188 results match your criteria: "the Second Affiliated Hospital of University of South China[Affiliation]"

MOMP and MIP DNA-loaded bacterial ghosts reduce the severity of lung lesions in mice after Chlamydia psittaci respiratory tract infection.

Immunobiology

November 2019

College of Public Health, University of South China, 28 West Changsheng Rd., Hengyang, Hunan 421001, China; Key Laboratory of Hengyang for Health Hazard Factors Inspection and Quarantine, 28 West Changsheng Rd., Hengyang, Hunan 421001, China. Electronic address:

Chlamydia psittaciis a well known zoonotic pathogen that can lead to severe respiratory disease in poultry, pet birds and humans. Development of an effective and safe vaccine would be the most effective way to control C. psittaci infection.

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The N-terminal D1 domain of Treponema pallidum flagellin binding to TLR5 is required but not sufficient in activation of TLR5.

J Cell Mol Med

November 2019

Institution of Pathogenic Biology, Medical College, Hunan Provincial Key Laboratory for Special Pathogens Prevention and Control, Hunan Province Cooperative Innovation Center for Molecular Target New Drug Study, University of South China, Hengyang, China.

Syphilis is a chronic bacterial infection caused by Treponema pallidum (T pallidum) and the pathogenesis that T pallidum infection induces immunopathological damages in skin and other tissues remains unclear. We have previously reported that recombinant flagellins of T pallidum can elicit IL-6 and IL-8 transcriptions via TLR5 pathway. To identify the domains which induced the pro-inflammatory activity and the importance of the interactions between TLR5 and domains, homology-based modelling and comparative structural analyses revealed that Tpflagellins can combine with TLR5 directly.

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Celiac axis (CA) aneurysm is a rare vascular condition, consisting of only 3.6-4% of visceral artery aneurysms but is frequently life threatening and can result in death. A celiomesenteric trunk (CMT) is an anatomic anomaly in which the celiac and superior mesenteric arteries arise from a common trunk.

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The present study investigated the role of long non-coding RNA (lncRNA) small nucleolar RNA host gene 16 (SNHG16) in the human aortic smooth muscle cell (HASMC) proliferation and migration and explored the potential link between SNHG16 and atherosclerosis. Our results showed that platelet-derived growth factor (PDGF)-bb treatment promoted cell proliferation and migration with concurrent up-regulation of SNHG16 in HASMCs. Small nucleolar RNA host gene 16 overexpression promoted HASMC proliferation and migration, while SNHG16 knockdown suppressed cell proliferation and migration in PDGF-bb-stimulated HASMCs.

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Tanshinone IIA ameliorates non-alcoholic fatty liver disease through targeting peroxisome proliferator-activated receptor gamma and toll-like receptor 4.

J Int Med Res

October 2019

Guangdong Provincial Key Laboratory of Gastroenterology, Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, Guangdong Province, China.

Objective: To investigate the cellular mechanisms of action of tanshinone IIA on the fatty liver disease induced by a high-fat diet in an animal model of non-alcoholic fatty liver disease (NAFLD).

Methods: Adult male Sprague Dawley rats were randomized into one of three groups: regular rat diet (CON group) for 4 months; high-fat diet (HFD group) for 4 months; HFD for 2 months followed by tanshinone IIA treatment plus HFD (TAN group) for a further 2 months. A range of physical and biochemical markers of lipid accumulation and fatty liver disease were measured and compared between the groups.

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The authors report the case of a 56-year-old woman with mammary sparganosis due to infection with a plerocercoid tapeworm larva of Spirometra mansoni. Magnetic resonance imaging revealed an area of heterogeneous density in outer upper quadrant of the right breast, with a high likelihood of malignancy. During surgery for the removal of a granuloma, the parasite was discovered and excised.

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Objective: To explore the effect of gefitinib-coated balloon suppressive action on the excessive hyperplasia of intima after balloon injury of common carotid artery in rats and on the PI3K/AKT signal pathway.

Methods: MTT method and the expression of Bcl-2 and Caspase-3 proteins were detected in vitro; Adult SD rats were randomly split into 5 groups, namely sham group, model group, low-dosage gefitinib-coated balloon group, high-dosage gefitinib-coated balloon group, and paclitaxel-coated balloon group. The intimal proliferation of arteries, PCNA, P-AKT and PI3K protein expression, the cell apoptosis, expression of MMP9, TGFβ and IL6 mRNA were measured by hematoxylin and eosin (H&E) staining, immunohistochemistry, TUNEL staining, and RT-qPCR.

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Unlabelled: OBJECTIVETo investigate the roles and underlying mechanism of exogenous H2S (hydrogen sulfide) in attenuating the myocardial fibrosis in diabetic rats.

