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Law DKS, Lefebvre B, Gilca R, Deng S, Zhou J, De Wals P, Tsang RSW. Characterization of invasive Neisseria meningitidis strains from Québec, Canada, during a period of increased serogroup B disease, 2009-2013: phenotyping and genotyping with special emphasis on the non-carbohydrate protein vaccine targets. BMC Microbiol 2015; 15:143. [PMID: 26204985 PMCID: PMC4514445 DOI: 10.1186/s12866-015-0469-6] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2015] [Accepted: 06/19/2015] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND The epidemiology of invasive meningococcal disease (IMD) in Québec, Canada, has been dominated in the past decade by a clone of serogroup B (MenB) Neisseria meningitidis defined by multi-locus sequence typing (MLST) as sequence type (ST)-269. With the licensure of a new MenB vaccine Bexsero (4CMenB) in Canada, this study characterized invasive N. meningitidis recovered in Québec from 2009 to 2013, with an objective to examine the diversity of the 4CMenB vaccine antigens. Isolates were serogrouped by antisera and genogrouped by PCR, and further typed by whole cell ELISA for serotype and serosubtype antigens. Clonal analysis was done by MLST. Isolates were genotyped by analysis of their 4CMenB vaccine antigen genes of PorA, factor H binding protein (fHbp), Neisserial Heparin Binding Antigen (NHBA), and Neisseria Adhesin A (NadA). RESULTS Of the 263 IMD isolates analysed, 229, 16, 10, 7, and 1 belonged to MenB, MenY, MenW, MenC, and MenX, respectively. Of the 229 MenB, 159 (69.4 %) were typed as ST-269 clonal complex (CC); and they possessed a restricted number of three fHbp and five nhba gene alleles. Nine N. meningitidis isolates (eight MenB and one MenY) were found to possess at least one gene that encoded for an antigen that matched exactly with protein variants in the 4CMenB vaccine. Two MenB expressed PorA antigen P1.4 and possessed the nhba gene for peptide 2; four other MenB were predicted to have NHBA peptide 2; another two MenB were predicted to encode fHbp peptide 1.1; and a single MenY was found to have nadA gene for NadA peptide 8. In addition, another 172 isolates were found to possess genes for variant 1 fHbp peptides other than peptide 1.1 or NadA variant 1-2/3 peptides other than peptide 8; and therefore, may potentially be covered by 4CMenB. CONCLUSION The most prevalent clone of N. meningitidis in Quebec was ST-269 CC; and 96 % of the isolates in this CC were predicted to be covered by 4CMenB vaccine. Extensive genetic diversity was found in the other IMD isolates in Québec which might suggest a lower coverage by the vaccine when compared to the ST-269 MenB.
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Huang C, Wang J, Deng S, She Q, Wu L. The effects of aerobic endurance exercise on pulse wave velocity and intima media thickness in adults: A systematic review and meta-analysis. Scand J Med Sci Sports 2015; 26:478-87. [PMID: 26059748 DOI: 10.1111/sms.12495] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 04/25/2015] [Indexed: 11/29/2022]
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Selvaratnam T, Pegallapati AK, Reddy H, Kanapathipillai N, Nirmalakhandan N, Deng S, Lammers PJ. Algal biofuels from urban wastewaters: maximizing biomass yield using nutrients recycled from hydrothermal processing of biomass. BIORESOURCE TECHNOLOGY 2015; 182:232-238. [PMID: 25704095 DOI: 10.1016/j.biortech.2015.01.134] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/10/2014] [Revised: 01/30/2015] [Accepted: 01/31/2015] [Indexed: 06/04/2023]
Abstract
Recent studies have proposed algal cultivation in urban wastewaters for the dual purpose of waste treatment and bioenergy production from the resulting biomass. This study proposes an enhancement to this approach that integrates cultivation of an acidophilic strain, Galdieria sulphuraria 5587.1, in a closed photobioreactor (PBR); hydrothermal liquefaction (HTL) of the wet algal biomass; and recirculation of the nutrient-rich aqueous product (AP) of HTL to the PBR to achieve higher biomass productivity than that could be achieved with raw wastewater. The premise is that recycling nutrients in the AP can maintain optimal C, N and P levels in the PBR to maximize biomass growth to increase energy returns. Growth studies on the test species validated growth on AP derived from HTL at temperatures from 180 to 300°C. Doubling N and P concentrations over normal levels in wastewater resulted in biomass productivity gains of 20-25% while N and P removal rates also doubled.
