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1.
Eur J Med Res ; 28(1): 377, 2023 Sep 26.
Artigo em Inglês | MEDLINE | ID: mdl-37752534

RESUMO

BACKGROUND: Although dietary intake is believed to be associated with constipation, there is currently a lack of research exploring the relationship between niacin intake and constipation. Therefore, the aim of this study is to investigate the association between niacin intake in adults and constipation using data from the National Health and Nutrition Examination Survey (NHANES). METHODS: This study included 5170 participants (aged ≥ 20 years) from the NHANES survey conducted between 2009 and 2010. Participants who reported experiencing constipation "always", "most of the time", or "sometimes" in the past 12 months were defined as constipation cases. The daily niacin intake was obtained from dietary recall and dietary supplement recalls of the patients. Weighted multivariate logistic regression analysis, restricted cubic spline regression, subgroup analysis, and interaction analysis were used to assess the correlation between niacin intake and constipation. RESULTS: After adjustment for covariates, the multivariate logistic regression model showed that low niacin intake was associated with a higher risk of constipation (Model 1: OR: 0.917, 95% CI 0.854-0.985, P = 0.023; Model 2: OR: 0.871, 95% CI 0.794-0.955, P = 0.01). After dividing niacin intake into four groups, a daily intake of 0-18 mg niacin was associated with a higher risk of constipation (Model 1: OR: 1.059, 95% CI 1.012-1.106, P = 0.019; Model 2: OR: 1.073, 95% CI 1.025-1.123, P = 0.013). The restricted cubic spline regression analysis also showed a non-linear relationship between niacin intake and the risk of constipation. CONCLUSION: The findings of this study suggested that daily intake of 0-18 mg of niacin was associated with a higher risk of constipation compared to a daily intake of 18-27 mg of niacin.


Assuntos
Niacina , Humanos , Adulto , Niacina/efeitos adversos , Inquéritos Nutricionais , Constipação Intestinal/induzido quimicamente , Constipação Intestinal/epidemiologia , Suplementos Nutricionais/efeitos adversos , Modelos Logísticos
2.
S D Med ; 76(7): 311-313, 2023 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-37733962

RESUMO

INTRODUCTION: Increasing and easy availability of so-called natural/herbal supplements pose the unique challenge of identifying associated side effects, including arrhythmias in otherwise-healthy individuals. CASE PRESENTATION: A 25-year-old female patient presented to the emergency department with fatigue and lightheadedness. The electrocardiogram showed complete AV block with a junctional escape rhythm at 55 beats per minute with QT prolongation (542ms). One week ago, she started to use a herbal medication (Muscle Eze Advanced) for muscle cramps after workouts. Extensive cardiac testing, including complete blood count, complete metabolic panel, TSH, transthoracic echocardiography, urine drug analysis, Lyme antibody were negative. Normal sinus rhythm was restored spontaneously within 1 day of discontinuing the herbal medication. PR and corrected QT intervals returned to baseline over the next two weeks. CONCLUSION: Muscle Eze Advanced consists of seven ingredients, including Melissa officinalis and Valeriana officinalis that have negative chronotropic, negative dromotrophic and QT prolonging effects. Recognizing the association between certain over-the-counter supplements and brady-arrhythmias may circumvent need for permanent pacemakers - an important consideration especially in the young.


Assuntos
Bloqueio Atrioventricular , Efeitos Colaterais e Reações Adversas Relacionados a Medicamentos , Feminino , Humanos , Adulto , Bloqueio Atrioventricular/induzido quimicamente , Bloqueio Atrioventricular/diagnóstico , Suplementos Nutricionais/efeitos adversos , Ecocardiografia , Eletrocardiografia
3.
JAMA ; 330(5): 460-466, 2023 08 01.
Artigo em Inglês | MEDLINE | ID: mdl-37526714

