Association of insulin resistance and lipid profile with serum T3, T4, and TSH in patients with hypothyroidism

Background: Hypothyroidism is a common endocrine derangement met with in clinical practice. Deficiency of thyroid hormones can have a significant effect on lipid and carbohydrate metabolism. Aims and Objectives: The aim of the study was to study the association of insulin resistance and lipid profile with serum triiodothyronine (T3), tetraiodothyronine (T4), and thyroid-stimulating hormone (TSH) in hypothyroidism. Materials and Methods: A comparative cross-sectional study was conducted in a tertiary care hospital after obtaining clearance from the Institutional Ethics Committee. Thirty primary hypothyroid subjects were selected as cases based on their TSH values (>4 uIU/mL) and thirty normal subjects as controls after proper exclusion and after getting the informed consent. Their fasting plasma glucose levels, lipid profile, and serum T3, T4, TSH were measured. Homeostasis model Assessment using OXFORD HOMA 2 CALCULATOR was used to determine the insulin resistance (HOMA-IR). Results: The mean values of HOMA-IR, total cholesterol, low-density lipoprotein (LDL) cholesterol, and triglycerides were significantly higher in hypothyroid group than in normal controls. HOMA-IR showed a significant negative correlation with T3 and T4. The correlations of HOMA-IR, total cholesterol, LDL cholesterol, and triglycerides with TSH were positive. Conclusion: The present study shows that hypothyroidism leads to an elevated insulin resistance and dyslipidemia.

A study to compare thyroid profile between premenopausal and postmenopausal women

Background: The most abundant disorders worldwide are the thyroid disorders next to diabetes. Normal levels of thyroid hormones are essential for normal reproductive behavior. The onset of thyroid disorder increases with age. Thyroid disorders are more common in women than men. It is common that women develop menstrual cycle-related symptoms and are usually prone to thyroid dysfunction. Aim and Objectives: The objectives of this study were as follows: (i) To assess the thyroid profile in premenopausal women; (ii) to assess the thyroid profile in postmenopausal women; and (iii) to compare the thyroid profile between premenopausal and postmenopausal women. Materials and Methods: Subjects were selected according to premenopausal and postmenopausal status. Seventy premenopausal women more than 40 years of age and 70 postmenopausal women with menopause duration not more than 5 years. Thyroid profile was done in the central laboratory of Amala institute of Medical sciences, Thrissur. The tests were done basal-fasting state. Results: The mean thyroid-stimulating hormone levels in the postmenopausal group (3.33 ± 3.88) were higher than premenopausal group (2.65 ± 2.36 MIU/L). The mean FT3 level in postmenopausal group (5.39 ± 0.64 pmol/L) was higher than in premenopausal group (5.19 ± 0.66 pmol/L) and the mean FT4 level was also higher in postmenopausal group (12.01 ± 2.99 pmol/L) than in premenopausal group (11.22 ± 2.13 pmol/L). There was no statistically significant difference in the thyroid hormone profile in premenopausal and postmenopausal status. Conclusion: This study, the difference of thyroid parameters between premenopausal and postmenopausal women, does not show statistical significance. Further study with larger sample size in Indian population is required to evaluate association between thyroid status with pre- and postmenopausal status.

Endocrine Dysfunction in Recurrent Pregnancy Loss

Introduction: Miscarriage is the spontaneous loss of theconceptus before 20 weeks of gestation. Several disordersare known to contribute to recurrent miscarriage including:chromosomal anomalies; anti-cardiolipin antibodies;endocrine disorders such as poorly controlled diabetesmellitus; hyperprolactinaemia and thyroid diseases; andpelvic anatomic abnormalities. Study aimed to investigate theendocrine dysfunction in recurrent pregnancy lossMaterial and Methods: A prospective study comprising 70subjects was carried out. Fifty cases of recurrent abortionsconstituted the study group. Twenty healthy multipara femalesof same reproductive age group constituted the controlgroup. Venous blood samples were collected, and serum wasanalyzed for hormone analysis (T3, T4, TSH, LH, FSH, PRL,Testosterone) by ELISA method.Results: The mean prolactin level in cases of recurrentabortions was 19.96 ng/ml, while in controls was 11.77 ng/ml. The p value was 0.006 which was found to be statisticallyhighly significant. The mean TSH level in recurrent abortionscases was 5.81 mIU/L, while in controls was 1.95 mIU/L. Thep value was 0.004 which was found to be statistically highlysignificant.Conclusion: The patients with recurrent abortions hadsignificantly raised levels of TSH and Prolactin. Theprevalence of thyroid disorder and hyperprolactinemiawere higher in pregnant women with a history of recurrentabortion compared with healthy pregnant control population.Universal screening of pregnant females for endocrine profilecan improve the foetal outcome as well as social well-beingof females.