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Zhang HG, Liu XY, Hou Y, Chen S, Deng S, Liu RZ. Reproductive outcome of a case with familial balanced translocation t(3;6): implications for genetic counseling. GENETICS AND MOLECULAR RESEARCH 2015; 14:2809-15. [PMID: 25867430 DOI: 10.4238/2015.march.31.11] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Although it is known that parental carriers of structural chromosomal rearrangements are associated with recurrent pregnancy loss, subsequent natural pregnancies remain possible. We examined the reproductive outcome of a familial balanced translocation with t(3;6)(q12;q27). Karyotyping of the proband revealed 46,XY chromosomes with the balanced translocation t(3;6). The first 2 pregnancies resulted in spontaneous abortions. Based on the proband karyotype, his father and half-brother were subjected to cytogenetic analysis, and both showed 46,XY, t(3;6)(q12;q27). After genetic counseling, the proband chose to continue the pregnancy. During the third pregnancy, the subject gave birth to a normal male infant. For parental carriers with balanced chromosomal translocations, natural pregnancy should be considered during genetic counseling.
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Deng S, de Hoog GS, Verweij PE, Zoll J, Ilkit M, Morsali F, Abliz P, Wang X, Zhan P, Yang L, Hasimu H, Liao W, Pan W, Seyedmousavi S. In vitro antifungal susceptibility of Trichophyton violaceum isolated from tinea capitis patients. J Antimicrob Chemother 2014; 70:1072-5. [PMID: 25492394 DOI: 10.1093/jac/dku503] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
Abstract
OBJECTIVES Trichophyton violaceum is an anthropophilic dermatophyte that is endemic to parts of Africa and Asia and is sporadic in Europe. T. violaceum mainly causes tinea capitis in both children and adolescents. Although the infections caused by T. violaceum are of considerable medical importance, its antifungal susceptibility profile remains poorly examined. METHODS In this study, we tested the in vitro antifungal susceptibility of a set of clinical T. violaceum isolates obtained from tinea capitis patients, using the CLSI broth microdilution method. We tested eight antifungals and used isolates collected from Western China (21), Eastern China (12), the Middle East (1), Europe (20), South Africa (7) and Canada (1). RESULTS The geometric means of the MICs of the antifungals for all isolates were as follows (in increasing order): posaconazole, 0.021 mg/L; terbinafine, 0.023 mg/L; voriconazole, 0.062 mg/L; amphotericin B, 0.20 mg/L; itraconazole, 0.34 mg/L; caspofungin, 0.56 mg/L; fluconazole, 4.23 mg/L; and flucytosine, 8.46 mg/L. No statistically significant differences in the susceptibility profiles of T. violaceum were detected within the geographical regions tested. CONCLUSIONS Posaconazole, terbinafine and voriconazole were shown to be the most potent antifungal agents against T. violaceum isolates obtained from tinea capitis patients worldwide. These results might help clinicians in developing appropriate therapies that have a high probability of successfully treating tinea capitis due to T. violaceum.
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Fu Y, Li R, Zhong J, Fu N, Wei X, Cun X, Deng S, Li G, Xie J, Cai X, Lin Y. Adipogenic differentiation potential of adipose-derived mesenchymal stem cells from ovariectomized mice. Cell Prolif 2014; 47:604-14. [PMID: 25203126 DOI: 10.1111/cpr.12131] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2014] [Accepted: 06/27/2014] [Indexed: 02/06/2023] Open
Abstract
OBJECTIVES In human post-menopausal osteoporosis, enhanced adipogenesis in bone marrow and enhanced formation of adipose tissue in vivo are observed. These changes correlate with reduced trabecular bone volume and increased adipocyte cell size as well as cell number. However, cellular and molecular mechanisms underlying osteoporosis-related changes in adipocyte cell volume are not known. This study was designed to compare adipogenic potential of adipose tissue-derived stem cells (ADSCs) obtained from ovariectomized mice with that of control ADSCs, and to analyse pathological mechanisms from the point of functional changes of ADSCs. MATERIALS AND METHODS Healthy female C57BL/6J mice were randomly divided into ovariectomy and sham-surgery groups. Mouse ADSCs were isolated and cultured in vitro up to passage 3. After adipogenic induction, oil red O staining of lipid droplets was used to detect adipogenic ability of ADSCs; real-time PCR and immunofluorescence staining were used to detect expression of adipogenesis-related genes and proteins. RESULTS As indicated by increased expression of adipogenic and lipogenic genes and proteins, and lipid droplets accumulation shown by oil red-O staining, adipogenic differentiation of ADSCs was significantly enhanced in the ovariectomy group compared to the sham-surgery group (P < 0.05). CONCLUSION These findings suggest that enhanced adipogenic differentiation of ADSCs is likely to be the important cause for increased adipogenesis in vivo and subsequent obesity-like changes in body mass, in mice, after ovariectomy.
