João Henrique Castro

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The effects of exogenous parathyroid hormone, administered for 3 days, were compared in six hyperthyroid and six hypothyroid subjects. Maximum increments were much greater in hyperthyroid than in hypothyroid subjects for serum calcium (3.5 mg/100 ml versus 1.6 mg/100 ml), urine calcium (476 mg versus 79 mg), urine hydroxyproline (56 mg versus 11 mg), and(More)
Despite their propensity for significant infectious and mechanical complications, tunneled central venous catheters (CVCs) have become a common means of vascular access in the world for patients requiring chronic hemodialysis for end-stage renal disease. The objective of this study was to explore if cryopreserved solutions of the thrombolytic agent(More)
BACKGROUND Atherosclerotic renovascular disease (ARD) coexists with arterial obstructive disease in the coronary, cerebral, and peripheral arteries that may remain underdiagnosed and untreated. METHODS This retrospective study compares overall survival and renal survival (i.e., time to doubling of serum creatinine or end-stage renal disease (ESRD)) over(More)
Chronic kidney disease--mineral bone disorder (CKD-MBD) is a complex syndrome influenced by various factors, such as age, CKD etiology, uremic toxins, and dialysis modality. Although extensively studied in hemodialysis (HD) patients, only a few studies exist for peritoneal dialysis (PD) patients. Since most of these older studies contain no bone biopsy(More)
Accumulating evidence suggests an association between body volume overload and inflammation in chronic kidney diseases. The purpose of this study was to evaluate the effect of dietary sodium reduction in body fluid volume, blood pressure (BP), and inflammatory state in hemodialysis (HD) patients. In this prospective controlled study, adult patients on HD(More)
An epidemiological survey was carried out in 3,344 people of an urban town in Lagamar, Minas Gerais, Brazil--during 1992-1993, to evaluate the main risk factors related to taeniasis and cysticercosis. A total number of 875 (78.9%) houses were visited and 1080 (32.3%) subjects were clinically examined. Poor sanitary conditions were positively associated with(More)
BACKGROUND Left ventricular hypertrophy is a strong predictor of mortality in chronic kidney patients. A previous study of our group has shown that chronic kidney patients with low educational level has more severe ventricular hypertrophy. OBJECTIVE To extend a previous study and to assess whether left ventricular hypertrophy can explain the association(More)