scholarly journals Serum 25(OH)D Level and Parathyroid Hormone in Chinese Adult Population: A Cross-Sectional Study in Guiyang Urban Community from Southeast of China

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Zhang Qiao ◽  
Shi Li-xing ◽  
Peng Nian-chun ◽  
Xu Shu-jing ◽  
Zhang Miao ◽  
...  
Keyword(s):  
Vitamin D ◽  
Parathyroid Hormone ◽  
Secondary Hyperparathyroidism ◽  
Adult Population ◽  
Cross Sectional Study ◽  
Vitamin D Insufficiency ◽  
Cluster Sampling ◽  
Cross Sectional ◽  
The Mean ◽  
Serum Pth

Objective. To evaluate vitamin D status and serum parathyroid hormone (IPTH) of healthy adults living in Guiyang.Design and Participants. We conducted a cross-sectional evaluation in the General Community in Guiyang by cluster sampling method. The data was a part of 1510 participants (634 men, 876 women) aged 20–79 years median 45.2 years from November 2009 to February 2010 in Guiyang Health Measures Survey.Measurements. Aradioimmunoassay was used to measure the level of 25-hydroxyvitamin D [25(OH)D] and intact parathyroid hormone (iPTH).Results.The mean serum 25(OH)D level was (20.4 ± 9.0) ng/mL and the highest level among participants aged 40–59 years (22.8 ng/mL). The mean serum PTH level was (32.1 ± 13.7) pg/mL and the lowest level among participants aged 40–50 years (30.8 ng/mL). Serum 25(OH)D was below 50 nmol/liter in 52.3%, below 75 nmol/liter in 84.6%, and above 75 nmol/liter in 15.4% of the respondents. Secondary hyperparathyroidism was 5.4% (5.4% among men and 4.6% among women). The prevalence of secondary hyperparathyroidism increased (5.8%, 6.5%, and 7.1%, resp.) with decreasing serum 25(OH)D levels among subjects who were 30 to 20, 19.9 to 10, and <10 ng/mL, respectively. Serum 25(OH)D was inversely associated with serum PTH.Conclusions. Vitamin D insufficiency and its complication of secondary hyperparathyroidism are common.

scholarly journals Vitamin D Status of Adults in the Outpatient Department in Bangladesh

2018 ◽  
Vol 27 (1) ◽  
pp. 94-97
Author(s):  
NA Chowdhury ◽  
Mohammad Zaid Hossain ◽  
MM Mia ◽  
S Hoque ◽  
NA Chowdhury ◽  
...  
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Adult Population ◽  
Venous Blood ◽  
Cross Sectional Study ◽  
Vitamin D Insufficiency ◽  
Outpatient Department ◽  
Cross Sectional ◽  
Hydroxyvitamin D ◽  
Males And Females

Background: Vitamin D deficiency (VDD) is widespread, yet it is the most underdiagnosed and undertreated nutritional deficiency in the world. The prevalence of VDD is estimated to affect over 1 billion people worldwide. The present study was conducted to estimate the prevalence of VDD among adults aged 18–89 years visiting the outpatient department in a clinic/chamber. Objective: To assess the status of vitamin D deficiency (VDD) among the adult population in Bangladesh. Methods: A cross sectional study was conducted among 189 adults in the year 2017 including both males and females aged 18–89 years in outpatient department of a clinic/chamber. Venous blood sample was collected for the measurement of Vitamin D (25 hydroxyvitamin D). Results: This study included a total of 189 adults (29 males and 160 females) aged between 18 and 89 years. Majority of the patients were vitamin D deficient, 67.2% and 20.6% were suffering from vitamin D insufficiency. Maximum males and females are deficient, 69% and 66.9% respectively where as a very small percentage has sufficient level of vitamin D. Conclusions: Vitamin D deficiency (VDD) is alarmingly high. Screening services should be implemented while researchers focus on strategies to lessen the incidence and morbidity associated with these conditions. J Dhaka Medical College, Vol. 27, No.1, April, 2018, Page 94-97

scholarly journals Prevalence of Vitamin D Deficiency among University Students in Uşak, Turkey

2020 ◽  
pp. 135-142
Author(s):  
Saygın Kamacı ◽  
Senem Şanlı ◽  
Ayşe Özdemir ◽  
Seyfi Sardoğan ◽  
Sanem Erdoğan ◽  
...  
Keyword(s):  
Vitamin D ◽  
University Students ◽  
Vitamin D Deficiency ◽  
Cross Sectional Study ◽  
Vitamin D Insufficiency ◽  
Dietary Vitamin ◽  
Vitamin D Metabolism ◽  
Cross Sectional ◽  
Organ Systems ◽  
The Mean

