scholarly journals Pengaruh Pajanan Sinar Ultraviolet B Bersumber dari Sinar Matahari terhadap Konsentrasi Vitamin D (25(OH)D) dan Hormon Paratiroit pada Perempuan Usia Lanjut Indonesia

2008 ◽  
Vol 2 (4) ◽  
pp. 147 ◽  
Author(s):  
Siti Setiati

Berbagai penelitian menunjukkan bahwa defisiensi vitamin D dan hiperpara-tiroidisme sekunder menimbulkan dampak serius pada kesehatan, antara lain meliputi osteoporosis, osteomalasia, kelemahan otot, jatuh dan fraktur osteoporotik. Tujuan penelitian ini adalah (1) mengetahui pengaruh pajanan UVB sinar matahari pada konsentrasi 25(OH)D dan hormon paratiroid (PTH) perempuan usia lanjut Indonesia. (2) mendapatkan saat dan lama pemajanan yang optimal. Penelitian uji klinik acak terbuka ini melibatkan 74 perempuan berusia 60 - 90 tahun yang tinggal di 4 panti werda di Jakarta dan Bekasi. Randomisasi dilakukan untuk memisahkan kelompok studi dan kontrol. Kelompok kontrol hanya mendapat kalsium 1000 mg/hari, sedang kelompok intervensi dipajankan dengan matahari selama 6 minggu. Hasil yang diukur sebelum dan sesudah 6 minggu pemajanan adalah konsentrasi 25(OH)D, PTH, dan ion kalsium. Ditemukan bahwa, waktu pemajanan yang optimal adalah 1 jam sebelum dan sesudah tengah hari. Prevalensi defisiensi vitamin D pada wanita usia lanjut adalah 35,1%. Pada kelompok terpajan, konsentrasi 25(OH)D meningkat lebih tinggi daripada yang tidak dipajan (51,8% vs 12,5%). Hasil tambahan adalahrerata asupan kalsium 248 mg/hari, dan rerata asupan vitamin D 28 IU/hari.Kata kunci: Defisiensi vitamin D, perempuan usia lanjut, hormon paratiroidAbstractMany studies showed that vitamin D deficiency and secondary hyper-parathyroidism cause serious impact on health including osteoporosis, osteomalacia, paralysis, fall, and osteoporotic fracture. This study was conducted to compare the effect of UVB from sunlight exposure in combination with calcium supplementation, and control (calcium only) on the vitamin D status and parathyroid hormone (PTH) concentration in Indonesian elderly women. This study was a randomized clinical trial in institutionalized care unit. Subjects included 74 elderly women with a mean age 71 years. Intervention was random allocation of UVB from sunlight exposure at 0.6 MED/hour noted in the UV meter on the face and both arms and calcium 1000 mg, three times per week for 6 weeks, and without treatment (calcium 1000 mg only). Main outcome measured were fasting serum levels of 25(OH) D, PTH, and calcium ion at 0 and 6 weeks in both treatment and control groups. The incidence of vitamin D deficiency in this population study was 35.1 %. In the treatment group, 25(OH) D increased from 59.1 nmol/L to 84.3 nmol/L (mean value after 6 weeks of sunlight exposure) with only a slight increase of 25(OH) D in the control group (51.8% vs 12.5%). 25(OH)D deficient levels in 15 out 16 subjects became normal after 6 weeks of sun exposure. There was no change of PTH levels in both groups. Additional results of this study are mean calcium intake of 248 mg/day and vitamin D intake of 28 IU/day.Keywords: Vitamin D deficiency, elderly women, parathyroid hormone

2011 ◽  
Vol 44 (13) ◽  
pp. S135
Author(s):  
Zahra Jamali ◽  
Gholamreza Asadikaram ◽  
Mohammad Kazemi-arababadi

2021 ◽  
pp. 45-52
Author(s):  
N.S. Shevchenko ◽  
◽  
L.F. Bogmat ◽  
Yu.V. Khadzhinova ◽  
◽  
...  

