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Coumar MV, Parihar RS, Dwivedi AK, Saha JK, Rajendiran S, Dotaniya ML, Kundu S. Impact of pigeon pea biochar on cadmium mobility in soil and transfer rate to leafy vegetable spinach. ENVIRONMENTAL MONITORING AND ASSESSMENT 2016; 188:31. [PMID: 26670040 DOI: 10.1007/s10661-015-5028-y] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2015] [Accepted: 12/02/2015] [Indexed: 05/28/2023]
Abstract
Introduction of heavy metals in the environment by various anthropogenic activities has become a potential treat to life. Among the heavy metals, cadmium (Cd) shows relatively high soil mobility and has high phyto-mammalian toxicity. Integration of soil remediation and ecosystem services, such as carbon sequestration in soils through organic amendments, may provide an attractive land management option for contaminated sites. The application of biochar in agriculture has recently received much attention globally due to its associated multiple benefits, particularly, long-term carbon storage in soil. However, the application of biochar from softwood crop residue for heavy metal immobilization, as an alternative to direct field application, has not received much attention. Hence, a pot experiment was conducted to study the effect of pigeon pea biochar on cadmium mobility in a soil-plant system in cadmium-spiked sandy loam soil. The biochar was prepared from pigeon pea stalk through a slow pyrolysis method at 300 °C. The experiment was designed with three levels of Cd (0, 5, and 10 mg Cd kg(-1) soil) and three levels of biochar (0, 2.5, and 5 g kg(-1) soil) using spinach as a test crop. The results indicate that with increasing levels of applied cadmium at 5 and 10 mg kg(-1) soil, the dry matter yield (DMY) of spinach leaf decreased by 9.84 and 18.29 %, respectively. However, application of biochar (at 2.5 and 5 g kg(-1) soil) significantly increased the dry matter yield of spinach leaf by 5.07 and 15.02 %, respectively, and root by 14.0 and 24.0 %, respectively, over the control. Organic carbon content in the post-harvest soil increased to 34.9 and 60.5 % due to the application of biochar 2.5 and 5 g kg(-1) soil, respectively. Further, there was a reduction in the diethylene triamine pentaacetic acid (DTPA)-extractable cadmium in the soil and in transfer coefficient values (soil to plant), as well as its concentrations in spinach leaf and root, indicating that cadmium mobility was decreased due to biochar application. This study shows that pigeon pea biochar has the potential to increase spinach yield and reduce cadmium mobility in contaminated sandy soil.
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Herms S, Kohls F, Kühnle E, Kundu S, Hillemanns P, Staboulidou I. Korrelation des pH-Wertes aus der Mikroblutuntersuchung mit dem tatsächlichen Geburts-pH. Z Geburtshilfe Neonatol 2015. [DOI: 10.1055/s-0035-1566451] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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Wu M, Barnard J, Kundu S, McCrae KR. A novel pathway of cellular activation mediated by antiphospholipid antibody-induced extracellular vesicles. J Thromb Haemost 2015; 13:1928-40. [PMID: 26264622 PMCID: PMC4877623 DOI: 10.1111/jth.13072] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Accepted: 07/29/2015] [Indexed: 12/21/2022]
Abstract
BACKGROUND Elevated levels of endothelial cell (EC)-derived extracellular vesicles (EVs) circulate in patients with antiphospholipid antibodies (APLAs), and APLAs, particularly those against β2 -glycoprotein I (β2 GPI), stimulate EV release from ECs. However, the effects of EC-derived EVs have not been characterized. OBJECTIVE To determine the mechanism by which EVs released from ECs by anti-β2 GPI antibodies activate unstimulated ECs. PATIENTS/METHODS We used interleukin (IL)-1 receptor inhibitors, small interfering RNA (siRNA) against Toll-like receptors (TLRs) and microRNA (miRNA) profiling to assess the mechanism(s) by which EVs released from ECs exposed to anti-β2 GPI antibodies activated unstimulated ECs. RESULTS AND CONCLUSIONS Anti-β2 GPI antibodies caused formation of an EC inflammasome and the release of EVs that were enriched in mature IL-1β, had a distinct miRNA profile, and caused endothelial activation. However, activation was not inhibited by an IL-1β antibody, an IL-1 receptor antagonist, or IL-1 receptor siRNA. EC activation by EVs required IL-1 receptor-associated kinase 4 phosphorylation, and was inhibited by pretreatment of cells with TLR7 siRNA or RNase A, which degrades ssRNA. Profiling of miRNA in EVs released from ECs incubated with β2 GPI and either control IgG or anti-β2 GPI antibodies revealed numerous differences in the content of specific miRNAs, including a significant decrease in mIR126. These observations demonstrate that, although anti-β2 GPI-derived endothelial EVs contain IL-1β, they activate unstimulated ECs through a TLR7-dependent and ssRNA-dependent pathway. Alterations in miRNA content may contribute to the ability of EVs derived from ECs exposed to anti-β2 GPI antibodies to activate unstimulated ECs in an autocrine or paracrine manner.
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Soergel P, Schöffski O, Hillemanns P, Hille-Betz U, Kundu S. Increasing Liability Premiums in Obstetrics – Analysis, Effects and Options. Geburtshilfe Frauenheilkd 2015. [DOI: 10.1055/s-0035-1546252] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Kundu S, Wildgrube J, Schippert C, Hillemanns P, Brandes I. Supporting and Inhibiting Factors When Coping with Endometriosis From the Patients' Perspective. Geburtshilfe Frauenheilkd 2015; 75:462-469. [PMID: 26097250 DOI: 10.1055/s-0035-1546052] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2014] [Revised: 03/07/2015] [Accepted: 04/19/2015] [Indexed: 10/23/2022] Open
Abstract
Aim: Endometriosis is a chronic gynaecological disorder with manifold symptoms and psychosocial effects on the lives of affected women. The prevalence of endometriosis is estimated to be up to ten percent of women of reproductive age. As a result of its unclear aetiology, only limited treatment options are available. The treatment and care of affected women is therefore a challenge for their doctors. There is a need for healthcare services to provide affected women with support to cope with the disorder better. The aim of the study was to identify supporting and inhibiting factors on disease management to develop new support ideas. Materials and Methods: The results are based on a content analysis evaluation of text responses from 135 women with confirmed endometriosis. Open questions about disease management were posed in a patient questionnaire. A classification system was developed according to Mayrings Qualitative Content Analysis, which allowed the main topics to be identified and summarised qualitatively using a quantitative intermediate step. Results: Social support, treatment, as well as professional and healthcare system performance were found to be particularly supportive by patients. However, when questioned about inhibiting factors, healthcare system professionals and their performance were most commonly criticised. Just over 50 % of women expressed their criticism of doctors. Quality of care and empathy towards the patients were especially criticised. There is also a need for improvement with regard to communication and general support from doctors. The results illustrate the importance of doctors for women affected by endometriosis, but make it clear that there is a great need for improvement with regard to the profession. Conclusion: The results provide the first indication of problem areas in the management of endometriosis from which approaches could be developed to improve care. However, it must be pointed out that the perspective of affected women was solely investigated. For a comprehensive analysis, it would be necessary to include the perspective of care providers and the influence of society as well as the healthcare system.