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Law DKS, Zhou J, Deng S, Hoang L, Tyrrell G, Horsman G, Wylie J, Tsang RSW. Determination of serotyping antigens, clonal analysis and genetic characterization of the 4CMenB vaccine antigen genes in invasive Neisseria meningitidis from Western Canada, 2009 to 2013. J Med Microbiol 2014; 63:1490-1499. [PMID: 25165123 DOI: 10.1099/jmm.0.079921-0] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
Abstract
This study examined invasive Neisseria meningitidis recovered from invasive meningococcal disease (IMD) cases in Western Canada between 2009 and 2013. A total of 161 isolates from individual IMD cases were analysed for serogroup, serotype, serosubtype, PorA genotype, multi-locus sequence type and nucleotide sequence of their 4CMenB vaccine antigen genes. Sixty-nine isolates were serogroup B (MenB), 47 were serogroup Y (MenY), 22 were serogroup C (MenC), 19 were serogroup W (MenW), three were serogroup E and one was non-encapsulated. MenC, MenY and MenW were mainly clonal, represented primarily by clonal complex (cc) 11, cc23 or cc167, and cc22, respectively. In contrast, MenB were composed of eight different ccs together with 11 isolates not assigned to any known cc. Antigenic analysis and PorA genotyping confirmed the heterogeneity of MenB isolates, while such results supported the clonal nature of most MenC, MenY and MenW isolates. Thirty-four (21.1%) isolates had at least one gene that encoded one matching vaccine protein component of the 4CMenB vaccine (i.e. PorA P1.4; fHbp variant 1.1; NHBA peptide 2; and NadA-1, -2, or -3). An additional 18 isolates had genes that encoded variant 1 or subfamily B factor H binding proteins of this same vaccine.
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Fu N, Deng S, Fu Y, Li G, Cun X, Hao L, Wei X, Cai X, Peng Q, Lin Y. Electrospun P34HB fibres: a scaffold for tissue engineering. Cell Prolif 2014; 47:465-75. [PMID: 25124858 DOI: 10.1111/cpr.12122] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Accepted: 06/14/2014] [Indexed: 12/27/2022] Open
Abstract
OBJECTIVES Amongst the fourth generation of PHAs is bio-plasticpoly3-hydroxybutyrate4-hydroxybutyrate (P34HB); it is thus appropriate to perform novel research on its uses and applications. The main objective of this study was to determine whether electrospun P34HB fibres would accommodate viability, growth and differentiation of mouse adipose-derived stem cells (mASCs). MATERIALS AND METHODS In the present study, we looked at P34HB in two forms, electrospun P34HB fibres and P34HB film. Morphology of electrospun P34HB fibres and P34HB film were characterized using scanning electron microscopy, fluorescence microscopy and confocal laser scanning microscopy, after cell seeding. Cell adhesion, proliferation and cytotoxicity tests were conducted on both by MTT and CCK-8 assays, respectively. After being cultured with osteogenic induction, expression of adipogenic genes Runx2, OPN and OCN, were examined by real-time PCR. RESULTS By scanning electron microscopy, light microscopy and confocal laser scanning microscopy, we observed that the mASCs grew well associated with the P34HB materials. After MTT and CCK-8 assay, we concluded that P34HB would, indeed, be a material suitable for further cell adhesion and proliferation studies. More importantly, we found that the P34HB matrices promoted expression of Runx2, OPN and OCN with osteogenic induction. CONCLUSIONS In this investigation, we can confirm that the electrospun P34HB fibres accommodated survival, proliferation and differentiation of mASCs, and we have been able to draw the conclusion that fibre scaffolds produced by the electrospinning process are promising for application of bone tissue engineering.
