Advanced polymeric systems for colon drug delivery: from experimental models to market applications.

In recent years, nano and micro drug delivery systems targeting the colon have gained more attention due to increasing interest in treating colon diseases such as colorectal cancer and inflammatory bowel disease, , Crohn's disease and ulcerative colitis. Usually, nanocarriers are exploited for their enhanced permeability properties, allowing higher penetration effects and bioavailability, while microcarriers are primarily used for localized and sustained release. In bowel diseases, carriers must go into a delicate environment with a strict balance of gut bacteria (, colon), and natural or biodegradable polymers capable of ensuring lower toxicity are preferred.

Chronodisruption that dampens output of the central clock abolishes rhythms in metabolome profiles and elevates acylcarnitine levels in the liver of female rats.

Aim: Exposure to light at night and meal time misaligned with the light/dark (LD) cycle-typical features of daily life in modern 24/7 society-are associated with negative effects on health. To understand the mechanism, we developed a novel protocol of complex chronodisruption (CD) in which we exposed female rats to four weekly cycles consisting of 5-day intervals of constant light and 2-day intervals of food access restricted to the light phase of the 12:12 LD cycle.

Methods: We examined the effects of CD on behavior, estrous cycle, sleep patterns, glucose homeostasis and profiles of clock- and metabolism-related gene expression (using RT qPCR) and liver metabolome and lipidome (using untargeted metabolomic and lipidomic profiling).

Clinical evaluation and outcome in heart failure patients receiving chemotherapy with different anti-cancer agents.

Background: The optimal strategy for modern chemotherapy should be based on a comprehensive approach for cancer patients with cardiovascular diseases. Therefore, cardio-oncology has received increasing attention owing to the cardiotoxic effects of anti-cancer therapies.

Objectives: We aimed to evaluate the clinical characteristics and outcomes of patients with heart failure (HF) who received chemotherapy compared with those of a matched cohort with HF who did not receive chemotherapy, using real-world HF data.

Machine Learning-Assisted High-Throughput Screening of Nanozymes for Ulcerative Colitis.

Ulcerative colitis (UC) is a chronic gastrointestinal inflammatory disorder with rising prevalence. Due to the recurrent and difficult-to-treat nature of UC symptoms, current pharmacological treatments fail to meet patients' expectations. This study presents a machine learning-assisted high-throughput screening strategy to expedite the discovery of efficient nanozymes for UC treatment.

Anti-M2-pyruvate kinase autoantibodies are correlated with digestive damage in human Chagas disease.

Background: Determining esophageal and colon involvement in patients with Chagas disease occurs through invasive and uncomfortable examinations, which in most cases are not performed. The objective of this study was to assess the involvement of anti-M2-pyruvate kinase (M2-PK) autoantibodies in the development of digestive alterations and/or in the diagnosis of the digestive form of human Chagas disease.

Methods: The total IgG and isotype (IgG1, IgG2, IgG3, IgG4) production was quantified using the antigen of Trypanosoma cruzi and the human M2-PK recombinant protein via the ELISA technique.

Drug Release Nanoparticle System Design: Data Set Compilation and Machine Learning Modeling.

Magnetic nanoparticles (NPs) are gaining significant interest in the field of biomedical functional nanomaterials because of their distinctive chemical and physical characteristics, particularly in drug delivery and magnetic hyperthermia applications. In this paper, we experimentally synthesized and characterized new FeO-based NPs, functionalizing its surface with a 5-TAMRA cadaverine modified copolymer consisting of PMAO and PEG. Despite these advancements, many combinations of NP cores and coatings remain unexplored.

Susceptibility of different mice species to chemical induction of colorectal cancer by 1,2-dimethylhydrazine.

Background: Colorectal cancer (CRC) is a major public health concern. Animal models play a crucial role in understanding the disease pathology and development of effective treatment strategies. Chemically induced CRC represents a cornerstone in animal model development; however, due to the presence of different animal species with different genetic backgrounds, it becomes mandatory to study the susceptibility of different mice species to CRC induction by different chemical entities such as 1,2-dimethylhydrazine (DMH).

Alginate coated mesoporous silica nanoparticles as oral delivery carrier of curcumin and quercetin to colon cancer: preparation, optimization, characterization, and anticancer activity.

