozygous Minor Allele Carriers showed a more significant reduction in homocysteine levels (48.3%, 95% CI: -62.3% to -34.3%, p < 0.01) compared to mixed allele carriers (18.6%, 95% CI: -25.6% to -11.6%, p < 0.01), with a notable intergroup difference (29.7%, 95% CI: -50.7% to -8.7%, p < 0.01). LDL-C levels decreased by 11.8% in homozygous carriers (95% CI: -15.8% to -7.8%, p < 0.01) and 4.8% in mixed allele carriers (95% CI: -6.8% to -2.8%, p < 0.01), with a significant between-group difference (7.0%, 95% CI: -13.0% to -1.0%, p < 0.01). Methylfolate, P5P, and methylcobalamin supplementation tailored to genetic profiles effectively reduced homocysteine and LDL-C levels in patients with specific MTHFR, MTR, and MTRR polymorphisms, particularly with homozygous minor allele polymorphisms.


Assuntos
5-Metiltetra-Hidrofolato-Homocisteína S-Metiltransferase , LDL-Colesterol , Suplementos Nutricionais , Ferredoxina-NADP Redutase , Homocisteína , Metilenotetra-Hidrofolato Redutase (NADPH2) , Fosfato de Piridoxal , Tetra-Hidrofolatos , Vitamina B 12 , Humanos , Pessoa de Meia-Idade , Homocisteína/sangue , Feminino , Masculino , Metilenotetra-Hidrofolato Redutase (NADPH2)/genética , Método Duplo-Cego , 5-Metiltetra-Hidrofolato-Homocisteína S-Metiltransferase/genética , LDL-Colesterol/sangue , Idoso , Vitamina B 12/administração & dosagem , Vitamina B 12/análogos & derivados , Adulto , Ferredoxina-NADP Redutase/genética , Tetra-Hidrofolatos/administração & dosagem , Polimorfismo Genético , Complexo Vitamínico B/uso terapêutico , Complexo Vitamínico B/administração & dosagem , Complexo Vitamínico B/farmacologia
5.
Exp Oncol ; 46(1): 38-44, 2024 May 31.
Artigo em Inglês | MEDLINE | ID: mdl-38852054

RESUMO

BACKGROUND: Paclitaxel is a highly effective chemotherapeutic agent used to treat breast, ovarian, and other cancers. At the same time, paclitaxel causes peripheral neuropathy as a side effect in 45%-70% of patients. AIM: The aim of the study was to investigate the effect of paclitaxel-induced peripheral neuropathy on the development of pathological changes in the salivary glands of animals and to explore the possibility of correction of the identified changes with vitamin B/ATP complex. MATERIALS AND METHODS: To simulate toxic neuropathy, animals were injected i/p with paclitaxel 2 mg/kg for 4 days. In order to correct the identified changes, rats were injected i/m with vitamin B/ATP complex (1 mg/ kg) for 9 days. In the homogenate of the submandibular salivary glands, α-amylase activity, total proteolytic activity, total antitryptic activity, the content of medium mass molecules, thiobarbituric acid reactive substances (TBARS), oxidatively modified proteins, and catalase activity were determined. RESULTS: A significant increase in the content of oxidatively modified proteins, medium mass molecules, and the content of TBARS and significant decrease in the activity of catalase and amylase were determined in the salivary glands of animals with toxic neuropathy compared to these parameters in intact animals. Administration of vitamin B/ATP complex for 9 days against the background of paclitaxel-induced neuropathy led to normalization of antitryptic activity and amylase activity, a significant decrease in the content of oxidatively modified proteins, medium mass molecules, and TBARS along with a significant increase in catalase activity in the salivary glands of animals compared to the untreated rats with neuropathy. CONCLUSION: Paclitaxel-induced neuropathy caused the development of pathological changes in the salivary glands of rats, which was evidenced by a carbonyl- oxidative stress and impaired protein synthetic function. The correction with vitamin B/ATP complex restored the protein-synthetic function and the proteinase-inhibitor balance, suppressed the oxidative stress and normalized free radical processes in the salivary glands of rats.


