Piperidine and bis-piperidine alkaloids from the peels of Areca catechu and their monoamine oxidases inhibitory activity.

Eleven undescribed piperidine alkaloids, arecachines A‒J (1-11), were isolated from the peels of Areca catechu. Compounds 8-11 are featured as bis-piperidine alkaloids. Their structures were elucidated by analysis of UV, IR, HRESIMS, 1D and 2D NMR spectra.

Corneal subepithelial nerve fibers in type 2 diabetes: potential biomarker of diabetic neuropathy.

Aim: To observe the changes in corneal subepithelial nerve fibers (CNFs) and Langerhans cells (LCs) in patients with type 2 diabetes using corneal laser confocal microscopy (CLCM).

Methods: A total of 60 patients (64 eyes), including 40 patients with type 2 diabetes (DM group) and 20 subjects without diabetes (control group) were included with CLCM. Neuron J plugin of Image J software were used for quantitative analysis of CNF length (CNFL), CNF density (CNFD), corneal nerve branch fiber density (CNBD), main branch length density, branch length density, corneal nerve fiber tortuosity (NT) score, and LCs density.

Personalized neoantigen cancer vaccines: current progression, challenges and a bright future.

Tumor neoantigens possess specific immunogenicity and personalized therapeutic vaccines based on neoantigens which have shown promising results in some clinical trials, with broad application prospects. However, the field is developing rapidly and there are currently few relevant review articles. Summarizing and analyzing the status of global personalized neoantigen vaccine clinical trials will provide important data for all stakeholders in drug development.

[Relationship between macrophage pyroptosis and atherosclerosis based on theory of "spleen in correlation with endoplasmic reticulum"].

The key pathogenesis of atherosclerosis(AS) in traditional Chinese medicine(TCM) lies in the combination of phlegm and stasis due to spleen deficiency. In Western medicine, it is believed that pyroptosis can lead to atherosclerosis, and endoplasmic reticulum stress has been shown to promote pyroptosis. According to the theories of " spleen in correlation with endoplasmic reticulum",guided by spleen governing transportation and transformation, and endoplasmic reticulum processing proteins, it is believed that the syndrome of phlegm combined with stasis due to spleen deficiency has similarities with the mechanism of macrophage pyroptosis induced by endoplasmic reticulum stress in accelerating the progression of AS.

Does one-stitch method of temporary ileostomy affect the stoma-related complications after laparoscopic low anterior resection in rectal cancer patients?

Purpose: This current study attempted to investigate whether one-stitch method (OM) of temporary ileostomy influenced the stoma-related complications after laparoscopic low anterior resection (LLAR).

Methods: We searched for eligible studies in four databases including PubMed, Embase, Cochrane Library, and CNKI from inception to July 20, 2023. Both surgical outcomes and stoma-related complications were compared between the OM group and the traditional method (TM) group.

The effect of lymph node ratio on the surgical outcomes in patients with colorectal cancer.

The current study aimed to evaluate the effect of lymph node ratio (LNR) on the short-term and long-term outcomes of colorectal cancer (CRC) patients who underwent radical CRC surgery. We retrospectively collected CRC patients who underwent radical surgery from Jan 2011 to Jan 2020 in a single-center hospital. The patients were divided into the high LNR group and the low group according to the median.

Alstomaphylines A-K, monoterpenoid bisindole alkaloids from Alstonia macrophylla with AChE inhibitory activity and cytotoxicity.

Eleven undescribed monoterpenoid bisindole alkaloids, alstomaphyines A-K (1-11), along with three known analogues were isolated from the leaves and stem bark of the Alstonia macrophylla. Compounds 1-3 were unprecedented dimerization alkaloids incorporating a macroline-type motif with an ajmaline-type motif via a C-C linkage. Their structures and absolute configurations were elucidated by extensive spectroscopic analysis, electronic circular dichroism (ECD) calculation, and CD exciton chirality method.

Bis-piperidine alkaloids from the peels of .

Four new alkaloids, arecatines A-D (-), were isolated from the peels of . Compound is an unusual piperidine-pyridine hybrid alkaloid, whereas compounds - feature bis-piperidine alkaloids. Their structures were elucidated by UV, IR, HRESIMS, and NMR spectra analysis.

Mass Transfer Analysis for Achieving High-Rate Lithium-Air Batteries.

Lithium-air batteries (LABs) have aroused worldwide interest due to their high energy density as a promising next-generation battery technology. From a practical standpoint, one of the most pressing issues currently in LABs is their poor rate performance. Accelerating the mass transfer rate within LABs is a crucial aspect for enhancing their rate capability.

Is recovery enhancement after gastric cancer surgery really a safe approach for elderly patients?

Background: This study aimed to evaluate the safety of enhanced recovery after surgery (ERAS) in elderly patients with gastric cancer (GC).

