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Pal S, Samanta P, Kole D, Mukherjee AK, Ghosh AR. Acute Toxicity and Oxidative Stress Responses in Tadpole of Skittering Frog, Euphlyctis cyanophlyctis (Schneider, 1799) to Sodium Fluoride Exposure. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2018; 100:202-207. [PMID: 29294177 DOI: 10.1007/s00128-017-2264-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Accepted: 12/23/2017] [Indexed: 06/07/2023]
Abstract
This study evaluated the acute toxicity and oxidative stress responses to sodium fluoride (NaF) exposure in tadpoles of the skittering frog, Euphlyctis cyanophlyctis (Schneider 1799). The 96 h LC50 value was found to be 647 mg/L. Biochemical tests were conducted at 10%, 20%, 30%, 40%, 50%, 60%, 70% and 80% of the 96 h LC50 dose. Cholinesterase (ChE) activity was unaffected. Lipid peroxidation levels significantly increased (p < 0.05) at lower concentrations, but decreased significantly with increasing NaF concentrations. Glutathione S-transferase (GST) activity also increased significantly with increasing NaF concentrations. Alkaline phosphatase levels steadily decreased with increasing concentrations of NaF. The responses for the biochemical tests were summarized using an integrated biomarker response (IBR) index approach, which indicated that lower NaF exposures caused higher levels of oxidative stress responses overall. These findings suggest that the IBR index approach may be useful for the quantitative monitoring of NaF toxicity in amphibians.
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Samanta P, Kumari P, Pal S, Mukherjee AK, Ghosh AR. Histopathological and Ultrastructural Alterations in Some Organs of Oreochromis niloticus Exposed to Glyphosate-based Herbicide, Excel Mera 71. J Microsc Ultrastruct 2018; 6:35-43. [PMID: 30023265 PMCID: PMC6014246 DOI: 10.4103/jmau.jmau_8_18] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022] Open
Abstract
Oreochromis niloticus was exposed to glyphosate-based herbicide Excel Mera 71 for 30 days under field and laboratory conditions to investigate the histopathological and ultrastructural responses in gill, liver, and kidney. Gill displayed degenerative changes in the pillar cells of gill epithelium, curling of secondary lamella, and appearance of globular structure in laboratory condition under light microscopy. Scanning electron microscopic (SEM) observations revealed loss of microridges, disappearance of normal array of microridges, and damage in stratified epithelial cells under both the conditions, while severe vacuolation and necrosis were prominent under transmission electron microscopic (TEM) study in the laboratory condition. In liver, excess fat deposition and acentric nuclei in the laboratory condition were prominent under light microscopic and SEM study. TEM study showed necrosis in mitochondria, cytoplasmic vacuolation, degeneration in endoplasmic reticulum (ER), and reduced amount of glycogen droplets, but under field condition, lesions were less. Kidney showed fragmented glomerulus, excessive fat deposition, and hypertrophied nuclei under light microscope, while topological study showed shrinkage of glomerulus and degenerative changes under laboratory condition. TEM study also confirmed necrosis in mitochondria, dilation and fragmentation of ER, and appearance of severe vacuolation in the laboratory study, but no significant alterations were observed in field under SEM and TEM study. Therefore, the present study depicts that Excel Mera 71 caused comparatively less pathological lesions under field than laboratory condition, and finally, these responses could be considered as bioindicators for toxicity study in aquatic ecosystem.
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Kilambi R, Singh AN, Madhusudhan KS, Das P, Pal S. Choledochal cyst of the proximal cystic duct: a taxonomical and therapeutic conundrum. Ann R Coll Surg Engl 2017; 100:e34-e37. [PMID: 29181996 DOI: 10.1308/rcsann.2017.0201] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
Isolated choledochal cysts involving the cystic duct are rare. We present a case of a choledochal cyst involving only the proximal cystic duct, and discuss the taxonomic and therapeutic challenges. There is a need for a clearly defined classification system for these cysts as they may be categorised as either type II or type VI cysts. The optimal treatment remains debatable, with some authors recommending a bilioenteric reconstruction owing to the wide cystic duct-bile duct junction. However, we suggest that a cholecystectomy should be performed with examination of the specimen and frozen section in case of any abnormality rather than upfront bile duct excision. In addition, given the rarity of this condition and the paucity of long-term data, we recommend meticulous follow-up for development of any malignancy.
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Uthappa CK, Allam RR, Pant R, Pal S, Dinaker M, Oruganti G, Yeldandi VV. Pre-exposure prophylaxis: awareness, acceptability and risk compensation behaviour among men who have sex with men and the transgender population. HIV Med 2017; 19:243-251. [PMID: 29178158 DOI: 10.1111/hiv.12572] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 10/13/2017] [Indexed: 11/27/2022]
Abstract
OBJECTIVES This exploratory study examined the facilitators of and barriers to acceptance of pre-exposure prophylaxis (PrEP) and potential risk compensation behaviour emerging from its use among men who have sex with men (MSM) and transgender individuals (TGs) in India. METHODS A questionnaire was administered to 400 individuals registered with a targeted intervention programme. Logistic regression models were used to identify facilitators of and barriers to PrEP acceptance. RESULTS The respondents consisted of 68% MSM and 32% TGs. Risk behaviour categorization identified 40% as low risk, 41% as medium risk and, 19% as high risk for HIV infection. About 93% of the respondents were unaware of PrEP, but once informed about it, 99% were willing to use PrEP. The facilitators of PrEP acceptance were some schooling [odds ratio (OR) 2.16; P = 0.51], being married or in a live-in relationship (OR 2.08; P = 0.46), having a high calculated risk (OR 3.12; P = 0.33), and having a high self-perceived risk (OR 1.8; P = 0.35). Increasing age (OR 2.12; P = 0.04) was a significant barrier. TGs had higher odds of acceptance of PrEP under conditions of additional cost (OR 2.12; P = 0.02) and once-daily pill (OR 2.85; P = 0.04). Individuals identified as low risk for HIV infection showed lower odds of potential risk compensation, defined as more sexual partners (OR 0.8; P = 0.35), unsafe sex with new partners (OR 0.71; P = 0.16), and decreased condom use with regular partners (OR 0.95; P = 0.84), as compared with medium-risk individuals. The associations, although not statistically significant, are nevertheless important for public health action given the limited scientific evidence on PrEP use among MSM and TGs in India. CONCLUSIONS With high acceptability and a low likelihood of risk compensation behaviour, PrEP can be considered as an effective prevention strategy for HIV infection among MSM and TGs in India.
