576
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Zhou Q, Gil-Krzewska A, Peruzzi G, Borrego F. Matrix metalloproteinases inhibition promotes the polyfunctionality of human natural killer cells in therapeutic antibody-based anti-tumour immunotherapy. Clin Exp Immunol 2013; 173:131-9. [PMID: 23607800 DOI: 10.1111/cei.12095] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 02/17/2013] [Indexed: 01/31/2023] Open
Abstract
Activation of human natural killer (NK) cells is associated with the cleavage of CD16 from the cell surface, a process mediated by matrix metalloproteinases (MMPs). In this report, we examined whether inhibition of MMPs would lead to improved NK cell antibody-dependent cell-mediated cytotoxicity (ADCC) function. Using an in-vitro ADCC assay, we tested the anti-tumour function of NK cells with three different therapeutic monoclonal antibodies (mAbs) in the presence of MMPs inhibitor GM6001 or its control. Loss of CD16 was observed when NK cells were co-cultured with tumour targets in the presence of specific anti-tumour antibodies, and was found particularly on the majority of degranulating NK responding cells. Treatment with MMPs inhibitors not only prevented CD16 down-regulation, but improved the quality of the responding cells significantly, as shown by an increase in the percentage of polyfunctional NK cells that are capable of both producing cytokines and degranulation. Furthermore, MMPs inhibition resulted in augmented and sustained CD16-mediated signalling, as shown by increased tyrosine phosphorylation of CD3ζ and other downstream signalling intermediates, which may account for the improved NK cell function. Collectively, our results provide a foundation for combining MMPs inhibitors and therapeutic mAbs in new clinical trials for cancer treatment.
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577
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Olivier CB, Weik P, Diehl P, Zhou Q, Brandt C, Geisen U, Moser M, Bode C. Dabigatran and rivaroxaban do not influence TRAP, ADP and AA induced platelet aggregation in cardiac patients. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht310.p4868] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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578
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Yang J, Feng L, Ren J, Wu G, Chen S, Zhou Q, Du Z, Zhang S, Hu C, Wu X, Ling L. Correlation between the severity of periodontitis and coronary artery stenosis in a Chinese population. Aust Dent J 2013; 58:333-8. [PMID: 23981215 DOI: 10.1111/adj.12087] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/12/2012] [Indexed: 11/28/2022]
Abstract
BACKGROUND The aim of this study was to evaluate the relationship between the severity of periodontitis and the extent and degree of coronary artery stenosis in a Chinese population. METHODS Patients (n = 853) with coronary artery stenosis confirmed by coronary angiography were eligible to take part in the study. Only subjects that were ≥60 years old, had ≥50% stenosis in at least one coronary artery, and did not have diabetes or a history of smoking were included (n = 115). After periodontal examination, including bleeding index, probing depth calculus index, plaque index and periodontal attachment loss, four groups were defined based on the severity of periodontitis: no periodontitis/gingivitis (M0, n = 19); mild periodontitis (M1, n = 27); moderate periodontitis (M2, n = 31); and severe periodontitis (M3, n = 38). The extent and degree of coronary artery stenosis was obtained by calculating the Gensini score (GS). RESULTS The GS was significantly greater in the M3 group compared with the M0 group. Multiple linear regression analysis revealed that probing depth and plaque index were significantly correlated with the GS. CONCLUSIONS The extent and severity of coronary artery stenosis in Chinese patients ≥60 years old is positively correlated with the severity of periodontitis.