Aim: To evaluate the safety of ERAS in elderly patients with GC.

Methods: The PubMed, EMBASE, and Cochrane Library databases were used to search for eligible studies from inception to April 1, 2023.

Predictive value of red blood cell distribution width and hematocrit for short-term outcomes and prognosis in colorectal cancer patients undergoing radical surgery.

Background: Previous studies have reported that low hematocrit levels indicate poor survival in patients with ovarian cancer and cervical cancer, the prognostic value of hematocrit for colorectal cancer (CRC) patients has not been determined. The prognostic value of red blood cell distribution width (RDW) for CRC patients was controversial.

Aim: To investigate the impact of RDW and hematocrit on the short-term outcomes and long-term prognosis of CRC patients who underwent radical surgery.

A Rotating Cathode with Periodical Changes in Electrolyte Layer Thickness for High-Rate Li‒O Batteries.

Li-O batteries (LOBs) possess the highest theoretical gravimetric energy density among all types of secondary batteries, but they are still far from practical applications. The poor rate performance resulting from the slow mass transfer is one of the primary obstacles in LOBs. To solve this issue, a rotating cathode with periodic changes in the electrolyte layer thickness is designed, decoupling the maximum transfer rate of Li and O.

A new triterpenoid saponin and a new natural saponin from the roots of willd.

Sixteen triterpenoid saponins were isolated from the roots of Willd., including a new triterpenoid saponin and new natural saponin that was characterised by NMR for the first time, along with 14 known triterpenoid saponins. The structures of the compounds were established by 1D and 2D NMR spectroscopy, HR-ESI-MS, and comparison with the literature.

Early postoperative complications after transverse colostomy closure, a retrospective study.

Background: Ostomy is a common surgery usually performed to protect patients from clinical symptoms caused by distal anastomotic leakage after colorectal cancer (CRC) surgery and perforation or to relieve intestinal obstruction.

Aim: To analyze the complications after transverse colostomy closure.

Methods: Patients who underwent transverse colostomy closure from Jan 2015 to Jan 2022 were retrospectively enrolled in a single clinical center.

Single-port laparoscopic appendectomy using new surgical procedure versus conventional three-port laparoscopic appendectomy.

The aim of this study was to compare the clinic outcomes between new single-port laparoscopic appendectomy (NSLA) and conventional three-port laparoscopic appendectomy (CTLA) for patients with acute appendicitis. Patients who were diagnosed with acute appendicitis and underwent appendectomy were retrospectively collected from a single clinical center from September 2021 to June 2023. Baseline characteristics, surgical information, and postoperative information were compared between the NSLA group and the CTLA group.

Correction: The {CuI} cluster bearing metal organic frameworks: crystal structures and fluorescence detecting performances towards cysteine and explosive molecules.

Correction for 'The {CuI} cluster bearing metal organic frameworks: crystal structures and fluorescence detecting performances towards cysteine and explosive molecules' by Jiang Jiang , , 2024, , 706-714, https://doi.org/10.1039/d3dt03363e.

Colonoscopy plays an important role in detecting colorectal neoplasms in patients with gastric neoplasms.

Background: Gastric cancer (GC) and colorectal cancer (CRC) are the fifth and third most common cancer worldwide, respectively. Nowadays, GC is reported to have a potential predictive value for CRC, especially for advanced CRC.

Aim: To evaluate the necessity of colonoscopy for gastric neoplasm (GN) patients.

Remission of Nonalcoholic Fatty Liver Disease After Radical Surgery in Patients with Colorectal Cancer: A Single-Center Retrospective Study.

The purpose of this study was to investigate the relationship between remission of nonalcoholic fatty liver disease (NAFLD) and radical surgery for colorectal cancer (CRC) patients. From January 2014 to December 2021, data of patients with concurrent CRC and NAFLD who underwent radical surgery in a single-center hospital were retrospectively collected. NAFLD was defined as a mean computed tomography (CT) liver attenuation value of <40 Hounsfield units (HUs).

Effect of intraoperative blood loss on postoperative complications and prognosis of patients with colorectal cancer: A meta‑analysis.

The purpose of the present study was to evaluate whether the amount of intraoperative blood loss (IBL) affects the complications and prognosis of patients with colorectal cancer (CRC). The PubMed, EMBASE and the Cochrane Library databases were used to search for eligible studies from inception to November 30, 2020. Hazard ratios (HRs) and 95% confidence intervals (Cls) were pooled up.

Quality and educational content of Douyin and TikTok short videos on early screening of rectal cancer.

Background And Aim: The aim of this study was to assess the quality and content of videos on Douyin and TikTok for their educational role on early screening of rectal cancer (RC).

Methods: We conducted a search for videos related to RC on the Douyin and TikTok applications on 20 April 2023. The search was conducted in Chinese on Douyin and in English and Japanese on TikTok.