Objective To study the effects of zinc on the expression of zinc transporter-7( ZnT-7) in the proliferation of the rat growth plate chondrocytes. Methods Growth plate chondrocytes were isolated from rih cartilage of Wistar rat. The cell3 were treated with zinc chelating agent N, N, N', N'-tetrakis (2-pyridylmethyl )ethylene-diamine (TPEN) of different concentration (0,5,10 and 20 μmol/L) for 12 horns. The expression of rat growth plate chondrocytes specificity collagen type Ⅱ was detected by immunohisloehemistiy. The localization of ZnT-7 was checked by immunofluorescent staining. Real-time RT-PCR and Western blot were used to measure the expression level of ZNT-7 in the cell. Results The result of the immunofluorescence showed that ZnT-7 located in the Golgi apparatus. The expression level of ZnT-7 was slightly higher in the cells treated with 5 μ-mol/L TPEN than the control group, while it was lower in the cells treated with 10 or 20 μmol/L TPEN than the control group. Conclusion ZnT-7 locates in Golgi apparatus and maintains the zinc ion stabilization in the condition of the zinc depletion.

OBJECTIVETo study the chemical constituents of aerial parts of Ammopiptanthus mongolicus.

METHODIsolation and purification were carried out on silica gel, Sephadex LH-20 and HPLC column chromatography. The structures of the compounds were identified by physico-chemical properties and spectral analysis.

RESULTNine compounds were isolated and identified as (+)-maackiain (1), brevifolin (2), 7-hydroxy-4'-methoxy isoflavanone (3), daidzein 4',7-diglucoside (4), genistein 4', 7-di-O-beta-D-glucoside (5), isolupalbigenin (6), ononin (7), beta-sitosterol (8), beta-daucosterol (9).

CONCLUSIONCompounds 2, 4 - 6 were obtained from the genus Ammopiptanthus for the first time.

Chromatography, Agarose ; methods ; Chromatography, High Pressure Liquid ; methods ; Fabaceae ; chemistry ; Glucosides ; chemistry ; isolation & purification ; Isoflavones ; chemistry ; isolation & purification ; Plant Extracts ; chemistry ; isolation & purification ; Plant Leaves ; chemistry ; Pterocarpans ; chemistry ; isolation & purification ; Silica Gel ; Sitosterols ; chemistry ; isolation & purification ; Taxoids ; chemistry ; isolation & purification

Objective To investigate the ultrasonographic characteristics,pathological diagnosis and surgical treatment strategy of follicular thyroid carcinoma (FTC).Methods The clinical data of 10 patients with FTC confirmed by histopathology from Jul.2013 to Oct.2017 in Beijing Friendship Hospital,Capital Medical University were retrospectively analyzed including 3 males and 7 females with mean age of 41.5 (15 to 68) years old.The clinical data including preoperative ultrasonographic features,fine needle aspiration results,intraoperative frozen section examination and surgical treatments of these 10 patients were retrospectively analyzed.Descriptive methods were used for Statistical analysis.Results Ultrasonography was performed in all 10 patients,and frozen section examination was performed in 6 patients,of which,5 were considered capsular invasion.Ipsilateral centralcompartment neck dissection was performed in 2 patients,no node metastasis was found.Reoperation were performed in 5 patients with total or near total thyroidectomy.No severe complications such as persistent hypoparathyroidism and recurrent laryngeal nerve injury occurred in all 10 patients.The median follow-up time was 34.4 months,and no one died during the follow-up period.Conclusions Preoperative diagnosis of FTC is difficult.The reoperation rate is higher than that of papillary thyroid carcinoma.Lobectomy plus isthmusectomy should be the initial surgical procedure for follicular tumors,while neck dissection is not recommended.