The synergistic bioactive effect of polyphenols can enhance the development of functional foods to prevent chronic diseases such as cancer. Curcumin and quercetin have been shown to possess anticancer properties. The combination of curcumin and quercetin has been shown to provide synergistic effects against cancer cell proliferation.

Cancer vaccines compensate for the insufficient induction of protective tumor-specific immunity of CD3 bispecific antibody therapy.

Background: CD3 bispecific antibody (CD3 bsAb) therapy has become an established treatment modality for some cancer types and exploits endogenous T cells irrespective of their specificity. However, durable clinical responses are hampered by immune escape through loss of tumor target antigen expression. Induction of long-lasting tumor-specific immunity might therefore improve therapeutic efficacy, but has not been studied in detail yet for CD3 bsAbs.

Quality of Gastrointestinal Surgical Oncology Care According to Insurance Status.

Background: Despite efforts to expand insurance coverage, substantial inequalities persist, particularly in cancer treatment. We aimed to evaluate whether quality disparities exist across major insurance plans for patients undergoing curative-intent resection for gastrointestinal (GI) cancers.

Methods: This is a retrospective study of adult patients in the National Cancer Database (NCDB) diagnosed with GI malignant neoplasms between January 1, 2004 and December 31, 2020.

Analysis of Departures from Linearity in the Dose Response for Japanese Atomic Bomb Survivor Solid Cancer Mortality and Cancer Incidence Data and Assessment of Low-Dose Extrapolation Factors.

Although leukemia in the Japanese atomic bomb survivor data has long exhibited upward curvature, until recently this appeared not to be the case for solid cancer. It has been suggested that the recently observed upward curvature in the dose response for the Japanese atomic bomb survivor solid cancer mortality data may be accounted for by flattening of the dose response in the moderate dose range (0.3-0.

M2 macrophage-targeting peptide-modified liposomes enhance the uptake and antitumor efficacy of liposomal IFN-γ in mice with C26 colon carcinoma.

While liposomes enhance the safety and pharmacokinetic profile of free drugs, they have not significantly improved therapeutic efficacy. To overcome this challenge, targeted depletion of tumor-associated macrophages (TAMs) shows significant potential as an effective antitumor therapy, reducing off-target effects in comparison to non-targeted liposomes. In the context of peptide-mediated targeted cancer therapy, we evaluated the reprogramming activity of IFN-γ liposomes on TAMs, as well as that of IFN-γ liposomes modified with an M2 macrophage-targeting peptide, which binds preferentially to murine anti-inflammatory M2 macrophages/M2-like TAMs.

Doing Less Later: Seniorization of General Surgery Resident Operative Experience in the Entrustable Professional Activities at Veterans Affairs Hospitals.

Objective: Identify changes in general surgery resident autonomy and resident postgraduate year (PGY) level in Entrustable Professional Activity (EPA) cases over time.

Design: Retrospective cohort study.

Setting: United States Veterans Affairs (VA) hospital system, 2004 to 2020.

Mixed neuroendocrine-non-neuroendocrine neoplasm of the colon treated with laparoscopic resection and adjuvant chemotherapy: a case report.

Mixed neuroendocrine-non-neuroendocrine neoplasm (MiNEN) of the colon is rare with a poor prognosis. Since the first description of a mixed neoplasm 100 years ago, the nomenclature has evolved, most recently with the 2022 World Health Organization (WHO) classification system. We describe our experience of a case of locoregionally advanced MiNEN of the descending colon treated with curative laparoscopic resection and adjuvant chemotherapy.

Knockdown of LAMA3 enhances the sensitivity of colon cancer to oxaliplatin by regulating the Hippo-YAP pathway.

Background: Oxaliplatin is the first-line chemotherapy for patients with colon cancer (CC). However, its resistance limits its therapeutic efficacy.

Methods: Oxaliplatin resistance-associated differentially expressed genes (DEGs) in the GSE42387 and GSE227315 datasets were identified through bioinformatics methods.

Polysaccharides from maggot extracts suppressed colorectal cancer progression by inducing ferroptosis via HMOX1/GPX4 signaling pathway.

Maggots contain various kinds of polysaccharides and recent studies mostly concentrated on their anti-inflammatory functions. While the molecule mechanisms related to the polysaccharides inhibiting carcinogenesis remains unclear. Here we characterized the polysaccharides extracted from maggot (MEs) determining their anti-colon cancer potentials.

