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1.
J Endocr Soc ; 6(12): bvac148, 2022 Oct 26.
Artigo em Inglês | MEDLINE | ID: mdl-36320627

RESUMO

Background: Despite the gain in life expectancy that people living with HIV (PLHIV) have had in the past few years, the disease is accompanied by an increase in the prevalence of noninfectious chronic diseases. PLHIV have a higher prevalence of osteoporosis, fracture, diabetes mellitus, and insulin resistance than the general population. It is unknown if insulin resistance is associated with osteoporosis and fractures in PLHIV. Our study aimed to assess the association between insulin resistance and osteoporosis in PLHIV. Methods: A cross-sectional study was carried out in southern Brazil. PLHIV ages 50 years or older on antiretroviral treatment were included. Insulin resistance was considered present when the Homeostatic Model Assessment of Insulin Resistance (HOMA-IR) was higher than expected for the Brazilian population (>2.7). The triglyceride-glucose (TyG) index was also calculated. Results: Of the 101 PLHIV who agreed to participate, 84 underwent insulin and bone mineral density measurements. The prevalence of osteoporosis was 19%. The frequency of insulin resistance calculated by HOMA-IR was 68.2%. Participants with osteoporosis had lower body mass index (BMI) and triglyceride values than those without it. HOMA-IR [4.8(6.6) vs 8.68(9.6), P = 0.013] and TyG [5.0(0.3) vs 5.2 (0.4), P = 0.029]. The association between the total femur t-score disappeared after correction for BMI in the linear regression model. There was no association between vertebral fractures and insulin resistance. Conclusion: In our study, PLHIV with osteoporosis have lower insulin resistance than PLHIV without it. However, this finding appears to be related to lower BMI. The association between insulin resistance and bone in PLHIV appears to be somewhat similar to that of the general population.

2.
Calcif Tissue Int ; 107(3): 249-256, 2020 09.
Artigo em Inglês | MEDLINE | ID: mdl-32683475

RESUMO

The prevalence of chronic diseases is increasing in people living with HIV (PLHIV) in the post ART era. Sarcopenia is prevalent in the elderly and is associated with many chronic diseases. Our study aimed to evaluate the frequency of sarcopenia in PLHIV and its association with bone mineral density and fracture. A cross-sectional study was carried out at Santa Maria, South Brazil. It included PLHV age ≥ 50 years and registered to receive antiretroviral therapy. A structured questionnaire was applied, blood samples collected, muscle strength evaluated, body composition measured, and vertebral morphometry performed. Sarcopenia and presarcopenia were defined according to the European Working Group on Sarcopenia in Older People. Of the 101 patients recruited, 83 underwent DXA and muscle strength measurements. The prevalence of sarcopenia and presarcopenia in the individuals studied was 12% and 16.9%, respectively. 66.7% of sarcopenic individuals had morphometric vertebral fractures and there was a tendency towards a higher frequency of multiple vertebral fractures when compared with non-sarcopenic subjects (44.4% vs. 16.2%, p = 0.066). BMI and total hip BMD were significantly lower in sarcopenic than non-sarcopenic individuals (p ≥ 0.035 and 0.032 respectively). In multiple regression analysis, sarcopenia was associated with age and multiple vertebral fractures. Sarcopenia was present in 12% of this population of PLHIV age ≥ 50 years and was associated with lower hip BMD and a high prevalence of vertebral fractures.


Assuntos
Infecções por HIV/complicações , Sarcopenia , Fraturas da Coluna Vertebral , Idoso , Composição Corporal , Densidade Óssea , Brasil , Estudos Transversais , Humanos , Pessoa de Meia-Idade , Prevalência , Sarcopenia/complicações , Fraturas da Coluna Vertebral/complicações
3.
Diabetes Metab Res Rev ; 36(1): e3208, 2020 01.
Artigo em Inglês | MEDLINE | ID: mdl-31343823