RESUMO

Importance: Neural tube defects are among the most common birth defects in the US. Objective: To review new evidence on the benefits and harms of folic acid supplementation for the prevention of neural tube defects to inform the US Preventive Services Task Force. Evidence Review: Sources included PubMed, Cochrane Library, Embase, and trial registries from July 1, 2015, through July 2, 2021; references; and experts, with surveillance through February 10, 2023. Two investigators independently reviewed English-language randomized studies and nonrandomized cohort studies in very highly developed countries that focused on the use of folic acid supplementation for the prevention of neural tube defect-affected pregnancies; methodological quality was dually and independently assessed. Findings: Twelve observational studies (reported in 13 publications) were eligible for this limited update (N = 1 244 072). Of these, 3 studies (n = 990 372) reported on the effect of folic acid supplementation on neural tube defects. For harms, 9 studies were eligible: 1 randomized clinical trial (n = 431) reported on variations in twin delivery, 7 observational studies (n = 761 125) reported on the incidence of autism spectrum disorder, and 1 observational study (n = 429 004) reported on maternal cancer. Two cohort studies and 1 case-control study newly identified in this update reported on the association between folic acid supplementation and neural tube defects (n = 990 372). One cohort study reported a statistically significant reduced risk of neural tube defects associated with folic acid supplementation taken before pregnancy (adjusted relative risk [aRR], 0.54 [95% CI, 0.31-0.91]), during pregnancy (aRR, 0.62 [95% CI, 0.39-0.97]), and before and during pregnancy (aRR, 0.49 [95% CI, 0.29-0.83]), but this association occurred for only the later of 2 periods studied (2006-2013 and not 1999-2005). No other statistically significant benefits were reported overall. No study reported statistically significant harms (multiple gestation, autism, and maternal cancer) associated with pregnancy-related folic acid exposure. Conclusions and Relevance: New evidence from observational studies provided additional evidence of the benefit of folic acid supplementation for preventing neural tube defects and no evidence of harms related to multiple gestation, autism, or maternal cancer. The new evidence was consistent with previously reviewed evidence on benefits and harms.


Assuntos
Suplementos Nutricionais , Ácido Fólico , Defeitos do Tubo Neural , Complicações na Gravidez , Feminino , Humanos , Gravidez , Transtorno do Espectro Autista/induzido quimicamente , Suplementos Nutricionais/efeitos adversos , Ácido Fólico/administração & dosagem , Ácido Fólico/efeitos adversos , Ácido Fólico/uso terapêutico , Defeitos do Tubo Neural/etiologia , Defeitos do Tubo Neural/prevenção & controle , Ensaios Clínicos Controlados Aleatórios como Assunto , Complicações na Gravidez/etiologia , Complicações na Gravidez/prevenção & controle , Risco , Cuidado Pré-Concepcional , Cuidado Pré-Natal
4.
Trials ; 24(1): 501, 2023 Aug 07.
Artigo em Inglês | MEDLINE | ID: mdl-37550760

RESUMO

BACKGROUND: Thyroid cancer is a very damaging disease. The most common treatment for this disease includes thyroidectomy and then using radioactive iodine (RAI). RAI has many side effects, including a decrease in salivary secretions, followed by dry mouth and oral and dental injuries, as well as increased inflammation and oxidative stress. Selenium can be effective in these patients by improving inflammation and oxidative stress and by modulating salivary secretions. So far, only one clinical trial has investigated the effect of selenium on thyroid cancer patients treated with radioiodine therapy (RIT) conducted on 16 patients; considering the importance of this issue, to show the potential efficacy of selenium in these patients, more high-quality trials with a larger sample size are warranted. METHODS: This is a parallel double-blind randomized controlled clinical trial that includes 60 patients aged 20 to 65 years with papillary thyroid cancer (PTC) treated with RAI and will be conducted in Seyyed al-Shohada Center, an academic center for referral of patients to receive iodine, Isfahan, Iran. Thirty patients will receive 200 µg of selenium for 10 days (3 days before to 6 days after RAI treatment) and another 30 patients will receive a placebo for the same period. Sonographic findings of major salivary glands, salivary secretions, and sense of taste will be evaluated before and 6 months after 10-day supplementation. DISCUSSION: Due to its anti-inflammatory and antioxidant effects, as well as improving salivary secretions, selenium may improve the symptoms of thyroid cancer treated with radioactive iodine. In past studies, selenium consumption has not reduced the therapeutic effects of radiation therapy, and at a dose of 300 to 500 µg/day, it has not had any significant side effects in many types of cancer under radiation therapy. TRIAL REGISTRATION: Iranian Registry of Clinical Trials IRCT20201129049534N6 . Registered on 16 September 2021.