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Guo Z, Deng S, Xu Y, Wang D, He X. Elderly Donors Versus Non-Elderly Donors for Liver Transplantation Among Different Expended Criteria: A Meta-Analysis. Transplantation 2014. [DOI: 10.1097/00007890-201407151-02479] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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85
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Liao S, Mei J, Song W, Liu Y, Tan YD, Chi S, Li P, Chen X, Deng S. The impact of the International Association of Diabetes and Pregnancy Study Groups (IADPSG) fasting glucose diagnostic criterion on the prevalence and outcomes of gestational diabetes mellitus in Han Chinese women. Diabet Med 2014; 31:341-51. [PMID: 24152069 DOI: 10.1111/dme.12349] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2013] [Revised: 09/26/2013] [Accepted: 09/27/2013] [Indexed: 02/04/2023]
Abstract
AIMS The International Association of Diabetes and Pregnancy Study Groups (IADPSG) proposed that a one-time value of fasting plasma glucose of 5.1 mmol/l or over at any time of the pregnancy is sufficient to diagnose gestational diabetes. We evaluated the repercussions of the application of this threshold in pregnant Han Chinese women. METHODS This is a retrospective study of 5360 (72.3% of total) consecutively recruited pregnant Han Chinese women in one centre from 2008 to 2011. These women underwent a two-step gestational diabetes diagnostic protocol according to the previous American Diabetes Association criteria. The IADPSG fasting plasma glucose criterion was used to reclassify these 5360 women. The prevalence, clinical characteristics and obstetric outcomes were compared among the women classified as having gestational diabetes by the previous American Diabetes Association criteria (approximately 90% were treated), those reclassified as having gestational diabetes by the single IADPSG fasting plasma glucose criterion (untreated), but not as having gestational diabetes by the previous American Diabetes Association criteria, and those with normal glucose tolerance. RESULTS There were 626 cases of gestational diabetes defined by the previous American Diabetes Association criteria (11.7%) and these cases were associated with increased risks of maternal and neonatal outcomes when compared with the women with normal glucose tolerance. With the IADPSG fasting plasma glucose criterion, another 1314 (24.5%) women were reclassified as having gestational diabetes. Gestational diabetes classified by the IADPSG fasting plasma glucose criterion was associated with gestational hypertension (P = 0.0094) and neonatal admission to nursery (P = 0.035) prior to adjustment for maternal age and BMI, but was no longer a predictor for adverse pregnancy outcomes after adjustment. CONCLUSION The simple IADPSG fasting plasma glucose criterion increased the Chinese population with gestational diabetes by 200%. The increased population with gestational diabetes was not significantly associated with excess obstetric and neonatal morbidity.
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Li X, Li N, Wang C, Deng S, Sun X, Zhang W, Gao W, Zhao D, Lu Y, Chen X. Development and Validation of a Simple and Reliable LC-MS/MS Method for the Determination of Acetazolamide, an Effective Carbonic Anhydrase Inhibitor, in Plasma and its Application to a Pharmacokinetic Study. Drug Res (Stuttg) 2014; 64:499-504. [DOI: 10.1055/s-0033-1363270] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Deng S, Bai L, Reboulet R, Matthew R, Engler DA, Teyton L, Bendelac A, Savage PB. A peptide-free, liposome-based oligosaccharide vaccine, adjuvanted with a natural killer T cell antigen, generates robust antibody responses in vivo.. Chem Sci 2014; 5:1437-1441. [PMID: 24683450 DOI: 10.1039/c3sc53471e] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Due to the prevalence of oligo- and polysaccharides on the surfaces of pathogenic organisms, carbohydrates are primary targets for recognition by antibodies generated by the immune systems of higher organisms. Consequently, substantial effort has been expended in efforts to develop vaccines based on carbohydrate epitopes. Typical approaches involve multivalent presentation of carbohydrate targets on antigenic peptides or proteins, which often involve substantial synthetic commitments and/or vaccines that are heterogeneous and difficult to characterize. We have developed a simple, liposome-based approach to generate multivalent carbohydrate vaccines, and in place of an antigenic peptide or protein, we have used a potent antigen for natural killer T cells. This vaccine, based on the Streptococcus pneumoniae serotype 14 polysaccharide, gave a response superior to that from a clinically used vaccine (Prevnar). The dependence of this response on liposome formation was demonstrated by comparison to a simple mixture of the oligosaccharide and the natural killer T cell adjuvant. The importance of the strength of the adjuvant was observed by use of a potent synthetic adjuvant and a weaker, bacterial derived glycolipid adjuvant. These results demonstrate the effectiveness of this novel and relatively simple means of generating carbohydrate-based vaccines.
