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1.
J Clin Lab Anal ; 30(5): 732-5, 2016 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-26990800

RESUMO

BACKGROUND: This study was aimed to investigate whether measurement of free testosterone and cortisol in saliva is a reliable alternative to their assessment in serum for monitoring physical fitness in professional athletes. METHODS: We studied 25 members of the soccer team Parma F.C., playing in Italian major football league. Blood and saliva samples were collected at fasting, before a regular training session. Cortisol, total and free testosterone, as well as the ratio between free testosterone and cortisol, were assessed in paired serum and saliva samples, and their results were compared. RESULTS: An excellent correlation was found between serum and saliva cortisol (r = 0.751; P < 0.001). A significant correlation was also observed between free testosterone in serum and saliva (r = 0.590; P = 0.002), whereas no significant correlation was found between total testosterone in serum and saliva (r = 0.181; P = 0.387). A significant correlation was found for the free testosterone to cortisol ratio in serum and saliva (r = 0.43; P = 0.031). All athletes (25/25; 100%) declared that they would feel more comfortable to have saliva rather than blood serially collected. CONCLUSIONS: The results of this study suggest that measurement of free testosterone and cortisol in saliva may be seen as a reliable alternative to their assessment in serum.


Assuntos
Hidrocortisona/sangue , Imunoensaio/métodos , Saliva/química , Medicina Esportiva/métodos , Testosterona/sangue , Adulto , Demografia , Humanos , Itália , Masculino , Soro , Futebol , Estatísticas não Paramétricas
2.
Haematologica ; 94(1): 87-93, 2009 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-19001278

RESUMO

BACKGROUND: XIAP is the best characterized and the most potent direct endogenous caspase inhibitor and is considered a key actor in the control of apoptotic threshold in cancer cells. In this report, we specifically addressed XIAP regulation and function in myeloma cells. DESIGN AND METHODS: XIAP and its endogenous inhibitor XAF-1 protein levels and their regulation were assessed by immunoblot analysis in myeloma cell lines or primary myeloma cells. XIAP knockdown by RNA interference was used to evaluate XIAP impact on in vitro drug sensitivity and in vivo tumor growth. RESULTS: Our results indicate that myeloma cells expressed high levels of XIAP protein that were tightly regulated during growth factor stimulation or stress condition. Of note, an increased XIAPlevel was evidenced during the blockade of the canonical cap-dependent translation by the mTOR inhibitor rapamycin, supporting the hypothesis of a functional IRES sequence in XIAP mRNA. In addition, caspase-mediated XIAP cleavage correlated to an apoptotic process occurring upon cell treatment with the proteasome inhibitor bortezomib. Importantly, XIAP knockdown using RNA interference enhanced drug sensitivity and decreased tumor formation in NOD/SCID mice. Finally, myeloma cells also expressed the XIAP inhibitor XAF-1 that interacted with XIAP in viable myeloma cells. CONCLUSIONS: Altogether, our data argue for a delicate control of XIAP function in myeloma cells and stimulate interest in targeting XIAP in myeloma treatment.


Assuntos
Mieloma Múltiplo/metabolismo , Mieloma Múltiplo/patologia , Proteínas Inibidoras de Apoptose Ligadas ao Cromossomo X/metabolismo , Animais , Linhagem Celular Tumoral , Sobrevivência Celular , Transformação Celular Neoplásica/genética , Transformação Celular Neoplásica/metabolismo , Transformação Celular Neoplásica/patologia , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Técnicas de Silenciamento de Genes , Humanos , Camundongos , Camundongos Nus , Camundongos SCID , Mieloma Múltiplo/genética , Interferência de RNA , Proteínas Inibidoras de Apoptose Ligadas ao Cromossomo X/genética , Ensaios Antitumorais Modelo de Xenoenxerto
3.
Acta Biomed ; 79(3): 251-4, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19260388

RESUMO

We report a rare case of idiopathic hypogonadotropic hypogonadism in an adult male (31-year-old), who underwent an endocrinological examination because of erectile dysfunction and suspected infertility. Laboratory data showed isolated gonadotropin deficiency. Magnetic resonance imaging (MRI) of the hypothalamic-pituitary unit showed no tumoral expansions. The patient was tested with gonadotropin releasing hormone (Gn-RH) (100 microg as an i.v. bolus injection). No significant LH and FSH responses were observed. Idiopathic hypogonadotropic hypogonadism is usually caused by hypothalamic lesions, however, since Gn-RH was unable to stimulate LH and FSH secretions, we supposed that our patient was affected by defective gonadotropin secretion at pituitary level.


