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Singh K, Yamada D, Tearney G. Common Path Side Viewing Monolithic Ball Lens Probe for Optical Coherence Tomography. Sovrem Tekhnologii Med 2015. [DOI: 10.17691/stm2015.7.1.04] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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202
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Ripperda C, Garcia A, Singh K, Schaffer J, Wai C. Anatomic Course of the Ureter in Relation to Vertebral and Vascular Landmarks on Computed Tomography. J Minim Invasive Gynecol 2015. [DOI: 10.1016/j.jmig.2014.12.068] [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]
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Singh K, Rani R, Bansal P, Medhe S, Srivastava MM. Antioxidant activity of essential oil of Coriandrum sativum and standardization of HPTLC method for the estimation of major phytomarkers. JOURNAL OF ANALYTICAL CHEMISTRY 2015. [DOI: 10.1134/s1061934815020094] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Mukherji A, Rathi AK, Mohanta PK, Singh K. A single institution 18-years retrospective analysis of malignant melanoma. Gulf J Oncolog 2015; 1:58-64. [PMID: 25682454] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/01/2014] [Indexed: 06/04/2023]
Abstract
UNLABELLED Melanoma accounts for about 2% of all cancer-related mortality in western populations. Surgical excision of localized disease is curative in many patients with 80% overall 5-year survival rate. There are many indicators of prognosis of which tumor burden is predicted by primary site with nodal status being the next most important variable. Patients with advanced stage have very high risk of developing distant metastases and should receive systemic therapy. Despite treatment, majority of locally advanced patients develop metastatic disease. MATERIALS AND METHODS A retrospective analysis of cases of malignant melanoma registered over a period of eighteen years, from October 1990 to September 2007 was done. Patient profile, presentation, disease load, treatment protocols and response on or after treatment were analyzed. RESULTS The median age at diagnosis in men was 48 years and 50 years in women. At presentation, more than half of studied cases (56.5%) presented with nodal metastases at diagnosis while about three fourths (74%) had distant metastases (stage IV disease). More than half (56%) of the patients had superficial spreading type. The most common presenting complaints were swelling (70% of patients), ulcer (50% of patients) or pain (50%). Primary sites included extremities, central nervous system, abdomen, trunk, and bones. Liver, brain, abdomen and lungs were common metastatic sites. Surgical excision of primary lesion was done in about half of the cases. Four patients subsequently received palliative radiotherapy and two more received adjuvant radiotherapy. Another six patients received adjuvant chemotherapy and radiotherapy. Among treated patients, 26% showed partial response and another 8% have stable disease while 65% patients progressed on or after initial treatment. CONCLUSION Malignant melanoma carries an overall poor prognosis especially in advanced stages. Multimodality therapy with surgery, radiotherapy and chemotherapy may provide local or nodal remission but cannot improve long term survival in advanced cases.
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Singh K, Stempora L, R. Donald H, Kirk AD, Larsen CP, Blazar BR, Kean LS. Superiority of rapamycin over tacrolimus in preserving nonhuman primate Treg half-life and phenotype after adoptive transfer. Am J Transplant 2014; 14:2691-703. [PMID: 25359003 PMCID: PMC4236286 DOI: 10.1111/ajt.12934] [Citation(s) in RCA: 56] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2014] [Revised: 05/22/2014] [Accepted: 06/05/2014] [Indexed: 01/25/2023]
Abstract
Many critical issues remain concerning how best to deploy adoptive regulatory T cell (Treg) immunotherapy to the clinic. These include a determination of their pharmacokinetic characteristics, their optimal dose, their phenotypic stability and the best therapies with which to pair Tregs. By performing a CFSE-labeled autologous Treg pulse experiment, we determined that the accessible peripheral blood Treg pool in rhesus macaques is quite large (75 ± 11 × 10(6) Tregs/kg). Pharmacokinetic analysis revealed that Tregs have two phases of elimination: an α phase, with a T1/2 in the peripheral blood of 32.4 ± 11.3 h and a β phase with a T1/2 of 120.4 ± 19.7 h. In addition to their short initial half-life, Tregs underwent rapid phenotypic shifts after infusion, with significant loss of both CD25 and FoxP3 by day +6. While tacrolimus stabilized CD25 expression, it did not improve T1/2 , nor mitigate the loss of FoxP3. In contrast, rapamycin significantly stabilized both CD25 and FoxP3, and supported an increased half-life, with an α phase of 67.7 ± 6.9 h and a β phase of 252.1 ± 54.9 h. These results suggest that rapamycin may be a necessary addition to Treg immunotherapy, and that tacrolimus may be deleterious to Treg integrity posttransfer.