Assuntos
Selênio , Neoplasias da Glândula Tireoide , Humanos , Câncer Papilífero da Tireoide/radioterapia , Câncer Papilífero da Tireoide/induzido quimicamente , Câncer Papilífero da Tireoide/tratamento farmacológico , Radioisótopos do Iodo/efeitos adversos , Selênio/uso terapêutico , Neoplasias da Glândula Tireoide/diagnóstico por imagem , Neoplasias da Glândula Tireoide/radioterapia , Neoplasias da Glândula Tireoide/tratamento farmacológico , Irã (Geográfico) , Glândulas Salivares/diagnóstico por imagem , Glândulas Salivares/efeitos da radiação , Suplementos Nutricionais/efeitos adversos , Inflamação/tratamento farmacológico , Tireoidectomia , Ensaios Clínicos Controlados Aleatórios como Assunto
5.
Nutrients ; 15(15)2023 Jul 27.
Artigo em Inglês | MEDLINE | ID: mdl-37571285

RESUMO

Molybdenum is an essential trace element for human health and survival, with molybdenum-containing enzymes catalysing multiple reactions in the metabolism of purines, aldehydes, and sulfur-containing amino acids. Recommended daily intakes vary globally, with molybdenum primarily sourced through the diet, and supplementation is not common. Although the benefits of molybdenum as an anti-diabetic and antioxidant inducer have been reported in the literature, there are conflicting data on the benefits of molybdenum for chronic diseases. Overexposure and deficiency can result in adverse health outcomes and mortality, although physiological doses remain largely unexplored in relation to human health. The lack of knowledge surrounding molybdenum intake and the role it plays in physiology is compounded during pregnancy. As pregnancy progresses, micronutrient demand increases, and diet is an established factor in programming gestational outcomes and maternal health. This review summarises the current literature concerning varied recommendations on molybdenum intake, the role of molybdenum and molybdoenzymes in physiology, and the contribution these play in gestational outcomes.


Assuntos
Complicações na Gravidez , Oligoelementos , Gravidez , Feminino , Humanos , Placenta , Micronutrientes , Molibdênio , Suplementos Nutricionais/efeitos adversos , Complicações na Gravidez/induzido quimicamente , Resultado da Gravidez
6.
Trials ; 24(1): 489, 2023 Aug 01.
Artigo em Inglês | MEDLINE | ID: mdl-37528450

RESUMO

BACKGROUND: Obesity is a multifaceted disease characterized by an abnormal accumulation of adipose tissue. Growing evidence has proposed microbiota-derived metabolites as a potential factor in the pathophysiology of obesity and related metabolic conditions over the last decade. As one of the essential metabolites, butyrate affects several host cellular mechanisms related to appetite sensations and weight control. However, the effects of butyrate on obesity in humans have yet to be studied. Thus, the present study was aimed to evaluate the effects of sodium butyrate (SB) supplementation on the expression levels of peroxisome proliferator activated-receptor (PPAR) gamma coactivator-1α (PGC-1α), PPARα and uncoupling protein 1 (UCP1) genes, serum level of glucagon-like peptide (GLP1), and metabolic parameters, as well as anthropometric indices in obese individuals on a weight loss diet. METHODS: This triple-blind randomized controlled trial (RCT) will include 50 eligible obese subjects aged between 18 and 60 years. Participants will be randomly assigned into two groups: 8 weeks of SB (600 mg/day) + hypo-caloric diet or placebo (600 mg/day) + hypo-caloric diet. At weeks 0 and 8, distinct objectives will be pursued: (1) PGC-1α, PPARα, and UCP1 genes expression will be evaluated by real-time polymerase chain reaction; (2) biochemical parameters will be assayed using enzymatic methods; and (3) insulin and GLP1 serum level will be assessed by enzyme-linked immunosorbent assay kit. DISCUSSION: New evidence from this trial may help fill the knowledge gap in this realm and facilitate multi-center clinical trials with a substantially larger sample size. TRIAL REGISTRATION: Iranian Registry of Clinical Trials: IRCT20190303042905N2 . Registered on 31 January 2021.