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Powles T, Motzer R, George D, Jonasch E, Pal S, Tannir N, Signoretti S, Mai T, Scheffold C, Wang E, Aftab D, Escudier B, Choueiri T. Outcomes based on plasma biomarkers in METEOR, a randomized phase 3 trial of cabozantinib (c) vs everolimus (e) in advanced renal cell carcinoma (rcc). Ann Oncol 2017. [DOI: 10.1093/annonc/mdx371.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Juyal D, Rathaur VK, Pal S, Sharma N. Salmonella Enterica Serotype Paratyphi B - An Unusual Pathogen in Sepsis Neonatorum. Kathmandu Univ Med J (KUMJ) 2017; 17:182-184. [PMID: 34547854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Sepsis remains a significant cause of morbidity and mortality in newborns especially in the developing countries. Salmonellosis, a global public health problem is common in tropical countries. However Salmonella enterica serotype Paratyphi B causing neonatal sepsis is rare and the survival depends on high index of suspicion and appropriate empiric therapy. We here report a case of sepsis neonatorum due to Salmonella enterica serotype Paratyphi B in a four day old baby girl. Salmonella infections should be considered in the differential diagnosis of neonatal sepsis, especially in endemic areas.
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Samanta P, Kumari P, Pal S, Mukherjee AK, Ghosh AR. Histopathological and ultrastructural alterations in some organs of Oreochromis niloticus exposed to glyphosate-based herbicide, Excel Mera 71. J Microsc Ultrastruct 2017. [DOI: 10.1016/j.jmau.2017.03.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Fernandes PM, Macleod MR, Bateman A, Abrahams S, Pal S. Conjugal amyotrophic lateral sclerosis: a case report from Scotland. BMC Neurol 2017; 17:64. [PMID: 28356084 PMCID: PMC5372255 DOI: 10.1186/s12883-017-0847-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2016] [Accepted: 03/23/2017] [Indexed: 11/10/2022] Open
Abstract
Background Conjugal amyotrophic lateral sclerosis is rare, with significant effects on psychological and care needs. We report a case of conjugal amyotrophic lateral sclerosis disease from central Scotland. This case is particularly unusual as both patients were diagnosed within an 18-month period and experienced the disease simultaneously, with similar symptomatology and progression. Case presentation Patient A was a 71-year-old man who presented with unilateral arm weakness and wasting. Patient B was a 68-year-old woman who presented with unilateral shoulder and elbow weakness. Diagnosis of amyotrophic lateral sclerosis was made within a few months of presentation in both cases, based on typical clinical symptomatology together with supportive neurophysiological testing. Interventions included enteral feeding and non-invasive ventilation. The time period between symptom onset and death was 5 years for Patient A and 3.5 years for Patient B. Conclusion This case illustrates two main points: the care issues surrounding cases of conjugal neurological disease, and the psychological issues in these patients. There are significant care issues arising when co-habiting couples both develop severe functionally limiting neurological diseases at the same time. The more slowly progressive nature of Patient A’s disease may be at least partially explained by the support he was able to receive from Patient B before she developed symptoms. Secondly, there are important psychological effects of living with someone with the same – but more advanced – progressive and incurable neurological disease. Thus, Patient B was reluctant to have certain interventions that she had observed being given to her husband. Lastly, no plausible shared environmental risk factors were identified, implying that the co-occurrence of ALS in this couple was a random association.
