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Vivekananda KV, Dey S, Maity DK, Bhuvanesh N, Jain VK. Supramolecular Macrocyclic Pd(II) and Pt(II) Squares and Rectangles with Aryldithiolate Ligands and their Excellent Catalytic Activity in Suzuki C-C Coupling Reaction. Inorg Chem 2015; 54:10153-62. [PMID: 26444245 DOI: 10.1021/acs.inorgchem.5b00806] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Addition of 1,4-benezenedithiol and 4,4'-biphenyldithiol to M(OTf)2 (M = cis-[Pt(PEt3)2](2+) or cis-[Pd(dppe)](2+)) (dppe = 1,2-bis(diphenylphosphino)ethane) gave self-assembled tetranuclear complexes [M2{S(C6H4)nS}]2(OTf)4 (n = 1, 2). The same reaction with 1,4-benezenedimethanethiol yielded octanuclear supramolecular coordination complexes (SCC) [M2{SCH2C6H4CH2S}]4(OTf)8. These complexes were characterized by NMR, mass, and UV-vis spectroscopies, cyclic voltammetry, as well as density functional theory studies and represent the first examples of SCCs constructed by thiolate groups and square-planar metal ions. The rectangular shape of tetranuclear complexes and square shape of octanuclear complex are confirmed by single-crystal structures and computational studies. The palladium complexes showed excellent catalytic activity in Suzuki C-C cross-coupling reactions with high turnover numbers (2 × 10(7)), even with low catalyst loading.
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Roy J, Chakraborty D, Dey S. Embolic stroke of unknown source (ESUS) as a subset of cryptogenic stroke: experience from a stroke centre in Eastern India. J Neurol Sci 2015. [DOI: 10.1016/j.jns.2015.08.1439] [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]
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228
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Dey S, Bhattacharya D, Roy S, Nadgir SD, Patil A, Kholkute SD. Shewanella algae in acute gastroenteritis. Indian J Med Microbiol 2015; 33:172-5. [PMID: 25560029 DOI: 10.4103/0255-0857.148442] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Shewanella algae is an emerging bacteria rarely implicated as a human pathogen. Previously reported cases of S. algae have mainly been associated with direct contact with seawater. Here we report the isolation of S. algae as the sole etiological agent from a patient suffering from acute gastroenteritis with bloody diarrhoea. The bacterium was identified by automated identification system and 16S rRNA gene sequence analysis. Our report highlights the importance of looking for the relatively rare aetiological agents in clinical samples that does not yield common pathogens. It also underscores the usefulness of automated systems in identification of rare pathogens.
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229
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Murmu S, Debnath C, Pramanik AK, Mitra T, Jana S, Dey S, Banerjee S, Batabyal K. Detection and characterization of zoonotic dermatophytes from dogs and cats in and around Kolkata. Vet World 2015; 8:1078-82. [PMID: 27047202 PMCID: PMC4774776 DOI: 10.14202/vetworld.2015.1078-1082] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2015] [Revised: 08/06/2015] [Accepted: 08/14/2015] [Indexed: 01/04/2023] Open
Abstract
AIM The ringworms of pet dogs, cats, and stray animals (dogs, cats, and other animals) could be a potential source of zoonotic infections causing a serious public health problem in the busy city Kolkata. The pet owners are more susceptible to get this infection from their pets, because of the close contact with them as dermatophytosis is very much prevalent in those pets. So, this study was aimed to check the prevalence of dermatophytosis in dogs, cats, and in pet owners. MATERIALS AND METHODS A total of 362 clinically suspected cases of dermatophytosis from dogs (123 in number), cats (202 in number), and human beings (37 in number) were collected and studied from in and around Kolkata to detect the presence of significant dermatophytes. Direct microscopy and cultural examination of the isolates were performed following standard methodology. Identification and characterization of the isolates were done by different biochemical tests. RESULTS Samples (n=285) having significant dermatophytic fungal infections were found to be of highest number in cats (158, 55.5%) than in dogs (108, 37.8%) and humans (19, 6.7%), respectively. The incidence of Microsporum canis (60.0%) was the highest from affecting dogs, cats, and human beings in comparison to Microsporum gypseum (22.5%), Trichophyton mentagrophytes (15.8%) and Trichophyton rubrum (1.7%). Detection of T. rubrum was only from human cases in this study, whereas the presence of rest three were slightly higher in cats than that of the dogs and humans in this present study. The incidences were higher in young animals and in humans of the age group of 21-30 years, during the rainy season (from April to August) and also in in-contact human beings. CONCLUSION M. canis was the most commonly pathogen among all causing dermatophytosis in animals and also in the pet owners. M. gypseum and T. mentagrophytes were other pathogens associated with these infections. These infections were more prevalent in the rainy seasons and in in-contact human patients or pet owners.