Assuntos
Dieta Redutora , PPAR alfa , Humanos , Adolescente , Adulto Jovem , Adulto , Pessoa de Meia-Idade , PPAR alfa/genética , PPAR alfa/metabolismo , PPAR alfa/uso terapêutico , Ácido Butírico/uso terapêutico , Peptídeo 1 Semelhante ao Glucagon/uso terapêutico , Proteína Desacopladora 1/genética , Fatores de Transcrição , Obesidade/diagnóstico , Obesidade/tratamento farmacológico , Obesidade/genética , Suplementos Nutricionais/efeitos adversos , Ensaios Clínicos Controlados Aleatórios como Assunto
7.
Kidney Int ; 104(4): 698-706, 2023 10.
Artigo em Inglês | MEDLINE | ID: mdl-37541585

RESUMO

Vitamin D supplements have long been advocated for people with chronic kidney disease based on data from observational studies among the general population and people with chronic kidney disease. These data consistently suggested that higher circulating concentrations of 25-hydroxyvitamin D are associated with improved fracture, cardiovascular, cancer, and mortality outcomes. In the past few years, large clinical trials have been conducted to assess the effects of vitamin D supplements on a range of clinically relevant outcomes. Most of these studies were performed in the general population, but they also enrolled people with chronic kidney disease. Virtually all of these trials were negative and contradicted the observational data. In this review, the key observational data and clinical trials are summarized, and potential explanations for the discrepancies between these studies are discussed.


Assuntos
Fraturas Ósseas , Insuficiência Renal Crônica , Humanos , Vitamina D/uso terapêutico , Vitaminas/uso terapêutico , Suplementos Nutricionais/efeitos adversos , Insuficiência Renal Crônica/complicações , Insuficiência Renal Crônica/tratamento farmacológico
8.
Photodiagnosis Photodyn Ther ; 43: 103750, 2023 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-37579909

RESUMO

BACKGROUND: To determine the effects of protein supplement (whey protein powder (PP)) on retinal, choroidal and optic nerve head (ONH) microstructure and microvascular morphology in healthy bodybuilders. METHODS: This cross-sectional study included 23 male adults (consumers, 23 right eyes) who had been routinely consuming whey PP for bodybuilding purposes for ≥ 3 months, and 21 age- and gender-matched healthy volunteers (non-consumers, 21 right eyes) who also attended the gym but did not consume any nutritional supplements. Participants underwent standard ocular exams, enhanced depth imaging optical coherence tomography (EDI OCT), and optical coherence tomography angiography (OCTA) after ≥ 8 h of rest and fasting. RESULTS: Whey PP was consumed for a median of 9.5 (6-12) months. Whey PP consumers had a median age of 22 (21-22) years, while non-consumers had 21 (20-22) years (p = 0.067). Whey PP consumers had greater microstructural thickness than non-consumers, with subfoveal choroidal thickness (301.40 ± 38.91 versus 278.12 ± 33.58 µm; p = 0.035) being significantly different but not central macular thickness (270.55 ± 24.60 versus 265.85 ± 12.44 µm; p = 0.402). Despite a non-significant difference in superficial and deep capillary plexus vascular densities (VDs), whey PP consumers had relatively lower VDs than non-consumers in all macular regions (p > 0.05). Despite this, whey PP consumers displayed greater ONH VDs, as well as higher global RNFL thickness (116.75 ± 10.41 versus 114.50 ± 11.70 µm) than non-consumers (p > 0.05). CONCLUSION: Protein supplements, particularly whey PPs, appear to be associated with different changes in the retina and choroid, as well as ONH microstructural and microvascular morphology, implying that paying attention to these clinical aspects when performing ocular tests in bodybuilders who consume nutritional supplements could be critical.


