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Intraparotid facial nerve schwannoma: A case report

World Journal of Clinical Cases 2015年第3期3卷 322-326页

作者： Abhishek Jaiswal Asit Ranjan Mridha devajit nath Ashu Seith Bhalla Alok Thakkar Department of Radiodiagnosis All India Institute Of Medical Sciences AIIMS Department of Pathology AIIMS Department of Otolaryngology and Rhinology AIIMS

Facial nerve schwannoma occurring within the parotid gland is a rare tumour. We report a case of schwannoma within the parotid gland in a young female patient, who underwent ultrasound and magnetic resonanceimaging(MRI) and subsequent surgical excision of the lesion. The lesion showed hyperintensity on T2-weighted and diffusion-weighted MRI. There was no adjacent lymphadenopathy. Although hyperintensity on diffusionweighted MRI could suggest malignant tumours, the characteristic "string sign" provided the clue for the diagnosis of schwannoma.

关键词： Parotid Facial nerve Schwannoma String sign Imaging

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Immunofluorescence on paraffin embedded renal biopsies:Experience of a tertiary care center with review of literature

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World Journal of Nephrology 2016年第5期5卷 461-470页

作者： Geetika Singh Lavleen Singh Ranajoy Ghosh devajit nath Amit Kumar Dinda Department of Pathology All India Institute of Medical SciencesNew Delhi 110029India

AIMTo describe the technique of immunofluorescence on paraffin embedded tissue sections and discuss the po-tential pitfalls with an in depth review of *** is integral to diagnostic renal pa-thology. Immunofluorescence on paraffin embedded renal biopsies （IF-P） after enzyme treatment has been described in literature, however has not found widespread use in renal pathology laboratories. In our laboratory proteinase K digestion of paraffn embedded renal biopsy material was standardized and applied prospectively in cases where immunofuorescence on fresh frozen tissue was non contributory or not possible. Diagnostic utility was assessed and in a cohort of cases comparison of intensity of staining with routine immunofuorescence was *** the 5-year study period, of the 3141 renal biopsies received IF-P was performed on 246 cases （7.7%） and was interpretable with optimal digestion in 214 cases （6.8%）. It was of diagnostic utility in the majority of cases, which predominantly included glomerular disease. Non-diagnostic IF-P was found in membranous nephropathy （2 of 11 cases）, membranoproliferative glomerulonephritis （2 of 32 cases）, lupus nephritis （1 of 25 cases）, post infectious glomerulonephritis （1 of 11 cases） and chronic glomerulonephritis （3 of 8 cases）. Comparing cases with both routine IF and IF-P, 35 of 37 showed either equal intensity or a minor difference in intensity of staining（1＋） for the diagnostic immunoglobulin/complement. Technically assessment of immunofluorescence on the paraffin embedded tissue was found to be easier with clearly observed morphology, however a false positive staining pattern was observed in under-digested tissue. CONCLUSIONAs a “salvage” technique, immunofuorescence on paraffn embedded renal biopsies is of great diagnostic utility, however not without pitfalls.

关键词： Immunofluorescence on paraffin section Renal biopsy Salvage technique Enzymatic digestion Proteinase KSnea

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Photosynthetic activity and antioxidative response of seagrass Thalassia hemprichii to trace metal stress

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Acta Oceanologica Sinica 2012年第3期31卷 98-108页

作者： LI Lei HUANG Xiaoping devajit Borthakur NI Hui State Key Laboratory of Tropical Oceanography South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Graduate University of Chinese Academy of Sciences Beijing 100049China Tropical Marine Biological Research Station in Hainan Chinese Academy of SciencesSanya 572200China The Science and Technology Library of Guangdong Province Guangzhou 510070China Tocklai Experimental Station Tea Research AssociationJorhatAssam 785008India Foreign Language Department Heze UniversityHeze 274000China

