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Tang L, Qiu LQ, Yau KKW, Hui YV, Binns CW, Lee AH. RECENT TRENDS IN GENDER RATIO AT BIRTH IN HANGZHOU, CHINA. TAP CHI Y TE CONG CONG 2015; 3:39-43. [PMID: 27547264 PMCID: PMC4991638] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
INTRODUCTION Higher than normal sex ratios at birth in China have been reported since the early 1980's. This study aimed to investigate recent trends in sex ratio at birth in Hangzhou, capital of Zhejiang Province in southeast China. METHODS Information on selected maternal and birth-related characteristics was extracted from the Hangzhou Birth Information Database for all pregnant women who delivered live births during 2005-2014. The sex ratios at birth were calculated after excluding infants with missing data on gender and those born with ambiguous genitalia. RESULTS A total of 478,192 male births and 430,852 female births were recorded giving an overall ratio of 111.0. The sex ratio at birth was almost constant at around 110.7 during the period 2005-2008, followed by an increase to the peak at 113.1 in 2010 and then declined back to 109.6 in 2014. CONCLUSION The gender ratio at birth in Hangzhou remained unbalanced for the past decade.
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Jiang H, Acharya C, An G, Zhong M, Feng X, Wang L, Dasilva N, Song Z, Yang G, Adrian F, Qiu L, Richardson P, Munshi NC, Tai YT, Anderson KC. SAR650984 directly induces multiple myeloma cell death via lysosomal-associated and apoptotic pathways, which is further enhanced by pomalidomide. Leukemia 2015; 30:399-408. [PMID: 26338273 DOI: 10.1038/leu.2015.240] [Citation(s) in RCA: 168] [Impact Index Per Article: 18.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2015] [Revised: 08/20/2015] [Accepted: 08/21/2015] [Indexed: 12/22/2022]
Abstract
The anti-CD38 monoclonal antibody SAR650984 (SAR) is showing promising clinical activity in treatment of relapsed and refractory multiple myeloma (MM). Besides effector-mediated antibody-dependent cellular cytotoxicity and complement-mediated cytotoxicity, we here define molecular mechanisms of SAR-directed MM cell death and enhanced anti-MM activity triggered by SAR with Pomalidomide (Pom). Without Fc-cross-linking agents or effector cells, SAR specifically induces homotypic aggregation (HA)-associated cell death in MM cells dependent on the level of cell surface CD38 expression, actin cytoskeleton and membrane lipid raft. SAR and its F(ab)'2 fragments trigger caspase 3/7-dependent apoptosis in MM cells highly expressing CD38, even with p53 mutation. Importantly, SAR specifically induces lysosome-dependent cell death (LCD) by enlarging lysosomes and increasing lysosomal membrane permeabilization associated with leakage of cathepsin B and LAMP-1, regardless of the presence of interleukin-6 or bone marrow stromal cells. Conversely, the lysosomal vacuolar H+-ATPase inhibitor blocks SAR-induced LCD. SAR further upregulates reactive oxygen species. Pom enhances SAR-induced direct and indirect killing even in MM cells resistant to Pom/Len. Taken together, SAR is the first therapeutic monoclonal antibody mediating direct cytotoxicity against MM cells via multiple mechanisms of action. Our data show that Pom augments both direct and effector cell-mediated MM cytotoxicity of SAR, providing the framework for combination clinical trials.