Osteopenia (osteopenic syndrome) and osteoporosis (OP) are among the frequent and highly disabling conditions that accompany the development of rheumatic diseases (RD), including juvenile idiopathic arthritis (JIA). Changes in the requirements for the diagnosis and treatment of children with JIA according to the treatment strategy to achieve the goal (treat to target) have led to a decrease in the frequency of development and manifestations of OP in patients with RD. The condition of bone tissue in children with JIA, against the background of modern therapy and in conditions of widespread vitamin D deficiency requires further study. Purpose — to study bone mineral density (BMD) in children with JIA in modern disease management and to identify adverse factors for the development of OP among clinical signs. Materials and methods. We examined 35 children with JIA aged 7 to 17 years, mostly female (77.1%), with oligo (25.7)%, poly (60.0%) and undifferentiated (14.3%) option, 53.4% of whom have not yet received basic therapy. All patients underwent BMD by dual-energy X-ray absorptiometry on a bone densitometer Explorer QD W (Hologic), parathyroid hormone (PTH), 25-hydroxyvitamin D [25(OH)D], total and ionized calcium and phosphorus in syvo. The control group consisted of 12 healthy children of the same age with a normal level of 25(OH)D. Results. The mean level of vitamin D in the serum of children in the main group was 20.41±1.35 ng/ml, which was significantly lower than in the control group (30.03±2.53 ng/ml, p<0.05); the frequency of low levels of vitamin D reached 88.57%. The content of calcium and phosphorus in the blood did not deviate from the normative values, despite the widespread deficiency of vitamin D. 98.37% of patients had normal PTH values, the average level in the blood was 30.43±0.90 pg/ml. The content of PTH was the highest in non-differential arthritis (34.33±1.80 pg/ml), the lowest in the oligoarticular variant (28.36±1.43 pg/ml, p<0.05). PTH concentrations correlated with vitamin D levels (r=-0.41; p<0.05) and were independent of patient gender and disease activity. The frequency of decreased BMD was 28.57% of the surveyed children. The prevalence of osteopenia was the same in different variants of arthritis and did not depend on the sex and age of patients, positivity in the RF. Osteopenic syndrome was significantly more common in ANA-positive JIA than in ANA-negative variant (46.15% vs. 18.18%; pϕ<0.05). The condition of bone tissue (Z-criteria) depended on BMI (r=0.33; p<0.05), disease activity on the JADAS scale (r=0.35; p<0.04), the number of active joints (r=0.34; p<0.05); ANA level (r=-0.34; p<0.05). In the group of children with osteopenic syndrome, BMD correlated with the duration of the disease (r=-0.67; p<0.05), the number of active joints (r=-0.62; p<0.05), the level of blood phosphorus 0.74; p<0.05) and the sum of points on the JADAS scale (r=0.59; p<0.05). In the group of children with preserved BMD, the spectrum of correlations was supplemented by indicators of vitamin D status (r=-0.33; p<0.05) and BMI (r=-0.40; p<0.05). Conclusions. In children with JIA, the incidence of osteopenia is 28.57% with vitamin D deficiency in 88.57% of patients, preserved levels of total calcium, phosphorus and PTH in the blood. Decreased BMD in the early stages of JIA is associated with a younger age of patients and the age of onset of the disease, increased prevalence of joint syndrome, inflammatory and serological activity of the disease, ionized calcium and blood phosphorus, PTH levels and decreased vitamin D (р<0,001). The research was carried out in accordance with the principles of the Helsinki Declaration. The study protocol was approved by the Local Ethics Committee of these Institutes. The informed consent of the patient was obtained for conducting the studies. No conflict of interest was declared by the authors. Key words: bone mineral density; juvenile idiopathic arthritis; osteopenia; 25-OH-vitamin D; parathyroid hormone.


Blood ◽  
2015 ◽  
Vol 126 (23) ◽  
pp. 4574-4574 ◽  
Author(s):  
Emine Türkkan ◽  
Burcu Tufan Tas ◽  
Suheyla Ocak

Abstract Introduction: The survival of the patients with thalassemia has progressively improved with advances in therapy, however, increased survival allowed for several complications of disease. Metabolism of vitamin D affected in patients with thalassemia, due to accumulation of iron in the liver as the skin. The aim of this study is to compare vitamin D and parathyroid hormone (PTH) levels between patients with thalassemia and healthy control group. Methods: In pediatric hematology clinic, 33 patients (23 male, 10 female) with beta thalassemia major and 33 age-sex matched healthy people as a control group were included. Serum 25- OH Vitamin D levels were defined as normal >30 ng/ml, insufficiency between 20-30 ng/ml and deficiency < 20 ng/ml and PTH levels as normal between 10-65 pg/ml, decreased <10 pg/ml, and increased >65 pg/ml. Results: Mean age was 23.02+8.18 years old in patient group and 23+ 8.16 in control group. %33.3 of the patients had 25-OH vitamin D insufficiency and %30.3 of had 25-OH vitamin D deficiency. In different studies, the 25-OH vitamin D deficiency found between %12-90, and insufficiency between % 24.7-69.8 of the thalassemic patients. %81.8 of the patients had normal PTH levels, %18.2 decreased and none of the patients were found increased. In literature, there were confluent results about PTH levels in thalassemic patients, some of the studies showed hypoparathyroidism, and some of hyperparathyroidism or normal levels of PTH (Vogiatzi Br J Haematol 2009, Moulas Acta Paediatrica 1997, Merchant Indian J Pediatr 2011). In our study we couldn't show hyperparathyroidism in patient group. Also we found parathyroid hormone levels were significantly lower (p<0.001), while 25-OH vitamin D levels were significantly higher (p<0.05), in patients with thalassemia than in control group. This result was interestingly showed that, normal population in our country may be low levels of vitamin D. So we need more studies about PTH and vitamin D levels of healthy people, not only thalassemic patients in our country. Disclosures No relevant conflicts of interest to declare.