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Murney R, Stelwagen K, Wheeler TT, Margerison JK, Singh K. The effects of milking frequency in early lactation on milk yield, mammary cell turnover, and secretory activity in grazing dairy cows. J Dairy Sci 2014; 98:305-11. [PMID: 25465535 DOI: 10.3168/jds.2014-8745] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2014] [Accepted: 10/08/2014] [Indexed: 11/19/2022]
Abstract
In dairy cows, short-term changes of milking frequency in early lactation have been shown to produce an immediate and a long-term effect on milk yield in stall-fed cows. The effect is controlled locally within mammary glands and could be a function of either secretory mammary epithelial cell number or activity. To resolve this and determine its applicability in other feed management systems, a unilateral milking frequency experiment was conducted with udder halves of 17 multiparous, pasture-fed dairy cows milked either 4 times (4×) or once a day (1×) for 14d from 5±2d in milk. Mean half-udder milk yield during the treatment period was higher from the 4× compared with 1× udder halves and continued to be higher until 200d in milk once returned to twice a day milking. Mammary biopsies were obtained on d 14 of treatment from both udder halves of 10 cows. Proliferation of mammary cells was higher in 4× udder halves compared with 1×, whereas no difference in apoptosis levels was detected. Abundance of αS1-casein, β-casein, α-lactalbumin, and β-lactoglobulin mRNA was higher in tissue samples from 4× udder halves compared with 1×, whereas lactoferrin mRNA abundance was lower in 4× udder halves. In summary, change in milking frequency during early lactation affects proliferation of mammary cells as well as expression of the major milk protein genes, which both contribute to the observed changes in milk yield during and after unilateral milking frequency treatment.
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Bittner R, Montgomery MA, Arregui E, Bansal V, Bingener J, Bisgaard T, Buhck H, Dudai M, Ferzli GS, Fitzgibbons RJ, Fortelny RH, Grimes KL, Klinge U, Köckerling F, Koeckerling F, Kumar S, Kukleta J, Lomanto D, Misra MC, Morales-Conde S, Reinpold W, Rosenberg J, Singh K, Timoney M, Weyhe D, Chowbey P. Update of guidelines on laparoscopic (TAPP) and endoscopic (TEP) treatment of inguinal hernia (International Endohernia Society). Surg Endosc 2014; 29:289-321. [PMID: 25398194 PMCID: PMC4293469 DOI: 10.1007/s00464-014-3917-8] [Citation(s) in RCA: 179] [Impact Index Per Article: 17.9] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/05/2014] [Accepted: 09/19/2014] [Indexed: 12/13/2022]
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Singh S, Trivedi R, Singh K, Kumar P, Shankar LR, Khushu S. Diffusion tensor tractography in hypothyroidism and its correlation with memory function. J Neuroendocrinol 2014; 26:825-33. [PMID: 25131823 DOI: 10.1111/jne.12193] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2013] [Revised: 08/01/2014] [Accepted: 08/12/2014] [Indexed: 11/30/2022]
Abstract
Diffusion tensor tractography (DTT) was performed to determine the microstructural changes in the white matter fibre tracts of hypothyroid patients compared to controls and to correlate these changes with memory dysfunction scores. DTT and Postgraduate Institute Memory Scale test were performed in eight hypothyroid patients and eight healthy controls. Diffusion tensor imaging (DTI) measures [fractional anisotropy (FA) and mean diffusivity (MD)] from all of the major cerebral tracts were calculated and a comparison was made between the patient group and controls. Pearson's correlation was performed between Memory Dysfunction score and DTI measures. Significant changes in DTI measures were observed in various white matter fibre tracts in hypothyroid patients compared to controls. In hypothyroid patients, an inverse correlation of Memory Dysfunction score with FA was observed in the right and left inferior fronto-occipital fasciculus, whereas a positive correlation with MD was observed in the right anterior thalamic radiation among all white matter tracts. These findings suggest that microstructural changes in white matter fibres may contribute to the underlying dysfunction in memory in hypothyroid patients.