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Deng L, Xu-Monette ZY, Loghavi S, Manyam GC, Xia Y, Visco C, Huh J, Zhang L, Zhai Q, Wang Y, Qiu L, Dybkær K, Chiu A, Perry AM, Zhang S, Tzankov A, Rao H, Abramson J, Sohani AR, Xu M, Hsi ED, Zhu J, Ponzoni M, Wang S, Li L, Zhang M, Ferreri AJM, Parsons BM, Li Y, Piris MA, Medeiros LJ, Young KH. Primary testicular diffuse large B-cell lymphoma displays distinct clinical and biological features for treatment failure in rituximab era: a report from the International PTL Consortium. Leukemia 2015; 30:361-72. [DOI: 10.1038/leu.2015.237] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Revised: 08/15/2015] [Accepted: 08/18/2015] [Indexed: 12/15/2022]
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Linscheid C, Heitmann E, Singh P, Wickstrom E, Qiu L, Hodes H, Nauser T, Petroff MG. Trophoblast expression of the minor histocompatibility antigen HA-1 is regulated by oxygen and is increased in placentas from preeclamptic women. Placenta 2015; 36:832-8. [PMID: 26095815 DOI: 10.1016/j.placenta.2015.05.018] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/01/2014] [Revised: 05/25/2015] [Accepted: 05/28/2015] [Indexed: 01/27/2023]
Abstract
INTRODUCTION Maternal T-cells reactive towards paternally inherited fetal minor histocompatibility antigens are expanded during pregnancy. Placental trophoblast cells express at least four fetal antigens, including human minor histocompatibility antigen 1 (HA-1). We investigated oxygen as a potential regulator of HA-1 and whether HA-1 expression is altered in preeclamptic placentas. METHODS Expression and regulation of HA-1 mRNA and protein were examined by qRT-PCR and immunohistochemistry, using first, second, and third trimester placentas, first trimester placental explant cultures, and term purified cytotrophoblast cells. Low oxygen conditions were achieved by varying ambient oxygen, and were mimicked using cobalt chloride. HA-1 mRNA and protein expression levels were evaluated in preeclamptic and control placentas. RESULTS HA-1 protein expression was higher in the syncytiotrophoblast of first trimester as compared to second trimester and term placentas (P<0.01). HA-1 mRNA was increased in cobalt chloride-treated placental explants and purified cytotrophoblast cells (P = 0.04 and P<0.01, respectively) and in purified cytotrophoblast cells cultured under 2% as compared to 8% and 21% oxygen (P<0.01). HA-1 mRNA expression in preeclamptic vs. control placentas was increased 3.3-fold (P = 0.015). HA-1 protein expression was increased in syncytial nuclear aggregates and the syncytiotrophoblast of preeclamptic vs. control placentas (P = 0.02 and 0.03, respectively). DISCUSSION Placental HA-1 expression is regulated by oxygen and is increased in the syncytial nuclear aggregates and syncytiotrophoblast of preeclamptic as compared to control placentas. Increased HA-1 expression, combined with increased preeclamptic syncytiotrophoblast deportation, provides a novel potential mechanism for exposure of the maternal immune system to increased fetal antigenic load during preeclampsia.
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Yu Y, Qiu L, Guo J, Yang D, Qu L, Yu J, Zhan F, Xue M, Zhong M. TRIB3 mediates the expression of Wnt5a and activation of nuclear factor-κB in Porphyromonas endodontalis lipopolysaccharide-treated osteoblasts. Mol Oral Microbiol 2015; 30:295-306. [PMID: 25601649 DOI: 10.1111/omi.12094] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 01/13/2015] [Indexed: 12/25/2022]
Abstract
Porphyromonas endodontalis lipopolysaccharide (LPS) is considered to be correlated with the progression of bone resorption in periodontal and periapical diseases. Wnt5a has recently been implicated in inflammatory processes, but its role is unclear as a P. endodontalis LPS-induced mediator in osteoblasts. Tribbles homolog 3 (TRIB3) encodes a pseudokinase and has been linked to inflammation in certain situations. Here, we found that P. endodontalis LPS induced Wnt5a expression in a dose- and time-dependent manner and it also upregulated translocation, phosphorylation and transcriptional activity of nuclear factor-κB (NF-κB) in MC3T3-E1 cells. Bay 11-7082 blocked the translocation of NF-κB and Wnt5a expression induced by P. endodontalis LPS. Chromatin immunoprecipitation assay further established that induction of Wnt5a by P. endodontalis LPS was mediated through the NF-κB p65 subunit. Additionally, P. endodontalis LPS increased expression of TRIB3 in osteoblasts after 10 h simulated time. Overexpression of TRIB3 enhanced NF-κB phosphorylation and Wnt5a induction, whereas knockdown of TRIB3 inhibited NF-κB phosphorylation and Wnt5a expression in P. endodontalis LPS-stimulated osteoblasts. These results suggest that P. endodontalis LPS has the ability to promote the expression of Wnt5a in mouse osteoblasts, and this induction is mainly mediated by NF-κB pathway. TRIB3 seems to modulate the sustained expression of Wnt5a in osteoblasts stimulated by P. endodontalis LPS, as well as regulating NF-κB phosphorylation.