RESUMO

BACKGROUND: The mitochondrial protein frataxin is involved in iron metabolism, as well as regulation of oxidative stress. To elucidate the association of frataxin with the pathophysiology of diabetes, we evaluated the mRNA levels of frataxin in leukocytes of patients with type 2 diabetes (T2D). In addition, we investigated the relation between frataxin mRNA levels, inflammatory cytokines, and oxidative stress biomarkers. METHODS: A study including 150 subjects (115 patients with T2D and 35 healthy subjects) was performed to evaluate the frataxin mRNA levels in leukocytes. We assessed the relation between frataxin and interleukin (IL)-6, IL-1, tumour necrosis factor-alpha (TNF-α), total oxidation status (TOS), total antioxidant capacity (TAC), and serum iron. RESULTS: The frataxin mRNA levels in the T2D group were significantly lower than those in healthy subjects. It was also demonstrated that T2D patients with frataxin mRNA levels in the lowest quartile had significantly elevated levels of serum iron, TOS, and inflammatory cytokines, such as TNF-α, IL-1, and IL-6, while TAC levels were significantly lower in this quartile when compared with the upper quartile. CONCLUSIONS: Our findings showed that T2D patients with low frataxin mRNA levels showed a high degree of inflammation and oxidative stress. It is speculated that frataxin deficiency in T2D patients can contribute to the imbalance in mitochondrial iron homeostasis leading to the acceleration of oxidative stress and inflammation.


Assuntos
Biomarcadores/análise , Diabetes Mellitus Tipo 2/fisiopatologia , Inflamação/diagnóstico , Proteínas de Ligação ao Ferro/metabolismo , Estresse Oxidativo , RNA Mensageiro/metabolismo , Brasil/epidemiologia , Estudos de Casos e Controles , Feminino , Seguimentos , Humanos , Incidência , Inflamação/epidemiologia , Inflamação/genética , Inflamação/metabolismo , Proteínas de Ligação ao Ferro/genética , Masculino , Pessoa de Meia-Idade , Prognóstico , RNA Mensageiro/genética , Frataxina
4.
PLoS One ; 14(5): e0217223, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31150426

RESUMO

BACKGROUND: Although intake of fruits and vegetables seemed to have a protective effect on bone metabolism, its effect on fractures remains uncertain. METHODS: A systematic review of randomized controlled trials (RCTs) and cohort studies (PROSPERO: CRD42016041462) was performed. RCTs and cohort studies that evaluated the combined intake of fruits and vegetables in men and women aged over 50 years were included. We considered fractures as a primary outcome measure. Changes in bone markers were considered as secondary outcomes. The search strategy included the following descriptors: fruit, vegetables, vegetable products, bone and bones, bone fractures, postmenopausal osteoporosis, and osteoporosis. PubMed, Embase, and Cochrane Library were the databases used. The appraisal of the studies was performed by two independent reviewers, and discussed and agreed upon by both examiners. The data extracted from the RCTs and cohort studies were summarized separately. The risks of fractures were combined across studies using random models. Bone resorption marker (CTx) was summarized with standardized mean differences. The Grading of Recommendations Assessment, Development and Evaluation (GRADE) method was used to evaluate the strength of recommendations. RESULTS: Of the 1,192 studies screened, 13 articles were included in the systematic review and 10 were included in the pooled analysis (6 cohort studies and 4 RCTs). The six cohort studies included in the meta-analysis included a population of 225,062. The pooled hazard ratio (HR) (95% confidence interval (CI)) of the hip in five studies was 0.92 (0.87, 0.98). Its heterogeneity was moderate (I2 = 55.7%, p = 0.060), GRADE (⊕⊕⊕O). Two cohort studies evaluated the risk of any fracture; the HR was 0.90 (95% CI: 0.86-0.96), with aheterogeneity of 24.9% (p = 0.249, GRADE (⊕⊕⊕O)). There was no association between the bone resorption marker CTx and 3 months of fruit and vegetable intake evaluated by four RCTs, GRADE (⊕⊕O O). CONCLUSION: There was an association between the increase of at least one serving of fruits and vegetables per day and decreases in the risk of fractures. The level of evidence for this association is moderate.