Assuntos
Paclitaxel , Doenças do Sistema Nervoso Periférico , Glândulas Salivares , Animais , Paclitaxel/efeitos adversos , Paclitaxel/farmacologia , Glândulas Salivares/efeitos dos fármacos , Glândulas Salivares/patologia , Glândulas Salivares/metabolismo , Ratos , Doenças do Sistema Nervoso Periférico/induzido quimicamente , Doenças do Sistema Nervoso Periférico/patologia , Antineoplásicos Fitogênicos/efeitos adversos , Antineoplásicos Fitogênicos/farmacologia , Ratos Wistar , Estresse Oxidativo/efeitos dos fármacos , Trifosfato de Adenosina/metabolismo , Complexo Vitamínico B/farmacologia , Complexo Vitamínico B/uso terapêutico , Masculino , Substâncias Reativas com Ácido Tiobarbitúrico/metabolismo , Catalase/metabolismo
6.
Artigo em Russo | MEDLINE | ID: mdl-38884433

RESUMO

Various diseases of the peripheral nervous system are associated with metabolic disorders of B vitamins. A lack of neurotropic vitamins, which began in the early stages of the development of a bacterial disease, led to its more rapid development. The article analyzes data on B vitamin deficiency in the pathogenesis of the most dangerous diseases of the peripheral nervous system. Information is provided about the dangers of the clinical use of the drug Combilipen for the treatment of such patients.


Assuntos
Doenças do Sistema Nervoso Periférico , Complexo Vitamínico B , Humanos , Complexo Vitamínico B/uso terapêutico , Deficiência de Vitaminas do Complexo B/complicações , Deficiência de Vitaminas do Complexo B/tratamento farmacológico
7.
Clin Cardiol ; 47(7): e24309, 2024 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-38940395

RESUMO

BACKGROUND: Chronic heart failure (CHF) has always posed a significant threat to human survival and health. The efficacy of thiamine supplementation in CHF patients remains uncertain. HYPOTHESIS: Receiving supplementary thiamine may not confer benefits to patients with CHF. METHODS: A comprehensive search was conducted across the Cochrane Library, PubMed, EMBASE, ClinicalTrials.gov, and Web of Science databases up until May 2023 to identify articles investigating the effects of thiamine supplementation in CHF patients. Predefined criteria were utilized for selecting data on study characteristics and results. RESULTS: Seven randomized, double-blind, controlled trials (five parallel trials and two crossover trials) involving a total of 274 patients were enrolled. The results of the meta-analysis pooling these studies did not reveal any significant effect of thiamine treatment compared with placebo on left ventricular ejection fraction (WMD = 1.653%, 95% CI:  -1.098 to 4.405, p = 0.239, I2 = 61.8%), left ventricular end-diastolic volume (WMD = -6.831 mL, 95% CI:  -26.367 to 12.704, p = 0.493, I2 = 0.0%), 6-min walking test (WMD = 16.526 m, 95% CI:  -36.582 to 69.634, p = 0.542, I2 = 66.3%), N-terminal pro-B type natriuretic peptide (WMD = 258.150 pg/mL, 95% CI:  -236.406 to 752.707, p = 0.306, I2 = 21.6%), or New York Heart Association class (WMD = -0.223, 95% CI:  -0.781 to 0.335, p = 0.434, I2 = 87.1%). However, it effectively improved the status of thiamine deficiency (TD). CONCLUSIONS: Our meta-analysis indicates that thiamine supplementation does not have a direct therapeutic effect on CHF, except for correcting TD.