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Wang J, Zhang F, shi Y, Bai Z, Qiu L, Li Y, Zhai R, Yang X. Radiofrequency hyperthermia (RFH)-enhanced herpes simplex virus-thymidine kinase (HSV-TK) gene therapy of hepatocellular carcinoma. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
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shi Y, Zhang F, Bai Z, Wang J, Qiu L, Yang X. Radiofrequency hyperthermia-enhanced local chemotherapy of esophageal squamous cancers. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.498] [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] Open
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Bai Z, Zhang F, shi Y, Qiu L, Wang J, Teng G, Yang X. Radiofrequency hyperthermia (RFH)-enhanced chemotherapy of pancreatic cancers monitored by dual-modality imaging. J Vasc Interv Radiol 2015. [DOI: 10.1016/j.jvir.2014.12.354] [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] Open
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Xu W, Bi Y, Sun Z, Li J, Guo L, Yang T, Wu G, Shi L, Feng Z, Qiu L, Li Q, Guo X, Luo Z, Lu J, Shan Z, Yang W, Ji Q, Yan L, Li H, Yu X, Li S, Zhou Z, Lv X, Liang Z, Lin S, Zeng L, Yan J, Ji L, Weng J. Comparison of the effects on glycaemic control and β-cell function in newly diagnosed type 2 diabetes patients of treatment with exenatide, insulin or pioglitazone: a multicentre randomized parallel-group trial (the CONFIDENCE study). J Intern Med 2015; 277:137-50. [PMID: 25039675 DOI: 10.1111/joim.12293] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
OBJECTIVE Progressive β-cell dysfunction hinders the maintenance of glycaemic control in type 2 diabetes, but comparative data on β-cell-protective therapies are lacking in the early stage of type 2 diabetes. Here we evaluated the comparative glycaemic efficacy and impact on β-cell function of three antihyperglycaemic agents that have a β-cell-protective effect, exenatide, insulin and pioglitazone, in newly diagnosed patients with type 2 diabetes. DESIGN AND METHODS In this 48-week, multicentre, parallel-group study, 416 patients newly diagnosed with type 2 diabetes were randomly assigned 1 : 1 : 1 to receive exenatide, insulin or pioglitazone. The primary end-point was the change in glycosylated haemoglobin (HbA1c) from baseline. Secondary end-points included effects on weight, blood pressure, lipid profiles and β-cell function assessed by homeostasis model assessment, fasting proinsulin:insulin (PI/I), disposition index (DI) and acute insulin response (AIR). RESULTS At week 48, mean [95% confidence interval (CI)] HbA1c changes from baseline were -1.8% (-1.55% to -2.05%) with exenatide, -1.7% (-1.52% to -1.96%) with insulin and -1.5% (-1.23% to -1.71%) with pioglitazone. Treatment differences were -0.20% (95% CI -0.46% to 0.06%) for exenatide versus insulin (P = 0.185), and -0.37% (95% CI -0.63% to -0.12%) for exenatide versus pioglitazone (P = 0.002). Significant improvements from baseline in AIR, PI/I and DI were observed with all treatments, with the greatest improvements in DI, as well as weight, blood pressure and lipid profile, observed with exenatide. CONCLUSIONS All three agents showed efficacy regarding glycaemic control and metabolic benefits; however, exenatide showed the greatest efficacy. β-cell function improved in all treatment groups; hence, early initiation of β-cell-protective therapy may halt the decline in β-cell function in type 2 diabetes.