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Salmoukas C, Kundu S, Soergel P, Hillemanns P, von Kaisenberg C, Staboulidou I. Background Knowledge and Attitude of Pregnant Women towards Ultrasound Screening at 20–23 Weeks Gestation. Z Geburtshilfe Neonatol 2015; 220:16-20. [DOI: 10.1055/s-0035-1545287] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Soergel P, Schöffski O, Hillemanns P, Hille-Betz U, Kundu S. Increasing Liability Premiums in Obstetrics - Analysis, Effects and Options. Geburtshilfe Frauenheilkd 2015; 75:367-376. [PMID: 26028694 PMCID: PMC4437753 DOI: 10.1055/s-0035-1545955] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Revised: 03/05/2015] [Accepted: 03/06/2015] [Indexed: 10/23/2022] Open
Abstract
Whenever people act, mistakes are made. In Germany, it is thought that a total of 40 000 cases of malpractice occur per year. In recent years, costs for liability insurance have risen significantly in almost all spheres of medicine as a whole. Liability in the health care sector is founded on the contractual relationship between doctor and patient. Most recently, case law developed over many years has been codified with the Patients' Rights Act. In obstetrics, the focus of liability law is on brain damage caused by hypoxia or ischemia as a result of management errors during birth. The costs per claim are made up of various components together with different shares of damage costs (increased needs, in particular therapy costs and nursing fees, acquisition damage, treatment costs, compensation). In obstetrics in particular, recent focus has been on massively increased liability payments, also accompanied by higher liability premiums. This causes considerable financial burdens on hospitals as well as on midwives and attending physicians. The premiums are so high, especially for midwives and attending physicians, that professional practice becomes uneconomical in some cases. In recent years, these circumstances have also been intensely debated in the public sphere and in politics. However, the focus here is on the occupation of midwife. In 2014, in the GKV-FQWG (Statutory Health Insurance - Quality and Further Development Act), a subsidy towards the occupational liability premium was defined for midwives who only attended a few deliveries. However, to date, a complete solution to the problem has not been found. A birth will never be a fully controllable risk, but in rare cases will always end with injury to the child. The goal must be to minimise this risk, through good education and continuous training, as well as constant critical analysis of one's own activities. Furthermore, it seems sensible, especially in non-clinical Obstetrics, to look at the current study data more closely. Among the many solutions which have been proposed, such as the development of quality management, risk management and prevention, better remuneration, a waiver on recourse claims by social insurance underwriters, a cap on damage costs of liability insurers, state liability, an indemnity fund, a system change to Medical Treatment Risk Insurance, as well as a discussion on whether or not it makes sense to use non-clinical obstetrics for the prevention of a further increase in premiums, not one stands out as being especially convincing. On the contrary, a meaningful coordination of various concepts should follow. What seems sensible is a higher remuneration per birth, taking into account the liability premiums as well as, in the medium term, the establishment of a liability fund which, from a certain limit upwards, steps in as liable third party.
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Givvimani S, Pushpakumar SB, Metreveli N, Veeranki S, Kundu S, Tyagi SC. Role of mitochondrial fission and fusion in cardiomyocyte contractility. Int J Cardiol 2015; 187:325-33. [PMID: 25841124 DOI: 10.1016/j.ijcard.2015.03.352] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/30/2014] [Revised: 03/12/2015] [Accepted: 03/22/2015] [Indexed: 11/28/2022]
Abstract
BACKGROUND Mitochondria constitute 30% of cell volume and are engaged in two dynamic processes called fission and fusion, regulated by Drp-1 (dynamin related protein) and mitofusin 2 (Mfn2). Previously, we showed that Drp-1 inhibition attenuates cardiovascular dysfunction following pressure overload in aortic banding model and myocardial infarction. As dynamic organelles, mitochondria are capable of changing their morphology in response to stress. However, whether such changes can alter their function and in turn cellular function is unknown. Further, a direct role of fission and fusion in cardiomyocyte contractility has not yet been studied. In this study, we hypothesize that disrupted fission and fusion balance by increased Drp-1 and decreased Mfn2 expression in cardiomyocytes affects their contractility through alterations in the calcium and potassium concentrations. METHODS To verify this, we used freshly isolated ventricular myocytes from wild type mouse and transfected them with either siRNA to Drp-1 or Mfn2. Myocyte contractility studies were performed by IonOptix using a myopacer. Intracellular calcium and potassium measurements were done using flow cytometry. Immunocytochemistry (ICC) was done to evaluate live cell mitochondria and its membrane potential. Protein expression was done by western blot and immunocytochemistry. RESULTS We found that silencing mitochondrial fission increased the myocyte contractility, while fusion inhibition decreased contractility with simultaneous changes in calcium and potassium. Also, we observed that increase in fission prompted decrease in Serca-2a and increase in cytochrome c leakage leading to mitophagy. CONCLUSION Our results suggested that regulating mitochondrial fission and fusion have direct effects on overall cardiomyocyte contractility and thus function.
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Floss K, Garcia-Rocha GJ, Kundu S, von Kaisenberg C, Hillemanns P, Schippert C. Fertility and Pregnancy Outcome after Myoma Enucleation by Minilaparotomy under Microsurgical Conditions in Pronounced Uterus Myomatosus. Geburtshilfe Frauenheilkd 2015. [DOI: 10.1055/s-0035-1545878] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022] Open
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Mudiyanselage K, Senanayake SD, Ramirez PJ, Kundu S, Baber A, Yang F, Agnoli S, Axnanda S, Liu Z, Hrbek J, Evans J, Rodriguez JA, Stacchiola D. Intermediates Arising from the Water–Gas Shift Reaction over Cu Surfaces: From UHV to Near Atmospheric Pressures. Top Catal 2015. [DOI: 10.1007/s11244-015-0368-y] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Bhattacharya S, Chaudhuri A, Ghosh T, Banerjee K, Bhattacharya C, Kundu S, Mukherjee G, Rana TK, Roy P, Pandey R, Bhattacharya P. Fusion – fission dynamics: fragment mass distribution studies. EPJ WEB OF CONFERENCES 2015. [DOI: 10.1051/epjconf/20158600004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Srivastava V, Bhattacharya C, Rana TK, Manna S, Kundu S, Bhattacharya S, Banerjee K, Roy P, Pandey R, Mukherjee G, Ghosh TK, Meena JK, Roy T, Chaudhuri A, Sinha M, Saha A, Dey A, Asgar MA, Roy S, Shaikh MM. Structure of26Al studied by one - nucleon transfer reaction27Al(d,t). EPJ WEB OF CONFERENCES 2015. [DOI: 10.1051/epjconf/20158600055] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Floss K, Garcia-Rocha GJ, Kundu S, von Kaisenberg CS, Hillemanns P, Schippert C. Fertility and Pregnancy Outcome after Myoma Enucleation by Minilaparotomy under Microsurgical Conditions in Pronounced Uterus Myomatosus. Geburtshilfe Frauenheilkd 2015; 75:56-63. [PMID: 25684787 PMCID: PMC4318730 DOI: 10.1055/s-0034-1396163] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2014] [Revised: 12/05/2014] [Accepted: 12/05/2014] [Indexed: 02/05/2023] Open
Abstract
Introduction: Besides the typical complaints and symptoms, myomas can cause sterility, infertility and complications during pregnancy. Laparoscopic interventions reach their limits with regard to organ preservation and the simultaneous desire to have children in the removal of multiple and larger intramural myoma nodes. The aim of this study is to examine fertility status and pregnancy outcome after myoma removal by minilaparotomy (skin incision maximal 8 cm) in women with pronounced uterus myomatosus. Materials and Methods: This retrospective study makes use of the data from 160 patients with an average age of 34.6 years. Factors analysed include number, size and localisation of the myomas, complaints due to the myoma, pre- and postoperative gravidity, mode of delivery, and complications of birth. Results: Indications for organ-sparing myoma enucleation were the desire to have children (72.5 %), bleeding disorders (60 %) and pressure discomfort (36.5 %). On average 4.95 (SD ± 0.41), maximally 46 myomas were removed. The largest myoma had a diameter of 6.64 cm (SD ± 2.74). 82.5 % of the patients had transmural myomas, in 17.5 % the uterine cavity was inadvertently opened. On average the operating time was 163 minutes (SD ± 45.47), the blood loss 1.59 g/dL (SD ± 0.955). 60.3 % of the patients with the desire to have children became pregnant postoperatively. 75.3 % of the pregnancies were on average carried through to the 38th week (28.4 % vaginal deliveries, 71.6 % Caesarean sections). In the postoperative period there was one case of uterine rupture in the vicinity of a previous scar. Discussion: By means of the microsurgical "mini-laparotomy" even extensive myomatous uterine changes can, in the majority of cases, be operated in an organ-sparing manner with retention of the ability to conceive and to carry a pregnancy through to maturity of the infant. The risk for a postoperative uterine rupture in a subsequent pregnancy and during delivery is minimal.
