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Bhattacharya S, Biswas B, Basu A. Comparative study of the therapeutic effects of Drospirenone (DRSP, 3 mg) with Ethinyl Estradiol (EE, 20 mcg) pill with or without Metformin 500 mg in polycystic ovary syndrome (PCOS). Fertil Steril 2016. [DOI: 10.1016/j.fertnstert.2016.07.740] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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Basu A, Flatley C, Kumar S. Intrapartum intervention rates and perinatal outcomes following successful external cephalic version. J Perinatol 2016; 36:439-42. [PMID: 26796127 DOI: 10.1038/jp.2015.220] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/22/2015] [Revised: 12/04/2015] [Accepted: 12/14/2015] [Indexed: 11/09/2022]
Abstract
OBJECTIVE To determine intrapartum and perinatal outcomes following successful external cephalic version for breech presentation at term. STUDY DESIGN This was a retrospective cohort study of outcomes following successful external cephalic version in 411 women at an Australian tertiary maternity unit between November 2008 and March 2015. The study cohort was compared with a control group of 1236 women with cephalic presentation who underwent spontaneous labor. Intrapartum intervention rates and adverse neonatal outcomes were compared between both groups. RESULTS The success rate of external cephalic version (ECV) was 66.4%. The spontaneous vaginal delivery rate in the study cohort was 59.4% (224/411) vs 72.8% (900/1236) in the control cohort (P<0.001). Intrapartum intervention rates (emergency cesarean section (CS) and instrumental delivery) were higher in the ECV group (38% vs 27.2%, P<0.001). Rates of emergency CS for non-reassuring fetal status (9.5%, 39/411 vs 4.4%, 54/1236, P⩽0.001) and failure to progress (13.4%, 55/411 vs 4.1%, 51/1236, P<0.001) were higher in the study cohort. Neonatal outcomes were worse in the study cohort-Apgar score <7 at 5 min (2.2%, 9/411 vs 0.6%, 8/1236, P<0.001) and abnormal cord gases (8.5%, 35/411 vs 0.2%, 3/1236, P<0.001). Rates for resuscitation at birth and admission to the neonatal intensive care unit were higher in the study cohort (6.1% vs 4.1% and 1.9% vs 1.1%, respectively) but these were not statistically significant. CONCLUSION Labor following successful ECV is more likely to result in increased intrapartum intervention rates and poorer neonatal outcomes.
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Sant C, Pargass I, Basu A, Asgarali Z, Georges K. Investigating Transplacental Transmission of Equine Piroplasmosis in Thoroughbred Foals in Trinidad. J Equine Vet Sci 2016. [DOI: 10.1016/j.jevs.2016.02.210] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Dastidar GA, Gupta P, Basu B, Basu A, Shah JK, Seal SL. Is neo-adjuvant chemotherapy a better option for management of cervical cancer patients of rural India? Indian J Cancer 2016; 53:56-9. [DOI: 10.4103/0019-509x.180826] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Livingston M, Twomey P, Basu A, Smellie S, Kane J, Heald A. Should Free Thyroxine Go Back into the Routine Thyroid Profile? Exp Clin Endocrinol Diabetes 2015; 123:594-7. [DOI: 10.1055/s-0035-1559782] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Nayar S, O'Connor H, Bjerkness S, Veettil S, Basu R, Basu A. Monounsaturated Fatty Acid (Olive Oil) Lowers Hepatic Fat Content in Pre-Diabetes Subjects. J Acad Nutr Diet 2015. [DOI: 10.1016/j.jand.2015.06.306] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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57
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Basu A, Mandal A, Martin N, Pardo L. Generalized Wald-type tests based on minimum density power divergence estimators. STATISTICS-ABINGDON 2015. [DOI: 10.1080/02331888.2015.1016435] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Ghosh P, Singha Roy S, Basu A, Bhattacharjee A, Bhattacharya S. Sensitization of cisplatin therapy by a naphthalimide based organoselenium compound through modulation of antioxidant enzymes and p53 mediated apoptosis. Free Radic Res 2015; 49:453-71. [PMID: 25730340 DOI: 10.3109/10715762.2015.1012079] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
The widely used anti-cancer drug cisplatin imparts various toxic manifestations in the host, with nephrotoxicity being the most severe one. The trace element selenium shows antioxidant activity in both human and animals. The present study was designed to assess the chemoprotecting and chemoenhancing efficacy of a naphthalimide based organoselenium compound 2-(5-selenocyanato-pentyl)-benzo[de]isoquinoline 1,3-dione during cisplatin chemotherapy in mice bearing Ehrlich ascites carcinoma cells. Cisplatin (5 mg/kg b.w.) was administered intraperitoneally and the organoselenium compound (3 mg/kg b.w.) was given by oral gavage in concomitant and pretreatment schedule. The effects of the test compound was evaluated by assaying biochemical, hematological, histological, genotoxicity parameters and by investigating induction of apoptosis in tumor cells, and calculating tumor growth response in the host. The organoselenium compound significantly prevented cisplatin induced generation of reactive oxygen species (ROS), reactive nitrogen species, and onset of lipid peroxidation in the kidney tissue of the experimental mice. In addition, the test compound was also substantially restored cisplatin induced depleted activities of the renal antioxidant enzymes and reduced glutathione level; prevented the serum blood urea nitrogen level, creatinine level, chromosomal aberration, DNA damage, histological alterations of kidney, and normalized the hematological profile of the tumor bearing mice. Furthermore, the organoselenium compound alone or during combination therapy induced apoptosis in tumor cells through mitochondria mediated and DNA damage mediated pathway and ultimately increased the life span of the tumor bearing host. Hence, the results showed that the test compound not only reduced the toxicity of cisplatin but also enhanced its anti-tumor efficacy.