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230
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Bakshi L, Begum HA, Khan I, Dey SK, Bhattacharjee M, Bakshi MK, Dey S, Habib A, Barman KK. Comparative Study of Clinical and Sonographic Estimation of Foetal Weight at Term. Mymensingh Med J 2015; 24:572-577. [PMID: 26329957] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
A cross sectional comparative study was conducted at Dhaka National Medical College, Dhaka from January to June 2012, to observe the accuracy of clinical and ultrasonographic estimation of foetal weight at term in our environment. Seventy five pregnant women who fulfilled the inclusion criteria had their foetal weight estimated independently using clinical and ultrasonographic methods. Accuracy was determined by percentage error, absolute percentage error and proportion of estimates within 10% of actual birth weight (birth weight fetus of +10%). Statistical analysis was done using the paired t-test, the Wilcoxon signed-rank test, and the chi-square test. The study sample had an actual average birth weight of 2989.60 ± 408.76 (range 2310-4000 gm). Overall, the clinical method overestimated birth-weight, while ultrasound underestimated it. The mean absolute percentage error of the clinical method was more than that of the sonographic method, and the number of estimates within 10% of actual birth weight for the clinical method (41.3%) was less than for the sonographic method (57.3%); the difference was not statistically significant. In the low birth-weight (<2,500 gm) group, the mean absolute percentage error of sonographic estimates were significantly smaller. Significantly more sonographic estimates (75%) were within 10% of actual birth-weight than those of the clinical method (0%). No statistically significant difference was observed in all the measures of accuracy for the normal birth-weight range of 2,500-<4,000 gm and in the macrosomic group (≥ 4,000 gm). Clinical estimation of birth-weight is as accurate as routine ultrasonographic estimation, except in low-birth-weight babies.
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231
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Ghosh P, Mandal A, Dey S, Pal C. Synthesis and in vitro Screening of 29, 30-Dibromo-28-oxoallobetulin against Parasitic Protozoans, Leishmania donovani and Leishmania Major. Indian J Pharm Sci 2015; 77:202-7. [PMID: 26009654 PMCID: PMC4442470 DOI: 10.4103/0250-474x.156596] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2013] [Revised: 11/18/2014] [Accepted: 03/30/2015] [Indexed: 01/18/2023] Open
Abstract
A simple synthesis and in vitro antileishmanial activity of 29,30-dibromo-28-oxoallobetulin against the parasitic protozoans, Leishmania donovani and Leishmania major is described. The structure of the compound is established on the basis of spectral data (IR, NMR, MS). Both the antiproliferative effect and the cell cycle progression were studied.
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232
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Dey S, Aich N, Mitra S, Chaudhuri C, Ghosh P, Ray B. A study of the repumping laser and external magnetic field effect on coherent absorption resonance in alkali vapour. Chem Phys Lett 2015. [DOI: 10.1016/j.cplett.2015.03.044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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233
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Chakraborty AA, Scuoppo C, Dey S, Thomas LR, Lorey SL, Lowe SW, Tansey WP. A common functional consequence of tumor-derived mutations within c-MYC. Oncogene 2015; 34:2406-9. [PMID: 24998853 PMCID: PMC4286529 DOI: 10.1038/onc.2014.186] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/06/2014] [Accepted: 05/06/2014] [Indexed: 11/09/2022]
Abstract
The relevance of changes to the coding sequence of the c-MYC oncogene to malignancy is controversial. Overexpression of a pristine form of MYC is observed in many cancers and is sufficient to drive tumorigenesis in most contexts. Yet missense changes to MYC are found in ~50% of Burkitt's lymphomas, aggregate within an amino-terminal degron important for proteasomal destruction of MYC, and where examined profoundly enhance the tumorigenic properties of MYC in vitro and in vivo. Much of the controversy surrounding these mutants stems from the limited number of mutations that have been evaluated and their clustering within a single region of the MYC protein; the highly-conserved Myc box I (MbI) element. Here, by analysis of extant genomic data sets, we identify a previously unrecognized hotspot for tumor-associated MYC mutations, located in a conserved central portion of the protein. We show that, despite their distal location in MYC, mutations in this region precisely phenocopy those in MbI in terms of stability, in vitro transformation, growth-promoting properties, in vivo tumorigenesis and ability to escape p53-dependent tumor surveillance mechanisms. The striking parallels between the behavior of tumor-derived mutations in disparate regions of the MYC protein reveals that a common molecular process is disrupted by these mutations, implying an active role for these mutations in tumorigenesis and suggesting that different therapeutic strategies may be needed for treatment of lymphomas expressing wild type versus mutant forms of MYC protein.