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Rongé J, Deng S, Pulinthanathu Sree S, Bosserez T, Verbruggen SW, Kumar Singh N, Dendooven J, Roeffaers MBJ, Taulelle F, De Volder M, Detavernier C, Martens JA. Air-based photoelectrochemical cell capturing water molecules from ambient air for hydrogen production. RSC Adv 2014. [DOI: 10.1039/c4ra05371k] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023] Open
Abstract
A system is demonstrated that autonomously produces hydrogen gas using sunlight and outside air as the only inputs.
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Deng S, May B, Zhang A, Lu C, Xue C. Plant extracts for the topical management of psoriasis: a systematic review and meta-analysis. Br J Dermatol 2013; 169:769-82. [DOI: 10.1111/bjd.12557] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 05/28/2013] [Indexed: 01/09/2023]
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Zhao X, Deng S, Liu L, Liu L. Sieve estimation in semiparametric modeling of longitudinal data with informative observation times. Biostatistics 2013; 15:140-53. [DOI: 10.1093/biostatistics/kxt040] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Gagliani N, Jofra T, Valle A, Stabilini A, Morsiani C, Gregori S, Deng S, Rothstein DM, Atkinson M, Kamanaka M, Flavell RA, Roncarolo MG, Battaglia M. Transplant tolerance to pancreatic islets is initiated in the graft and sustained in the spleen. Am J Transplant 2013; 13:1963-75. [PMID: 23834659 PMCID: PMC3869180 DOI: 10.1111/ajt.12333] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2012] [Revised: 03/18/2013] [Accepted: 03/18/2013] [Indexed: 01/25/2023]
Abstract
The immune system is comprised of several CD4(+) T regulatory (Treg) cell types, of which two, the Foxp3(+) Treg and T regulatory type 1 (Tr1) cells, have frequently been associated with transplant tolerance. However, whether and how these two Treg-cell types synergize to promote allograft tolerance remains unknown. We previously developed a mouse model of allogeneic transplantation in which a specific immunomodulatory treatment leads to transplant tolerance through both Foxp3(+) Treg and Tr1 cells. Here, we show that Foxp3(+) Treg cells exert their regulatory function within the allograft and initiate engraftment locally and in a non-antigen (Ag) specific manner. Whereas CD4(+) CD25(-) T cells, which contain Tr1 cells, act from the spleen and are key to the maintenance of long-term tolerance. Importantly, the role of Foxp3(+) Treg and Tr1 cells is not redundant once they are simultaneously expanded/induced in the same host. Moreover, our data show that long-term tolerance induced by Foxp3(+) Treg-cell transfer is sustained by splenic Tr1 cells and functionally moves from the allograft to the spleen.
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Wang C, Liu L, Fu Q, Meng F, Li J, Deng S, Fei J, Yuan X, Han M, Chen L, Qiu J, Chen G, Wang H, Huo F, Li J, Lin M, He X. Kidney transplantation from donors after brain or cardiac death in China--a clinical analysis of 94 cases. Transplant Proc 2013; 45:1323-6. [PMID: 23726563 DOI: 10.1016/j.transproceed.2013.01.083] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/15/2012] [Accepted: 01/24/2013] [Indexed: 10/26/2022]
Abstract
BACKGROUND We analyzed outcomes of kidney transplantation (KTx) from donation after brain death (DBD) or cardiac death (DCD) in China under the current level of the health care system. METHODS Among 94 KTx performed from February 2007 to March 2012 in two organ transplant centers in the south of China, 50 KTx were used DBD and 44 DCD donors. We retrospectively analyzed the clinical outcomes. RESULTS At a mean follow-up of 25.5 months, the 1-year and 2-year graft survival rates were 96.8% and 95.2% respectively. Delayed graft function (DGF) occurred in 27.7% recipients, three of whom lost graft function. Among six observed acute rejection episodes, five were reversed. When compared to the DCD group in DBD patients were apt to recover from DGF. Serum creatinine decreased more promptly in the DBD than in DCD group. Serum creatinine in the DCD group increased after months 12, when it was significantly higher than that in the DBD group (P < .05). CONCLUSIONS Kidney transplantation from DBD donors showed good outcomes with few complications. Although KTx from DCD donors showed a higher DGF rate and longer duration of graft recovery, we achieved favorable short-term clinical outcome using this source.