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Mao J, Guo H, Si N, Qiu L, Guo L, Sun Z, Xiang Y, Yang X, Zhao W, Zhang W. Regulating effect of MMP-9 and TIMP-1 in pituitary adenoma invasion. GENETICS AND MOLECULAR RESEARCH 2015; 14:17091-8. [DOI: 10.4238/2015.december.16.9] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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El-Shahawy MA, Rasmussen HS, Lavin PT, Yang A, Packham DK, Singh B, Rasmussen HS, Lavin PT, Yang A, Roger SD, Fusaro M, Dalle Carbonare L, Dusso A, Arcidiacono MV, Pasho S, Gallieni M, Ormanji MS, Korkes F, Meca R, Baia LC, Ferraz RR, Heilberg IP, Roger SD, Rasmussen HS, Lavin PT, Yang A, El-Shahawy MA, Nistor I, Bararu I, Apavaloaie MC, Voroneanu L, Donciu MD, Nagler EV, Covic A, Gil HW, Park SH, Hong SY, Ponte B, Alwan H, Pruijm M, Ackermann D, Guessous I, Ehret G, Paccaud F, Mohaupt M, Pechere-Bertschi A, Burnier M, Martin PY, Bochud M, Filiopoulos V, Biblaki D, Manolios N, Karatzas I, Arvanitis D, Vlassopoulos D, Altuntas A, Kidir V, Inal S, Diker S, Cil N, Orhan H, Sezer MT, Verdelho M, Rodrigues N, Ribeiro F, Roger SD, Rasmussen HS, Lavin PT, Yang A, Qunibi WY, Azar H, Ossman R, Flamant M, Chelala D, Ria P, Fabris A, Branco C, Gambaro G, Lupo A, Hao J, Qiu L, Li Y, Li R, Li X, Chen L, Verdesca S, Cucchiari D, Podesta M, Badalamenti S, Veldhuijzen NMH, Gerritsen KGF, Boer WH, Abrahams AC, Packham DK, Rasmussen HS, Lavin PT, Yang A, Qunibi WY, Mangione F, Albrizio P, Sepe V, Esposito P, Manini A, Muciaccia S, Dal Canton A. ACID BASE, ION DISORDERS, LITHISASIS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu150] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Guo J, Yang D, Okamura H, Teramachi J, Ochiai K, Qiu L, Haneji T. Calcium Hydroxide Suppresses Porphyromonas endodontalis Lipopolysaccharide–induced Bone Destruction. J Dent Res 2014; 93:508-13. [DOI: 10.1177/0022034514526886] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
Porphyromonas endodontalis and its main virulence factor, lipopolysaccharide (LPS), are associated with the development of periapical diseases and alveolar bone loss. Calcium hydroxide is commonly used for endodontic therapy. However, the effects of calcium hydroxide on the virulence of P. endodontalis LPS and the mechanism of P. endodontalis LPS–induced bone destruction are not clear. Calcium hydroxide rescued the P. endodontalis LPS–suppressed viability of MC3T3-E1 cells and activity of nuclear factor-κB (NF-κB) in these cells, resulting in the reduced expression of interleukin-6 and tumor necrosis factor-α. In addition, calcium hydroxide inhibited P. endodontalis LPS–induced osteoclastogenesis by decreasing the activities of NF-κB, p38, and ERK1/2 and the expression of nuclear factor of activated T-cell cytoplasmic 1 in RAW264.7 cells. Calcium hydroxide also rescued the P. endodontalis LPS–induced osteoclastogenesis and bone destruction in mouse calvaria. Taken together, our present results indicate that calcium hydroxide suppressed bone destruction by attenuating the virulence of P. endodontalis LPS on bone cells.