Polysaccharide-based drug delivery targeted approach for colon cancer treatment: A comprehensive review.

Colon cancer is a leading cause of cancer-related morbidity and mortality worldwide, necessitating advancements in therapeutic strategies to improve outcomes. Current treatment modalities, including surgery, chemotherapy, and radiation, are limited by systemic toxicity, low drug utilization rates, and off-target effects. Colon-targeted drug delivery systems (CDDS) offer a promising alternative by leveraging the colon's unique physiology, such as near-neutral pH and extended transit time, to achieve localized and controlled drug release.

Impact of Chemotherapy Treatment on the Functionality and Quality of Life of Cancer Patients.

Background And Purpose: Cancer is one of the most prevalent diseases in the general population, and is one of the main causes of changes in the population's illness profile. In this study, we assessed changes in the functional status and quality of life of patients in the first months of chemotherapy treatment.

Method: A prospective cohort study was carried out, collecting data from cancer patients seen at an outpatient clinic in the Midwest of Santa Catarina who had breast, lung, colon and rectum, prostate and head and neck cancer.

Impact of Small Tumor Size on Prognosis in T3N1 Colon Cancer.

Background: Traditionally, large tumor size is associated with poor survival in colon cancer, but its impact remains limited and controversial. Recently, the impact of small tumor size on prognosis has gained attention. This study aimed to investigate whether small tumor size can be an additional parameter for T3N1 colon cancer prognosis.

Partial versus radical cystectomy in localized colorectal cancer: a systematic review and meta-analysis.

Purpose: Locally advanced colorectal tumors frequently invade adjacent organs, particularly the urinary bladder in the sigmoid colon and upper rectum, complicating multivisceral resections. This study compared postoperative outcomes of partial cystectomy (PC) and total cystectomy (TC) in patients with locally advanced colorectal cancer.

Methods: A systematic review was conducted in PubMed, Scopus, Central Register of Clinical Trials, and Web of Science for studies published up to November 2024.

Comparative effectiveness of laparoscopic versus open colectomy in colon cancer patients: a study protocol for emulating a target trial using cancer registry data.

Introduction: The objective of this study is to compare the 5 year overall survival of patients with stage I-III colon cancer treated by laparoscopic colectomy versus open colectomy.

Methods: Using Mecklenburg-Western Pomerania Cancer Registry data from 2008 to 2018, we will emulate a phase III, multicenter, open-label, two-parallel-arm hypothetical target trial in adult patients with stage I-III colon cancer who received laparoscopic or open colectomy as an elective treatment. An inverse-probability weighted Royston‒Parmar parametric survival model (RPpsm) will be used to estimate the hazard ratio of laparoscopic versus open surgery after confounding factors are balanced between the two treatment arms.

Engineering Acid-Promoted Two-Photon Ratiometric Nanoprobes for Evaluating HClO in Lysosomes and Inflammatory Bowel Disease.

HClO is considered a potential contributing factor and biomarker of inflammatory bowel disease (IBD). Accurate monitoring of lysosomal HClO is important for further developing specific diagnostic and therapeutic schedules for IBD. However, only rare types of fluorescent probes have been reported for detecting HClO in IBD so far.

Rational Design of Dual-Targeted Nanomedicines for Enhanced Vascular Permeability in Low-Permeability Tumors.

Designing dual-targeted nanomedicines to enhance tumor delivery efficacy is a complex challenge, largely due to the barrier posed by blood vessels during systemic delivery. Effective transport across endothelial cells is, therefore, a critical topic of study. Herein, we present a synthetic biology-based approach to engineer dual-targeted ferritin nanocages (Dt-FTn) for understanding receptor-mediated transport across tumor endothelial cells.

Colon-Targeted Ginseng Polysaccharides-Based Microspheres for Improving Ulcerative Colitis via Anti-Inflammation and Gut Microbiota Modulation.

Natural plant-derived polysaccharides exhibit substantial potential for treating ulcerative colitis (UC) owing to their anti-inflammatory and antioxidant properties and favorable safety profiles. However, their practical application faces several challenges, including structural instability in gastric acid, imprecise targeting of inflamed regions, and limited intestinal retention times. To address these limitations, pH-responsive, colon-targeting microspheres (pWGPAC MSs) are developed for delivering phosphorylated wild ginseng polysaccharides (pWGP) to alleviate UC.