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Seisen T, Sonpavde G, Kachroo N, Lipsitz S, Leow J, Menon M, Gild P, Von Landenberg N, Rouprêt M, Kibel A, Sun M, Pal S, Bellmunt J, Choueiri T, Trinh QD. Comparative effectiveness of selective adjuvant versus systematic neoadjuvant chemotherapy-based strategy for muscle-invasive urothelial carcinoma of the bladder. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/s1569-9056(17)30239-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Irshad K, Jyotsna V, Chosdol K, Agarwal S, Pal S. Mutational status of Yin Yang 1 gene in rare sporadic insulinomas: the Indian scenario with a review. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30568-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Grande E, Choueiri T, Motzer R, Escudier B, Pal S, Kollmannsberger C, Pikiel J, Gurney H, Rha S, Park S, Geertsen P, Gross Goupil M, Suarez C, Arroyo A, Dean M, George D, Powles T. Effect of prior systemic therapy on clinical outcomes with cabozantinib vs everolimus in advanced renal cell carcinoma: Results from the phase 3 METEOR study. Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30707-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Sadeghi S, Groshen S, Parikh R, Mortazavi A, Dorff T, Hoimes C, Pal S, Levine E, Doyle L, Quinn D, Newman E, Lara P. Phase II California Cancer Consortium trial of gemcitabine–eribulin combination (GE) in cisplatin ineligible patients (pts) with metastatic urothelial carcinoma (mUC): tolerability and toxicity report (NCI-9653; 1UM1CA186717-01, NO1-CM-2011-00038). Eur J Cancer 2017. [DOI: 10.1016/s0959-8049(17)30706-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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Dhal A, Mukherjee G, Bhattacharjee M, Naik V, Mukhopadhyay S, Pandit D, Pal S, Mondal D, Karmakar P, Roy T, Asgar M, Bhattacharya S, Bhattacharyya S, Bhattacharya C, Banerjee S, Chakrabarti A. Decay measurements of 43K( β−) 43Ca by HRS and TAS. EPJ WEB OF CONFERENCES 2017. [DOI: 10.1051/epjconf/201714610013] [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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Khan S, Miah RA, Pal S, Khatun S, Fatema N, Roy RR, Naheen CR. Comparison of Molecular Detection Method (Nested Polymerase Chain Reaction) with Blood Culture and Paired Widal test for the Rapid Diagnosis of Typhoid Fever. Mymensingh Med J 2017; 26:117-123. [PMID: 28260765] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
Typhoid fever is a major health problem in developing countries in spite of the use of antibiotics and the development of newer antibacterial drugs. Blood culture & serological tests (specially Widal test) which are invariably done in Bangladesh for typhoid fever diagnosis give unacceptable levels of false negative & false positive results respectively. This cross sectional study was done at Bangabandhu Sheikh Mujib Medical University from March 2013 to February 2014. In this study, a polymerase chain reaction-based technique (which has 100% specificity for Salmonella Typhi) was compared with blood culture and widal test among 80 clinically suspected cases of typhoid fever. PCR showed maximum positivity rate (70%) followed by widal test (43.75%) and blood culture (16.25%). PCR showed positive results for 17(48.6%) of 35 typhoid patients with negative results with blood culture and widal test. The results of the study revealed that PCR is rapid and reliable diagnostic technique for detection of S. Typhi in clinically suspected typhoid fever cases, as compared to most commonly done methods such as conventional blood culture, widal test applied.
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Pal S, Juyal D, Sharma M, Kotian S, Negi V, Sharma N. An outbreak of hepatitis A virus among children in a flood rescue camp: A post-disaster catastrophe. Indian J Med Microbiol 2016; 34:233-6. [PMID: 27080781 DOI: 10.4103/0255-0857.180354] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
We report an outbreak of acute viral hepatitis among children in a flood rescue camp at Rudraprayag district of Uttarakhand State, India. In May 2013, there was a disastrous natural calamity, The Himalayan Tsunami in Himalayan and Sub-Himalayan region of Uttarakhand. More than 5700 people were feared dead, and thousands were sheltered in different rescue camps. A linkage was hypothesised between the infected individuals and the common water sources feared of being contaminated faecally. Aetiological agent of the present outbreak was HAV that is emerging in an outbreak form in India, emphasizing a definite need for formulating mandatory vaccination and proper control strategies. The report exemplifies the basic problems encountered after a natural calamity.
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Pal S, Karagiannis G, Dubrey SW. Cardiac sarcoidosis: a diagnostic puzzle. Br J Hosp Med (Lond) 2016; 77:656-657. [PMID: 27828751 DOI: 10.12968/hmed.2016.77.11.656] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Cella D, Escudier B, Tannir N, Powles T, Donskov F, Peltola K, Schmidinger M, Heng D, Mainwaring P, Hammers H, Lee JL, Rini B, Roth B, Baer J, Mangeshkar M, Scheffold C, Hutson T, Pal S, Motzer R, Choueiri T. Quality of life (QoL) in the phase 3 METEOR trial of cabozantinib vs everolimus for advanced renal cell carcinoma (RCC). Ann Oncol 2016. [DOI: 10.1093/annonc/mdw373.43] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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Thandar L, Chattopadhyay J, Mandal S, Sukul B, Pal S, Gupta A. Study of palatal sutures in adult human skulls of eastern Indian population. J ANAT SOC INDIA 2016. [DOI: 10.1016/j.jasi.2016.08.230] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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Prasad TV, Gupta AK, Garg P, Pal S, Gamanagatti S. Minimally invasive image-guided interventional management of Haemobilia. ACTA ACUST UNITED AC 2016; 36:179-84. [PMID: 27522737 DOI: 10.7869/tg.280] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Hemobilia is a well known cause for upper gastrointestinal (UGI) bleed seen commonly in setting of iatrogenic or accidental trauma and various inflammatory and neoplastic conditions. Patients present with UGI bleed and symptoms of associated biliary obstruction. Management options in intractable cases are surgery and endovascular embolisation. We report a series of eighteen patients presented with severe hemobilia from January 2010 to October 2014, who were managed by endovascular approach in our department. Etiology in these patients were trauma (n = 3), liver biopsy (n = 3), surgery (n = 3), percutaneous procedures (n = 2), inflammatory (n-3), neoplasm (n = 1) and the rest were idiopathic. Angiography revealed pseudoaneurysms of hepatic artery (n = 5), splenic artery (n = 1) and gastroduodenal artery (n = 1) and arterio-biliary fistula (n = 1). Embolising agents used were detachable coils (n = 10) and glue (n = 8). All patients had technical and clinical success with minor non-consequential complications. Our findings show that endovascular embolisation is a simple, safe, accurate and effective treatment in patients with severe hemobilia. It is a viable alternative to major and potentially morbid surgeries.
