First Case Report of Acquired Copper Deficiency Following Revisional Single Anastomosis Duodeno-Ileal Bypass with Sleeve Gastrectomy (SADI-S) Leading to Severe Pancytopenia with Refractory Anemia

Copper Deficiency: A Frequently Overlooked Complication After MBS-A Systematic Review and Meta-analysis

This study reviews the prevalence of copper (Cu) deficiency in patients for metabolic and bariatric surgery (MBS), as well as the long-term outcomes related to the prevalence of Cu deficiency after undergoing MBS. A systematic literature search and meta-analysis were conducted in PubMed, Web of Science, and Scopus for articles published by August 31, 2024. The search terms included metabolic and bariatric surgery, weight loss surgery, metabolic surgery, obesity surgery, sleeve gastrectomy, gastric banding, gastric bypass, duodenal switch, duodenojejunal bypass, copper, copper deficiency, and hypocuposemia. After PRISMA screening, 43 studies with a total of 49 patients with obesity were included in this meta-analysis. The results demonstrated that the prevalence of Cu deficiency after MBS at 1-, 2-, 3-, and 4-year follow-up was found to be 16%, 28%, 21%, and 16%, respectively. Additionally, hypocuposemia was observed to be more prevalent in patients with BPD compared with other types of surgery. Copper deficiency is frequently observed in patients following MBS, particularly those who have undergone BPD procedures. Therefore, it is imperative for patients to undergo postoperative follow-up and nutritional monitoring, along with targeted interventions.

Single Anastomosis Duodeno-Ileostomy with Sleeve Gastrectomy/Single Anastomosis Duodenal Switch (SADI-S/SADS) IFSO Position Statement-Update 2023

The single anastomosis duodeno-ileostomy with sleeve gastrectomy/single anastomosis duodenal switch (SADI-S/SADS) has gained attention as an alternative to the traditional biliopancreatic diversion with duodenal switch (BPD-DS). In 2021, IFSO endorsed SADI-S/SADS as a safe and effective procedure, underscoring the necessity for long-term multidisciplinary care and randomized controlled trials (RCTs). A task force was established to conduct a systematic review of current evidence on SADI-S/SADS to guide clinical practice. A systematic review was conducted across three databases, focusing on studies examining SADI-S/SADS and its outcomes. A total of 93 studies were analyzed. SADI-S/SADS demonstrated efficacy in weight loss and medium-to-long-term control of type 2 diabetes mellitus (T2DM), along with positive outcomes regarding hypertension and hyperlipidemia. However, its impact on other comorbidities remains inconclusive. Frequent nutritional deficiencies were identified, particularly in fat-soluble vitamins, anemia, and hypoalbuminemia. Despite significant efforts, high-quality evidence on SADI-S/SADS remains scarce, prompting IFSO to advocate for increased registry participation, publication of long-term studies, and more RCTs. Lifelong supplementation and monitoring for nutritional deficiencies are recommended. The current position statement will be reviewed in 2 years.

Host-guest interactions of coumarin-based 1,2-pyrazole using analytical and computational methods: Paper strip-based detection, live cell imaging, logic gates and keypad lock applications

A novel Coumarin-based 1,2-pyrazole, HCPyTSC is synthesised and characterized. The chemosensor has been shown to have efficient colourimetric and fluorescence sensing capabilities for the quick and selective detection of fluoride and copper ions. At 376 and 430 nm, the HCPyTSC exhibits selective sensing for Cu2+ and F- ions. By examining the natural bond orbital (NBO) analysis and the potential energy curve (PES) of the ground state for the function of the C-H bond, it has been determined from the theoretical study at hand that the deprotonation was taken from the 'CH' proton of the pyrazole ring. For F- and Cu2+, the HCPyTSC detection limits were 4.62 nM and 15.36 nM, respectively. Similarly, the binding constants (Kb) for F- and Cu2+ ions in acetonitrile medium were found to be 2.06 × 105 M-1 and 1.88 × 105 M-1. Chemosensor HCPyTSC with and without F- and Cu2+ ions have an emission and absorption response that can imitate a variety of logic gates, including the AND, XOR, and OR gates. Additionally, a paper-based sensor strip with the HCPyTSC was created for use in practical, flexible F- sensing applications. The paper-based sensor was more effective in detecting F- than other anions. The effectiveness of HCPyTSC for the selective detection of F- in living cells as well as its cell permeability were examined using live-cell imaging in T24 cells.