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1.
Nutrients ; 14(14)2022 Jul 15.
Artigo em Inglês | MEDLINE | ID: mdl-35889867

RESUMO

The aim was to investigate, among pregnant women, (1) the use of food supplements and (2) the awareness of food supplement recommendations and beliefs about food supplement use in four European countries: Finland, Italy, Poland, and the United Kingdom. The participants (n = 1804) completed an online questionnaire with predefined statements. Daily intakes of vitamins and minerals were calculated using uploaded pictures or weblinks of the supplement packages. Country differences were assessed. Most participants (91%) used at least one food supplement during pregnancy. A prenatal multivitamin was the most commonly used supplement type (84% of the users), and 75% of the participants thought consumption of multivitamin is recommended. Of the participants, 81% knew that folic acid is recommended during pregnancy while 58% knew the recommendation for vitamin D. In 19% of the supplement users, the daily safe upper intake limit of at least one nutrient was exceeded. Nevertheless, most participants agreed that they knew which supplements (91%) and doses of supplements (87%) needed to be used during pregnancy. To conclude, the majority of the participants used food supplements, but lower proportions knew and adhered to the recommended intakes. Between-country differences were observed in the use and knowledge of and beliefs regarding supplements. The results suggest a need for assessment and monitoring of supplement use in antenatal care to ensure appropriate use.


Assuntos
Suplementos Nutricionais , Gestantes , Feminino , Humanos , Minerais , Gravidez , Inquéritos e Questionários , Vitaminas
2.
JAMA ; 325(4): 353-362, 2021 01 26.
Artigo em Inglês | MEDLINE | ID: mdl-33427870

RESUMO

Importance: Antibiotics are an effective and safe alternative to appendectomy for managing uncomplicated acute appendicitis, but the optimal antibiotic regimen is not known. Objective: To compare oral antibiotics with combined intravenous followed by oral antibiotics in the management of computed tomography-confirmed uncomplicated acute appendicitis. Design, Setting, and Participants: The Appendicitis Acuta (APPAC) II multicenter, open-label, noninferiority randomized clinical trial was conducted from April 2017 until November 2018 in 9 Finnish hospitals. A total of 599 patients aged 18 to 60 years with computed tomography-confirmed uncomplicated acute appendicitis were enrolled in the trial. The last date of follow-up was November 29, 2019. Interventions: Patients randomized to receive oral monotherapy (n = 295) received oral moxifloxacin (400 mg/d) for 7 days. Patients randomized to receive intravenous antibiotics followed by oral antibiotics (n = 288) received intravenous ertapenem (1 g/d) for 2 days followed by oral levofloxacin (500 mg/d) and metronidazole (500 mg 3 times/d) for 5 days. Main Outcomes and Measures: The primary end point was treatment success (≥65%) for both groups, defined as discharge from hospital without surgery and no recurrent appendicitis during 1-year follow-up, and to determine whether oral antibiotics alone were noninferior to intravenous and oral antibiotics, with a margin of 6% for difference. Results: Among 599 patients who were randomized (mean [SD] age, 36 [12] years; 263 [44%] women), 581 (99.7%) were available for the 1-year follow-up. The treatment success rate at 1 year was 70.2% (1-sided 95% CI, 65.8% to ∞) for patients treated with oral antibiotics and 73.8% (1-sided 95% CI, 69.5% to ∞) for patients treated with intravenous followed by oral antibiotics. The difference was -3.6% ([1-sided 95% CI, -9.7% to ∞]; P = .26 for noninferiority), with the confidence limit exceeding the noninferiority margin. Conclusion and Relevance: Among adults with uncomplicated acute appendicitis, treatment with 7 days of oral moxifloxacin compared with 2 days of intravenous ertapenem followed by 5 days of levofloxacin and metronidazole resulted in treatment success rates greater than 65% in both groups, but failed to demonstrate noninferiority for treatment success of oral antibiotics compared with intravenous followed by oral antibiotics. Trial Registration: ClinicalTrials.gov Identifier: NCT03236961; EudraCT Identifier: 2015-003633-10.


