Time filter

Source Type

Katowice, Poland

To find morphometric factors predisposing to the development of corneal decompensation following cataract surgery. Study group consisted of 50 patients after keratoplasty performed as pseudophakic/aphakic corneal edema (PCE/ACE) treatment. Control group formed 50 patients after cataract removal without signs of corneal decompensation. Specific subgroups were analyzed too. The morphometric data of the fellow eye anterior chamber were obtained with Visante OCTTM. Anterior chamber depth and anterior chamber angle width were significantly smaller in study group (p < 0.00001, U-test). With excluded preoperative risk factors: Fuchs dystrophy, acute angle closure glaucoma attack history the significant differences were also observed (p < 0.01). In Fuchs' dystrophy and intraoperative complication subgroups comparison these two anterior chamber parameters were smaller too (p < 0.001). Anterior chamber width was also smaller in study group with p = 0.001. Central corneal thickness was higher in study group with p = 0.013. After exclusion of patients with Fuchs' dystrophy there was no difference in comparison (p = 0.34). The difference in total axial length comparison was insignificant (p = 0.18). Relative anterior microphthalmos was diagnosed in 31 patients of study group (62%) and in 17 of control (34%). Small anterior chamber dimensions and higher central corneal thickness due to Fuchs' dystrophy are factors influencing the risk of PCE/ACE development. Source

Paduch R.,Maria Curie Sklodowska University | Jakubowicz-Gil J.,Maria Curie Sklodowska University | Niedziela P.,District Railway Hospital
Indian Journal of Experimental Biology | Year: 2010

Tumor chemoresistance and metastasis are some of the most important problems in colon cancer therapy. In the present study, co-cultures of human colon carcinoma cell spheroids, obtained from different grades of tumor, with human colon epithelium, myofibroblast and endothelial cell monolayers were performed. The purpose of these co-cultures was to reflect, in in vitro conditions, different stages of colon tumor development. In order to investigate the invasive capacities of the tumor cells and their resistance to chemotherapy, HGF, HSP27, HSP72 and MRP levels were analyzed after incubation of the co-cultures with IL-1p and irinotecan (CPT-11) added as single agents or in combination. Myofibroblasts produced significantly higher amounts of HGF than epithelial cells. Tumor cells released trace amounts of this molecule. In co-cultures, IL-1p induced HGF release, while CPT-11 alone or combined with IL-1p decreased HGF secretion. An immunoblotting analysis followed by densitometry revealed that the combination of IL-1 p plus CPT-11 added to the co-cultures led to a decrease in HSPs and MRP levels. In conclusion, direct and paracrine interactions of colon tumor cell spheroids with normal cells and exogenously added CPT-11 change HSP27, HSP72 and MRP expression in comparison to monocultures. IL-1p and CPT-11, dependent on whether they are added separately or jointly, differentially modulate HGF expression in monocultures of colon tumor spheroids or normal cells and their co-cultures. Source

Wojciak-Kosior M.,Medical University of Lublin | Paduch R.,Maria Curie Sklodowska University | Matysik-Wozniak A.,Medical University of Lublin | Niedziela P.,District Railway Hospital | Donica H.,Medical University of Lublin
Folia Histochemica et Cytobiologica | Year: 2011

In this article, we look at how ursolic and oleanolic acids can be used for the purpose of quality control of natural products used in dermatocosmetology as well as of various other therapeutic preparations. Ursolic acid (UA) and oleanolic acid (OA) are pentacyclic triterpenes and they are constituents of many medicinal herbs. In this study, we analyzed the cytotoxic and anti-proliferative activity of OA and UA against normal human skin fibroblasts (HSF). Additionally, the scavenging activity of free radicals of both acids was analyzed. The sensitivity of cells to OA and UA activity was determined using a standard spectrophotometric (MTT) assay. The free radical scavenging activity of OA and UA was measured using the DPPH test. The F-actin cytoskeletal proteins organization was analyzed using TRITC-phalloidine fluorescent staining. The cytotoxic activity of the analyzed acids was determined using Neutral Red (NR) uptake assay. Of the two isomeric compounds, UA showed a higher cytotoxic activity against HSF cells than did OA. Our investigations showed that OA, in view of its non-toxic nature, may be used as a supplementary factor for dermal preparations. © Polish Society for Histochemistry and Cytochemistry Folia Histochem Cytobiol. 2011. Source

Wozniak A.,Medical University of Lublin | Niedziela P.,District Railway Hospital | Rejdak R.,Medical University of Lublin
Balkan Medical Journal | Year: 2014

Background: Euphrasia officinalis L. is an herb traditionally used in folk medicine, mainly in the treatment of eye disorders. Aims: The present study analyzed the activity of three extracts of E. officinalis L. (ethanol, ethyl acetate and heptane) on cultured human corneal epithelial cells (10.014 pRSV-T). Study Design: In vitro study. Methods: Toxicity, free radical scavenging activity and the immunomodulatory effects of the extracts were tested using the thiazolyl blue tetrazolium bromide (MTT) or Neutral Red, 2,2-Diphenyl- 1-picrylhydrazyl (DPPH) and ELISA tests, respectively. Moreover, nitric oxide levels and cytoskeleton architecture were analyzed after corneal cell incubation with the plant extracts. Results: We show that the biological effect depended on both the concentration and the extraction solvent used. Heptane extracts, distinct from those in ethanol and ethyl acetate, were toxic to 10.014 pRSV-T cells at low concentrations (25 μg/mL) and did not demonstrate free radical scavenging effects. All tested extracts decreased pro-inflammatory cytokine expression (IL-1β, IL-6 and TNF-α) and also anti-inflammatory IL-10 expression by human corneal cells when the extracts were added to the cell culture medium for 24 h. Conclusion: In conclusion, we show that the promising effects of the application of E. officinalis L. preparations as a supplementary therapy for eye disorders are associated with the ethanol and ethyl acetate extracts, not the heptane extract. © Trakya University Faculty of Medicine. Source

Kryczka T.,Norwegian University of Science and Technology | Kryczka T.,Polish Academy of Sciences | Ehlers N.,Aarhus University Hospital | Nielsen K.,Aarhus University Hospital | And 3 more authors.
Current Eye Research | Year: 2013

Purpose: To investigate the difference in metabolic profile of keratoconic and normal corneas using two different analysis methods. Methods: Keratoconic corneas were obtained from patients (aged 19-27) during transplantation surgery. Control samples were obtained from human donors (aged 61-75) 1-8 h post-mortem. The metabolic profile of tissues was investigated with high-resolution magic angle spinning 1H nuclear magnetic resonance (NMR) spectroscopy and high performance liquid chromatography (HPLC). Results: Nine amino acids and 20 metabolites were assigned with HPLC and NMR spectroscopy, respectively. No significant biochemical difference was revealed between keratoconic and control samples, which represent distant age groups. Conclusions: It suggests that development of keratoconus might be related to the accelerated ageing of the cornea. This issue warrants further studies. © Informa Healthcare USA, Inc. Source

Discover hidden collaborations