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Wendel H, Singh K, Wolfe A, Zhong Y, Drewe P, Porco J, Pelletier J, Rätsch G. 558 RNA G-quadruplexes cause eIF4A-dependent oncogene translation in cancer. Eur J Cancer 2014. [DOI: 10.1016/s0959-8049(14)70684-7] [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]
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Singh K, Bhori M, Marar T. α-Tocopherol mediated amelioration of camptothecin-induced free radical damage to avert cardiotoxicities. Hum Exp Toxicol 2014; 34:380-9. [PMID: 25304969 DOI: 10.1177/0960327114533577] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Reactive oxygen species (ROS) such as O2(-), hydrogen peroxide, and OH(-) are highly toxic to cells. Cellular antioxidant enzymes and free radical scavengers normally protect a cell from toxic effects of ROS. However, when generation of ROS overtakes the antioxidant defense of the cells, it leads to various pathological conditions. The present study investigated the protective efficacy of α-tocopherol on the peroxidative damage and abnormal antioxidant levels in the myocardial tissue of camptothecin (CPT), administered at the dosage of 6 mg/kg/day in male Wistar rats. CPT-administered rats showed significant increase (p < 0.001) in lipid peroxidation and abnormal changes in the activities/levels of antioxidant enzymes (catalase, superoxide dismutase, glutathione peroxidase, glutathione reductase, glutathione S-transferase) and nonenzymic antioxidants (reduced glutathione and vitamin E). Alterations in the levels of tissue alkaline phosphatase, lactate dehydrogenase (p < 0.01), alanine transaminase (p < 0.001), and aspartate transaminase (p < 0.001) were also observed in CPT-treated rats. In contrast, rats pretreated with α-tocopherol showed significant revision of elevated levels of lipid peroxides and abnormal antioxidant enzyme activity suggesting the ameliorative property of vitamin E. Histopathological alterations in the heart tissue observed after CPT administration were also protected in animals that were pretreated with vitamin E. Based on our results, we conclude that supplementation of vitamin E may improve the efficacy of standard and experimental cancer therapies by subsiding the toxic effect of the antineoplastic agent.
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Jha PK, Pandey OP, Singh K. Crystallization and Glass Transition Kinetics of Na2s-P2s5-Based Super-Ionic Glasses. PARTICULATE SCIENCE AND TECHNOLOGY 2014. [DOI: 10.1080/02726351.2014.947661] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Reddy V, Parang B, Poindexter S, Barrett C, Bradley A, Harris E, Choksi Y, Mittal M, Singh K, Chaturvedi R, Brand T, Washington M, Bader D, Wilson K, Williams C. BVES Loss Is Protective in Radiation Enteritis. Int J Radiat Oncol Biol Phys 2014. [DOI: 10.1016/j.ijrobp.2014.05.2248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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214
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Mohsina A, Zama MMS, Tamilmahan P, Gugjoo M, Singh K, Gopinathan A, Gopi M, Karthik K. A retrospective study on incidence of lameness in domestic animals. Vet World 2014. [DOI: 10.14202/vetworld.2014.601-604] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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215
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Raghove P, Jaiswal R, Singh K. Evaluating the effect of preoperative oral gabapentin on postoperative pain in patients receiving spinal anaesthesia for lower limb surgery. SOUTHERN AFRICAN JOURNAL OF ANAESTHESIA AND ANALGESIA 2014. [DOI: 10.1080/22201173.2010.10872711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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216
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Singla G, Singh K, Pandey OP. Effect of Processing Variables on WC Nanoparticles Synthesized by Solvothermal Route. PARTICULATE SCIENCE AND TECHNOLOGY 2014. [DOI: 10.1080/02726351.2014.933147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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217
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Lamy A, Tong W, Jung H, Gafni A, Singh K, Tyrwhitt J, Yusuf S, Gerstein HC. Cost implications of the use of basal insulin glargine in people with early dysglycemia: the ORIGIN trial. J Diabetes Complications 2014; 28:553-8. [PMID: 24684774 DOI: 10.1016/j.jdiacomp.2014.02.012] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/27/2013] [Revised: 01/31/2014] [Accepted: 02/20/2014] [Indexed: 10/25/2022]
Abstract
AIMS The cost implications of the Outcome Reduction with an Initial Glargine Intervention (ORIGIN) trial were evaluated using a prespecified analysis plan. METHODS Purchasing power parity-adjusted country-specific costs were applied to consumed healthcare resources by participants from each country. Subgroup analyses were conducted on subgroups based on baseline metabolic status and diabetes duration. RESULTS The total undiscounted cost per participant in the insulin glargine arm was $13,491 ($13,080 to $14,254) versus $11,189 ($10,568 to $12,147) for standard care, an increase of $2303 ($1370 to $3235; p < 0.0001); the discounted increase was $2099 ($1276 to $2923; P < 0.0001). The greater number of mainly generic oral anti-diabetic agents in the standard group partially offset the higher cost of basal insulin glargine. As the trial progressed and the standard group required more anti-diabetic medications, the annual cost difference decreased, reaching $68 (-$160 to $295) in the last year. The subgroup whose baseline diabetes duration was ≥ 6 years achieved cost-savings during the trial. CONCLUSIONS From a global perspective basal insulin glargine use in ORIGIN incurred greater costs than standard care using older generic drugs. Nevertheless, the cost difference fell with time such that the intervention was cost-neutral by the last year.