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579
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St. Clair C, Ducie J, Zhou Q, Dao F, Kauff N, Spriggs D, Fleisher M, Iasonos A, Levine D. Uterine washing biomarkers as a novel screening tool for high-grade serous carcinoma. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.231] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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580
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Barlin J, Lutz M, Zhou Q, Clair CS, Leitao M, Iasonos A, Barakat R, Matias-Guiu X, Soslow R, Abu-Rustum N. Redefining stage I endometrial cancer: Incorporating histology, grade, myoinvasion, and whether or not lymph nodes were removed. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.237] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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581
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Barlin J, Zhou Q, Leitao M, Bisogna M, Olvera N, Hensley M, Schwartz G, Boyd J, Qin L, Levine D. Uterine leiomyosarcomas have reproducible molecular subtypes that correlate with survival. Gynecol Oncol 2013. [DOI: 10.1016/j.ygyno.2013.04.425] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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582
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Aksentijevich I, Zhou Q, Lee GS, Katan M, Datta S, Milner J, Khan J, Kastner D. OP0174 Exome sequencing identifies a hypermorphic missense mutation in the PLCG2 gene as the cause of a dominantly inherited autoinflammatory disease with immunodeficiency. Ann Rheum Dis 2013. [DOI: 10.1136/annrheumdis-2012-eular.1857] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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583
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Feener EP, Zhou Q, Fickweiler W. Role of plasma kallikrein in diabetes and metabolism. Thromb Haemost 2013; 110:434-41. [PMID: 23676986 DOI: 10.1160/th13-02-0179] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2013] [Accepted: 04/03/2013] [Indexed: 01/06/2023]
Abstract
Plasma kallikrein (PK) is a serine protease generated from plasma prekallikrein, an abundant circulating zymogen expressed by the Klkb1 gene. The physiological actions of PK have been primarily attributed to its production of bradykinin and activation of coagulation factor XII, which promotes inflammation and the intrinsic coagulation pathway. Recent genetic, molecular, and pharmacological studies of PK have provided further insight into its role in physiology and disease. Genetic analyses have revealed common Klkb1 variants that are association with blood metabolite levels, hypertension, and coagulation. Characterisation of animal models with Klkb1 deficiency and PK inhibition have demonstrated effects on inflammation, vascular function, blood pressure regulation, thrombosis, haemostasis, and metabolism. These reports have also identified a host of PK substrates and interactions, which suggest an expanded physiological role for this protease beyond the bradykinin system and coagulation. The review summarises the mechanisms that contribute to PK activation and its emerging role in diabetes and metabolism.
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584
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Yi XY, Zhou Q, Lin J, Chi LF, Chi WZ. Interaction between ALOX5AP-SG13S114A/T and COX-2-765G/C increases susceptibility to cerebral infarction in a Chinese population. GENETICS AND MOLECULAR RESEARCH 2013; 12:1660-9. [PMID: 23765972 DOI: 10.4238/2013.may.14.6] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
We made a case-control study to investigate a possible association between ALOX5AP-SG13S114A/T, COX-2-765G/C, and COX-1-50C/T polymorphisms with cerebral infarction in a Chinese population. A total of 411 cases with cerebral infarction were included; 411 controls matched for age, gender, and risk factors were also selected. The ALOX5AP-SG13S114A/T (rs10507391), COX-2-765G/C (rs20417), and COX-1-50C/T (rs3842787) polymorphisms were determined using PCR-RFLP. The generalized multifactor dimensionality reduction method was employed to detect gene-gene interactions. Based on single-gene analysis, there were no significant differences in the genotype and allele frequency distributions of ALOX5AP-SG13S114A/T, COX-2-765G/C, and COX-1-50C/T between the cerebral infarction group and controls. However, in those cases carrying ALOX5AP-SG13S114AA as well as COX-2-765CC, the risk of cerebral infarction increased significantly by 2.84 times (95%CI = 1.324-6.543). The single-gene ALOX5AP-SG13S114A/T, COX-2-765G/C, and COX-1-50C/T polymorphisms appear not to be associated with the development of cerebral infarction in Chinese populations. However, the interaction between ALOX5AP-SG13S114AA and COX-2-765CC apparently increases susceptibility to cerebral infarction.