Methods: A total of 40 SD rats were randomly divided into 4 groups: control group, STZ group, STZ + H2S group and H2S group. To build the DM rat model , the rats in the STZ group and STZ + H2S group were injected streptozotocin (STZ) intraperitoneally, While the rats in the STZ + H2S group and the H2S group received sodium hydrosulfide (NaHS), which provides exogenous H2S.

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Background: Postinfarction ventricular septal rupture (PI-VSR) is a rare but devastating complication of acute myocardial infarction (AMI). Risk stratification in the acute phase is crucial for decision-making, and this study analyzed the risk factors for early mortality and the effects of various management options on the outcome of PI-VSR patients in the era of percutaneous intervention.

Methods: A total of 96 patients with PI-VSR were identified and divided into an acute-phase survivor group (n = 46, survived ≥2 weeks after admission) and a nonsurvivor group (n = 50, died within 2 weeks after admission).

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On the diagnosis and treatment of cutaneous and soft tissue tumours misdiagnosed as scars: Lessons from four cases.

Int Wound J

June 2019

Oncoplastic Surgery Subspecialty, Department of Plastic and Reconstructive Surgery, Shanghai Ninth People's Hospital, Shanghai Jiao Tong University School of Medicine, Shanghai, China.

Some types of skin and soft tissue tumours may be misdiagnosed as scars because of the scar-like manifestation or the history of injury. It is generally believed that injuries will activate wound healing, ultimately ending in fibrosis. Because of the tumour-promoting properties of both the microenvironment of the wound and the wound-healing process that may go awry, there is a likelihood that injuries may trigger tumour growth.

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[Clinical characteristics and prognostic analysis of sudden sensorineural hearing loss with metabolic syndrome].

Lin Chuang Er Bi Yan Hou Tou Jing Wai Ke Za Zhi

January 2019

Department of Otolaryngology Head and Neck Surgery, the Second Affiliated Hospital of University of South China, Hengyang, 421001, China.

To analyze the clinical characteristics and prognosis of sudden sensorineural hearing loss (SSNHL) with metabolic syndrome (MetS).Records of 212 patients with SSNHL treated in our department were retrospectively reviewed, including gender, age,course of the disease, concomitant time of tinnitus and vertigo, concomitant rate of hypertension and diabetes mellitus, BMI, systolic pressure, diastolic pressure, HDL-C, TG, fasting plasma glucose level, severity of hearing loss and audiograms. All patients were divided into two groups, the MetS group and the Non-MetS group, and the clinical characteristics and prognosis between two groups were compared.

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The outer membrane protein Tp92 of Treponema pallidum induces human mononuclear cell death and IL-8 secretion.

J Cell Mol Med

December 2018

Institute of Pathogenic Biology and Key Laboratory of Special Pathogen Prevention and Control of Hunan Province, Collaborative Innovation Center for New Molecular Drug Research, University of South China, Hengyang, China.

Treponema pallidum is the pathogen that causes syphilis, a sexually transmitted disease; however, the pathogenic mechanism of this organism remains unclear. Tp92 is the only T. pallidum outer membrane protein that has structural features similar to the outer membrane proteins of other Gram-negative bacteria, but the exact functions of this protein remain unknown.

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Plasmid DNA encoding flagellin FlaB3 was used as a vaccination candidate for the evaluation of immunogenicity and protection against Treponema pallidum subsp. pallidum dissemination. First, intramuscular injection of the flagellin encoded by the plasmid DNA into New Zealand rabbits elicited both humoral and cellular immune responses.

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Purpose: Oxidative stress is an important mechanism for diabetic nephropathy. Studies showed that hemo oxygenase-1 (HO-1) expression in renal tissue of patients with diabetic nephropathy has upregulated, while the HO-1 can protect the body through anti-oxidative stress. The study aimed to preliminarily explore the molecular mechanism by observing the effect of Sitagliptin on HO-1 expression in renal tissue of rats with diabetic nephropathy.

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The purpose of this study was to investigate the expression profile of circular RNA (circRNA) in gastric cancer cells MGC-803, SGC-7901 and NCI-N87 with different degrees of differentiation and normal gastric epithelial cells GES-1. High throughput circRNA microarray technique was used to detect the differential expression of circRNA between three kinds of differentiated gastric cancer cells and normal gastric epithelial cells. The interaction of microRNAs (miRNAs) with circRNAs was predicted by bioinformatics software, and circRNA, which might have great significance in gastric cancer, was identified by literature search.

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Renal interstitial fibrosis is a common renal injury resulted from a variety of chronic kidney conditions and an array of factors. We report here that Notch3 is a potential contributor. In comparison to 6 healthy individuals, a robust elevation of Notch3 expression was observed in the renal tubular epithelial cells of 18 patients with obstructive nephropathy.