Objective To investigate the changes of coagulatory function in septic rats induced by cecal ligation and puncture(CLP). Methods Cecal ligation and puncture(CLP)were performed to induce sepsis in SD rats. Coagulation indexes were detected at 8,16 and 48 h after operation, and histopathological changes of the lung, kidney, liver and spleen were examined using HE staining. Results The 12-day survival rate of the CLP-induced septic rats was 30%,with an acute onset and high mortality. In the acute phase of disease development of the CLP rats, the activated partial thromboplastin time(APTT)was prolonged(P<0.05)at 8 h,the prothrombin time(PT)was prolonged at 16 h (P<0.05), the factor XII activity in the endogenous coagulation pathway and the factor VII activity in the extrinsic coagulation pathway showed a transient inhibition, the thrombin time(TT)was prolonged at 48 h(P<0.01), and the content of fibrinogen(FIB)was increased gradually from 16 h(P<0.001). Among the other important coagulation and anticoagulation indexes,the number of platelets(PLT)was decreased gradually from 8 h(P<0.01),while the number of vWF:Ag increased gradually from 8 h(P<0.001). The D-dimer amount gradually increased from 16 h(P<0.05),and the amount of PS:Ag significantly decreased until 48 h(P<0.001). However, there was no significant change in the antithrombin-III(AT-Ⅲ)content. The histopathological examination showed that there are different degrees of damages in the lung,kidney,liver and spleen tissues,but no obvious venous thrombosis and bleeding were found. Conclusions In the acute phase,there is coagulatory dysfunction in the septic rats,however,no histopathological changes such as venous thrombosis and bleeding were observed in the lung,kidney,liver and spleen tissues due to coagulatory dysfunction.

Objective Previous studies suggested that overerpression of Slit2 results in abnormal Alzheimer's disease-like behavior and cognition impairment in mice. The aim of this study is to investigate the relationship between overerpression of Slit2 and accumulation and clearance of amyloid-β in aging mice by comparing the differential expression of genes for accumulation and clearance of amyloid-β in aging Tg-Slit2 and Tg-2576 mice. Methods 14-month old male C57BL/6, Tg-Slit2 and Tg-2576 mice were used to detect the expression of Aβ1 - 40 and Aβ1 - 42 in brain by immunohistochemistry. Further, the total RNA in the brain of these mice were extracted, identified and inversely transcripted to cDNA, then the cDNA was detected by PCR array. The expression of genes in the brain of Tg-Slit2 and Tg-2576 mice were analyzed. Results Comparing with the Tg-2576 mice in the same age, accumulation of Aβ was not found in the brain of Tg-Slit2 and C57BL/6 mice. The result from PCR array analysis showed that comparing with the same aged C57BL/6 mice, there were 16 up-regulated genes and 8 down-regulated genes in the brain of Tg-Slit2 mice and 14 up-regulated genes and 17 down-regulated genes in the brain of Tg-Slit2 mice. The expression of amyloid beta precursor protein (APP) in the brain of the three group mice was not changed. The expression of presenilin 2 ( Psen2) related with Aβ production was significantly up-regulated in the Tg-2576 mice. In addition, the expression of low density lipoprotein receptor-related protein ( LRP) 6 and 9 were markedly decreased in the Tg-2576 mice. Notably, these genes were not changed in the brain of the aging Tg-Slit2 mice. Conclusions The accumulation of Aβ in the brain are not found in 14-month Tg-Slit2 mice, In addition, different from Tg-2576 mice, the significant changes of expression of Aβ-related genes is not found in the brain of Tg-Slit2 mice.