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585
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Lopes LC, Spencer FA, Neumann I, Ventresca M, Ebrahim S, Zhou Q, Bhatnaga N, Schulman S, Eikelboom J, Guyatt G. Bleeding Risk in Atrial Fibrillation Patients Taking Vitamin K Antagonists: Systematic Review and Meta-Analysis. Clin Pharmacol Ther 2013; 94:367-75. [DOI: 10.1038/clpt.2013.99] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2013] [Accepted: 05/01/2013] [Indexed: 11/10/2022]
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586
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Mai HM, Zheng JW, Zhou Q, Yang XJ, Wang YA, Fan XD. Intralesional injection of pingyangmycin is a safe and effective treatment for microcystic lymphatic malformations in the tongue. Phlebology 2013; 28:147-52. [PMID: 22378834 DOI: 10.1258/phleb.2011.011082] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Objective To evaluate the efficacy and safety of intralesional injection of pingyangmycin for the treatment of microcystic lymphatic malformations (LMs) in the tongue. Methods Eighteen patients with tongue microcystic LMs were treated with intralesional injection of pingyangmycin. The concentration of the drug was 1 mg/mL with an addition of dexamethasone. Repeated injections were performed at an interval of 3–4 weeks. The results were evaluated by clinical examinations and Doppler ultrasonography scan. The follow-up period was 12 months to eight years after the last treatment and the mean follow-up time was three years. All patients received 1–8 injections (mean, 3.0 injections) for the whole course of treatment. The total dose of pingyangmycin administered was 8–64 mg (mean, 24 mg). Results Fifteen patients had complete response with no cosmetic or functional problems. Three patients with macroglossia had a reduction of 50–90% in the lesion size and needed secondary surgery. No serious complications were encountered. Conclusion The results suggested that intralesional injection of pingyangmycin is an effective and safe treatment for microcystic LMs in the tongue, and can be used as the first-line treatment protocol.
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587
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Jiang L, Xu C, Yu S, Liu P, Luo D, Zhou Q, Gao C, Hu H. A critical role of thrombin/PAR-1 in ADP-induced platelet secretion and the second wave of aggregation. J Thromb Haemost 2013; 11:930-40. [PMID: 23406164 DOI: 10.1111/jth.12168] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/28/2012] [Accepted: 02/03/2013] [Indexed: 01/08/2023]
Abstract
BACKGROUND The stable or second wave of platelet aggregation often observed in ADP-stimulated platelet-rich plasma (PRP) with an artificially lowered extracellular calcium level has been attributed to enhanced thromboxane A2 (TXA2 ) generation and inhibition of ectonucleotidase activity. However, the role of thrombin in ADP-induced platelet secretion and the second wave of aggregation is unknown. OBJECTIVES AND METHODS We employed aggregometry, flow cytometry, immunoblotting and ELISA to determine whether and how thrombin participates in ADP-induced platelet secretion and the second wave of aggregation. RESULTS ADP induces a phosphoinositide 3-kinase (PI3K) pathway-dependent thrombin generation, presumably resulting from the cleavage of αII b β3 -associated prothrombin. Generated thrombin subsequently activates protease-activated receptor-1 (PAR-1) and mediates dense granule secretion and the second wave of platelet aggregation in ADP-stimulated citrated PRP. Thus, ADP-induced dense granule secretion and the second wave of platelet aggregation in PRP were similarly and non-additively blocked by thrombin inhibitor hirudin, PAR-1 antagonist SCH-79797 or PI3K inhibitor wortmannin. Moreover, ADP stimulation caused the dissociation of prothrombin from αII b β3 and an increased plasma thrombin level; both were prevented by wortmannin. Furthermore, the wortmannin-inhibited second wave of platelet aggregation by ADP was restored by a subaggregation concentration of PAR-1 activating peptide SFLLRN. Blocking TXA2 production with indomethacin or restoring extracellular calcium to physiological concentration did not influence this thrombin/PAR-1 dependence. CONCLUSIONS A PI3K-dependent thrombin generation and the resultant PAR-1 activation serve as an indispensable mechanism to relay the platelet activation process induced by ADP.
