Diş hekimliği fakültelerinde kullanılan farklı diş ünitlerinin su ünitlerinin su sistemlerinin geri akım kontaminasyonu açısından değerlendirilmesi

Amaç: Farklı diş koltuk sistemlerine bağlı gerikaçış engelleyici sistemlerin etkinliğinin uzun dönem araştırılması ve farklı branşlara göre gerikaçış sonucu ortaya çıkabilecek çapraz enfeksiyon riskinin belirlenmesidir. Gereç ve Yöntemler: Dişhekimliğinin birbirinden farklı üç branşından çalışma grubu oluşturulmuştur. Bu farklı üç gruptan elde edilen materyaller bakteri varlığı açısından değerlendirilerek gruplar arasındaki farklılık mikrobiyolojik açıdan incelenmiştir. Bulgular: Üç grupta da birçok bakteri kolonisinin izole edildiği görülmekle birlikte üreyen mikroorganizmaların çoğunun çevreden ve ağız florasından sıklıkla izole edilen bakteri kolonileri olduğu görülmüştür. Sonuç: Diş ünit sistemlerinin kontaminasyonu engelleyici sistemlerle donatılmasının son derece önemli olduğu görülmüş, bununla birlikte uzun zamandır kullanılan diş ünit sistemlerinin sıklıkla kontrol edilmesi ve gerektiğinde yenilenmesi sonucuna ulaşılmıştır

Evaluation of spermatological data in Linda breed geese raised in Kars region between april and june

Sunulan çalışmada Kars ilinde yetiştiriciliği gerçekleştirilen Linda ırkı kazlarda Nisan ve Haziran ayları arasında sezona bağlı spermatolojik değişimler izlenmiştir. Ülkemizde yoğun olarak Kars, Ardahan ve Muş illerinde yetiştiriciliği gerçekleştirilen kazların; genellikle etinden, tüyünden ve karaciğer gibi yan ürünlerinden faydalanılmaktadır. Kaz yetiştiriciliği karlı ve avantajlı olmasına rağmen, kazların sezona bağlı üreme faaliyetlerinde görülen düşüşler ise yetiştiriciliği kısıtlamaktadır. Etkin bir şekilde yardımcı üreme tekniklerinden faydalanılabilmek için, öncelikle mevsimin üreme üzerine etkilerinin incelenmesi gerekmektedir. Bu amaçla çalışmamızda üç yaşında beş kaz sperma alınması için materyal olarak kullanıldı. Kazlardan sperma, haftada iki kez olmak üzere dorso-abdominal masaj yöntemiyle alındı. Alınan taze sperma motilite yönünden incelendi. Taze sperma örneklerinin aylara göre ortalama motilite değerleri sırasıyla 16.1±5.48, 1.09±0.99, 0.0±0.0 olarak bulundu. Motilite değerlerinin Nisan ayından sonra aniden düştüğü görüldü (P0.05). Sonuç olarak Kars bölgesinde yetiştiriciliği yapılan Linda ırkı kazlarda, Nisan ayı itibariyle spermatolojik verilerin kalitesinde bir düşüş olduğu ve üreme döneminin gerilemeye girdiği tespit edildi. Kaz yetiştiriciliğinin hem bölgesel önemi hem de ihracat ürünü potansiyeli düşünüldüğünde, bu konu üzerinde daha derin çalışmalar gerçekleştirmesi gerekliliği ciddiyetle değerlendirilmelidir.In the present study, seasonal spermatological changes were observed in Linda breed gander bred in Kars province between April and June. Of the geese, which are intensively bred in Kars, Ardahan and Muş provinces in Türkiye; Generally, meat, feathers and by-products such as liver are used. Although goose breeding is profitable and advantageous, decreases in seasonal breeding activities of geese restrict breeding. In order to benefit from assisted reproductive techniques effectively, first of all, the effects of the season on reproduction should be examined. For this purpose, in our study, five three-year-old ganders were used as material for semen collection. The semen from the gander was collected by dorso-abdominal massage method twice a week. Fresh semen taken were examined for motility. The mean motility values of fresh semen samples by months were found to be 16.1±5.48, 1.09±0.99 and 0.0±0.0, respectively. It was observed that the motility values suddenly decreased after April (P0.05). As a result, it was determined that there was a decrease in the quality of spermatological data in Linda breed geese bred in the Kars region as of April, and the reproductive period began to decline. Considering both the regional importance and export product potential of goose breeding, the necessity of carrying out more in-depth studies on this issue should be seriously evaluated