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Tang MC, Cheng L, Qiu L, Jia RG, Sun RQ, Wang XP, Hu GY, Zhao Y. Efficacy of Tiopronin in treatment of severe non-alcoholic fatty liver disease. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2014; 18:160-164. [PMID: 24488902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
BACKGROUND Nonalcoholic fatty liver disease (NAFLD) is a clinicopathologic syndrome of which the main feature is diffuse macrovesicular hepatic steatosis caused by deposition of excessive free fatty acid and triglyceride in liver parenchyma. AIM To observe the efficacy of Tiopronin in treatment of severe nonalcoholic fatty liver disease (NAFLD). PATIENTS AND METHODS 30 patients with severe NAFLD were treated with Tiopronin for 3 months. 30 healthy people were selected as control. The body mass index (BMI) and plasma levels of endotoxin (ET), leptin, IL-6 and IL-8 were measured before and after treatment. RESULTS The serum levels of ET, leptin, IL-6 and IL-8 in severe NAFLD group were significantly higher than those in control group (p < 0.05). After treatment with Tiopronin, these indexes were significantly lower than before (p < 0.05). CONCLUSIONS The intestinal endotoxemia (IETM) occurs in patients with severe NAFLD. Leptin, IL-6 and IL-8 play important roles in pathogenesis of NAFLD. Tiopronin can reduce the levels of ET, leptin, IL-6 and IL-8 for treatment of NAFLD.
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Zhang YB, Zhang Y, Wu W, Li S, Qiu L, Han J. The influences of maternal and neonatal factors on umbilical cord blood quality. Int J Lab Hematol 2013; 36:e47-9. [PMID: 24103161 DOI: 10.1111/ijlh.12152] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Yang X, Cheng C, Wang Y, Qiu L, Li D. Liquid-Mediated Dense Integration of Graphene Materials for Compact Capacitive Energy Storage. Science 2013; 341:534-7. [DOI: 10.1126/science.1239089] [Citation(s) in RCA: 1495] [Impact Index Per Article: 135.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Power A, Duncan N, Pusey C, Usvyat L, Marcelli D, Marelli C, Kotanko P, Li Z, Wang J, Yuan X, Wang J, Wang L, Ozkayar N, Altun B, Yildirim T, Yilmaz R, Dede F, Hayran M, Arici M, Aki T, Erdem Y, Vink EE, Siddiqi L, Verloop WL, van Schelven LJ, Liam Oey P, Blankestijn PJ, Vink EE, Verloop WL, Voslkuil M, Spiering W, Vonken EJ, Blankestijn PJ, Branco PQ, Gaspar AC, Sousa HS, Martins AR, Dores H, Goncalves P, Almeida M, Mendes M, Barata JD, Shi X, Xia P, Wen Y, Jiang L, Li H, Li X, Li X, Chen L, Quiroz YJ, Franco M, Tapia E, Bautista R, Pacheco U, Santamaria J, Johnson RJ, Rodriguez-Iturbe B, Suttorp MM, Hoekstra T, Dekker FW, Lin L, Zhang W, Yang J, He Y, Maciorkowska D, Zbroch E, Koc-Zorawska E, Malyszko JS, Mysliwiec MC, Malyszko J, Sala N, Navarro Diaz M, Serra A, Lopez D, Bonet J, Romero R, Qiu L, Li Y, Chen L, Zhu G, Schiller A, Bob F, Enache A, Jurca-Simina F, Mociar D, Bozdog G, Munteanu M, Petrica L, Velciov S, Bansal V, Timar R, Branco PQ, Gaspar AC, Sousa HS, Martins AR, Goncalves PA, Dores H, Mendes A, Mendes M, Barata JD, Calderon C, Lavilla FJ, Mora JM, Lopez D, Garcia-Fernandez N, Martin PL, Errasti P, David C, Ciocalteu A, Niculae A, Checherita AI, Otowa T, Yasuda T, Uehara K, Kawarazaki H, Shibagaki Y, Kimura K, Hasegawa H, Kanozawa K, Asakura