2019 ◽  
Author(s):  
Salma Ahi ◽  
Mehrdad Kazemi ◽  
Naser Hatemi

Abstract Vitamin D deficiency is associated with an increased incidence of autoimmune thyroid diseases. Its association with Hashimoto has previously been discussed in several studies, but its role in Graves' disease is yet to be elucidated; the aim of this study was to evaluate the effect of vitamin D on hyperthyroid patients regardless of the cause (autoimmune, non-autoimmune and control) ‏. A total of 187 patients were divided into three groups: 74 patients with autoimmune hyperthyroidism (Graves), 43 non-immune patients (Toxic thyroid adenoma and goiter multi-nodular) and 70 healthy patients as the control group. The primary outcome was the frequency of vitamin D deficient patients and the level of vitamin D in each group. The secondary outcomes were measured as the values ​​of anti-thyroid antibody and anti-thyroglobulin antibodies, TSH, T3, and T4. Based on the results, higher levels of TSH were observed in Graves patients who were vitamin D sufficient in comparison to Graves subjects with moderate vitamin D deficiency (P=0.022). Also, vitamin D sufficient control subjects had higher TSH levels than subjects with severe (p<0.0001) and moderate (P<0.0001) vitamin D deficiency. Vitamin D deficiency was more frequent in Graves patients, however the difference was not significant (P-value>0.05). Vitamin D deficiency as an effective factor in thyroid autoimmune diseases is more frequent in autoimmune hyperthyroid disease patients. Moreover, vitamin D sufficient Graves' participants had higher TSH levels compared with vitamin D deficient ones, probably protecting them from developing osteoporosis. Low TSH levels in hyperthyroid patients are one of the osteoporosis risk factors‏.


Author(s):  
Mohammed Khazaal Jumaahm ◽  
Ali Hussain Ali Alhamza ◽  
Abbas Ali Mansour

<b><i>Background:</i></b> Parathyroid hormone (PTH) has been reported to have a positive correlation with insulin resistance and the development of the metabolic syndrome. This study aims to evaluate if there is an association between obesity and serum PTH levels. <b><i>Methods:</i></b> This case-control study was conducted at the Faiha Specialized Diabetes Endocrine and Metabolism Center in Basrah (Southern Iraq) from September 2018 to July 2019. A total of 230 patients were recruited for this study (103 male and 127 female), divided into 2 groups according to the BMI: &#x3c;30 kg/m<sup>2</sup> were considered as the control group (83 persons) and ≥30 kg/m<sup>2</sup> were considered as obese persons (147 persons). The study groups were also subdivided into 3 groups according to the serum level of PTH: &#x3c;40 pg/mL, 40–65 pg/mL, and &#x3e;65 pg/mL. <b><i>Results:</i></b> The mean age of the obese and control groups was 44.39 ± 10.64 and 30.12 ± 8.95 years, respectively. About 46.25% of obese were men and 53.75% were women, while 42% of the control group were men and 58% were women. Serum PTH level was significantly higher (<i>p</i> &#x3c; 0.001) among obese persons with a mean level of 53.21 ± 19.58 pg/mL for obese and 37.63 ± 21.8 pg/mL for control. Vitamin D deficiency was seen in 84.4% of the obese group while in 71.1% of the control group (<i>p</i> value 0.04). Females turned to have higher PTH levels than males in both the obese and the control group (<i>p</i> value &#x3c;0.001). However, age and the presence of diabetes mellitus were not associated with higher PTH levels (<i>p</i> value 0.155 and 0.6, respectively). <b><i>Conclusion:</i></b> Obesity was associated with a higher serum PTH level related to the severity of vitamin D deficiency.


2016 ◽  
Vol 86 (1-2) ◽  
pp. 9-17 ◽  
Author(s):  
Bekir Ucan ◽  
Mustafa Sahin ◽  
Muyesser Sayki Arslan ◽  
Nujen Colak Bozkurt ◽  
Muhammed Kizilgul ◽  
...  

