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| 1 | Relationship between T-lymphocyte cytokine levels and sero-response to hepatitis B vaccines显示文摘AIM: To investigate the cellular defects by analyzing the (Th1/Th2) cytokine levels in vaccine responders and non-responders. METHODS: Peripheral blood mononuclear cell (PBMC) from responders and non-responders were stimulated with or with out recombinant HBsAg or PHA. Broad spectrum of cytokines viz (Th1) IFN-γ, IL-2, TNF-α, IL-12 and (Th2) IL-10, IL-4 were measured after in vitro stimulation with recombinant HBsAg and were compared with respective antibody titers. RESULTS: A significant decrease (P = 0.001) in Th1 and Th2 cytokines namely, IL-2, INF-γ, TNF-α and IL-10in non-responders was observed. The level of IL-4 was not significant between the three groups. Furthermore, despite a strong Th1 and Th2 cytokine response, the level of IL-12 was elevated in high-responders compared to other groups (P = 0.001) and demonstrated a positive correlation with anti-HBs titers and Th1 cytokine response. CONCLUSION: Our findings suggest that unrespon-siveness to recombinant hepatitis B vaccines (rHB) is multifactorial, including specific failure of antigen presentation or the lack of both T helper Th1 and Th2 response. | Vijayakumar Velu Shanmugam Saravanan Subhadra Nandakumar Esaki Muthu Shankar Appasamy Vengatesan Suresh Sakharam Jadhav Prasad Suryakant Kulkarni Sadras Panchatcharam Thyagarajan | 2008 | World Journal of Gastroenterology2008，14，22： | 22 |
| 2 | Analysis of genetic relationship in mutant silkworm strains of Bom-byx mori using inter simple sequence repeat (ISSR) markers显示文摘Amplified inter simple sequence repeats (ISSR) markers were used to determine genetic relationships among mutant silkworm strains of Bombyx mori. Fifteen ISSR primers containing simple sequence repeat (SSR) motifs were used in this study. A total of 113 markers were produced among 20 mutant strains, of which 73.45% were found to be polymorphic. In selected mutant genetic stocks, the average number of observed allele was (1.7080 ± 0.4567), effective alleles (1.5194 ± 0.3950) and genetic diversity (Ht) (0.2901 ± 0.0415). The dendrogram produced using the unweighted pair group method with arithmetic means (UPGMA) and cluster analysis made using Nei’s genetic distance resulted in the formation of one major group containing 6 groups separated 20 mutant silkworm strains. Therefore, ISSR amplification is a valuable method for determining the genetic variability among mutant silkworm strains. This efficient molecular marker would be useful for characterizing a considerable number of silkworm strains maintained at the germplasm center. | Dhanikachalam Velu Kangayam M. Ponnuvel Murugiah Muthulakshmi Randhir K. Sinha Syed M.H. Qadri | 2008 | Journal of Genetics and Genomics2008，35，5： | 7 |
| 3 | Challenges in animal modelling of mesenchymal stromal cell therapy for inflammatory bowel disease显示文摘Utilization of mesenchymal stromal cells(MSCs) for the treatment of Crohn's disease and ulcerative colitis is of translational interest.Safety of MSC therapy has been well demonstrated in early phase clinical trials but efficacy in randomized clinical trials needs to be demonstrated.Understanding MSC mechanisms of action to reduce gut injury and inflammation is necessary to improve current ongoing and future clinical trials.However, two major hurdles impede the direct translation of data derived from animal experiments to the clinical situation:(1) limitations of the currently available animal models of colitis that reflect human inflammatory bowel diseases(IBD).The etiology and progression of human IBD are multifactorial and hence a challenge to mimic in animal models; and(2) Species specific differences in the functionality of MSCs derived from mice versus humans.MSCs