J, Takayanagi K, Tayama Y, Okazaki S, Hara H, Kiba T, Mitani T, Iwanaga M, Ogawa T, Matsuda A, Mitarai T, Yilmaz Z, Yildirim T, Yilmaz R, Aybal-Kutlugun A, Altun B, Kucukozkan T, Erdem Y, Abbss SR, Zhu F, Flores-Gama C, Williams C, Podesta MA, Cartagena C, Carter M, Levin NW, Kotanko P, Gerasimovska Kitanovska B, Bogdanovska S, Severova Andreevska G, Gerasimovska V, Sikole A, Zafirovska K, Boubaker K, Kheder A, Kaaroud H, Lee SM, Park HE, Kim M, Heo NJ, Choi SY, Joo KW, Han JS, Shah S, Pandya B, Schiller A, Munteanu M, Enache A, Bob F, Jurca-Simina F, Mociar D, Timar R, Karanovic S, Fistrek Prlic M, Kos J, Premuzic V, Abramovic Baric M, Matijevic V, Fucek M, Vrdoljak A, Cvitkovic A, Leko N, Bitunjac M, Laganovic M, Jelakovic B, Antlanger M, Kovarik JJ, Domenig O, Kaltenecker C, Hecking M, Haidinger M, Werzowa J, Kopecky C, Heinzl H, Poglitsch M, Saemann MD, Bartmanska M, Wyskida K, Baba M, Tarski M, Adamczak M, Wiecek A, Szotowska M, Fistrek Prlic M, Karanovic S, Pecin I, Laganovic M, Vedran P, Vrdoljak A, Fucek M, Cvitkovic A, Bitunjac M, Abramovic Baric M, Matijevic V, Jelakovic B, Margulis F, Golglid V, Castro C, Ramallo S, Martinez M, Schiavelli R, Demikhova N, Prikhodko O, Vazquez Jimenez LC, Bancu IE, Troya Saborido MI, Bonet Sol J, Tasdemir M, Canpolat N, Caliskan S, Pehlivan G, Sever L, Sasaki K, Kimura T, Sakai S, Iwahashi E, Fujimoto T, Minami S, Oka T, Yokoyama K. Hypertension - human studies. Nephrol Dial Transplant 2013. [DOI: 10.1093/ndt/gft106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Wang Y, Qiu L, Dong J, Wang B, Shi Z, Liu B, Wang W, Zhang J, Cai S, Ye G, Cai X. Comparison of the pharmacokinetics of imipenem after intravenous and intrathecal administration in rabbits. EUROPEAN REVIEW FOR MEDICAL AND PHARMACOLOGICAL SCIENCES 2013; 17:711-719. [PMID: 23609353] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
BACKGROUND Intrathecal administration of antibiotics has potentially high effectiveness for the treatment for severe intracranial infections, particularly nosocomial meningitis. The use of intrathecal injection of antibiotics has been reported mostly in case reports. However, there is sparse data regarding the pharmacokinetics of antibiotics after intrathecal administration. AIM This study investigated whether intrathecal injection is an effective method for the administration of imipenem. MATERIALS AND METHODS The pharmacokinetics of imipenem after intrathecal and intravenous administration of 1:1 imipenem: cilastatin (IMI/CIL) to rabbits were compared. RESULTS The AUC0-t in the cerebrospinal fluid for intrathecal administration was approximately twice that of an equal dose of intravenous administration at doses of 0.35, 0.7, and 1.4 mg/kg. Brain concentrations of imipenem after intrathecal injection were three times greater than observed after intravenous injection and remained high for at least 8 hours post-injection. Elimination of imipenem after administration by either route was primarily via urine, but a transient surge of imipenem in bile and intestinal tissue was observed. CONCLUSIONS Results indicate that there is a clinical potential for intrathecally administered IMI/CIL. Further studies are warranted to investigate the potential for seizure and to assess the translatability of the rabbit model to human treatment.