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Jindal N, Singh K. Joint image compression–encryption using discrete fractional transforms. THE IMAGING SCIENCE JOURNAL 2014. [DOI: 10.1179/1743131x13y.0000000062] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
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219
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Kratochwill K, Boehm M, Herzog R, Kuster L, Gleiss A, Aufricht C, Vychytil A, Prasad N, Singh K, Prasad K, Gupta A, Bhadauria D, Perez J, Selgas R, Prieto M, Sanchez JA, Remon C, Latus J, Habib SM, Kitterer D, Korte M, Ulmer C, Fritz P, Davies S, Lambie M, Alscher MD, Betjes M, Segerer S, Braun N, Kitterer D, Latus J, Ulmer C, Alscher MD, Segerer S, Braun N, Herzog R, Gluxam T, Becker J, Vychytil A, Aufricht C, Kratochwill K. PERITONEAL DIALYSIS. Nephrol Dial Transplant 2014. [DOI: 10.1093/ndt/gfu114] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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220
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Singla G, Singh K. Effect of TiO2 on the photocatalytic properties of bismuth oxide. ENVIRONMENTAL TECHNOLOGY 2014; 35:1520-1524. [PMID: 24701951 DOI: 10.1080/09593330.2013.871583] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Bi2-xTixO3+x/2 (x = 0.05, 0.10 and 0.15) photocatalysts are prepared by solid-state technique. The band gap of the prepared sample was estimated from the onset of UV-Vis absorption spectra. The photocatalytic activities of as prepared samples are investigated under UV light irradiation for the decomposition of methyl orange (MO). It has been observed that the rate of decomposition of MO increased with increasing Ti4+ content in the present samples. Moreover, it shows better photocatalytic activity than undoped Bi2O3 and TiO2. The lowest band gap is observed for x = 0.15 sample, i.e. 2.55 eV, which also showed the highest photocatalytic activity in the present sample.
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Basu T, Paulose PL, Iyer KK, Singh K, Mohapatra N, Chowki S, Gonde B, Sampathkumaran EV. A reentrant phenomenon in magnetic and dielectric properties of Dy2BaNiO5 and an intriguing influence of external magnetic field. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:172202. [PMID: 24722401 DOI: 10.1088/0953-8984/26/17/172202] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report that the spin-chain compound Dy2BaNiO5, recently proven by us to exhibit magnetoelectric coupling below its Néel temperature (TN) of 58 K, exhibits strong frequency-dependent behavior in ac magnetic susceptibility and complex dielectric properties at low temperatures (<10 K), mimicking the 'reentrant' multiglass phenomenon. Such a behavior is not known among undoped compounds. A new finding in the field of multiferroics is that the characteristic magnetic feature at low temperatures moves towards higher temperatures in the presence of a magnetic field (H), whereas the corresponding dielectric feature shifts towards lower temperatures with H, unlike the situation near TN. This observation indicates that the alignment of spins by external magnetic fields tends to inhibit glassy-like slow electric-dipole dynamics, at least in this system, possibly arising from peculiarities in the magnetic structure.
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Bayyappa M, Singh R, Singh K, Patil S, Rahman H. Wild animal rabies in India: Possibility of species spill over. Int J Infect Dis 2014. [DOI: 10.1016/j.ijid.2014.03.812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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223
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Garg VK, Yadav A, Singh K, Singh M, Bishnoi M, Pulhani V. Uranium concentration in groundwater in Hisar city, India. THE INTERNATIONAL JOURNAL OF OCCUPATIONAL AND ENVIRONMENTAL MEDICINE 2014; 5:112-4. [PMID: 24748004 PMCID: PMC7767619] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/31/2013] [Accepted: 03/24/2014] [Indexed: 12/03/2022]
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Rana S, Sharma S, Prasad K, Sinha S, Singh K. Role of oxidative stress & antioxidant defence in ulcerative colitis patients from north India. Indian J Med Res 2014; 139:568-71. [PMID: 24927343 PMCID: PMC4078495] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022] Open
Abstract
BACKGROUND & OBJECTIVES Oxidative stress contributes to severity of ulcerative colitis (UC) but the status of erythrocyte antioxidant defence remains unknown. The present study was aimed to study the role of oxidative stress and antioxidant levels in erythrocytes of UC patients from north India. METHODS A total of 81 adult UC patients and 85 age and sex matched apparently healthy controls were included in this study. Levels of lipid peroxidation (LPO), reduced glutathione (GSH), catalase and superoxide dismutase (SOD) were measured in erythrocytes. RESULTS Mean age of UC patients was 43.5 yr (range 18-64 yr) while in the control group this was 45.3 yr (range 20-64 yr). LPO, catalase and SOD levels in UC patients were significantly increased (P< 0.05) compared to healthy controls, while GSH levels in UC patients were significantly decreased (P< 0.05) compared to healthy controls Ulcerative colitis activity score (UCAI) was 157.4±27.6 in UC patients. INTERPRETATION & CONCLUSIONS Increased levels of LPO, SOD, catalase and a decreased level of GSH represent that oxidative stress plays a significant role in pathophysiology of UC. Further, the levels of LPO, GSH, catalase and SOD remained same during different UCAI.