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234
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Karve SM, Daniel S, Chavhan YD, Anand A, Kharola SS, Dey S. Escherichia coli populations in unpredictably fluctuating environments evolve to face novel stresses through enhanced efflux activity. J Evol Biol 2015; 28:1131-43. [PMID: 25865653 DOI: 10.1111/jeb.12640] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2014] [Accepted: 04/07/2015] [Indexed: 12/12/2022]
Abstract
There is considerable understanding about how laboratory populations respond to predictable (constant or deteriorating environment) selection for single environmental variables such as temperature or pH. However, such insights may not apply when selection environments comprise multiple variables that fluctuate unpredictably, as is common in nature. To address this issue, we grew replicate laboratory populations of Escherichia coli in nutrient broth whose pH and concentrations of salt (NaCl) and hydrogen peroxide (H2 O2 ) were randomly changed daily. After ~170 generations, the fitness of the selected populations had not increased in any of the three selection environments. However, these selected populations had significantly greater fitness in four novel environments which have no known fitness-correlation with tolerance to pH, NaCl or H2 O2 . Interestingly, contrary to expectations, hypermutators did not evolve. Instead, the selected populations evolved an increased ability for energy-dependent efflux activity that might enable them to throw out toxins, including antibiotics, from the cell at a faster rate. This provides an alternate mechanism for how evolvability can evolve in bacteria and potentially lead to broad-spectrum antibiotic resistance, even in the absence of prior antibiotic exposure. Given that environmental variability is increasing in nature, this might have serious consequences for public health.
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235
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Pradhan D, Dey S, Bhattacharyyaa P. A Case of Successful Management of Guillain-Barre Syndrome in Pregnancy. JNMA J Nepal Med Assoc 2015; 53:134-136. [PMID: 26994036] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2023] Open
Abstract
Guillain-Barre´ syndrome complicating pregnancy is a rare event which carries a high maternal risk. We presented a case of 23 years old pregnant lady diagnosed with GBS in third trimester who deteriorated after termination of delivery of the new born. Despite the availability of intravenous immunoglobulin and plasmapheresis and complications like ventilator associated pneumonia, tracheostomy, autonomic instability, patient was successfully managed due to a meticulous multidisciplinary involvement in our intensive care unit.
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236
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Manna K, Das U, Das D, Kesh SB, Khan A, Chakraborty A, Dey S. Naringin inhibits gamma radiation-induced oxidative DNA damage and inflammation, by modulating p53 and NF-κB signaling pathways in murine splenocytes. Free Radic Res 2015; 49:422-39. [DOI: 10.3109/10715762.2015.1016018] [Citation(s) in RCA: 41] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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237
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Dey S. Characterization of polyethylene terephthalate (PET) detector to search for rare events in cosmic rays. PROCEEDINGS OF THE INDIAN NATIONAL SCIENCE ACADEMY 2015. [DOI: 10.16943/ptinsa/2015/v81i1/48075] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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238
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Gill K, Kumar S, Xess I, Dey S. Novel synthetic anti-fungal tripeptide effective against Candida krusei. Indian J Med Microbiol 2015; 33:110-6. [DOI: 10.4103/0255-0857.148404] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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239
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Dey S, Gomes R, Mondal R, Dey SK, Dasgupta P, Poddar A, Reddy VR, Bhaumik A, Kumar S. Stable room temperature magnetic ordering and excellent catalytic activity of mechanically activated high surface area nanosized Ni0.45Zn0.55Fe2O4. RSC Adv 2015. [DOI: 10.1039/c5ra14773e] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Mechanosynthesized nanometric Ni0.45Zn0.55Fe2O4 exhibit stable magnetic ordering at room temperature, excellent catalytic property and memory effect in dc magnetization profile.
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240
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Majumder S, Dey S, Bagani K, Dey SK, Banerjee S, Kumar S. A comparative study on the structural, optical and magnetic properties of Fe3O4 and Fe3O4@SiO2 core–shell microspheres along with an assessment of their potentiality as electrochemical double layer capacitors. Dalton Trans 2015; 44:7190-202. [DOI: 10.1039/c4dt02551b] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Study on magnetic and hyperfine properties of Fe3O4 and Fe3O4@SiO2 microspheres. Both can be used as EDLC.
