Myofibroblast involvement in tubular basement membrane remodeling in type II diabetic nephropathy

Vol. 52 No. 1 Suppl., 2011
This supplement was not sponsored by Outside Organizations.

ROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY

E. Mandache, Mihaela Gherghiceanu, C. Serafinceanu, M. Penescu, G. Mircescu

Diabetic nephropathy is always accompanied by tubulointerstitial damage. The mechanisms and the cells involved are not entirely clarified. The damaged tubules may regenerate or undergo necrosis or apoptosis. The purpose of this work was to investigate the structural transformations of both interstitial cells and extracellular matrix of the kidney stromal area in patients with type II diabetes mellitus associated with diabetic nephropathy. Tubulointerstitial fibrosis is characterized by loss of renal tubules and interstitial capillaries and the accumulation of extracellular matrix proteins. Tubular basement membranes were found to be a target of the remodeling process of the stromal area. Thickening, splitting and duplication were the main lesions of these membranes. Much attention has been focused on the importance of myofibroblasts in the progression of renal fibrosis. The results represent strong arguments for a direct involvement of myofibroblasts in the process of renal interstitial remodeling, tubular basement membrane thickening, and stromal fibrosis in the late stages of diabetic nephropathy.

Corresponding author: Eugen Mandache, MD, PhD, e-mail: mandache.eugen@yahoo.com

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ROMANIAN JOURNAL of MORPHOLOGY and EMBRYOLOGY

Madalina Bosoteanu, C. Bosoteanu, Mariana Deacu, Mariana Aschie

Romania has supremacy in terms of European statistical indicators of cervical cancer, a fact attested by the studies made by international organizations. The present study is based on cytological evaluation of a group of 9269 cervico-vaginal smears, segregated in various groups that were monitored by standard diagnostic and therapeutic protocols, attitude based on an excellent collaboration with the gynecologist. This cooperation led to the elaboration of a set of protocols for follow-up of patients assessed by Babes-Papanicolaou test, in order to assure an adequate management for all cervical lesions. An important feature of this study is that histopathological examination of cases cytologically designated as HSIL showed, along with changes of HSIL-CIN2 and HSIL-CIN3, also carcinoma in situ and invasive squamous cell carcinoma lesions, emphasizing the importance of the pathologic diagnosis of certainty. This idea is also supported in cases of glandular cell atypia, whose microscopic evaluation identified premalignant and malignant lesions, both in endometrial and endocervical site. A particular aspect of the analyzed batch consists in the description of a subgroup of false-negative cytodiagnostic results associated with cervical carcinoma, highlighting the causes and the possibilities to avoid further errors. Overall analysis of results reveals major involvement of the pathologist in providing the sequence from cytology to histopathological diagnosis and to establish diagnostic continuity.

Corresponding author: Madalina Bosoteanu, Lecturer, MD, PhD, e-mail: mbosoteanu@yahoo.com

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