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HBV infection and extra-hepatic cancers in adolescents and 20s: A retrospective study in China.

Cancer Epidemiol

August 2018

Department of Gastroenterology, Nanfang Hospital, Southern Medical University, Guangzhou, China; Liver Research Center, Brown University, Providence, USA. Electronic address:

Background: The mean age at cancer diagnosis is younger in hepatitis B virus (HBV) infected than non-infected patients. It remains unknown whether this association reflects an increase in the incidence rates of extra-hepatic cancers in adolescents and younger.

Methods: We examined 10 common extra-hepatic cancers (lung, breast, gastric, prostate, esophageal, rectal, cervical, nasopharyngeal, lymphatic, and urinary bladder) among patients diagnosed at three Chinese hospitals during 2007-2016.

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The present study investigated the molecular mechanism by which microRNA-206 (miR-206) targets Annexin A2 (ANXA2) expression and inhibits the invasion and metastasis of prostatic cancer cells through regulation of the epithelial-mesenchymal transition (EMT). Using bioinformatics analysis, miR-206 was identified as the most promising candidate miRNA that targeted . Prostate tissue specimens from 60 patients with prostate cancer, 30 patients with metastatic prostate cancer and 20 patients with benign prostatic hyperplasia (BPH) were examined for ANXA2 protein expression by immunohistochemistry and western blotting and for miR-206 expression by reverse transcription-quantitative polymerase chain reaction.

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The mammalian target of rapamycin, mTOR, is a serine-threonine protein kinase downstream of the phosphatidylinositol 3-kinase (PI3K)-AKT axis. The pathway can regulate cell growth, proliferation, and survival by activating ribosomal kinases. Recent studies have implicated the mTOR signaling pathway in ovarian neoplasms, polycystic ovary syndrome (PCOS) and premature ovarian failure (POF).

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This study aims to investigate the role and regulatory mechanism of the Hydrogen sulfide (HS) in amelioration of rat myocardial fibrosis induced by thyroxine through interfering the autophagy via regulating the activity of PI3K/AKT1 signaling pathway and the expression of relative miRNA. 40 adult male SD rats were randomly divided into 4 groups (n = 10): the control group, the thyroxine model group (TH group), the model group with HS intervention (TH + HS group) and the normal group with HS intervention (HS group). Pathological changes were observed via H&E staining and Masson staining, Expressions of MMPs/TIMPs, PI3K/AKT, autophagy-related proteins in myocardial tissues were detected via Western blotting, and the expressions of miR-21, miR-34a, miR-214 and miR-221 were detected via RT-qPCR.

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Micro-CT study of the human cochlear aqueduct.

Surg Radiol Anat

June 2018

Department of Otolaryngology Head and Neck Surgery, First Affiliated Hospital of Guangxi Medical University, No. 6 Shuangyong Road, Nanning, 530021, Guangxi, China.

Objective: The anatomic structure of the cochlear aqueduct (CA) in human temporal bone specimens was observed using micro-computed tomography (CT).

Materials And Methods: Micro-CT scanning of 18-µm-thick slices was performed on 30 slides of human temporal bone specimens to observe the CA structure and its relationship with its surroundings. The length, internal and external apertures, and the narrowest width of the CA were measured.

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Purpose: We aimed to determine changes in miR-17-92 cluster expression in serum and granulocytes from patients with antithyroid drug (ATD)-induced agranulocytosis.

Methods: In this study, real-time polymerase chain reaction (PCR) was used to detect serum miR-17-92 expression levels in 20 ATD-induced agranulocytosis and 16 control patients. Importantly, dynamic changes in neutrophil counts from granulocytopenia to agranulocytosis were observed in 6 of the 20 patients.

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Flagellin is a classical pathogen-associated molecular pattern that can evoke a robust immune response. We have demonstrated previously that three full-length flagellins of Treponema pallidum, namely FlaB1, FlaB2 and FlaB3, did have diagnostic value in the serodiagnosis of syphilis. Here, we selected and constructed three recombinant fragments of each complete FlaB, both the conserved N-terminal and the C-terminal region, and the middle variable part, with the goal of exploring fragments unique to Treponema pallidum for use as antigen targets in a fragment-based serological test.

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Secondary syphilis (SS) has always been puzzling for the clinicians because of the similarity of the appearance of skin rashes with other dermatoses. Serological assays are useful, but less sensitive at an early stage of SS or when patients are immunodeficient. Therefore, there is an urgent need to develop a rapid and effective tool for the diagnosis of SS, which may play an important role in the control of epidemic syphilis outbreaks.

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