This study concerned the accumulation of trace metals in tissues of seagrass ( Thalassia hemprichii) exposed to various concentrations of Zn2+,Cd2+,Pb2+ and Cu2+ for 10 d,and the effect of excessive metals on quantum yield (△F/F′m),photosynthetic pigments and antioxidative enzymes like superoxide dismutase (SOD),guaiacol peroxidase (POD) were also *** was the most highly accumulated ***,high metals levels led to a remarkable breakdown of photosynthetic ***,△F/F′m,chlorophyll and carotenoid were significantly low during prolonged Cu ***,△F/F′m was more severely depressed by Cu and Zn than Pb and ***,*** had positive response by increasing the activity of SOD and *** results indicate that *** is the most sensitive to Cu,and the antioxidative protection mechanisms of *** are more efficiently activated to avoid damage of Zn,Cd and Pb stress. Finally,due to the high Cd-accumulation and strong Cd-tolerance capacity,*** can be used for phytoremediation in Cd-contaminated areas.

关键词： Thalassia hemprichii metal stress photosynthetic pigments quantum yield antioxidant enzymes

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印度茶叶经济、文化和节庆(英文)

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茶叶 2006年第2期32卷 106-111页

作者： Borthakur devajit 梁月荣浙江大学茶叶研究所杭州310029

由于印度的茶叶产量达到世界总产量的27%,因此其在茶叶生产、消费和出口都处于世界领先地位。茶产业也许是近150年以来印度唯一能保持领导地位的产业。尽管人均消费低,但印度茶叶国内消费几乎占总产量的3/4,而且以年增长2.7%的速度在发... 详细信息

由于印度的茶叶产量达到世界总产量的27%,因此其在茶叶生产、消费和出口都处于世界领先地位。茶产业也许是近150年以来印度唯一能保持领导地位的产业。尽管人均消费低,但印度茶叶国内消费几乎占总产量的3/4,而且以年增长2.7%的速度在发展。茶叶仍然是主要的外汇收入来源,每年约184.7亿印度卢比。然而,近几年来这个15亿美元的产业却处于衰退之中。本文讨论了造成其衰退的原因及挽救措施。印度对茶叶的研发活动主要集中在4个不同组织,其中托克莱试验站已经培育出许多改良茶树品种:30个TV无性系,150个在试无性系和14个双无性系。本文同时介绍了印度的茶文化和产茶社团的的节庆活动。

关键词：阿萨姆茶大吉岭茶茶叶委员会茶叶拍卖体系香料茶 Jhumur茶园舞

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茶饮料中微量色素物质的HPLC分析方法研究

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茶叶科学 2007年第4期27卷 343-348页

作者：潘顺顺陆建良杨晓丽郑新强杜颖颖 devajit B 梁月荣浙江大学茶叶研究所浙江杭州310029

以含乙腈的流动相作为洗脱剂,对茶饮料中微量色素物质的HPLC分析方法进行了研究。结果显示,在色谱柱长为15cm、柱温为35℃、总流量为1ml、检测波长450nm条件下,最佳的洗脱参数为:①以3/0.5/96.5(v/v/v)的乙腈、乙酸和水的混合液为流动... 详细信息

以含乙腈的流动相作为洗脱剂,对茶饮料中微量色素物质的HPLC分析方法进行了研究。结果显示,在色谱柱长为15cm、柱温为35℃、总流量为1ml、检测波长450nm条件下,最佳的洗脱参数为:①以3/0.5/96.5(v/v/v)的乙腈、乙酸和水的混合液为流动相A,以75/15/10(v/v/v)的乙腈、甲醇和氯仿混合液为B相;②梯度洗脱,即前20min内B相由80%上升到100%,并保持15min。在该条件下新黄质、紫黄质、叶黄素、叶绿素b、叶绿素a、脱镁叶绿素b、β-胡萝卜素和脱镁叶绿素a等色素物质均可获得基线分离。同时研究还显示,该方法重复性较好,检测限低,可满足绿茶饮料中微量色素物质的分析。

关键词：茶树茶饮料 HPLC 色素物

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