Abstract.The relationship between Hashimoto’s thyroiditis and vitamin D has been demonstrated in several studies. The aim of the present study was to evaluate vitamin D concentrations in patients with Hashimoto’s thyroiditis, the effect of vitamin D therapy on the course of disease, and to determine changes in thyroid autoantibody status and cardiovascular risk after vitamin D therapy. We included 75 patients with Hashimoto’s thyroiditis and 43 healthy individuals. Vitamin D deficiency is defined as a 25-hydroxy vitamin D (25(OH)D3) concentration less than 20ng/mL. Vitamin D deficient patients were given 50.000 units of 25(OH)D3 weekly for eight weeks in accordance with the Endocrine Society guidelines. All evaluations were repeated after 2 months of treatment. Patients with Hashimoto’s thyroiditis had significantly lower vitamin D concentrations compared with the controls (9.37±0.69 ng/mL vs 11.95±1.01 ng/mL, p < 0.05, respectively). Thyroid autoantibodies were significantly decreased by vitamin D replacement treatment in patients with euthyroid Hashimoto’s thyroiditis. Also, HDL cholesterol concentrations improved in the euthyroid Hashimoto group after treatment. The mean free thyroxine (fT4) concentrations were 0.89±0.02 ng/dL in patients with Hashimoto’s thyroiditis and 1.07±0.03 ng/dL in the healthy control group (p < 0.001). The mean thyroid volumes were 7.71±0.44 mL in patients with Hashimoto’s thyroiditis and 5.46±0.63 mL in the healthy control group (p < 0.01). Vitamin D deficiency is frequent in Hashimoto’s thyroiditis and treatment of patients with this condition with Vitamin D may slow down the course of development of hypothyroidism and also decrease cardiovascular risks in these patients. Vitamin D measurement and replacement may be critical in these patients.


Author(s):  
Aya Hallak ◽  
Malhis Mahmoud ◽  
Yaser Abajy Mohammad

The objectives of this study were to estimate the prevalence of vitamin D deficiency in patients with acute coronary syndrome in comparison with normal individuals and study the correlation between these two conditions. We measured the plasma 25-hydroxy vitamin D (25-OH-D) levels in 60 patients with acute coronary syndromes (ACS) of both gender and in 30 age matched control individuals of both gender without any known cardiovascular or systemic diseases. The levels of 25-OH-D were measured by ELISA method and the results were statically analyzed to find out any possible correlation. We classified the cases according to their plasma 25(OH)D levels. 25(OH)D levels of ≥ 30 ng/ml were considered normal, levels < 30 and > 20 ng/ml were classified as insufficient, while levels of ≤ 20 ng/ml were classified as deficient. In the current study the prevalence of hypovitaminosis D in the patients group was much higher than it was in the control group. Vitamin D deficiency was observed in 80% and insufficiency in 13% of total patients of ACS, there by bringing the total count to 93%. Whereas only 7% of the patients had adequate vitamin D levels. Thus, these results indicate the existence of a significant correlation between the vitamin D deficiency and ACS in comparison to healthy controls


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Vidya Lakshmi Purushothaman ◽  
Raphael E. Cuomo ◽  
Cedric F. Garland ◽  
Timothy K. Mackey

Abstract Background Vitamin D has been identified as a potential protective factor in the development of colorectal cancer (CRC). We expect to see a stronger association of ultraviolet B (UVB) exposure and CRC crude rates with increasing age since chronic vitamin D deficiency leads to sustained molecular changes that increase cancer risk. The DINOMIT (disjunction, initiation, natural selection, overgrowth, metastasis, involution, and transition) model postulates various stages of cancer development due to vitamin D deficiency and the associated latency period. The purpose of this study is to examine this age-dependent inverse relationship globally. Methods In this ecological study, a series of linear and polynomial regression tests were performed between country-specific UVB estimates adjusted for cloud cover and crude incidence rates of CRC for different age groups. Multiple linear regression was used to investigate the association between crude incidence rates of colorectal cancer and UVB estimate adjusting for urbanization, skin pigmentation, smoking, animal consumption, per capita GDP, and life expectancy. Statistical analysis was followed by geospatial visualization by producing choropleth maps. Results The inverse relationship between UVB exposure and CRC crude rates was stronger in older age groups at the country level. Quadratic curve fitting was preferred, and these models were statistically significant for all age groups. The inverse association between crude incidence rates of CRC and UVB exposure was statistically significant for age groups above 45 years, after controlling for covariates. Conclusion The age-dependent inverse association between UVB exposure and incidence of colorectal cancer exhibits a greater effect size among older age groups in global analyses. Studying the effect of chronic vitamin D deficiency on colorectal cancer etiology will help in understanding the necessity for population-wide screening programs for vitamin D deficiency, especially in regions with inadequate UVB exposure. Further studies are required to assess the need for adequate public health programs such as selective supplementation and food fortification.


Thyroid ◽  
2004 ◽  
Vol 14 (9) ◽  
pp. 789-791 ◽  
Author(s):  
Hosahalli K. Mohan ◽  
Ashley M. Groves ◽  
Ignac Fogelman ◽  
Susan E.M. Clarke

Sign in / Sign up

Export Citation Format

Share Document