Assuntos
Disfunção Erétil/etiologia , Gonadotropinas Hipofisárias/deficiência , Hipogonadismo , Adulto , Androgênios/uso terapêutico , Hormônio Foliculoestimulante/sangue , Hormônio Liberador de Gonadotropina , Humanos , Hipogonadismo/sangue , Hipogonadismo/complicações , Hipogonadismo/diagnóstico , Hipogonadismo/tratamento farmacológico , Hormônio Luteinizante/sangue , Masculino , Testosterona/uso terapêutico
4.
J Hypertens ; 25(2): 367-73, 2007 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-17211243

RESUMO

BACKGROUND: Rates of cardiovascular morbidity and mortality are greater in heavy alcoholics than in either teetotallers or light-to-moderate drinkers. OBJECTIVE: On the assumption that factors leading to atherosclerotic damage remain operative even after long-term alcohol withdrawal, we studied the possible mechanisms of raised cardiovascular risk in former heavy alcoholics. METHODS: Forty-two apparently disease-free, normotensive alcoholics detoxified for 37.1 +/- 31.9 (SD) months, median 24, participated in the study. They were compared with 39 lifetime alcohol-abstaining control subjects, carefully matched for age, sex, body mass index, smoking and dietary habits, physical activity, lipids and fasting glucose. Endothelial function (flow-mediated dilation of brachial artery, high-resolution ultrasound technique), blood pressure, and some parameters of endothelial activation, oxidative stress, vascular inflammation and insulin sensitivity were measured. RESULTS: The maximal percentage of flow-mediated dilatation was reduced in detoxified alcoholics (10.1 +/- 4.6 versus 14.9 +/- 7.4, P < 0.001) who also showed significantly higher blood pressure (systolic 127.5 +/- 12.9 versus 118.2 +/- 10.7 mmHg, P < 0.001; diastolic 79.4 +/- 7.1 versus 74.6 +/- 6.4 mmHg, P < 0.01; mean 95.4 +/- 8.2 versus 89.1 +/- 7.3 mmHg, P < 0.001), uric acid (5.0 +/- 1.1 versus 4.4 +/- 0.8 mg/dl, P < 0.05), high-sensitivity C-reactive protein (2.1 +/- 2.0 versus 1.0 +/- 0.9 mg/l, P < 0.01), endothelin-1 (0.38 +/- 0.11 versus 0.17 +/- 0.10 pg/ml, P < 0.001) and fasting insulin (10.4 +/- 4.5 versus 5.6 +/- 1.6 muU/ml, P < 0.001) with abnormal homeostasis model assessment index of insulin resistance (2.3 +/- 1.1 versus 1.2 +/- 0.4, P < 0.001). CONCLUSION: Previous heavy alcoholism, in spite of long-term withdrawal, is associated with endothelial dysfunction and a wide cluster of haemodynamic, vascular and metabolic abnormalities that indicate an unfavourable cardiovascular and metabolic risk profile even in apparently disease-free former alcoholics.


Assuntos
Alcoolismo/complicações , Doenças Cardiovasculares/fisiopatologia , Endotélio Vascular/fisiopatologia , Vasodilatação/fisiologia , Adulto , Alcoolismo/reabilitação , Biomarcadores/sangue , Pressão Sanguínea/fisiologia , Artéria Braquial/diagnóstico por imagem , Artéria Braquial/fisiologia , Doenças Cardiovasculares/etiologia , Doenças Cardiovasculares/prevenção & controle , Feminino , Humanos , Inflamação , Resistência à Insulina , Masculino , Pessoa de Meia-Idade , Estresse Oxidativo , Medição de Risco , Temperança , Tempo , Ultrassonografia
5.
Eur J Endocrinol ; 156(4): 409-14, 2007 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-17389454

