Influences of Chronic Smoking and Alcohol Consumption on Oxytocin- and Diltiazem-Induced Functional Responses of Pregnant Rat Myometrium

Amac: Gebelik sirasinda sigara ve alkol tuketimi dogum eylemi uzerinde istenmeyen etkilere neden olmaktadir. Altta yatan mekanizmalar hala tam olarak anlasilmamis olmakla birlikte, bozulmus miyometriyum fonksiyonel yanitlari bu komplikasyonlarin nedenlerinden biri olabilir. Bu calismada, kronik sigara ve alkol tuketiminin izole term-gebe sican miyometriyum seritlerinin fonksiyonel yanitlarina etkisini arastirdik. Yontem: 21 Wistar albino sicani uc gruba ayrildi: Kontrol; Sigara grubu, sicanlar 12 hafta boyunca sigara dumanina maruz kaldi; Alkol grubu, sicanlara 12 hafta boyunca etanol uygulandi (n = 7, her bir grupta). Dogum donemlerinde bulunan sicanlardan izole edilen miyometriyal duz kas seritleri, izometrik kayit almak uzere organ banyosuna yerlestirildi. Karbakol (10-8-10-4 M), oksitosin (10-9-10-3 M) ve diltiazem (10-8-10-4 M) kumulatif konsantrasyonlarinin miyometriyal spontan kasilmalar uzerindeki etkileri olculdu. Bulgular: Karbakol kasilma yanitlarinin amplitud ve frekanslari sigara grubunda anlamli olarak artarken, alkol grubunda azaldi. Oksitosin ile induklenen miyometriyal kasilmalarin frekansi sigara maruziyetiyle artarken, kasilmalarin amplitudu degismedi. Amplitud ve frekans olarak oksitosin kasilmalari alkol grubunda azaldi. Her iki grupta da diltiazem gevseme yanitlari arasinda kontrollerine gore anlamli olarak fark yoktu. Sonuc: Bu bulgular miyometriyal duz kasinin kasilma ve gevseme yanitlarini degistirmek yoluyla, sigara maruziyetinin erken doguma neden olabilecegini ve alkol maruziyetinin gebelik suresini uzatabilecegini gostermektedir. Diltiazem gebelikte her iki durumda da tokoliz icin yararli bir etkiye sahip olabilir.

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