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588
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Xu Z, Peng F, Yu Z, Zuo Y, Chen Y, Wang J, Hu X, Zhou Q, Bao Y, Chen M. 32P PIGMENT EPITHELIUM-DERIVED FACTOR ENHANCES TUMOR RESPONSE TO RADIATION BY NORMALIZING VASCULATURE IN A XENOGRAFTED MODEL OF LUNG CANCER. Lung Cancer 2013. [DOI: 10.1016/s0169-5002(13)70253-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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589
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Sandborn WJ, Colombel JF, D'Haens G, Plevy SE, Panés J, Robinson AM, Pollack PF, Zhou Q, Castillo M, Thakkar RB. Association of baseline C-reactive protein and prior anti-tumor necrosis factor therapy with need for weekly dosing during maintenance therapy with adalimumab in patients with moderate to severe Crohn's disease. Curr Med Res Opin 2013; 29:483-93. [PMID: 23438483 DOI: 10.1185/03007995.2013.779575] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
OBJECTIVE A post hoc analysis of data from the adalimumab Crohn's disease (CD) maintenance trial (CHARM, NCT00077779), examining the relationship between adalimumab dosing and maintenance of remission and response in subgroups stratified by previous anti-TNF use and baseline CRP. METHODS All patients received open-label induction (adalimumab: 80 mg, week [wk] 0; 40 mg, wk 2). At wk 4, all patients were randomized to double-blind maintenance adalimumab (40 mg weekly or every other week [eow]) or placebo for 52 weeks. In this analysis, clinical remission (CDAI <150) and clinical response (CR-100) at wk 26 and wk 56 by baseline CRP (high: ≥ 10 mg/L, or low: <10 mg/L) and prior anti-TNF use were determined for patients with CR-70 at wk 4. RESULTS Of 498 patients in this analysis, 260 (52.2%) were anti-TNF-naïve. For anti-TNF-naïve patients, the wk 56 remission rates in the adalimumab groups were significantly greater than placebo (P < 0.05) for both high and low CRP cohorts, with no statistically significant differences between remission rates with eow and weekly dosing within each CRP cohort (high: 52.8% eow, 53.5% weekly; low: 34.7% eow, 41.9% weekly). For anti-TNF-exposed patients, wk 56 remission rates were higher than placebo with both eow and weekly dosing within each cohort; weekly dosing in the high CRP cohort and eow dosing in the low CRP cohort achieved statistical significance (P < 0.05). In the high CRP cohort, remission rate with weekly dosing (46.9%) was statistically significantly greater compared with eow dosing (22.5%). There were no significant differences between eow (23.1%) and weekly (37.0%) dosing in the low CRP group. For all subgroups, clinical remission (wk 26) and clinical response (wk 26 and wk 56) patterns were similar to those observed for wk 56 remission. CONCLUSIONS These subgroup analyses suggest that in patients with moderately to severely active CD, weekly dosing may be most effective in the anti-TNF-experienced patients with elevated CRP at baseline.
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590
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Molloy DW, Standish TI, Zhou Q, Guyatt G. A multicenter, blinded, randomized, factorial controlled trial of doxycycline and rifampin for treatment of Alzheimer's disease: the DARAD trial. Int J Geriatr Psychiatry 2013; 28:463-70. [PMID: 22718435 DOI: 10.1002/gps.3846] [Citation(s) in RCA: 90] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/07/2011] [Accepted: 05/14/2012] [Indexed: 11/06/2022]
Abstract
OBJECTIVES Preliminary evidence suggested that doxycycline and rifampin might stop or slow the progression of Alzheimer's disease (AD). We carried out a randomized trial to confirm or refute these findings. METHODS A multicenter, blinded, randomized, 2 × 2 factorial controlled trial, set at 14 geriatric outpatient clinics in Canada. Four hundred and six patients with mild to moderate AD (standardized mini mental state examination (SMMSE) score 14-26) participated. The intervention was 12 months' treatment with doxycycline 100 mg twice daily + rifampin 300 mg daily or doxycycline 100 mg twice daily + placebo-rifampin daily or rifampin 300 mg daily + placebo-doxycycline twice daily or placebo-doxycycline twice daily + placebo-rifampin daily. Coprimary outcomes were the Standardized Alzheimer's Disease Assessment Scale-Cognitive Subscale (SADAS-cog) and the Clinical Dementia Rating Scale-Sum of the Boxes (CDR-SB). Secondary outcomes were the SMMSE, Quick mild cognitive impairment screen, Geriatric Depression Scale, Cornell Scale for Depression in Dementia, activities of daily living (Lawton Scale), and the Dysfunctional Behavior Rating Instrument frequency and reaction subscales. RESULTS There was a significant deterioration in SADAS-cog over time with both rifampin and doxycycline in comparison with placebo. When the two were used together, there was no statistically significant decline/deterioration in comparison with placebo (n = 305). For the CDR-SB, there were no significant effects of either rifampin or doxycycline. Secondary outcome results followed similar patterns. CONCLUSION Twelve months' treatment with doxycycline or rifampin, alone or in combination, has no beneficial effects on cognition or function in AD.