RESUMO

OBJECTIVE: Thyroid autoimmunity is a common side effect of interferon-alpha (IFN-alpha) treatment for chronic hepatitis C. There are currently no reliable parameters to predict the occurrence of thyroid dysfunctions in patients undergoing IFN-alpha therapy. CXC chemokine ligand 10 (CXCL10) is a chemokine known to play a role in both thyroid autoimmune disease and hepatitis C virus (HCV) hepatitis. DESIGN: The aim of this study was to evaluate serum CXCL10 levels in HCV patients treated with IFN-alpha in relation to the occurrence of thyroid dysfunctions. Serum CXCL10 levels were assayed in 25 HCV patients (proven to be negative for serum thyroid antibodies) before and during IFN-alpha therapy (2, 4 and 6 months) and in 50 healthy controls. HCV patients were retrospectively selected according to the occurrence of IFN-alpha-induced thyroid dysfunction and were assigned to two groups. Group I included 15 patients who did not develop thyroid antibody positivity or dysfunction; group II included ten patients who showed the appearance of serum thyroid antibodies, followed by clinically overt thyroid dysfunction. RESULTS: Patients with HCV, regardless of the development of thyroid dysfunctions, had significantly higher serum CXCL10 than controls (261.6+/-123.4 vs 80.4+/-33.6 pg/ml; P<0.00001). Pretreatment mean serum CXCL10 levels were significantly higher in Group I versus Group II (308.6+/-130.7 vs 191.1+/-69.4 pg/ml; P<0.05). Groups I and II showed different rates of favourable response to IFN-alpha treatment (33 and 90% respectively). CONCLUSION: Our results suggest that measuring serum CXCL10 before IFN-alpha treatment may be helpful for identifying those patients with higher risk to develop thyroid dysfunction, and require a careful thyroid surveillance throughout the treatment.


Assuntos
Antivirais/efeitos adversos , Doenças Autoimunes/induzido quimicamente , Quimiocinas CXC/sangue , Hepatite C/tratamento farmacológico , Interferon-alfa/efeitos adversos , Doenças da Glândula Tireoide/induzido quimicamente , Adulto , Antivirais/uso terapêutico , Quimiocina CXCL10 , Feminino , Humanos , Interferon-alfa/uso terapêutico , Masculino , Pessoa de Meia-Idade
6.
Tumori ; 93(1): 97-9, 2007.
Artigo em Inglês | MEDLINE | ID: mdl-17455879

RESUMO

Most of the information about the genetic composition of parathyroid tumors has been obtained by comparative genomic hybridization (CGH) and loss of heterozygosity (LOH) studies, whereas only few conventional cytogenetic investigation results are available. We have performed cytogenetic analysis of short-term cultures from 3 parathyroid adenoma tissue samples. Two cases showed a normal karyotype in all the metaphases obtained from independent primary cultures. In one case 5 metaphases (in a total of 25) from 2 independent cultures showed a nonrandom translocation t(4;13)(q21;q14), which was therefore accepted as clonal. To our knowledge this is the second clonal translocation described in this tumor type. Further conventional cytogenetic analysis of more parathyroid tumor specimens would be necessary to identify other specific abnormalities and the involved genes with a potential important role in the diagnosis, prognosis and pathogenesis of parathyroid tumors.


Assuntos
Adenoma/genética , Aberrações Cromossômicas , Cromossomos Humanos Par 13/genética , Cromossomos Humanos Par 4/genética , Neoplasias das Paratireoides/genética , Translocação Genética , Análise Citogenética , Humanos , Cariotipagem
7.
Obstet Gynecol Surv ; 61(9): 593-601, 2006 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-16919177

RESUMO

UNLABELLED: Because women with paroxysmal nocturnal hemoglobinuria (PNH) are especially vulnerable to thromboembolic phenomena, pregnancy is a time of increased risk for both mother and fetus. However, pregnancies in affected women are rare; only case reports and small studies have been reported so far. We present the case of a 20-year-old woman with PNH who, while undergoing medical tests in preparation for a bone marrow transplant, was discovered to be pregnant. We also review the obstetric literature on pregnancy complicated by PNH, which indicates that both maternal and fetal mortality is exceptionally high (11.6% and 7.2%) with the major cause of maternal mortality being thromboembolism. Major maternal complications are more frequent postpartum (30.2%) than antepartum or intrapartum (16.3%). TARGET AUDIENCE: Obstetricians & Gynecologists, Family Physicians. LEARNING OBJECTIVES: After completion of this article, the reader should be able to recall that paroxysmal nocturnal hemoglobinuria (PNH) during pregnancy increases adverse events for both the mother and the fetus, state that maternal and fetal mortality are both high, and explain that the major complications occur in the postpartum period.


Assuntos
Hemoglobinúria Paroxística/complicações , Complicações Cardiovasculares na Gravidez/etiologia , Complicações Hematológicas na Gravidez , Tromboembolia/etiologia , Adulto , Gerenciamento Clínico , Feminino , Hemoglobinúria Paroxística/mortalidade , Hemoglobinúria Paroxística/terapia , Humanos , Período Pós-Parto , Gravidez , Complicações Cardiovasculares na Gravidez/mortalidade , Complicações Cardiovasculares na Gravidez/terapia , Complicações Hematológicas na Gravidez/mortalidade , Complicações Hematológicas na Gravidez/terapia , Fatores de Risco , Tromboembolia/mortalidade
8.
Eur J Intern Med ; 17(4): 267-71, 2006 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-16762776

