BACKGROUND: Analysis of retinal signaling in mutant mice has become a powerful tool for studying retinal function and disease. Previous attempts to record from isolated mouse retina have been limited to short time periods (about 90 min). It would be desirable to achieve longer-lasting recordings comparable to those that have been performed in larger vertebrates such as rat, rabbit, cat, and bovine (up to 10 h). We performed a series of recordings from isolated mouse retina under a number of different conditions in order to determine the optimal parameters for this species. METHODS: We used a superfused vertebrate retina assay, for which the murine retina had to be isolated with specific tools. Subsequently, the ERG recordings were optimized for nutrient solution, incubation temperature, and flash light intensity. RESULTS: To improve the sensitivity and stability of photoreceptor and retinal network responses from the isolated and superfused murine retina, two different nutrient solutions from rat (physiological Ca(2+)) and bovine (reduced Ca(2+) but increased phosphate buffering capacity) were used. Further, a temperature reduced to 27.5 degrees C, a light intensity ten-fold increased (63 mlux), and an increased flow rate (2 ml/min) provided conditions under which the b-wave response was stable for more than 3 hours. Well-known Ca(2+) channel antagonists (isradipine and NiCl(2)) were tested for their potency to antagonize transretinal signalling. CONCLUSION: In conclusion, the isolated murine retina can be used as a pharmacological testing system, which provides the additional advantage of selective gene inactivation for better understanding of retinal signalling.
BACKGROUND: Analysis of retinal signaling in mutant mice has become a powerful tool for studying retinal function and disease. Previous attempts to record from isolated mouse retina have been limited to short time periods (about 90 min). It would be desirable to achieve longer-lasting recordings comparable to those that have been performed in larger vertebrates such as rat, rabbit, cat, and bovine (up to 10 h). We performed a series of recordings from isolated mouse retina under a number of different conditions in order to determine the optimal parameters for this species. METHODS: We used a superfused vertebrate retina assay, for which the murine retina had to be isolated with specific tools. Subsequently, the ERG recordings were optimized for nutrient solution, incubation temperature, and flash light intensity. RESULTS: To improve the sensitivity and stability of photoreceptor and retinal network responses from the isolated and superfused murine retina, two different nutrient solutions from rat (physiological Ca(2+)) and bovine (reduced Ca(2+) but increased phosphate buffering capacity) were used. Further, a temperature reduced to 27.5 degrees C, a light intensity ten-fold increased (63 mlux), and an increased flow rate (2 ml/min) provided conditions under which the b-wave response was stable for more than 3 hours. Well-known Ca(2+) channel antagonists (isradipine and NiCl(2)) were tested for their potency to antagonize transretinal signalling. CONCLUSION: In conclusion, the isolated murine retina can be used as a pharmacological testing system, which provides the additional advantage of selective gene inactivation for better understanding of retinal signalling.
Authors: Mohammed Banat; Matthias Lüke; Siarhei A Siapich; Jürgen Hescheler; Marco Weiergräber; Toni Schneider Journal: Acta Ophthalmol Date: 2008-09 Impact factor: 3.761
Authors: Walid Albanna; Felix Neumaier; Jan Niklas Lüke; Konstantin Kotliar; Catharina Conzen; Ute Lindauer; Jürgen Hescheler; Hans Clusmann; Toni Schneider; Gerrit Alexander Schubert Journal: CNS Neurosci Ther Date: 2017-12-23 Impact factor: 5.243
Authors: Jan Niklas Lüke; Felix Neumaier; Serdar Alpdogan; Jürgen Hescheler; Toni Schneider; Walid Albanna; Isha Akhtar-Schäfer Journal: BMC Ophthalmol Date: 2020-05-06 Impact factor: 2.209