180 results match your criteria: "the Second Affiliated Hospital of Guangdong Medical University[Affiliation]"

Sepsis-induced acute lung injury (ALI) is a common acute and severe reason of death in the intensive care unit. Although the pathogenesis is complicated and multifactorial, elevated inflammation and oxidative stress are considered as fundamental mechanisms for the progression of ALI. Anemonin is a natural compound with diverse biological properties including anti-inflammatory and anti-oxidative effects.

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The widespread use of perfluorooctanesulfonic acid (PFOS) has raised concerns regarding its potential on pregnant women, particularly in relation to the development of pre-eclampsia (PE). This study investigates the impact of PFOS exposure on the LncRNA/Rnd3 axis in pregnant mice and its association with trophoblast cell functions in PE. Bioinformatics analysis revealed PFOS-related gene alterations in PE, with pathways enriched in apoptotic signaling and cytokine interactions.

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Obstructive sleep apnea (OSA) often leads to complications in the elderly. This study compares the usefulness of five screening tools for OSA in elderly patients. Data from elderly patients diagnosed with OSA, collected from the Sleep Medicine Center of the First Affiliated Hospital of Guangzhou Medical University from January 2012 to June 2017, is analyzed.

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Aim: Breast cancer (BC) is the most frequently diagnosed malignancy worldwide, necessitating continued research into its molecular mechanisms. Circular RNAs (circRNAs) are increasingly recognized for their role in various cancers, including BC. This study explores the role of circRNA kinesin family member 4A (circKIF4A) in BC progression and its underlying molecular mechanisms.

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N6-methyladenosine regulates metabolic remodeling in kidney aging through transcriptional regulator GLIS1.

BMC Biol

December 2024

Department of Orthodontics, School and Hospital of Stomatology, Liaoning Provincial Key Laboratory of Oral Diseases, China Medical University, Shenyang, 110001, China.

Background: Age-related kidney impairment, characterized by tubular epithelial cell senescence and renal fibrosis, poses a significant global public health threat. Although N6-methyladenosine (m6A) methylation is implicated in various pathological processes, its regulatory mechanism in kidney aging remains unclear.

Methods: An m6A-mRNA epitranscriptomic microarray was performed to identify genes with abnormal m6A modifications in aged human kidney tissues.

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Iron-glucose oxidase nanogel assembly for amplified starvation-ferroptosis anti-tumor therapy.

Int J Biol Macromol

December 2024

Fujian Provincial Key Laboratory of Innovative Drug Target Research and State Key Laboratory of Cellular Stress Biology, School of Pharmaceutical Sciences, Xiamen University, Xiamen, PR China. Electronic address:

Developing advanced and effective enzyme-drug systems for cancer treatment is of significant interest. Herein, a novel approach is reported to create a highly active and robust enzyme-drug system. Glucose oxidase nanogels (nGOx) are first synthesized by polymerization on the surface of GOx using vinylimidazole as comonomers.

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Background: To identify the risk factors for bronchiectasis patients with active pulmonary tuberculosis (APTB) and to develop a predictive nomogram model for estimating the risk of APTB in bronchiectasis patients.

Methods: A retrospective cohort study was conducted on 16,750 bronchiectasis patients hospitalized at the Affiliated Hospital of Guangdong Medical University and the Second Affiliated Hospital of Guangdong Medical University between January 2019 and December 2023. The 390 patients with APTB were classified as the case group, while 818 patients were randomly sampled by computer at a 1:20 ratio from the 16,360 patients with other infections to serve as the control group.

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Radiation-induced sarcomas (RIS) are iatrogenic malignancies that arise following high-dose radiotherapy, posing a significant clinical challenge due to their poor prognosis and resistance to conventional treatments. The incidence of RIS is increasing with advancements in radiotherapy techniques. This report presents a case of a 71-year-old male diagnosed with stage III rectal adenocarcinoma treated with neoadjuvant chemoradiotherapy and curative surgery.

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Adipokines and their potential impacts on susceptibility to myocardial ischemia/reperfusion injury in diabetes.

Lipids Health Dis

November 2024

Faculty of Chinese Medicine, State Key Laboratory of Quality Research in Chinese Medicine, Macau University of Science and Technology, Avenida Wai Long, Taipa, Macao, PR, China.

