Pinar Ozdemir Geyik

Epidemiologic characteristics of rhinitis in Turkish Children: the International Study of Asthma and Allergies in Childhood (ISAAC) phase 2

Rhinitis is a common problem with important comorbidities. In order to search the association between rhinitis, allergic phenotypes and other risk factors in Turkish children, a parental questionnaire about allergic diseases and risk factors, and skin prick test (SPT) with 13 inhalant allergens were performed in a population‐based sample of 2774 children aged 9–11 yr. Bronchoprovocation testing with hypertonic saline (HS)and total IgE analysis were limited to a subsample of 350 children. Rhinitis was defined as a problem with sneezing, rhinorrhea, or nasal congestion when the child did not have a viral respiratory infection. The prevalences of ever rhinitis, current (last 12 months) rhinitis (CR), and ever hay fever were 36.3%, 30.6%, and 8.3%, respectively. SPT positivity rate was 20.4% among children with CR. Current wheezing and flexural dermatitis were significantly associated with CR. CR significantly increased the risk of asthma among both atopic and non‐atopic subjects [odds ratio (OR), 3.98; 95% CI, 1.81–8.76; and OR, 2.79; 95% CI, 1.82–4.26, respectively]. The association between CR and bronchial hyperreactivity (BHR) was not significant. The multiple logistic regression analysis revealed family atopy (OR = 2.25, 95% CI = 1.79–2.83, p < 0.001), current indoor heating with gas stove (OR = 1.78, 95% CI = 1.18–2.64, p = 0.006) and dampness/molds at home during the first year of life (OR = 1.70, 95% CI = 1.25–2.31, p = 0.001) as significant risk factors for CR. Turkish school children showed a high prevalence of rhinitis with a preponderance of non‐atopics. The highly significant association between rhinitis and asthma independent of atopic sensitization emphasize the importance of non‐atopic forms of rhinitis.

Prognostic Significance of Lymphovascular Invasion in Clinically Localized Prostate Cancer after Radical Prostatectomy

Whether lymphovascular invasion (LVI) is an independent prognostic factor in prostate cancer is still controversial. We retrospectively investigated its predictive role in disease progression following radical prostatectomy. The histological sections of radical prostatectomies from 71 clinically localized, prostatic adenocarcinoma patients were reviewed for LVI. Pre- and postoperative follow-up data were collected. LVI was identified in 15.5% of cases. Univariate analysis showed a significant association between LVI and advanced pathological stage, higher Gleason score, positive surgical margins, extraprostatic extension, seminal vesicle invasion, and lymph node metastasis (each p < 0.05). Multivariate analyses pointed to vascular involvement as a strong and independent predictor for PSA failure (p = 0.023), and reduced biochemical progression-free survival (p = 0.019). LVI in radical prostatectomy is an adverse prognostic finding that must be recorded in the pathology report.

Age-related changes in the incidence of pineal gland calcification in Turkey: A prospective multicenter CT study

The goal of this cross-sectional observational study was to determine the incidence of pineal gland calcification (PGC), to investigate the interaction of PGC and aging, and to compare the incidence of PGC among the populations living in Turkey. In a prospective study the rate of PGC on CT scans of 1376 individuals in six referral centers from different regions of Turkey was investigated, with emphasis on effects of climatological parameters and aging on PGC. It was found that the incidence of PGC increased rapidly after first decade and the increase remains gradual thereafter, higher in males than in females for all age groups. There was a significant difference for incidence and degree of PGC between different clinics and between both sexes (p<0.001). In addition, there was a significant difference for the degree of PGC between the clinics in low altitude group and those in high altitude group (p<0.001 for each). Logistic regression analysis revealed that age, sex, altitude and intensity of sunlight exposure significantly affected the risk of PGC (odds ratios (OR) 1.335, 95% confidence intervals (CI) 1.261-1.414, p<0.001; OR 1.900, 95% CI 1.486-2.428, p<0.001; OR 0.715, 95% CI 0.517-0.990, p<0.05; OR 0.997, 95% CI 0.994-0.999, p<0.01, respectively). Furthermore, by multiple linear regression analysis, high altitude and increased intensity of sunlight exposure were found to affect the degree of PGC (beta=0.003, p<0.001). It is concluded that there is a close relationship between PGC and the aforementioned parameters, supporting a link between the development of PGC and these. This study provides some reference data for new clinical studies on the putative role of pineal gland in future.