Assuntos
Suplementos Nutricionais , Insuficiência Cardíaca , Ensaios Clínicos Controlados Aleatórios como Assunto , Tiamina , Humanos , Doença Crônica , Insuficiência Cardíaca/tratamento farmacológico , Insuficiência Cardíaca/fisiopatologia , Volume Sistólico/efeitos dos fármacos , Volume Sistólico/fisiologia , Tiamina/uso terapêutico , Tiamina/administração & dosagem , Resultado do Tratamento , Função Ventricular Esquerda/efeitos dos fármacos , Função Ventricular Esquerda/fisiologia , Complexo Vitamínico B/uso terapêutico
8.
J Zoo Wildl Med ; 55(2): 447-452, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38875201

RESUMO

The mass extinction of amphibians necessitates specialized programs to ensure species' survival. Maryland Zoo in Baltimore houses the largest assurance population of the critically endangered Panamanian golden frog (Atelopus zeteki). However, individuals in this population experience a tetany-like syndrome, characterized by rigid/inappropriately positioned limbs and difficulty hopping, swimming, and righting. In this study, a syndrome case definition was assigned and the associated clinical signs were described. Then, four different treatments were systematically assessed in order to find the most effective protocol for treatment and begin to elucidate its underlying causes. Eighty-three frogs fulfilled the case definition and were treated orally for 14 d with either calcium gluconate, magnesium chloride, supplemental gavage feeding, or combination of calcium, magnesium, and vitamin B complex. Frogs were tested with a defined protocol assessing hopping, righting, and swimming abilities. Testing was performed at symptom onset and repeated weekly until resolution occurred. Analyses revealed that combination treatment was significantly more effective in eliminating clinical signs of tetany syndrome. Results show the most effective way to treat this syndrome, but do not help elucidate the underlying cause. Future work will focus on examining factors (e.g., diet, husbandry) that may elicit the syndrome for a more complete understanding of its etiology.


Assuntos
Tetania , Animais , Tetania/veterinária , Tetania/tratamento farmacológico , Anuros , Animais de Zoológico , Masculino , Feminino , Complexo Vitamínico B/uso terapêutico , Complexo Vitamínico B/administração & dosagem
9.
Medicine (Baltimore) ; 103(19): e38154, 2024 May 10.
Artigo em Inglês | MEDLINE | ID: mdl-38728462

RESUMO

Folic acid is the synthetic form of vitamin B9, found in supplements and fortified foods, while folate occurs naturally in foods. Folic acid and its derivatives are extremely important in the synthesis of nucleic acids (DNA and ribose nucleic acid [RNA]) and different proteins. It acts as a coenzyme for the transfer of 1 carbon in the biosynthesis of purine, pyrimidine, and amino acids. Folic acid is critically important in rapidly proliferating tissues, including fetus and trophoblastic tissue to prevent neural tube defect (NTD). The main objective of this review is to identify the role of folic acid to prevent NTD among pregnancy mothers. Electronic databases including Web of Science, Google Scholar, MEDLINE, Scopus, and Cochrane library used to systematically search without limitation of publication date and status. In pregnancy, the first trimester is a significant time for neural tube closure. Decreased blood folic acid levels inhibit DNA replication, repair, RNA synthesis, histone and DNA methylation, methionine production, and homocysteine remethylation reactions that cause NTDs in pregnancy. Therefore, folic acid supplementation is critically important for childbearing mothers before conception and in the first trimester pregnancy. As a result, women are recommended to take 400 microgram FA/day from preconception until the end of the first trimester to prevent NTD-affected pregnancies. This allows the developing neural tissue to acquire critical mass and provides the preferred rostrocaudal orientation so that these divisions contribute to the elongation of the developing neural tube in embryos.


Assuntos
Suplementos Nutricionais , Ácido Fólico , Defeitos do Tubo Neural , Feminino , Humanos , Gravidez , Ácido Fólico/administração & dosagem , Defeitos do Tubo Neural/prevenção & controle , Complexo Vitamínico B/uso terapêutico
10.
Medicina (Kaunas) ; 60(5)2024 May 08.
Artigo em Inglês | MEDLINE | ID: mdl-38792966