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Mohapatra T, Robin S, Sarla N, Sheshasayee M, Singh AK, Singh K, Singh NK, Amitha Mithra SV, Sharma RP. EMS Induced Mutants of Upland Rice Variety Nagina22: Generation and Characterization. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2014. [DOI: 10.16943/ptinsa/2014/v80i1/55094] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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226
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Basha J, Appasani S, Vaiphei K, Gupta V, Singh K, Kochhar R. Biodegradable stents: truly biodegradable with good tissue harmony. Endoscopy 2014; 45 Suppl 2 UCTN:E116-7. [PMID: 23716086 DOI: 10.1055/s-0032-1326111] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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227
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Barbosa DTQ, Mendes TS, Cíntron-Colon HR, Wang SY, Bhisitkul RB, Singh K, Lin SC. Age-related macular degeneration and protective effect of HMG Co-A reductase inhibitors (statins): results from the National Health and Nutrition Examination Survey 2005-2008. Eye (Lond) 2014; 28:472-80. [PMID: 24503725 DOI: 10.1038/eye.2014.8] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2013] [Accepted: 01/02/2014] [Indexed: 12/31/2022] Open
Abstract
PURPOSE To determine the association of hydroxymethylglutarylcoenzyme A (HMG Co-A) reductase inhibitor (statin) use with the prevalence of age-related macular degeneration (AMD). METHODS This cross-sectional study included 5604 participants in the National Health and Nutrition Examination Survey (NHANES) from 2005 to 2008, ≥ 40 years of age, who were ascertained with regard to the diagnosis of AMD, the use of statins, and comorbidities and health-related behaviors such as smoking. RESULTS The mean age of participants denying or confirming a history of AMD was 68 (SEM 0.90) and 55 (SEM 0.36) years, respectively. Individuals 68 years of age or older who were classified as long-term users of statins had statistically significant less self-reported AMD (odds ratio (OR) 0.64, 95% confidence interval (CI) 0.49-0.84; P=0.002), after adjusting for potential confounding variables. No significant association was found between the prevalence of AMD and statin consumption among subjects between 40 and 67 years of age (OR 1.61, 95% CI 0.85-3.03; P=0.137). CONCLUSIONS Our results suggest a possible beneficial effect of statin intake for the prevention of AMD in individuals 68 years of age or older.
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Bekerat H, Devic S, DeBlois F, Singh K, Sarfehnia A, Seuntjens J, Shih S, Yu X, Lewis D. Improving the energy response of external beam therapy (EBT) GafChromicTM
dosimetry films at low energies (≤100 keV). Med Phys 2014; 41:022101. [DOI: 10.1118/1.4860157] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022] Open
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Chaudhary SC, Sawlani KK, Atam V, Parihar A, Modi A, Singh K. Heart in the brain. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2014; 62:46-47. [PMID: 25327092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/04/2023]
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230
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Singh K, Shi B, Bloomfield S, Furniss G, Jimenez A, Harding S, Larsen P. Factors contributing to failure to achieve a 10J safety margin in implantable cardioverter defibrillator testing. Heart Lung Circ 2014. [DOI: 10.1016/j.hlc.2014.04.143] [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]
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231
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Sahai P, Mohanta P, Bahadur A, Daga M, Rathi A, Singh K. EP-1158: A randomized comparison of two schedules of hypofractionated radiotherapy for palliation of symptoms from NSCLC. Radiother Oncol 2014. [DOI: 10.1016/s0167-8140(15)31276-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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232
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Jaiswal D, Trivedi S, Agrawal NK, Singh K. Association of the gonadotrophin-regulated testicular RNA helicase gene polymorphism with human male infertility. Andrologia 2013; 46:1063-6. [PMID: 24168058 DOI: 10.1111/and.12185] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/12/2013] [Indexed: 11/30/2022] Open
Abstract
Gonadotrophin-regulated testicular RNA helicase (GRTH) plays an important role in RNA functions including nuclear transcription, pre-mRNA splicing and it regulates the translation of specific genes required for the progression of spermatogenesis. In this study, we analysed the association of GRTH gene IVS6+55G/T and c.852C/T polymorphisms with human male infertility. The study showed c.852 T allele was associated with an increased risk of male infertility (OR: 3.16, P = 0.008), whereas IVS6+55G/T allele conferred no risk. In Indian population, this is the first report on association of GRTH gene SNP polymorphism and male infertility and it underscores the significance of GRTH genotypes in modulating the risk of male infertility.
