Obesity Affects Short-Term Renal Function After Renal Transplantation

Area of Science:

• Nephrology
• Transplantation immunology
• Metabolic disorders

Background:

• Body mass index (BMI) is linked to patient and graft outcomes in renal transplantation.
• Obesity prevalence and its impact on kidney transplant recipients require further investigation.

Purpose of the Study:

• To determine the effect of obesity on graft function in a Taiwanese kidney transplant cohort.
• To analyze the association between body mass index (BMI) categories and kidney transplant outcomes.

Main Methods:

• 200 kidney transplant recipients were analyzed, excluding 8 pediatric cases.
• Patients were categorized into underweight, normal, overweight, and obese groups based on national criteria.
• Estimated glomerular filtration rate (eGFR) and survival rates were compared using t-tests and Kaplan-Meier analysis.

Main Results:

• Short-term eGFR was lower in overweight individuals, but this difference diminished after one month.
• No significant differences in acute rejection, acute tubular necrosis, or delayed graft function were observed between obese and non-obese groups.
• eGFR correlated with BMI groups at 1 and 3 months post-transplant, but this association was not significant at 6 months.

Conclusions:

• Obesity and being overweight can affect short-term renal function after kidney transplantation.
• Potential contributing factors include higher rates of diabetes and dyslipidemia in obese patients and increased surgical complexity.
• Long-term graft function appears less affected by BMI categories in this cohort.