Assuntos
Antibacterianos/uso terapêutico , Apendicite/tratamento farmacológico , Doença Aguda , Administração Intravenosa , Administração Oral , Adulto , Antibacterianos/administração & dosagem , Antibacterianos/efeitos adversos , Apendicectomia , Apendicite/diagnóstico por imagem , Apendicite/cirurgia , Quimioterapia Combinada , Ertapenem/uso terapêutico , Feminino , Seguimentos , Humanos , Levofloxacino/uso terapêutico , Masculino , Metronidazol/uso terapêutico , Pessoa de Meia-Idade , Moxifloxacina/uso terapêutico , Tomografia Computadorizada por Raios X , Adulto Jovem
3.
Eur J Nucl Med Mol Imaging ; 47(3): 665-673, 2020 03.
Artigo em Inglês | MEDLINE | ID: mdl-31879814

RESUMO

PURPOSE: Based on in vitro studies, it is known that androgen deprivation therapy (ADT) increases prostate-specific membrane antigen (PSMA) expression. Therefore, we hypothesised that ADT improves the performance of PSMA-PET imaging in primary staging of prostate cancer. The purpose of the study was to demonstrate the time course effect of ADT on PSMA uptake in different types of metastatic lesions evaluated with 68Ga-PSMA-11 PET/MRI. METHODS: Nine men with treatment-naïve prostate cancer were enrolled to a prospective, registered (NCT03313726) clinical trial. A 68Ga-PSMA-11 PET/MRI was performed once before and 3 times post-ADT (degarelix, Firmagon). Change of maximum standardised uptake values (SUVmax) in prostate, lymph nodes, bone metastases, and physiologically PSMA-avid organs were evaluated in a time frame of 1-8 weeks. RESULTS: All patients reached castration levels within 10 days, and 50% decrease in prostate-specific antigen (PSA) concentration was observed 14 days post-ADT. A heterogeneous increase in PSMA uptake was observed 3 to 4 weeks post-ADT. This phenomenon was definitively more evident in bone metastases: 13 (57%) of the metastasis, with a mean (range) SUVmax increase of 77% (8-238%). In one patient, already having bone metastases at baseline, three new bone metastases were observed post-ADT. Of lesions with reduced SUVmax, none disappeared. CONCLUSIONS: Both in patient and region level, increase in PSMA uptake post-ADT is heterogenous and is seen most evidently in bone metastases. Preliminary results on a small cohort of patients suggest the clinical impact of ADT on improving the performance of 68Ga-PSMA PET in staging seems to be minor. However, the optimal imaging time point might be 3 to 4 weeks post-ADT. Since none of the metastases with decreasing SUVmax disappeared, it seems that short-term usage of ADT does not interfere with the interpretation of 68Ga-PSMA PET. TRIAL REGISTRATION: NCT03313726, registered 18 October 2017; EUDRA-CT, 2017-002345-29.


Assuntos
Antagonistas de Androgênios , Neoplasias da Próstata , Antagonistas de Androgênios/uso terapêutico , Androgênios , Ácido Edético/análogos & derivados , Isótopos de Gálio , Radioisótopos de Gálio , Humanos , Imageamento por Ressonância Magnética , Masculino , Oligopeptídeos , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Estudos Prospectivos , Neoplasias da Próstata/diagnóstico por imagem , Neoplasias da Próstata/tratamento farmacológico , Tomografia Computadorizada por Raios X
4.
Dement Geriatr Cogn Disord ; 48(1-2): 68-78, 2019.
Artigo em Inglês | MEDLINE | ID: mdl-31514198