Vitamin D deficiency is now recognized as a pandemic with implications for multi-organ systems including bone health and immunological processes. Low levels have been associated with several chronic and infectious diseases. The aim of the study was to evaluate the prevalence of vitamin D deficiency among university students in Usak, Turkey. This cross-sectional study included 100 (44 male and 56 female) university students between January 2020 to February 2020. Demographics, medical history, sunlight exposure, dietary vitamin D intake, body mass index of each individual were recorded in face-to-face interviews. Subjects with known metabolic conditions affecting vitamin D metabolism were excluded. Vitamin D nutritional status was assessed as deficient if 25(OH)D levels were <20ng/mL, insufficient if between 20 and 30 ng/mL, sufficient if ≥30 ng/mL, while <10ng/mL was considered as severe. The mean age for all students was 20.18±1.77(18-30) years.  The mean serum 25(OH)D level was 11.60±9.81 among all students (12.22 ± 5.40 ng/mL in males, 11.11±12.24 ng/ml in females). 91 students (91%) were assessed as vitamin D deficient (92.86% among female, 88.64% among male, P >.05). Prevalence of vitamin D insufficiency and deficiency among male students were 11.36 and 88.64%, respectively. Vitamin D deficiency was highly prevalent among medical students included in this study and its deficiency especially among female students is alarmingly prevalent. Absence of vitamin D fortified foods in Turkish market is shortcoming. Therefore, preventive strategies parallel to regular vitamin D fortified food consumption is seriously recommended.

scholarly journals Parathyroid Hormone in Pregnancy: Vitamin D and Other Determinants

Nutrients ◽  
2021 ◽  
Vol 13 (2) ◽  
pp. 360
Author(s):  
Ola Hysaj ◽  
Patricia Marqués-Gallego ◽  
Aline Richard ◽  
Magdeldin Elgizouli ◽  
Alexandra Nieters ◽  
...  
Keyword(s):  
Vitamin D ◽  
Parathyroid Hormone ◽  
Inflection Point ◽  
Demographic Data ◽  
Late Pregnancy ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
25 Hydroxy Vitamin D ◽  
Maximal Suppression

We aimed to assess the parathyroid hormone (PTH) concentration in pregnant women at the beginning of pregnancy (1st trimester) and within days before delivery (3rd trimester) and evaluate its determinants. From September 2014 through December 2015 in a cross-sectional study, 204 women in the 1st trimester of pregnancy and 203 women in the 3rd trimester of pregnancy were recruited. Blood samples were collected to measure PTH and circulating 25-hydroxy-vitamin D (25(OH)D) concentrations. Lifestyle and demographic data were collected using a questionnaire. Serum 25(OH)D and PTH were inversely correlated in both early and late pregnancy. Our analyses suggest that in the 3rd trimester of pregnancy, a 25(OH)D level of 18.9 ng/mL (47.3 nmol/L) could serve as an inflection point for the maximal suppression of PTH. Statistically significant determinants of PTH concentrations in multiple regression were 25(OH)D concentrations, season, multiparity and education of the partner (all p < 0.05) in early pregnancy. In late pregnancy, 25(OH)D concentrations and country of origin were statistically significant determinants of PTH concentrations (all p < 0.05). These factors and their effect on PTH appear to be vastly determined by 25(OH)D; however, they might also affect PTH through other mechanisms besides 25(OH)D.

scholarly journals Interactions between Vitamin D Status, Calcium Intake and Parathyroid Hormone Concentrations in Healthy White-Skinned Pregnant Women at Northern Latitude

Nutrients ◽  
2018 ◽  
Vol 10 (7) ◽  
pp. 916 ◽  
Author(s):  
Andrea Hemmingway ◽  
Karen O’Callaghan ◽  
Áine Hennessy ◽  
George Hull ◽  
Kevin Cashman ◽  
...  
Keyword(s):  
Vitamin D ◽  
Parathyroid Hormone ◽  
Pregnant Women ◽  
Calcium Intake ◽  
Geometric Mean ◽  
Vitamin D Status ◽  
Metabolic System ◽  
Cross Sectional ◽  
The Mean ◽  
In Pregnancy