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Basu A, Mandal A, Martin N, Pardo L. Robust tests for the equality of two normal means based on the density power divergence. METRIKA 2014. [DOI: 10.1007/s00184-014-0518-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Madhavan P, Jairath S, Sukumaran N, Sagar A, Molmenti E, Natarajan B, Basu A, Ali N, Bhaskaran M. Kidney transplant access in the southeast: middle view. Am J Transplant 2014; 14:2669-70. [PMID: 25219445 DOI: 10.1111/ajt.12980] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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61
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Joshi A, Das SK, Samanta P, Paria P, Sen SK, Basu A. Chromosome-specific physical localisation of expressed sequence tag loci in Corchorus olitorius L. PLANT BIOLOGY (STUTTGART, GERMANY) 2014; 16:1133-1139. [PMID: 24628982 DOI: 10.1111/plb.12158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/26/2013] [Accepted: 12/20/2013] [Indexed: 06/03/2023]
Abstract
Jute (Corchorus spp.), as a natural fibre-producing species, ranks next only to cotton. Inadequate understanding of its genetic architecture is a major lacuna for genetic improvement of this crop in terms of yield and quality. Establishment of a physical map provides a genomic tool that helps in positional cloning of valuable genes. In this report, an attempt was initiated to study association and localisation of single copy expressed sequence tag (EST) loci in the genome of Corchorus olitorius. The chromosome-specific association of EST was determined based on the appearance of an extra signal for a single copy cDNA probe in mitotic interphase nuclei of specific trisomic(s) for fluorescence in situ hybridisation, and validated using a cDNA fragment of the 26S rRNA gene (600 bp) as molecular probe. The probe exhibited three signals in meiotic interphase nuclei of trisomic 5, instead of two as observed in diploids and other trisomics, indicating its association with chromosome 5. Subsequent hybridisation of the same probe on the pachytene chromosomes of diploids confirmed that 26S rRNA occupies the terminal end of the short arm of chromosome 5 in C. olitorius. Subsequently, chromosome-specific association of 63 single copy EST and their physical localisation were determined on chromosomes 2, 4, 5 and 7. The study describes chromosome-specific physical localisation of genes in jute. The approach used here could be a step towards construction of genome-wide physical maps for any recalcitrant plant species like jute.
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Biswas S, Basu A. Evaluation for the Effectiveness of Team-Based Learning in Pathology in a Caribbean Medical School. Am J Clin Pathol 2014. [DOI: 10.1093/ajcp/142.suppl1.076] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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63
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Basu A, Dasari V, Mishra RK, Khosla S. The CpG island encompassing the promoter and first exon of human DNMT3L gene is a PcG/TrX response element (PRE). PLoS One 2014; 9:e93561. [PMID: 24743422 PMCID: PMC3990577 DOI: 10.1371/journal.pone.0093561] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2013] [Accepted: 03/07/2014] [Indexed: 01/27/2023] Open
Abstract
DNMT3L, a member of DNA methyltransferases family, is present only in mammals. As it provides specificity to the action of de novo methyltransferases, DNMT3A and DNMT3B and interacts with histone H3, DNMT3L has been invoked as the molecule that can read the histone code and translate it into DNA methylation. It plays an important role in the initiation of genomic imprints during gametogenesis and in nuclear reprogramming. With important functions attributed to it, it is imperative that the DNMT3L expression is tightly controlled. Previously, we had identified a CpG island within the human DNMT3L promoter and first exon that showed loss of DNA methylation in cancer samples. Here we show that this Differentially Methylated CpG island within DNMT3L (DNMT3L DMC) acts to repress transcription, is a Polycomb/Trithorax Response Element (PRE) and interacts with both PRC1 and PRC2 Polycomb repressive complexes. In addition, it adopts inactive chromatin conformation and is associated with other inactive chromatin-specific proteins like SUV39H1 and HP1. The presence of DNMT3L DMC also influences the adjacent promoter to adopt repressive histone post-translational modifications. Due to its association with multiple layers of repressive epigenetic modifications, we believe that PRE within the DNMT3L DMC is responsible for the tight regulation of DNMT3L expression and the aberrant epigenetic modifications of this region leading to DNMT3L overexpression could be the reason of nuclear programming during carcinogenesis.