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Samanta P, Mukherjee AK, Pal S, Kole D, Ghosha AR. Toxic effects of glyphosate-based herbicide, Excel Mera 71 on gill, liver, and kidney of Heteropneustes fossilis under laboratory and field conditions. J Microsc Ultrastruct 2016; 4:147-155. [PMID: 30023221 PMCID: PMC6014198 DOI: 10.1016/j.jmau.2016.01.002] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2015] [Accepted: 01/02/2016] [Indexed: 11/21/2022] Open
Abstract
The effects of glyphosate-based herbicide Excel Mera 71 under field and laboratory conditions were investigated to evaluate the pathological symptoms through light and electron microscopic study in the gill, liver, and kidney of Heteropneustes fossilis (Bloch) for a period of 30 days. Histological alterations like hypertrophy and fusion in secondary lamellae, damage in chloride cells were more prominent in laboratory conditions under light microscopy. Topological changes such as complete loss of microridges, swelling, and irregular arrangement of microridges in the gills were prominent under scanning electron microscopic study under laboratory conditions. Transmission electron microscopy (TEM) study depicted vacuolation and degeneration in chloride cells, dilation in rough endoplasmic reticulum (RER), and mitochondria in gill epithelium. The liver showed enlarged and pyknotic hepatocytes, vacuolation, excess fat deposition, and necrosis under laboratory conditions, while enlarged acentric nuclei, increased sinusoidal space, and less vacuolation in cytoplasm were observed under field conditions. TEM displayed cytoplasmic vacuolation and a reduced number of endoplasmic reticulum and glycogen droplets in the laboratory, but this was less pronounced under field conditions. In the kidneys, loss of hematopoietic tissue, degenerative changes in glomeruli, proximal and distal convoluted tubule, and epithelial cell lining of the renal tubules were comparatively less prominent under field conditions. Under TEM, epithelial cell necrosis, endoplasmic reticulum fragmentation, and mitochondrial degeneration were more prominent under laboratory conditions. The present study evaluated the comparative toxicity under field and laboratory conditions under long-term exposure to glyphosate herbicide and identified pathological responses as indicators in monitoring the herbicidal contamination in aquatic ecosystems.
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Pal S, Egger G, Wright G. Dealing with Obesity: An Australian Perspective. Asia Pac J Public Health 2016; 15 Suppl:S33-6. [PMID: 18924539 DOI: 10.1177/101053950301500s09] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Over half of all Australians are classified as overweight or obese and this is increasing by 1% of the population per year. Obesity is linked with a range of health ailments including type 2 diabetes, heart diseases and some cancers. At a population level it is well accepted that obesity is a result of the increasing use of modern technology, resulting in decreased energy expenditure, in combination with easily available high energy density foods, the “obesogenic environment”. In the modern environment, there are two major areas of management to assist the overweight and obese. Both include a change in lifestyle. Future strategies in weight management should include reduction in energy density and increase in daily physical activity.
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Bandyopadhyay A, Dalui R, Pal S, Bhattacharjee I, Goswami B, Roy AS. Pulmonary function in young females of Kolkata, India - Revisited. Physiol Int 2016. [PMID: 28639867 DOI: 10.1556/036.103.2016.2.6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
Abstract
Rapid economic and industrial growths imposed significant impact on human health including the pulmonary health. Questions were raised regarding the validity of the existing prediction norms of pulmonary function tests (PFTs) in a particular population. The present study was conducted to investigate the applicability of the existing norms for PFTs in young healthy non-smoking female university students of Kolkata, India. Significant difference was noted in vital capacity (VC), forced vital capacity (FVC), and forced expiratory volume in 1 s (FEV1) when the present data were compared with the earlier study in similar population. Correlation statistic revealed significant relationship of age and body height with all the PFT parameters. Body mass had significant correlation with VC, FVC, FEV1 as a percentage of FVC (FEV1%), and peak expiratory flow rate (PEFR). Regression equations have been computed for predicting PFTs from age and body height. There has been a change of PFTs in the studied population for the last couple of decades due to increased environmental pollution in the course of economical and industrial developments. Regression equations computed in this study are not only recommended to predict PFT parameters in the studied population, but they are also considered more reliable owing to their substantially smaller standard error of estimate than those proposed in the previous study.
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Ghosh S, Nandi M, Pal S, Mukhopadhyay D, Chakraborty BC, Khatun M, Bhowmick D, Mondal RK, Das S, Das K, Ghosh R, Banerjee S, Santra A, Chatterjee M, Chowdhury A, Datta S. Natural killer cells contribute to hepatic injury and help in viral persistence during progression of hepatitis B e-antigen-negative chronic hepatitis B virus infection. Clin Microbiol Infect 2016; 22:733.e9-733.e19. [PMID: 27208430 DOI: 10.1016/j.cmi.2016.05.009] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2016] [Revised: 04/05/2016] [Accepted: 05/09/2016] [Indexed: 12/13/2022]
Abstract
Hepatitis B e-antigen negative (e(-)) chronic HBV infection (CHI) encompasses a heterogeneous clinical spectrum ranging from inactive carrier (IC) state to e(-) chronic hepatitis B (CHB), cirrhosis and hepatic decompensation. In the backdrop of dysfunctional virus-specific T cells, natural killer (NK) cells are emerging as innate effectors in CHI. We characterized CD3(-) CD56(+) NK cells in clinically well-defined, treatment-naive e(-) patients in IC, e(-)CHB or decompensated liver cirrhosis (LC) phase to appraise their role in disease progression. The NK cell frequencies increased progressively with disease severity (IC 8.2%, e(-)CHB 13.2% and LC 14.4%). Higher proportion of NK cells from LC/e(-)CHB expressed CD69, NKp46, NKp44, TRAIL and perforin, the last two being prominent features of CD56(bright) and CD56(dim) NK subsets, respectively. The frequencies of CD3(-) CD56(+) NK cells together with TRAIL(+) CD56(bright) and Perforin(+) CD56(dim) NK cells correlated positively with serum alanine transaminase levels in e(-)CHB/LC. K562 cell-stimulated NK cells from e(-)CHB/LC exhibited significantly greater degranulation but diminished interferon-γ production than IC. Further, Perforin(+) NK cell frequency inversely correlated with autologous CD4(+) T-cell count in e(-) patients and ligands of NK receptors were over-expressed in CD4(+) T cells from e(-)CHB/LC relative to IC. Co-culture of sorted CD56(dim) NK cells and CD4(+) T cells from e(-)CHB showed enhanced CD4(+) T-cell apoptosis, which was reduced by perforin inhibitor, concanamycin A, suggesting a possible perforin-dependent NK cell-mediated CD4(+) T-cell depletion. Moreover, greater incidence of perforin-expressing NK cells and decline in CD4(+) T cells were noticed intrahepatically in e(-)CHB than IC. Collectively, NK cells contribute to the progression of e(-)CHI by enhanced TRAIL- and perforin-dependent cytolytic activity and by restraining anti-viral immunity through reduced interferon-γ secretion and perforin-mediated CD4(+) T-cell lysis.
