Background/Objectives: Ulcerative colitis (UC) is a part of inflammatory bowel disease (IBD) and it is characterized by colonic-mucosal chronic inflammation with intermittent clinical activity. Personalized medicine is becoming more and more a relevant method of approach in this field, and the identification of potential concerns in a single patient may contribute to the improvement of the clinical approach. Mesalamine represents the cornerstone of therapy for mild–moderate disease forms, but non-adherence to medical therapy represents a critical health problem, although it is underestimated by many physicians, with evident consequences in terms of disease-related complications. The aim of the present study is to evaluate the magnitude of non-adherence to oral mesalamine in UC patients performing a systematic review and meta-analysis of literature. Methods: A literature search in PubMed and Cochrane databases was performed for studies reporting the non-adherence rate to oral mesalamine in adult UC patients, and eligible studies have been selected for evaluation. The type of study (trial vs. observational), geographic area, sample size, method of adherence assessment, and non-adherence rate were considered. Results: From a total of 464 articles, 34 studies were included in the meta-analysis after selection. Sixteen studies (47%) are observational, and eighteen (53%) are clinical trials. A total of 12/34 (35%) studies are from North America, 14/34 (41%) from Europe, 4/34 (12%) from Asia, with 4/34 (12%) from mixed areas of the world. The mean non-adherence rate was 32%, but with a consistent variability among the studies. In particular, the non-adherence rate was significantly higher in observational studies vs. clinical trials (47 vs. 20%, p < 0.001), and in North American vs. European and Asian studies (54 vs. 23 vs. 4%, respectively, p < 0.001). Conclusions: The non-adherence rate to oral mesalamine is variably reported in the literature due to the inhomogeneity of available studies, but it represents a consistent problem, often neglected, that deserves future research. A personalized approach by a physician to a single patient can improve the effectiveness of medical therapy and the management of UC patients.

Background/Objectives: Infections due to multidrug-resistant (MDR) Acinetobacter baumannii represent a critical challenge in modern healthcare, with limited therapeutic options. Eravacycline, a novel fluorocycline antibiotic, demonstrates promising in vitro activity, but real-world clinical data for complex intra-abdominal infections (IAIs) are scarce. We present two cases of severe IAI caused by carbapenem-resistant A. baumannii (CRAB) successfully treated with eravacycline. Methods: We describe the clinical course, microbiological findings, and outcomes of two critically ill patients. Case 1 was a 75-year-old male with biliary peritonitis following an endoscopic procedure. Case 2 was a 64-year-old male with infected pancreatic walled-off necrosis. Both patients had cultures positive for CRAB and failed multiple prior antibiotic regimens. Results: In both cases, the initiation of intravenous eravacycline led to significant clinical improvement, including resolution of septic shock and defervescence. A marked reduction in inflammatory markers (C-reactive protein and procalcitonin) was observed, alongside microbiological clearance of CRAB. Eravacycline was well tolerated, with no significant adverse events. Conclusions: These case reports suggest that eravacycline can be an effective and safe salvage therapy for complex IAIs caused by CRAB, even in scenarios of partial source control. It represents a valuable addition to the antimicrobial armamentarium for managing infections caused by these extensively drug-resistant organisms.