Antigens ; immunology ; Antigens, Neoplasm ; drug effects ; immunology ; metabolism ; Gallbladder Neoplasms ; immunology ; metabolism ; pathology ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; Neoplastic Stem Cells ; immunology ; Octamer Transcription Factor-3 ; genetics ; metabolism ; Prostatic Neoplasms ; genetics ; metabolism ; pathology ; Tumor Cells, Cultured

Amino Acid Metabolism, Inborn Errors ; diagnosis ; metabolism ; therapy ; Diagnosis, Differential ; Diet ; Glutarates ; metabolism ; urine ; Humans ; Infant ; Male ; Riboflavin ; therapeutic use ; Treatment Outcome

Objective:To investigate the expression of Caveolin-1,GPR30 and Vimentin at tumor tissues of human papillary thyroid carcinoma( PTC) patients and analyze their associations for the possible clinical implication.Methods: Immunohistochemistry was used to analyze the expression of Caveolin-1, GPR30 and Vimentin in 76 PTC and 44 normal samples.The correlations of Caveolin-1, GPR30 and Vimentin expression with one another, and with several clinicopathological indicators were statistically analyzed.Results:In PTCs,the positive expression rates of Caveolin-1,GPR30 and Vimentin were 9.21%(7/76),80.26%(61/76) and 76.32%(58/76),respectively.Caveolin-1,GPR30 and Vimentin expression had significant correlations with TNM stages(P=0.005,P<0.001,and P<0.001,respectively) and with cervical lymph node metastasis(P≤0.001 for all).Meanwhile,Caveolin-1 ex-pression had a negative correlation with GPR30(rs=-0.528,P<0.001) and Vimentin(rs=-0.572,P<0.001).GPR30 and Vimentin expression were positively correlated ( rs=0.812, P<0.001 ).Caveolin-1 under-expression was accompanied by GPR30 or Vimentin over-expression had stronger correlation with LNM ( P=0.020 for Caveolin-1/GPR30 and P=0.001 Caveolin-1/Vimentin ) than did each alone;concomitant high expression of GPR30 and Vimentin had stronger correlation with LNM( P=0.005 for GPR30/Vimentin) than did each alone.And lower expression of Caveolin-1 accompanied by higher expression of GPR30 and Vimentin was significantly as-sociated with LNM as compared with cases not showing such expressing(P<0.001).Conclusion:These results demonstrated that the evaluation of Caveolin-1 ,GPR30 and Vimentin expression may be play an important role in the development and metastasis of PTC,and their biological function may relate with each other.

OBJECTIVEThrough observing the morphological changes of the prepared influenza viruses (H1N1) treated with the different concentration of Nonidet P-40 solutions and added with antibody against the influenza virus using transmission electron microscopy (TEM), to explore the principle of application of the internal antibody for immunoassay of influenza virus.

METHODSThrough treating the virus samples with serial diluted Nonidet P-40 solutions from 0.01% to 0.2% and/or not adding antibody against the influenza virus, then investigating the samples by TEM to obtain the morphological changes of the virions.

RESULTSThe serial images show that the denudation degree of the virions is proportional with the rise of NP-40 concentration, and partly denuded virion image appeared at 0.1% NP-40 treatment, also under this condition no influence was observed on antibody binding to the virus.

CONCLUSIONThis work demonstrated the interaction between influenza virion and its antibody under nonionic surfactants existing, which supports the advantages of sample preparation for immunoassay enveloped virus using internal antibody theoretically.

Animals ; Antibodies, Viral ; chemistry ; Chick Embryo ; Influenza A Virus, H1N1 Subtype ; drug effects ; ultrastructure ; Microscopy, Electron, Transmission ; Polyethylene Glycols ; pharmacology ; Protein Binding ; Viral Envelope Proteins ; chemistry ; Virion ; drug effects ; ultrastructure

Comparative Genomic Hybridization ; methods ; Female ; Humans ; Infant ; Wolf-Hirschhorn Syndrome ; diagnosis

OBJECTIVETo study the expression levels of ANXA1 and ANXA2 and elucidate their clinicopathological significance in adenocarcinoma, peritumoral tissues, adenomatous polyp and chronic cholecystitis of gallbladder.

METHODSEnVision(TM) immunohistochemical staining was used to detect the expression of ANXA1 and ANXA2 in paraffin-embedded tissue sections from resected specimens of adenocarcinoma (n = 108), peritumoral tissue (n = 46), adenomatous polyp (n = 15) and chronic cholecystitis (n = 35).

