يعرض 1 - 10 نتائج من 38 نتيجة بحث عن '"D. Chatterjee"', وقت الاستعلام: 1.52s تنقيح النتائج
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    المصدر: Annals of the Royal College of Surgeons of England.

    مصطلحات موضوعية: Surgery, General Medicine

    الوصف: Oesophageal carcinosarcoma (OCS) is a rare oesophageal cancer, expressing both carcinomatous and sarcomatous elements. Although believed to have a better prognosis, no standard guidelines exist for its diagnosis and management. We report a case of a 60-year male presenting with progressive dysphagia and weight loss. Endoscopy and contrast-enhanced computed tomography of the chest revealed a large polypoidal intraluminal growth at the mid-oesophagus. Endoscopic biopsy revealed a sarcoma of the oesophagus. The patient underwent McKeown minimally invasive oesophagectomy. Final histopathology was suggestive of OCS. Postoperatively, the patient received adjuvant chemoradiation. At 20-month follow-up, he was asymptomatic with no radiological evidence of recurrence.

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    المصدر: J Am Soc Nephrol

    الوصف: Background: Patients with preexisting chronic kidney (CKD) and liver disease and liver are more at risk from COVID-19, but reasons for variability in disease susceptibility and severity is still poorly understood. Given the high infection rate in New York City, we conducted a COVID-19 assessment survey in a cohort of CKD and liver patients previously consented into genetic studies. Methods: Between March and August 2020, we completed 1601 unique IRBapproved COVID-19 assessment surveys. The survey covered COVID-19 symptoms, exposure risk, PCR and/or serology testing, and hospitalization. 298 of those patients were exome sequenced. We analyzed differences in COVID-19 PCR, serology and hospitalization rate and genetic analysis to identify possibly associated variants in the immune/coagulation pathways, suggested to be involved in COVID-19 susceptibility/ severity by recent publicationw. We also analyzed variants based on the American College of Medical Genetics and Genomics (ACMG) guidelines for clinical annotation of genetic results Results: Hispanic/Latino patients were more likely to have a positive COVID-19 PCR (Fisher Exact Test p: 0.01, 29.5% vs 16.7%), serology (Fisher Exact Test p: 0.02, 22.9% vs 9.7%) and hospitalization (Fisher Exact Test p: 0.01, 29.5% vs 16.7%). Patients with glomerulopathy had lower positive COVID-19 PCR tests (Fisher Exact Test p: 0.01, 14.7% vs 48.7%). Analysis of exome data identified an excess number of rare variants in genes in the immune dysregulation pathways among patients with positive COVID-19 PCR test, (fisher p: 0.01, 75% vs 18%). These results were mostly driven by rare variants in CASP10, which were more common among the Hispanic/Latino population. Conclusions: We confirm that Hispanic/Latino ethnicity is a significant risk factor for positive COVID-19 PCR, serology and hospitalization. The analysis of the genetic mechanisms in immune/coagulation pathways identified an excess of rare variants in the CASP10 gene, results that overlap with Hispanic/Latino ethnicity.

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    المصدر: Poultry Science. 97:2971-2978

    الوصف: The wooden breast (WB) myopathy influences muscle composition and texture characteristics in broiler breast meat. It is unknown if marination reduces the negative influence of WB on meat sensory quality or if WB effects are uniform throughout the Pectoralis major. The objective of this study was to determine the effects of marination on the sensory attributes and instrumental shear force measurements of the ventral (skin-side) and dorsal (bone-side) portions of normal and severe WB meat. Sixty butterfly fillets (30 normal and 30 severe WB) were selected from the deboning line of a commercial processing plant. Individual fillets were portioned into ventral and dorsal halves. Portions from one side of each butterfly were used as non-marinated controls, and portions from the other side were vacuum-tumble marinated (16 rpm, -0.6 atm, 4°C, 20 min) with 20% (wt/wt) marinade to meat ratio. Marinade was formulated to target a concentration of 0.75% (w/v) salt and 0.45% (w/v) sodium tripolyphosphate in the final product. Descriptive sensory analysis (9 trained panelists) was conducted to evaluate visual, texture, and flavor attributes (0-15 point scale) of breast portions along with Warner-Bratzler shear force. Significant interaction effects between WB and marination were not observed for the sensory attributes. Greater springiness, cohesiveness, hardness, fibrousness, and chewiness scores were observed in WB samples (P0.001). Marination decreased cohesiveness, hardness, and chewiness (P0.05) and increased juiciness (P = 0.002). The effects of WB on sensory texture attributes were more apparent in the ventral portions of the breast fillets. Flavor attributes (salty and brothy) increased (P0.001) with marination. In non-marinated samples, shear force was similar between normal and WB samples. In marinated samples, however, shear force was greater (P0.001) in WB samples. Data suggest that the WB effect on meat sensory quality is not uniform throughout the Pectoralis major and that WB-related differences in cooked meat sensory texture attributes are lessened but not eliminated by vacuum-tumbling marination.

