Aim: To establish a stable, short-time, low-cost and reliable murine model of meibomian gland dysfunction (MGD).
Methods: A filter paper sheet soaked in 1.0 mol/L sodium hydroxide (NaOH) solution was used to touch the eyelid margin of C57BL/6J mice for 10s to establish the model.
Prolonged exposure to environments with high concentrations of crystalline silica (CS) can lead to silicosis. Macrophages play a crucial role in the pathogenesis of silicosis. In the process of silicosis, silica (SiO) invades alveolar macrophages (AMs) and induces mitophagy which usually exists in three states: normal, excessive, and/or deficiency.
View Article and Find Full Text PDFSeveral epidemiologic and toxicological studies have widely regarded that mitochondrial dysfunction is a popular molecular event in the process of silicosis from different perspectives, but the details have not been systematically summarized yet. Thus, it is necessary to investigate how silica dust leads to pulmonary fibrosis by damaging the mitochondria of macrophages. In this review, we first introduce the molecular mechanisms that silica dust induce mitochondrial morphological and functional abnormalities and then introduce the main molecular mechanisms that silica-damaged mitochondria induce pulmonary fibrosis.
View Article and Find Full Text PDFHinokitiol is a natural monoterpene compound found in the heartwood of cupressaceous plants that have anticancer and anti-inflammatory properties. However, few studies have focused on its effect on iron-mediated cellular DNA damage. Here we show that hinokitiol exhibited unusual biphasic effects on iron-induced DNA damage in a molar ratio (hinokitiol/iron) dependent manner in HeLa cells.
View Article and Find Full Text PDFBoth interleukin (IL)-7 and human periodontal ligament cells (hPDLCs) have immunomodulatory properties. However, their combined effect on CD4T cells has never been studied. In this study, we aimed to investigate the effect of conditioned medium of hPDLCs treated with rhIL-7 on the differentiation of CD4T cells into regulatory T cells/T helper 17 cells (Treg/Th17 cells) and observe the effect of IL-7 on the immunomodulatory properties of PDLCs.
View Article and Find Full Text PDFToxicol Ind Health
April 2021
Silicosis is an occupational fibrotic lung disease caused by inhaling large amounts of crystalline silica dust. Transforming growth factor-β1 (TGF-β1), which is secreted from macrophages, has an important role in the development of this disease. Macrophages can recognize and capture silicon dust, undergo M2 polarization, synthesize TGF-β1 precursors, and secrete them out of the cell where they are activated.
View Article and Find Full Text PDFCaffeic acid phenethyl ester (CAPE) is an active polyphenol of propolis from honeybee hives, and exhibits antioxidant and interesting pharmacological activities. However, in this study, we found that in the presence of Cu(II), CAPE exhibited pro-oxidative rather than antioxidant effect: synergistic DNA damage was induced by the combination of CAPE and Cu(II) together as measured by strand breakage in plasmid DNA and 8-oxo-7,8-dihydro-2'-deoxyguanosine (8-oxodG) formation, which is dependent on the molar ratio of CAPE:Cu(II). Production of Cu(I) and HO from the redox reaction between CAPE and Cu(II), and subsequent OH formation was found to be responsible for the synergistic DNA damage.
View Article and Find Full Text PDFThe purpose of the present study was to investigate the effect of advanced glycated albumin (AGE-alb) on pyroptosis of macrophages and the underlying molecular mechanisms. RAW264.7 macrophages were treated with AGE-alb (1, 2, 4 and 6 g/L) and control albumin (C-alb, 4 g/L) for 24 h, or preincubated with MCC950 (1 μmol/L) for 1 h and then treated with AGE-alb (4 g/L) for 24 h.
View Article and Find Full Text PDFSilicosis is a serious occupational disease characterized by pulmonary fibrosis, and its mechanism and progression have not been fully elucidated yet. In this study, silicosis models of rat were established by a one-time dusting method, and the rats were sacrificed after 30, 60, and 120 days (herein referred to as the 30, 60, and 120 days groups, respectively). The rats without dust exposure were used as the control.
View Article and Find Full Text PDFSilicosis is a serious occupational disease affecting millions of related workers. Many studies showed lung macrophages play an important role in the disease. However, the changes of macrophages are not fully characterized and the mechanisms need further investigations.
View Article and Find Full Text PDFLong non‑coding RNAs (lncRNAs) are a specific group of RNA molecules that do not encode proteins. They have been shown to serve important regulatory functions in various biological and cell differentiation processes. However, the potential functions and regulatory mechanisms of lncRNAs that are associated with the osteogenic differentiation of human bone marrow mesenchymal stem cells (hBMSCs) remain to be elucidated.