derived from mice and humans are not identical in their mechanisms of action in suppressing inflammation.Thus, preclinical animal studies with murine derived MSCs cannot be considered as an exact replica of human MSC based clinical trials.In the present review, we discuss the therapeutic properties of MSCs in preclinical and clinical studies of IBD.We also discuss the challenges and approaches of using appropriate animal models of colitis, not only to study putative MSC therapeutic efficacy and their mechanisms of action, but also the suitability of translating findings derived from such studies to the clinic. | Raghavan Chinnadurai Spencer Ng Vijayakumar Velu Jacques Galipeau | 2015 | World Journal of Gastroenterology2015，21，16： | 6 |
| 4 | Coinfection of hepatitis B and hepatitis C virus in HIV-infectedpatients in south India显示文摘AIM: To screen for the co-infection of hepatitis B (HBV) and hepatitis C virus (HCV) in human immunodeficiency virus (HIV) infected patients in southern India. METHODS: Five hundred consecutive HIV infected patients were screened for Hepatitis B Virus (HBsAg and HBV-DNA) and Hepatitis C virus (anti-HCV and HCV-RNA) using commercially available ELISA kits; HBsAg, HBeAg/ anti-HBe (Biorad laboratories, USA) and anti-HCV (Murex Diagnostics, UK). The HBV-DNA PCR was performed to detect the surface antigen region (pre S-S). HCV-RNA was detected by RT-PCR for the detection of the constant 5' putative non-coding region of HCV. RESULTS: HBV co-infection was detected in 45/500 (9%) patients and HCV co-infection in 11/500 (2.2%) subjects. Among the 45 co-infected patients only 40 patients could be studied, where the detection rates of HBe was 55% (22/40), antiHBe was 45% (18/40) and HBV-DNA was 56% (23/40). Among 11 HCV co-infected subjects, 6 (54.5%) were anti-HCV and HCV RNA positive, while 3 (27.2%) were positive for anti-HCV alone and 2 (18%) were positive for HCV RNA alone. CONCLUSION: Since the principal routes for HIV transmission are similar to that followed by the hepatotropic viruses, as a consequence, infections with HBV and HCV are expected in HIV infected patients. Therefore, it would be advisable to screen for these viruses in all the HIV infected individuals and their sexual partners at the earliest. | Shanmugam Saravanan Vijayakumar Velu Nagalingeswaran Kumarasamy Subhadra Nandakumar Kailapuri Gangatharan Murugavel Pachamuthu Balakrishnan Solomon Suniti Sadras Panchatcharam Thyagarajan | 2007 | World Journal of Gastroenterology2007，13，37： | 6 |
| 5 | Arbuscular Mycorrhizal Fungi Colonization in Upland Rice as Influenced by Agrochemical Application显示文摘Mycorrhizal status of rice under upland conditions was studied using potted seedlings. Percentage of arbuscular mycorrhizal fungi (AMF) root colonization varied between 17.35% and 37.18% over an age series of 7 to 70 days old rice plants. AMF root colonization was increased up to 35-42 days, beyond which the root colonization steadily declined. The vesicles appeared after two weeks and reached their maximum intensity on the 35th day. The arbuscules were formed late on the 42nd day (2.93%) and slightly varied up to the 70th day (3.03%). Higher dosage of urea application suppressed plant growth whereas the superphosphate treatment had no marked impact on plant growth. Generally, application of these agrochemicals registered less influence on the hyphal colonization of AMF in rice plants, whereas arbuscular colonization was adversely affected by higher dosages of fertilizers. There were pronounced decreases in both the plant growth and their AMF colonization due to the application of systemic fungicides, carbendazim and thiophanate methyl. The application of single sprays of fungicides was less deleterious over multiple sprays. | Velu RAJESHKANNAN Chettipalayam Samiappan SUMATHI Sellamuthu MANIAN | 2009 | Rice science2009，16，4： | 4 |
