The use of semaglutide in patients with renal failure- a retrospective cohort study.

OBJECTIVE: Semaglutide, a glucagon-like peptide-1 receptor agonist is approved for weight loss and diabetes treatment, but limited literature exists regarding semaglutide use in patients with advanced chronic kidney disease (CKD). Therefore, this project assessed the safety and efficacy of semaglutide among patients with eGFR (estimated glomerular filtration rate) 15-29 mL/min/1.73m2 (CKD stage 4), eGFR<15 mL/min/1.73m2 (CKD stage 5) or on dialysis. METHODS: This is a retrospective Electronic Medical Record based analysis of consecutive patients with advanced CKD (defined as CKD 4 or greater) who were started on semaglutide (injectable or oral). Data was collected between Jan 2018 and Jan 2023. Investigators verified CKD diagnosis and manually extracted data. Data were analyzed using Fisher's exact test, paired T-test, linear mixed effects models and Wilcoxon signed rank test. RESULTS: Seventy-six patients with CKD 4 or greater who initiated semaglutide were included. Most patients had a history of T2DM (96.0%), and most were male (53.9%). The mean age was 66.8 y (SD 11.5) with the mean BMI was 36.2 (SD 7.5). The initial doses were 3 mg orally and 0.25 mg by injection. Maximum prescribed dose was 1mg (injectable) in 28 (45.2%) patients and 14 mg (orally) in 2 (14.2%) patients. Patients received semaglutide for a median duration of 17.4 (IQR 0.43, 48.8) months. Forty-eight (63.1%) patients reported no adverse effects associated with the therapy. Mean weight decreased from 106.2(SD 24.2) to 101.3 (SD 27.3) kg (p<0.001). Eight patients (16%) with type 2 diabetes (T2DM) discontinued insulin after starting semaglutide. Mean HbA1c decreased from 8.0 % (SD 1.7) to 7.1 % (SD 1.3) (p<0.001). Adverse effects were the primary reason for semaglutide discontinuation (37.0%), with nausea, vomiting, and abdominal pain being the most common complaints. CONCLUSIONS: Based on this retrospective study semaglutide appears to be tolerated by most individuals with CKD 4 or greater despite associated gastrointestinal side effects similar to those observed in patients with better kidney function and leads to an improvement of glycemic control and insulin discontinuation in patients with T2DM. Modest weight loss (approximately 4.6 % of the total body weight) was observed on the prescribed doses. Larger prospective randomized studies are needed to comprehensively assess the risks and benefits of semaglutide in patients with CKD 4 or greater and obesity.

Roux-en-Y retrograde intussusception: surgical reconstruction via sequential isoperistaltic side-to-side anastomoses.

Intussusception following Roux-en-Y gastric bypass is a rare, potentially life-threatening complication. Patients present with intermittent obstructive symptoms, and the diagnosis is made on imaging. Treatment is surgical considering the high likelihood of non-operative failure, strangulation, incarceration, perforation and concern for malignancy. We present the case of a woman in her 60s with a history of Roux-en-Y gastric bypass who presented with retrograde jejunojejunal intussusception at the distal Roux anastomosis. She proceeded to the operating room for complete anastomotic resection with reconstruction of three blind ends via two sequential isoperistaltic anastomoses. She progressed appropriately throughout her hospitalisation and was discharged on postoperative day 5 without recurrence. While intussusception in Roux-en-Y anatomy has been previously described, a literature review yielded sparse results in detailing its surgical correction. We highlight our unique surgical approach of jejunojejunal anastomotic resection with the creation of sequential isoperistaltic side-to-side anastomoses.

Outcomes of Kidney Transplantation in Patients That Underwent Bariatric Surgery: A Systematic Review and Meta-analysis.

The impact of bariatric surgery (BS) on kidney transplantation (KT) outcomes in patients with obesity remains controversial. We systematically searched MEDLINE, EMBASE, Scopus, Web of Science, and Cochrane Central Register of Controlled Trials for studies reporting outcomes of KT recipients that underwent prior BS. Common/random effects meta-analyses were performed to obtain summary ratios of the postoperative outcomes. Eighteen eligible studies involving 315 patients were identified. Sleeve gastrectomy was the most common BS type (65.7%) followed by Roux-en-Y gastric bypass (27.6%) and gastric banding (4.4%). Across studies that provided the data, the %excess weight loss from BS to KT was 62.79% (95% confidence interval [CI], 52.01-73.56; range, 46.2%-80.3%). The rates of delayed graft function and acute rejection were 16% (95% CI, 7%-28%) and 16% (95% CI, 11%-23%) in 14 and 11 studies that provided this data, respectively. The rates of wound, urinary, and vascular complications following KT were 5% (95% CI, 0%-13%),19% (95% CI, 2%-42%), and 2% (95% CI, 0%-5%), in 12, 9, and 11 studies that provided this data, respectively. Follow-up time after KT was reported in 11 studies (61.1%) and ranged from 16 mo to >5 y. Graft loss was reported in 14 studies with an average of 3% (95% CI, 1%-6%). Four studies that included a comparator group of patients with obesity who did not undergo BS before KT showed comparable outcomes between the groups. We conclude that currently there is a paucity of robust evidence to suggest that pretransplant BS has a major effect on post-KT outcomes. High-quality studies are needed to fully evaluate the impact of BS on KT outcomes.

Malignant rhabdoid tumor: Cyto-histologic correlation and immunohistochemical characterization of a rare pediatric malignancy and its differential diagnoses.

Malignant rhabdoid tumor of the kidney (MRTK) is a rare aggressive pediatric renal tumor which can be diagnosed via fine-needle aspiration (FNA) cytology and core biopsy. The diagnosis of MRTK is challenging, and requires morphologic, immunohistochemical and clinical correlation to distinguish it from other entities. The differential diagnosis includes Wilms tumor, desmoplastic small round cell tumor, rhabdomyosarcoma, synovial sarcoma, renal medullary carcinoma, and epithelioid sarcoma. Here we describe a case of MRTK diagnosed on renal cytology and core biopsy with immunohistochemistry and follow by nephrectomy with gross and morphologic findings.