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Rana TK, Bhattacharya C, Manna S, Srivastava V, Banerjee K, Kundu S, Roy P, Pandey R, Chaudhuri A, Roy T, Ghosh TK, Mukherjee G, Bhattacharya S, Meena JK, Pandit SK, Mahata K, Patale P, Shrivastava A, Nanal V. Fragment emission studies in low energy light heavy-ion reactions. EPJ WEB OF CONFERENCES 2015. [DOI: 10.1051/epjconf/20158600036] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Erlenwein J, Kundu S, Schippert C, Soergel P, Hillemanns P, Staboulidou I. Attitude toward, acceptance of and knowledge about female sterilization as a method of contraception. Eur J Obstet Gynecol Reprod Biol 2014; 185:83-7. [PMID: 25541529 DOI: 10.1016/j.ejogrb.2014.11.028] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/28/2014] [Revised: 11/18/2014] [Accepted: 11/21/2014] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Surgical sterilization via tubal ligation or the disconnection of the tubes is a method of permanent contraception. The aim of this study was to evaluate the attitude, acceptance and knowledge of women about female sterilization as a method of contraception in terms of the social and cultural backgrounds of those women. STUDY DESIGN Prospective study based on an anonymous questionnaire that analyzed background knowledge, attitude, influence factors and motivation regarding sterilization, as well as the reasons for declining. The questionnaire also attempted to evaluate the effects on the self-esteem of the women, as well as the impact of religious dogma and the related beliefs. RESULTS One thousand, eight hundred questionnaires were distributed, and 1247 women completed the questionnaire—a response rate of 69.3%. There were mainly positive attitudes toward sterilization as a contraceptive method. Cultural background, including religion and faith; the mother's experiences and point of view; knowledge; family planning and the actual life situation have an influence on the attitudes toward and acceptance of sterilization as a contraceptive method and on the final choice of a contraceptive method. CONCLUSION Cultural background and present life situation have a great impact on the attitude toward and acceptance of sterilization as a method of contraception, thus influencing the final choice of a contraceptive method. Detailed counselling about this topic is essential and should be improved.
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Chakrabarty T, Mahajan AV, Kundu S. Cluster spin glass behavior in geometrically frustrated Zn3V3O8. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2014; 26:405601. [PMID: 25210922 DOI: 10.1088/0953-8984/26/40/405601] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
We report the bulk magnetic properties of a yet unexplored vanadium-based multi-valenced spinel system, Zn3V3O8. A Curie-Weiss fit of our dc magnetic susceptibility χ(T) data in the temperature region of 140-300 K yields a Curie constant C = 0.75 cm(3)K mole(-1) V(-1), θCW = -370 K. We have observed a splitting between the zero field cooled (ZFC) and field cooled (FC) susceptibility curves below a temperature Tirr of about 6.3 K. The value of the 'frustration parameter' (|θcw|/T(N) ~ 100) suggests that the system is strongly frustrated. From the ac susceptibility measurements we find a logarithmic variation of freezing temperature (Tf) with frequency ν attesting to the formation of a spin glass below Tf. However, the value of the characteristic frequency obtained from the Vogel-Fulcher fit suggests that the ground state is closer to a cluster glass rather than a conventional spin glass. We explored further consequences of the spin glass behavior and observed aging phenomena and memory effect (both in ZFC and FC). We found that a positive temperature cycle erases the memory, as predicted by the hierarchical model. From the heat capacity CP data, a hump-like anomaly was observed in CP/T at about 3.75 K. Below this temperature the magnetic heat capacity shows a nearly linear dependence with T which is consistent with the formation of a spin glass state below Tf in Zn(3)V(3)O(8).
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Kushwah SK, Dotaniya ML, Upadhyay AK, Rajendiran S, Coumar MV, Kundu S, Subba Rao A. Assessing Carbon and Nitrogen Partition in Kharif Crops for Their Carbon Sequestration Potential. NATIONAL ACADEMY SCIENCE LETTERS-INDIA 2014. [DOI: 10.1007/s40009-014-0230-y] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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Gohil M, Roy P, Banerjee K, Bhattacharya S, Bhattacharya C, Kundu S, Rana TK, Ghosh TK, Mukherjee G, Pandey R, Meena JK, Pai H, Srivastava V, Dey A, Pandit D, Mukhopadhyay S, Pal S, Banerjee SR. Angular momentum dependence of the nuclear level density parameter. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146603073] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Kundu S, Mathew A, Munshi A, Prabhash K, Pramesh CS, Agarwal JP. Stereotactic body radiotherapy in early stage non-small cell lung cancer: first experience from an Indian Centre. Indian J Cancer 2014; 50:227-32. [PMID: 24061463 DOI: 10.4103/0019-509x.118739] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
BACKGROUND Surgery is the standard of care for early stage (T1-2, N0, M0) non-small cell lung cancer. A considerable number of these patients are ineligible for surgery due to age and comorbidities. Hypo fractionated high-dose stereotactic body radiotherapy (SBRT) is being performed for these group of patients. There is paucity of literature regarding this novel technique from the Indian subcontinent. AIMS AND OBJECTIVES We hereby report the dosimetry, response and outcome of our small cohort of early stage non-small cell lung cancer patients treated with SBRT. MATERIALS AND METHODS Between December 2007 and December 2010, 8 patients of early stage (T1-2N0M0) underwent SBRT at our centre. All the patients had undergone whole body PET-CT scan, MRI brain and pulmonary function test (PFT with DLCO). The SBRT schedules included 48 Gy in 6 fractions for peripherally located and 48 Gy in 8 fractions for centrally located tumors. Response and toxicity were assessed in 3 monthly follow up visits. RESULTS The median duration of follow up was 18 months (range 8-44 months). The median age of the patients was 70 years (range 63-82 years) and the median tumor diameter was 4 cm (range 2.8-5.0 cm). The mean PTV volume was 165 cc(range 127.3- 193.9 cc). The mean dose to the PTV was 99.5% (range 97.7- 102.1%). After 3 months, 7 patients had complete metabolic response and 1 patient had partial metabolic response. Overall survival at 1.5 years was 87.5%. One patient had grade 2 pneumonitis. No toxicities of grade 3 or higher were identified. CONCLUSION SBRT for early stage NSCLC resulted in excellent local control with minimal toxicity and can be considered as a treatment option in properly selected patients.
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Singh RB, Beegom R, Verma SP, Haque M, Singh R, Mehta AS, De AK, Kundu S, Roy S, Krishnan A, Simhadri H, Paranjpe NB, Agarwal N. Association of dietary factors and other coronary risk factors with social class in women in five Indian cities. Asia Pac J Clin Nutr 2014; 9:298-302. [PMID: 24394506 DOI: 10.1046/j.1440-6047.2000.00177.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
The association between social classes, food intake and coronary risk factors was determined. Cross-sectional surveys were conducted in 6-12 urban streets in each of five cities, each one from five different regions of India using similar methods of dietary intakes and criteria of diagnosis. We randomly selected 3257 women aged 25-64 years inclusive, from Moradabad (n = 902), Trivandrum (n = 760), Calcutta (n = 410), Nagpur (n = 405) and Bombay (n = 780). All subjects, after pooling of data, were divided into social class 1 (n = 985), class 2 (n = 790), class 3 (n = 774), class 4 (n = 602) and class 5 (n = 206) based on various attributes of socioeconomic status. Social class 1 was the highest and 5 was the lowest social class. Social classes 1-3 had greater intake of pro-atherogenic foods; total visible fat, milk and milk products, meat and eggs, as well as sugar and confectionery, compared to social classes 4 and 5. The consumption of wheat, rice, millets, fruits, vegetables and legume/total visible fat ratio were inversely associated with social class. Mean body mass index (BMI), obesity, overweight, central obesity and sedentary lifestyle were also significantly more common among subjects from higher social classes. Spearman's rank correlation showed that bodyweight, BMI, wheat, rice, millets, total visible fat, milk and milk products, meat, eggs, sugar and jaggery intakes were significantly correlated with social class. Social class 5 subjects had a lower intake of all foods and a lower BMI, suggestive of a higher rate of undernutrition among them. The findings indicate that the consumption of pro-atherogenic foods and other coronary risk factors are more common in higher social classes compared to lower social classes.