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Uthappa C, Pal S, Panth R, Allam R, Yeldandi V. Pre-exposure Prophylaxis (PrEP): Attitudes, preferences and risk compensation behavior among men who have sex with other men (MSM) in India. Int J Infect Dis 2016. [DOI: 10.1016/j.ijid.2016.02.602] [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] Open
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Metha R, Gahlot GPS, Das P, Jindal G, Mouli VP, Madhusudhan KS, Sharma R, Pal S, Ahuja V, DattaGupta S. Sclerosing mesenteric panniculitis in a young patient : common cause of diagnostic dilemma and treatment refractoriness. Acta Gastroenterol Belg 2016; 79:254-256. [PMID: 27382948] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
BACKGROUND Sclerosing mesenteric panniculitis (SMP) is an idiopathic chronic fibroinflammatory disorder of the intra-abdominal fat. CASE PRESENTATION Herin, we report a case of SMP, involving the omentum, mesentery and peri-colic fat in a 18 year old male, who presented with significant and recurrent abdominal distension for 4.5 years. Computed tomogram revealed ascites, with nodular and irregular omental thickening and foci of calcification. Non-specific radiological and histological features made an accurate diagnosis extremely difficult. After a thorough work up and exclusion of other differentials, diagnosis of a nodular SMP (Weber Christian disease) was given. After showing resistance to chemotherapeutic agents, slow response was noted with cyclophosphamide, followed by rapid symptomatic improvement with mesenterectomy. CONCLUSION SMP is an uncommon benign mesenteric/ omental inflammation, and is a diagnosis of exclusion. As treatment refractoriness is common, management should be individualized and continued for along period. Surgical omentectomy may be helpful.
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Chen CA, Strain A, Mickelsen JL, Larson DA, Jesinger RA, Botelho D, Fromholz S, Obi CN, Crawley A, Lipson JA, Ikeda DM, Cooper C, Pal S. Abstract P4-01-05: Improving the quality of mammographic positioning. Cancer Res 2016. [DOI: 10.1158/1538-7445.sabcs15-p4-01-05] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
Abstract
Purpose:
Optimal breast positioning is a key component to high quality screening mammograms to allow the radiologist to make the best interpretation for the patient and referring physician. In addition, the success of newer imaging techniques also depends on breast positioning. The American College of Radiology (ACR) sets the standard of what images should include by outlining 13 criteria of breast positioning. An initial audit of over 100 mammograms at our institution in 2013 found that only a mean of 33% were achieving the ACR criteria. The goal of our project was to increase the percentage of screening mammograms achieving ACR criteria to 90% by June 2015.
Methods:
Our breast imaging center partnered with a quality improvement (QI) team driving a radiology department-wide program on quality improvement. Team members identified 5 key causes that barred achieving the ACR criteria: disagreement on what meets criteria, not having a standard work for acquiring and reading mammograms, lack of communication between the technologist and radiologist, not having a measurement system to track performance, and lack of coaching on technologist techniques for acquiring images. Developments to address these causes included: teaching modules on what meets ACR criteria, standard work for radiologists to recall mammograms that did not meet ACR criteria, system for the technologist to document why criteria were missed, auditing system to track performance, and feedback sessions between technologists and radiologists. Over 1,700 mammograms were audited from the time period of July 2014 to March 2015.
Results:
By October 2014, the percentage of mammograms achieving all 13 of the ACR criteria was 71%, with 4 criteria that prevented reaching the 90% goal. By March 2015, 10 of the 13 ACR criteria were being sustainably met by the target goal of 90% of mammograms, better in all criteria compared to our 2013 data, and better in all but one criterion compared to published 1993 data. Table 1 demonstrates that we have been able to sustain a composite percentage of 12 of the 13 ACR criteria greater than 90% for the last 2 consecutive months.
Table 1 shows the composite percentage of mammograms achieving 12 of the 13 ACR criteria over time.2013 Baseline8/20149/201410/201411/20141/20152/20153/201564%67%77%82%83%81%95%96%The excluded, most difficult criterion (visualization of the opposite breast cleavage) has been achieved at 32% per 1993 published data; we currently achieve it at 40%. 12/2014 audits were not performed due to holidays and changes in staffing.
Conclusion:
Few institutions have published positioning data, with the most recent QI publication on breast positioning dating to 1993. We have conducted a structured process to improve quality of mammographic positioning, including revision of processes that led to poor positioning outcomes and creation of an environment to sustain our improved outcomes. Three ACR criteria continue to be problematic in reaching the 90% goal, with future investigation into whether it is actually feasible to achieve the most difficult criterion at our goal of 90%. Future work also includes assessing how the recent hire of a mammography coach to spread best practices and real-time feedback is able to further improve results and maintain the infrastructure of ongoing QI.
Citation Format: Chen CA, Strain A, Mickelsen JL, Larson DA, Jesinger RA, Botelho D, Fromholz S, Obi CN, Crawley A, Lipson JA, Ikeda DM, Cooper C, Pal S. Improving the quality of mammographic positioning. [abstract]. In: Proceedings of the Thirty-Eighth Annual CTRC-AACR San Antonio Breast Cancer Symposium: 2015 Dec 8-12; San Antonio, TX. Philadelphia (PA): AACR; Cancer Res 2016;76(4 Suppl):Abstract nr P4-01-05.