Assuntos
Fraturas Ósseas/prevenção & controle , Frutas , Osteoporose/prevenção & controle , Verduras , Comportamento Alimentar , Fraturas Ósseas/epidemiologia , Humanos , Incidência , Osteoporose/epidemiologia
5.
Dis Markers ; 2019: 6025804, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31110596

RESUMO

BACKGROUND: Uric acid presents different roles in an organism. High serum uric acid concentrations may induce inflammatory pathways and promote kidney damage through different mechanisms. Therefore, this study investigated the association among high serum uric acid concentrations, renal tubular damage, and renal inflammation assessed via estimation of urinary kidney injury molecule-1 (KIM-1) and inflammatory cytokines in patients with type 2 diabetes (T2D). METHODS: Urinary concentrations of KIM-1, IL-1, IL-6, IL-10, and TNF-alpha, as well as other biochemical parameters, were assessed in 125 patients with T2D who were grouped into two groups based on the serum uric acid levels (<6.0 mg/dL and ≥6.0 mg/dL). Patients were also stratified according to the tertiles of serum uric acid concentrations. RESULTS: Urinary KIM-1, IL-1, IL-6, and TNF-alpha were higher in patients with serum uric acid concentrations ≥ 6.0 mg/dL. However, the differences between the groups were not statistically significant when the urinary values of KIM-1 and cytokines were normalized by the urinary creatinine concentration. Serum uric acid concentrations were significantly associated with urinary KIM-1 (values normalized by urinary creatinine concentration) and urinary TNF-alpha (absolute values and values normalized by urinary creatinine concentration), independent of the body mass index (BMI) and estimated glomerular filtration rate (eGFR). CONCLUSIONS: High serum uric acid concentrations were associated with high urinary KIM-1 levels accompanied by the increase of urinary proinflammatory cytokines in patients with T2D. However, normalization of urinary markers by urine creatinine concentration seems to influence the profile of the results.


Assuntos
Diabetes Mellitus Tipo 2/complicações , Nefropatias Diabéticas/sangue , Ácido Úrico/sangue , Idoso , Biomarcadores/sangue , Biomarcadores/urina , Creatinina/urina , Nefropatias Diabéticas/patologia , Nefropatias Diabéticas/urina , Feminino , Receptor Celular 1 do Vírus da Hepatite A/análise , Humanos , Interleucinas/urina , Masculino , Pessoa de Meia-Idade , Fator de Necrose Tumoral alfa/urina
6.
Mutat Res ; 811: 27-30, 2018 09.
Artigo em Inglês | MEDLINE | ID: mdl-30292071

RESUMO

Uric acid presents different roles in an organism, since it can act as an antioxidant or a pro-oxidant molecule. High serum uric acid levels may cause damage to several structures, including nucleic acids and its components. Therefore, in this study the association between increased serum uric acid concentrations and oxidation of nucleosides was investigated by assessment of urinary 8-hydroxydeoxyguanosine (8-OHdG) in patients with type 2 diabetes (T2D) and in healthy individuals. Urinary 8-OHdG and biochemical parameters were assessed in 61 patients who were initially grouped into 2 groups based on the median serum uric acid levels (<5.3 mg/dL and ≥5.3 mg/dL). Urinary 8-OHdG was higher in patients with T2D and serum uric acid levels ≥5.3 mg/dL, when compared with the patients with serum uric acid levels <5.3 mg/dL; however, co-occurrence of high serum uric acid with high urinary 8-OHdG was not observed in healthy individuals. A significant positive correlation between 8-OHdG and uric acid (r = 0.40, P < 0.01) was observed in patients with T2D. High serum uric acid levels were associated with high urinary 8-OHdG levels in patients with T2D, and this association was independent of gender, hypertension, body mass index, and serum creatinine.