| 6 | Comparison of three different recombinant hepatitis B vaccines:GeneVac-B,Engerix B and Shanvac B in high risk infants born to HBsAg positive mothers in India显示文摘AIM: To evaluate a low cost Indian recombinant hepatitis B vaccine GeneVac-B for its immunogenicity and safety in comparison to Engerix B and Shanvac B vaccine in high risk newborn infants born to hepatitis B surface antigen (HBsAg) positive mothers. METHODS: A total of 158 infants were enrolled in the study. Fifty eight infants were enrolled in the GeneVac-B group while 50 each were included for Engerix B and Shanvac B groups. A three-dose regimen of vaccination; at birth (within 24 h of birth), 1st mo and 6 mo. were adopted with 10 μg dosage administered uniformly in all the three groups. Clinical and immunological parameters were assessed for safety and immunogenicity of the vaccines, in all the enrolled infants. RESULTS: Successful follow up until seven months of age was achieved in 83/ (48/58) for GeneVac-B, 76/ (38/50) and 64/ (32/50) for Engerix B and Shanvac B groups respectively. 100/ seroconversion and seroprotection was achieved in all the three groups of infants. The geometric mean titers of anti-HBs one month after the completion of three dose of vaccination were 90.5, 80.9 and 72.5 mIU/mL in GeneVac-B, Engerix B and Shanvac B vaccine group respectively. Furthermore the level of anti-HBs increases with age ofbabies who were born to HBsAg positive mothers. The GMT values of anti-HBs were 226.7, 193.9 and 173.6 mIU/mL respectively in GeneVac-B, Engerix B and Shanvac B groups one year after the completion of the three doses of vaccine. No systemic reactions were reported in infants during the entire vaccination process of GeneVac-B and the other two vaccines. Clinical safety parameters remained within the normal limits throughout the study period.CONCLUSION: The study concludes that there is no significant difference between the three recombinant hepatitis B vaccines. Administration of these vaccines within 24 h of birth to babies, born to HBsAg positive mothers will reduce the incidence of HBV infection. | Vijayakumar Velu Subhadra Nandakumar Saravanan Shanmugam Suresh Sakharam Jadhav Prasad Suryakant Kulkarni Sadras Panchatcharam Thyagarajan | 2007 | World Journal of Gastroenterology2007，13，22： | 4 |
| 7 | Colonic adenocarcinoma,mucosa associated lymphoid tissue lymphoma and tuberculosis in a segment of colon:A case report显示文摘Synchronous occurrence of adenocarcinoma and mucosa associated lymphoid tissue(MALT) lymphoma of colon is rare,and its presence with coexisting tuberculosis is still rarer.To our knowledge,this may be the first case report.In the present report,we describe a 43-year-old female who presented with a history of abdominal pain,fever,loss of weight and loss of appetite.Colonoscopy showed a large ulceroproliferative mass arising from the caecum,biopsy of which showed it to be adenocarcinoma of the colon.A right hemicolectomy was performed and microscopic study of the colon revealed tuberculosis and synchronous adenocarcinoma with lymphoma.Eight of sixteen lymph nodes showed tuberculosis and three of sixteenpericoloniclymphnodes showed metastatic deposits.Immunostains further confirmed the tumour to be adenocarcinoma with MALT lymphoma.We would like to highlight the diagnostic challenges arising from the multi-faceted presentations of these three conditions. | Ambedkar Raj Kulandai Velu Banushree C Srinivasamurthy Krishnan Nagarajan Ilavarasi Sinduja | 2014 | World Journal of Gastrointestinal Oncology2014，6，9： | 3 |