RESUMO

BACKGROUND: Atrophy of the deep gray matter (DGM) has been associated with a risk of conversion from mild cognitive impairment (MCI) to Alzheimer's disease (AD) and the degree of cognitive impairment. However, specific knowledge of the associations between degenerative DGM changes and neurocognitive functions remains limited. OBJECTIVE: To examine degenerative DGM changes and evaluate their association with neurocognitive functions. METHOD: We examined DGM volume changes with tensor-based morphometry (TBM) and analyzed the relationships between DGM changes and neurocognitive functions in control (n = 58), MCI (n = 38), and AD (n = 58) groups with multiple linear regression analyses. RESULTS: In all DGM areas, the AD group had the largest changes in TBM volume. The differences in TBM volume changes were larger between the control group and the AD group than between the other pairs of groups. In the AD group, volume changes of the right thalamus were significantly associated with episodic memory, learning, and semantic processing. Significant or trend-level associations were identified between bilateral caudate nucleus changes and episodic memory as well as semantic processing. In the control and MCI groups, very few significant associations emerged. CONCLUSIONS: Atrophy of the DGM structures, especially the thalamus and caudate nucleus, is related to cognitive impairment in AD. DGM atrophy is associated with tests reflecting both subcortical and cortical cognitive functions.


Assuntos
Doença de Alzheimer , Cognição/fisiologia , Disfunção Cognitiva , Substância Cinzenta , Imageamento por Ressonância Magnética/métodos , Tálamo , Idoso , Doença de Alzheimer/diagnóstico , Doença de Alzheimer/psicologia , Atrofia , Disfunção Cognitiva/diagnóstico , Disfunção Cognitiva/psicologia , Correlação de Dados , Feminino , Substância Cinzenta/diagnóstico por imagem , Substância Cinzenta/patologia , Humanos , Masculino , Testes de Estado Mental e Demência , Tamanho do Órgão , Tálamo/diagnóstico por imagem , Tálamo/patologia
5.
J Sch Nurs ; 35(4): 279-286, 2019 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-29781381

RESUMO

Daytime sleepiness and different symptoms are common problems affecting health and well-being of schoolchildren. This population-based cohort study included 568 children who were followed from ages 10 to 15 years. Daytime sleepiness, headache, abdominal pain, and psychological symptoms (depression, irritability or bad temper, nervousness, anxiety, and dejection) were assessed by self-administered questionnaires. The prevalence of frequent daytime sleepiness was 13% at the ages of 10 and 12 years and increased significantly up to 24% at the age of 15 (p < .0001). Daytime sleepiness as well as psychological symptoms were positively associated with headache and abdominal pain from ages 10 to 15 years. Headache in girls at the ages of 10 predicted the occurrence of headache at the age of 15. School nurses and other professionals need to understand the importance of a holistic evaluation of sleep and different symptoms in children. There is also a need for interventions targeting several co-occurring symptoms.


Assuntos
Dor Abdominal/epidemiologia , Fadiga/epidemiologia , Cefaleia/epidemiologia , Distúrbios do Início e da Manutenção do Sono/epidemiologia , Atividades Cotidianas , Adolescente , Criança , Estudos de Coortes , Comorbidade , Feminino , Humanos , Masculino , Privação do Sono/epidemiologia
6.
Cont Lens Anterior Eye ; 42(4): 428-433, 2019 08.
Artigo em Inglês | MEDLINE | ID: mdl-30497904