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Rana TK, Bhattacharya C, Bhattacharya S, Kundu S, Banerjee K, Ghosh TK, Mukherjee G, Pandey R, Roy P, Srivastava V, Gohil M, Meena JK, Pai H, Saha AK, Sahoo JK, Saha RM. Further limit on 3α decay of Hoyle state. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146603072] [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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Rana TK, Bhattacharya C, Bhattacharya S, Kundu S, Banerjee K, Ghosh TK, Mukherjee G, Pandey R, Gohil M, Dey A, Meena JK, Prajapati G, Roy P, Pai H, Biswas M. Search for rotational state of Hoyle state in complete kinematic experiment 12C(α, α′) 3α. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146603010] [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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Pai H, Mukherjee G, Bhattacharya S, Bhattacharya C, Bhattacharyya S, Bhattacharjee T, Chanda S, Rajbanshi S, Goswami A, Gohil MR, Kundu S, Ghosh TK, Banerjee K, Rana TK, Pandey R, Prajapati GK, Banerjee SR, Mukhopadhyay S, Pandit D, Pal S, Meena J, Mukhopadhyay P, Choudhury A. Identification of intruder πi13/2state in 197Tl. EPJ WEB OF CONFERENCES 2014. [DOI: 10.1051/epjconf/20146602079] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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125
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Meena VD, Dotaniya ML, Coumar V, Rajendiran S, Ajay, Kundu S, Subba Rao A. A Case for Silicon Fertilization to Improve Crop Yields in Tropical Soils. ACTA ACUST UNITED AC 2013. [DOI: 10.1007/s40011-013-0270-y] [Citation(s) in RCA: 179] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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126
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van Pelt ED, Mescheriakova JY, Makhani N, Ketelslegers IA, Neuteboom RF, Kundu S, Broer L, Janssens C, Catsman-Berrevoets CE, van Duijn CM, Banwell B, Bar-Or A, Hintzen RQ. Risk genes associated with pediatric-onset MS but not with monophasic acquired CNS demyelination. Neurology 2013; 81:1996-2001. [DOI: 10.1212/01.wnl.0000436934.40034eb] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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Nazzaro A, Salerno A, Di Iorio L, Landino G, Marino S, Pastore E, Fabregues F, Iraola A, Casals G, Creus M, Peralta S, Penarrubia J, Manau D, Civico S, Balasch J, Lindgren I, Giwercman YL, Celik E, Turkcuoglu I, Ata B, Karaer A, Kirici P, Berker B, Park J, Kim J, Rhee J, Krishnan M, Rustamov O, Russel R, Fitzgerald C, Roberts S, Hapuarachi S, Tan BK, Mathur RS, van de Vijver A, Blockeel C, Camus M, Polyzos N, Van Landuyt L, Tournaye H, Turhan NO, Hizli D, Kamalak Z, Kosus A, Kosus N, Kafali H, Lukaszuk A, Kunicki M, Liss J, Bednarowska A, Jakiel G, Lukaszuk K, Lukaszuk M, Olszak-Sokolowska B, Lukaszuk K, Kunicki M, Liss J, Jakiel G, Bednarowska A, Wasniewski T, Neuberg M, Lukaszuk M, Cavalcanti V, Peluso C, Lechado BL, Cordts EB, Christofolini DM, Barbosa CP, Bianco B, Venetis CA, Kolibianakis EM, Bosdou J, Tarlatzis BC, Onal M, Gungor DN, Acet M, Kahraman S, Kuijper E, Twisk J, Caanen M, Korsen T, Hompes P, Kushnir M, Rockwood A, Meikle W, Lambalk CB, Hizli D, Kamalak Z, Kosus A, Kosus N, Turhan NO, Kafali H, Yan X, Dai X, Wang J, Zhao N, Cui Y, Liu J, Yarde F, Maas AHEM, Franx A, Eijkemans MJC, Drost JT, van Rijn BB, van Eyck J, van der Schouw YT, Broekmans FJM, Martyn F, Anglim B, Wingfield M, Fang T, Yan GJ, Sun HX, Hu YL, Chrudimska J, Krenkova P, Macek M, Macek M, Teixeira da Silva J, Cunha M, Silva J, Viana P, Goncalves A, Barros N, Oliveira C, Sousa M, Barros A, Nelson SM, Lloyd SM, McConnachie A, Khader A, Fleming R, Lawlor DA, Thuesen L, Andersen AN, Loft A, Smitz J, Abdel-Rahman M, Ismail S, Silk J, Abdellah M, Abdellah AH, Ruiz F, Cruz M, Piro M, Collado D, Garcia-Velasco JA, Requena A, Kollmann Z, Bersinger NA, McKinnon B, Schneider S, Mueller MD, von Wolff M, Vaucher A, Kollmann Z, Bersinger NA, Weiss B, Stute P, Marti U, von Wolff M, Chai J, Yeung WYT, Lee CYV, Li WHR, Ho PC, Ng HYE, Kim SM, Kim SH, Jee BC, Ku S, Suh CS, Choi YM, Kim JG, Moon SY, Lee JH, Kim SG, Kim YY, Kim HJ, Lee KH, Park IH, Sun HG, Hwang YI, Sung NY, Choi MH, Cha SH, Park CW, Kim JY, Yang KM, Song IO, Koong MK, Kang IS, Kim HO, Haines C, Wong WY, Kong WS, Cheung LP, Choy TK, Leung PC, Fadini R, Coticchio G, Renzini MM, Guglielmo MC, Brambillasca F, Hourvitz A, Albertini DF, Novara P, Merola M, Dal Canto M, Iza JAA, DePablo JL, Anarte C, Domingo A, Abanto E, Barrenetxea G, Kato R, Kawachiya S, Bodri D, Kondo M, Matsumoto T, Maldonado LGL, Setti AS, Braga DPAF, Iaconelli A, Borges E, Iaconelli C, Setti AS, Braga DPAF, Figueira RCS, Iaconelli A, Borges E, Kitaya K, Taguchi S, Funabiki M, Tada Y, Hayashi T, Nakamura Y, Snajderova M, Zemkova D, Lanska V, Teslik L, Calonge RN, Ortega L, Garcia A, Cortes S, Guijarro A, Peregrin PC, Bellavia M, Pesant MH, Wirthner D, Portman L, de Ziegler D, Wunder D, Chen X, Chen SHL, Liu YD, Tao T, Xu LJ, Tian XL, Ye DSH, He YX, Carby A, Barsoum E, El-Shawarby S, Trew G, Lavery S, Mishieva N, Barkalina N, Korneeva I, Ivanets T, Abubakirov A, Chavoshinejad R, Hartshorne GM, Marei W, Fouladi-nashta AA, Kyrkou G, Trakakis E, Chrelias CH, Alexiou E, Lykeridou K, Mastorakos G, Bersinger N, Kollmann Z, Mueller MD, Vaucher A, von Wolff M, Ferrero H, Gomez R, Garcia-Pascual CM, Simon C, Pellicer A, Turienzo A, Lledo B, Guerrero J, Ortiz JA, Morales R, Ten J, Llacer J, Bernabeu R, De Leo V, Focarelli R, Capaldo A, Stendardi A, Gambera L, Marca AL, Piomboni P, Kim JJ, Choi YM, Kang JH, Hwang KR, Chae SJ, Kim SM, Yoon SH, Ku SY, Kim SH, Kim JG, Moon SY, Iliodromiti S, Kelsey TW, Anderson RA, Nelson SM, Lee HJ, Weghofer A, Kushnir VA, Shohat-Tal A, Lazzaroni E, Lee HJ, Barad DH, Gleicher NN, Shavit T, Shalom-Paz E, Fainaru O, Michaeli M, Kartchovsky E, Ellenbogen A, Gerris J, Vandekerckhove F, Delvigne A, Dhont N, Madoc B, Neyskens J, Buyle M, Vansteenkiste E, De Schepper E, Pil L, Van Keirsbilck N, Verpoest W, Debacquer D, Annemans L, De Sutter P, Von Wolff M, Kollmann Z, Vaucher A, Weiss B, Bersinger NA, Verit FF, Keskin S, Sargin AK, Karahuseyinoglu S, Yucel O, Yalcinkaya S, Comninos AN, Jayasena CN, Nijher GMK, Abbara A, De Silva A, Veldhuis JD, Ratnasabapathy R, Izzi-Engbeaya C, Lim A, Patel DA, Ghatei MA, Bloom SR, Dhillo WS, Colodron M, Guillen JJ, Garcia D, Coll O, Vassena R, Vernaeve V, Pazoki H, Bolouri G, Farokhi F, Azarbayjani MA, Alebic MS, Stojanovic N, Abali R, Yuksel A, Aktas C, Celik C, Guzel S, Erfan G, Sahin O, Zhongying H, Shangwei L, Qianhong M, Wei F, Lei L, Zhun X, Yan W, Vandekerckhove F, De Baerdemaeker A, Gerris J, Tilleman K, Vansteelandt S, De Sutter P, Oliveira JBA, Baruffi RLR, Petersen CG, Mauri AL, Nascimento AM, Vagnini L, Ricci J, Cavagna