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Samanta P, Pal S. Effects of Almix® Herbicide on Oxidative Stress Parameters in Three Freshwater Teleostean Fishes in Natural Condition. ACTA ACUST UNITED AC 2016. [DOI: 10.4172/2167-0501.1000209] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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78
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Samanta P, Pal S. Histopathological Study in Stomach and Intestine of Anabas testudineus (Bloch, 1792) under Almix Exposure. ACTA ACUST UNITED AC 2016. [DOI: 10.4172/2150-3508.1000177] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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79
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Moin Shaikh M, Roy S, Rajbanshi S, Mukherjee A, Pradhan MK, Basu P, Pal S, Nanal V, Shrivastava A, Saha S, Pillay RG. Measurement of fusion excitation function for 7Li+ 64Ni near the barrier. EPJ WEB OF CONFERENCES 2016. [DOI: 10.1051/epjconf/201611708020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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80
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Samanta P, Pal S, Mukherjee AK, Senapati T, Kole D, Ghosh AR. Gastrointestinal Pathology in Freshwater Fish, Oreochromis niloticus (Linnaeus) Under Almix Exposure. ACTA ACUST UNITED AC 2016. [DOI: 10.4172/2161-0525.1000399] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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81
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Palas Samanta P, Pal S. Histopathological and Ultrastructural Alterations in Anabas testudineus Exposed to Glyphosate-Based Herbicide, Excel Mera 71 under Field and Laboratory Conditions. ACTA ACUST UNITED AC 2016. [DOI: 10.4172/2155-9546.1000436] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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82
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Khatun A, Pal S, Mukherjee AK, Samanta P, Mondal S, Kole D, Chandra P, Ghosh AR. Evaluation of metal contamination and phytoremediation potential of aquatic macrophytes of East Kolkata Wetlands, India. ENVIRONMENTAL HEALTH AND TOXICOLOGY 2016; 31:e2016021. [PMID: 27669754 PMCID: PMC5144572 DOI: 10.5620/eht.e2016021] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/22/2016] [Accepted: 09/08/2016] [Indexed: 05/22/2023]
Abstract
OBJECTIVES The present study analyzes metal contamination in sediment of the East Kolkata Wetlands, a Ramsar site, which is receiving a huge amount of domestic and industrial wastewater from surrounding areas. The subsequent uptake and accumulation of metals in different macrophytes are also examined in regard to their phytoremediation potential. METHODS Metals like cadmium (Cd), copper (Cu), manganese (Mn), and lead (Pb) were estimated in sediment, water and different parts of the macrophytes Colocasia esculenta and Scirpus articulatus. RESULTS The concentration of metals in sediment were, from highest to lowest, Mn (205.0±65.5 mg/kg)>Cu (29.9±10.2 mg/kg)>Pb (22.7±10.3 mg/kg)>Cd (3.7±2.2 mg/kg). The phytoaccumulation tendency of these metals showed similar trends in both native aquatic macrophyte species. The rate of accumulation of metals in roots was higher than in shoots. There were strong positive correlations (p<0.001) between soil organic carbon (OC) percentage and Mn (r =0.771), and sediment OC percentage and Pb (r=0.832). Cation exchange capacity (CEC) also showed a positive correlation (p<0.001) with Cu (r=0.721), Mn (r=0.713), and Pb (r=0.788), while correlations between sediment OC percentage and Cu (r=0.628), sediment OC percentage and Cd (r=0.559), and CEC and Cd (r=0.625) were significant at the p<0.05 level. CONCLUSIONS Bioaccumulation factor and translocation factors of these two plants revealed that S. articulatus was comparatively more efficient for phytoremediation, whereas phytostabilization potential was higher in C. esculenta.
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Samanta P, Bandyopadhyay N, Pal S, Mukherjee AK, Ghosh AR. Histopathological and ultramicroscopical changes in gill, liver and kidney of Anabas testudineus (Bloch) after chronic intoxication of almix (metsulfuron methyl 10.1%+chlorimuron ethyl 10.1%) herbicide. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2015; 122:360-367. [PMID: 26318971 DOI: 10.1016/j.ecoenv.2015.08.022] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2015] [Revised: 08/16/2015] [Accepted: 08/18/2015] [Indexed: 06/04/2023]
Abstract
Present study aimed to investigate the effects of almix herbicide on histopathological and ultrastructural changes in freshwater teleostean fish, Anabas testudineus (Bloch) under field and laboratory conditions with a dose of 8 g/acre and 66.7 mg/L respectively for 30 days. In field experiment fish species were reared in special type of cage submerged in pond. Cellular alterations of the concerned organs namely gills, liver and kidney were observed through light, scanning and transmission electron microscopy (SEM and TEM). Gill showed hypertrophy and oedema in secondary gill epithelium, and epithelial lifting under laboratory condition but in field condition hyperplasia was prominent. SEM study revealed necrosis, hyperplasia, excessive secretion of mucus and loss of microridges; while TEM study depicted degenerative changes in mitochondria and chloride cells and severe cytoplsmic vacuolation but the changes were comparatively less under field study. In liver, damage in acinar cells of hepatopancreas, degenerative changes in zymogen granules and detachment of hepatopancreatic acinar cells under laboratory condition were the serious changes, but in field condition fatty deposition is prominent. TEM study depicted dilated, degranulated and vesiculated rough endoplasmic reticulum, dilation and swelling of mitochondria and vacuolation in hepatocytes, but under field condition dilation of mitochondria and appearance of vacuolation were well marked. Kidney showed shrinkage of glomerulus, damaged and hypertrophied proximal convoluted tubule, loss of haematopoietic tissues under light microscopy; while ultrastructural changes like degenerative changes in mitochondria, deformed nucleus, dilation, fragmentation and vesiculation of rough endoplasmic reticulum, severe vacuolation in cytoplasm and necrosis were of very serious concern under laboratory condition, but in field condition epithelial cells showed less damage. Responses depicted that symptoms of lesions were more pronounced under laboratory than field condition and the degree of responses in different tissues were different under these two conditions. Therefore, evaluation of these histopathological lesions in concerned tissues may be established as symptomatic indicators for toxicity study in aquatic ecosystem.
