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Biomedical subjects

R Slezák

Publications and source records attributed to R Slezák.

15 recordsLinked to original sources
PubMed2006

[Visual functions' detailed evaluating in patients with Sjögren's syndrome before and after intracanalicular implants' (Smart Plug) insertion--(first results)].

UNLABELLED: The aim of the study was to determine exact visual functions (log MAR [minimal angle of resolution] and CS [contrast sensitivity]) and to evaluate corneal topographic maps in patients with established (by means of laboratory and biopsy examinations) Sjogren's Syndrome, and to determine the difference in subjective symptoms before and after insertion of the intracanalicular implants as well. PATIENTS AND METHODS: Twelve eyes (1 man, 6 women) with established Sjogren's syndrome were examined before and during two months after the insertion of the plugs. The best-corrected visual acuity (BCVA) was assessed on Landolt C rings optotypes. CS was measured on computer-controlled device (Neuroscientific Corp., U.S.A.) in 6 space-frequencies (0.74-29.55 c/deg). The corneal topographic changes (Keraton Opticon) were established by means of comparing total aberrations values before and after the intracanalicular implants' (Smart Plugs type) insertion. The control group for visual functions assessment consisted of 10 woman (20 eyes) of similar middle age. RESULTS: The BCVA on log MAR optotypes was 0.84 (0.69-0.95) before and 0.88 (0.52-1.23) after the insertion, on both occasions, it was lower than in the control group. The CS was before the insertion in all of the spatial frequencies lower, the largest differences were in the frequencies range 1.97-7.29 c/deg (p < 0.01). After the treatment, the values grow but they don't reach the values of the control group. Subjective complains of the patients decreased markedly; in 100% they had relief, in 3 cases they referred improvement up to 50%; no patient observed tearing. The frequency of drops' application has decreased by 63%. The Schirmer test, in 100% positive before the treatment, was after the insertion in 75% negative; the height of the tear-meniscus was positive in 100% before the procedure, and after that, its measurement improved to 1 mm in 91%; in 9% it was 1.5 mm. We also noticed changes of the ocular surface by means of lissamine green staining; this test was before the procedure positive in 100%, the improvement after that was in 63%. The regularity of the corneal surface is the determining factor of visual functions in "dry eyes". The measurement of the corneal topography is useful in differential diagnosis and helps to distinguish mild and more serious conditions of dry eye. The improvement of BCVA and CS values after insertion corresponds with patients' subjective evaluating. The best value of the treatment is improvement of the patients' comfort; furthermore, after insertion of the permanent plugs they feel pronounced subjective relief and lowering of the frequency of drops application.

Adult↗
PubMed2006

Low grade myofibroblastic sarcoma of tongue: a case report.

A case of a 24-year-old woman with a 6 weeks lasting nodule of the right margin of the tongue is described. The nodule was 20 mm in diameter and showed surface ulceration. The diagnosis of low grade myofibroblastic sarcoma was supported by histological, immunohistochemical and electronmicroscopic examination. Although the tumor resection was not complete, the patient is free of disease 1 year after operation. The differential diagnostics of low grade myofibroblastic sarcoma is discussed.

Adult↗
PubMed2004

Antismoking education in Czech medical and dental faculties.

Smoking education has been included in the curricula in all the medical faculties of the Czech Republic, although the scope of the education varies. At each of the faculties, a member of the staff has been appointed as co-ordinator of smoking education. These coordinators promote a sharing of experience and distribution of teaching materials. At the majority of faculties, obligatory workshops are held for all students to learn about smoking and smoking treatment within the framework of preventive medicine. In addition, selected students undertake selected studies on smoking and health as part of their research. At the Medical Faculty of Masaryk University, Brno, smoking education is included in the majority of theoretical and clinical subjects and its effectiveness is repeatedly assessed during the 6-year course study by testing the students' knowledge and smoking behaviour. The evaluation provides a basis for further modification and improvement of the education. Currently, a fundamental transformation of dental education is being undertaken in all medical faculties of the Czech Republic. These new curricula will benefit from the curriculum of the Medical Faculty, at Hradec Králové, where the changes that were made 5 years ago involve theoretical and practical education in the risks of smoking for oral health throughout the 5-year stomatology courses. Postgraduate medical education involves professional 2-day seminars for general practitioners on approaches to smoking cessation and smoking dependence treatment, and professional materials such as smoking cessation guidelines are published in medical and specialist journals.