Effect of delayed pre-job occupational health examination on results of radiation exposed workers / 中国职业医学

OBJECTIVE: To explore the effect of delayed pre-job occupational health examination on occupational health surveillance by analyzing the results of pre-job occupational health examinations in radiation exposed workers. METHODS: A convenience sampling method was used to select 1 385 radiation workers as the research subjects in Guangdong Province in 2016 at a pre-job occupational health examination. Workers who did not engage in radiation work were selected as control group. Workers who engaged in radiation work but did not take pre-job occupational health examinations were selected as observation group. The difference of the results of occupational health examination between the two groups was analyzed. RESULTS: The proportion of the observation group was 55. 8%(773/1 385). The abnormal rates of the white blood cell( WBC) count,“double + ring”rate and lens in the observation group were higher than those in the control group(9. 3% vs 5. 7%,6. 0% vs 3. 6%,6. 2% vs 3. 6%,P < 0. 05),respectively. The WBC count in the observation group was lower than that in the control group [(6. 1 ± 1. 5) × 10~9/L vs(6. 7 ± 1. 5) × 10~9/L,P < 0. 01]. The contents of the thyroid stimulating hormone and triiodothyronine in the observation group were higher than those in the control group[(1. 3 ± 0. 4) m U/L vs(1. 2 ± 0. 3) m U/L,(1. 8 ± 0. 4) nmol/L vs(1. 7 ± 0. 5) nmol/L,P < 0. 01]. The tetraiodothyronine level in the observation group was lower than that in the control group [( 110. 8 ± 22. 4) nmol/L vs(113. 8 ± 23. 2) nmol/L,P < 0. 05]. CONCLUSION: The delay of pre-job occupational health examination of radiation exposed workers affects the examination results and the accuracy of basic health records.

Content change of urinary thyroid hormone parameters during pregnancy / 重庆医学

Objective To further research the urinary monitoring of the maternal thyroid functional status ,the levels of urine thyroid hormones were analyzed during pregnancy .Methods This study recruited 30 cases of healthy pregnant women at 9-12 ges-tational weeks .Their random urine specimens were collected every four weeks until delivery .The concentrations of urine thyrotro-pin(uTSH) ,urine free triiodothyronine(uFT3) and urine free tetraiodothyronine(uFT4) were detected by electrochemical lumines-cence immunoassay(ECLIA) .The urine retinol binding protein(uRBP) was detected by enzyme immunoassay (EIA) .After correc-ted by uRBP ,the statistical analysis was done to analyze the variation of the ratio of uTSH and uRBP (uTSH/uRBP) ,the ratio of uFT3 and uRBP(uFT3/uRBP)and the ratio of uFT4 and uRBP(uFT4/uRBP)during pregnancy .Results The median levels of u-rine thyroid hormone parameters were obtained from the healthy pregnant women every four weeks and were compared among dif-ferent stages .The difference of uFT3/uRBP and uFT4/uRBP was statistically significant (F= 6 .222 ,P< 0 .05 ;F= 5 .078 ,P<0 .05) ,and the levels of them varied linearity during pregnancy (F=27 .480 ,P<0 .05 ;F=23 .959 ,P<0 .05) .The difference of uT-SH/uRBP had no statistical significance(F=2 .731 ,P=0 .054) .Conclusion After corrected by uRBP ,the levels of uFT3 and uFT4 of healthy pregnant women decreased linearity among different gestational stages ,and the levels of uTSH had no noticeable change .

Assessment of nutritional status in hyperthyroidism patients.

Introduction: Hyperthyroidism often referred to as overactive thyroid, is a type of thyrotoxicosis, a hypermetabolic clinical syndrome which occurs when there are elevated serum levels of T3 and/or T4. There are very less studies on the nutritional deficiencies related to hyperthyroidism. Methods: Quantitative determination of Thyrotropin (TSH), triiodothyroinine (T3) and tetraiodothyronine (T4) was analyzed along with nutritional analysis of dietary nutrients like carbohydrate, proteins, fat, vitaminA, B1, B2, C, niacin, etc. Biostatistical analysis and correlations were analyzed by using Graph Pad prism software. Results: The mean intake of nutrients in Hyperthyroid and control groups are: Carbohydrate (147.9 ± 41.89 g, 218.3 ± 100.0 g), Thiamin (0.567 ± 2.850 mg, 1.051 ± 0.470 mg), Riboflavin (0.590 ± 0.341 mg, 1.121 ± 0.415 mg), Niacin (7.560 ± 2.346 mg , 11.59 ± 3.571 mg), pyridoxine (0.066 ± 0.262 mg , 0.317 ± 0.627 mg), Vitamin B1 (0.087 ± 0.205 μg, 0.199 ± 0.306 μg), Folacin (130.0 ± 36.57 μg , 143.4 ± 57.29 μg) and the mean values of all these nutrients were not optimum as recommended by ICMR. Conclusion: We should all be aware of the nutritional deficiencies encountered in hyperthyroidism and hence we can provide considerable support by eliminating adverse influences and normalizing the nutritional status by including multivitamins , antioxidants, etc. along with daily antithyroid drugs.