RESUMO

Background and Objectives: Erdosteine (Erd) is an antioxidant and anti-inflammatory drug. Vitamin B has been reported to exert anti-inflammatory and antioxidant effects. In this study, we investigated the effect of erdosteine and vitamin B complex on a liver ischemia/reperfusion (I/R) model. Materials and Methods: Thirty-two Wistar Albino male rats weighing 350-400 g were used. The animals were randomly selected and divided into four groups. The groups are as follows: first group (Sham), second group (I/R), third group (I/R + vit B), and fourth group (I/R + vit B + Erd). Rats were subjected to 45 min of hepatic ischemia, followed by a 45 min reperfusion period in the I/R and Vitamin B + Erd groups. An amount of 150 mg/kg/day of erdosteine was given orally for 2 days, and 0.05 mL/kg of i.p. vitamin B complex was given 30 min before the reperfusion. Serum biochemical parameters were measured. Serum Total Antioxidant Status (TAS) and Total Oxidant Status (TOS) were measured, and the Oxidative Stress Index (OSI) was calculated. Hepatic tissue samples were taken for the evaluation of histopathological features. Results: In terms of all histopathological parameters, there were significant differences in the I/R + vit B group and I/R + vit B + Erd group compared with the I/R group (p < 0.01). In terms of aspartate aminotransferase (AST), alanine aminotransferase (ALT), lactate dehydrogenase (LDH), TNF-alpha, and IL-6 levels, there were significant differences between the I/R group and treatment groups (p < 0.01). The lowest TOS and OSI levels were obtained in the treatment groups, and these groups had statistically significantly higher TAS levels compared with the sham and I/R groups (p < 0.01). Conclusions: As a preliminary experimental study, our study suggests that these agents may have potential diagnostic and therapeutic implications for both ischemic conditions and liver-related diseases. These results suggest that the combination of vit B + Erd may be used to protect against the devastating effects of I/R injury. Our study needs to be confirmed by clinical studies with large participation.


Assuntos
Antioxidantes , Modelos Animais de Doenças , Fígado , Estresse Oxidativo , Ratos Wistar , Traumatismo por Reperfusão , Tioglicolatos , Tiofenos , Animais , Tioglicolatos/uso terapêutico , Tioglicolatos/farmacologia , Traumatismo por Reperfusão/tratamento farmacológico , Masculino , Tiofenos/uso terapêutico , Tiofenos/farmacologia , Ratos , Fígado/efeitos dos fármacos , Fígado/metabolismo , Antioxidantes/uso terapêutico , Antioxidantes/farmacologia , Estresse Oxidativo/efeitos dos fármacos , Complexo Vitamínico B/uso terapêutico , Complexo Vitamínico B/farmacologia , Aspartato Aminotransferases/sangue , Aspartato Aminotransferases/análise , Alanina Transaminase/sangue
11.
BMJ Case Rep ; 17(5)2024 May 29.
Artigo em Inglês | MEDLINE | ID: mdl-38816012

RESUMO

A pregnant woman in her 20s at 17 weeks of gestation, presented with symptoms of painless diminution of vision preceded by 8 weeks history of hyperemesis gravidarum. On examination, she was confused, disoriented and had gait ataxia with complete loss of vision in both eyes. Fundus examination revealed grade 4 disc oedema with superficial retinal haemorrhages. Possibilities kept were cerebral venous sinus thrombosis, neuromyelitis optica spectrum disorder, posterior reversible encephalopathy syndrome and Wernicke's encephalopathy (WE). Thiamine levels were low. MRI brain with MR venography revealed symmetrical areas of hyperintensities in bilateral medial thalami, hypothalamus, mammillary body and area postrema. She was managed as a case of WE with intravenous thiamine with complete clinical and radiological resolution within 2 weeks of treatment. Therefore, we conclude that a high index of suspicion of WE in appropriate clinical settings leading to early treatment can potentially reverse its grave clinical symptoms and complications.