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Pal S, Nelson R, Vogelzang N. 2613 Conditional survival in de novo metastatic urothelial carcinoma: Assessment of 3,410 patients in the SEER database. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31431-9] [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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85
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Ali S, Choueiri T, Wang K, Khaira D, Johnson A, Squillace R, Elvin J, Chmielecki J, Yelensky R, Lipson D, Miller V, Ross J, Stein M, Pal S, Stephens P. 2651 Comprehensive genomic profiling (CGP) identifies unique and abundant clinically relevant genomic alterations in rare histologies of renal cell carcinoma. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31468-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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86
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Ramos J, Casey M, Bamias A, De Giorgi U, Bellmunt J, Harshman L, Ladoire S, Wong Y, Alva A, Necchi A, Recine F, Vaishampayan U, Niegisch G, Pal S, Crabb S, Golshayan A, Srinivas S, Rosenberg J, Galsky M, Yu E. 2607 Predicting venous thromboembolism (VTE) in metastatic urothelial tract tumors (UTT). Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31425-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Ali S, Sanford E, Elvin J, Bailer M, He J, Wang K, Chmielecki J, Yelensky R, Morosini D, Lipson D, Frampton G, Chalmers Z, Stephens P, Ross J, Miller V, Pal S. 2641 Comprehensive genomic profiling of advanced penile carcinoma suggests a high rate of clinically relevant genomic alterations. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31458-7] [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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Pal S, Vuong W, Zhang W, Deng J, Liu X, Ruel N, Pinnamaneni M, Twardowski P, Lau C, Yu H, Figlin R, Agarwal N, Jones J. 2572 Clinical and translational assessment of VEGFR1 as a mediator of the pre-metastatic niche: Neoadjuvant axitinib in high-risk localized prostate cancer. Eur J Cancer 2015. [DOI: 10.1016/s0959-8049(16)31391-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Ghosh A, Dutta B, Pal S. A pilot study on natural selection site of implantation in uterine pregnancy by ultrasonography in first trimester. J ANAT SOC INDIA 2015. [DOI: 10.1016/j.jasi.2015.07.322] [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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90
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Maji U, Pal S, Mitra M. Study of atrial activities for abnormality detection by phase rectified signal averaging technique. J Med Eng Technol 2015; 39:291-302. [PMID: 26084877 DOI: 10.3109/03091902.2015.1052108] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Non-invasive detection of Atrial Fibrillation (AF) and Atrial Flutter (AFL) from ECG at the time of their onset can prevent forthcoming dangers for patients. In most of the previous detection algorithms, one of the steps includes filtering of the signal to remove noise and artefacts present in the signal. In this paper, a method of AF and AFL detection is proposed from ECG without the conventional filtering stage. Here Phase Rectified Signal Average (PRSA) technique is used with a novel optimized windowing method to achieve an averaged signal without quasi-periodicities. Both time domain and statistical features are extracted from a novel SQ concatenated section of the signal for non-linear Support Vector Machine (SVM) based classification. The performance of the proposed algorithm is tested with the MIT-BIH Arrhythmia database and good performance parameters are obtained, as indicated in the result section.
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Chaudhuri KR, Rizos A, Trenkwalder C, Rascol O, Pal S, Martino D, Carroll C, Paviour D, Falup-Pecurariu C, Kessel B, Silverdale M, Todorova A, Sauerbier A, Odin P, Antonini A, Martinez-Martin P. King's Parkinson's disease pain scale, the first scale for pain in PD: An international validation. Mov Disord 2015; 30:1623-31. [DOI: 10.1002/mds.26270] [Citation(s) in RCA: 141] [Impact Index Per Article: 15.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2015] [Revised: 04/02/2015] [Accepted: 04/13/2015] [Indexed: 11/06/2022] Open
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92
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Chatterji S, Pal D, Ghosh MK, Naskar A, Pal S, Mullick S, Bhattacharya I. A case of spontaneous pneumothorax, pneumomediastinum & subcutaneous emphysema in Pneumocystis jirovecii pneumonia complicating HIV. SRI LANKAN JOURNAL OF INFECTIOUS DISEASES 2015; 5:22. [DOI: 10.4038/sljid.v5i1.7569] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/04/2023] Open
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Kokushi E, Uno S, Pal S, Koyama J. Effects of chlorpyrifos on the metabolome of the freshwater carp, Cyprinus carpio. ENVIRONMENTAL TOXICOLOGY 2015; 30:253-260. [PMID: 23997021 DOI: 10.1002/tox.21903] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/07/2013] [Revised: 08/05/2013] [Accepted: 08/05/2013] [Indexed: 06/02/2023]
Abstract
This study investigated the effects of waterborne chlorpyrifos with concentrations of 1 and 100 µg/L for L and H-groups, respectively, on metabolome profiles of carp plasma using (1)H-NMR. Principal component analysis suggests that chlorpyrifos exposure firstly affected in L and H-groups on day 2 or 4, and followed a second effect in both exposure groups on day 14. Levels of metabolites related to the energy production in the body, such as glucose, glycerol, valine, leucine, isoleucine, lactate, alanine, 3-D-hydroxybutyrates and acetoacetate, significantly changed by exposures of chlorpyrifos. Those results suggest that energy production was severely affected in carp. The exposure could also be highly elevated ammonia levels especially in H-group due to severe convulsion in muscle caused by the inhibition of acetylcholinesterase activity.