Objective:To explore the relationship between doing housework and gait speed(GS)in order to identify ways to maintain physical capability in elderly people.Methods:A nationwide cross-sectional survey was conducted from Jan.2011 to Dec.2011.Subjects in this survey, with a sample of 2 519 males and 2 541 females aged ≥60 years, came from six regions across the country and satisfactorily completed a GS test.A GS in the lower 20% of the reference population(<0.7 m/s)was used as the cut-off point to define slow GS(SGS). Housework was defined as activities such as house cleaning, shopping, cooking and taking care of grandchildren and a response of"often"(≥5 d/week)was considered as doing housework.Propensity Score Matching(PSM)was performed to select comparable sub-groups of the study population to evaluate the association between housework and GS.Results:There were 3 290 subjects(1 645 pairs)selected by PSM.Logistic regression analysis showed that doing housework was inversely associated with SGS, and housework activities reduced the risk of SGS by 60%( OR=0.40, 95% CI: 0.35-0.46, P<0.01). Conclusions:Elderly people who conduct housework often are more likely to maintain GS and therefore should be encouraged to engage in daily activities to help maintain adequate physical performance.

Neoadjuvant chemoradiotherapy (nCRT)+ total mesorectal excision (TME) has become the standard mode of treatment for locally advanced rectal cancer(LARC). However, the sensitivity of different patients to nCRT varies greatly, some patients can get pathological complete response (pCR), and their long-term survival is significantly improved, Some patients'tumors continue to progress, therefore, accurate prediction of whether pCR can be achieved after nCRT is very important for guiding individualized treatment of patients. Current studies have shown that some accessible clinical factors, such as age, pathological types of tumors, TNM staging, circumferential extent of tumor, distance to the anal verge, CEA level, neutrophil lymphocyte ratio, can be used to predict whether pCR can be achieved.This article reviews the progress of clinical predictors of pCR in LARC after nCRT.

Immunotherapy has significantly improved clinical outcomes of non-small cell lung cancer (NSCLC), however, along with the popularization of immunotherapy, immune resistance has become an unavoidable problem. Immunotherapy can induce extensive cellular and molecular alterations in the tumor microenvironment. Considering the mechanisms of immune resistance are not yet fully understood and the efficacy of standard chemotherapy regimens is limited, more effective coping strategies based on resistance mechanisms are urgently needed. In this review, we intend to summarize the known mechanisms of immune resistance and feasible strategies, so as to provide a foundation for clinicians to develop more individualized and precise regimens and finally improve patients' prognosis.
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Humans ; Carcinoma, Non-Small-Cell Lung/drug therapy* ; Lung Neoplasms/drug therapy* ; Prognosis ; Immunotherapy ; Tumor Microenvironment

BACKGROUND: Immune checkpoint inhibitors (ICIs) therapy lacks viable biomarkers for response and prognosis prediction. This study aimed to investigate the correlation of peripheral blood laboratory test results combined with lymphocyte subset ratios to the response and prognosis of immunotherapy in advanced lung cancer. METHODS: Advanced lung cancer patients admitted to West China Hospital, Sichuan University from May 2021 to July 2023 were prospectively enrolled in this study. Clinical data and peripheral blood were collected before and after treatment and lymphocyte subset ratios were analyzed by flow cytometry. Logistic regression was used to identify factors correlated to ICIs treatment efficacy. Cox modeling was applied to explore the prognostic factors. RESULTS: Logistic regression showed that the baseline level of transcription factor T cell factor 1 (TCF1)+CD8+ T cell ratio and peripheral white blood cell (WBC) count, lymphocyte percentage, cytokeratin 19 fragment (CYFRA21-1) after 1 cycle of ICIs treatment were the potential predictors for ICIs response (P<0.05). Cox regression analysis showed that the baseline level of TCF1+CD8+ T cell ratio (P=0.020) and peripheral WBC count after 1 cycle of ICIs treatment (P<0.001) were prognostic factors. CONCLUSIONS Patients with high baseline TCF1+CD8+ T cell ratio combined with low WBC counts and low CYFRA21-1 level after 1 cycle of ICIs treatment are more likely to benefit from ICIs therapy.
Humans ; Lung Neoplasms/drug therapy* ; Carcinoma, Non-Small-Cell Lung/drug therapy* ; T Cell Transcription Factor 1/genetics* ; Prognosis ; CD8-Positive T-Lymphocytes ; Immunotherapy