RESUMO

PURPOSE: To investigate the effects of a sea buckthorn oil and sodium hyaluronate-containing eyelid spray emulsion (SB spray) on dry eye. METHODS: A randomized controlled study was carried out. Adults (25-70 years) with Ocular Surface Disease Index (OSDI) ≥20 and moderate or severe dryness, burning or grittiness of the eyes were included. In study part one (n = 2), SB spray was used on both closed eyelids four times in one day. In part two (n = 10), SB spray was used on one randomized eyelid, and a commercial reference spray on the other for nine days. In part three (n = 40), eyes were randomized to one eye receiving SB spray and an untreated control for 1.5 months. Dry eye tests were carried out at baseline, during, and at the end of each study section. Symptoms were recorded in questionnaires and daily logs. RESULTS: In part one, the SB spray was well tolerated. In part two, OSDI decreased significantly (P = 0.022) in the SB spray eye compared to the reference spray, indicating a beneficial effect on symptoms. In part three, OSDI in the SB spray eye decreased significantly compared to the untreated control (P = 0.0007). The scores for dryness at the study end were lower in the SB spray eye compared to control (P = 0.0070). Symptom sums and frequencies of dryness (sum P = 0.0046, frequency P = 0.0016) and watering (sum P = 0.0003, frequency P = 0.013) in the daily logs were lower in the eye treated with SB spray. CONCLUSIONS: SB spray on closed eyelids relieved the symptoms of dry eye.


Assuntos
Aerossóis , Síndromes do Olho Seco/tratamento farmacológico , Hippophae/química , Ácido Hialurônico/uso terapêutico , Óleos de Plantas/uso terapêutico , Adulto , Idoso , Síndromes do Olho Seco/diagnóstico , Síndromes do Olho Seco/fisiopatologia , Emulsões/química , Feminino , Humanos , Ácido Hialurônico/química , Masculino , Pessoa de Meia-Idade , Nebulizadores e Vaporizadores , Soluções Oftálmicas , Concentração Osmolar , Óleos de Plantas/química , Sementes/química , Inquéritos e Questionários , Lágrimas/química , Lágrimas/fisiologia
7.
BMC Syst Biol ; 11(1): 65, 2017 Jun 28.
Artigo em Inglês | MEDLINE | ID: mdl-28659168

RESUMO

BACKGROUND: α2-adrenoceptors are important regulators of vascular tone and blood pressure. Regulation of cell proliferation is a less well investigated consequence of α2-adrenoceptor activation. We have previously shown that α2B-adrenoceptor activation stimulates proliferation of vascular smooth muscle cells (VSMCs). This may be important for blood vessel development and plasticity and for the pathology and therapeutics of cardiovascular disorders. The underlying cellular mechanisms have remained mostly unknown. This study explored pathways of regulation of gene expression and intracellular signaling related to α2B-adrenoceptor-evoked VSMC proliferation. RESULTS: The cellular mechanisms and signaling pathways of α2B-adrenoceptor-evoked proliferation of VSMCs are complex and include redundancy. Functional enrichment analysis and pathway analysis identified differentially expressed genes associated with α2B-adrenoceptor-regulated VSMC proliferation. They included the upregulated genes Egr1, F3, Ptgs2 and Serpine1 and the downregulated genes Cx3cl1, Cav1, Rhoa, Nppb and Prrx1. The most highly upregulated gene, Lypd8, represents a novel finding in the VSMC context. Inhibitor library screening and kinase activity profiling were applied to identify kinases in the involved signaling pathways. Putative upstream kinases identified by two different screens included PKC, Raf-1, Src, the MAP kinases p38 and JNK and the receptor tyrosine kinases EGFR and HGF/HGFR. As a novel finding, the Src family kinase Lyn was also identified as a putative upstream kinase. CONCLUSIONS: α2B-adrenoceptors may mediate their pro-proliferative effects in VSMCs by promoting the activity of bFGF and PDGF and the growth factor receptors EGFR, HGFR and VEGFR-1/2. The Src family kinase Lyn was also identified as a putative upstream kinase. Lyn is known to be expressed in VSMCs and has been identified as an important regulator of GPCR trafficking and GPCR effects on cell proliferation. Identified Ser/Thr kinases included several PKC isoforms and the ß-adrenoceptor kinases 1 and 2. Cross-talk between the signaling mechanisms involved in α2B-adrenoceptor-evoked VSMC proliferation thus appears to involve PKC activation, subsequent changes in gene expression, transactivation of EGFR, and modulation of kinase activities and growth factor-mediated signaling. While many of the identified individual signals were relatively small in terms of effect size, many of them were validated by combining pathway analysis and our integrated screening approach.