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Thakur S, Pandey OP, Singh K. Structural, Thermal and Electrical Study of Ca2+, Sr2+ Substituted BiFeO3 for IT-SOFC. ACTA ACUST UNITED AC 2013. [DOI: 10.1149/05701.2125ecst] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Singh K, Shukla P, Quan A, Lovren F, Pan Y, Wagg C, Teoh H, Lopaschuk G, Verma S. Regulating Cardiac Energy Metabolism and Bioenergetics by Targeting the DNA Damage Repair Protein BRCA1. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
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235
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Ehsan M, Lovren F, Quan A, Pan Y, Singh K, Ramadan A, Wheatcroft M, Teoh H, Verma S. Adiponectin Limits Microparticle-Induced Endothelial Dysfunction. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.610] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022] Open
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236
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Ramadan A, Singh K, Quan A, Lovren F, Pan Y, Ehsan M, Teoh H, Wheatcroft M, Verma S. An Essential Role of Autophagy in Vascular Smooth Muscle Cell Homeostasis. Can J Cardiol 2013. [DOI: 10.1016/j.cjca.2013.07.650] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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237
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Dhabhai R, Chaurasia SP, Singh K, Dalai AK. Kinetics of Bioethanol Production Employing Mono- and Co-Cultures ofSaccharomyces cerevisiaeandPichia stipitis. Chem Eng Technol 2013. [DOI: 10.1002/ceat.201300092] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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238
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Rana SV, Sharma S, Sinha SK, Parsad KK, Malik A, Singh K. Pro-inflammatory and anti-inflammatory cytokine response in diarrhoea-predominant irritable bowel syndrome patients. ACTA ACUST UNITED AC 2013; 33:251-6. [PMID: 23923350 DOI: 10.7869/tg.2012.66] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND AND AIM Irritable bowel syndrome (IBS) is referred to as a functional bowel disorder which is diagnosed by a number of characteristic symptoms (Rome II criteria) in the absence of detectable structural abnormalities. Low-grade inflammation of the intestine may be one of the reasons for development of diarrhoea-predominant IBS (IBS-D). We undertook this study to estimate the serum levels of pro-inflammatory (IL-6, TNF-alpha) and anti-inflammatory (IL-10) cytokines in IBS-D patients. METHODS A total of 108 diarrhoea patients were screened. Out of these only 63 adult IBS-D patients were enrolled. Age and sex matched 62 apparently healthy controls with no GI symptoms were also recruited. Out of 63 IBS-D patients, 37 were males while there were 32 males among the controls. The patients with IBS-D were diagnosed according to the Rome II criteria. Levels of serum IL-6, TNF-alpha and IL-10 were measured in all subjects using ELISA. RESULTS Mean (+/- SD) age of IBS-D patients (42.6 +/- 19.5 years) was comparable (p = 0.64) to that of controls (43.5 +/- 18.7 years). The mean (+/- SD) levels of IL-6 in IBS-D patients (32.2 +/- 12.01 pg/ml) was significantly higher (p < 0.001) than in controls (7.48 +/- 2.55 pg/ml). The levels of TNF-alpha in IBS-D patients (16.3 +/- 5.2 pg/ml) were also significantly higher (p < 0.05) than in controls (7.94 +/- 2.19 pg/ml). There was no significant difference in the serum levels of IL-10 (p = 0.23) between IBS-D patients (5.75 +/- 2.1 pg/ml) and controls (5.84 +/- 1.9 pg/ml). CONCLUSION Our results indicate that mild inflammation is involved in IBS-D patients as proinflammatory cytokines were increased although no difference in anti-inflammatory cytokine was observed.
