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Diretrizes da AMB. 06/2011;
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ABSTRACT: This aim of this study was to evaluate the association between dietary calcium and variables that include body mass index, abdominal obesity, metabolic profile, and blood pressure levels in renal transplant patients.
A cross-sectional study was conducted.
Eligible patients were recruited from renal transplant outpatient clinics at Pedro Ernesto University Hospital, Rio de Janeiro, Brazil.
A total of 40 men and 34 women aged >18 years who had received kidney transplants in the past ≥12 months were included in this study.
All patients underwent clinical, dietary, anthropometric, and biochemical evaluation.
Participants were classified into the following 2 groups on the basis of their mean dietary calcium intake: group A (<600 mg/day) and group B (≥600 mg/day). Patients in group B presented significantly lower levels of waist circumference and waist-to-hip ratio as compared with those in group A (P = .04 and P = .005, respectively), after adjusting for confounding variables such as energy intake, gender, age, physical activity, time since transplantation, and prednisone dose. After controlling for potential confounders, including energy intake and physical activity, subjects in group B had a lower odds ratio for prevalent abdominal obesity as compared with those in group A (odds ratio, 0.17; 95% confidence interval, 0.03 to 0.94; P = .04). Body mass index was significantly lower in patients with higher calcium intake; however, this difference did not reach statistical significance after adjustments for confounding factors. Metabolic profile and blood pressure levels were similar in both groups.
The findings of the present study suggest that a higher dietary calcium intake may be associated with lower abdominal adiposity in renal transplant patients.
Journal of Renal Nutrition 01/2011; 21(5):418-25. · 1.57 Impact Factor
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ABSTRACT: Specific anti-human leukocyte antigen antibodies (HLA) in the post-transplant period may be present with acute rejection episodes (ARE), and high soluble CD30 (sCD30) serum levels may be a risk factor for ARE and graft loss.
HLA cross-matching, panel reactive antibodies (PRA), and sCD30 levels were determined prior to transplantation in 72 patients. Soluble CD30 levels and PRA were re-assessed at day 7, 14, 21, and 28, and monthly up to the sixth. Results: Twenty-four subjects had a positive PRA and 17 experienced ARE. Nine of 17 ARE subjects demonstrated positive PRA and 16 had HLA mismatches. Positive PRA was more frequent in ARE subjects (p = 0.03). Eight subjects with ARE had donor-specific antibodies (DSA) in serum samples pre-transplantation, two subjects developed DSA. Three subjects without ARE had positive PRA only in post-transplantation samples. Soluble CD30 levels were higher in pre-transplant samples and ARE subjects than non-ARE subjects (p = 0.03). Post-transplant sCD30 levels were elevated in subjects who experienced rejection and were significantly higher at seven d (p = 0.0004) and six months (p = 0.03).
Higher sCD30 levels following transplant were associated with ARE. Elevated sCD30 levels may represent a risk factor for acute rejection.
Clinical Transplantation 11/2010; 24(6):821-9. · 1.67 Impact Factor
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01/2010; , ISBN: 9788573782011