Assuntos
Desoxiguanosina/análogos & derivados , Diabetes Mellitus Tipo 2/metabolismo , Nucleosídeos/metabolismo , Ácido Úrico/sangue , 8-Hidroxi-2'-Desoxiguanosina , Adulto , Idoso , Creatinina/sangue , Desoxiguanosina/urina , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Oxirredução
7.
Sci Rep ; 8(1): 7838, 2018 05 18.
Artigo em Inglês | MEDLINE | ID: mdl-29777162

RESUMO

The survival of HIV-infected patients has increased with the advent of antiretroviral therapy with the emergence of new comorbidities. Vertebral fracture is a manifestation of reduced bone strength and osteoporosis. This study aims to assess the frequency of spine fractures in HIV-positive men and women aged over 18 years. We performed a systematic review of randomized controlled trials, cohort studies, cross-sectional studies, and case-control studies. Studies that evaluated morphometric and/or clinical vertebral fracture were included. In total 488 studies were found, of which 53 had their full texts evaluated. A total of 85,411 HIV positive individuals were identified in 26 studies. The meta-analysis of the prevalence of vertebral fractures included 12 studies with 10,593 subjects. The prevalence was 11.1% [95% confidence interval (95% CI) 4.5%, 25.0%, I2 98.2% p < 0.00001]. When we evaluated independently studies of clinical vertebral fracture and morphometric vertebral fracture, the prevalence was 3.9% (95% CI 0.9, 15.8, I2 96.4% p < 0.00001) and 20.2% (95% CI 15.7%, 25.6%, I2 69.9% p = 0.003) respectively. HIV-infected individuals had an odds ratio of vertebral fractures of 2.3 (95% CI 1.37, 3.85, I2 98.2% p < 0.00001) when compared with HIV-uninfected patients (n = 9 studies). In conclusion, HIV-positive subjects had a higher risk of vertebral fractures when compared with HIV-negative subjects.


Assuntos
Infecções por HIV/epidemiologia , Fraturas da Coluna Vertebral/epidemiologia , Estudos de Casos e Controles , Estudos Transversais , Feminino , Humanos , Masculino , Razão de Chances , Prevalência , Ensaios Clínicos Controlados Aleatórios como Assunto , Fraturas da Coluna Vertebral/complicações
9.
Phytother Res ; 32(1): 58-64, 2018 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-29027270

RESUMO

Nutritional factors have been associated with osteoporosis and fractures. The intake of coffee may increase the risk of fracture whereas the intake of black and green tea is associated with its reduction. Recently, consumption of yerba mate was associated with increased bone mineral density in postmenopausal women. Nonetheless, its influence on fracture is not known. The aim of this study was to evaluate the effect of yerba mate tea intake on fractures, bone markers, calcium homeostasis, and oxidative stress in postmenopausal women. A case-control study was carried out in South Brazil, 46 women with fractures and 49 controls completed the study. There was no significant difference between the frequency of fractures in women who drank mate tea and women who did not (48.3% vs. 48.5%, p = .99). Moreover, there was no significant difference concerning the serum levels of total calcium, phosphorus, PTH, vitamin D, P1NP, and CTX in the subjects with the history of yerba mate use when compared to controls. Higher serum levels of NOx were found in women who drank the yerba mate infusion. In conclusion, the yerba mate intake is not associated with fracture, and it appears to have a neutral effect on the bone metabolism.


Assuntos
Osso e Ossos/efeitos dos fármacos , Ilex paraguariensis/química , Osteoporose/prevenção & controle , Extratos Vegetais/química , Estudos de Casos e Controles , Feminino , Humanos , Pessoa de Meia-Idade , Pós-Menopausa
10.
Eur J Obstet Gynecol Reprod Biol ; 203: 162-6, 2016 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-27318183