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Nair R, Khanna A, Singh K. Role of inflammatory proteins S100A8 and S100A9 in pathophysiology of recurrent early pregnancy loss. Placenta 2013; 34:824-7. [DOI: 10.1016/j.placenta.2013.06.307] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/29/2013] [Revised: 06/23/2013] [Accepted: 06/25/2013] [Indexed: 11/30/2022]
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Rana SV, Sharma S, Malik A, Kaur J, Prasad KK, Sinha SK, Singh K. Small intestinal bacterial overgrowth and orocecal transit time in patients of inflammatory bowel disease. Dig Dis Sci 2013; 58:2594-8. [PMID: 23649377 DOI: 10.1007/s10620-013-2694-x] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/23/2012] [Accepted: 04/18/2013] [Indexed: 12/15/2022]
Abstract
BACKGROUND Inflammatory bowel disease (IBD) consists of Ulcerative colitis (UC) and Crohn's disease (CD). These two conditions share many common features-diarrhea, bloody stools, weight loss, abdominal pain, fever and fatigue. Small intestinal bacterial overgrowth (SIBO) is frequent in patients with CD but it has not been studied in UC Indian patients. AIM The study was planned to measure orocecal transit time (OCTT) and SIBO in UC and CD patients. METHODS One hundred thirty-seven patients of IBD (95 UC and 42 CD) and 115 healthy controls were enrolled. OCTT and SIBO were measured by lactulose and glucose hydrogen breath test respectively. Concentration of hydrogen and methane were measured by SC microlyser from Quintron, USA. RESULTS Mean±standard deviation (SD) of OCTT in patients of IBD was significantly higher as compared to controls. Furthermore, OCTT was significantly higher in CD patients as compared to UC patients. It was also observed that occurrence of SIBO was significantly higher in IBD patients as compared to controls. The occurrence of SIBO in CD (45.2%) was significantly higher as compared to patients in UC (17.8%) group. Percentage of methane positive IBD patients (2.9%) was significantly lower as compared to methane positive controls (24.4%). CONCLUSION OCTT was significantly delayed in IBD patients as compared to controls and in CD patients as compared to UC patients. OCTT was significantly higher in SIBO positive IBD patients as compared to SIBO negative patients. Thus, we can suggest that delayed OCTT would have been the cause of increased SIBO in these patients.
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Abstract
Hair dye containing paraphenylenediamine (PPD) is widely used in India because of its free availability and low cost. PPD produces local as well as systemic toxic effects when applied topically and/or ingested. It is highly toxic when taken by mouth and the outcome depends mainly on the dose taken. Important clinical manifestations are angioedema leading to dysphasia and respiratory distress, rhabdomyolysis, intravascular hemolysis, acute renal failure and hepatic necrosis. Myocarditis or fatal arrhythmia may also occur in PPD poisoning. Mainstay of management is early recognition and supportive measures as there is no specific antidote. We hereby report a young female who presented to us with features of angioedema, cardiac manifestation and hepatic dysfunction after ingesting PPD, which was treated successfully. In the absence of laboratory facilities, clinical features like angioedema and chocolate brown-colored urine could be suggestive of PPD poisoning.
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Nguyen TH, Neil C, Singh K, Heresztyn T, Chirkov Y, Horowitz J. Determinants of prolonged impairment of global longitudinal strain post Takotsubo cardiomyopathy. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p4247] [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: 11/12/2022] Open
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Raman B, Singh K, Neil C, Nguyen TH, Stansborough J, Zietz C, Horowitz JD. Not such a rarity: takotsubo cardiomyopathy as a mimic of ST elevation myocardial infarction. Eur Heart J 2013. [DOI: 10.1093/eurheartj/eht309.p3001] [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: 11/14/2022] Open
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244
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Sharma G, Singh K, Ibrahim A, Al-Naib I, Morandotti R, Vidal F, Ozaki T. Self-referenced spectral domain interferometry for improved signal-to-noise measurement of terahertz radiation. OPTICS LETTERS 2013; 38:2705-2707. [PMID: 23903117 DOI: 10.1364/ol.38.002705] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
In this work, we demonstrate self-referenced spectral domain interferometry for the electro-optic sampling of terahertz (THz) electric fields. This technique allows reduction of the phase noise of the measurement, thus increasing the signal-to-noise ratio (SNR). Using the proposed technique, we achieve a more than sixfold improvement in the SNR of the detected THz electric field.