COVID-19 in pediatric nephrology centers in Turkey

Background/aim: There is limited data on COVID-19 disease in children with kidney disease. We aimed to investigate the characteristics and prognosis of COVID-19 in pediatric nephrology patients in Turkey. Materials and methods: This was a national, multicenter, retrospective cohort study based on an online survey evaluating the data between 11th March 2020 and 11th March 2021 as an initial step of a detailed pediatric nephrology COVID-19 registry. Results: Two hundred and three patients (89 girls and 114 boys) were diagnosed with COVID-19. One-third of these patients (36.9%) were between 10–15 years old. Half of the patients were on kidney replacement therapy: kidney transplant (KTx) recipients (n = 56, 27.5%), patients receiving chronic hemodialysis (n = 33, 16.3%) and those on peritoneal dialysis (PD) (n = 18, 8.9%). Fifty-four (26.6%) children were asymptomatic. Eighty-two (40.3%) patients were hospitalized and 23 (28%) needed intensive care unit admission. Fifty-five percent of the patients were not treated, while the remaining was given favipiravir (20.7%), steroid (16.3%), and hydroxychloroquine (11.3%). Acute kidney injury developed in 19.5% of hospitalized patients. Five (2.4%) had MIS-C. Eighty-three percent of the patients were discharged without any apparent sequelae, while 7 (3.4%) died. One hundred and eight health care staff were infected during the study period. Conclusion: COVID-19 was most commonly seen in patients who underwent KTx and received HD. The combined immunosuppressive therapy and frequent exposure to the hospital setting may increase these patients’ susceptibility. Staff infections before vaccination era were alarming, various precautions should be taken for infection control, particularly optimal vaccination coverage

Devamlı akım ile çalışan sol vertikül destek cihazı takılan hastalarda intravasküler hemoliz insidansı ve klinik sonuçlarının retrospektif incelenmesi

Amaç: Bu çalışmada amaç, ventrikül destek cihazı takılan olgularda intravasküler hemoliz seviyesinin erken ve orta dönem komplikasyonlara ilişkisinin araştırılmasıdır. Gereç ve yöntem: Ocak 2014- Nisan 2015 tarihleri arasında kliniğimizde son dönem kalp yetmezliği nedeniyle 100 hastaya Sol Ventrikül Destek Cihazı(LVAD) implante edilmiştir. Çeşitli nedenlerle (ölüm, kalp nakli, dış merkez takipleri) laboratuar takibi yapılamadığı için çalışmadan çıkarılmıştır. Çalışmaya toplam 59 hasta (ortalama yaş 51,5 ± 11 ve 53'ü erkek) dâhil edildi. Bu hastaların 42 tanesine HeartWare ve 17'sine HeartmateII implante edildi. Hastaların preop, postop erken, 3. Ay, 6. Ay ve 12.ay hemoliz bulguları (klinik ve laboratuar) kaydedildi. Çalışmamızda İntravasküler Hemolizin laboratuvar testlerinden Laktat Dehidrogenaz Enzimi, Total/Direkt Bilirubin ve İNR değerleri preoperatif dönem, postoperatif dönem, 3. Ay, 6. Ay, 1. Yıl olarak retrospektif olarak taranmış, Bulgular: n % IKMP 24 % 40.7 DKMP 35 % 59.1 REDO 8 % 13.6 HT 20 % 33.9 DM 16 % 27.1 Preop AF 15 % 25.4 HL 6 % 10.2 KAS 0 % 0 PAH 0 %0 ICD 22 % 37.3 CRT 4 % 6.8 KPM 1 % 1.7 CPR 1 % 1.7 Preop GİS kanama 0 % 0 İntermacs I II III IV V 2 19 23 14 1 % 3.4 %32.2 %39.0 %23.7 %1.7 IABP 1 %1.7 Torakotomi 6 % 6 Sternotomi 51 % 86. Minimal invaziv 3 % 5.1 Heartware 42 % 86.4 Heartmate II 17 % 28.8 CPB 56 %94.9 Triküspit Tamir/ TVA 5 % 8.5 Aort Tamir 4 % 6.8 AVR (bioprotez) 3 % 5.1 Revizyon 3 % 5.1 toplam 59 hasta üzerinden sadece (10/22) hastanın izleminde Pompa trombozu şüphesi , (12/22) hastada hem tromboz ve Serebrovasküler Hemoraji/ Enfarktla karşılaşılmıştır. Preop dönemde total bilirubin değerleri postop erken döndemde bir miktar yükselmesine rağmen 3.ay, 6.ay, ve 1.yıl takiplerinde dönemde normal sınırlara gerilemiştir. Postop LDH değeri preop dönem göre anlamlı (p ˂ 0.05) artış göstermiştir. Postop 3.ay, postop 6.ay, postop 1.yıl LDH değeri preop dönem göre anlamlı (p ˃ 0.05) değişim göstermemiştir. 3.ay LDH değeri postop döneme göre anlamlı (p ˂ 0.05) düşüş göstermiştir. 6.ay LDH değeri 3.aya göre anlamlı (p ˃ 0.05) değişim göstermemiştir. 1.yıl LDH değeri 6.aya göre anlamlı (p ˃ 0.05) değişim göstermemiştir. Sonuç: Çalışma analizleri neticesinde, klink takipteki intravasküler hemoliz belirteçlerinin, oluşacak trombotik komplikasyonları öngörmede faydalı olmadığı görülmüştür