Assuntos
Hiperêmese Gravídica , Encefalopatia de Wernicke , Humanos , Feminino , Hiperêmese Gravídica/complicações , Hiperêmese Gravídica/diagnóstico , Gravidez , Encefalopatia de Wernicke/diagnóstico , Encefalopatia de Wernicke/tratamento farmacológico , Encefalopatia de Wernicke/etiologia , Adulto , Imageamento por Ressonância Magnética , Tiamina/uso terapêutico , Tiamina/administração & dosagem , Complexo Vitamínico B/uso terapêutico , Complexo Vitamínico B/administração & dosagem , Diagnóstico Diferencial , Complicações na Gravidez/diagnóstico , Transtornos da Visão/etiologia
12.
Asia Pac J Clin Nutr ; 33(2): 194-199, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38794979

RESUMO

BACKGROUND AND OBJECTIVES: Feeding intolerance (FI) is a common problem in late preterm infants (34 weeks ≤ gestational age < 37 weeks). This study aimed to evaluate the efficacy and safety of phentolamine combined with B vitamins in treating FI in late preterm infants and to explore its effects on gastrointestinal symptoms, inflammation and complications. METHODS AND STUDY DESIGN: We randomly assigned 118 late preterm infants with FI to a treatment group (n = 56) or a control group (n = 62). The treatment group received intravenous phentolamine and intramuscular B vitamins, whereas the control group received basic treatment only. We measured the time of disappearance of gastrointestinal symptoms, the time of basal at-tainment, the time of hospitalisation, the incidence of complications, the concentrations of inflammatory markers and the overall effective rate of treatment. RESULTS: The treatment group had a shorter duration of gastrointestinal symptoms than did the control group (p < 0.01). The treatment group also had lower concentrations of inflammatory markers and a higher overall effective rate than did the control group (p < 0.05). There was no difference between the two groups in the time of hospitalisation, basal attainment, weight re-covery and the incidence of complications (p > 0.05). CONCLUSIONS: Phentolamine and B vitamins can reduce gastrointestinal symptoms and inflammation in late preterm infants with FI but do not affect the occurrence of complications.


Assuntos
Recém-Nascido Prematuro , Fentolamina , Complexo Vitamínico B , Humanos , Recém-Nascido , Masculino , Feminino , Fentolamina/administração & dosagem , Complexo Vitamínico B/administração & dosagem , Complexo Vitamínico B/uso terapêutico , Intolerância Alimentar , Gastroenteropatias/tratamento farmacológico
13.
Nutrients ; 16(9)2024 Apr 29.
Artigo em Inglês | MEDLINE | ID: mdl-38732592

RESUMO

This review aims to evaluate the efficacy of any vitamin administration(s) in preventing and managing COVID-19 and/or long-COVID. Databases were searched up to May 2023 to identify randomized clinical trials comparing data on the effects of vitamin supplementation(s) versus placebo or standard of care on the two conditions of interest. Inverse-variance random-effects meta-analyses were conducted to estimate pooled risk ratios (RRs) and 95% confidence intervals (CIs) for all-cause mortality between supplemented and non-supplemented individuals. Overall, 37 articles were included: two regarded COVID-19 and long-COVID prevention and 35 records the COVID-19 management. The effects of vitamin D in preventing COVID-19 and long-COVID were contrasting. Similarly, no conclusion could be drawn on the efficacy of multivitamins, vitamin A, and vitamin B in COVID-19 management. A few positive findings were reported in some vitamin C trials but results were inconsistent in most outcomes, excluding all-cause mortality (RR = 0.84; 95% CI: 0.72-0.97). Vitamin D results were mixed in most aspects, including mortality, in which benefits were observed in regular administrations only (RR = 0.67; 95% CI: 0.49-0.91). Despite some benefits, results were mostly contradictory. Variety in recruitment and treatment protocols might explain this heterogeneity. Better-designed studies are needed to clarify these vitamins' potential effects against SARS-CoV-2.


Assuntos
Ácido Ascórbico , COVID-19 , Suplementos Nutricionais , Ensaios Clínicos Controlados Aleatórios como Assunto , SARS-CoV-2 , Vitamina A , Vitamina D , Vitaminas , Humanos , COVID-19/prevenção & controle , COVID-19/mortalidade , Vitaminas/uso terapêutico , Vitamina D/uso terapêutico , Vitamina D/administração & dosagem , Ácido Ascórbico/uso terapêutico , Ácido Ascórbico/administração & dosagem , Vitamina A/uso terapêutico , Vitamina A/administração & dosagem , Tratamento Farmacológico da COVID-19 , Complexo Vitamínico B/uso terapêutico
15.
BMC Pregnancy Childbirth ; 24(1): 241, 2024 Apr 05.
Artigo em Inglês | MEDLINE | ID: mdl-38580949