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591
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Zhou Q, Henoumont C, Vander Elst L, Laurent S, Muller RN. Fluorometry, a fast screening technique for non-covalent binding of contrast agents to human serum albumin? CONTRAST MEDIA & MOLECULAR IMAGING 2013; 8:361-5. [DOI: 10.1002/cmmi.1531] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2012] [Revised: 12/09/2012] [Accepted: 01/04/2013] [Indexed: 11/09/2022]
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592
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Zhu LL, Zhou Q. Therapeutic concerns when oral medications are administered nasogastrically. J Clin Pharm Ther 2013; 38:272-6. [PMID: 23600913 DOI: 10.1111/jcpt.12041edit] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2012] [Revised: 11/13/2012] [Accepted: 12/06/2012] [Indexed: 11/28/2022]
Abstract
WHAT IS KNOWN AND OBJECTIVE Administering oral medications to patients with nasogastric tube (NGT) is a challenging patient-care issue. Inappropriate prescribing behaviour and incorrect procedure for extemporaneous preparation of oral suspensions given via NGT may result in significant harm to patients. There are many drugs which have not been tested regarding oral absorption profile and bioavailability derived from NGT dosing. Although several studies and case-reports have been reported, there is no up-to-date review of drug administration via NGT. The aim of this review is to increase awareness of rational drug administration via NGT and to encourage relevant research in this area. METHODS Full prescribing information from each currently available oral medication was reviewed for any data indicating that the medication could not be crushed or opened. Literature was identified by searching PubMed (1988 to Aug 2012). RESULTS AND DISCUSSION There is evidence to show that NGT dosing of some medications may bring both benefits (e.g. cost saving) and disadvantages (e.g. decrease in efficacy and/or safety). For medications with package inserts that warn that they should not be crushed or opened, alternatives are usually recommended. However, in some cases, there is evidence to support NGT dosing. Sometimes special procedures are required to avoid problems such as instability, interaction with enteral nutrition, adsorption, tube obstruction and low recovery when preparing extemporaneous oral suspensions. WHAT IS NEW AND CONCLUSION Physicians, pharmacists and nurses should know the procedures for drug administration by NGT, as well as the latest evidence on such administrations. There may not be bioequivalence between oral and nasogastric administrations. Care must be taken to avoid compromising the physicochemical, biopharmaceutical and pharmacological properties of drugs given by NGT to ensure their safety and efficacy.