Assessment of nutritional status in hyperthyroidism patients.

Background: Hyperthyroidism often referred to as overactive thyroid, is a type of thyrotoxicosis, a hypermetabolic clinical syndrome which occurs when there are elevated serum levels of T3 and/or T4. There are very less studies on the nutritional deficiencies related to hyperthyroidism. Methods: Quantitative determination of Thyrotropin (TSH), triiodothyroinine (T3) and tetraiodothyronine (T4) was analyzed along with nutritional analysis of dietary nutrients like carbohydrate, proteins, fat, vitaminA, B1, B2, C, niacin, etc. Biostatistical analysis and correlations were analyzed by using Graph Pad prism software. Results: The mean intake of nutrients in Hyperthyroid and control groups are: Carbohydrate (147.9 ± 41.89 g, 218.3 ± 100.0 g), Thiamin (0.567 ± 2.850 mg, 1.051 ± 0.470 mg), Riboflavin (0.590 ± 0.341 mg, 1.121 ± 0.415 mg), Niacin (7.560 ± 2.346 mg , 11.59 ± 3.571 mg), pyridoxine (0.066 ± 0.262 mg , 0.317 ± 0.627 mg), Vitamin B1 (0.087 ± 0.205 μg, 0.199 ± 0.306 μg), Folacin (130.0 ± 36.57 μg , 143.4 ± 57.29 μg) and the mean values of all these nutrients were not optimum as recommended by ICMR. Conclusion: We should all be aware of the nutritional deficiencies encountered in hyperthyroidism and hence we can provide considerable support by eliminating adverse influences and normalizing the nutritional status by including multivitamins , antioxidants, etc. along with daily antithyroid drugs.

Análisis de la relación entre alteraciones del eje hipotálamo-hipófisis-tiroides y exposición a perclorato en ratones de la cepa ICR / Analysis of alterations between the hypothalamic-pituitary-thyroid axis and perchlorate exposure in ICR mice strain

Este estudio establece una correlación entre la exposición a perclorato de amonio y la presencia clínica de alteraciones en el eje hipotálamo-hipófisis- tiroides, tomando como referencia diferentes dosis de aplicación desde la aceptada como dosis segura hasta un incremento significativo de dicha dosis. El trabajo reviste gran importancia debido a que esta sustancia química es uno de los compuestos de mayor uso como pesticida en el departamento de Boyacá. Mediante ensayos inmunoenzimáticos con microplacas; con los Kit comerciales Kit Accubind Elisa Microwells TSH y Kit Accubind Elisa Microwells T4L y el análisis clínico se pudo establecer la existencia de alteraciones en el eje hormonal, lo que puede ser indicador en el futuro de un alto riesgo por parte de los individuos que manipulen esta sustancia.

This study establishes a correlation between exposure and clinical alterations in the hypothalamic-pituitary-thyroid axis. Different dosages were applied, from the accepted safe dosage up to a significant increase dosage. The study was carried out under the laboratory animal center conditions at Universidad of Boyacá (Colombia). Due that ammonium perchlorate is one of the most used compounds as pesticide in Boyacá department this type of studies are extremely important. Using enzyme immunoassay in micro-plate (Accubind Elisa Microwells TSH and Kit Accubind Elisa Microwells T4L ) and following clinical analysis alterations in the hormonal axis were found which could be be indicative of a possible high risk in the future for individuals who handle this substance.

Clinical Effect of Low Dose Tetraiodothyronine in Hepatic Fibrosis Activity on Compensated Cirrhosis with T3 Degraded / 中国基层医药

Objectives To investigate change of Tetraiodothyronine(TH)in serum on compensated cirrhosis with T_3 degraded and observe the effect of TH in hepatic fibrosis activity.Methods Sixty patients were randomly divided into experimental group and control group.The patients in experimental group and control group received same treatment,including protecting hepatic function and nutritional support.TH were taken to experimental group with 25 mg/d for a month.clinical effect were estimated,Hepatic function and hepatic fibrosis activity were measured in serum on all patients when the treatment was over.Results In comparison with control group,the levels of AST、ALT、HA、LN、PC-Ⅲand C-Ⅳin serum were lower,the level of ALB Was indiscriminate,and proportionality of A/G was higher in cirrhosis.Clinical effect was same in two groups.Conclusion The level of TH in serum was decreasing in compensation cirrhosis,and additional TH can decrease hepatic fibrosis activity,but can not improve clinical effect in short.