| 8 | Recent advances in isolation, synthesis, and evaluation of bioactivities of bispyrroloquinone alkaloids of marine origin显示文摘The ocean continues to provide a plethora of unique scaffolds capable of remarkable biological applications. A large number of pyrroloiminoquinone alkaloids, including discorhabdins, epinardins, batzellines, makaluvamines, and veiutamine, have been isolated from various marine organisms. A class of pyrroloiminoquinone-related alkaloids, known as bispyrroloquinones, is the focus of this review article. This family of marine alkaloids, which contain an aryl substituted bispyrroloquinone ring system, includes three subclasses of alkaloids namely, wakayin, tsitsikammamines A-B, and zyzzyanones A-D. Both wakayin and the tsitsikammamines contain a tetracyclic fused bispyrroloiminoquinone ring system, while zyzzyanones contain a fused tricyclic bispyrroloquinone ring system. The unique chemical structures of these marine natural products and their diverse biological properties, including antifungal and antimicrobial activity, as well as the potent, albeit generally nonspecific and universal cytotoxicities, have attracted great interest of synthetic chemists over the past three decades. Tsitsikammamines, wakayin, and several of their analogs show inhibition of topoisomerases. One additional possible mechanism of anticancer activity of tsitsikammamines analogs that has been discovered recently is through the inhibition of indoleamine 2, 3-dioxygenase, an enzyme involved in tumoral immune resistance. This review discusses the isolation, synthesis, and evaluation of bioactivities of bispyrroloquinone alkaloids and their analogs. | NIJAMPATNAM Bhavitavya DUTTA Shilpa VELU Sadanandan E. | 2015 | Chinese Journal of Natural Medicines2015，13，8： | 2 |
| 9 | Cardiac involvement in patients with acute neurologic disease:confirmation with cardiac troponin Ⅰ显示文摘 | Dixit S Castle M Velu RP | 2000 | Arch Intern Med2000，160，： | 1 |
| 10 | MVA-MUC1-IL2 vaccine immunotherapy for advanced non-small cell lung cancer (NSCLC): Interim phase Ⅱ data显示文摘 | Squiban P Velu T Menecier B | 2004 | J Clin Oncol2004，22，14： | 1 |
| 11 | CoSm-based high-coercivity thin films for lanitudinal recording 显示文摘 | Velu E M T Lambeth D N | 1991 | J Appl Phys1991，69，8： | 1 |
| 12 | High Density Recording on SmCo/Cr Thin Film Media显示文摘 | Velu E M T Lambeth D N | 1992 | IEEE T-MAG1992，28，5： | 1 |
| 13 | Deep Desulfurization of Gaso-line by Selective Adsorption over Solid Adsorbents andImpact of Analytical Methodson ppm-Level SulfurQuantification for Fuel Cell Applications 显示文摘 | Ma X Velu S Kim J H | 2005 | AppliedCatalysis B :Environmental2005，56，12： | 1 |
| 14 | Comparison of Groundwater Transit Velocity Estimates from Flux Theory and Water Table Recession Based Approaches for Solute Transport显示文摘 | Rasiah Velu Armour John David | 2013 | Journal of Environmental Management2013，116，： | 1 |
| 15 | Deep desulfurization of gasoline by selective adsorption over solid adsorbents and impact of analytical methods on ppmlevel sulfer quantification for fuel cell applications显示文摘 | Subramani Velu Jae Hyung Kim | 2005 | Applied Catalysis2005，56，： | 1 |
| 16 | AFM structure and media noise of SmCo/Cr thin films and hard disks显示文摘 | Velu E M T Lambeth D N | 1994 | J Appl Phys1994，75，10： | 1 |
| 17 | Cost-utility and value- of-information analysis of early versus delayed laparo- scopic cholecystectomy for acute cholecystitis显示文摘 | Velu PP Hor K Leighton S | 2010 | Dig Dis Sci2010，97，7： | 1 |
| 18 | Selective C-alkylation of phenol with methanol over catalysts derived from copper-aluminium hydrotalcite-like compounds 显示文摘 | Velu S Swamy C S | 1996 | ApplCatalA:General1996，145，： | 1 |
| 19 | Effects of pretreatments and drying methods on dehydration of mushroom显示文摘 | WALDE S G VELU V JYOTHIRMAYI T | 2006 | Journal of Food Engineering2006，74，1： | 1 |
| 20 | Alkylation of phenol with methanol over magnesium-aluminium calcined hydrotalcites显示文摘 | VELU S SWAMY C S | 1994 | Appl Catal1994，119，： | 1 |
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