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Mourya DT, Yadav PD, Basu A, Shete A, Patil DY, Zawar D, Majumdar TD, Kokate P, Sarkale P, Raut CG, Jadhav SM. Malsoor virus, a novel bat phlebovirus, is closely related to severe fever with thrombocytopenia syndrome virus and heartland virus. J Virol 2014; 88:3605-9. [PMID: 24390329 PMCID: PMC3957954 DOI: 10.1128/jvi.02617-13] [Citation(s) in RCA: 74] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2013] [Accepted: 12/19/2013] [Indexed: 12/19/2022] Open
Abstract
During a survey in the year 2010, a novel phlebovirus was isolated from the Rousettus leschenaultii species of bats in western India. The virus was identified by electron microscopy from infected Vero E6 cells. Phylogenic analysis of the complete genome showed its close relation to severe fever with thrombocytopenia syndrome (SFTS) and Heartland viruses, which makes it imperative to further study its natural ecology and potential as a novel emerging zoonotic virus.
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Muraru D, Piasentini E, Mihaila S, Naso P, Casablanca S, Peluso D, Denas G, Ucci L, Iliceto S, Badano L, Abdel Moneim SS, Kirby B, Mendrick E, Norby B, Hagen M, Basu A, Mulvagh S, Chelliah R, Whyte G, Sharma S, Pantazis A, Senior R, Grishenkov D, Kothapalli S, Gonon A, Janerot-Sjoberg B, Gianstefani S, Maccarthy P, Rogers T, Sen A, Delithanasis I, Reiken J, Charangwa L, Douiri A, Monaghan M, Bombardini T, Sicari R, Gherardi S, Ciampi Q, Pratali L, Salvadori S, Picano E, Shivalkar B, Belkova P, Wouters K, Van De Heyning C, De Maeyer C, Van Herck P, Vrints C, Voilliot D, Magne J, Dulgheru R, Henri C, Kou S, Laaraibi S, Sprynger M, Andre B, Pierard L, Lancellotti P, Federspiel M, Oger E, Fournet M, Daudin M, Thebault C, Donal E, Bombardini T, Arpesella G, Bernazzali S, Potena L, Serra W, Del Bene R, Picano E. Moderated Posters session * Insights into the use of contrast stress echocardiography and 3D strain: 14/12/2013, 08:30-12:30 * Location: Moderated Poster area. Eur Heart J Cardiovasc Imaging 2013. [DOI: 10.1093/ehjci/jet212] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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66
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Dube S, Errazuriz I, Cobelli C, Basu R, Basu A. Assessment of insulin action on carbohydrate metabolism: physiological and non-physiological methods. Diabet Med 2013; 30:664-70. [PMID: 23683103 PMCID: PMC3662485 DOI: 10.1111/dme.12189] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Accepted: 03/14/2013] [Indexed: 01/03/2023]
Abstract
Carbohydrate metabolism in humans is regulated by insulin secretion from pancreatic β-cells and glucose disposal by insulin-sensitive tissues. Insulin facilitates glucose utilization in peripheral tissues and suppresses hepatic glucose production. Any defects in insulin action predispose an individual to glucose intolerance and Type 2 diabetes mellitus. Early detection of defects in insulin action could provide opportunities to prevent or delay progression of the disease state. There are different approaches to assess insulin action. Initial methods, such as peripheral insulin concentration and simple indices, have several limitations. Subsequently, researchers developed methodologies using intravenous glucose infusion to determine glucose fluxes. However, these methodologies are limited by being non-physiological. Newer, innovative techniques that have been developed are more sophisticated and physiological. By modelling glucose kinetics using isotope dilution techniques, several robust parameters can be obtained that are physiologically relevant and sound. This brief review summarizes most of the non-physiological and physiological methodologies used to measure the variables of insulin action.