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593
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An T, Zhang Y, Huang Y, Zhang R, Yin S, Guo X, Wang Y, Zou C, Wei B, Lv R, Zhou Q, Zhang J. Neuregulin-1 protects against doxorubicin-induced apoptosis in cardiomyocytes through an Akt-dependent pathway. Physiol Res 2013; 62:379-85. [PMID: 23590603 DOI: 10.33549/physiolres.932516] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
In previous studies, it has been shown that recombinant human neuregulin-1(rhNRG-1) is capable of improving the survival rate in animal models of doxorubicin (DOX)-induced cardiomyopathy; however, the underlying mechanism of this phenomenon remains unknown. In this study, the role of rhNRG-1 in attenuating doxorubicin-induce apoptosis is confirmed. Neonatal rat ventricular myocytes (NRVMs) were subjected to various treatments, in order to both induce apoptosis and determine the effects of rhNRG-1 on the process. Activation of apoptosis was determined by observing increases in the protein levels of classic apoptosis markers (including cleaved caspase-3, cytochrome c, Bcl-2, BAX and terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate nick-end labeling (TUNEL) staining). The activation of Akt was detected by means of western blot analysis. The study results showed that doxorubicin increased the number of TUNEL positive cells, as well as the protein levels of cleaved caspase-3 and cytochrome c, and reduced the ratio of Bcl-2/Bax. However, all of these effects were markedly antagonized by pretreament with rhNRG-1. It was then further demonstrated that the effects of rhNRG-1 could be blocked by the phosphoinositole-3-kinase inhibitor LY294002, indicating the involvement of the Akt process in mediating the process. RhNRG-1 is a potent inhibitor of doxorubicin-induced apoptosis, which acts through the PI3K-Akt pathway. RhNRG-1 is a novel therapeutic drug which may be effective in preventing further damage from occurring in DOX-induced damaged myocardium.
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594
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Zhang S, Qi Y, Zhang H, He W, Zhou Q, Gui S, Wang Y. Melatonin inhibits cell growth and migration, but promotes apoptosis in gastric cancer cell line, SGC7901. Biotech Histochem 2013; 88:281-9. [PMID: 23477595 DOI: 10.3109/10520295.2013.769633] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
The pineal hormone, melatonin (MLT), has been shown to have therapeutic effects in patients with gastric cancer; however, the mechanisms for the anti-cancer effects are unknown. We investigated the effects of melatonin on cell proliferation, apoptosis, colony formation and cell migration in the gastric adenocarcinoma cell line, SGC7901, using MTT assay, Hoechst 33258 staining, flow cytometry, western blot, caspase-3 activity assay, soft agar colony formation assay, and scratch-wound assay. Our results showed that melatonin could inhibit cell proliferation, colony formation and migration efficiency, and it promoted apoptosis of SGC7901 cells. Our findings suggest that the anti-cancer effects of melatonin may be due to both inhibition of tumor cell proliferation and reduction of the metastatic potential of tumor cells.
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595
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Yang J, Zhang X, Su J, Xu C, Zhou Q, Tian H, Xie Z, Chen H, Huang Y, Jiang B, Wang Z, Wang B, Yang X, Zhong W, Nie Q, Liao R, Wu Y. AOSOP7 PULMONARY ADENOCARCINOMAS HARBOURING CONCOMITANT EGFR MUTATIONS AND ALK REARRANGEMENTS: DIVERSE RESPONSES TO EGFR-TKI AND CRIZOTINIB AND THE PREDICTIVE ROLE OF RECEPTOR TYROSINE KINASE PHOSPHORYLATION. Eur J Cancer 2013. [DOI: 10.1016/s0959-8049(13)70007-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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596
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Dong Y, Nie Y, Zhou Q. Highly Efficient Oxidative Desulfurization of Fuels by Lewis Acidic Ionic Liquids Based on Iron Chloride. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201200570] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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597
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Li X, Zhou Q, Yang WB, Xiong XZ, Du RH, Zhang JC. Pleural mesothelial cells promote expansion of IL-17-producing CD8+ T cells in tuberculous pleural effusion. J Clin Immunol 2013; 33:775-87. [PMID: 23299924 DOI: 10.1007/s10875-012-9860-3] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2012] [Accepted: 12/26/2012] [Indexed: 11/30/2022]