Assuntos
Corioide , Suplementos Nutricionais , Disco Óptico , Retina , Proteínas do Soro do Leite , Humanos , Masculino , Adulto Jovem , Corioide/diagnóstico por imagem , Corioide/patologia , Estudos Transversais , Disco Óptico/diagnóstico por imagem , Disco Óptico/patologia , Retina/diagnóstico por imagem , Retina/patologia , Tomografia de Coerência Óptica/métodos , Proteínas do Soro do Leite/administração & dosagem , Proteínas do Soro do Leite/efeitos adversos , Suplementos Nutricionais/efeitos adversos , Atletas
9.
J Nutr Sci Vitaminol (Tokyo) ; 69(3): 206-219, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37394426

RESUMO

The present paper first proposes a method for ensuring the safety of commercial herbal supplements, termed the suggested daily intake-based safety evaluation (SDI-based safety evaluation). This new method was inspired as a backward analog of the acceptable daily intake (ADI) derivation from the no observed adverse effect level (NOAEL), the basis of food additive risk analysis; namely, rats are dosed with individual herbal supplement products at the SDI for human use multiplied by 100 (the usual uncertainty factor value) per body weight for 8 d. The primary endpoint is the sign of adverse effects on liver, especially gene expression of cytochrome P450 (CYP) isoforms. The proposed method was then applied to three butterbur (Petasites hybridus) products without pyrrolizidine alkaloids but lacking clear safety information. Results showed that two oily products markedly enhanced the mRNA expression of CYP2B (>10-fold) and moderately enhanced that of CYP3A1 (<4-fold) with liver enlargement. These products also caused the renal accumulation of alpha 2-microglobulin. One powdery product showed no significant effect on liver and kidney. The large difference in effects of products was due to the difference in chemical composition revealed by liquid chromatography-mass spectroscopy. The oily and the powdery products required attention in terms of safety and effectiveness, respectively. Finally, the results from the SDI-based safety evaluation of butterbur and other herbal supplement products were grouped into four categories and cautionary notes were discussed. The SDI-based safety evaluation of their products by herbal supplement operators would contribute to safe and secure use by consumers.


Assuntos
Petasites , Humanos , Ratos , Animais , Petasites/química , Fígado , Suplementos Nutricionais/efeitos adversos , Extratos Vegetais/efeitos adversos , Sistema Enzimático do Citocromo P-450/genética
10.
Nutr Metab Cardiovasc Dis ; 33(9): 1633-1646, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37419751

RESUMO

AIMS: This systematic review and dose-response meta-analysis was conducted to summarize data from available clinical trials on the effects of whey protein (WP) supplementation on blood pressure (BP) in adults. DATA SYNTHESIS: A comprehensive literature search was conducted in the electronic databases PubMed, Web of Science, ProQuest, Embase, and SCOPUS from inception to October 2022. Weighted mean differences (WMD) and 95% confidence intervals (CI) were calculated to assess pooled effect sizes. Heterogeneity between studies was assessed using the Cochran's Q test and I2. Subgroup analysis was performed to assess potential sources of heterogeneity. The dose-response relationship was assessed using fractional polynomial modeling. Of the 2,840 records, 18 studies with 1,177 subjects were included. Pooled analysis showed that whey protein supplementation resulted in a significant reduction in systolic blood pressure (WMD: -1.54 mmHg; 95% CI: -2.85 to -0.23, p = 0.021), with significant heterogeneity between studies (I2 = 64.2%, p < 0.001), but not for diastolic blood pressure (DBP) (WMD: -0.27 mmHg; 95% CI: -1.14, 0.59, p = 0.534) with high heterogeneity between studies (I2 = 64.8%, p < 0.001). However, WP supplementation significantly reduced DBP at a dose of ˃30 g/day, in RCTs that used WP isolate powder for their intervention, in sample sizes ≤100, in studies with an intervention duration of ≤10 weeks, and in those studies that were conducted in patients with hypertension and had participants with a BMI of 25-30 kg/m2. CONCLUSION: This meta-analysis demonstrated that WP intake significantly reduced SBP levels. Further large-scale studies are needed to specify the exact mechanism, and optimal dosage of WP supplementation to obtain a beneficial effect on BP.