Adverse effects of low vitamin D status and calcium intakes in pregnancy may be mediated through functional effects on the calcium metabolic system. Little explored in pregnancy, we aimed to examine the relative importance of serum 25-hydroxyvitamin D (25(OH)D) and calcium intake on parathyroid hormone (PTH) concentrations in healthy white-skinned pregnant women. This cross-sectional analysis included 142 participants (14 ± 2 weeks’ gestation) at baseline of a vitamin D intervention trial at 51.9 °N. Serum 25(OH)D, PTH, and albumin-corrected calcium were quantified biochemically. Total vitamin D and calcium intakes (diet and supplements) were estimated using a validated food frequency questionnaire. The mean ± SD vitamin D intake was 10.7 ± 5.2 μg/day. With a mean ± SD serum 25(OH)D of 54.9 ± 22.6 nmol/L, 44% of women were <50 nmol/L and 13% <30 nmol/L. Calcium intakes (mean ± SD) were 1182 ± 488 mg/day and 23% of participants consumed <800 mg/day. The mean ± SD serum albumin-adjusted calcium was 2.2 ± 0.1 mmol/L and geometric mean (95% CI) PTH was 9.2 (8.4, 10.2) pg/mL. PTH was inversely correlated with serum 25(OH)D (r = −0.311, p < 0.001), but not with calcium intake or serum calcium (r = −0.087 and 0.057, respectively, both p > 0.05). Analysis of variance showed that while serum 25(OH)D (dichotomised at 50 nmol/L) had a significant effect on PTH (p = 0.025), calcium intake (<800, 800–1000, ≥1000 mg/day) had no effect (p = 0.822). There was no 25(OH)D-calcium intake interaction effect on PTH (p = 0.941). In this group of white-skinned women with largely sufficient calcium intakes, serum 25(OH)D was important for maintaining normal PTH concentration.

scholarly journals KNOWLEDGE AND PRACTICES REGARDING VITAMIN D DEFICIENCY AMONG WOMEN ATTENDING IMAM HUSSEIN MEDICAL CITY IN KARBALA 2018

2019 ◽  
pp. 39-43
Author(s):  
SARAH JAFAR AL-GHRAIBAWI ◽  
SAAD IBRAHIM AL-GHABBAN ◽  
RIYADH DHEYHOOD AL-ZUBAIDY
Keyword(s):  
Vitamin D ◽  
Vitamin D Deficiency ◽  
Public Awareness ◽  
Sun Exposure ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Significant Difference ◽  
Medical City ◽  
The Mean ◽  
Socio Demographic Factors

Objective: Vitamin D deficiency is a global health problem. It is significantly associated with skeletal and non-skeletal problems. Prevention can be maintained mainly by effective sun exposure or supplementation and to lesser extent by dietary intake. To determine the magnitude of knowledge and practice of women towards vitamin D deficiency. Methods: A cross-sectional study, purposive sample of 442 women were approached who attended consultants’ clinics of Imam Hussein Medical City in Karbala. Data collection done between March 2 and June 30, 2018 through direct interviews using a special questionnaire prepared for the purpose of the study. Results: Less than half (45.2%) of the women had heard about vitamin D; their source of information was from relatives and friends then from health care provider. The mean score for the participants’ knowledge about VDD was 4.25 out of 9.0 (47%). It has a significant association with higher educational levels and urban residence. There is no significant difference regarding age, marital status or occupation. The mean score for the participants’ practice about vitamin D deficiency was 2.53 out of 5 (50.71%). There is no influence of practice score by socio-demographic factors. Conclusion: Overall knowledge towards vitamin D deficiency was suboptimal. Improving practices towards VD is directly related to increase knowledge about it that indicates the need to increase public awareness about the problem, encourage appropriate way of sun exposure, consumption of vitamin D rich food and taking supplementation when sun exposure is difficult.

scholarly journals Thyroid Function and 25 (OH) Vitamin D Level among Sudanese Women in Early Pregnancy

2018 ◽  
Vol 6 (3) ◽  
pp. 488-492
Author(s):  
Imad R. Musa ◽  
Duria A. Rayis ◽  
Mohmamed A. Ahmed ◽  
Ammar H. Khamis ◽  
Abubakr M. Nasr ◽  
...  
Keyword(s):  
Vitamin D ◽  
Thyroid Function ◽  
Early Pregnancy ◽  
Cross Sectional Study ◽  
The Body ◽  
Sectional Study ◽  
Cross Sectional ◽  
Vitamin D Levels ◽  
The Mean ◽  
25 Oh Vitamin D

AIM: A cross-sectional study was conducted at Saad Abualila Hospital (Khartoum, Sudan) to evaluate the vitamin D levels and thyroid function among pregnant Sudanese women (132) in early pregnancy.METHODS: A cross-sectional study was conducted at Saad Abualila hospital (Khartoum, Sudan) during the period from March to July 2015. Women who were in early pregnancy with a singleton pregnancy were approached to participate in the study after signing informed consent. A sample size of 132 participants was calculated guided by the normal interval of thyroid function in Sudanese women in the first trimester and not the level of 25(OH) vitamin D. The 25 - hydroxyvitamin D (25 (OH) vitamins levels were measured using an electrochemiluminescence immunoassay on an Elecsys 2010 Analyzer (Roche Diagnostics, Mannheim, Germany).RESULTS: The mean (SD) of age, gravidity and gestational age was 27.6 (5.5) years, 2.2 (1.6) and 10.4 (2.2) weeks, respectively. The mean (SD) of the body mass index (BMI) and haemoglobin was 27.1 (5.2) kg/m2 and 10.8 (1.1) g/dl, respectively. Median (interquartile) values of TSH, FT3, and FT4 were 1.164 IU/ml (0.079 -2.177 IU/ml), 4.639 nmol/l (3.843 - 6.562 nmol/l), and 16.86 pmol/l (13.02 - 31.48 pmol/l), respectively. There was no significant correlation between vitamin D levels and TSH, FT3 and FT4CONCLUSION: There is no correlation between 25 (OH) vitamin D levels and thyroid function during early pregnancy among Sudanese pregnant women, despite prevalent vitamin D deficiency among these women.