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    المصدر: Brain Circulation
    Brain Circulation, Vol 6, Iss 2, Pp 107-115 (2020)

    الوصف: PURPOSE: The aim of the study is to assess the correlation between regional leptomeningeal collateral (rLMC) Scores calculated on computed tomography (CT) angiography following acute anterior circulation ischemic stroke, with 3-month clinical outcome measured as modified Rankin Scale (mRS) and Barthel Index (BI). MATERIALS AND METHODS: A total of thirty patients were studied as per the exclusion and inclusion criteria and after informed consent. Multi-phase CT angiography was carried out within 24 h of stroke onset, and collateral scoring was done using rLMC score along with Alberta stroke programme early CT (ASPECT) scoring. At 3 months, patients were followed up to evaluate the clinical outcome using mRS and BI. Statistical analysis was performed to find out the correlation between rLMC score, ASPECT score, and clinical outcome and for association with demographic parameters and stroke risk factors. RESULTS: A strong correlation was noted between ASPECT and rLMC scores (P < 0.001) and between rLMC scores and clinical outcome at 3 months (mRS and BI). Correlation with mRS (P < 0.001) was nearly as strong as that of BI on follow-up (P < 0.001). The ASPECT score also was a predictor of clinical outcome and showed correlation with mRS (P < 0.001) and BI (P < 0.001). No significant association was found between various stroke risk factors and demographic parameters with rLMC scores. The rLMC scoring system showed substantial inter-rater reliability with Kappa = 0.7. CONCLUSIONS: rLMC score in CT angiography correlates with ASPECT Score and clinical outcome at 3 months. Hence, this scoring system can be used for collateral quantification as may be of use in predicting short-term clinical outcomes.

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    المصدر: Poultry Science. 95:2449-2454

    الوصف: The objective was to characterize texture properties of raw and cooked broiler fillets (Pectoralis major) with the wooden breast condition (WBC) using the instrumental texture techniques of Meullenet-Owens Razor Shear (MORS) and Texture Profile Analysis (TPA). Deboned (3 h postmortem) broiler fillets were collected from a commercial plant and categorized as normal, moderate, or severe WBC based on the incidence and severity of diffuse hardened areas throughout fillets and the degree of palpable hardness. The fillets were then either stored at 4°C overnight or in a -20°C freezer. The MORS and TPA of the raw samples were determined at 24 h postmortem for fresh samples and after thawing overnight for frozen samples. The same measurements were also taken after the samples were cooked to 78°C. Regardless of freshness (fresh vs. frozen-thawed), cooking (raw vs. cooked), and degree of WBC, both MORS force and energy of the WBC samples were higher than that of the normal samples (P 0.05). For TPA adhesiveness and resilience, there were no differences between normal and WBC samples (P 0.05). However, average TPA hardness and chewiness measurements of the fillets with WBC were higher than the normal fillets (P 0.05). Regardless of texture measurement, there were no interactions between freshness and the wooden condition or no differences between moderate and severe WBC fillets (P 0.05). These results demonstrate that there are significant differences in instrumental texture properties between normal fillets and those exhibiting the WBC. The WBC fillets required more force to cut through, harder, and chewier than normal breast muscles. These results suggest that cooked WBC meat would likely be tougher than cooked normal meat.

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    الوصف: The woody breast (WB) condition is an emerging myopathy found in broiler breast Pectoralis major. It greatly influences the texture characteristics and quality of raw meat. The objective of this study was to evaluate the effects of WB on the sensory quality of cooked intact and ground broiler breast meat. Broiler breast fillets (deboned 3 h postmortem) were collected from a commercial deboning line and classified into normal and severe WB categories based on the prevalence and severity of diffuse hardened areas and overall fillet rigidity. Individual fillets (24 per treatment) were either ground to make patties or left intact prior to being stored for 7 days at -20P > 0.05) in the sensory texture attributes of juiciness, cohesiveness of mass, bolus size, fibrous, or rate of breakdown were observed, classified normal and WB samples. However, the springiness and hardness values of intact WB fillets were greater than those of normal fillets (P < 0.05). Springiness and chewiness values of WB patties were lower (P < 0.05) than those of normal patties. No differences (P > 0.05) in shear force were observed between normal and WB samples for either intact fillets or patties. Results demonstrate that the WB condition negatively influences the sensory texture quality of intact chicken breast fillets. However, the undesirable effects of the WB condition on cooked meat texture can be minimized in a ground product.

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    المؤلفون: D. Chatterjee, Niranjan Das, N. Hazari

    المصدر: Procedia Engineering. 55:51-57

    الوصف: The effect of Ru addition on the microstructure, creep and rupture properties of the directionally solidified (DS) Ni based superalloy, DMD4 has been evaluated. The microstructural characterization of the alloys has been carried out using scanning electron microscopy and electron microprobe analysis. The morphology of γ′ precipitates was more cuboidal in the Ru-bearing superalloy as compared to the Ru-free superalloy. Further, Ru addition was found to increase the volume fraction of γ′ precipitates from 51% to 54% and decrease the width of the γ channels from 90 nm to 76 nm. Creep and rupture properties, evaluated at stress/temperature combinations ranging between 90-500 MPa/850-1100 °C, showed significant improvement in rupture life of the Ru containing superalloy over that of the Ru free alloy, at all combinations of stress and temperature. Such enhancement in the rupture life can be attributed to the formation of a well elongated rafted structure and the inherent higher volume fraction γ′ precipitates in the Ru-containing alloy. Larson-Miller plots derived from the creep tests suggest that addition of Ru enhanced the temperature capability of the alloy by about 11 °C for 100 hrs life at 140 MPa.

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    المصدر: Acta Neurologica Scandinavica. 99:16-25

    الوصف: We report the first large-scale screening of mitochondrial (mt) DNA in 77 Caucasian patients with relapsing-remitting or secondary progressive form of multiple sclerosis (MS) and in 84 Caucasian controls by using the method of restriction site polymorphism and haplotype analysis. No pathogenic mtDNA mutation was found in association with MS. However, mtDNA haplotypes K * and J * defined by the simultaneous presence of Ddel restriction sites at nucleotides 10,394 and 14,798 of the mtDNA in haplogroups K and J showed association with MS at a P-value of 0.001. A relative increase of MS patients compared to controls either with the J * or with the K * haplotype (+10,394DdeI/+ 14,798Ddel in haplogroup J or K) also was detected (each with a P