RESUMO

BACKGROUND: In recent years, many authors have described several cases revealing an association between hyperthyroidism and pulmonary hypertension. This observational study was designed to evaluate the prevalence of pulmonary hypertension in hyperthyroidism and to determine the role of methimazole in regulating pulmonary vascular resistance in these patients. METHODS: We studied 114 patients, 78 women and 36 men, whose mean age was 51+/-13years. Forty-seven had Graves' disease and 67 had a nodular goiter. All subjects were ambulatory and were recruited in a consecutive order. The control group (group 2) included 20 healthy subjects matched for age and sex. Transthoracic Doppler echocardiography was performed and systolic pulmonary artery pressure (PAPs) was determined by the tricuspid regurgitation method using the Bernoulli's equation. We performed a 120-day follow-up in the patients with pulmonary hypertension and we divided them into two subgroups: group 1A (n=33), patients treated with methimazole, and group 1B (n=17), subjects treated with partial thyroidectomy. RESULTS: We found a mild pulmonary hypertension in 50 patients in group 1 (43%) and in none of those in the control group. The mean+/-SD PAPs was 27.77+/-6.56 in group 1 and 21.32+/-2.55 in group 2. A negative correlation was found between the T.S.H. value and the level of PAPs (r=-0.85; p<0.001). During the follow-up, group 1A went from a PAPs value of 34.3+/-3.2 to 29.2+/-3.3 after 15days of therapy and group 1B from 34.3+/-3.0 to 34.1+/-2.9 (p<0.001). CONCLUSIONS: The results of the present study demonstrate a frequent association between hyperthyroidism and mild and transient pulmonary hypertension. Subjects treated with methimazole have a more rapid drop in PAPs.

9.
Acta Biomed ; 87 Suppl 1: 25-33, 2016 04 15.
Artigo em Inglês | MEDLINE | ID: mdl-27104317

RESUMO

The Orthopaedic Rehabilitation Centre of Madagascar can be found in the city of Antsirabe. The health care facility is equipped with 2 thermal sources of bicarbonate water used for post-operative rehabilitation and for the ailment of chronic degenerative illnesses. The aim of this study, which derives from the cooperation between the School of Specialization in Thermal Therapy of the University of Parma and Antsirabe Orthopaedic Hospital, is to analyze the real properties of thermal waters utilized in this centre and to do an overview of its possible applications in this particular African context.


Assuntos
Balneologia , Água/análise , Humanos , Madagáscar , Massagem , Peloterapia
10.
Metabolism ; 54(12): 1566-70, 2005 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-16311087

RESUMO

Although the prevalence of insulin resistance (IR) and compensatory hyperinsulinemia (CH) is increased in patients with nonalcoholic fatty liver disease, the role of IR/CH in regulation of hepatic fat content in healthy volunteers with normal concentrations of alanine transaminase (ALT) has not been defined. To address this issue, hepatic fat content was quantified by ultrasound in 69 (30 men, 39 women) healthy individuals, without known risk factors for liver disease and with plasma ALT concentrations of less than 30 U/L. Experimental variables quantified included body mass index, waist circumference, systolic and diastolic blood pressures, and fasting plasma glucose, fasting plasma insulin (FPI), and lipid concentrations. Subjects were classified as having no (55%), mild (27%), or moderate to severe (18%) hepatic steatosis on the basis of the ultrasound results. Statistically significant (P < .05-.001) correlations (Spearman rho values) existed between liver fat content and ALT (0.26), body mass index (0.52), waist circumference (0.50), systolic blood pressure (0.28), diastolic blood pressure (0.27), fasting plasma glucose (0.47), FPI (0.56), triglycerides (0.30), and high-density lipoprotein cholesterol (-0.35). Multivariate general discriminant analysis and multiple linear regression analysis indicated that FPI was the only independent predictor (P < .001) of both liver fat content and ALT concentrations. Fasting plasma insulin (a surrogate estimate of IR/CH) predicts hepatic fat content and ALT in healthy volunteers with normal transaminase concentrations, independently of the other anthropometric and metabolic variables measured.