RESUMO

BACKGROUND: Folic acid, a water-soluble B-complex vitamin, plays a crucial role in DNA synthesis and maintenance, making it particularly significant during reproduction. Its well-known ability to reduce the risk of congenital anomalies during the periconceptional period underscores its importance. The increased requirement for folate during pregnancy and lactation is essential to support the physiological changes of the mother and ensure optimal growth and development of the foetus and offspring. This study assessed the knowledge, awareness, and use of folic acid among pregnant and lactating women of reproductive age residing in Dodowa in the Shai Osu-Doku District, Accra, Ghana. METHODS: The study was a cross-sectional design that involved 388 randomly selected participants (97 pregnant and 291 lactating women). Structured questionnaires were administered to gather information on the socioeconomic demographic characteristics, knowledge, awareness, and use of folic acid of the participants. Dietary intake was assessed using a food frequency questionnaire. The data were analysed using descriptive statistics and Pearson's chi-square analysis tests and are presented as frequencies and percentages, means, standard deviations, bar graphs, and pie charts. The significance of the results was determined at a 95% confidence interval. RESULTS: The mean age of the participants was 31 ± 5.0 years. Among the study participants, 46.1% demonstrated knowledge of folic acid deficiency, while approximately 68.3% had a high awareness of folic acid supplementation. Approximately 75% of the participants indicated that they had not used folic acid supplements within the week, and 15.5% reported consuming folic acid-fortified food per week. CONCLUSIONS: The women exhibited high awareness but poor knowledge regarding the usage of folic acid supplementation during pregnancy and lactation. Consequently, this lack of knowledge influenced the low use of folic acid supplements and low intake of folate-rich foods among pregnant and lactating mothers.


Assuntos
Defeitos do Tubo Neural , Complexo Vitamínico B , Gravidez , Feminino , Humanos , Adulto , Ácido Fólico/uso terapêutico , Estudos Transversais , Gana , Lactação , Conhecimentos, Atitudes e Prática em Saúde , Suplementos Nutricionais , Complexo Vitamínico B/uso terapêutico , Inquéritos e Questionários
17.
Obes Surg ; 34(6): 2271-2273, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38658468

RESUMO

Wernicke encephalopathy (WE) is a seldom encountered yet significant neuropsychiatric ailment resulting from a deficiency in thiamine (vitamin B1). While commonly linked with chronic alcoholism or insufficient dietary intake, instances of WE following bariatric and metabolic surgeries, notably laparoscopic Roux-en-Y gastric bypass (RYGB), have been sporadically documented. This case study elucidates the condition of a male patient who, 3 months after undergoing RYGB to address severe obesity, displayed abrupt alterations in mental status, swiftly ameliorated by immediate administration of intravenous high-dose thiamine.


Assuntos
Derivação Gástrica , Obesidade Mórbida , Tiamina , Encefalopatia de Wernicke , Humanos , Encefalopatia de Wernicke/etiologia , Derivação Gástrica/efeitos adversos , Masculino , Obesidade Mórbida/cirurgia , Tiamina/administração & dosagem , Tiamina/uso terapêutico , Deficiência de Tiamina/etiologia , Adulto , Complicações Pós-Operatórias , Complexo Vitamínico B/administração & dosagem , Complexo Vitamínico B/uso terapêutico
18.
Dermatology ; 240(3): 453-461, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38599196