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67
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Basu A, Ghosh SK, Saha R, Nandi R, Ghosh T, Saha B. Effect of Some Non Functional Surfactants and Electrolytes on the Hexavalent Chromium Reduction by Glycerol: A Mechanistic Study. TENSIDE SURFACT DET 2013. [DOI: 10.3139/113.110152] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
Abstract
Hexavalent chromium is a widespread environmental contaminant and a known human carcinogen. Kinetics of reduction of hexavalent chromium by bio-molecule glycerol in micellar media have been studied spectrophotometrically. The cytoplasmic reduction of hexavalent chromium to trivalent chromium occurs in micro-heterogeneous systems. In vitro, the micelles are considered to mimic the cellular membranes. The electron transfer processes occurring in the micellar systems is considered as model to obtain insight into the electron transport process prevailing in biological systems. Micellar media is also a probe to establish the mechanistic paths of reduction of hexavalent chromium to trivalent chromium. Effects of electrolytes common to biological system are studied to establish the proposed reaction mechanism strongly.
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68
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Rui Shen, Cheng I, Basu A. Cross-Scale Coefficient Selection for Volumetric Medical Image Fusion. IEEE Trans Biomed Eng 2013; 60:1069-79. [DOI: 10.1109/tbme.2012.2211017] [Citation(s) in RCA: 82] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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69
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Gon S, Basu A, Majumdar B, Das TK, Sengupta M, Ghosh D. Spectrum of histopathological lesions in the fallopian tubes. JOURNAL OF PATHOLOGY OF NEPAL 2013. [DOI: 10.3126/jpn.v3i5.7858] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Background: Fallopian tubes are common surgical specimen in the pathology laboratory; still there is a lack of data to describe the frequency of various histological fi ndings. The aim and objectives of this study was to describe the various histopathological fi ndings of fallopian tubes. Materials and Methods: Two thousand fi ve hundred and seventy fi ve cases where fallopian tubes were removed either separately or along with other female genital tract organs were studied retrospectively and their histopathological fi ndings documented. Results: Ectopic pregnancy comprised maximum number of cases closely followed by salpingitis. Primary neoplastic lesions were rare as compared to secondary malignancies. Serial sections of fallopian tube and sections from representative areas are essential for a pathologist so that the diagnosis of these pathological entities is not missed. Conclusion: Though the fallopian tubes remain unremarkable in majority of the surgical pathological specimens, it must be subjected for histopathological examination to demonstrate the pathological lesions. Journal of Pathology of Nepal (2013) Vol. 3, No.1, Issue 5, 356-360 DOI: http://dx.doi.org/10.3126/jpn.v3i5.7858
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70
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Puttarajappa C, Yabes J, Bei L, Shah N, Bernardo J, McCauley J, Basu A, Tan H, Shapiro R, Unruh M, Wu C. Cancer risk with alemtuzumab following kidney transplantation. Clin Transplant 2013; 27:E264-71. [PMID: 23480032 DOI: 10.1111/ctr.12094] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 12/18/2012] [Indexed: 12/16/2022]
Abstract
Alemtuzumab has been employed for induction therapy in kidney transplantation with low rates of acute rejection and excellent graft and patient survival. Antibody induction therapy has been linked to increased vulnerability to cancer. Data regarding malignancy rates with alemtuzumab are limited. We studied 1350 kidney transplant recipients (between 2001 and 2009) at the University of Pittsburgh Starzl Transplant Institute, for post-transplant de novo and recurrent malignancy, excluding non-melanoma skin cancer, among patients receiving alemtuzumab, thymoglobulin, and no induction therapies. Of the 1350 patients, 1002 (74.2%) received alemtuzumab, 205 (15.2%) received thymoglobulin, and 122 (9%) received no induction therapy. After excluding cancers occurring within 60 d post-transplantation, 43 (3.25%) malignancies were observed during a median follow-up time of 4.0 yr. The incidence of malignancy was 5.4% (1.09 per 100 patient-years [PY]) with thymoglobulin, 2.8% (0.74 per 100 PY) with alemtuzumab, and 3.3% (0.66 per 100 PY) with no induction (across all groups; p = 0.2342, thymoglobulin vs. alemtuzumab; p = 0.008). Thus, with the exception of non-melanoma skin cancer which we did not evaluate, alemtuzumab induction was not associated with increased cancer incidence post-kidney transplantation when compared to no induction therapy and was associated with lower cancer incidence when compared to thymoglobulin.
