Effect of People Moving near Short-Range Indoor Propagation Links at 2.45 GHz

Kara Ali,Bertoni Henry L. The Korea Institute of Information and Commucation 2006 Journal of communications and networks Vol.8 No.3

Measurement results are presented for the effects of people moving near and across short-range indoor propagation links at 2.45 GHz (ISM band). Excess loss due to scattering and blockage by human bodies in the vicinity of one terminal were measured for different radio links in an office environment. Statistics on fades due to human body motion are given. Polarization coupling (depolarization) for various radio links was measured, and correlation of polarization components is discussed as a basis for using polarization diversity reception in short-range indoor systems.

Pomegranate Seed Extract Attenuates Chemotherapy-Induced Acute Nephrotoxicity and Hepatotoxicity in Rats

Kerim Çayır,Ali Karadeniz,Nejdet Şimşek,Serap Yıldırım,Emre Karakuş,Adem Kara,Hürrem Turan Akkoyun,Emin Şengül 한국식품영양과학회 2011 Journal of medicinal food Vol.14 No.10

Cisplatin (CDDP), one of the most active cytotoxic agents against cancer, has adverse side effects, such as nephrotoxicity and hepatotoxicity. The present study was designed to investigate the potential protective effect of pomegranate seed extract (PSE) against oxidative stress caused by CDDP injury of the kidneys and liver by measuring tissue biochemical and antioxidant variables and immunohistochemically testing caspase-3–positive cells. Twenty-four Sprague–Dawley rats were divided into 4 groups: control; CDDP: injected intraperitoneally with CDDP (7 mg/kg body weight, single dose); PSE: treated for 15 consecutive days by gavage with PSE (300 mg/kg per day); and PSE+CDDP: treated by gavage with PSE 15 days after a single injection of CDDP. The degree of protection against CDDP injury afforded by PSE was evaluated by determining the levels of malondialdehyde as a measure of lipid peroxidation. The levels of glutathione and activities of glutathione peroxidase, glutathione S-transferase, and superoxide dismutase were estimated from liver and kidney homogenates; the liver and kidney were also histologically examined. PSE elicited a significant protective effect toward liver and kidney by decreasing the level of lipid peroxidation; elevating the levels of glutathione S-transferase; and increasing the activities of glutathione peroxidase, glutathione S-transferase, and superoxide dismutase. These biochemical observations were supported by immunohistochemical findings and suggested that PSE significantly attenuated nephrotoxicity and hepatotoxicity by the way of its antioxidant, radical-scavenging, and antiapoptotic effects. This PSE extract could be used as a dietary supplement in patients receiving chemotherapy medications.

Poster Session:PS 0481 ; Nephrology : Analgesic Nephropathy Associated with Total Anuria

( Yaloin Onem ),( Ali Kutlu ),( Seyit Ahmet Uslu ),( Barbaros Basbug ),( Muslum Sagir ),( Yusuf Hazcerli ),( Mustafa Hatipoglu ),( Kemal Kara ),( Ramazan Arikan ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Introduction and Aim:While ischemia and nefrotoxins account for almost 45 % of all acute renal failure cases, prerenal (caused by congestive cardiac failure, liquid insuffi - ciency, sepsis and medication) azotemia accounts for around 20%. Among nefrotoxins, nonstereoid anti-infiammatory drugs (NSAII) may affect kidneys through multiple mechanisms (causing hemodynamic, acute allergic interstitial nephritis, papillary necrosis or glomerular nephritis). Herein, we present a patient who developed analgesic nephropathy associated with total anuria. Case: A patient with a medical history of benign prostatic hyperplasia, coronary artery disease, hypertension and tuberculosis was admitted to our department of emergency with complaints of dyspnea and headache. Laboratory examination revealed the following Results: urea: 138 mg/dL, kreatinin: 5,20 mg/dL, BK: 19300, ALT: 319 U/L AST: 324 U/ L LDH: 1947 U/L. The patient was diagnosed with total anuria. Because the patient had a history of analgesic usage, he was scheduled to undergo hemodialysis 3 times per week with a prediagnosis of analgesic nephropathy. Although initially renal function tests demonstrated a slight deterioration (urea: 177 mg/dL and creatinine: 8 mg/dL) they displayed a gradual decrease following ongoing hemodialysis sessions and consequently returned to normal (urea: 48 mg/dL and creatinine: 1, 25 mg/dL). The patient also received piperacillin/tazobactam 3x 2, 25 gr/day due to a concern for aspiration pneumonia. Diagnostic bronchoscopy results were in compliance with fi brosis at microscopic level. Conclusion/Recommendations: Analgesic nefropathy should be investigated when inquiring for the etiology of acute renal failure. Patients with total anuria should receive comprehensive treatment comprising renal replacement therapy such as hemodialysis. Additionally, interstitial lung disease and overlapping aspiration pneumonia may complicate the condition. Therefore, they also should be considered. Even patients with total anuria may return to normal life following a comprehensive and rigorous approach.