RESUMO

INTRODUCTION: Ultraviolet radiation (UVR) is the primary risk factor for keratinocyte carcinomas. Oral supplementation with nicotinamide (NAM) is reported to reduce the formation of new keratinocyte carcinomas. NAM's photoprotection is mediated by enhanced DNA repair. We wanted to explore whether NAM in combination with antiproliferative (metformin [Met]) or antioxidant (phloroglucinol [PG]) compounds could potentially enhance its photoprotective effects. METHODS: Hairless mice (C3.Cg-Hrhr/TifBomTac) were treated orally with either a standard dose of NAM monotherapy (NAM-mono; 600 mg/kg) or NAM (400 mg/kg) combined with Met (200 mg/kg) (NAM-Met) or PG (75 mg/kg) (NAM-PG). Mice were irradiated with 3.5 standard erythema doses of UVR three times per week to induce tumour development. Photoprotective effects were based on (i) tumour onset of the first three tumours, (ii) skin photodamage, and (iii) DNA damage (cyclobutane pyrimidine dimers [CPDs] and pyrimidine-pyrimidone (6-4) photoproducts [6-4PPs]). RESULTS: All mice treated with NAM demonstrated a delay in tumour onset and reduced tumour burden compared to the UV control group (NAM, NAM-Met, NAM-PG vs. UV control: p ≤ 0.015). NAM-mono and NAM-PG increased time until all three tumours with no difference between them, indicating a similar degree of photoprotection. NAM-mono had no effect on DNA damage compared to the UV control group (p > 0.05), whereas NAM-PG reduced 6-4PP lesions (p < 0.01) but not CPDs (p > 0.05) compared to NAM-mono. NAM-Met delayed the onset of the third tumour compared to the UV control but demonstrated a quicker onset compared to NAM-mono, suggesting inferior photoprotection compared to nicotinamide monotherapy. CONCLUSION: NAM-PG was as effective in delaying UVR-induced tumour onset as NAM-mono. The reduction in 6-4PP lesions may indicate that the mechanism of NAM-PG is better suited for photoprotection than NAM-mono. NAM-mono was superior to NAM-Met, indicating a dose dependency of NAM's photoprotection. These results highlight the potential for combining photoprotective compounds to enhance photoprotection.


Assuntos
Metformina , Camundongos Pelados , Niacinamida , Neoplasias Cutâneas , Raios Ultravioleta , Animais , Niacinamida/uso terapêutico , Niacinamida/farmacologia , Neoplasias Cutâneas/prevenção & controle , Raios Ultravioleta/efeitos adversos , Camundongos , Metformina/farmacologia , Metformina/uso terapêutico , Neoplasias Induzidas por Radiação/prevenção & controle , Neoplasias Induzidas por Radiação/etiologia , Quimioterapia Combinada , Antioxidantes/farmacologia , Antioxidantes/uso terapêutico , Dano ao DNA/efeitos dos fármacos , Dano ao DNA/efeitos da radiação , Feminino , Complexo Vitamínico B/uso terapêutico , Complexo Vitamínico B/farmacologia
19.
Nurs Womens Health ; 28(3): 222-226, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38527735

RESUMO

Hyperemesis gravidarum is the most common condition requiring hospital care for women during the first 20 weeks of pregnancy and may lead to malnutrition, dehydration, and vitamin deficiencies. Depletion of vitamins such as thiamine may result in the development of Wernicke encephalopathy, a severe neurological disorder that can increase the risk for mortality and morbidity for the mother and fetus. A lack of awareness regarding the relationship of hyperemesis gravidarum and Wernicke encephalopathy may result in delayed treatment and disease management. Glucose administration in the presence of thiamine deficiency may induce Wernicke encephalopathy; protocols are needed to ensure dextrose is used for women with hyperemesis gravidarum in times of prolonged vomiting and poor oral intake only after first administering thiamine. This article includes a discussion of best practices for thiamine supplementation with hyperemesis gravidarum and Wernicke encephalopathy.


Assuntos
Hiperêmese Gravídica , Deficiência de Tiamina , Tiamina , Encefalopatia de Wernicke , Humanos , Hiperêmese Gravídica/tratamento farmacológico , Hiperêmese Gravídica/complicações , Feminino , Gravidez , Encefalopatia de Wernicke/tratamento farmacológico , Encefalopatia de Wernicke/complicações , Tiamina/uso terapêutico , Deficiência de Tiamina/complicações , Deficiência de Tiamina/tratamento farmacológico , Suplementos Nutricionais , Adulto , Complexo Vitamínico B/uso terapêutico , Complexo Vitamínico B/administração & dosagem
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