Assuntos
Hipertensão , Adulto , Humanos , Pressão Sanguínea , Proteínas do Soro do Leite/efeitos adversos , Ensaios Clínicos Controlados Aleatórios como Assunto , Hipertensão/diagnóstico , Hipertensão/tratamento farmacológico , Bases de Dados Factuais , Suplementos Nutricionais/efeitos adversos
11.
Epilepsia ; 64(9): 2244-2248, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37452793

RESUMO

Women using antiseizure medication in pregnancy are often advised to use high doses of folic acid supplements (1mg to 5 mg) to reduce the risk of teratogenicity. Recently, we published a report showing an association between maternal prescription fill of high dose folic acid in relation to pregnancy and childhood cancer in the offspring. The report has sparked a debate about which dose of folic acid that should be recommended in pregnancy in women in need of antiseizure medication. In this Commentary, we explain our findings and the method used in our report, and answer recent questions that have emerged.


Assuntos
Ácido Fólico , Neoplasias , Gravidez , Feminino , Humanos , Criança , Ácido Fólico/efeitos adversos , Suplementos Nutricionais/efeitos adversos , Risco , Família , Neoplasias/induzido quimicamente , Neoplasias/epidemiologia , Neoplasias/tratamento farmacológico
12.
Adv Nutr ; 14(5): 973-982, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37487817

RESUMO

In 1997, the US Institute of Medicine (IOM) dietary reference intakes (DRI) Committee established a magnesium (Mg) tolerable upper intake level (UL) for adults of 350 mg/d from supplemental intake alone. Diarrhea was the limiting factor. The safety of oral Mg dietary supplements exceeding the UL is currently in debate. Increasing the UL may result in more Mg supplementation, decreasing the prevalence of undernutrition for this nutrient and thus providing additional protection against numerous chronic diseases. This perspective aims to show that more recent and comprehensive evidence-based data on the occurrence of diarrhea indicate that the Mg UL for adults should be re-evaluated. To update the literature base to re-evaluate setting the Mg UL, a PubMed search was conducted to identify intervention studies published between 1997 and 2022 that used single-ingredient Mg products reporting a priori diarrhea adverse events among adults. The Food and Drug Administration Center for Food Safety and Adverse Event Reporting System (CAERS) was also searched for adverse events caused by Mg supplementation. The PubMed search identified 10 studies, including 5 meta-analyses and 5 randomized controlled trials, that met the search criteria. Seven studies (Mg intakes of 128-1200 mg/d) found no significant differences in diarrhea occurrence between the intervention and control groups. One meta-analysis found only minor differences in gastrointestinal disturbances between groups given placebo versus 520 mg Mg/d, but withdrawals were not significantly different between groups. Another meta-analysis found that 3 of 13 studies (120-973 mg/d) reported diarrhea that led to study withdrawal, but the treatment arm was not specified in 2 studies. The CAERS search, when limited to single-ingredient suspect Mg products, found only 40 attributable cases of gastrointestinal adverse events. Only one-third of these 40 cases noted a complaint of diarrhea. These updated data indicate that doses above the current UL for Mg supplements can be consumed without adverse events.


Assuntos
Magnésio , Desnutrição , Adulto , Humanos , Diarreia/induzido quimicamente , Diarreia/epidemiologia , Diarreia/prevenção & controle , Suplementos Nutricionais/efeitos adversos , Trato Gastrointestinal , Metanálise como Assunto
14.
Nefrología (Madrid) ; 43(3): 351-359, may.-jun. 2023. graf, tab
Artigo em Inglês | IBECS | ID: ibc-220040