Abstract
IL-17-producing CD8(+) T lymphocytes (Tc17 cells) have recently been detected in many cancers and autoimmune diseases. However, the possible implication of Tc17 cells in tuberculous pleural effusion remains unclarified. In this study, distribution and phenotypic features of Tc17 cells in both tuberculous pleural effusion (TPE) and peripheral blood from patients with tuberculosis were determined. The effects of proinflammatory cytokines and local accessory cells (pleural mesothelial cells) on Tc17 cell expansion were also explored. We found that TPE contained more Tc17 cells than the blood. Compared with IFN-γ-producing CD8(+) T cells, Tc17 cells displayed higher expression of chemokine receptors (CCRs) and lower expression of cytotoxic molecules. In particularly, Tc17 cells in TPE exhibited high expression levels of CCR6, which could migrate in response to CCL20. Furthermore, IL-1β, IL-6, IL-23, or their various combinations could promote Tc17 cell expansion from CD8(+) T cells, whereas the proliferative response of Tc17 cells to above cytokines was lower than that of Th17 cells. Pleural mesothelial cells (PMCs) were able to stimulate Tc17 cell expansion via cell contact in an IL-1β/IL-6/IL-23 independent fashion. Thus this study demonstrates that Tc17 cells marks a subset of non-cytotoxic, CCR6(+) CD8(+) T lymphocytes with low proliferative capacity. The overrepresentation of Tc17 cells in TPE may be due to Tc17 cell expansion stimulated by pleural proinflammatory cytokines and to recruitment of Tc17 cells from peripheral blood. Additionally, PMCs may promote the production of IL-17 by CD8(+) T cells at sites of TPE via cell-cell interactions.
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598
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Yu Q, Zhou Q, Wei Q, Li J, Feng C, Mao X. SEMG1 may be the candidate gene for idiopathic asthenozoospermia. Andrologia 2013; 46:158-66. [PMID: 23289976 DOI: 10.1111/and.12064] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/31/2012] [Indexed: 12/12/2022] Open
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599
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Zhang S, Su X, Liu Y, Hao J, Zhang J, Cheng N, Zhou Q. [The relationship between histological classification of lung cancer and protein tyrosine phosphatase]. ZHONGGUO FEI AI ZA ZHI = CHINESE JOURNAL OF LUNG CANCER 2013; 4:66-9. [PMID: 21040643 DOI: 10.3779/j.issn.1009-3419.2001.01.18] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
BACKGROUND To investigate the relationship between histological classification of lung cancer and protein tyrosine phosphatase. METHODS The expression of protein tyrosine phosphatase in bronchial epithelia from 34 patients with benign pulmonary lesions and 121 patients with primary pulmonary carcinoma was examined by immunohistochemical staining method. RESULTS The positive rate of protein tyrosine phosphatase expression was 95.03%±2.10% in 34 patients with benign pulmonary lesions, 43.59%±14.41% in 121 patients with primary pulmonary carcinoma; 47.57%±16.26% in 46 patients with adenocarcinoma, 40.59%±14.04% in 48 patients with squamous cell carcinoma, 42.13%±9.84% in 27 patients with adenosquamous carcinoma; 31.63%±10.34% in 21 patients with poor differentiated squamous cell carcinoma, 41.39%±9.35% in 18 patients with intermediate differentiated squamous cell carcinoma, 59.90%±8.61% in 9 patients with well differentiated squamous cell carcinoma; 34.14%±12.53% in 16 patients with poor differentiated adenocarcinoma, 52.10%±12.19% in 26 patients with intermediate differentiated adenocarcinoma, and 63.05%±15.84% in 4 patients with well differentiated adenocarcinoma. A significant difference of protein tyrosine phosphatase positive expression was observed between benign pulmonary lesions and primary pulmonary carcinomas, and between poor differentiated primary pulmonary carcinomas and well differentiated primary pulmonary carcinomas (P<0.01 or P<0.05). CONCLUSIONS Detection of protein tyrosine phosphatase may be helpful to differentiate pulmonary lesions from lung cancer and be regarded as one of the indices in predicting the prognosis of patients with primary pulmonary carcinomas.
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Ji W, Li ZQ, Zhou Q, Yao WK, Wang YJ. Breeding new seedless grape by means of in vitro embryo rescue. GENETICS AND MOLECULAR RESEARCH 2013; 12:859-69. [DOI: 10.4238/2013.march.26.1] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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