Polycystic Ovary Syndrome and Risk of Endometrial Cancer: a Mini-Review

Tokmak, Aytekin,Kokanali, Mahmut Kuntay,Guzel, Ali Irfan,Kara, Aydan,Topcu, Hasan Onur,Cavkaytar, Sabri Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.17

The polycystic ovary syndrome is the most common endocrinological disorder of reproductive age women with a prevalence of 5 to 8 %. The most common diagnostic criteria used for polycystic ovary syndrome are oligo- or an-ovulation, clinical and/ or biochemical signs of hyperandrogenism and polycystic ovaries. Hyperandrogenism results in increased estrogen levels and lack of cyclic progesterone due to anovulation and persistent stimulation of the endometrium may lead to endometrial hyperplasia or adenocarcinoma development. In this mini review, we aimed to evaluate the possible relationship between polycystic ovary syndrome and endometrial cancer.

Poster Session : PS 0312 ; Hematology : Hemolysis Following Mitral Ring Annuloplasty and Iron Defi ciency Anemia Case Caused by Duodenal Diverticulum

( Zeynep Tugba Guven ),( Selma Karaahmetoglu ),( Ali Atilla Aydin ),( Rukiye Kara ) 대한내과학회 2014 대한내과학회 추계학술대회 Vol.2014 No.1

Introduction: Hemolytic anemia, following mitral ring annuloplasty, is a rare entity. In this case hemolysis following mitral ring annuloplasty and iron defi ciency anemia caused by duodenal diverticulum will be presented. Case report: 55 years old women admitted to our Internal Medicine Department with the complaints of weakness, fatigue and dispnea. She had history of hypertension and coronary artery disease. Her complaints had been beginning two months after the mitral annuloplasty operation. Her physical examination revealed; subicterus, paleness of conjunctuvia and 3/6 systolic murmur on mitral region. In biochemical evolution; Hemoglobin 7. 2 mg/dl, Htc 25. 4%, total bilirubin 2. 7 mg/dl, direct bilirubin 0. 8 mg/ dl, LDH 1881 U/L. There wasn`t occult blood in the stool. Both LDH1 and LDH2 were increased. Hypochromia, microcytosis and anisocytosis was detected in the peripheral blood smear and reticulocyte value was 3. 1%. Serum iron level 28 mg/dl, iron binding capacity 357 mg/dl, ferritin 21. 4 mg/dl and haptoglobin level was 7. 2 mg/dl. Direct coombs test was detected +2. findings were supporting hemolytic anemia. Ejection fraction was calculated in normal range at transthoracic echocardiography. There was an annuloplasty ring at mitral level, third degree mitral regurgitation and left atrial dilatation. TEE was supporting the same fi ndings. Gastroduodenoscopy revealed; a large and deep diverticulum in postbulbar area and in the second part of duodenum. Since the patient did not accept coronary artery angiography and the operation, she was discharged. Conclusion: We decided that intravascular hemolysis was due to mitral valve annuloplasty. After this operation, hemolytic anemia is a rare condition. Because if a patient admits after valvular operation with anemia; we should keep in mind that it can be hemolytic anemia. The patient should be examined in terms of other types of anemia like iron defi ciency anemia.

Antimicrobial effect of PEG–PLA on food-spoilage microorganisms

Yasemin Sahan,Ozan Gurbuz,Gulsen Goncagul,Ali Kara,Cuneyt Ozakin 한국식품과학회 2017 Food Science and Biotechnology Vol.26 No.4

Polyethylene glycol (PEG) and polyethylene glycol–polylactic acid (PEG–PLA) have an organic structure and no negative effect on human health. The present study compares the antimicrobial effectiveness of PEG and PEG–PLA on microbial growth. The following pathogens and fungi were examined: seven bacteria strains and 10 fungi (four yeasts and six molds). PEG, a non-modified polymer, exhibited no inhibition effect on all test microorganisms. However, the antimicrobial effect increased with the concentration of PEG–PLA. Bacteria showed more sensitivity to PEG–PLA compared with the other microorganisms used in this study. Enterobacter ATCC 19434 was found to be the most resistant bacteria. Molds and yeasts were more resistant than bacteria against PEG–PLA. MIC and MFC could not be determined on the tested fungi owing to the level of concentrations used, with the exception of the yeast Candida albicans and the molds Penicillium expansum and Aspergillus parasiticus.