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Here we explain the reasons why we have a bronchial tree with 23 levels ofbifurcation. Based on Bejan's Constructal Principle we found that the best oxygen access to the alveolar tissues as well as carbon dioxide removal is provided by a flow structure composed of ducts with 23 levels of bifurcation (bronchial tree) that ends with spaces (alveolar sacs)(More)
Our aim was to evaluate the optimal treatment strategy addressing cardiovascular risk in obese and nonobese patients with polycystic ovary syndrome (PCOS). We planned a prospectıve randomized clinical study. Normoandrogenemic and oligoamenorrheic women with PCOS and impaired glucose tolerance (n = 96) were enrolled in the study. Six months of treatment with(More)
STUDY DESIGN A case report of intradural disc hernia mimicking an intradural extramedullary spinal tumor lesion in radiological evaluation. OBJECTIVE To describe a lumbar intradural disc herniation with atypical radiological appearance and point out the role of contrast magnetic resonance imaging (MRI) of the lumbar spine. SETTING Turkey. CASE REPORT(More)
BACKGROUND AND OBJECTIVES Cardiovascular disease in chronic kidney disease (CKD) is explained in part by traditional cardiovascular risk factors; by uremia-specific factors; and by abnormalities of mineral metabolism, factors involved in its regulation, and in the vascular calcification process. DESIGN, SETTING, PARTICIPANTS, & MEASUREMENTS In an(More)
BACKGROUND We aimed at evaluating the urinary levels of kidney injury molecule-1 ( KIM-1) and neutrophil gelatinase associated lipocalin (NGAL), and the relationship between these markers and clinical and laboratory variables in normoalbuminuric children with type 1 diabetes (T1D). METHODS The study group consisted of 60 (F/M: 28/32) children with T1D(More)
Pediatric cases of vitamin D intoxication (VDI) with dietary supplements have not been previously reported. We report on 7 children with VDI caused by consumption of a fish oil supplement containing an excessively high dose of vitamin D due to a manufacturing error. Seven children aged between 0.7 and 4.2 years were admitted with symptoms of hypercalcemia.(More)
We aimed to investigate the preventive effect of Infliximab (IFX), a tumor necrosis factor (TNF)-α inhibitor, on bleomycin (BLC)-induced lung fibrosis in rats. Rats were assigned into four groups as follows: I—BLC group, a single intra-tracheal BLC (2.5 mg/kg) was installed; II—control group, a single intra-tracheal saline was installed; III—IFX + BLC(More)
STATEMENT OF PROBLEM Reliable bonding between zirconia posts and composite resin core materials is difficult to achieve because of the smooth surface texture and lack of silica content of zirconia posts. PURPOSE The purpose of this study was to evaluate the effect of different surface treatments on the short-term bond strength and durability between a(More)
OBJECTIVE Some points of pathogenesis in polycystic ovarian syndrome (PCOS) are still unknown. In this study we evaluated the characteristics of this disease and its relationship with ghrelin in adolescence. DESIGN A prospective case control study was designed. Four groups: obese PCOS (n = 13), lean PCOS (n = 13), obese control (n = 10) and lean control(More)
The increasing prevalence of both asthma and obesity are major health problems. Recent studies established a possible link between obesity and asthma; however, the underlying mechanism is not clear. The aim of the study was to analyze the prevalence of metabolic syndrome in postmenopausal subjects with asthma and search the interactions between adipokines,(More)