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Mal P, Dutta S, Bandyopadhyay D, Dutta K, Basu A, Bishayi B. Gentamicin in combination with ascorbic acid regulates the severity of Staphylococcus aureus infection-induced septic arthritis in mice. Scand J Immunol 2013; 76:528-40. [PMID: 22924656 DOI: 10.1111/j.1365-3083.2012.02766.x] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
To study the effects of gentamicin in combination with ascorbic acid on septic arthritis, mice were infected with Staphylococcus aureus (S. aureus) and treated with gentamicin, which was given at 5 mg/kg after 24 h of infection, followed by ascorbic acid, given at 20 mg/kg body weight after 2 h of gentamicin treatment. Mice were sacrificed at 3, 9, 15 days post-infection (dpi). Combined treatment of infected mice with gentamicin and ascorbic acid eradicated the bacteria from the blood, spleen and synovial tissue and showed a significant gross reduction in arthritis, reduced serum levels of tumour necrosis factor alpha (TNF-α) and interferon gamma (IFN-γ). S. aureus-infected mice have demonstrated the disturbed antioxidant status measured in terms of cellular antioxidants like reduced glutathione and antioxidant enzymes such as superoxide dismutase (SOD) and catalase. The same were ameliorated when the animals were co-treated with gentamicin along with ascorbic acid.
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72
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Brink S, Nease S, Hasler P, Ramakrishnan S, Wunderlich R, Basu A, Degnan B. A learning-enabled neuron array IC based upon transistor channel models of biological phenomena. IEEE TRANSACTIONS ON BIOMEDICAL CIRCUITS AND SYSTEMS 2013; 7:71-81. [PMID: 23853281 DOI: 10.1109/tbcas.2012.2197858] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
We present a single-chip array of 100 biologically-based electronic neuron models interconnected to each other and the outside environment through 30,000 synapses. The chip was fabricated in a standard 350 nm CMOS IC process. Our approach used dense circuit models of synaptic behavior, including biological computation and learning, as well as transistor channel models. We use Address-Event Representation (AER) spike communication for inputs and outputs to this IC. We present the IC architecture and infrastructure, including IC chip, configuration tools, and testing platform. We present measurement of small network of neurons, measurement of STDP neuron dynamics, and measurement from a compiled spiking neuron WTA topology, all compiled into this IC.
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73
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Basu A, Ghosh S. Neural correlates for vanishing point perception. Neurophysiol Clin 2013. [DOI: 10.1016/j.neucli.2012.11.003] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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74
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Sarkar N, Basu A. Instabilities and diffusion in a hydrodynamic model of a fluid membrane coupled to a thin active fluid layer. THE EUROPEAN PHYSICAL JOURNAL. E, SOFT MATTER 2012; 35:115. [PMID: 23149567 DOI: 10.1140/epje/i2012-12115-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/02/2011] [Accepted: 09/19/2012] [Indexed: 06/01/2023]
Abstract
We construct a coarse-grained effective two-dimensional (2d hydrodynamic theory as a theoretical model for a coupled system of a fluid membrane and a thin layer of a polar active fluid in its ordered state that is anchored to the membrane. We show that such a system is prone to generic instabilities through the interplay of nonequilibrium drive, polar order and membrane fluctuation. We use our model equations to calculate diffusion coefficients of an inclusion in the membrane and show that their values depend strongly on the system size, in contrast to their equilibrium values. Our work extends the work of S. Sankararaman and S. Ramaswamy (Phys. Rev. Lett., 102, 118107 (2009)) to a coupled system of a fluid membrane and an ordered active fluid layer. Our model is broadly inspired by and should be useful as a starting point for theoretical descriptions of the coupled dynamics of a cell membrane and a cortical actin layer anchored to it.
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75
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Chatterjee M, Chakraborty B, Chatterjee SS, Bose M, Mukherjee K, Basu A, Das S, Banerjee M, Ghosh U. Enteric fever in an HIV/AIDS patient: Atypical manifestations. IRANIAN JOURNAL OF MICROBIOLOGY 2012; 4:150-2. [PMID: 23066491 PMCID: PMC3465542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
Bloodstream infections with Salmonella typhi, is uncommon in human immunodeficiency virus (HIV)-infected persons. The symptoms in such patients are often non-specific and have a rather insidious onset and progression. We report a patient with sepsis and lower limb gangrene due to Salmonella typhi infection in an HIV-infected patient.
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