RESUMO

Background: Oxidative stress increases oxidizability of apolipoprotein-B containing lipoproteins and decreases paraoxonase (PON) activity in hemodialysis (HD) patients and plays an important part in the development of atherosclerotic cardiovascular diseases. In HD patients, plasma ascorbic acid (AA) levels are decreased either due to the loss by hemodialysis membranes or due to malnutrition and contribute to the imbalance of antioxidant defense mechanisms. We hypothesized that long-term ascorbic acid (AA) supplementation recovers oxidizability of lipoproteins in HD patients by reinforcing PON activity. Methods: Twenty-nine adult patients were treated with 100mg and 500mg AA at the end of each HD session thrice a week for two consecutive 16 weeks-periods, respectively. Blood samples were obtained before the first HD session and prior to the first HD sessions following the 100mg AA-supplemented and the 500mg AA-supplemented periods. Results: PON activities were significantly increased after 100mg (p<0.05) and 500mg AA (p<0.001) supplementation periods compared to the basal level. Apo-B lipoprotein oxidizability (Δ-MDA) was significantly decreased after 500mg AA supplementation compared to both basal (p<0.05) and 100mg AA supplementation periods (p<0.05). Plasma AA concentrations were negatively correlated with Δ-MDA levels (R=−0.327; p<0.01). Conclusion: Our results suggest that long-term parenteral 500mg AA supplementation improves PON activity alleviating apo B-containing lipoproteins oxidizability in HD patients. (AU)


Antecedentes: El estrés oxidativo aumenta la susceptibilidad a la oxidación de las apolipoproteínas-B que contienen lipoproteínas y reduce la actividad de paraoxonasa (PON) en pacientes de hemodiálisis (HD) formando un papel importante en el desarrollo de enfermedades arterioescleróticas cardiovasculares. En pacientes de HD, los niveles de ácido ascórbico (AA) plasmático disminuyen debido a la pérdida por membranas de hemodiálisis o por desnutrición, y contribuye al desequilibrio de los mecanismos de defensa antioxidantes. Nuestra hipótesis es que a largo plazo la suplementación con AA recupera la susceptibilidad a la oxidación de las lipoproteínas en pacientes de HD al reforzar la actividad de PON. Métodos: Se trataron 29 pacientes adultos con 100 y 500mg de AA al final de cada sesión de HD/3 veces por semana/durante 2 períodos consecutivos de 16 semanas, respectivamente. Se obtuvieron muestras de sangre antes de la primera sesión de HD y previo a las primeras sesiones de HD luego de los 100mg suplementados con AA y los periodos suplementados con 500mg de AA. Resultados: Las actividades de PON aumentaron significativamente después de los periodos de suplementación de 100mg (p<0,05) y de 500mg de AA (p<0,001) comparados con el nivel base. La susceptibilidad a la oxidación de la lipoproteína apoB (Δ-MDA) disminuyó significativamente luego de la suplementación de 500mg de AA en comparación con períodos de valores base (p<0,05) y los de 100mg de AA (p<0,05). La correlación entre las concentraciones de plasma AA y los niveles de Δ-MDA resultó negativa (R=−0,327; p<0,01). Conclusión: Nuestros resultados sugieren que la suplementación parenteral a largo plazo de 500mg de AA mejora la actividad de PON mitigando la susceptibilidad a la oxidación de las lipoproteínas que contienen apoB en pacientes en HD. (AU)


Assuntos
Humanos , Masculino , Feminino , Adulto Jovem , Adulto , Pessoa de Meia-Idade , Idoso , Estresse Oxidativo , Ácido Ascórbico , Suplementos Nutricionais/efeitos adversos , Diálise Renal , Apolipoproteínas B , Arildialquilfosfatase
18.
Patient Educ Couns ; 114: 107824, 2023 09.
Artigo em Inglês | MEDLINE | ID: mdl-37290282

RESUMO

OBJECTIVE: To assess knowledge, attitudes, and practices surrounding dietary supplements (DS) among California health care professionals (HCPs) and assess factors contributing to the frequency with which HCPs discuss DS with patients. METHODS: In this cross-sectional study, an online questionnaire was distributed to HCPs in California from December 2021-April 2022 via professional membership email listservs. RESULTS: Among 514 HCPs, overall knowledge of DS did not vary significantly by professional group, and 90% had received little to no DS education. Pharmacists (OR = 0.328, p = 0.0001) and those with less reported DS education (OR = 0.58, p = 0.0045; OR = 0.075, p = 0.0097) had a decreased likelihood of initiating conversations about DS more frequently. Females (OR = 2.5, p < 0.0001) and those with a higher knowledge score (OR = 1.2, p = 0.0297) had an increased likelihood of initiating conversations about DS more frequently. CONCLUSIONS: HCPs acknowledge the clinical significance of DS adulteration and would benefit from additional informational resources to reduce the adverse effects associated with adulterated supplements. PRACTICE IMPLICATIONS: HCPs initiate more conversations about DS use when they are more informed and will gain from staying up to date on DS-related information to encourage more patient communication.