Attitude to Health↗
PubMed1999

Serum soluble adhesion molecules (sICAM-1, sVCAM-1, sE-selectin) and neopterin in patients with Sjögren's syndrome.

Sjögren's syndrome is a systemic autoimmune disease characterized by focal lymphocytic infiltration of the salivary and lacrimal glands. Expression and up-regulation of adhesion molecules and activation of cellular immune system is essential for the migration of inflammatory cells into tissues. Soluble forms of adhesion molecules sICAM-1, sVCAM-1, sE-selectin and neopterin were analyzed in serum of 17 patients with primary Sjögren's syndrome and 11 patients with secondary Sjögren's syndrome together with 26 age-matched healthy blood donors. There were significantly higher serum concentrations (mean +/- 1SD) of sICAM-1 (362.0 +/- 67.9 ng/ml, p < 0.001), sE-selectin (78.7 +/- 28.1 ng/ml, p < 0.001) and neopterin (17.9 +/- 6.4 nmol/l, p < 0.001) in primary Sjögren's syndrome patients in comparison to control group (sICAM-1: 128.3 +/- 46.9 ng/ml, sE-selectin: 46.3 +/- 39.5 ng/ml, and neopterin: 7.6 +/- 2.3 nmol/l). Sera from patients with secondary Sjögren's disease contained significantly higher levels of sICAM-1 (356.0 +/- 62.4 ng/ml, p < 0.001), sE-selectin (65.5 +/- 27.0 ng/ml, p < 0.05), and neopterin (18.8 +/- 9.8 nmol/l, p < 0.001) in comparison with control group. There were no significant differences between patients with primary and secondary Sjögren's syndrome in any parameters tested. No statistically significant differences in serum levels of sVCAM-1 were found either in patients with primary or secondary SS compared to control group.

Adult↗
PubMed1997

[Cell-mediated immunity in patients with Sjogren's syndrome].

BACKGROUND: Sjögren's syndrome (SS) is considered an autoimmune immunopathological disease, which is characterized by disorders of humoral and cell-mediated immunity. The objective of the work was to assess the ratio of T and B lymphocytes, subpopulations of T lymphocytes and NK cells in the peripheral blood of patients suffering from SS. METHODS AND RESULTS: The investigated group was formed by 22 patients with the diagnosis of primary SS (mean age 55.7 years, range 39-83 years), 17 patients with the diagnosis of secondary SS (mean age 60.5 years, range 45-79 years). The ration of CD3-, CD4-, CD8-, CD19-, CD5-, CD25- HLA DR- cells in full blood was assessed by the monoclonal antibody technique of direct immunofluorescence, using evaluation by means of a flow cytometer. The results were compared by statistical methods with a control group of blood donors using Student's t-test, A relative increase of the ratio of CD3- T lymphocytes was revealed in patients with primary SS (75.3 +/- 17.9 %, p = 0.380) and secondary SS (73.7 +/- 11.8, p = 0.326), as compared with controls (65.3 +/- 10.3%). The absolute number of the subpopulation of suppressor helper inducer CD4+ T lymphocytes was markedly lower in patients with primary SS (0.056 +/- 0.27 - 10(9)/l, p = 0.0154), as compared with controls (0.81 +/- 0.27, 10(9)/l. The relative number of suppressor cytotoxic CD8- T lymphocytes was significantly higher in patients with primary SS (33.7 +/- 15.0%, p = 0.0001 and secondary SS (30.5 +/- 11.0%, p = 0.0002), as compared with controls (17.2 +/- 6.0%). The absolute number of inhibitory cytotoxic T lymphocytes was significantly higher in patients with primary SS (0.47 +/- 0.3. 10(9)/1, p = 0.0084) and patients with secondary SS (0.48 +/- 0.3, 10(9)/l, p = 0.0072). The relative number of CD57+ NK cells was significantly higher in patients with primary SS (21.1 +/- 11.0%, p = 0.0001) and secondary SS (19.3 +/- 11.7%, p = 0.0023). The absolute number of NK cells was significantly higher in patients with primary SS (0.28 +/- 0.20, 10(9)/l, p = 0.0025 and in patients with secondary SS (0.31 +/- 0.23, 10(9)/l, p = 0.01). CONCLUSIONS: The revealed statistically significant increases in the number of T lymphocytes in patients with Sjögren's syndrome is probably caused by a significant increase of the subpopulation of CD8+ suppressor cytotoxic T lymphocytes. The latter probably overlap with the population of NK cells. These immunological abnormalities are even more marked in patients with primary Sjögren's syndrome due to the decrease of the absolute number of CD4+ helper inducer T lymphocytes.