Assuntos
Alanina Transaminase/sangue , Fígado Gorduroso/etiologia , Hiperinsulinismo/complicações , Resistência à Insulina , Idoso , Feminino , Humanos , Insulina/sangue , Fígado/metabolismo , Masculino , Pessoa de Meia-Idade
11.
J Investig Med ; 53(1): 26-30, 2005 Jan.
Artigo em Inglês | MEDLINE | ID: mdl-16025878

RESUMO

An association between Graves' disease (GD) and chronic hepatitis C (C-HC) has been observed both in the presence and the absence of recombinant interferon-alpha (rIFN-alpha) treatment. rIFN-alpha-induced GD is characterized by suppressed thyroid-stimulating hormone levels; normal or elevated free triiodothyronine (FT3) and free thyroxine (FT4) values; the presence of thyroid peroxidase antibodies, antithyroglobulin antibodies, and thyroid receptor antibodies; and high iodine thyroid uptake. In contrast, GD developed during C-HC without rIFN-alpha is less clearly defined. In this study, we examined two groups of patients: group A, 28 patients with C-HC treated with rIFN-alpha who developed GD after 1 to 9 months, and group B, 10 patients with C-HC who developed GD without a previous rIFN-alpha treatment. At the time of GD, both groups started methimazole therapy; thyroid function was reevaluated after 3, 6, 9, and 12 months. Group A patients continued IFN. After 12 months, all patients of group A were euthyroid, and 21 of them (75%) had already stopped methimazole treatment, whereas all patients of group B were euthyroid and only 2 (20%) had stopped methimazole. In conclusion, the data show a better course of GD, with a more precocious and significantly higher number of recoveries in patients with rIFN-alpha-induced GD than in rIFN-alpha-unrelated disease. Further studies are needed to establish whether the two types of GD differ not only from a clinical point of view but also because of different underlying pathogenetic mechanisms.


Assuntos
Antivirais/uso terapêutico , Doença de Graves/etiologia , Hepatite C Crônica , Interferon Tipo I/uso terapêutico , Autoanticorpos/sangue , Feminino , Doença de Graves/tratamento farmacológico , Doença de Graves/patologia , Hepacivirus/classificação , Hepacivirus/genética , Hepatite C Crônica/complicações , Hepatite C Crônica/tratamento farmacológico , Hepatite C Crônica/patologia , Humanos , Iodeto Peroxidase/sangue , Masculino , Metimazol/uso terapêutico , Pessoa de Meia-Idade , Receptores dos Hormônios Tireóideos/imunologia , Proteínas Recombinantes , Tireotropina/sangue , Tiroxina/análise , Resultado do Tratamento , Tri-Iodotironina/análise
12.
Ann Ital Med Int ; 20(3): 197-202, 2005.
Artigo em Inglês | MEDLINE | ID: mdl-16250187

RESUMO

Immune thrombocytopenic purpura (ITP) occurs in 2-3% of chronic lymphocytic leukemia (CLL) patients, whereas autoimmune thrombocytopenia is very rare before the diagnosis of lymphoma. A 67-year-old patient, was admitted to our Department because of purpura on his inferior limbs. Family history revealed arterial hypertension, a previous presence of hepatitis C virus (HCV) antibodies, with no sign of liver damage. Physical examination showed purpura of inferior limbs. Laboratory analysis revealed: marked thrombocytopenia (platelet count 5000/microL); hypogammaglobulinemia (9%, immunoglobulin-IgG 634 mg/dL); presence of HCV antibody (negative HCV-RNA); low-titer anti-nuclear antibody and anti-smooth muscle antibody (1:80); positive cryoglobulin (polycolonal, IgG-IgM, cryocrit 0.5%). Abdomen ultrasound revealed a mild liver steatosis and bone marrow aspirate megakaryocytic hyperplasia. Platelet kinetics study showed a markedly reduced platelet half-life (<1 day) with evident splenic uptake. The patient was treated with steroids, intravenous Ig and immunosuppressive agent (cyclophosphamide) with only temporary effect; a splenectomy was therefore performed with a subsequent durable increase in the platelet count. Two years later, the patient underwent a prostatectomy for prostate cancer and within the pelvic nodal screening the histological examination unexpectedly revealed features of B-cell non-Hodgkin's lymphoma, type CCL/small lymphocytic lymphoma; a bone marrow aspirate showed a monotypic CD5+, CD19+, CD23+ B-cell proliferation confirming the diagnosis of CLL. Six months later, a computed tomography scan revealed multiple pathological node enlargements (1.5-3 cm), compatible with a malignant lymphoma. The marked thrombocytopenia may have been an early expression of the lymphoproliferative disease. Otherwise, the association between CLL and ITP might reflect the underlying role of HCV infection causing an immune dysregulation responsible for both pathologies.


