Characterization of kidney lesions in Indian adults: towards a renal biopsy registry

BACKGROUND: In the absence of a renal biopsy registry, there is a paucity of data on the renal disease pattern seen in India. This study reviews the changing pattern of renal disease seen at a single center over the last 30 yrs. METHODS: Histopathological data of 5415 adequate native kidney biopsies performed on consecutive adult Indian patients presenting to our hospital from 1986-2002 were analyzed. This pathological demography classified according to the modified World Health Organization (WHO) classification was compared to the earlier published cohort collected from 1971-1985 (n=2827) to ascertain the changing trends. RESULTS: The indications for renal biopsy were comparable between the cohorts and included nephrotic syndrome (65%), nephritic syndrome (13%) and chronic renal failure (10.2%). Primary glomerular disease accounted for 71% of all biopsies. Non-immunoglobulin A (IgA) mesangio proliferative glomerulonephritis as a group was the predominant pathology (20.2%), followed by idiopathic focal segmental glomerulosclerosis (FSGS) (17%), minimal change disease (MCD) (11.6%), membranous glomerulopathy (MN) (9.8%), IgA nephropathy (8.6%) and membranoproliferative glomerulonephritis (MPGN) (3.7%). Of the patients with secondary kidney diseases, lupus nephritis (6.5%), diabetic nephropathy (2.5%), interstitial nephropathy (2.5%) and benign nephrosclerosis (2.2%) were notable. During the 31 yrs of the study period, there was a steady increase in FSGS prevalence (p<0.001), MN (p<0.0001), and post infectious glomerulonephritis (PIGN) (p<0.001). A reduction in the frequency of MPGN (p<0.001) and MCD (p<0.001) was observed. CONCLUSIONS: This is the largest series of renal biopsy data from India; and therefore, could reflect the demographic picture of renal diseases in this country. It discusses evolving patterns over 30 yrs and highlights differences with the developed world. This report represents the basis for the future of a renal biopsy registry in India.     

流式细胞术检测初治急性白血病患者VEGFR1和R2的表达及其意义

目的:了解初治急性白血病(AL)患者骨髓不同类型细胞表达VEGFR1和VEGFR2的情况,探讨流式细胞术检测白血病细胞VEGFR表达的意义。方法:采用流式细胞术CD45/SSC设门方法检测27例初治AL患者骨髓淋巴细胞、粒细胞、白血病细胞和10例正常对照者骨髓淋巴细胞、粒细胞VEGFR1、VEGFR2、VEGFR1/VEGFR2的表达。结果:VEGFR1在初治AL组与正常对照组淋巴细胞之间或粒细胞之间表达差异无统计学意义(P>0.05);在初治AL组,VEGFR1在淋巴细胞的表达高于在粒细胞或在白血病细胞的表达(P<0.05),但在粒细胞与白血病细胞之间表达差异无统计学意义(P>0.05);在正常对照组,VEGFR1在淋巴细胞的表达高于在粒细胞的表达(P<0.05)。VEGFR2、VEGFR1/VEGFR2在初治AL组和正常对照组淋巴细胞之间、粒细胞之间、淋巴细胞与粒细胞之间、淋巴细胞与白血病细胞之间以及粒细胞与白血病细胞之间表达均差异无统计学意义(均P>0.05)。VEGFR1、VEGFR2、VEGFR1/VEGFR2在初治急性淋巴细胞白血病(ALL)组与初治急性髓细胞白血病(AML)组白血病细胞之间表达差...     

Evaluation of Factors Affecting Margin Positivity and Persistent Disease After Leep for Cervical Intraepithelial Neoplasia