RESULTSThe positive rates and scores of ANXA1 and ANXA2 were significantly higher in adenocarcinoma (59.3%, 56.5%; 3.2 ± 0.9, 3.4 ± 0.8) than those in peritumoral tissues (34.8%, 1.1 ± 0.8, P < 0.01; 30.4%, 1.0 ± 0.8, P < 0.01), adenomatous polyp (26.7%, 0.9 ± 0.7, P < 0.05 or P < 0.01; 26.7%, 0.9 ± 0.8, P < 0.05 or P < 0.01) and chronic cholecystitis (17.1%, 0.7 ± 0.9, P < 0.01; 20.0%, 0.8 ± 0.8, P < 0.01). The benign lesions with positive ANXA1 and/or ANXA2 expression showed mild to severe atypical hyperplasia of the gallbladder epithelium. The positive rates of ANXA1 and/or ANXA2 were significantly lower in the well-differentiated adenocarcinoma, in a maximal diameter of < 2 cm, with no metastasis to lymph nodes and no invasion to surrounding tissues than those in the moderately or poorly-differentiated adenocarcinoma, in a maximal diameter of ≥ 2 cm, with metastasis to lymph nodes and invasion in surrounding tissues (P < 0.05 or P < 0.01). A high consistence was found between the expression levels of ANXA1 and ANXA2 (χ(2) = 67.84, P < 0.01), and a close positive correlation between the scores of ANXA1 and ANXA2 (r = 0.78, P < 0.01) in gallbladder adenocarcinoma. Kaplan-Meier analysis and multivariate Cox regression analysis showed that ANXA1 or ANXA2 was not an independent prognostic predictor in gallbladder adenocarcinoma.

CONCLUSIONThe expression levels of ANXA1 and/or ANXA2 may be important biological markers in the carcinogenesis, progression and biological behaviors of gallbladder adenocarcinoma.

Adenocarcinoma ; metabolism ; pathology ; surgery ; Adenocarcinoma, Mucinous ; metabolism ; pathology ; surgery ; Adenomatous Polyps ; metabolism ; pathology ; Adult ; Aged ; Annexin A1 ; metabolism ; Annexin A2 ; metabolism ; Cholecystectomy ; methods ; Cholecystitis ; metabolism ; pathology ; Female ; Gallbladder ; metabolism ; pathology ; Gallbladder Neoplasms ; metabolism ; pathology ; surgery ; Humans ; Lymphatic Metastasis ; Male ; Middle Aged ; Neoplasm Invasiveness ; Proportional Hazards Models ; Survival Rate

OBJECTIVETo investigate the presence of abnormal metabolism in the thalamus and hypothalamus in patients with first-episode depression.

METHODSThirty drug-naive patients with first-episode depression and 30 age-matched controls were scanned with proton magnetic resonance spectroscopy ((1)H-MRS) for Naa, Cho, Cr and mI.

RESULTSCompared with the control group, the patients showed significantly reduced mI and mI/Cr of the hypothalamus, reduced mI/Cr of the left thalamus, and lowered Cho, ml, and ml/Cr of the right thalamus (P<0.05).

CONCLUSIONPatients with first-episode depression may have myo-inositol and phosphoric acid metabolism disorder in the thalamus and hypothalamus with malfunction of cellular osmotic pressure adjustment mechanism. Abnormal mI/Cr in the thalamus and hypothalamus may represent an important biochemical change in advanced patients with depression.

Adolescent ; Adult ; Case-Control Studies ; Choline ; metabolism ; Creatine ; metabolism ; Depression ; diagnosis ; Female ; Humans ; Hypothalamus ; metabolism ; Inositol ; metabolism ; Magnetic Resonance Spectroscopy ; methods ; Male ; Middle Aged ; Protons ; Thalamus ; metabolism ; Young Adult