Assuntos
Conhecimentos, Atitudes e Prática em Saúde , Pessoal de Saúde , Feminino , Humanos , Estudos Transversais , Inquéritos e Questionários , Suplementos Nutricionais/efeitos adversos , California
19.
Zhongguo Zhong Yao Za Zhi ; 48(9): 2552-2556, 2023 May.
Artigo em Chinês | MEDLINE | ID: mdl-37282884

RESUMO

With the increase in the medical level, the improvement of adverse drug reaction(ADR) monitoring systems, and the enhancement of public awareness of safe medication, drug safety incidents have been frequently reported. Drug-induced liver injury(DILI), especially liver injury attributed to herbal and dietary supplements(HDS), has globally attracted high attention, bringing great threats and severe challenges to the people for drug safety management such as clinical medication and medical supervision. Consensus on drug-induced liver injury had been published by the Council for International Organizations of Medical Sciences(CIOMS) in 2020. In this consensus, liver injury attributed to HDS was included in a special chapter for the first time. The hot topics, including the definition of HDS-induced liver injury, epidemiological history, potential risk factors, collection of related risk signals, causality assessment, risk prevention, control and management were discussed from a global perspective. Based on the previous works, some experts from China were invited by CIOMS to undertake the compilation of this chapter. Meanwhile, a new causality assessment in DILI based on the integrated evidence chain(iEC) method was widely recognized by experts in China and abroad, and was recommended by this consensus. This paper briefly introduced the main contents, background, and characteristics of the Consensus on drug-induced liver injury. Significantly, a brief interpretation was illustrated to analyze the special highlights of Chapter 8, "Liver injury attributed to HDS", so as to provide practical references for the medical staff and the researchers who worked on either Chinese or Western medicine in China.


Assuntos
Doença Hepática Induzida por Substâncias e Drogas , Humanos , Consenso , Doença Hepática Induzida por Substâncias e Drogas/epidemiologia , Doença Hepática Induzida por Substâncias e Drogas/etiologia , Fatores de Risco , Suplementos Nutricionais/efeitos adversos
20.
Nutrients ; 15(12)2023 Jun 08.
Artigo em Inglês | MEDLINE | ID: mdl-37375577

RESUMO

Moringa is a plant commonly used for its medical properties. However, studies have shown contradictory results. The aim of this review is to evaluate the possible association between the use of Moringa during pregnancy and breastfeeding in relation to the health status of both the mother and the baby. A search of the PubMed and EMBASE databases on the literature published during the period 2018-2023 was conducted up until March 2023. The population/exposure/comparison/outcome (PECO) approach was used to select studies on pregnant women, mother-child pairs, and the use of Moringa. Out of the 85 studies initially identified, 67 were excluded, leaving 18 for full-text evaluation. After assessment, 12 were finally included in the review. In the articles included in this work, Moringa is administered during pregnancy or in the postnatal period in the form of leaf powder (MOLP), as a leaf extract (MLE), as an ingredient associated with other supplements or in preparations. It appears to influence several variables during pregnancy and in the postnatal period such as the mother's haematochemical profile, milk production, the child's socio-personal development and the incidence of morbidity during the first 6 months of life. None of the studies analysed reported contraindications to the use of the supplement during pregnancy and lactation.


Assuntos
Anemia , Moringa oleifera , Humanos , Feminino , Gravidez , Aleitamento Materno , Moringa oleifera/química , Suplementos Nutricionais/efeitos adversos , Lactação , Folhas de Planta , Extratos Vegetais/efeitos adversos
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