The Effect of Ouabain on the Hydration of the Cornea.

نویسندگان

  • S I BROWN
  • B O HEDBYS
چکیده

The effect of ouabain on the hydration of the rabbit cornea has been studied. The glycoside was found to prevent the dehydration of the cornea during temperature reversal procedures and its application to the cornea in vivo results in significant corneal swelling. A comparison of the effect of ouabain on the cornea to the drug's effect on electrolyte transport systems in the tissues suggests that the cornea regulates its hydration by a transport of electrolytes, presumably across the endothelium.

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

The effect of ouabain on the rabbit corneal endothelium.

With the method of in vitro incubation of the isolated rabbit cornea with the modified KEI medium, the effects of ouabain applied to the endothelial surface have been investigated. The change in corneal hydration with varying concentrations of ouabain was determined; one-half maximum rate of corneal swelling was found at an ouabain concentration of 3 x 10~ moles per liter. Endothelial permeabil...

متن کامل

Effect of Sodium Valproate on Ouabain-Induced Arrhythmia in Isolated Guinea-Pig Atria

Sodium valproate (SV), an antiepileptic drug has several mechanism of action. It inhibits voltage sensitive Na+ channels and reduces intracellular Na accumulation. These actions are similar to that of both phenytoin and carbamazepine. We have investigated the direct cardiac action of SV and its effects on ouabain-induced arrhythmia in isolated guinea-pig atria. The guinea-pig atrium was dissect...

متن کامل

Effect of ouabain on submandibular salivary gland and level of zinc and copper in saliva and serum in rat

In this study, the effect of various doses of ouabain (1, 2, and 5 mg/kg, i.p.) on weight and flow rate of submandibular gland (SMG) and changes in zinc and copper levels in pure saliva and serum of rats was investigated. The time interval between injection of drug and sampling was 30 min. In addition, the effect of a single and toxic dose of ouabain (5 mg/kg, i.p.) in various time intervals (3...

متن کامل

O-13: Na+/K+-ATPase Alpha1 Isoform Mediates Ouabain-Induced Expression of Cyclin D1 and Proliferation of Rat Sertoli Cells

Background: Novel roles for the interaction of cardiotonic steroids to Na+/K+-ATPase have been established in recent years. The aim of the present study was to investigate the intracellular signaling events downstream the action of ouabain on Na+/K+-ATPase in Sertoli cell obtained from immature rats. Treatment of Sertoli cells with ouabain (1 μM) induced a rapid and transient increase in the ex...

متن کامل

Localization of Transport Adenosine Triphosphatase in Rat Cornea

Increasingly, physiological and biochemical data on the mammalian cornea have emphasized the importance of the endothelial rather than the epithelial layer in regulating the state of hydration of the cornea, via a transport ATPase. This view is supported by the observations reported here. With the Ernst method, the first cytochemical procedure to be readily responsive to ions and ouabain, the m...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:
  • Investigative ophthalmology

دوره 4  شماره 

صفحات  -

تاریخ انتشار 1965