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Yuan T, Tang C, Chen M, Deng S, Chen P. Influence of the human MIF promoter polymorphism on hepatocellular carcinoma prognosis. GENETICS AND MOLECULAR RESEARCH 2013; 12:6629-35. [PMID: 23315862 DOI: 10.4238/2013.janruary.4.3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Hepatocellular carcinoma (HCC) is one of the most common worldwide malignancies. A relative complete diagnosis system for primary carcinoma of liver has already been established, but the surgical prognosis for HCC, which depends mainly on postoperative pathological classification and data of recurrence and metastasis, lacks valid experimental indicators. Macrophage migration inhibition factor (MIF) is related to many cancers; hence, the polymorphism of MIF genes may be associated with the surgical prognosis of HCC. The purpose of this study was to investigate the relationship between polymorphisms of MIF gene promoter 794CATT (MIF-794CATT) microsatellite repeats and HCC surgical prognosis and evaluate the contribution of polymorphism to the prognosis of hepatectomy. Sequencing was used to identify the MIF-794CATT of 241 patients who had been submitted to HCC surgery. These patients were classified into 2 groups: one with MIF-794CATT high-repetitive-sequence genotypes (7/x+8/x) and one with low-repetitive-sequence genotypes (5/5+5/6+6/6). Five indictors were analyzed: average survival times were compared using the t-test, and tumor-node-metastasis staging, recurrence and metastasis, differentiation grade, and survival rate were compared using the chi-square test. The (7/x+8/x) CATT group had 139 patients and the (5/5+5/6+6/6) CATT group had 102. Significant differences were found in the 5 factors (P = 0.000, 0.008, 0.002, 0.000, and 0.003, respectively). Patients with MIF-794CATT5-8 low-repetitive-sequence genotypes had better prognosis than those with high-repetitive-sequence genotypes. The polymorphism detection of MIF-794CATT microsatellite repeats is valuable for HCC surgical prognosis.
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Yuan T, Tang C, Chen M, Deng S, Chen P. Influence of the human MIF promoter polymorphism on hepatocellular carcinoma prognosis. GENETICS AND MOLECULAR RESEARCH 2013. [DOI: 10.4238/2013.january.4.3] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Zhu ZT, Deng S, Liu D, Zhang BJ, Sun HZ, Tian Y, Wang CY, Wang L, Ma XC. Isolation and identification of phase I metabolites of resibufogenin in rats. Xenobiotica 2012; 43:479-85. [DOI: 10.3109/00498254.2012.728728] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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Jamieson FB, Rawte P, Deeks SL, Zhou J, Law DKS, Deng S, Tsang RSW. Genetic and antigenic characterization of invasive endemic serogroup B Neisseria meningitidis from Ontario, Canada, in 2001-2010. J Med Microbiol 2012; 62:46-55. [PMID: 23038803 DOI: 10.1099/jmm.0.050369-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
This study examined the antigenic and genetic diversity of serogroup B Neisseria meningitidis (MenB) recovered from invasive meningococcal disease (IMD) cases in Ontario, Canada, over the period 2001-2010 during which no MenB outbreaks had occurred. MenB was found to be responsible for 39 % of all IMD cases, with the remaining cases caused mainly by serogroups Y (28 %), C (23.5 %) and W135 (8 %). One hundred and ninety-three individual MenB case isolates were collected and characterized. Of the 88 sequence types (STs) identified, 75 were grouped into 14 known clonal complexes (CCs), whilst 13 STs were not assigned to any known CC. Fifty-seven different PorA genotypes and 88 STs defined the diversity of invasive MenB in Ontario, which supported the endemic nature of MenB disease in Ontario. Despite the presence of the hypervirulent ST-41/44 and ST-32 CCs, no single ST was predominant and responsible for a large number of IMD cases. Although the Québec outbreak clone of ST-269 was also found in Ontario, the 20 case isolates were genetically diverse: they grouped into seven STs and did not have a predominant PorA genotype. eburst analysis identified a new CC responsible for 14.5 % of the MenB case isolates. The six most common PorA variable region 2 (VR2) genotypes (VR2-9, -4, -14, -16, -13-1 and -16-3) were found in 67 % of invasive MenB isolates.