M, Massaro FC, Pontes A, Franco JG, El-khayat W, Elsadek M, Foroozanfard F, Saberi H, Moravvegi A, Kazemi M, Gidoni YS, Raziel A, Friedler S, Strassburger D, Hadari D, Kasterstein E, Ben-Ami I, Komarovsky D, Maslansky B, Bern O, Ron-El R, Izquierdo MP, Ten J, Guerrero J, Araico F, Llacer J, Bernabeu R, Somova O, Feskov O, Feskova I, Bezpechnaya I, Zhylkova I, Tishchenko O, Oguic SK, Baldani DP, Skrgatic L, Simunic V, Vrcic H, Rogic D, Juras J, Goldstein MS, Garcia De Miguel L, Campo MC, Gurria A, Alonso J, Serrano A, Marban E, Peregrin PC, Hourvitz A, Shalev L, Yung Y, Yerushalmi G, Giovanni C, Dal Canto M, Fadini R, Has J, Maman E, Monterde M, Gomez R, Marzal A, Vega O, Rubio JM, Diaz-Garcia C, Pellicer A, Eapen A, Datta A, Kurinchi-selvan A, Birch H, Lockwood GM, Ornek MC, Ates U, Usta T, Goksedef CP, Bruszczynska A, Glowacka J, Kunicki M, Jakiel G, Wasniewski T, Jaguszewska K, Liss J, Lukaszuk K, Oehninger S, Nelson S, Verweij P, Stegmann B, Ando H, Takayanagi T, Minamoto H, Suzuki N, Maman E, Rubinshtein N, Yung Y, Shalev L, Yerushalmi G, Hourvitz A, Saltek S, Demir B, Dilbaz B, Demirtas C, Kutteh W, Shapiro B, Witjes H, Gordon K, Lauritsen MP, Loft A, Pinborg A, Freiesleben NL, Mikkelsen AL, Bjerge MR, Andersen AN, Chakraborty P, Goswami SK, Chakravarty BN, Mittal M, Bajoria R, Narvekar N, Chatterjee R, Bentzen JG, Johannsen TH, Scheike T, Andersen AN, Friis-Hansen L, Sunkara S, Coomarasamy A, Faris R, Braude P, Khalaf Y, Makedos A, Kolibianakis EM, Venetis CA, Masouridou S, Chatzimeletiou K, Zepiridis L, Mitsoli A, Lainas G, Sfontouris I, Tzamtzoglou A, Kyrou D, Lainas T, Tarlatzis BC, Fermin A, Crisol L, Exposito A, Prieto B, Mendoza R, Matorras R, Louwers Y, Lao O, Kayser M, Palumbo A, Sanabria V, Rouleau JP, Puopolo M, Hernandez MJ, Diaz-Garcia C, Monterde M, Marzal A, Vega O, Rubio JM, Gomez R, Pellicer A, Ozturk S, Sozen B, Yaba-Ucar A, Mutlu D, Demir N, Olsson H, Sandstrom R, Grundemar L, Papaleo E, Corti L, Rabellotti E, Vanni VS, Potenza M, Molgora M, Vigano P, Candiani M, Andersen AN, Fernandez-Sanchez M, Bosch E, Visnova H, Barri P, Garcia-Velasco JA, De Sutter P, Fauser BJCM, Arce JC, Sandstrom R, Olsson H, Grundemar L, Peluso P, Trevisan CM, Cordts EB, Cavalcanti V, Christofolini DM, Fonseca FA, Barbosa CP, Bianco B, Bakas P, Vlahos N, Hassiakos D, Tzanakaki D, Gregoriou O, Liapis A, Creatsas G, Adda-Herzog E, Steffann J, Sebag-Peyrelevade S, Poulain M, Benachi A, Fanchin R, Gordon K, Zhang D, Andersen AN, Aybar F, Temel S, Kahraman S, Hamdine O, Macklon NS, Eijkemans MJC, Laven JS, Cohlen BJ, Verhoeff A, van Dop PA, Bernardus RE, Lambalk CB, Oosterhuis GJE, Holleboom CAG, van den Dool-Maasland GC, Verburg HJ, van der Heijden PFM, Blankhart A, Fauser BCJM, Broekmans FJ, Bhattacharya J, Mitra A, Dutta GB, Kundu A, Bhattacharya M, Kundu S, Pigny P, Dassonneville A, Catteau-Jonard S, Decanter C, Dewailly D, Pouly J, Olivennes F, Massin N, Celle M, Caizergues N, Fleming R, Gaudoin M, Messow M, McConnachie A, Nelson SM, Dewailly D, Vanhove L, Peigne M, Thomas P, Robin G, Catteau-Jonard S. Reproductive endocrinology. Hum Reprod 2013. [DOI: 10.1093/humrep/det221] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Givvimani S, Kundu S, Narayanan N, Armaghan F, Qipshidze N, Pushpakumar S, Vacek TP, Tyagi SC. TIMP-2 mutant decreases MMP-2 activity and augments pressure overload induced LV dysfunction and heart failure. Arch Physiol Biochem 2013; 119:65-74. [PMID: 23398532 PMCID: PMC3881363 DOI: 10.3109/13813455.2012.755548] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Pressure overload induces cardiac extracellular matrix (ECM) remodelling and results in heart failure. ECM remodelling by matrix metalloproteinases (MMPs) is primarily regulated by their target inhibitors, tissue inhibitor of matrix metalloproteinases (TIMPs). It is known that TIMP-2 is highly expressed in myocardium and is required for cell surface activation of pro-MMP-2. We and others have reported that imbalance between angiogenic growth factors and anti-angiogenic factors results in transition from compensatory cardiac hypertrophy to heart failure. We previously reported the pro-angiogenic role of MMP-2 in cardiac compensation, however, the specific role of TIMP-2 during pressure overload is yet unclear. We hypothesize that genetic ablation of TIMP-2 exacerbates the adverse cardiac matrix remodelling due to lack of pro-angiogenic MMP-2 and increase in anti-angiogenic factors during pressure overload stress and results in severe heart failure. To verify this, ascending aortic banding (AB) was created to mimic pressure overload, in wild type C57BL6/J and TIMP-2-/- (model of MMP-2 deficiency) mice. Left ventricular (LV) function assessed by echocardiography and pressure-volume loop studies showed severe LV dysfunction in TIMP-2-/- AB mice compared to controls. Expression of MMP-2, vascular endothelial growth factor (VEGF) was decreased and expression of MMP-9, anti-angiogenic factors endostatin and angiostatin was increased in TIMP-2-/- AB mice compared with wild type AB mice. Connexins (Cx) are the gap junction proteins that are widely present in the myocardium and play an important role in endothelial-myocyte coupling. Our results showed that expression of Cx 37 and 43 was decreased in TIMP-2-/- AB mice compared with corresponding wild type controls. These results suggest that genetic ablation of TIMP-2 decrease the expression of pro-angiogenic MMP-2, VEGF and increases anti-angiogenic factors that results in exacerbated abnormal ventricular remodelling leading to severe heart failure.
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Chopra S, Dhanda S, Verma A, Engineer R, Upasani M, Kundu S, Mahantshetty U, Shrivastava S. PO-0733: Diffusion weighted magnetic resonance imaging predicts for relapse free survival in patients with vault cancers. Radiother Oncol 2013. [DOI: 10.1016/s0167-8140(15)33039-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Karmakar A, Majumdar S, Kundu S, Nath TK, Giri S. A Griffiths-like phase in antiferromagnetic R0.5Eu0.5MnO3 (R = Pr, Nd, Sm). JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2013; 25:066006. [PMID: 23315393 DOI: 10.1088/0953-8984/25/6/066006] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report a Griffiths-like phase in isovalent doped rare-earth manganites R(0.5)Eu(0.5)MnO(3) (R = Pr, Nd, Sm). Rietveld refinement of the structural data reveals strong orthorhombic and Jahn-Teller distortions. The dc and ac magnetic studies nicely demonstrate aspects of Griffiths phase-like behaviour. The presence of short range ferromagnetically correlated spin clusters is observed above the antiferromagnetic transition temperature. A disorder driven phase inhomogeneity arising from strong structural distortion is the possible origin of this behaviour.