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Satpati SK, Biswas S, Pal S, Roy SB, Tewari PK. Separation and Recovery of Uranium from Wastewater Using Sorbent Functionalized with Hydroxamic Acid. SEP SCI TECHNOL 2015. [DOI: 10.1080/01496395.2014.973519] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Sarkar A, Sanyal D, Nath P, Chakrabarti M, Pal S, Chattopadhyay S, Jana D, Asokan K. Defect driven ferromagnetism in SnO2: a combined study using density functional theory and positron annihilation spectroscopy. RSC Adv 2015. [DOI: 10.1039/c4ra11658e] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Room temperature ferromagnetic ordering has been observed in polycrystalline SnO2. Defect characterization by positron annihilation technique and ab initio calculation indicates that tin vacancies are mainly responsible for inducing magnetic moment in oxygen irradiate SnO2.
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Shaikh MM, Roy S, Rajbanshi S, Pradhan MK, Mukherjee A, Basu P, Pal S, Nanal V, Pillay RG, Shrivastav A. Fusion excitation function measurement for 6Li+ 64Ni at near-barrier energies. EPJ WEB OF CONFERENCES 2015. [DOI: 10.1051/epjconf/20158600044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
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97
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Pal S, Kundu TK. Design of Methane Hydrate Inhibitor Molecule Using Density Functional Theory. J CLUST SCI 2014. [DOI: 10.1007/s10876-014-0826-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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98
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Tan KK, Pal S, Lee PJ, Rodwell L, Solomon MJ. Pelvic exenteration for recurrent squamous cell carcinoma of the pelvic organs arising from the cloaca--a single institution's experience over 16 years. Colorectal Dis 2014; 15:1227-31. [PMID: 23714581 DOI: 10.1111/codi.12306] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/19/2012] [Accepted: 02/03/2013] [Indexed: 02/08/2023]
Abstract
AIM Minimal data are available on the role of pelvic exenteration in patients with recurrent squamous cell carcinoma (SCC) of the pelvic organs. This study aimed to highlight our experience of pelvic exenteration in patients with recurrent and re-recurrent SCC of the pelvic organs. METHOD A retrospective review of all patients who underwent pelvic exenteration for recurrent SCC of the pelvic organs arising from the embryological cloaca from 1994 to 2010 was performed. RESULTS Twenty-four patients (median age 59, range, 27-79 years) underwent pelvic exenteration for recurrent SCC of the anus (18), cervix and upper vagina (2), lower vagina (1) and the vulva (3). Nine patients with anal SCC had undergone abdominoperineal excision prior to pelvic exenteration. Ten (41.7%) patients underwent a complete pelvic exenteration procedure, while sacrectomy was performed in 13 (54.2%) patients. There was no 30-day inpatient mortality. An R0 resection was achieved in 15 (62.5%) patients. Three (12.5%) had R1 resections while 6 (25%) had R2 resections. In the 15 patients with an R0 resection, 7 (46.7%) developed metastatic disease at a median of 18 (range 10-131) months. After a median follow-up of 26 (range 4-169) months, 1- and 2-year overall survival rates were 64% [95% confidence interval (CI), 44-84%] and 57% (95% CI 35-79%), respectively. CONCLUSION Pelvic exenteration for recurrent SCC of the cloaca is safe and feasible even after previous salvage surgery. An R0 resection can be achieved in 62.5% of the patients with reasonable early survival though less than published recurrent rectal cancer studies.
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Pal S, Lee TR, Phelps S, De Wekker SFJ. Impact of atmospheric boundary layer depth variability and wind reversal on the diurnal variability of aerosol concentration at a valley site. THE SCIENCE OF THE TOTAL ENVIRONMENT 2014; 496:424-434. [PMID: 25105753 DOI: 10.1016/j.scitotenv.2014.07.067] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2014] [Revised: 06/23/2014] [Accepted: 07/20/2014] [Indexed: 06/03/2023]
Abstract
The development of the atmospheric boundary layer (ABL) plays a key role in affecting the variability of atmospheric constituents such as aerosols, greenhouse gases, water vapor, and ozone. In general, the concentration of any tracers within the ABL varies due to the changes in the mixing volume (i.e. ABL depth). In this study, we investigate the impact on the near-surface aerosol concentration in a valley site of 1) the boundary layer dilution due to vertical mixing and 2) changes in the wind patterns. We use a data set obtained during a 10-day field campaign in which a number of remote sensing and in-situ instruments were deployed, including a ground-based aerosol lidar system for monitoring of the ABL top height (zi), a particle counter to determine the number concentration of aerosol particles at eight different size ranges, and tower-based standard meteorological instruments. Results show a clearly visible decreasing trend of the mean daytime zi from 2900 m AGL (above ground level) to 2200 m AGL during a three-day period which resulted in increased near-surface pollutant concentrations. An inverse relationship exists between the zi and the fine fraction (0.3-0.7 μm) accumulation mode particles (AMP) on some days due to the dilution effect in a well-mixed ABL. These days are characterized by the absence of daytime upvalley winds and the presence of northwesterly synoptic-driven winds. In contrast, on the days with an onset of an upvalley wind circulation after the morning transition, the wind-driven local transport mechanism outweighs the ABL-dilution effect in determining the variability of AMP concentration. The interplay between the ABL depth evolution and the onset of the upvalley wind during the morning transition period significantly governs the air quality in a valley and could be an important component in the studies of mountain meteorology and air quality.
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Samanta P, Pal S, Mukherjee AK, Senapati T, Ghosh AR. Alterations in Digestive Enzymes of Three Freshwater Teleostean Fishes by Almix Herbicide: A Comparative Study. ACTA ACUST UNITED AC 2014. [DOI: 10.1007/s12595-014-0122-7] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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