Power Doppler Ultrasonography of the Feeding Arteries of the Prostate Gland A Novel Approach to the Diagnosis of Prostate Cancer

The purpose of this study was to assess the role of spectral Doppler ultrasonographic parameters of the feeding arteries of the prostate for the detection of prostate cancer.

Preoperative Ultrasonographic Evaluation of Testicular Volume and Blood Flow in Patients With Inguinal Hernias

The purpose of this study was to investigate whether an inguinal hernia would have an impact on the testicular volume and blood flow by scrotal ultrasonography.

Systemic administration of interleukin-10 attenuates early ischemic response following spinal cord ischemia reperfusion injury in rats.

BACKGROUND The aim of this experimental study was to investigate the early effects of interleukin-10 (IL-10) and interleukin-1beta antagonist (anti-IL-1beta) against cellular damage, inflammatory reactivity, lipid peroxidation (LPO), and myeloperoxidase (MPO) activity induced by spinal cord ischemia reperfusion injury (IRI). METHODS Thirty-two single strain female Albino rats were divided into four groups: control (sham-operated), IRI-alone, IL-10-treated (100 mug/kg), and anti-IL-1beta-treated (1 mg/kg) groups after IRI. IRI was induced by balloon occlusion of the aorta and simultaneous hypovolemia during occlusion. The animals were sacrificed at 24 h. Histopathological and ultrastructural analyses, biochemical studies for determination of LPO and MPO activity and Comet assays (single cell electrophoresis for detecting DNA single strand breaks) were performed in all study groups. RESULTS Compared with the levels of control (sham-operated) animals, IRI produced a significant increase in the levels of LPO and MPO activity, and prominent tissue damage characterized by leukocyte infiltration, edema and neuronal and glial damage in the affected spinal cord in 24 h. The administration of IL-10 decreased LPO and MPO activity, and suppressed initial inflammatory response in the first 24 h. The effects of anti-IL-1beta were limited to decrease in LPO activity without considerable evidence of cellular preservation. CONCLUSIONS These data suggest that systemic administration of IL-10 attenuates the early ischemic response, and may restrict the tissue damage in the first 24 h after spinal cord ischemia reperfusion injury. Anti-IL-1beta has no considerable effect in this time window. The results of this preliminary study promote further studies with longer time windows on the effects of anti-inflammatory cytokines in spinal cord IRI.

Can telomere alterations predict biochemical recurrence in prostate adenocarcinoma? A preliminary study

Telomeres function in human somatic tissues to stabilize chromosome ends. Telomere shortening can be one of the ways that cause chromosomal instability in the pathogenesis of prostatic carcinoma. In the current study, we evaluated telomere length (TL) in normal and malignant prostate tissues, and its association with prognostic factors and with time to biochemical tumor recurrence. Tissue microarrays constructed from paraffin blocks from radical prostatectomy specimens containing 61 randomly selected cases were used. Sections were hybridized with a Cy3-labeled telomere-specific peptide nucleic acid probe. TL, proportional to probe fluorescence intensity, was visually evaluated. Statistical analysis was done to relate TL clinical and pathological prognostic variables. The majority (49/61) of prostate cancers displayed abnormally short telomeres. Univariate analysis revealed inverse correlation between telomere shortening in tumor and Gleason scores (p=0.017). Multivariate analyses pointed to TL as an independent predictor in addition to serum pre-operative PSA for reduced biochemical progression-free survival (p=0.035). Telomere shortening is a common alteration in prostatic adenocarcinoma. Normal or long telomeres are rarely seen and, when present, seem to provide a growth advantage for the tumor as being an advocate for poor differentiation.

Time distribution of seizures during long-term video-EEG monitoring.