Article Synopsis
  • Coronary artery disease poses a significant public health risk, with myocardial ischemia often requiring immediate treatments like thrombolytic therapy to restore blood flow; however, this can lead to additional damage known as ischemia/reperfusion (I/R) injury.
  • Diabetes increases the heart's susceptibility to I/R injury due to issues with metabolism and heightened inflammatory responses, making the roles of adipokines crucial in this context.
  • The review explores recent findings on various adipokines, some of which offer protective effects against heart damage in conditions like obesity and diabetes, while others may worsen inflammation and damage, underscoring the need for further research in this area.
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Intratumoral T cells are associated with prognosis and chemotherapy benefit in gastric cancer.

Histol Histopathol

September 2024

Department of Critical Care Medicine, People's Hospital of Baoan Shenzhen, The 8th People's Hospital of Shenzhen, Shenzhen, Guangdong, PR China.

Tumor-infiltrating lymphocytes (TILs) have been described in various malignancies and viewed as a sign of anti-tumor immunity, so they are frequently thought to be implicated in the prognosis of cancers. However, little information is available on the association of the distribution pattern of TILs with clinical outcomes in gastric cancer (GC). TIL densities at different regions were assessed immunohistochemically in 59 GC patients to analyze their relationship with clinicopathological characteristics.

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Trends in high-risk human papillomavirus infection and cervical cytology of women in Karamay City, 2012-2021.

Sex Health

October 2024

Department of Gynecology, The First Affiliated Hospital of Xinjiang Medical University, State Key Laboratory of Pathogenesis, Prevention and Treatment of High Incidence Diseases in Central Asia, Urumqi 830011, People's Republic of China.

Article Synopsis
  • A study conducted in Karamay, China, analyzed changes in cervical lesions and high-risk HPV infections from 2012 to 2021 among women over 25 years old.
  • The data showed a decline in HR-HPV infection rates across all age groups, but an increase in cervical lesion detection, likely due to improved awareness and HPV vaccination efforts.
  • The findings highlight the need for targeted cervical cancer screening, especially in women aged over 55, despite the decreasing trend in HPV infections.
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  • This study investigates the role of Myocyte Enhancer Factor 2 C (MEF2C) in lung adenocarcinoma (LUAD) using bioinformatics and experimental methods to find its potential as a diagnostic marker.
  • Results show that lower MEF2C levels in LUAD patients correlate with less effective treatment outcomes, gender differences, and reduced overall survival, making MEF2C a significant prognostic factor.
  • MEF2C is involved in various biological processes and shows connections to immune system interactions and drug sensitivities, indicating its complex role in cancer biology.
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Regulation of B-cell function by miRNAs impacting Systemic lupus erythematosus progression.

Gene

January 2025

Laboratory Medicine Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, China; Clinical Research and Experimental Center, Affiliated Hospital of Guangdong Medical University, Zhanjiang, Guangdong 524001, China; Guangdong Provincial Key Laboratory of Autophagy and Major Chronic Non-communicable Diseases, Affiliated Hospital of Guangdong Medical University, Zhanjiang 524001, China. Electronic address:

Systemic lupus erythematosus (SLE) is a complex autoimmune disease marked by abnormal B-cell proliferation and increased autoantibodies. miRNAs play a crucial role in regulating B-cell dysfunction and SLE pathology. miRNAs influence DNA methylation, B-cell activation, and gene expression, contributing to SLE pathogenesis.

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Research progress on blood compatibility of hemoperfusion adsorbent materials.

Front Bioeng Biotechnol

October 2024

Department of Cardiovascular Surgery, Gaozhou People's Hospital, Gaozhou, Guangdong, China.

This comprehensive review examines the latest developments in improving the blood compatibility of hemoperfusion adsorbents. By leveraging advanced coating and modification techniques, including albumin-collodion, cellulose, hydrogel, and heparin coatings, notable enhancements in blood compatibility have been achieved across diverse adsorbent types, such as carbon-based, resin-based, and polysaccharide-based materials. Despite promising laboratory results, the intricate manufacturing processes and elevated costs present significant challenges for broad clinical application.

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Purpose: We aim to detect the effects of sivelestat on renal ischemia-reperfusion associated with AKI and also explore the underlying mechanism.

Materials And Methods: Mice, aged between 8 and 12 weeks, were randomly allocated among four distinct groups, respectively normal saline sham group(C), normal saline surgery group(I), sivelestat (50 mg/kg) sham group(S), sivelestat (50 mg/kg) surgery group(SI) (n=6, each group). In the surgical groups, the renal pedicles of mice were clamped with non-traumatic micro-aneurysm clamps, resulting in ischemia of the kidneys for 45 minutes.

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Aims: To explore the effect of postoperative hydrocodone analgesia on inflammatory factors, NSE levels, and cognitive function in elderly patients undergoing hip arthroplasty.