Assuntos
Perfilação da Expressão Gênica , Músculo Liso Vascular/citologia , Receptores Adrenérgicos alfa 2/metabolismo , Transdução de Sinais , Animais , Linhagem Celular , Proliferação de Células/efeitos dos fármacos , Dexmedetomidina/farmacologia , Avaliação Pré-Clínica de Medicamentos , Cinética , Análise de Sequência com Séries de Oligonucleotídeos , Monoéster Fosfórico Hidrolases/antagonistas & inibidores , Inibidores de Proteínas Quinases/farmacologia , Transdução de Sinais/efeitos dos fármacos
8.
Clin Endocrinol (Oxf) ; 84(6): 837-44, 2016 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-26725707

RESUMO

OBJECTIVE: Intermittent dosing may improve adherence to vitamin D therapy. Dosing regimen should maintain optimal serum 25-hydroxyvitamin D (25OHD) levels over all the year. We compared two dosing regimens, the primary outcome being the percentage of 25OHD measurements reaching the targets of 75 nmol/l or 50 nmol/l after baseline. DESIGN: Randomized, placebo-controlled parallel group comparison. PATIENTS: Sixty women aged 75·0 ± 2·9 years. INTERVENTIONS: 100 000 IU (group 1D) or 200 000 IU (2D) of vitamin D3 or placebo orally every 3 months plus calcium 1 g daily for 1 year. MEASUREMENTS: Serum 25OHD, 1,25-dihydroxyvitamin D, PTH, sclerostin, ionized calcium, urinary calcium, renal function, bone turnover markers. RESULTS: Serum 25OHD increased, but the difference between two doses was of borderline significance (P = 0·0554; area under curve analysis). Immediate postadministrative increases were higher in the 2D vs 1D group (P < 0·05) after 3 and 6 months' dosing. In the 1D and 2D groups, 51·2% and 57·7% of all on-treatment measurements reached the target of 75 nmol/l. PTH levels differed marginally (P = 0·0759) due to tendency to lowering immediately after vitamin D boluses. Urinary calcium differed between the groups (P = 0·0193) due to increases 1 week after vitamin D dosing. CONCLUSIONS: The doses of 100 000 or 200 000 IU of oral cholecalciferol every 3 months were not capable of stabilizing 25OHD levels over the target of 75 nmol/l over the year. To improve the efficacy of high-dose vitamin D therapy, the interval between boluses has to be shortened instead of increasing their size.


Assuntos
Colecalciferol/administração & dosagem , Vitamina D/análogos & derivados , Idoso , Cálcio/administração & dosagem , Cálcio/urina , Colecalciferol/uso terapêutico , Suplementos Nutricionais , Relação Dose-Resposta a Droga , Esquema de Medicação , Feminino , Humanos , Vitamina D/sangue
9.
Eur J Endocrinol ; 162(1): 183-9, 2010 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19841043

RESUMO

OBJECTIVE: Concentrations of 50 and 75 nmol/l are proposed as serum 25-hydroxyvitamin D (25(OH)D) target for older people from the view of bone health. We evaluated vitamin D status of elderly Finnish women in light of these definitions, its relationship to bone mineral density (BMD) and turnover, and improvement by summer sunshine. DESIGN: Population-based study. METHODS: A total of 1604 ambulatory women aged 62-79 years were studied; 66% used vitamin D supplements. Serum 25(OH)D(3) was measured with HPLC before and after summer, and heel BMD in spring. In subgroups, serum parathyroid hormone (PTH) and type I procollagen aminoterminal propeptide (PINP) were analyzed. RESULTS: In spring, 60.3% of the women had 25(OH)D(3)