Assuntos
Anticorpos Anti-Hepatite C/sangue , Hepatite C/complicações , Leucemia Linfocítica Crônica de Células B/complicações , Púrpura Trombocitopênica Idiopática/complicações , Idoso , Portador Sadio , Hepatite C/diagnóstico , Humanos , Leucemia Linfocítica Crônica de Células B/diagnóstico , Masculino , Púrpura Trombocitopênica Idiopática/diagnóstico
13.
J Clin Endocrinol Metab ; 88(11): 5109-15, 2003 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-14602735

RESUMO

The oldest olds, including centenarians, are increasing worldwide and, in the near future, will represent a consistent part of the population. We have studied bone status and metabolism in 104 subjects over 98 yr of age to evaluate possible interventions able to avoid fragility fractures and disability. Ninety females and 14 males not affected by any acute disease were considered. After a complete clinical assessment, blood was drawn for evaluating bone turnover markers, and performance tests together with skeletal ultrasonography (either at the phalanges or at the heel) were performed. We found that 38 subjects had sustained a total of 55 fractures throughout their lives, and 75% of these were fragility fractures. Twenty-eight fractures occurred at the proximal femur, with 14 after the age of 94 yr. Serum 25-hydroxyvitamin D was undetectable in 99 of 104 centenarians. PTH and serum C-terminal fragment of collagen type I were elevated in 64 and 90% of centenarians, respectively, with a trend toward hypocalcemia. Bone alkaline phosphatase levels were close to the upper limit. Serum IL-6 was elevated in 81% of centenarians and was positively correlated with PTH and negatively correlated with serum calcium. Serum creatinine was not correlated with PTH. Bone ultrasonography showed that most centenarians had low values, and ultrasonographic parameters were correlated with resorption markers. We conclude that the extreme decades of life are characterized by a pathophysiological sequence of events linking vitamin D deficiency, low serum calcium, and secondary hyperparathyroidism with an increase in bone resorption and severe osteopenia. These data offer a rationale for the possible prevention of elevated bone turnover, bone loss, and consequently the reduction of osteoporotic fractures and fracture-induced disability in the oldest olds through the supplementation with calcium and vitamin D.


Assuntos
Fraturas Ósseas/epidemiologia , Fraturas Ósseas/prevenção & controle , Deficiência de Vitamina D/diagnóstico , Deficiência de Vitamina D/epidemiologia , Atividades Cotidianas , Idoso , Idoso de 80 Anos ou mais , Osso e Ossos/metabolismo , Feminino , Fraturas Ósseas/metabolismo , Humanos , Masculino , Osteomalacia/epidemiologia , Osteomalacia/metabolismo , Osteoporose/epidemiologia , Osteoporose/metabolismo , Prevalência , Fatores de Risco , Vitamina D/sangue , Deficiência de Vitamina D/metabolismo , Caminhada
14.
Curr Drug Targets Inflamm Allergy ; 3(4): 455-8, 2004 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-15584894

RESUMO

Insulin deficiency induces an increase in blood glucose levels that, in long run, becomes toxic for many organs and systems. Microangiopathy and derangements in the immune function are known consequences of hyperglycemia, but the way in which these systemic alterations may affect pulmonary function has been scarcely investigated. Although confirmation from large clinical trials is still to come, the diabetic disease seems to hit the pulmonary microcirculation as any other organ by increasing vessel wall thickness and impairing gas exchange, which leads to a measurable loss of function and respiratory efficiency. In addition, a diabetic lung is more susceptible to low respiratory tract infections by atypical microorganisms and more likely to host severe episodes of pneumonia than a normal, non-diabetic lung. This is a review of current knowledge on the impact of diabetes mellitus in lung health. We have paid special attention to the role of metabolic control in preventing damage to the lung by sustained hyperglycemia.


Assuntos
Complicações do Diabetes/etiologia , Hiperglicemia/complicações , Pneumopatias/etiologia , Complicações do Diabetes/imunologia , Complicações do Diabetes/fisiopatologia , Angiopatias Diabéticas/complicações , Angiopatias Diabéticas/imunologia , Angiopatias Diabéticas/fisiopatologia , Humanos , Hiperglicemia/terapia , Pneumopatias/imunologia , Pneumopatias/fisiopatologia , Infecções Respiratórias/etiologia , Infecções Respiratórias/imunologia , Infecções Respiratórias/fisiopatologia
15.
Metabolism ; 51(8): 1022-6, 2002 Aug.
Artigo em Inglês | MEDLINE | ID: mdl-12145776

RESUMO

The stability over a 12-year period of several coronary heart disease (CHD) risk factors was evaluated in 348 individuals who had remained healthy following baseline measurements made of the same variables in 1981. CHD risk factors evaluated were fasting and post-glucose challenge (120-minute) plasma glucose and insulin concentrations, plasma triglyceride (TG), low-density lipoprotein (LDL) and high-density lipoprotein (HDL) concentrations, and the ratio of LDL/HDL cholesterol concentrations. Approximately 40% to 60% of individuals in the highest CHD risk quartile (or lowest in the case of HDL cholesterol concentrations) in 1981 were still at highest risk in 1993. A similar proportion of individuals at lowest risk in 1981 were still in that category in 1993. At least 50% of the participants in this prospective analysis experienced a change by 1 quartile or more in each of the metabolic CHD risk factors measured, and these differences were highly statistically significant for all variables measured with the exception of the TG and HDL cholesterol concentrations. These results demonstrate that the implicit assumption in epidemiological studies that CHD risk factors at baseline remain stable may require examination.


