Yıl: 2015 Cilt: 21 Sayı: 1 Sayfa Aralığı: 61 - 67 Metin Dili: Türkçe İndeks Tarihi: 29-07-2022

Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa

Öz:
Bu çalışmada koç spermasının 26°Cden +5°Cye indirilmesinde farklı soğutma hızlarının (0.3°C/dk., 0.6°C/dk. ve 0.9°C/dk.) eritme sonrasıspermatolojik özellikler ve spermatozoonların ultrastrüktürel yapısı üzerindeki etkilerinin incelenmesi amaçlanmıştır. Altı adet koçtan elektroejakülatörle alınan spermalar 26°Cdaki su banyosunda pooling işlemine tabii tutuldu. Tris bazlı sulandırıcıyla sulandırılan birleştirilmiş sperma üç eşithacme bölünerek 3 farklı hızda (0.3, 0.6 ve 0.9°C/dk.) +5°C ye soğutuldu. Sperma iki basamakta sulandırıldı, gliserol sperma ısısının +5°Cye indiğiikinci basamakta katıldı. Sulandırma sonrası sperma 1 saat ekilibre edildi daha sonrasında 0.25 ml payetlere çekilerek sıvı azot buharında donduruldu.Sperma pooling, sulandırma, soğutma, ekilibrasyon ve eritme sonrası gibi tüm aşamalarında motilite değerleri Bilgisayar Destekli Analiz Sistemleri(CASA) ile değerlendirildi. Pooling ve soğutma sonrasında elektron mikroskop incelemeleri gerçekleştirildi. 0.3°C/dk. soğutma grubunun, spermanın+5°Cye soğutma, ekilibrasyon ve eritme sonrasındaki hem total motilite hem de progressive motilite değerleri 0.9°C/dk. soğutma grubuna göre önemliderecede yüksek bulundu (P<0.05). Bu grup 0.6°C/dk soğutma hızı ile karşılaştırıldığında ise, 0.3°C/dk. soğutma grubunun soğutma ve ekilibrasyonsonrasındaki total motilite değerleri yüksek bulundu ancak eritme sonrası gruplar arasında fark bulunmadı (P>0.05). Soğutma ve eritme sonrasında iseprogressive motilite değerleri daha yüksek bulunurken(P<0.05), ekilibrasyon aşamasında progresif motilite değerleri arasında fark bulunmadı(P>0.05).Yapılan TEM incelemesinde, tüm soğutma hızı gruplarında eritme sonrasında tespit edilen toplam hasarlı spermatozoit oranı, pooling sonrasına göreönemli derecede yüksek bulunmuştur (P<0.05). Sonuç olarak koç spermasının dondurulması öncesinde +5°Cye soğutulmasında 0.3°C/dk.nın üzerindesoğutma hızlarının kullanılmasının sperma kalitesini olumsuz etkilediği ve soğutma hızı 0.6 ve 0.9°C/dk.ya arttırıldıkça eritme sonrası total ve progresifmotilitenin artan oranlarda etkilendiği sonucu çıkarılmıştır. Ayrıca, koç spermasında düşük sıcaklara bağlı olarak oluşan ultra strüktürel hasarların ilksulandırma aşamasından itibaren başladığı ve ultra strüktürel hasarların, spermanın gördüğü işleme ve soğutma hızlarına göre başın farklı bölgelerindelokalize olma eğiliminde olduğu sonucu çıkarılmıştır.
Anahtar Kelime:

Konular: Veterinerlik

Koç spermasının dondurulmasında kullanılan soğutma oranlarının membran bütünlüğü ve motilite özelliklerine etkisi

Öz:
In this study we aimed to determinate the efects of three diferent cooling rates from +26°C to +5°C at (0.3°C/min 0.6°C/min and 0.9°C/min) onspermatologic and ultrastructure properties of ram semen. For this purpose semen from 6 rams was collected by electroejaculator and was pooled in a+26°C waterbath. Pooled semen was diluated with tris based extender and divided into three equal parts according cooling rates (0.3°C/min., 0.6°C/min.and 0.9°C/min). Cooled semen was reextended with extender B +5°C in the second step. Diluated samples were equilibrated for 1 h and then were loadedin 0.25 mL straws and freezed in liquid nitrogen vapor. After each freezing stage semen was evaluated motility with computer-assisted semen analysis(CASA). Electron microscobic evaluation was done for pooled and chilled samples. It has been observed that 0.3°C/min. cooled group had meaningfullyhigher values of motility and progressive motility at +5°C after equilibration and post-thaw stages when compared with the 0.9°C/min. group (P<0.05).When compared to the 0.6°C/min., the 0.3°C/min. cooled group had higher total motility values at after cooling to +5°C (P<0.05), equilibration (P<0.05)and post thaw stages (P>0.05) and had higher progressive motility at after cooling to +5°C (P<0.05), equilibration (P>0.05) and post-thaw stage (P<0.05).The TEM evaluation showed that at cooling to the +5°C increases the total damaged spermatozoa in all groups (P<0.05). In conclusion, cooling the ramsemen to +5°C with a rate above 0.3°C/min. afected negatively the spermatological characteristics. Reaching the cooling rates of 0.6 and 0.9°C/min.increasingly deteriorated the post-thaw motility and progressive motility values. Also, low temperature related to ultrastructural damage was observedat the first dilution step and localized at diferent regions of the sperm head depends upon the processes and cooling rates.
Anahtar Kelime:

Konular: Veterinerlik
Belge Türü: Makale Makale Türü: Araştırma Makalesi Erişim Türü: Erişime Açık
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APA Demir K, ÖZTÜRK BAKIRER G, CİRİT Ü, BOZKURT H, AKTAS A, BİRLER S, AK K, PABUCCUOGLU S (2015). Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. , 61 - 67.
Chicago Demir Kamber,ÖZTÜRK BAKIRER Gül,CİRİT Ümit,BOZKURT H. Hakan,AKTAS ABİT,BİRLER Sema,AK Kemal,PABUCCUOGLU SERHAT Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. (2015): 61 - 67.
MLA Demir Kamber,ÖZTÜRK BAKIRER Gül,CİRİT Ümit,BOZKURT H. Hakan,AKTAS ABİT,BİRLER Sema,AK Kemal,PABUCCUOGLU SERHAT Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. , 2015, ss.61 - 67.
AMA Demir K,ÖZTÜRK BAKIRER G,CİRİT Ü,BOZKURT H,AKTAS A,BİRLER S,AK K,PABUCCUOGLU S Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. . 2015; 61 - 67.
Vancouver Demir K,ÖZTÜRK BAKIRER G,CİRİT Ü,BOZKURT H,AKTAS A,BİRLER S,AK K,PABUCCUOGLU S Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. . 2015; 61 - 67.
IEEE Demir K,ÖZTÜRK BAKIRER G,CİRİT Ü,BOZKURT H,AKTAS A,BİRLER S,AK K,PABUCCUOGLU S "Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa." , ss.61 - 67, 2015.
ISNAD Demir, Kamber vd. "Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa". (2015), 61-67.
APA Demir K, ÖZTÜRK BAKIRER G, CİRİT Ü, BOZKURT H, AKTAS A, BİRLER S, AK K, PABUCCUOGLU S (2015). Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. Kafkas Üniversitesi Veteriner Fakültesi Dergisi, 21(1), 61 - 67.
Chicago Demir Kamber,ÖZTÜRK BAKIRER Gül,CİRİT Ümit,BOZKURT H. Hakan,AKTAS ABİT,BİRLER Sema,AK Kemal,PABUCCUOGLU SERHAT Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. Kafkas Üniversitesi Veteriner Fakültesi Dergisi 21, no.1 (2015): 61 - 67.
MLA Demir Kamber,ÖZTÜRK BAKIRER Gül,CİRİT Ümit,BOZKURT H. Hakan,AKTAS ABİT,BİRLER Sema,AK Kemal,PABUCCUOGLU SERHAT Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. Kafkas Üniversitesi Veteriner Fakültesi Dergisi, vol.21, no.1, 2015, ss.61 - 67.
AMA Demir K,ÖZTÜRK BAKIRER G,CİRİT Ü,BOZKURT H,AKTAS A,BİRLER S,AK K,PABUCCUOGLU S Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. Kafkas Üniversitesi Veteriner Fakültesi Dergisi. 2015; 21(1): 61 - 67.
Vancouver Demir K,ÖZTÜRK BAKIRER G,CİRİT Ü,BOZKURT H,AKTAS A,BİRLER S,AK K,PABUCCUOGLU S Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa. Kafkas Üniversitesi Veteriner Fakültesi Dergisi. 2015; 21(1): 61 - 67.
IEEE Demir K,ÖZTÜRK BAKIRER G,CİRİT Ü,BOZKURT H,AKTAS A,BİRLER S,AK K,PABUCCUOGLU S "Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa." Kafkas Üniversitesi Veteriner Fakültesi Dergisi, 21, ss.61 - 67, 2015.
ISNAD Demir, Kamber vd. "Effects of cooling rate on membrane integrity and motility parameters of cryopreserved ram spermatozoa". Kafkas Üniversitesi Veteriner Fakültesi Dergisi 21/1 (2015), 61-67.