Maternal selenium-supplementation at various stages of periconception period: influence on murine blastocyst morphology and implantation status

Mamon, Mark Anthony C.,Ramos, Gliceria B. Korean Society of Animal Sciences and Technology 2017 한국축산학회지 Vol.59 No.4

Background: Selenium is one of the trace minerals whose deficiency is known to lead to complications of female reproduction. The identified gaps in researches regarding selenium and pregnancy include optimizing the dosage of selenium supplementation, timing of supplementation, finding the best form and type of selenium, and selenium administration combined with other antioxidants. Hence, this study was conceptualized to address one of the identified gaps, that is, to find out the best timing of selenium administration around the time of pregnancy. Specifically, this study aimed to assess the effects of maternal Selenium-supplementation, administered at various stages of periconception period, on murine blastocyst morphology, percent occurrence of good quality blastocysts, and implantation status. Methods: ICR female mice were randomly assigned into the unsupplemented group (Group I) receiving basal diet without selenium, and treatment groups given with $3.0{\mu}g$ selenium-supplement per day during pregestation only (Group II), pregestation-throughout-gestation (Group III) and gestation only (Group IV). Both blastocyst morphology and implantation status were assessed. Results: The morphometric measurements of blastocysts appeared to be unaffected by selenium-supplementation at different stages of periconception. Selenium-supplementation at pregestation only (Group II) and gestation only (Group IV) produced higher percent occurrence of good quality blastocysts and lower percent pre-implantation loss than Group III. Among all the treatment groups, Group III (Selenium-supplementation during pregestation-to-gestation) yielded the lowest quality blastocysts and highest percent pre-implantation loss. Conclusion: Maternal selenium-supplementation during pregestation and gestation stages of the periconception period yielded a high percent occurrence of good quality blastocysts and pre-implantation success.

철분과 셀레늄의 섭취수준이 흰쥐의 망간 이용에 미치는 영향

전예숙,최미경 동아시아식생활학회 1997 동아시아식생활학회지 Vol.7 No.2

The purpose of this study was to investigate the effect of iron and selenium intakes on utilization of manganese in rats fed adequate, 2-fold, 4-fold iron and adequate, high selenium for 6 weeks. There was no difference feed intake across iron and selenium containing diet groups. Body weight gain in 2-fold iron and high selenium group(MFeHSe) was significantly higher than those in other groups. Serum iron level was increased with iron increment, and liver iron content was decreased with selenium supplementation. Selenium and manganese contents in tissues were decreased with iron increment. In the case of manganese balance, manganese excretion through feces was significantly increased as iron intake was increased. However, retention and apparent absorption of manganese were not significantly affected by dietary iron. From these results, it could be suggested that the supplementations of iron and selenium affected the manganese utilization. Therefore, it must be considered interaction with various minerals in micro-nutrient supplementations.

구리와 셀레늄 보충이 흰쥐의 체내 지질함량에 미치는 영향

전예숙,최미경 동아시아식생활학회 2002 동아시아식생활학회지 Vol.12 No.2

The purpose of this study was to investigate the effect of copper and selenium supplementation on lipid contents. Lipid levels in serum and liver were analyzed and compared in rats fed diet with 100, 200 and 400% of copper requirement and 100% and 1000% of selenium requirement for 6 weeks. Feed intake, body weight gain, and feed/weight were not significantly different among the groups. Serum cholesterol was the lowest in the copper-adequate group and serum LDL-cholesterol was significantly lower in the selenium-adequate group compared to the selenium-supplement group. Liver cholesterol was significantly elevated by the supplementation of copper and selenium. Summarizing these results, with the supplementation of copper and selenium, cholesterol levels in serum and liver increased in rats. Therefore, it could be suggested that adequate intake of minerals and well-balanced diet are more desirable than nutrient supplementation.