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241
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Behera B, Dey S, Sharma V, Pal K. Rheological and Viscoelastic Properties of Novel Sunflower Oil-Span 40-Biopolymer-Based Bigels and Their Role as a Functional Material in the Delivery of Antimicrobial Agents. ADVANCES IN POLYMER TECHNOLOGY 2014. [DOI: 10.1002/adv.21488] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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242
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Chakraborty S, Bhatia A, Dey S. Diagnostic dilemma in a case of a leech in the upper aerodigestive tract. J Postgrad Med 2014; 61:53-4. [PMID: 25511223 PMCID: PMC4944372 DOI: 10.4103/0022-3859.147056] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022] Open
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243
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Mathur M, Singh A, Dhillon P, Dey S, Sullivan R, Jain K, Arora M, Patel T, Prabhakaran D, Rajaraman P. Strategies for cancer prevention in India—Catching the ‘low hanging fruits’. J Cancer Policy 2014. [DOI: 10.1016/j.jcpo.2014.07.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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244
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Nabi SU, Wani AR, Shah OS, Dey S. Association of periodontitis and chronic kidney disease in dogs. Vet World 2014. [DOI: 10.14202/vetworld.2014.403-407] [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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245
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Manorama M, Ramanujam SN, Dey S. Scanning Electron Microscopy of Some Vital Structures of Puntius shalynius Yazdani and Talukdar 1975, an Endemic Hill-Stream Fish of North East India. ACTA ACUST UNITED AC 2014. [DOI: 10.1166/jamr.2014.1181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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246
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John B, Dey S, Jacob J, Raghavan V. The prognostic value of T peak - T end interval on the surface ECG in patients undergoing reperfusion therapy for STEMI. Heart Lung Circ 2014. [DOI: 10.1016/j.hlc.2014.04.156] [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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247
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Nabi S, Wani A, Dey S. Radiographic measurements (vertebral heart scale) of popular breeds of dogs in India. APPLIED BIOLOGICAL RESEARCH 2014. [DOI: 10.5958/0974-4517.2014.00017.2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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248
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Gupta A, Dey S, Saini M, Swarup D. Down-regulation of expression of type 1 collagen gene in dentin of fluoride exposed rats. INDIAN J ANIM RES 2014. [DOI: 10.5958/0976-0555.2014.00039.9] [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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249
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Nabi S, Wani A, Dey S. Therapeutic effect of ashwagandha ( Withania somniferaL.) in liver dysfunction of old dogs. APPLIED BIOLOGICAL RESEARCH 2014. [DOI: 10.5958/0974-4517.2014.00015.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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250
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Gugjoo MB, Hoque M, Saxena AC, Shamsuz Zama MM, Dey S. Reference values of M-mode echocardiographic parameters and indices in conscious Labrador Retriever dogs. IRANIAN JOURNAL OF VETERINARY RESEARCH 2014; 15:341-346. [PMID: 27175128 PMCID: PMC4789210] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Received: 08/25/2013] [Revised: 12/07/2013] [Accepted: 01/26/2014] [Indexed: 06/05/2023]
Abstract
Breed-wise standard echocardiographic values in dogs have been reported as there is variation in body and chest conformation which limits the application of data of one breed for other breed. Labrador Retrievers being originated from hunting dogs, might have different echocardiographic values from standard normal range of other dog breeds. So, the present study was aimed to determine the M-mode echocardiographic reference ranges in Labrador Retriever dogs and to evaluate the effect of body weight and gender on these parameters. The data obtained were also compared with that of the other dog breeds. Conscious clinically healthy Labrador Retriever dogs (n=24) of both sexes were made the subject of the study. All the measurements were made from a right parasternal long axis left ventricular outflow tract view and the parameters measured were: left ventricular dimensions, left ventricular function, left ventricular volumes, left atrial and aortic root diameter and mitral valve parameters. Data obtained were also compared with that available for other dog breeds. Significant correlation (P<0.05) with body weight was obtained for some of the left ventricular, atrial and mitral valve parameters, being strong for LAD, AOD, LVIDd, LVIDs, IVSd and IVSs (r>0.5); moderate for LVPWd, LVPWs, EPSS, EF Slope and SV (r=0.3 to 0.5); weak for EDV and ESV (r<0.3). Non-significant effect of gender was seen on all the echocardiographic parameters. However, some of the parameters had a significant breed effect. It is expected that the obtained data will be valuable for the progress of studies on small animal cardiology.
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