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Waldron-Lynch F, Deng S, Preston-Hurlburt P, Henegariu O, Herold KC. Analysis of human biologics with a mouse skin transplant model in humanized mice. Am J Transplant 2012; 12:2652-62. [PMID: 22900715 DOI: 10.1111/j.1600-6143.2012.04178.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Preclinical testing of human therapeutic monoclonal antibodies has been limited in murine models due to species differences in pharmacokinetics and biologic responses. To overcome these constraints we developed a murine skin transplant model in humanized mice and used it to test human monoclonal antibody therapy. Neonatal NOD/SCID/IL2Rγc(null) mice (NSG) were reconstituted with human CD34(+) hematopoietic stem cells (hNSG). When adult, these mice rejected MHC mismatched murine C57BL/6J skin grafts. Rejection required adequate reconstitution with human cells. There was diffuse infiltration of the epidermis and dermis with hCD8 and hCD4 cells in rejected grafts by immunohistochemistry. Studies with B6/MHC class I and II knockout mice donors indicated that neither is required for rejection. Graft rejection was associated with the development of effector and central memory T cells and an increase in serum immunoglobulins. We also tested the effects of teplizumab (anti-CD3 mAb) and found it could delay skin graft rejection, whereas ipilimumab (anti-CTLA-4 [cytotoxic T-lymphocyte antigen-4] mAb) treatment accelerated rejection. These findings demonstrate that hNSG mice reliably and predictably reject a xenogenic mouse skin graft by a human T cell mediated mechanism. The model can be utilized to investigate the ability of human immunotherapies to enhance or suppress functional human immune responses.
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Wang L, Deng S, Lu Y, Zhang Y, Yang L, Guan Y, Jiang H, Li H. Increased inflammation and brain injury after transient focal cerebral ischemia in activating transcription factor 3 knockout mice. Neuroscience 2012; 220:100-8. [DOI: 10.1016/j.neuroscience.2012.06.010] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2012] [Revised: 05/26/2012] [Accepted: 06/06/2012] [Indexed: 12/19/2022]
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Lv X, Wang CY, Hou J, Zhang BJ, Deng S, Tian Y, Huang SS, Zhang HL, Shu XH, Zhen YH, Liu KX, Yao JH, Ma XC. Isolation and identification of metabolites of osthole in rats. Xenobiotica 2012; 42:1120-7. [DOI: 10.3109/00498254.2012.689887] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Wang C, Fu Q, Liu L, Li J, Fei J, Deng S, Liu Y, Chen L, Qiu J, Chen G, Huang G. Kidney transplantation from donation after cardiac death donors in China--a single-center experience. Transplant Proc 2012; 44:862-4. [PMID: 22564568 DOI: 10.1016/j.transproceed.2012.03.037] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To report clinical outcomes of kidney transplantation from cardiac death donors (DCD) in China, and to investigate its feasibility to expand the organ donor pool. PATIENTS AND METHODS We retrospectively studied clinical data of 46 DCD kidneys from 31 donors from February 2007 to August 2011. Recipients were followed for patient and graft survival. RESULTS We discarded the organs from 3 of 29 (10.3%) DCD donors and 7 of 42 (16.7%) kidneys that displayed renal thrombosis. Of the 39 recipients engrafted with DCD kidneys successfully, the mean follow-up was 16 months, (range = 50 days to 43 months). Delayed graft function (DGF) occurred in 15 (38.5%) recipients, who except one recovered within 3 months. Three biopsy-proven acute rejection episodes were observed in two recipients (5.1%). All patients survived through the follow-up. The graft survival rate was 97.4% at 12 months and 94.9% at 24 months. A 45-year-old male recipient who received a pair of grafts from a 6-year-old child survived with good renal function. CONCLUSION Although kidney transplantations from DCD donors showed a higher rate of DGF with a longer duration of graft recovery, we achieved favorable short-term clinical outcome in terms of graft survival and function. Donation after cardiac death can expand the organ donor pool in China.
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