Debate on skeletal elements of the Triassic conodont Cornudina Hirschmann

The long-ranging Early to Middle Triassic coniform conodont form-genus Cornudina Hirschmann occurs abundantly in the Anisian of NW Turkey, Northern Tethys. Although suggested to represent the P1 element of an apparatus of the Order Ozarkodinida Dzik, questions concerning the apparatus of Cornudina remain. A description of the probable phylogenetic trends in the P1 elements of Cornudina is attempted and the role of the form-genera Ketinella Gedik and Kamuellerella Gedik, as the alternative ramiform skeletal elements in the Cornudina multi-element apparatus, is investigated. The newly described, Gedikella quadrata gen. nov., sp. nov., is an S element, Kamuellerella rectangularis sp. nov., is either an S3 or an S4 element, and Ketinella goermueshi sp. nov., is an M element

Determination of The Gross Alpha and The Gross Beta Radioactivity Concentration on Spring Waters in Bitlis

Temas halinde oldukları kayalardan, radyoaktif izotopları çözmeleri sonucunda; kaynak ve yeraltı suları radyoaktif özellikler kazanırlar. Toprak ve kayalarda bulunan doğal radyonüklitlerin, su ile etkileşmeleri ile suya geçiş ihtimalleri oldukça artar. Bu nedenle, çevremizde bulanan suların radyoaktif analizinin yapılması gereklidir. Bu çalışmada, Bitlis ve ilçelerindeki bazı kaynak sularının toplam alfa ve toplam beta radyoaktivite seviyeleri Krieger metodu kullanılarak belirlendi. Su örneklerinin toplam alfa radyoaktivite seviyelerinin 0,068 ± 0,048 Bq/l ile 1,153 ± 0,263 Bq/l değerleri arasında, toplam beta radyoaktivite seviyelerinin ise 0,075 ± 0,066 Bq/l ile 5,907 ± 0,551 Bq/l değerleri arasında değiştiği görüldü. Sonuçlar, bölgenin jeolojik özellikleri göz önünde bulundurularak değerlendirildi.Spring and ground waters gain radioactive properties due to the solving of radioactive isotopes from the rocks that waters being in touch with. As a result of interaction with water, the probability of transfer of natural radionuclides found in soils and rocks to the water increases in considerable amount. Therefore, it is necessary to perform radioactive analyses of waters that in our environment. In this study, the gross alpha and the gross beta radioactivity levels of some spring waters in Bitlis and districts were determined by using the Krieger method. It is seen that the total alpha radioactivity levels of water samples varied between 0.068 ± 0.048 Bq/l and 1.153 ± 0.263 Bq/l, also the total beta radioactivity levels varied between 0.075 ± 0.066 Bq/l and 5.907 ± 0.551 Bq/l. Results were evaluated considering the geological properties of the region

