Ionescu C.,University of Medicine and Pharmacy, Cluj-Napoca |
Braicu C.,University of Medicine and Pharmacy, Cluj-Napoca |
Chiorean R.,Albert Ludwigs University of Freiburg |
Petric R.C.,University of Medicine and Pharmacy, Cluj-Napoca |
And 5 more authors.
Journal of Gastrointestinal and Liver Diseases | Year: 2014
Background & Aims: Te prognosis of colorectal cancer (CRC) varies considerably, and there is a compelling need to identify novel biomarkers with prognostic significance. Te aim of the present study was to evaluate the prognostic value of a panel of six genes (CDH1, SMAD3, TGFβ1, ICAM-1, TIMP-1 and MUC12) in CRC patients.Methods. We evaluated these genes by qRT- PCR in normal and CRC tumor tissue, and correlated the relative gene expression values with clinical, pathological aspects and other biological factors.Results. RNA expression levels of CDH1, SMAD3, TGFβ1, ICAM-1, TIMP-1 and MUC12 were measured by qRT-PCR in a set of 39 tumor samples and non-cancer tissue. Statistically significant increases in expression levels were found for ICAM-1 and TIMP-1 when comparing tumor samples to the non-tumor group.Conclusions. Among the genes which displayed differential expressions between tumor tissue and adjoining normal tissue, the ones that presented statistically significant correlations were TIMP-1 and SMAD3, possibly with prognostic significance. © 2014 Romanian Society of Gastroenterology. All Rights reserved.
Scrobota I.,University of Medicine and Pharmacy, Cluj-Napoca |
Scrobota I.,University of Oradea |
Scrobota I.,Prof Dr I Chiricuta Oncology Institute |
Bolfa P.,University of Agricultural Sciences and Veterinary Medicine, Cluj-Napoca |
And 7 more authors.
Journal of Physiology and Pharmacology | Year: 2016
We studied the effect of grape seed extract Burgund Mare (BM) on oral carcinogenesis and compared it with that of curcumin (CU). Wistar rats were divided into six groups (n = 10): 4-nitro-quinoline-1-oxide (4NQO) oral carcinogenesis was induced to groups 1 – 5; groups 2 and 3 received BM and CU respectively during initiation and groups 4 and 5 BM and CU during post-initiation of carcinogenesis; group 6 represented the negative control group. Total malondialdehyde (MDA) and reduced glutathione (GSH) were assayed fluorometrically in oral tissue (gingival, jugal, palatal, lingual mucosa) and serum. Histopathological exam was performed and a dysplasia score given to each oral mucosal lesion. Ki67, cyclin D1, p63, Bcl2 and p53 were immunohistochemically evaluated. BM and CU reduced tissue MDA values elevated by 4NQO (P = 0.000). The difference between CU and BM effect was significant in the initiation (P = 0.02) but not in the post-initiation phase of carcinogenesis (P = 0.58). Tissue GSH levels decreased by 4NQO (P < 0.001) were not significantly modified by BM or CU. Serum MDA levels increased by 4NQO (P = 0.000) were significantly lowered by CU (P = 0.04) and BM (P = 0.04) during initiation and by CU during post-initiation of carcinogenesis (P = 0.01). CU was more potent than BM during post-initiation of carcinogenesis (P = 0.01). Serum GSH lowered by 4NQO (P = 0.55) was significantly decreased by BM and CU (P < 0.012), with no significant difference between groups receiving BM or CU. Moderate dysplasia was the most advanced dysplasia induced and gingival localization the most frequent. Both BM and CU lowered dysplasia scores, with BM being the most efficient during post-initiation of carcinogenesis (P = 0.001). Ki67, cyclin D1, p63, Bcl2 and p53 expression increased with dysplasia scores. BM showed chemopreventive properties during initiation and post-initiation of oral carcinogenesis, reducing local and general oxidative stress and the intensity of dysplasia. During post-initiation of carcinogenesis BM and CU exhibited similar effects. © 2016, Polish Physiological Society. All right reserved.
Decean H.,University of Medicine and Pharmacy, Cluj-Napoca |
Fischer-Fodor E.,Prof Dr I Chiricuta Oncology Institute |
Tatomir C.,Prof Dr I Chiricuta Oncology Institute |
Perde-Schrepler M.,Prof Dr I Chiricuta Oncology Institute |
And 6 more authors.
Clujul Medical | Year: 2016
Background and aims. The depletion of the ozone layer allows overexposure of the skin to UV radiation, which is prolonged due to the increasing life expectancy, together with inappropriate life habits contribute to the increasing incidence of cutaneous malignancies. Plant extracts with antioxidant capacities are frequently employed as a means to protect skin against ultraviolet (UV) radiations, thus preventing skin cancers. In the present study we assessed a red grape seed extract (GSE) potential capacities to reduce ultraviolet B (UVB) radiation-induced reactive oxygen species (ROS) and subsequent apoptosis in a human keratinocytes cell line (HaCaT). We identified molecules and pathways modulated by the GSE through which this may exert its photoprotective effect. Methods. The GSE was standardized according to its polyphenolic content and the most important biologically active compounds, such as epigallocatechin and epicatechin, catechin hydrate, procyanidin B and gallic acid were evidenced by highperformance liquid chromatography. According to the plant extract cytotoxicity on the HaCaT cell line, two concentrations were selected for testing from the non-toxic range: GSE1 (37.5 μgEqGA/ml) and GSE2 (75 μgEqGA/ml). The level of ROS was evaluated with CM-H2DCFDA assay, while apoptosis, Bax-α and NF-kβ p65 proteins with ELISA and confirmed by western-blot. Results. Both concentrations of the extract decreased the level of ROS in UVB-irradiated keratinocytes (p < 0.001), whereas apoptosis and Bax-α pro-apoptotic protein were only reduced by the higher concentration (GSE2). The NF-kB p65 protein level registered increasing values in time after UVB exposure of the cells, while the tested plant extract re-established its level when its smaller concentration was used (GSE1). Conclusion. These results encourage further studies on this extract in order to identify other molecules and pathways through which this extract might exert its beneficial effects and also recommend its use as a potential photoprotective agent.
Fetica B.,Prof Dr I Chiricuta Oncology Institute |
Pop B.,University of Medicine and Pharmacy, Cluj-Napoca |
Lisencu C.,Prof Dr I Chiricuta Oncology Institute |
Lisencu C.,University of Medicine and Pharmacy, Cluj-Napoca |
And 6 more authors.
Clujul Medical | Year: 2014
Background and aims: Castleman's disease is a rare disorder situated at the boundary between reactive and neoplastic conditions. The pathogenesis is a subject of debate and the limited number of cases renders the study of the disease difficult. In our paper we present a series of six cases of Castleman disease with emphasis on the clinical presentation, pathology examination and the use of immunohistochemistry in the final diagnosis of the cases. Patients and method: The classification of the disease was based on clinical, imaging and pathological assessment. Specimens were obtained by surgical excision and were routinely processed for the pathology examination. Results: All cases were unicentric disease. Two cases were locally extensive. The clinical symptoms were related mostly to compression effects. Five case were of the hyaline-vascular type and one was included in the plasma cell variant. One case showed angiomyoid differentiation. Conclusions: We strongly believe that by understanding the pathogenesis of the precursor lesions we will gain better understanding of the pathways that lead to neoplasia and that Castleman disesase is a very interesting "natural experiment" illustrating the progression from chronic antigen stimulation to reactive lymphoid hyperplasia and finally to overt lymphoid neoplasia.