Assuntos
Doença das Coronárias/etiologia , Glicemia/análise , Índice de Massa Corporal , HDL-Colesterol/sangue , LDL-Colesterol/sangue , Humanos , Fatores de Risco , Fatores de Tempo , Triglicerídeos/sangue
16.
Behav Brain Res ; 134(1-2): 403-10, 2002 Aug 21.
Artigo em Inglês | MEDLINE | ID: mdl-12191827

RESUMO

Twelve (+/-) 3,4-methylenedioxymethamphetamine (MDMA) users, who did not show other drug dependencies or prolonged alcohol abuse (group A), and 12 control subjects (group B) were included in the study. Prolactin (PRL) and growth hormone (GH) responses to the dopaminergic agonist bromocriptine (BROM) and psychometric measures were evaluated 3 weeks after MDMA discontinuation. PRL decreased both in A and B subjects after BROM suppression, without any significant difference between the two groups. PRL responses to BROM in MDMA users were in the normal range. In contrast, GH responses to BROM stimulation were found significantly reduced in ecstasy users, in comparison with control subjects (P < 0.001; F = 6.26). MDMA users showed higher scores on the Novelty Seeking (NS) scale at the Three dimensional Personality Questionnaire (TPQ), on direct aggressiveness subscale at Buss Durkee Hostility Inventory (BDHI), on subscale D (depression) at Minnesota Multiphasic Personality Inventory (MMPI 2) and on Hamilton Depression Rating Scale (HDRS) than control subjects. PRL areas under the curves (AUCs) showed a significant inverse correlation with NS scores both in A and B subjects. GH AUCs directly correlated with NS scores in healthy subjects, but not in MDMA users. No other psychometric measure correlated with hormonal responses. GH AUCs were inversely correlated with the measures of MDMA exposure (r = -0.48; P < 0.01). Lower GH response to BROM in A subjects (MDMA users) could reflect reduced D2 receptor sensitivity in the hypothalamus, possibly due to increased intrasynaptic dopamine concentration. Although the hypothesis of dopaminergic changes associated with a premorbid condition cannot be completely excluded, the inverse correlation between DA receptors sensitivity and the extent of ecstasy exposure may suggest a direct pharmacological action of MDMA on brain dopamine function in humans.


Assuntos
Dopamina/fisiologia , Alucinógenos/farmacologia , N-Metil-3,4-Metilenodioxianfetamina/farmacologia , Receptores de Dopamina D2/efeitos dos fármacos , Transtornos Relacionados ao Uso de Substâncias/psicologia , Adolescente , Adulto , Agressão/efeitos dos fármacos , Bromocriptina/farmacologia , Transtorno Depressivo/induzido quimicamente , Transtorno Depressivo/psicologia , Agonistas de Dopamina/farmacologia , Antagonistas dos Receptores de Dopamina D2 , Hormônio do Crescimento Humano/sangue , Humanos , Masculino , Personalidade/efeitos dos fármacos , Testes de Personalidade , Prolactina/sangue , Receptores de Dopamina D2/agonistas , Temperamento/efeitos dos fármacos
17.
Anticancer Res ; 22(5): 2903-6, 2002.
Artigo em Inglês | MEDLINE | ID: mdl-12530015

RESUMO

The end result of our research would be the development of a new diagnostic technique that could be used as a screening test, starting from a simple blood collection, a common procedure without any risk to the subject. Red blood cells (RBC) of patients affected by breast cancer are more sensitive to the denaturing action of acetylphenylhydrazine (APH), hence the formation time of hemin, one of the last oxidation products, is significantly shorter then in normal subjects. Our previous experiment showed the differences during iron oxidation between breast cancer patients and healthy persons (Croci et al. 2001). Different amounts of hemin, after the same incubation time, can discriminate between samples collected from people suffering from cancer and a healthy population. These results have given birth to the necessity to standardise a procedure useful as a screening method. The aim of the present work was to define a range of values that characterise the samples collected from healthy people.