OBJECTIVE: To examine the expressive level of enhancer of zesle homolog 2 (EZH2) and phosphatase and tension homolog (PTEN), and to explore its clinicopathological significance in benign and malignant lesion of gallbladder. METHODS: EnVision immunohistochemical method was used to detect the expressive levels of EZH2 and PTEN in routinely paraffin-embedded sections in the resected specimens of gallbladder adenocarcinoma (n = 108), peritumoral tissues (n = 46), adenomatous polyp(n = 15), and chronic cholecystitis (n = 35). RESULTS: The positive rate of EZH2 was significantly higher in gallbladder adenocarcinoma than that in peritumoral tissues (chi(2) = 24.49, P < 0.01), adenomatous polyp(chi(2) = 11.68, P < 0.01), and chronic cholecystitis (chi(2) = 31.62, P < 0.01). The benign lesions in the positive cases of EZH2 and (or) the negative ones of PTEN showed the moderately- or severely- atypical hyperplasia of gallbladder epithelium. The positive rate of PTEN was significantly lower in gallbladder adenocarcinoma than that in peritumoral tissues(n = 20.20, P < 0.01), adenomatous polyp(chi(2)=10.81, P<0.01), and chronic cholecystitis (n = 29.83, P < 0.01).The positive rates of EZH2 were significantly lower in the highly-differentiated adenocarcinoma, the maximal diameter of mass < 2 cm, non-metastasis of lymphnodes, and non-infiltration of regional tissues than those in the moderately or low-differentiated adenocarcinoma, the maximal diameter > or = 2 cm, metastasis of lymphnode, and infiltration of regional tissues (P < 0.05 or P < 0.01). High inconsistency was found between the expression of EZH2 and PTEN in gallbladder adenocarcinoma (P < 0.05). CONCLUSION Expression of EZH2 and/or PTEN might be important biological markers in the carcinogenesis, progression, biological behaviors and prognosis of gallbladder adenocarcinoma.
Adenocarcinoma ; genetics ; pathology ; Adult ; Biomarkers, Tumor ; DNA-Binding Proteins ; biosynthesis ; Enhancer of Zeste Homolog 2 Protein ; Female ; Gallbladder Neoplasms ; genetics ; metabolism ; Gene Expression Regulation, Neoplastic ; Humans ; Male ; Middle Aged ; PTEN Phosphohydrolase ; biosynthesis ; Polycomb Repressive Complex 2 ; Prognosis ; Transcription Factors ; biosynthesis

OBJECTIVE Programmed death ligand-1 (PD-L1) and indoleamine 2, 3-dioxygenase 1 (IDO1) are immune checkpoints which can be induced by interferon-γ(IFN-γ) in the tumor microenvironment, leading to immune escape of tumors. Myricetin (MY) is a flavonoid distributed in many edible and medicinal plants. The aim of this study is to clarify the effect and the mechanism of MY on inhibiting IFN-γ-induced PD-L1 and IDO1 in lung cancer cells. METHODS Expressions of PD-L1 and major histocompatibility complex-I (MHC-I) were evaluated by flow cytometry and Western blotting, and the expression of IDO1 was measured by Western blotting. qRT-PCR was used to detect their mRNA levels. The function of T cells was evaluated using a co-culture system consist of lung cancer cells and the Jurkat-PD-1 T cell line that overexpressing PD-1. Molecular docking analysis, Western blotting and immunofluorescence were used for mechanism study. RESULTS MY potently inhibited IFN-γ-induced PD-L1 and IDO1 expression in human lung cancer cells, while didn't show obvious effect on the expression of MHC-I. In addition, MY restored the survival, proliferation, CD69 expression and interleukin-2 (IL-2) secretion of Jurkat-PD-1 T cells suppressed by IFN-γ-treated lung cancer cells in the co-culture system. Mechanistically, IFN-γ up-regulated PD-L1 and IDO1 at the transcriptional level through the JAK-STAT-IRF1 axis, which was targeted and inhibited by MY. CONCLUSION Our research revealed a new insight into the anti-tumor effects of MY which inhibited IFN-γ-induced PD-L1 and IDO1 expression, supporting the potential of MY in anti-tumor immunotherapy.

This study is to investigate the protective effect of longistyline A against corticosterone-induced neurotoxicity in PC12 cells. While PC12 cells were exposed to 100 micromol x L(-1) corticosterone for 48 h, cell survival rate was reduced and lactate dehydrogenase (LDH) release increased. In parallel, corticosterone caused significant elevations of DNA fragmentation, [Ca2+]i and caspase-3 activity. However, when the PC12 cells were incubated with longistyline A (4.0, 8.0 and 16.0 micromol x L(-1)) in the presence of 100 micromol x L(-1) corticosterone for 48 h, the effects were evidently alleviated, but dose-dependent manner was not obvious. In summary, longistyline A could generate a neuroprotective effect against corticosterone-induced neurotoxicity in PC12 cells possibly by decreasing [Ca2+]i and caspase-3 activity.
Animals ; Cajanus ; chemistry ; Calcium ; metabolism ; Caspase 3 ; metabolism ; Cell Survival ; drug effects ; Corticosterone ; toxicity ; DNA Fragmentation ; drug effects ; L-Lactate Dehydrogenase ; metabolism ; Molecular Structure ; Neuroprotective Agents ; isolation & purification ; pharmacology ; PC12 Cells ; Phenols ; isolation & purification ; pharmacology ; Plant Leaves ; chemistry ; Plants, Medicinal ; chemistry ; Rats