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Suneetha T, Kundu S, Kashyap SC, Gupta HC, Nath TK. Superparamagnetic state by linear and non-linear AC magnetic susceptibility in Mn0.5Zn0.5Fe2O4 ferrites nanoparticles. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2013; 13:270-278. [PMID: 23646726 DOI: 10.1166/jnn.2013.7092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/02/2023]
Abstract
The Mn0.5Zn0.5Fe2O4 nanoparticles has been synthesized using citrate-gel-precursor method. The direct mixing of nitrates and acetates yields homogeneous nanoparticles. Phase formation and crystal structure of the synthesized powder were examined through the X-ray diffraction (XRD). Fourier transform infrared (FTIR) spectra of the sample confirm the spinel structure. The average particle size was determined by transmission electron microscopy (TEM) and field emission scanning electron microscopy (FESEM). The average particle size is found to be about 13 nm. Superparamagnetic-like nature of the nanoparticles of Mn0.5Zn0.5Fe2O4 has been revealed through various dc and linear and non-linear ac magnetization measurements. However, the nanoparticles do not behave like ideal non-interacting superparamagnets. The magnetic particle size is found to be about 8 nm with saturation magnetization about 18.1 emu/g. The blocking temperature (T(B)) of the nanoparticle assembly is found to be about 150 K as observed from dc and ac magnetization measurements. The frequency dependence of the blocking temperature (T(B)) is found to follow Vogel-Fulcher law. The associated characteristic time tau0 is found to be 10(-5) s. This value is different from that generally found for non-interacting superparamagnetic (SPM) systems (tau0 = 10(-9)-10(-10) s).
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Ray S, Kundu S, Chakrabarti P, Saha M. Pure red cell aplasia following autoimmune hemolytic anemia: An enigma. J Postgrad Med 2013; 59:51-3. [DOI: 10.4103/0022-3859.109495] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022] Open
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Dey A, Biswas D, Saha SK, Kundu S, Kundu S, Sengupta A. Comparison study of clinicoradiological profile of primary lung cancer cases: an Eastern India experience. Indian J Cancer 2012; 49:89-95. [PMID: 22842174 DOI: 10.4103/0019-509x.98930] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
CONTEXT According to the first population-based cancer registry from eastern part of India, Kolkata and its surrounding areas have the highest prevalence of lung cancer in India. However, there is very limited data from this part of the country. AIMS The aim of this study is to find out the demographic and clinicoradiological profile of primary bronchogenic carcinoma. SETTINGS AND DESIGN This is a retrospective review of lung cancer cases diagnosed in two tertiary institutes of Kolkata over a period of 4 years. MATERIALS AND METHODS We have reviewed the cases with proven histological or cytological diagnosis of primary bronchogenic carcinoma and chi-square test is done to calculate statistical significance. RESULTS Out of 607 patients, male 489 and female 118, 67.7% are from rural area, 67.2% are smoker and only 9.4% are ≤40 years of age. Smoking is the major risk factor for primary lung cancer (P = 0.000) but no significance could be established with the different histological subtypes (P = 0.207). Though squamous cell carcinoma (SCC) is the most predominant variety (35.1%), adenocarcinoma and undifferentiated type are overrepresented in ≤40 years. SCC occurs at a significantly higher age group (60.84 ± 12.16 years) than other subtypes (P = 0.000). At least 55.2% cases of nonsmall cell lung cancer and 54% of small cell lung cancer presented in very advanced stage. CONCLUSIONS SCC is the most common histological subtype of primary bronchogenic carcinoma. The relatively increased frequency of adenocarcinoma in our study as compared to other studies from India is probably due to higher proportion of nonsmokers.
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Ray S, Kundu S, Goswami M, Maitra S, Talukdar A, Maiti A. An unusual cause of muscle weakness: a diagnostic challenge for clinicians. CASE REPORTS 2012; 2012:bcr.01.2012.5625. [DOI: 10.1136/bcr.01.2012.5625] [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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Kundu S, Nath TK. Size-dependent electronic-transport mechanism and sign reversal of magnetoresistance in Nd0.5Sr0.5CoO3. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:236005. [PMID: 22576276 DOI: 10.1088/0953-8984/24/23/236005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A detailed investigation of electronic-transport properties of Nd(0.5)Sr(0.5)CoO(3) has been carried out as a function of grain size ranging from micrometre order down to an average size of 28 nm. Interestingly, we observe a size induced metal-insulator transition in the lowest grain-size sample while the bulk-like sample is metallic in the whole measured temperature regime. An analysis of the temperature dependent resistivity in the metallic regime reveals that the electron-electron interaction is the dominating mechanism while other processes like electron-magnon and electron-phonon scatterings are also likely to be present. The fascinating observation of enhanced low temperature upturn and minimum in resistivity on reduction of grain size is found due to electron-electron interaction (quantum interference effect). This effect is attributed to enhanced disorder on reduction of grain size. Interestingly, we observe a cross over from positive to negative magnetoresistance in the low temperature regime as the grain size is reduced. This observed sign reversal is attributed to enhanced phase separation on decreasing the grain size of the cobaltite.
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Ray S, Kundu S, Goswami M, Sarkar D, Saha M. Isolated tubercular splenic abscess: can we defer splenectomy? Our single experience with anti-tuberculous therapy alone. Indian J Med Microbiol 2012; 30:101-3. [PMID: 22361772 DOI: 10.4103/0255-0857.93060] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Isolated splenic tuberculosis is an exceedingly rare clinical condition. Microbiological confirmation of diagnosis in such cases is quite difficult. We encountered the case of a 35-year-old female, who presented with persistent low-grade fever and weight loss. The CT scan of the abdomen revealed multiple hypodense splenic lesions. No primary focus of infection was detected in any other organs. Fine needle aspiration of splenic lesion revealed acid-fast bacilli on Ziehl-Neelsen stain. With anti-tuberculous therapy, the lesions regressed significantly in size. We stress that splenic tuberculosis should be considered as a diagnostic possibility even in immunocompetent individuals and choose combination antituberculous therapy as the first line treatment with consideration of splenectomy depending on response.
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Karmakar A, Majumdar S, Kundu S, Nath TK, Giri S. Observation of Griffiths phase in antiferromagnetic La(0.32)Eu(0.68)MnO3. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2012; 24:126003. [PMID: 22370010 DOI: 10.1088/0953-8984/24/12/126003] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
We report the Griffiths phase (GP) scenario for isovalent doping in antiferromagnetic La(0.32)Eu(0.68)MnO(3). Rietveld refinement of structural data displays strong crystal structural distortion. The dc and ac magnetic studies nicely demonstrate unambiguous aspects of robust GP. The presence of ferromagnetically correlated spin clusters is found above the transition temperature, T(N). The disorder-driven phase inhomogeneity is correlated to strong structural distortion, giving rise to the GP. This is an unique example in manganite where double exchange interaction does not play any role for the observed phenomenon.
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Kundu S, Nath TK, Nigam AK, Maitra T, Taraphder A. Metallicity and ferromagnetism in nanosystem of charge ordered Nd0.5Sr0.5MnO3. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2012; 12:943-949. [PMID: 22629876 DOI: 10.1166/jnn.2012.5193] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
The fascinating phenomenon of destabilization of charge/orbital order in Nd0.5Sr0.5MnO3 with the reduction of grain size is critically investigated. Based on our magnetic and transport experiments followed by a theoretical analysis, we analyze various possible mechanisms and try to delineate a universal scenario behind this phenomenon. We revisit this issue carefully and discuss various evidences from experiments in nano and bulk manganites on the absence of correlation between size reduction and pressure effects on manganites. We propose a phenomenological model based on enhanced surface disorder to explain the appearance of weak ferromagnetism and metallicity in nanosize Nd0.5Sr0.5MnO3 system. All evidence seems to suggest that the transport is mediated through the surface via enhanced density of states in the nanometric grains. We provide theoretical support for this by performing an ab-initio electronic structure calculation as well as from a recent numerical simulation and argue that the mechanism is likely to be general in all nanosize charge ordered manganites.