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Li J, Lu X, Wu Q, Yu G, Xu Z, Qiu L, Pei Z, Lin Y, Pang J. Design, SAR, Angiogenic Activities Evaluation and Pro-Angiogenic Mechanism of New Marine Cyclopeptide Analogs. Curr Med Chem 2013; 20:1183-94. [DOI: 10.2174/0929867311320090007] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2012] [Revised: 11/30/2012] [Accepted: 12/20/2012] [Indexed: 11/22/2022]
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Zheng W, Feng X, Qiu L, Pan Z, Wang R, Lin S, Hou D, Jin L, Li Y. Identification of the antibiotic ionomycin as an unexpected peroxisome proliferator-activated receptor γ (PPARγ) ligand with a unique binding mode and effective glucose-lowering activity in a mouse model of diabetes. Diabetologia 2013. [PMID: 23178929 DOI: 10.1007/s00125-012-2777-9] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
AIMS/HYPOTHESIS Existing thiazolidinedione (TZD) drugs for diabetes have severe side effects. The aim of this study is to develop alternative peroxisome proliferator-activated receptor γ (PPARγ) ligands that retain the benefits in improving insulin resistance but with reduced side effects. METHODS We used AlphaScreen assay to screen for new PPARγ ligands from compound libraries. In vitro biochemical binding affinity assay and in vivo cell-based reporter assay were used to validate ionomycin as a partial ligand of PPARγ. A mouse model of diabetes was used to assess the effects of ionomycin in improving insulin sensitivity. Crystal structure of PPARγ complexed with ionomycin revealed the unique binding mode of ionomycin, which elucidated the molecular mechanisms allowing the discrimination of ionomycin from TZDs. RESULTS We found that the antibiotic ionomycin is a novel modulating ligand for PPARγ. Both the transactivation and binding activity of PPARγ by ionomycin can be blocked by PPARγ specific antagonist GW9662. Ionomycin interacts with the PPARγ ligand-binding domain in a unique binding mode with properties and epitopes distinct from those of TZD drugs. Ionomycin treatment effectively improved hyperglycaemia and insulin resistance, but had reduced side effects compared with TZDs in the mouse model of diabetes. In addition, ionomycin effectively blocked the phosphorylation of PPARγ at Ser273 by cyclin-dependent kinase 5 both in vitro and in vivo. CONCLUSIONS/INTERPRETATION Our studies suggest that ionomycin may represent a unique template for designing novel PPARγ ligands with advantages over current TZD drugs.
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Zhao M, Qiu L, Tao N, Zhang L, Wu X, She Q, Zeng F, Wang Y, Wei S, Wu X. HLA DRB allele polymorphisms and risk of cervical cancer associated with human papillomavirus infection: a population study in China. EUR J GYNAECOL ONCOL 2013; 34:54-59. [PMID: 23590002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
OBJECTIVE Persistent infection with high-risk human papillomavirus (HPV) is the main cause of cervical cancer. Environmental, behavioral, and ill-defined genetic factors have also been implicated in the pathogenesis of this disease. To determine whether human leukocyte antigen (HLA) DRB alleles are associated with cervical cancer and HPV infections in the Chinese population, HLA genotypes were examined in 69 cervical cancer patients and 201 controls. MATERIALS AND METHODS Polymorphisms in HLA-DRB genes were genotyped using oligoneucleotide arrays, and the magnitude of associations was determined by logistic regression analysis. RESULTS HLA-DRB1*13 (OR = 4.01 95% CI, 1.703-9.442) and HLA-DRB1*3(17) (OR = 2.661 95% CI, 1.267-5.558) were associated with an increased risk of cervical cancer, and DRB1*09012 (OR = 0.182, 95% CI, 0.079-0.418 and DRB1*1201 (OR = 0.35 95% CI, 0.142-0.863 were associated with a decreased risk. The risk associations of HPV infection were increased in women carrying the HLA-DRB1*09012 (OR = 1.924; 95% CI, 1.08 -3.427) and DRB3(52)*0101 (OR = 7.527 95% CI, 0.909-62.347) alleles. Among cervical cancer patients, the risk associations differed between HPV positive and negative cases for several alleles; increased risk of cervical cancer was associated with DRB3 (52)*02/03 (OR, 12.794; 95% CI, 5.007-32.691) and DRB1*3(17) (OR = 3.48; 95% CI, 1.261-9.604), and decreased risk was associated with DRB1*09012 and DRB5(51)*01/02. Furthermore, HPV16-containing cervical cancer cases differed from non-HPV16 subjects in their positive association with DRB1*1501 (OR = 4.173; 95% CI, 1.065-16.356) and DRB5(51)*0101/0201, and their negative association with DRB4(53)*0101 (OR = 0.329; 95% CI,0.122-0.888). CONCLUSIONS The present results provide further evidence that certain HLA class II allele polymorphisms are involved in the genetic susceptibility to cervical cancer and HPV infection in the Chinese population from an area with a high incidence of this neoplasia.