Exploring effects of organic selenium supplementation on pork loin: Se content, meat quality, antioxidant capacity, and metabolomic profiling during storage

정현영,Hyun Jung Lee,이학주,Yoo Yong Kim,Cheorun Jo 한국축산학회 2024 한국축산학회지 Vol.66 No.3

This research was conducted to study the effects of organic selenium (Se) supplements at different levels on pork loin quality during storage. Fifteen pork loins were procured randomly from three groups, Con (fed basal diet), Se15 (fed 0.15 ppm organic Se along with 0.10 ppm inorganic Se), and Se45 (fed 0.45 ppm organic Se along with 0.10 ppm inorganic Se). Each sample was analyzed for Se contents, antioxidant properties (glutathione peroxidase [GPx] activity, 2,2′-azinobis-[3-ethylbenzothiazoline-6-sulfonic acid] [ABTS] and 2,2-diphenyl-1-picrylhydrazyl [DPPH] radical scavenging activities, 2-thiobarbituric acid reactive substances), physicochemical properties (water holding capacity, pH, color), and metabolomic analysis during 14-day storage period. Se45-supplemented group showed significantly higher Se contents and GPx activity than the other groups throughout the storage period. However, other antioxidant properties were not significantly affected by Se supplementation. Selenium supplementation did not have an adverse impact on physicochemical properties. Nuclear Magnetic Resonance-based metabolomic analysis indicated that the selenium supply conditions were insufficient to induce metabolic change. These results suggest that organic Se (0.15 and 0.45 ppm) can accumulate high Se content in pork loins without compromising quality.

Micronutrient Deficiency Syndrome: Zinc, Copper and Selenium

이지현 대한소아소화기영양학회 2012 Pediatric gastroenterology, hepatology & nutrition Vol.15 No.3

Nutrients are defined as not only having nutritive values of participating in the metabolism and building the structures of cells but also being safe for human body. Nutrients are divided into two types, macronutrient and micronutrient, according to the proportion of the human body. Commonly, micronutrients include trace elements (trace mineral) and vitamins (complex organic molecules). It is difficult to demonstrate micronutrient deficiency because the symptoms are varied and laboratory analyses are limited. Since parenteral nutrition became an established therapy, micronutrient deficiency syndromes are being identified more frequently and emphasize the importance of a complete nutritional support. In this article, we review various specific trace element deficiency states such as zinc, copper, and selenium and briefly discuss the use of dietary supplements.

Selenium deficiency and supplementation in infants: a narrative review

( Ji Young Lee ),( Min Jung Kang ),( Hyun Jeong Kim ),( Sung Yun Suh ),( Yoon Sook Cho ),( Sook Hee An ) 한국정맥경장영양학회 2023 한국정맥경장영양학회지 Vol.15 No.1

Purpose: This review aims to provide an overview of the factors and clinical outcomes associated with selenium deficiency and the guidelines on the optimal selenium supplementation in infants. Current concept: Selenium is a cofactor required to maintain the activity of glutathione peroxidase and is an essential trace element in the human body. Selenium is involved in many stages of oxidative injury within the human body. In severe cases, selenium deficiency may lead to cardiomyopathy. Particularly in infants, the risk factors for selenium deficiency are preterm birth and long-term parenteral nutrition. Several studies have been conducted on the relationship between selenium deficiency and bronchopulmonary dysplasia, retinopathy of prematurity, and sepsis, all of which are common diseases in preterm infants. In the past, 2-3 mcg/kg/day of intravenous selenium supplementation was recommended in preterm infants with selenium deficiency. However, recent studies have suggested that only 2-3 mcg/kg/day can prevent further decreases of selenium level in the blood of preterm infants, and that higher supplementation of 1.5-4.5 mcg/kg/day or 7 mcg/kg/day is necessary to reach the level of healthy infants at term. The recommended dose of selenium through enteral nutrition for preterm infants is 1.3-4.5 mcg/kg/day or 5-10 mcg/kg/day, depending on the guideline. Conclusion: Adequate selenium administration is required for adequate nutritional support in infants to prevent selenium deficiency, and more studies should be conducted to establish dosing guidelines considering risk factors in preterm infants.