RESUMO

OBJECTIVE: The aim of this study was to investigate the prevalence of fracture in women aged >55 years with self-reported premenopausal hirsutism and/or oligomenorrhea. STUDY DESIGN: A cross-sectional study including 1057 post-menopausal women aged >55 years who were treated in a primary care facility in Santa Maria, South Brazil, from March 2013 through August 2013. Data were collected using a standardized questionnaire for characteristics including fracture history, medication use, and reproductive history (oligomenorrhea, hirsutism, miscarriage, the diagnosis or treatment of hypothyroidism, hyperprolactinemia, or infertility). RESULTS: A non-significant trend towards an increased prevalence of all fragility fractures was observed in women with premenopausal hirsutism and/or oligomenorrhea when compared to those without (20.4% vs. 15.7%). After correction for age, falls, and comorbidities, fracture prevalence was significantly higher in the lower leg (OR 3.1 [CI 1.1-8.6]; P=0.029), and humerus (OR 2.6 [CI 1.2-5.4]; P=0.015) in the women with hirsutism and/or oligomenorrhea. CONCLUSION: This is a hypothesis-generating study which evaluated the association between hirsutism and/or oligomenorrhea and fractures in postmenopausal women. Our results suggest that premenopausal hirsutism and/or oligomenorrhea may be associated with an increased risk of fracture postmenopause, particularly in the humerus and lower leg.


Assuntos
Hirsutismo/fisiopatologia , Fraturas do Úmero/etiologia , Oligomenorreia/fisiopatologia , Osteoporose Pós-Menopausa/fisiopatologia , Fraturas por Osteoporose/etiologia , Fraturas da Tíbia/etiologia , Idoso , Brasil/epidemiologia , Comorbidade , Estudos Transversais , Feminino , Fíbula , Inquéritos Epidemiológicos , Hirsutismo/epidemiologia , Humanos , Fraturas do Úmero/epidemiologia , Pessoa de Meia-Idade , Oligomenorreia/epidemiologia , Osteoporose Pós-Menopausa/epidemiologia , Fraturas por Osteoporose/epidemiologia , Pré-Menopausa , Prevalência , Atenção Primária à Saúde , Risco , Autorrelato , Fraturas da Tíbia/epidemiologia
11.
Mutat Res ; 782: 17-22, 2015 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-26520687

RESUMO

Urinary markers of nucleic acid oxidation may be useful biomarkers in diabetes. It has been demonstrated that T2DM patients have an increased level of oxidative DNA damage; however, it is unclear whether increased DNA damage may be related to a greater degree of inflammation and insulin resistance. Thus, the aim of this present study was to investigate the relation of the impact of oxidative DNA damage, assessed by urinary 8-OHdG, on the levels of inflammatory cytokines, as well as insulin resistance. In addition, we also investigated the diagnostic ability of urinary 8-OHdG in the identification of microvascular complications in T2DM.A case-control study, enrolling 22 healthy controls and 54 subjects with T2DM, was performed to evaluate the relation between oxidative DNA damage and interleukin-6 (IL-6), IL-1,tumor necrosis factor-alpha (TNF-α), IL-10, and Homeostasis Model Assessment (HOMA-IR) index. T2DM patients presented higher urinary 8-OHdG, IL-6, IL-1, TNF-α levels and HOMA-IR, and lower IL-10 levels than control subjects. Moreover, urinary 8-OHdG levels were significantly higher in the group T2DM with microvascular complications when compared to the without complications. The areas under the curve for urinary 8-OHdG and urinary albumin were, respectively, 0.836 (P<0.001) and 0.786 (P=0.002). Thus, urinary 8-OHdG has a slightly higher ability to discriminate microvascular complications in T2DM compared with urinary albumin. It was also demonstrated that T2DM patients with higher median of urinary 8-OHdG had significantly elevated levels of IL-6, TNF-α and HOMA-IR, and decreased IL-10 levels. Our findings showed that T2DM patients with higher urinary 8-OHdG levels showed a greater inflammatory degree and higher insulin resistance. It is possible to speculate that T2DM patients present a cascade of events as increasing metabolic abnormalities such as insulin resistance and inflammatory activation, as well as increased ROS generation factors that may contribute directly to greater oxidative DNA damage.