Methods: A retrospective analysis was conducted on elderly patients undergoing hip arthroplasty from January 2020 to December 2023. Among them, 43 patients with postoperative hydrocodone analgesia were included in an observation group, and 57 patients without postoperative hydrocodone analgesia in a control group.

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During the process of photoaging in the skin, Succinylated type I collagen has a significant effect on reversing the damage caused by UVB radiation, with the regulation of cellular ferroptosis being one of its important pathophysiological mechanisms. Specifically, Succinylated type I collagen reduces the expression of key cell cycle regulators P16, P21, and P53, as well as the ferroptosis-related factor Acyl-CoA Synthetase Long Chain Family Member 4 (ACSL4), induced by UVB radiation in cells and tissues. Meanwhile, it increases the expression of key factors Glutathione Peroxidase 4 (GPX4) and Solute Carrier Family 7 Member 11 (SLC7A11), which inhibit ferroptosis.

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Article Synopsis
  • Pulmonary arterial hypertension (PAH) is a severe condition associated with high blood pressure in the pulmonary arteries, leading to heart failure and increased death risk; this study explores its connection to genes related to hypoxia and cuproptosis.
  • The researchers used genetic data analysis, including single-cell RNA sequencing, to identify key genes linked to PAH and assessed immune cell differences, constructing a robust diagnostic model with a high accuracy rate.
  • The study identified several significant diagnostic genes, including specific markers tied to immune cell types, which could facilitate better understanding and diagnosis of PAH in the future.
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Isolation and Characterization of Exosomes Derived from Mouse Spleen Tissues.

J Vis Exp

September 2024

Scientific Research Center, the Second Affiliated Hospital of Guangdong Medical University, Guangdong Medical University; Medical Interdisciplinary Science Research Center of Western Guangdong, the Second Affiliated Hospital of Guangdong Medical University, Guangdong Medical University;

Article Synopsis
  • Exosomes (Exo) are small lipid-bilayer vesicles released by various cells, and they hold potential as biomarkers for diagnosing and predicting diseases due to their involvement in disease processes.
  • Tissue-derived Exosomes (Ti-Exo) are particularly valuable for understanding disease mechanisms because they reflect specific tissue environments and aid in cellular communication.
  • This study presents an effective method for isolating exosomes from mouse spleen tissue, utilizing Type I collagenase digestion and differential ultracentrifugation, and confirms their presence and purity through multiple analytical techniques.
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  • * A study comparing 54 AA patients to 66 controls found increased CRHR1 expression primarily in circulating monocytes of AA patients, suggesting a strong immunological component linked to stress.
  • * Higher CRHR1 levels were correlated with chronic AA and larger lesion sizes, indicating that stress factors may worsen the condition and highlighting the importance of immune system interactions in AA progression.
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Introduction: The autoimmune hair loss condition alopecia areata (AA) exacts a substantial psychological and socioeconomic toll on patients. Biotechnology companies, dermatology clinics, and research institutions are dedicated to understanding AA pathogenesis and developing new therapeutic approaches. Despite recent efforts, many knowledge gaps persist, and multiple treatment development avenues remain unexplored.

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Article Synopsis
  • Hearing impairment in children is linked to higher levels of anxiety and depression in both the children and their parents, particularly during the COVID-19 pandemic.
  • A study analyzed data from nearly 16,000 children and their parents, finding that those with hearing impairment had significantly increased odds of experiencing mental health issues.
  • The pandemic led to higher rates of delayed or canceled medical care for hearing-impaired children, which further exacerbated their anxiety levels.
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Effect of high-dose N-acetylcysteine on exacerbations and lung function in patients with mild-to-moderate COPD: a double-blind, parallel group, multicentre randomised clinical trial.

Nat Commun

September 2024

State Key Laboratory of Respiratory Disease & National Clinical Research Center for Respiratory Disease & National Center for Respiratory Medicine & Guangzhou Institute of Respiratory Health, The First Affiliated Hospital of Guangzhou Medical University, Guangzhou Medical University, Guangzhou, China.

Evidence for the treatment of patients with mild-to-moderate chronic obstructive pulmonary disease (COPD) is limited. The efficacy of N-acetylcysteine (an antioxidant and mucolytic agent) for patients with mild-to-moderate COPD is uncertain. In this multicentre, randomised, double-blind, placebo-controlled trial, we randomly assigned 968 patients with mild-to-moderate COPD to treatment with N-acetylcysteine (600 mg, twice daily) or matched placebo for two years.

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