Adult↗
PubMed1997

Elevation of serum soluble intercellular adhesion molecule-1 (sICAM-1) and beta-2-microglobulin in Sjögren's syndrome.

Sjögren's syndrome is a chronic inflammatory disease which is believed to be immunologically mediated. It is marked by inflammation and destruction of the salivary glands and lacrimal glands. We have found significantly higher serum levels of sICAM-1 and beta-2-microglobulin in both primary Sjögren's syndrome patients (429.1 +/- 114.33 ng/ml, 4.4 +/- 1.5 ug/ml resp.) and secondary Sjögren's syndrome patients (424 +/- 140.73 ng/ml, 4.4 +/- 2.67 ug/ml resp.) in comparison with healthy controls (189.1 +/- 42.34 ng/ml, 1.3 +/- 0.38 ug/ml resp.). The serum level of beta-2-microglobulin was significantly correlated with the serum level of sICAM-1 in secondary Sjögren's syndrome patients' group.

Adult↗
PubMed1995

Evaluation of the immune status in patients with primary and secondary Sjögren's syndrome.

The total white blood cell count, percentage and total count of lymphocytes, CD3+, CD4+, and CD8+ subpopulations of T-lymphocytes, population of CD20+ B-lymphocytes, the ability of polymorphonuclears to phagocyte yeasts, the ability of polymorphonuclear cells to kill serum-resistant strain of E. coli and O2-dependent killing capacity of polymorphonuclears were evaluated in a group of 10 patients with the sicca syndrome and in a group of 9 patients with secondary Sjögren's syndrome and in a healthy control group. There was found a significant decrease in the relative and absolute counts of CD4+ helper/inducer T cells and in the activity of phygocytic cells in both groups of patients with Sjögren's syndrome as compared with the control group. There was no significant difference in the evaluated parameters between primary and secondary Sjögren's syndrome patients.

Adult↗
PubMed1995

Serum level of IL-6 in patients with primary and secondary Sjögren's syndrome.

The level of interleukin-6 in the serum of 17 patients suffering from the primary Sjögren's syndrome and of 16 with secondary Sjögren's syndrome were determined by means of ELISA. The mean value of IL-6 in primary and secondary Sjögren's syndrome was 2.41 pg/ml (1.45-3.37 pg/ml) and 3.01 pg/ml (1.63-4.39 pg/ml). The normal serum level of IL-6 was below 3.0 pg/ml. The serum level of IL-6 was not elevated in Sjögren's syndrome patient, there was no significant difference in the serum level of IL-6 between both groups of the patients.

Enzyme-Linked Immunosorbent Assay↗
PubMed1991

[Incidence of dental caries and dental calculus in the front dentition].

The attempt had been made to determine interrelations in the incidence of dental caries and dental of frontal dentition in a total of 100 healthy individuals aged 21-40 years. Caries susceptibility was evaluated as averagely higher in the upper frontal denture and lower in lower one. Both supragingival and subgingival forms of dental calculus were of rare occurrence in upper portion, and they occurred massively in lower portion of denture. In the upper frontal portion, the significant correlation has been stated statistically between the caries susceptibility and the quantity of both forms of dental calculus. The higher was caries susceptibility, the lower was the amount of dental calculus. The lower frontal denture showed the significant differences as to the incidence of supragingival calculus at various degree of caries susceptibility in the same sense as in the upper one. No difference in unsatisfactory status of dental hygiene was determined in both portions observed. The periodontal disorder was more expressed with age and it showed no significant difference in both mentioned portions.

Adult↗
PubMed1991

[Hand, foot and mouth disease].

The authors described a case of viral stomatitis of the type of hand, foot and mouth disease with mucosal and skin manifestations in an adult with a significant rise of neutralizing antibodies against the Coxsackie B4 virus.

Adult↗