Assuntos
Dano ao DNA , Diabetes Mellitus Tipo 2 , Angiopatias Diabéticas , Resistência à Insulina , Microvasos , Estresse Oxidativo/genética , 8-Hidroxi-2'-Desoxiguanosina , Biomarcadores/urina , Estudos de Casos e Controles , Citocinas/sangue , Desoxiguanosina/análogos & derivados , Desoxiguanosina/urina , Diabetes Mellitus Tipo 2/complicações , Diabetes Mellitus Tipo 2/genética , Diabetes Mellitus Tipo 2/imunologia , Angiopatias Diabéticas/genética , Angiopatias Diabéticas/imunologia , Angiopatias Diabéticas/urina , Feminino , Humanos , Modelos Lineares , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo/imunologia , Curva ROC
12.
J Bone Miner Res ; 28(8): 1771-7, 2013 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-23371035

RESUMO

A site-dependent association between obesity and fracture has been reported in postmenopausal women. In this study we investigated the relationship between body mass index (BMI) and fracture at different skeletal sites in older men (≥65 years). We carried out a population-based cohort study using data from the Sistema d'Informació per al Desenvolupament de l'Investigació en Atenció Primària (SIDIAP(Q) ) database. SIDIAP(Q) contains the primary care and hospital admission computerized medical records of >1300 general practitioners (GPs) in Catalonia (Northeast Spain), with information on a representative 30% of the population (>2 million people). In 2007, 186,171 men ≥65 years were eligible, of whom 139,419 (74.9%) had an available BMI measurement. For this analysis men were categorized as underweight/normal (BMI < 25 kg/m(2) , n = 26,298), overweight (25 ≤ BMI < 30 kg/m(2) , n = 70,851), and obese (BMI ≥ 30 kg/m(2) , n = 42,270). Incident fractures in the period 2007 to 2009 were ascertained using International Classification of Diseases, 10th edition (ICD-10) codes. A statistically significant reduction in clinical spine and hip fractures was observed in obese (relative risk [RR], 0.65; 95% confidence interval [CI], 0.53-0.80 and RR, 0.63; 95% CI, 0.54-0.74, respectively), and overweight men (RR, 0.77; 95% CI, 0.64-0.92 and RR, 0.63; 95% CI 0.55-0.72, respectively) when compared with underweight/normal men. Additionally, obese men had significantly fewer wrist/forearm (RR, 0.77; 95% CI, 0.61-0.97) and pelvic (RR, 0.44; 95% CI, 0.28-0.70) fractures than underweight/normal men. Conversely, multiple rib fractures were more frequent in overweight (RR, 3.42; 95% CI, 1.03-11.37) and obese (RR, 3.96; 95% CI, 1.16-13.52) men. In this population-based cohort of older men, obesity was associated with a reduced risk of clinical spine, hip, pelvis, and wrist/forearm fracture and increased risk of multiple rib fractures when compared to normal or underweight men. Further work is needed to identify the mechanisms underlying these associations.


Assuntos
Fraturas Ósseas/complicações , Fraturas Ósseas/patologia , Obesidade/complicações , Idoso , Idoso de 80 Anos ou mais , Índice de Massa Corporal , Estudos de Coortes , Feminino , Fraturas Ósseas/epidemiologia , Humanos , Incidência , Estimativa de Kaplan-Meier , Masculino , Obesidade/epidemiologia , Espanha/epidemiologia
13.
J Bone Miner Metab ; 26(6): 603-8, 2008.
Artigo em Inglês | MEDLINE | ID: mdl-18979160

RESUMO

We designed a randomized, double-blind, controlled clinical trial to compare the effect of two regimens for administering cholecalciferol on the serum 25-hydroxycholecalciferol [25(OH)D] levels and in the reversion of secondary hyperparathyroidism in the elderly living in a low-income housing unit in the city of Porto Alegre, southern Brazil. We studied 28 individuals ranging in age from 65 to 102 years with serum parathyroid hormone (PTH) levels greater than 48 pg/ml and normal or reduced serum calcium levels. Subjects were randomized to receive oral cholecalciferol, as a single dose of 300 000 IU (group 1) or 800 IU (group 2) daily for 9 months. Both groups received 1250 mg calcium carbonate per day. Serum 25(OH)D and PTH levels were measured at baseline and after 1, 2, 3, 6, and 9 months. Serum 25(OH)D levels in group 1 were significantly higher than in group 2 during the study (P < 0.001). After 1 (P < 0.001) and 2 (P < 0.04) months of treatment, mean serum 25(OH)D levels were higher in group 1. The number of subjects who reached serum 25(OH)D levels >/=20 ng/dl was higher in group 1, after the first (P < 0.001) and third (P = 0.008) months. In the short term, a single 300 000 IU oral dose of vitamin D(3) was more effective than 800 IU per day to increase serum 25(OH)D levels in elderly persons, living in a low-income housing unit, who were taking 500 mg elementary calcium supplement per day.