The purpose of this study was to investigate the duration of monitoring, number of seizures recorded, and date and time of occurrence of seizures in different patient groups during video-EEG monitoring (VEEGM). Patients with partial or psychogenic seizures who were admitted to our VEEGM unit between September 1996 and March 2002 were retrospectively evaluated. Duration of monitoring, date and time of occurrence of seizures were identified in each patient. For practical reasons, a day was divided into 3 equal time periods (period I: 08–16; period II: 16–24 and period III: 24–08 hrs), and the period in which the seizure occurred was noted. Patients were classified in 5 groups: 1 -temporal; 2-frontal; 3-parieto-occipital; 4-psychogenic and 5-unclassified. Duration of monitoring, the number of seizures recorded and time distribution of seizures were identified in each group and compared statistically. We evaluated 746 seizures in 209 patients. Seizures were more likely to occur in periods I and III in groups 1 (p=0.004) and 5 (p<0.001). In group 4 they were more likely to occur in periods I and II (p<0.001). Duration of monitoring was not statistically different between the groups. However, the number of seizures recorded varied significantly (p=0.006). Patients in group 5 had the greatest number of seizures and were followed by groups 2, 4, 3 and 1, respectively. Groups also differed according to date of seizure occurrence (p<0.001). We conclude that the number of seizures recorded and time distribution of seizures during VEEGM are influenced by the lobe of onset of seizures.

Comparison of Extended Field of View and Dual Image Ultrasound Techniques for the Measurement of the Longitudinal Dimension of Enlarged Thyroid Glands

Background Extended field of view (EFOV) ultrasound (US) provides images with a large anatomic field of view and is a technical modification of conventional US. In this study, we aimed to assess the role of EFOV US in the accurate measurement of the longitudinal dimension of hyperplastic thyroid glands which were too big to be documented in a single image. In addition, the accuracy and reliability of EFOV US were compared with those of dual image US. Patients and Methods The actual longitudinal dimensions of 22 surgical specimens of thyroid glandular lobes excised by thyroidectomy were measured manually in the postoperative period. The longitudinal dimensions were also measured by two radiologists using EFOV US and dual image US after the surgical specimens were being placed in containers filled with gel. Results The accuracy and the reliability of EFOV US ( r = 0.997–0.999; reproducibility, 99.88%; repeatability, 99.88–99.92) were found to be higher than the dual imaging technique ( r = 0.970–0.986; reproducibility, 99.51%; repeatability, 99.56–99.59) in measuring the longitudinal dimension of enlarged thyroid glands. However, our results revealed that both US techniques can be considered in the evaluation of hyperplastic thyroid gland size. Dual image US should be regarded as the second choice for longitudinal dimension measurement of hyperplastic thyroid glands. Conclusion Based on our findings, we propose the use of EFOV US for accurate and reliable measurements in patients with an enlarged thyroid gland. EFOV US has a crucial role in the diagnosis and follow-up of patients undergoing medical therapy for diffuse or nodular goiter.

Interobserver and Intraobserver Variability in the Sonographic Measurement of the Size of the Thyroid Gland by Extended Field-of-View Sonography

Significant intra- and interobserver variation has been reported for estimating the dimensions and the volume of the thyroid gland by conventional sonography in adults. This study aimed to assess the role of extended field-of-view (EFOV) sonography for evaluating the size of the thyroid gland. The mediolateral, anteroposterior, and craniocaudal diameters of both thyroid lobes as well as total thyroid volumes of 30 female patients with the clinical diagnosis of goiter were measured three times by three radiologists with the EFOV sonography technique. Based on these findings, the correlation between the measurements of different operators and different measurements of the same operator was investigated. The interobserver variations for craniocaudal diameters of the right and left thyroid lobes were 3.3% ± 1.9% (mean ± SD) and 2.8% ± 1.3% (mean ± SD), respectively ( P = .012), which were lower than the variations calculated for transverse and mediolateral diameters. The interobserver variation for the calculation of the total glandular volume was 6.3% ± 3.8% (mean ± SD). The intraobserver variations for the three radiologists assessing the total thyroid volume were 4.9% ± 3.0%, 4.2% ± 2.4%, and 4.5% ± 1.7% (all mean ± SD), respectively (P = .521). EFOV sonography should be considered as an alternative technique for the dimension measurements of the thyroid gland, particularly in cases with goiter.