Assuntos
Neoplasias da Mama/sangue , Eritrócitos/metabolismo , Hemoglobinas/metabolismo , Eritrócitos/efeitos dos fármacos , Feminino , Humanos , Oxidantes/farmacologia , Oxirredução , Oxiemoglobinas/metabolismo , Fenil-Hidrazinas/farmacologia , Valores de Referência , Espectroscopia de Mossbauer
18.
Recenti Prog Med ; 95(9): 443-6, 2004 Sep.
Artigo em Italiano | MEDLINE | ID: mdl-15473383

RESUMO

Prior observational studies and several case reports have suggested an association between thyroid dysfunction and pulmonary hypertension. This review was designed to evaluate the prevalence and the pattern of pulmonary vasculature involvement in hyper- and hypothyroidism. We identified original research papers and reviews by going through leading journals that publish basic and clinical research in the fields of pulmonary hypertension, hyperthyroidism and hypothyroidism, by electronically searching the Medline database. We directed special attention to papers published from 1972 to 2003. Our findings indicate the presence of a frequent association between hyperthyroidism and pulmonary hypertension (35% in the largest series of cases) which decrease after achievement of a euthyroid state. A possible explanation includes an influence of thyroid hormones which affect growth and maturation of vascular cells and enhanced catecholamine sensitivity causing pulmonary vasoconstriction. Furthermore, several studies suggest a high prevalence of transient pulmonary hypertension in hypothyroidism (49% in the largest series of cases), in these cases autoimmunity play a key role.


Assuntos
Hipertensão Pulmonar/etiologia , Doenças da Glândula Tireoide/complicações , Animais , Autoimunidade , Intervalos de Confiança , Estudos Transversais , Doença de Graves/complicações , Cobaias , Humanos , Hipertensão Pulmonar/epidemiologia , Hipertensão Pulmonar/fisiopatologia , Hipertireoidismo/complicações , Hipertireoidismo/imunologia , Hipertireoidismo/fisiopatologia , Hipotireoidismo/complicações , Hipotireoidismo/imunologia , Hipotireoidismo/fisiopatologia , Artéria Pulmonar/fisiopatologia , Pesquisa , Doenças da Glândula Tireoide/imunologia , Doenças da Glândula Tireoide/fisiopatologia , Hormônios Tireóideos/fisiologia , Tireoidite Autoimune/complicações , Vasoconstrição
19.
Eur J Intern Med ; 19(8): 587-91, 2008 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-19046723

RESUMO

BACKGROUND: Serum albumin is commonly measured in hospitalized patients. It has habitually been included among the parameters used for nutritional assessment, and recently its use has become even more widespread. Yet, no data are available in the literature about the prevalence and clinical significance of hypoalbuminemia in patients hospitalized in an internal medicine ward. The aim of this study was to investigate the prevalence and clinical significance of hypoalbuminemia in in-hospital internal medicine patients. METHODS: We retrospectively evaluated the albumin level of patients admitted to the Department of Internal Medicine and Biomedical Sciences of the University of Parma during the year 2000. We then evaluated sex, age, nutritional status, some laboratory parameters, associated diseases, and length of hospitalization in hypoalbuminemic patients in comparison with a group of patients without hypoalbuminemia. RESULTS: Hypoalbuminemics (46.5% of patients) were older, more frequently anemic, and had a higher erythrocyte sedimentation rate (ESR) and longer hospitalization; they were mostly normal weight or overweight. These patients also had chronic liver (18.6% vs. 4.5%), onco-hematological (33.8% vs. 12%), and infectious diseases (13.4% vs. 2.3%) and nephropathies (6.3% vs. 2%) more often than patients without hypoalbuminemia. The presence of onco-hematological diseases was related to anemia (O.R.=5.73; 95% CI: 3.184-10.310), lymphopenia (O.R.=2.76; 95% CI: 1.584-4.801), and hypoalbuminemia (O.R.=2.5; 95% CI: 1.178-5.307). CONCLUSIONS: Hypoalbuminemia is very frequent in an internal medicine ward. In this setting, serum albumin is related to the length of hospitalization and to other parameters with a well-known prognostic value (age, hemoglobin) and clinical usefulness (ESR). It may also play a role in the evaluation of the possible association of onco-hematological diseases.


Assuntos
Hospitais Universitários/estatística & dados numéricos , Hipoalbuminemia/epidemiologia , Medicina Interna , Fatores Etários , Idoso , Feminino , Hospitalização/estatística & dados numéricos , Humanos , Hipoalbuminemia/diagnóstico , Itália/epidemiologia , Tempo de Internação , Masculino , Prontuários Médicos , Avaliação Nutricional , Prevalência , Prognóstico , Estudos Retrospectivos , Fatores de Risco , Índice de Gravidade de Doença
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