... and liquid vitreous were weighed, and the percent of vitreous liquefaction was calculated. Cu 2+ injection resulted in liquefaction of 58% of the vitreous, although control eyes had 12% liquefaction (p < 0.01). The vitreous liquefaction was more pronounced in the presence of exogenous ascorbic acid...

...Constance S. Tsao; Li-Fen Xu; May Young The effect of large intake of dietary ascorbic acid on heat-induced eye lens protein damage has been studied. Male guinea pigs of the Hartley strain were used. Ascorbic acid was administered to the experimental animals in the drinking water. The mean daily...

...Lucia L. Manzanas; Carlos Pastor; Raquel Munoz; Tomas Girbes Vitrectomy and the subsequent vitreous fluid exchange alter the chemical and physical properties of the vitreous. This study assessed the time course alterations of total protein, ascorbic acid and lactic acid in the rabbit vitreous...

...Debnath Chattopadhyay; Jun Akiba; Norio Ueno; Bireswar Chakrabartia The effect of Fe 2+ and Cu 2+ on the intact calf vitreous in the presence or absence of exogenous ascorbic acid was investigated in vitro. Liquefaction of vitreous gel was evident in the presence of either ion. The loss of gel...

...L. Welge-Lüssen; K.P. Schimmel The ascorbic acid concentration in the vitreous of rabbits was experimentally increased to about 20 times the normal value. After 1 day the concentrations of the free amino acids were conspicuously subnormal; the concentrations rose after 2–4 days and reached normal...

... perfusion with 125 I-RISA or rabbit serum showed that the permeability characteristics of the blood-aqueous barrier to protein molecules are unaffected in the enucleated eye. The viability of the enucleated eye for secretion of ascorbic acid was also examined, but the results were inconclusive. Arterial...

... to in the content or advertisements. Superoxide Superoxide dismutase Catalase H 2 O 2 Lens Cataract Ascorbic acid Ophthalmie Res. 14: 167-175 (1982) Photoperoxidation in Lens and Cataract Formation: Preventive Role of Superoxide Dismutase, Catalase and Vitamin C Shambhu D. Varma, V. K. Srivastava, R...

...; group C: 4.068 ± 0.538 μmol/lens). Also ascorbic acid levels showed a significant decrease both in lens and in aqueous humor. No differences were noted in the reduced glutathione content in aqueous humor. The fall in nonprotein and protein –SH could be the first event in the well-known biochemical...

...M. Reim; M. Seidl; K. Brucker In the aqueous humour and the corneal epithelium of rabbits, the ascorbic acid levels were investigated using the photometric assay with 2,6-dichlorophenolindophenol. After injection of 300 mg/kg body weight of ascorbate, the aqueous humour ascorbic acid levels were...

...Kaili Wu; Masami Kojima; Ying Bo Shui; Hiroshi Sasaki; Kazuyuki Sasaki To evaluate ocular morphological response to ultraviolet B (UV-B) exposure in guinea pigs fed with normal and low-ascorbic acid (ASA) diets, 24 guinea pigs were randomly divided into UVR (normal diet + UV-B), LVC (low-ASA diet...

...Carl Erb; Kerstin Nau-Staudt; Josef Flammer; Werner Nau Aim: To study the antioxidant activity, UV absorption, concentration and stability of ascorbic acid (AA) in porcine and bovine aqueous humour (AH). Methods: Porcine and bovine AH was taken within 5 min after death and frozen at –70°C...