scholarly journals Total Pesticide Exposure Calculation among Vegetable Farmers in Benguet, Philippines

2009 ◽  
Vol 2009 ◽  
pp. 1-5 ◽  
Author(s):  
Jinky Leilanie Lu
Keyword(s):  
Risk Factors ◽  
Pesticide Exposure ◽  
Cross Sectional Study ◽  
Cluster Sampling ◽  
Sectional Study ◽  
Cross Sectional ◽  
Vegetable Farmers ◽  
Safety And Health ◽  
The Mean ◽  
Integrated Program

This was a cross-sectional study that investigated pesticide exposure and its risk factors targeting vegetable farmers selected through cluster sampling. The sampling size calculated with was 211 vegetable farmers and 37 farms. The mean usage of pesticide was 21.35 liters. Risk factors included damaged backpack sprayer (34.7%), spills on hands (31.8%), and spraying against the wind (58%). The top 3 pesticides used were pyrethroid (46.4%), organophosphates (24.2%), and carbamates (21.3%). Those who were exposed to fungicides and insecticides also had higher total pesticide exposure. Furthermore, a farmer who was a pesticide applicator, mixer, loader, and who had not been given instructions through training was at risk of having higher pesticide exposure. The most prevalent symptoms were headache (64.1%), muscle pain (61.1%), cough (45.5%), weakness (42.4%), eye pain (39.9%), chest pain (37.4%), and eye redness (33.8%). The data can be used for the formulation of an integrated program on safety and health in the vegetable industry.

scholarly journals Prevalence of Vitamin D Insufficiency and Associated Factors Among Canadian Cree: A Cross-sectional Study

2013 ◽  
Vol 104 (4) ◽  
pp. e291-e297 ◽  
Author(s):  
Bruno Riverin ◽  
Eric Dewailly ◽  
Suzanne Côté ◽  
Louise Johnson-Down ◽  
Suzanne Morin ◽  
...  
Keyword(s):  
Vitamin D ◽  
Associated Factors ◽  
Cross Sectional Study ◽  
Vitamin D Insufficiency ◽  
Sectional Study ◽  
Cross Sectional

Myopia in school-aged children with preterm birth: the roles of time spent outdoors and serum vitamin D

2020 ◽  
pp. bjophthalmol-2019-315663
Author(s):  
Hung-Da Chou ◽  
Tsung-Chieh Yao ◽  
Yu-Shu Huang ◽  
Chung-Ying Huang ◽  
Men-Ling Yang ◽  
...  
Keyword(s):  
Vitamin D ◽  
Preterm Birth ◽  
Serum Vitamin ◽  
Cross Sectional Study ◽  
Vitamin D Insufficiency ◽  
Cross Sectional ◽  
Lower Odds ◽  
Hydroxyvitamin D ◽  
Serum Vitamin D ◽  
School Aged Children

AimsTo analyse the factors associated with myopia in school-aged children with preterm birth and with or without retinopathy of prematurity (ROP).MethodsChildren born prematurely between January 2010 and December 2011 were enrolled in this cross-sectional study when they reached school age between April 2017 and June 2018 in a referral centre. The main parameters were cycloplegic refraction, time spent outdoors and serum 25-hydroxyvitamin D (25(OH)D) concentration.ResultsA total of 99 eyes from 99 children with a mean age of 6.8 years underwent analysis. The average time spent outdoors was significantly higher in the non-myopic group (0.9 ± 0.5 hours/day) than in the myopic group (0.7 ± 0.3 hours/day) (p = 0.032). After adjustment for age, sex, number of myopic parents, ROP severity, near-work time and serum 25(OH)D concentration, more time spent outdoors was correlated with a lower odds of myopia (OR, 0.13 per additional hour per day; 95% CI, 0.02–0.98; p = 0.048). Mean serum 25(OH)D concentrations were similar between the myopic and non-myopic groups (49.7 ± 13.6 and 48.8 ± 14.0 nmol/mL; p = 0.806) and were not correlated with spherical equivalence power (r = −0.09; p = 0.418). Vitamin D insufficiency was present in 57% of the participants.ConclusionsAmong preterm children with or without ROP, more time spent outdoors was associated with lower odds of myopia. The serum 25(OH)D concentration was not associated with myopia, but a high proportion of the participants had insufficient levels.

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