A benign entity – cerebral multinodular and vacuolating neuronal tumor

Introduction and aim. Multinodular and vacuolating neuronal tumor (MVNT) of the cerebrum is a rare benign, mixed glial/ neuronal lesion which has been included in the recent (2016) World Health Organization (WHO) Classification of the central nervous system tumors.Most of the reported cases are remarkable with adult onset seizure in the literature.They can also be found incidentally in nonepilepsy patients with or without headache We aimed to present this unique entity with its typical magnetic resonance imaging (MRI) features. Description of the case. A 21-year old man presented with complaint of headache that increased in frequency within the last few months.No relevant seizure or any other signs of note.He was diagnosed with MVNT by imaging andstarted to be followed-up.The repeat MRI 6 months later showed no interval changes. Conclusion. Clinicians should be aware of that it is a do not touch lesion in asymptomatic patients with no need for biopsy or surgery and follow up imaging is sufficient when presented with the typical MRI manifestations. Surgical resection may be required for seizure control and was reported in few cases with no tumoral regrowth in the literature

Seawater carbonate chemistry and 109Cd, 57Co, and 134Cs bioconcentration by the European oyster (Ostrea edulis)

The uptake and depuration kinetics of dissolved 109Cd, 57Co and 134Cs were determined experimentally in the European flat oyster Ostrea edulis (Linnaeus, 1758) under different pH conditions (i.e., 8.1, 7.8 and 7.5) for 59 days. Uptake and depuration rates were variable within these elements; no effects were observed under different pH conditions for the uptake biokinetics of 109Cd and 57Co and depuration of 109Cd and 134Cs in oyster. The uptake and depuration rate constants of 134Cs differed during the exposure phase between treatments, while the steady state concentration factors (CFss) were similar. The resulting Cs activity that was purged during short- and long-term depuration phases differed, while the remaining activities after thirty-nine days depuration phase (RA39d) were similar. Co-57 depuration was affected by pCO2 conditions: RA39d were found to be significantly higher in oysters reared in normocapnia (pCO2 = 350 μatm) compared to high pCO2 conditions. Co-57 tissue distribution did not differ among the variable pCO2 conditions, while 109Cd and 134Cs accumulated in soft tissue of oysters were found to be higher under the highest pCO2. Additionally, Cd, Co and Cs were stored differently in various compartments of the oyster cells, i.e. cellular debris, metal-rich granules (MRG) and metallothionein-like proteins (MTLP), respectively. The subcellular sequestration of the elements at the end of the depuration phase did not differ among pH treatments. These results suggest that bioconcentration and tissue/subcellular distribution are element-specific in the oyster, and the effects of higher pCO2 driven acidification and/or coastal acidification variably influence these processes

Relation between platelet indices and branch retinal vein occlusion in hypertensive patients

WOS: 000320060900003PubMed: 23619481Backgroud: Branch retinal vein occlusion (BRVO) is the second most common retinal vascular disease after diabetic retinopathy. To date, the studies were unable to elucidate the mechanism of the thrombosis leading to the entity; particularly the relation between thrombocyte aggregation and retinal vein occlusion is still unclear. Mean platelet volume (MPV) is a determinant of rate of platelet production and activation, both of which are indices of function of platelets. The relation between MPV and BRVO has not been studied before. The aim was to evaluate MPV in BRVO. Materials and Methods: Forty patients were included in the study. Forty six age and sex matched hypertensive volunteers were recruited as the control group. Results: MPV values were significantly higher in BRVO patients compared with the control subjects (8.01 +/- 0.79vs 7.52 +/- 0.32fL, respectively; P < 0.001). Conclusion: MPV is significantly higher in patients hypertensive BRVO patients and further investigations regarding its potentially use as a prognostic biomarker in patients with BRVO are needed