Effect of Selenium Supplementation on Biochemical Markers of Women with Polycystic Ovarian Syndrome: A Systematic Review

Robab Kazempour,Parvin Abedi,Shahla Faal Siahkal,Foruzan Sharifipour3,Maryam Zahedian 한국식품영양과학회 2023 Preventive Nutrition and Food Science Vol.28 No.2

Polycystic ovary syndrome (PCOS) is a widespread endocrine disorder among fertile women and may be induced by nutritional deficiencies. In this study, we assess the impact of selenium supplementation (SS) on biochemical markers in women with PCOS. To gather relevant literature, we searched the Web of Science, Cochrane Library, Scopus, Embase, and MEDLINE databases from inception up to July 24, 2022. Subsequently, we included all published full-text randomized clinical trials examining the effects of SS versus placebo on biochemical changes in women with PCOS. Review Manager 5.3 was used to collect and analyze data and assess the risk of bias. Seven articles, comprising 413 women, were ultimately involved in the study. According to the results, SS could increase the level of quantitative insulin sensitivity check index [standardized mean difference (SMD)=0.34, 95% confidence interval (CI)=0.04∼0.65], total antioxidant capacity (SMD=0.89 mmol/L, 95% CI=0.52∼1.26), and glutathione (SMD=1.00 mmol/L, 95% CI=0.22∼1.78). Conversely, SS could decrease triglyceride, cholesterol, fasting plasma glucose, insulin, and the homeostasis model of assessment-insulin resistance levels compared with the placebo. Furthermore, there were no significant differences regarding sex hormone-binding globulin level, testosterone level, malondialdehyde, and body mass index between the two groups. In addition, the results suggest that SS improves biochemical markers in women with PCOS and thus is recommended for treating biochemical disorders among these women in addition to standard treatment.

Impact of Selenium Supplementation in Neutropenia and Immunoglobulin Production in Childhood Cancer Patients

Katya Cristina Rocha,Maria Luiza dos Santos Vieira,Registila Libania Beltrame,Jairo Cartum,Sarah Isabel P. M. do N. Alves,Ligia Ajaime Azzalis,Virginia Berlanga Campos Junqueira,Edimar Cristiano Perei 한국식품영양과학회 2016 Journal of medicinal food Vol.19 No.6

Essential to human health, selenium (Se) has enzymatic functions of fundamental importance to human biology due to its effects on DNA damage repair, its antioxidant properties, and cancer prevention. The best studied relationships between Se and the immune system is its role in the functions of neutrophils and of lymphocytes. Despite these observations, it is not yet clear by which mechanism Se is able to modify the immune status. This was a double-blind, crossover study: Group 1 received Se and Group 2 received placebo (30 days). After this, Group 1 received placebo and Group 2 received Se (30 days). Every 30 days, blood samples were collected for white blood cell count, red blood cell count, and Ig level measurement (IgA, IgG, IgE, IgM). Of the 36 patients, 17 were suffering from leukemia/lymphomas (LL) and 19 from solid tumors (ST). In the ST group’s leukogram, a significant increase in neutrophils was observed after Se usage (P = .0192). During the analyzed period, Se minimized the triggering of neutropenia cases in both groups. IgA and IgG levels in ST patients were significantly higher than those identified in LL patients after Se usage (P = .0051 and P = .0055). For IgA, a significant increase in its production, after Se usage, was observed in the ST group when compared to the LL (P = .0011). The same did not occur to the IgM and IgE immunoglobulins. In our study, the supplementation with Se reduced the neutropenic cases (LL and ST patients) and reduced IgG and IgA levels in LL and increased in ST group.

철분의 과잉섭취시 셀레늄 섭취수준이 철분과잉 축적에 대한 예방효과에 관한 연구

전예숙(Jun Ye-Sook) 韓國營養學會 1997 Journal of Nutrition and Health Vol.30 No.3