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Nesbitt-Hawes E, Campbell N, Won H, Maley P, Henry A, Abbott J, Potdar N, Mason-Birks S, Elson CJ, Gelbaya TA, Nardo LG, Stavroulis A, Nnoaham K, Hummelshoj L, Zondervan K, Saridogan E, GSWH Consortium WERF, Chamie LP, Soares ACP, Kimati CT, Gomes C, Fettback P, Riboldi M, Serafini P, Lalitkumar S, Menezes J, Evdokia D, Gemzell-Danielsson K, Lalitkumar PGL, Bailey J, Newman TA, Johnston A, Zisimopoulou K, White M, Sadek K, Shreeve N, Macklon N, Cheong Y, Al-Akoum M, Akoum A, Giles J, Garrido N, Vidal C, Mondion M, Gallo C, Ramirez J, Pellicer A, Remohi J, Ghosh S, Chattopadhyay R, Jana S, Goswami SK, Bose G, Chakravarty M, Chowdhuri K, Chakravarty BN, Kendirci Ceviren A, Ozcelik Tanriverdi N, Urfan A, Donmez L, Isikoglu M, Romano A, Schreinemacher MH, Backes WH, Slenter JM, Xanthoulea SA, Delvoux B, van Winden L, Beets-Tan RG, Evers JLH, Dunselman GAJ, Jana SK, Chaudhury K, Chattopadhyay R, Chakravarty BN, Maruyama T, Yamasaki A, Miyazaki K, Arase T, Uchida H, Yoshimura Y, Kaser D, Ginsburg E, Missmer S, Correia K, Racowsky C, Streuli I, Chouzenoux S, de Ziegler D, Chereau C, Weill B, Chapron C, Batteux F, Arianmanesh M, Fowler PA, Al-Gubory KH, Urata Y, Osuga Y, Izumi G, Nagai M, Takamura M, Yamamoto N, Saito A, Hasegawa A, Takemura Y, Harada M, Hirata T, Hirota Y, Yoshino O, Koga K, Taketani Y, Mohebbi A, Janan A, Nasri S, Lakpour MR, Ramazanali F, Moini A, Aflatoonian R, Germeyer A, Novak O, Renke T, Jung M, Jackus J, Toth B, Strowitzki T, Bhattacharya J, Mitra A, Kundu S, Pal M, Kundu A, Gumusel A, Basar M, Yaprak E, Aslan E, Arda O, Ilvan S, Kayisli U, Guzel E, Haouzi D, Monzo C, Lehmann S, Hirtz C, Tiers L, Hamamah S, Choi D, Choi J, Jo M, Lee E, Shen X, Wang BIN, Li X, Tamura I, Maekawa R, Asada H, Tamura H, Sugino N, Tamura H, Tamura I, Maekawa R, Asada H, Sugino N, Liu H, Jiang Y, Chen J, Zhu L, Shen X, Wang B, Yan G, Sun H, Coughlan C, Sinagra M, Ledger W, Li TC, Laird SM, Dafopoulos K, Vrekoussis T, Chalvatzas N, Messini CI, Kalantaridou S, Georgoulias P, Messinis IE, Makrigiannakis A, Xue Q, Xu Y, Zuo WL, Zhang L, Shang J, Zhu SN, Bulun SE, Tomassetti C, Geysenbergh B, Meuleman C, Fieuws S, D'Hooghe T, Suginami K, Sato Y, Horie A, Matsumoto H, Fujiwara H, Konishi I, Jung Y, Cho S, Choi Y, Lee B, Seo S, Urman B, Yakin K, Oktem O, Alper E, Taskiran C, Aksoy S, Takeuchi K, Kurematsu T, Yu-ki Y, Fukumoto Y, Homan Y, Sata Y, Kuroki Y, Takeuchi M, Awata S, Muneyyirci-Delale O, Charles C, Anopa J, Osei-Tutu N, Dalloul M, Weedon J, Muney A, Stratton P, Yilmaz B, Kilic S, Aksakal O, Kelekci S, Aksoy Y, Lordlar N, Sut N, Gungor T, Chan J, Tan CW, Lee YH, Tan HH, Choolani M, Griffith L, Oldeweme J, Barcena de Arellano ML, Reichelt U, Schneider A, Mechsner S, Barcena de Arellano ML, Munch S, Vercellino GF, Chiantera V, Schneider A, Mechsner S, Santoro L, D'Onofrio F, Campo S, Ferraro PM, Tondi P, Gasbarrini A, Santoliquido A, Jung MH, Kim HY, Barcena de Arellano ML, Arnold J, Vercellino GF, Chiantera V, Schneider A, Mechsner S, Arnold J, Barcena de Arellano ML, Buttner A, Vercellino GF, Chiantera V, Schneider A, Mechsner S, Karaer A, Celik O, Bay Karabulut A, Celik E, Kiran TR, Simsek OY, Yilmaz E, Turkcuoglu I, Tanrikut E, Alieva K, Kulakova E, Ipatova M, Smolnikova V, Kalinina E. ENDOMETRIOSIS, ENDOMETRIUM, IMPLANTATION AND FALLOPIAN TUBE. Hum Reprod 2012. [DOI: 10.1093/humrep/27.s2.78] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
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Mitra S, Tapadar SR, Banerjee D, Bhattacharjee S, Dey S, Kundu S. Pulmonary disease due to Mycobacterium massiliense. THE INDIAN JOURNAL OF CHEST DISEASES & ALLIED SCIENCES 2012; 54:53-57. [PMID: 22779125] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 06/01/2023]
Abstract
We report a case of a patient suffering from multidrug-resistant pulmonary tuberculosis (MDR-PTB) who later developed an invasive infection of the respiratory tract with a rapidly growing non-tuberculous mycobacteria (NTM), recently identified as Mycobacterium massiliense, closely related to M. abscessus. To the best of our knowledge, this is the first case of M. massiliense infection being reported from India.
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Kundu S, Jones CG, Prys-Jones RP, Groombridge JJ. The evolution of the Indian Ocean parrots (Psittaciformes): extinction, adaptive radiation and eustacy. Mol Phylogenet Evol 2011; 62:296-305. [PMID: 22019932 DOI: 10.1016/j.ympev.2011.09.025] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2011] [Revised: 09/12/2011] [Accepted: 09/30/2011] [Indexed: 10/16/2022]
Abstract
Parrots are among the most recognisable and widely distributed of all bird groups occupying major parts of the tropics. The evolution of the genera that are found in and around the Indian Ocean region is particularly interesting as they show a high degree of heterogeneity in distribution and levels of speciation. Here we present a molecular phylogenetic analysis of Indian Ocean parrots, identifying the possible geological and geographical factors that influenced their evolution. We hypothesise that the Indian Ocean islands acted as stepping stones in the radiation of the Old-World parrots, and that sea-level changes may have been an important determinant of current distributions and differences in speciation. A multi-locus phylogeny showing the evolutionary relationships among genera highlights the interesting position of the monotypic Psittrichas, which shares a common ancestor with the geographically distant Coracopsis. An extensive species-level molecular phylogeny indicates a complex pattern of radiation including evidence for colonisation of Africa, Asia and the Indian Ocean islands from Australasia via multiple routes, and of island populations 'seeding' continents. Moreover, comparison of estimated divergence dates and sea-level changes points to the latter as a factor in parrot speciation. This is the first study to include the extinct parrot taxa, Mascarinus mascarinus and Psittacula wardi which, respectively, appear closely related to Coracopsis nigra and Psittacula eupatria.
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Kundu S, Mitra R, Chatterjee S, Ghosh A. Young male with systemic lupus erythematosus presenting with sensorineural deafness with immune suppression induced miliary tuberculosis. THE JOURNAL OF THE ASSOCIATION OF PHYSICIANS OF INDIA 2011; 59:662-664. [PMID: 22479750] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
A 32 year male presented with deafness and other classical symptoms suggestive of SLE. Subsequent serological investigations confirmed the diagnosis. Renal biopsy showed the presence of SLE induced Grade V nephropathy. Patient was started on NIH protocol for lupus nephritis on which he was doing well. After two years, he presented with symptoms of miliary tuberculosis and was started on ATD. Subsequently, he developed ATD induced hepatotoxicity and had to be switched over to Inj. Streptomycin containing regimen. We thought to share this clinical experience, as we found it a challenge to manage tuberculosis in such a setting, where a fine balance had to be maintained between immunosuppression for SLE and therapy of TB, and an ototoxic drug had to be used in a patient with deafness induced by SLE.