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Singh K, Parsaik A, Singh B. Recurrent takotsubo cardiomyopathy : variable pattern of ventricular involvement. Herz 2013; 39:963-7. [PMID: 23880950 DOI: 10.1007/s00059-013-3896-x] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Revised: 06/23/2013] [Accepted: 06/24/2013] [Indexed: 11/27/2022]
Abstract
BACKGROUND Takotsubo cardiomyopathy (TTC) is a transient left ventricular (LV) dysfunction that predominantly affects older women and has three main variants: apical, mid-ventricular, and basal. The recurrence rate of TTC is roughly around 11 % at 4-year follow-up. The pathogenesis of TTC is not clear and various theories have been proposed without concrete evidence. CASE SERIES We present a case series of 3 patients with recurrent TTC involving a different region of the ventricle during recurrence. All the patients presented with acute coronary syndrome (ACS) during the initial and recurrent episode. At the initial presentation, all the patients underwent selective coronary angiography (CA), transthoracic echocardiography (TTE), and cardiac magnetic resonance imaging (CMR) evaluation. However, the recurrent episodes were diagnosed without the need of CA, except in 1 patient who presented with ST-segment elevation myocardial infarction. CONCLUSION Recurrence of TTC is common and can be diagnosed without CA in some cases. During recurrence, the regional involvement of the left ventricle can vary in the same person. Variable regional involvement in the same patient rules out some of the proposed theories on the pathogenesis such as: beta-receptor gradient, wrap-around left anterior descending, and coronary artery spasm.
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Rana SV, Kamboj JK, Sharma SK, Ola RP, Sinha SK, Singh K. Antioxidant status and GST gene polymorphisms in antitubercular treatment-induced hepatotoxicity patients. Hepatol Int 2013. [DOI: 10.1007/s12072-013-9452-1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Gupta N, Goswami M, Singh K. Bilateral radix entomolaris with primary and permanent mandibular first molars. CASE REPORTS 2013; 2013:bcr-2013-200018. [DOI: 10.1136/bcr-2013-200018] [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] Open
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248
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Singh K, Tipton CR, Han E, Mullin T. Magneto-elastic buckling of an Euler beam. Proc Math Phys Eng Sci 2013. [DOI: 10.1098/rspa.2013.0111] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
We consider nonlinear elastic deformations of a magneto-elastic beam, using a combined experimental and theoretical approach. In the experiments, a beam had one end clamped with a magnet attached at its free end. When it was placed in an external magnetic field, it was susceptible to Euler beam buckling. However, the classic supercritical bifurcation associated with this buckling became subcritical when an attracting magnet was introduced in close proximity to the beam. To understand these experiments, we develop a model that couples the Euler elastica and dipole magnetic interactions with a uniform external field. The numerical model captures the observed behaviour well and shows that the supercritical magnetic field strength depends almost exclusively on elastic properties of the beam and strength of the permanent magnet, whereas the subcritical behaviour also depends on the separation distance between the attracting pair of magnets. We examine the bifurcation behaviour of the nonlinear system and show that for sufficiently small inter-magnet separation distances, other buckled states coexist with the fundamental mode.
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Singh K, Badgaiyan N, Ranjan A, Dixit HO, Kaushik A, Kushwaha KP, Aguayo VM. Management of children with severe acute malnutrition: experience of Nutrition Rehabilitation Centers in Uttar Pradesh, India. Indian Pediatr 2013; 51:21-5. [PMID: 24277964 DOI: 10.1007/s13312-014-0328-9] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/27/2012] [Accepted: 08/14/2013] [Indexed: 10/25/2022]
Abstract
OBJECTIVE To assess the effectiveness of facility-based care for children with severe acute malnutrition (SAM) in Nutrition Rehabilitation Centers (NRC). DESIGN Review of data. SETTING 12 NRCs in Uttar Pradesh, India. PARTICIPANTS Children admitted to NRCs (Jan 1, 2010 - Dec 31, 2011). INTERVENTION Detection and treatment of SAM with locally-adapted protocols. OUTCOMES Survival, default, discharge, and recovery rates. RESULTS 54.6% of the total 1,229 children admitted were boys, 81.6% were in the age group 6-23 months old, 86% belonged to scheduled tribes, scheduled castes, or other backward castes, and 42% had edema or medical complications. Of the 1,181 program exits, 14 (1.2%) children died, 657 (47.2%) children defaulted, and 610 (51.7%) children were discharged The average (SD) weight gain was 12.1 (7.3)g/kg body weight/day and the average (SD) length of stay was 13.2 (5.6) days. 206 (46.8%) children were discharged after recovery (weight gain >15%) while 324 (53.2%) were discharged, non-recovered (weight gain <15%). CONCLUSIONS NRCs provide life-saving care for children with SAM; however, the protocols and therapeutic foods currently used need to be improved to ensure the full recovery of all children admitted.
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Abstract
Tuberculosis of pituitary gland is rare. We report a case of tuberculosis of pituitary gland in a 68-year-old male presented with holocranial headache of four months duration with left temporal hemianopia, with visual acuity of 6/6, without any localizing sign. Magnetic resonance imaging showed a sellar ring enhancing mass with suprasellar extension. Patient was taken up for surgery and put on antitubercular treatment and hormone replacement therapy.
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