View Article and Find Full Text PDFJ Cancer Res Ther
August 2018
Aim Of Study: Association of toll-like receptors (TLRs) with the risk of oral squamous cell carcinoma (OSCC) from the published reports is still conflicting. This study was conducted to evaluate the relationship between TLRs and the risk of OSCC using meta-analysis method.
Materials And Methods: The association studies were identified from PubMed and Cochrane Library on April 01 2015, and eligible investigations were included and synthesized using meta-analysis method.
This retrospective study used a population-based national registry to determine the impact of local treatment modalities on survival in patients with metastatic esophageal cancer (EC). The Surveillance Epidemiology and End Results (SEER) database was used to identify patients with metastatic EC from 1988 to 2012. A total of 9,125 patients were identified.
View Article and Find Full Text PDFTo assess the impact of the number of resected lymph nodes (RLNs) for survival in esophageal cancer (EC) patients treated with preoperative radiotherapy and cancer-directed surgery. The Surveillance Epidemiology and End Results (SEER) database was queried to identify EC patients treated from 1988 to 2012 who had complete data on the number of positive lymph nodes and number of RLNs. Kaplan-Meier survival analysis and Cox regression proportional hazard methods were used to determine factors that significantly impact cause-specific survival (CSS) and overall survival (OS).
View Article and Find Full Text PDFInt J Clin Exp Med
September 2013
Background: Aerosols are defined as the mixture of liquid or solid particles/droplets that are stably suspending in air. When carrying a certain amount of negative charge, they will be defined as negatively-charged aerosol. This report investigates the effect of negatively-charged aerosol on the healing of chronic wound.
View Article and Find Full Text PDFObjective: The purpose of this study is to retrospectively explore the utilization of coralline hydroxyapatite in maxillary sinus augmentation.
Method: One hundred and eighteen cases of sinus lift with coralline hydroxyapatite (CHA) were included in this study. In detail, simultaneous implantation was conducted in 78 patients (174 implants) and delayed implantation was done in 40 cases (82 implants) around 6 months after bone transplantation.
Oral Surg Oral Med Oral Pathol Oral Radiol
April 2013
Objective: This retrospective study was conducted to report the epidemiology of maxillofacial injuries of children <15 years old in China.
Study Design: Data collected in this study included age, sex, etiology, date of injury, anatomic site of injury, and treatment modality. Regarding treatment, conservative technique and surgery were both used.
J Craniomaxillofac Surg
September 2012
A clinical investigation was conducted to demonstrate the epidemiology of cranio-facial injuries inflicted by animals in southern-central part of China-the World's most populous eastern country. It consisted of a retrospective study of 149 patients and was carried out in our department. All the patients were attacked by animals, such as buffalo, cattle, donkey, horse, dog, cat, and rat.
View Article and Find Full Text PDFSichuan Da Xue Xue Bao Yi Xue Ban
July 2011
Objective: To investigate the influence of nilestriol (CCE3) and exercise on bone size and bone mass in ovariectomized (OVX) rats.
Methods: Forty eight (48) female Sprague-Dawley (SD) rats were divided randomly into six groups: (1) Normal control group, (2) Sham OVX group, (3) OVX group, (4) OVX + CCE3 group, (5)) OVX + exercise group, (6) OVX + CCE3 + exercise group. CCE (0.
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi
September 2010
Zhonghua Lao Dong Wei Sheng Zhi Ye Bing Za Zhi
November 2009
Objective: To study the effects of behind legs vibrations on erectile function in male rabbits through the concentration of plasma reproductive hormone and the expression of nitric oxide synthase (eNOS), endothelin-1 (ET-1) mRNA in vibrated male rabbits.
Methods: 30 male adult rabbits were assigned randomly to A group (vibration power: 3.02 m/s(2)), B group (vibration power: 6.
Zhongguo Ying Yong Sheng Li Xue Za Zhi
February 2009
Aim: To investigate the influence of CCE3 on bone mineral element metabolism and relative hormone in ovariectomized rats.
Methods: 24 female SD rats were divided randomly into 4 groups (n = 6): (1) Normal control; (2) sham ovariectomy; (3) ovariectomy(OVX); (4) OVX + CCE3.
Results: (1) Ca, Mg, S, Co, Mn, Zn reduced obviously and P increased in the bone of the OVX rats.
Zhongguo Ying Yong Sheng Li Xue Za Zhi
May 2006
Aim: To investigate the effect of exercise on bone mineral element metabolism and relative hormones in ovariectomized rats.
Methods: 24 female SD rats were divided randomly into 4 groups: (1) normal control, (2) sham ovariectomy, (3) ovariectomy (OVX), (4) OVX + exercise.
Results: (1) Ca, Mg, S,Co,Mn, Zn reduced obviously and P increases in bone of the OVX rats.