Assuntos
Densidade Óssea/fisiologia , Colecalciferol/sangue , Estações do Ano , Luz Solar , Vitamina D/análogos & derivados , Idoso , Feminino , Finlândia/epidemiologia , Seguimentos , Humanos , Pessoa de Meia-Idade , Vitamina D/sangue , Deficiência de Vitamina D/sangue , Deficiência de Vitamina D/diagnóstico , Deficiência de Vitamina D/epidemiologia
10.
Clin Endocrinol (Oxf) ; 72(4): 455-61, 2010 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-19486025

RESUMO

OBJECTIVE: Daily dosing of vitamin D supplements may be difficult among older people. Infrequent administration of 'megadoses' controlled by health care personnel may overcome adherence problem. We compared the efficacy and safety of two oral dosages (800 IU daily or 97333 IU four monthly) of vitamin D(3) resulting in the equal annual dose of 292000 IU. DESIGN: Randomized, double-blind, double-dummy parallel group comparison. Patients Forty women aged 69.3-78.8 years. INTERVENTIONS: Vitamin D(3) 400 IU twice daily (D group) or vitamin D(3) oil 97333 IU every 4 months (4 M group) for 1 year. All received 1 g of calcium daily. MEASUREMENTS: Serum 25-hydroxyvitamin D(3) [25(OH)D(3)] in relation to the target levels of 50-75 nmol/l, PTH, serum type I procollagen aminoterminal propeptide (PINP), serum and urine calcium, renal function. RESULTS: A quantity of 25OHD(3) increased more in D group than in 4 M group (P < 0.0001). All participants in D group and 67% in 4 M group had 25(OH)D(3) above 50 nmol/l at 12 months; the target level of 75 nmol/l was reached by 47% and 28% respectively. PTH did not show any seasonal perturbation in either group. PINP declined and urinary calcium rose similarly in the study groups over time (P < 0.0001). Renal function did not worsen in either group. CONCLUSIONS: In terms of serum 25(OH)D(3) concentrations, 800 IU daily was more efficient than a 97333 IU every 4 months. However, to increase adherence, the latter is still worth developing. Both treatments increased urinary excretion of calcium, but did not worsen renal function.


Assuntos
Colecalciferol/administração & dosagem , Deficiência de Vitamina D/tratamento farmacológico , Idoso , Cálcio/sangue , Cálcio/urina , Método Duplo-Cego , Feminino , Humanos , Testes de Função Renal , Hormônio Paratireóideo/sangue , Cooperação do Paciente , Fragmentos de Peptídeos/sangue , Pró-Colágeno/sangue , Vitamina D/análogos & derivados , Vitamina D/sangue , Deficiência de Vitamina D/sangue
11.
Bone ; 37(2): 267-73, 2005 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-15964254

RESUMO

This prospective study was aimed at evaluating risk factors for symptomatic stress fractures among 179 Finnish male military recruits, aged 18 to 20 years. The subjects were studied in the very beginning of the military service of 6 to 12 months in summer. Bone mineral content (BMC) and density (BMD) were measured by dual energy X-ray absorptiometry (DXA) at the lumbar spine and at the hip and heel ultrasound investigation was performed. Blood was sampled for determination of serum total and free testosterone, total and free estradiol, sex hormone-binding globulin (SHBG), procollagen type I N propeptide, total and carboxylated osteocalcin, tartrate-resistant acid phosphatase 5b, 25-hydroxyvitamin D (25-OHD), and intact parathyroid hormone (iPTH), as well as for studying the XbaI and PvuII polymorphisms of the estrogen receptor gene and the CAG repeat polymorphism of the androgen receptor gene. Urine was collected for the determination of N-terminal cross-linking telopeptide of type I collagen. Muscle strength was measured and Cooper's test was performed. Current exercise, smoking, calcium intake, and alcohol consumption were recorded using a questionnaire. During military service, 15 men experienced a stress fracture, diagnosed with X-ray in 14 and with nuclear magnetic resonance in one man. Those who experienced a fracture were taller than those who did not (P = 0.047). The result of Cooper's test was worse in the fracture group than in the non-fracture group (P = 0.026). Femoral neck and total hip BMC and BMD, adjusted for age, weight, height, exercise, smoking, and alcohol and calcium intake were lower (P = 0.021-0.041) for the fracture group. Stress fractures associated with higher iPTH levels (P = 0.022) but not with lower 25-OHD levels. Bone turnover markers as well as sex hormone and SHBG levels were similar for men with and without stress fracture. There was no difference in the genetic analyses between the groups. In conclusion, tall height, poor physical conditioning, low hip BMC and BMD, as well as high serum PTH level are risk factors for stress fractures in male Finnish military recruits. Given the poor vitamin D status of young Finnish men, intervention studies of vitamin D supplementation to lower serum PTH levels and to possibly reduce the incidence of stress fractures are warranted.