Assuntos
Conservadores da Densidade Óssea , Calcifediol/sangue , Colecalciferol , Hiperparatireoidismo Secundário , Hormônio Paratireóideo/sangue , Pobreza , Habitação Popular , Idoso , Idoso de 80 Anos ou mais , Conservadores da Densidade Óssea/administração & dosagem , Conservadores da Densidade Óssea/sangue , Conservadores da Densidade Óssea/uso terapêutico , Brasil , Cálcio da Dieta , Colecalciferol/administração & dosagem , Colecalciferol/uso terapêutico , Suplementos Nutricionais , Método Duplo-Cego , Humanos , Hiperparatireoidismo Secundário/sangue , Hiperparatireoidismo Secundário/tratamento farmacológico , Vitamina D/administração & dosagem , Deficiência de Vitamina D
14.
Endocrine ; 33(1): 95-100, 2008 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-18401764

RESUMO

OBJECTIVES: Hypovitaminosis D (HD) and secondary hyperparathyroidism (SHP) are common in elders, and many factors could contribute to them. The objectives of this study were to estimate the prevalence of HD, SHP, and its associated factors, in individuals living in nonprofit homes for elders in south Brazil. Design Cross-sectional study. METHODS: Serum 25-hydroxyvitamin D 25(OH)D, intact parathyroid hormone (PTH), total calcium, phosphorus, alkaline phosphatase, magnesium, creatinine, and albumin levels were measured in late spring, November, 2005. The presence of factors potentially related with HD and SHP-age, sex, weight, height, skin phototype, sun exposure, exercise, smoking, use of < or = 5 medications or diuretics or alcohol, and daily calcium ingestion. RESULTS: 102 subjects age 77.8 +/- 9.0 were included in the study. HD was found in 85.7% and SHP in 53% of the subjects. The estimated daily calcium ingestion was 720 mg. There was no association between serum 25(OH)D levels and any of the risk factors evaluated. Serum 25(OH)D levels were correlated with serum PTH (r = -0.358, P = 0.000), calcium (r = 0.306, P = 0.002), and albumin (r = 0.253, P = 0.011) levels. In univariate analysis, SHP was positively associated with age (P = 0.006), and female sex (0.007); and negatively associated with sunlight exposure (P = 0.020), GFR (P = 0.000), Ln25(OH)D (P = 0.002), and total serum calcium (P = 0.024). After multivariate model adjustment, age [OR 1.09 (CI 1.01-1.18); P = 0.024], Ln25(OH)D [OR 0.92 (CI 0.08-0.74); P = 0.013], GFR [OR 0.96 (CI 0.92-0.99); P = 0.013], and hydrochlorothiazide treatment [OR 7.63 (CI 1.67-34.9); P = 0.008] were independently associated with SHP. CONCLUSIONS: HD and SHP are highly prevalent in elders living in old-age homes. No associations were established between common risk factors and low serum levels of 25(OH)D levels; however, SHP was independently related with age, 25(OH)D, GFR, and hydrochlorothiazide use.


Assuntos
Idoso , Hiperparatireoidismo Secundário/epidemiologia , Organizações sem Fins Lucrativos , Características de Residência , Deficiência de Vitamina D/epidemiologia , Idoso de 80 Anos ou mais , Brasil/epidemiologia , Colecalciferol/análise , Colecalciferol/sangue , Feminino , Humanos , Hiperparatireoidismo Secundário/sangue , Masculino , Hormônio Paratireóideo/sangue , Prevalência , Deficiência de Vitamina D/sangue
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