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Liu X, Cao J, Zhang J, Qiu L, Li W, Lv F, Wang L, Guo Y, Hong X, Li J. Treatment Outcome for Primary Mediastinal Large B-Cell Lymphoma: A Retrospective Analysis of 72 Cases. Ann Oncol 2012. [DOI: 10.1016/s0923-7534(20)32233-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
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Qiu L, Zhou X. M345 THE EFFECTS OF MIRNA-7 ON THE INVASION AND PROLIFERATION IN HUMAN OVARIAN CANCER CELL LINE HO-8910 AND HO-8910PM CELLS. Int J Gynaecol Obstet 2012. [DOI: 10.1016/s0020-7292(12)61536-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Qiu L, Low HP, Chang CI, Strohsnitter WC, Anderson M, Edmiston K, Adami HO, Ekbom A, Hall P, Lagiou P, Trichopoulos D, Hsieh CC. Novel measurements of mammary stem cells in human umbilical cord blood as prospective predictors of breast cancer susceptibility in later life. Ann Oncol 2012; 23:245-250. [PMID: 21515664 PMCID: PMC3276324 DOI: 10.1093/annonc/mdr153] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Accepted: 03/17/2011] [Indexed: 01/03/2023] Open
Abstract
BACKGROUND The size of the breast stem-cell pool could underlie the intrauterine roots of breast cancer. We studied whether breast stem cells exist in umbilical cord blood and if they correlate with hematopoietic stem-cell measurements that have been positively associated with perinatal risk factors for breast cancer. SUBJECTS AND METHODS We isolated mononuclear cells from umbilical cord blood of 170 singleton full-term pregnancies and determined, by reverse transcription polymerase chain reaction, the presence of genes of putative breast epithelial stem-cell/progenitor markers [including epithelial cell adhesion molecule (EpCAM), CD49f (α6-integrin), CD117 (c-kit receptor), CD24, and CD29 (β1-integrin)]. By immunocytochemistry, we colocalized protein expressions of EpCAM+CD49f+, CD49f+CD24+, and CD24+CD29+. We correlated concentrations of putative breast stem-cell/progenitor subpopulations, quantified by flow cytometry, with concentrations of hematopoietic stem cells. RESULTS Mammary stem-cell phenotypes were identified in umbilical cord blood. The measured EpCAM+ subpopulation was positively correlated with concentrations of CD34+ and CD34+CD38- hematopoietic stem cells (both P=0.006). Additionally, EpCAM+CD49f+ and CD49f+CD24+ subpopulations were positively correlated to the CD34+ cells (P=0.03 and 0.008, respectively). CONCLUSION The positive association between measurable breast and hematopoietic stem cells in human umbilical cord blood suggests plausible mechanisms for a prenatal influence on breast cancer risk.
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Zhu M, Tang A, Amatya N, Qiu L. Exudative retinal detachment. Neth J Med 2011; 69:527-530. [PMID: 22173366] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
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Qiu L, Zhang L, Wang L, Jiang Y, Luo Y, Peng Y, Lin L. Ultrasound-targeted microbubble destruction enhances naked plasmid DNA transfection in rabbit Achilles tendons in vivo. Gene Ther 2011; 19:703-10. [DOI: 10.1038/gt.2011.165] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
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