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Pickles RSA, Groombridge JJ, Zambrana Rojas VD, Van Damme P, Gottelli D, Kundu S, Bodmer R, Ariani CV, Iyengar A, Jordan WC. Evolutionary history and identification of conservation units in the giant otter, Pteronura brasiliensis. Mol Phylogenet Evol 2011; 61:616-27. [PMID: 21925282 DOI: 10.1016/j.ympev.2011.08.017] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Revised: 08/01/2011] [Accepted: 08/17/2011] [Indexed: 11/29/2022]
Abstract
The giant otter, Pteronura brasiliensis, occupies a range including the major drainage basins of South America, yet the degree of structure that exists within and among populations inhabiting these drainages is unknown. We sequenced portions of the mitochondrial DNA (mtDNA) cytochrome b (612bp) and control region (383 bp) genes in order to determine patterns of genetic variation within the species. We found high levels of mtDNA haplotype diversity (h = 0.93 overall) and support for subdivision into four distinct groups of populations, representing important centers of genetic diversity and useful units for prioritizing conservation within the giant otter. We tested these results against the predictions of three hypotheses of Amazonian diversification (Pleistocene Refugia, Paleogeography, and Hydrogeology). While the phylogeographic pattern conformed to the predictions of the Refugia Hypothesis, molecular dating using a relaxed clock revealed the phylogroups diverged from one another between 1.69 and 0.84 Ma, ruling out the influence of Late Pleistocene glacial refugia. However, the role of Plio-Pleistocene climate change could not be rejected. While the molecular dating also makes the influence of geological arches according to the Paleogeography Hypothesis extremely unlikely, the recent Pliocene formation of the Fitzcarrald Arch and its effect of subsequently altering drainage pattern could not be rejected. The data presented here support the interactions of both climatic and hydrological changes resulting from geological activity in the Plio-Pleistocene, in shaping the phylogeographic structure of the giant otter.
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Kundu S, Nath TK. Evidence of electronic phase arrest and glassy ferromagnetic behaviour in (Nd(0.4)Gd(0.3))Sr(0.3)MnO3 manganite: comparative study between bulk and nanometric samples. JOURNAL OF PHYSICS. CONDENSED MATTER : AN INSTITUTE OF PHYSICS JOURNAL 2011; 23:356001. [PMID: 21849715 DOI: 10.1088/0953-8984/23/35/356001] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/31/2023]
Abstract
The effect of the doping of rare earth Gd(3+) ions replacing Nd(3+) in Nd(0.7)Sr(0.3)MnO(3) is investigated in detail. Measurements of resistivity, magnetoresistance, magnetization, and linear and nonlinear ac magnetic susceptibility on chemically synthesized (Nd(0.7-x)Gd(x))Sr(0.3)MnO(3) show various interesting features with doping level x=0.3. A comparative study has been carried out between a bulk and a nanometric sample (grain size ∼60 nm) synthesized from the same as a prepared powder to maintain an identical stoichiometry. The resistivity of the samples shows strong dependence on the magnetic field-temperature history. The magnetoresistance of the samples also shows strong irreversibility with respect to sweeping of the field between the highest positive and negative values. Moreover, the resistivity is found to increase with time after field cooling and then switching off the field. All these phenomena have been attributed to phase separation effects and the arrest of phases in the samples. Furthermore, the bulk sample displays a spin glass like behaviour as evident from the frequency dependence of linear ac magnetic susceptibility and critical divergence of the nonlinear ac magnetic susceptibility. The experimentally obtained characteristic time τ(0) after dynamical scaling analysis of the frequency dependence of the ac susceptibility is found to be 10(-17) s which implies that the system is different from a canonical spin glass. An unusual frequency dependence of the second harmonic of ac susceptibility around the magnetic transition temperature led us to designate the magnetic state of the sample to be glassy ferromagnetic. On reduction of the grain size low field magnetoresistance and phase arrest phenomena are found to enhance but the glassy state is observed to be destabilized in the nanometric sample.
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Chatterjee S, Biswas T, Dutta A, Sengupta G, Mitra A, Kundu S. Clinical effectiveness and safety of gemifloxacin versus cefpodoxime in acute exacerbation of chronic bronchitis: A randomized, controlled trial. Indian J Pharmacol 2011; 43:40-4. [PMID: 21455420 PMCID: PMC3062119 DOI: 10.4103/0253-7613.75667] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/07/2010] [Revised: 07/07/2010] [Accepted: 10/21/2010] [Indexed: 12/02/2022] Open
Abstract
Objective: Acute exacerbation of chronic bronchitis (AECB) is a commonly encountered problem and those suspected to be due to bacterial infections require antibiotic therapy. This randomized, controlled trial was designed to evaluate the effectiveness and safety of gemifloxacin, a new fluoroquinolone, versus cefpodoxime, an oral third-generation cephalosporin, for the treatment of mild to moderately severe cases of AECB. Materials and Methods: Adult subjects diagnosed with chronic bronchitis with clinical symptoms suggestive of an Anthonisen type II acute exacerbation (any two of the following criteria – increased dyspnea, cough, sputum purulence) were eligible and those fulfilling the subject selection criteria were randomized to receive either gemifloxacin 320 mg once daily or cefpodoxime 200 mg twice daily orally for 7 days. The primary outcome measure was clinical success rate at day 14 visit and the secondary outcome measures were changes in Clinical Global impression (CGI) scales and incidence of adverse events (AEs). Fifty-two subjects were enrolled: 26 in gemifloxacin group and 24 in the other and 2 were lost to follow-up. Results: The clinical success rates were comparable (84.6% in gemifloxacin group versus 83.3% in cefpodoxime group) and no statistically significant difference was observed between the groups. AEs were mild, self-limiting and few (two in gemifloxacin and three in cefpodoxime arm) and tolerability was also good. Conclusion: The results of this randomized, single-blind trial demonstrated that a 7-day course of gemifloxacin is therapeutically comparable to cefpodoxime in terms of both clinical effectiveness and safety for the treatment of type II Anthonisen category AECB patients.
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Tuan J, Jeilan M, Kundu S, Nicolson W, Chung I, Stafford PJ, Ng GA. Regional fractionation and dominant frequency in persistent atrial fibrillation: effects of left atrial ablation and evidence of spatial relationship. Europace 2011; 13:1550-6. [DOI: 10.1093/europace/eur174] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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Nicolson WB, Steadman CD, Brown P, Jeilan M, Yusuf S, Kundu S, Sandilands AJ, Stafford PJ, Schlindwein FS, McCann GP, Ng GA. 159 Pilot Study exploring the regional repolarisation instability index in relation to myocardial heterogeneity and prediction of ventricular arrhythmia and death. BRITISH HEART JOURNAL 2011. [DOI: 10.1136/heartjnl-2011-300198.159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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Pinto LFV, Kundu S, Brogueira P, Cruz C, Fernandes SN, Aluculesei A, Godinho MH. Cellulose-based liquid crystalline photoresponsive films with tunable surface wettability. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2011; 27:6330-6337. [PMID: 21491848 DOI: 10.1021/la200422q] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
We report on a new type of liquid crystalline cellulosic films with light controllable reversible wettability. The films are prepared from a thermotropic cellulose derivative functionalized with azo-containing groups. These groups exhibit dynamic changes in interfacial properties in response to UV irradiation. The UV irradiation induces trans-to-cis isomerization in the azobenzene moiety, which causes a conformational change in the upper molecular layers of the thin films. These changes originate a hydrophobic to comparatively hydrophilic transformation of the surface. The reversible wettability of the surface results from the cis/trans photo and thermal isomerization. The UV-vis absorption spectra, as well as contact angle measurements with UV irradiation, clearly support the understanding of the phenomenon. This type of surface design enables the amplification of molecular level conformational transitions to macroscopic changes in interface properties using the means of isomerism. This opens new opportunities in surface engineering using eco-friendly cellulose manipulation.
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Oshtrakh M, Kumar A, Kundu S, Berkovsky A, Semionkin V. Study of human, rabbit and pig oxyhemoglobins using high velocity resolution Mössbauer spectroscopy in relation to their structural and functional variations. J Mol Struct 2011. [DOI: 10.1016/j.molstruc.2010.11.035] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Mitra S, Kundu S, Pattari SK, Ghosal AG. Metastatic pleural effusion: a rare presentation of salivary gland adenoid cystic carcinoma. THE INDIAN JOURNAL OF CHEST DISEASES & ALLIED SCIENCES 2011; 53:107-110. [PMID: 21545072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/30/2023]
Abstract
Adenoid cystic carcinoma, an uncommon malignant salivary gland neoplasm, is known for its long clinical course, indolent growth, local recurrence and late distant metastasis. We report an unusual case of adenoid cystic carcinoma of the palate in a 64-year-old woman, undiagnosed for more than 15 years, who presented as malignant pleural effusion.
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