Assuntos
Fraturas de Estresse/etiologia , Militares , Fosfatase Ácida/sangue , Adolescente , Adulto , Densidade Óssea , Colágeno Tipo I/sangue , Estradiol/sangue , Fraturas de Estresse/classificação , Humanos , Isoenzimas/sangue , Masculino , Osteocalcina/sangue , Hormônio Paratireóideo/sangue , Polimorfismo Genético , Estudos Prospectivos , Receptores Androgênicos/genética , Receptores de Estrogênio/genética , Fatores de Risco , Globulina de Ligação a Hormônio Sexual/análise , Fosfatase Ácida Resistente a Tartarato , Testosterona/sangue , Vitamina D/análogos & derivados , Vitamina D/sangue
12.
J Clin Endocrinol Metab ; 89(1): 76-80, 2004 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-14715830

RESUMO

Severe vitamin D deficiency causes rickets, but scarce data are available about the extent to which vitamin D status determines the development of the peak bone mass in young adults. Our aim was to evaluate the prevalence of vitamin D deficiency [serum 25-hydroxyvitamin D (25-OHD) less than the lower limit of the reference range of 20-105 nmol/liter] and the relationship between vitamin D status and peak bone mass among young Finnish men. A cross-sectional study of determinants of peak bone mass with data on lifestyle factors collected retrospectively was performed in 220 young men, aged 18.3-20.6 yr. One hundred and seventy men were recruits of the Finnish Army, and 50 were men of similar age who had postponed their military service for reasons not related to health. Bone mineral content, bone mineral density, and scan area were measured in lumbar spine and upper femur by dual energy x-ray absorptiometry. Serum 25-OHD concentrations were followed prospectively for 1 yr. In July 2000, only 0.9% of the men had vitamin D deficiency, but 6 months later, in the winter, the respective percentage was 38.9%. After adjusting for age, height, weight, exercise, smoking, calcium, and alcohol intake, there existed a positive correlation between serum 25-OHD and bone mineral content at lumbar spine (P = 0.057), femoral neck (P = 0.041), trochanter (P = 0.010), and total hip (P = 0.025). The correlation coefficients for the bone mineral densities at the four measurement sites were 0.035, 0.061, 0.056, and 0.068, respectively. No correlation was found to scan area. We conclude that vitamin D deficiency is very common in Finnish young men in the winter, and it may have detrimental effects on the acquisition of maximal peak bone mass. As in Finland vitamin D supplementation to infants is now stopped at the age of 3 yr, it can be asked whether at our latitude it should be continued from that age onward, not for the prevention of rickets, but as prophylaxis for osteoporosis.


Assuntos
Densidade Óssea , Estado Nutricional , Deficiência de Vitamina D/epidemiologia , Absorciometria de Fóton , Adolescente , Adulto , Peso Corporal , Calcifediol/sangue , Estudos Transversais , Exercício Físico , Fêmur , Colo do Fêmur , Finlândia , Humanos , Estilo de Vida , Vértebras Lombares , Masculino , Militares , Hormônio Paratireóideo/sangue , Estudos Prospectivos , Estudos Retrospectivos , Estações do Ano
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