BackgroundCervical intraepithelial neoplasia (CIN) is the precursor lesion of cervical cancer. Untreated high-grade CIN significantly increases the risk of developing invasive cancer. Conization is the main treatment. Loop electrosurgical excision procedure (LEEP) is the most common conization method used. The study aims to assess the risk factors associated with positive margin and persistent disease after LEEP for CIN.Materials and MethodsA total of 156 patients who underwent LEEP during 2011–2018 included in the study. We analyzed the socio-demographic characteristics, colposcopy details, dimensions of LEEP specimen (thickness, length, volume) and histopathology (margin positivity, grade). Persistent disease was histologically confirmed by repeat LEEP and hysterectomy.ResultsMargin positivity was noted in 33.3% (52) patients. Residual disease was noted in 26.2% (41) of the patients who had undergone a repeat LEEP or hysterectomy. There was a significant association between margin positivity and Swede score of 5 or more, a high-grade lesion on IFCPC score, inner margin involvement, LEEP done in a single pass. The cutoff for margin positivity was length of 0.513 cm and thickness of 0.35 cm. A significant association between residual disease and margin positivity, postmenopausal status, Swede score of 5 or more, high-grade lesion on IFCPC score, inner margin involvement was observed. The chance of residual disease was less if the cone specimen had minimum length of 0.775 cm and minimum thickness of 0.65 cm.ConclusionWhen in doubt regarding the margins, it is always better to perform multiple passes for lesions with a high Swede score with an initial smear of HSIL. Postmenopausal women with inner margin positivity have a high chance of residual disease and should be either kept on close follow-up or consider a repeat procedure.     

Chromophobe renal cell carcinoma with heterologous (liposarcomatous) differentiation: a case report

A 44-year-old woman presented with right flank mass of 6 months duration. A right side renal tumor was diagnosed, and a radical nephrectomy was performed. Histopathological examination showed chromophobe renal cell carcinoma (CRCC) with sarcomatoid transformation. The sarcomatous component contained large pleomorphic lipoblasts. The CRCC was positive for Hale's colloidal iron stain, whereas the sarcomatous component was negative. Based on histopathological and immunohistochemical findings, a diagnosis of sarcomatoid CRCC with heterologous liposarcomatous differentiation was made. To the authors' knowledge, this is the second reported case of a sarcomatoid CRCC where the sarcomatous component displayed features of liposarcoma. The case has been reported for its rarity.     

Nanoparticle-based immunotherapy: state of the art and future perspectives

ABSTRACT

Introduction

For several years now, medicine has been benefiting from the contribution of nanoparticles (NPs) technology for both diagnosis and therapy. They can be used as adjuvants, being capable per se of immune-modulating activity, or as carriers for molecules to be transported to a specific target, eventually loaded with specific ligands favoring specific uptake.     

氟伐他汀对高糖诱导人足细胞血管内皮生长因子表达的影响及机制

目的探讨氟伐他汀对高糖诱导的人足细胞血管内皮生长因子(VEGF)表达的影响及机制。方法体外培养人足细胞,随机分为A组(正常糖组)、B组(高糖组)、C组(高糖+氟伐他汀10-7mol/L组)、D组(高糖+氟伐他汀10-6mol/L组)、E组(高糖+氟伐他汀10-5mol/L组)和F组[高糖+胞外信号调节激酶(ERK)抑制剂PD98059组]。用Western blot检测VEGF和磷酸化ERK1/2(pERK1/2)蛋白表达。结果 B组VEGF、pERK1/2表达较A组明显升高,并呈时间依赖性(P<0.05)。F组VEGF、pERK1/2表达较B组显著降低(P<0.01)。与B组比较,C、D、E组VEGF及pERK1/2表达亦明显减少,并呈浓度依赖性(P<0.05)。结论高糖刺激体外培养人足细胞VEGF表达增加,氟伐他汀可减少高糖诱导的VEGF表达,其机制可能与氟伐他汀抑制ERK信号通路有关。     

Hepatoid Adenocarcinoma of the Stomach - A rare pathological entity

Hepatoid adenocarcinoma is a rare cancer with an extremely poor prognosis. Here, we describe two cases referred to our hospital with suspected gastric cancer. Gastrointestinal endoscopy revealed lesions in the stomach. Biopsy from the lesions was reported as adenocarcinoma. Both the patients underwent exploratory laparotomy. One was an operable lesion and the other was an inoperable lesion. Total gastrectomy was done in the operable lesion and feeding jejunostomy was done in the inoperable case. Histologically, both turned out to be hepatoid adenocarcinomas. Retrospective analysis showed the serum levels of alphafetoprotein (AFP) are markedly elevated in both cases. We describe this rare entity of hepatoid adenocarcinoma of the stomach, and review the literature concerning the clinicopathological aspects of the cases. Keywords: Gastric cancer, Hepatoid adenocarcinoma, Alpha Feto Protein, Stomach.