Gene/Protein Disease Symptom Drug Enzyme Compound
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Query: UMLS:C0086543 (cataract)
 29,165 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Bleomycin was administered to 126 normal or human-tumor-bearing baby rats we observed for the development of cataracts. Eighty-four percent of the rats receiving this drug before the age of 10 days developed lens opacities. Bleomycin given to 10-day-old rats or older did not induce cataract formation. The cataracts initially occurred in the nuclear area and later involved most of the lens whether or not bleomycin was later discontinued. The presence of the tunica vasculosa lentis in rats younger than 10 days old may explain why cataracts developed only in these young animals.
Am J Ophthalmol 1975 Sep
PMID:Cataracts in bleomycin-treated rats. 5 90

Cardiac rhythm was monitored in 219 patients who had ocular operations under general anaesthesia and in 15 patients who had cataract surgery under local analgesia. Of these, 140 were children having squint surgery. The high incidence of the oculo-cardiac reflex and the adequate protective effect of atropine 0-01 mg/kg given intravenously was confirmed. Isolated extrasystoles were common, particularly in older patients, and sustained ectopic cardiac arrhythmias were observed in 4-6 per cent of patients of all ages. The significance of these arrhythmias in relation to surgical stimulation and the anaesthetic drugs used is discussed.
Br J Ophthalmol 1975 Sep
PMID:Reflex disturbances of cardiac rhythm during ophthalmic surgery. 5 91

The clinical and pathological details of a case of reno-facial dysplasia are presented and described. Hyperplasia and lamination of Bowman's membrane, corneal endothelial dystrophy with degenerative changes in the posterior stroma, hypoplasia of the retinal ganglion cell and nerve fibre layers, and severe changes in the retinal and iris blood vessels are believed to be pathognomonic ocular features of this syndrome, in addition to cataract and signs of immaturity. These findings are compared with the few descriptions of the syndrome previously published. The corneal damage is postulated to result indirectly from oligohydramnios which causes chronic compression of the globes and thus endothelial damage due to contact with the spherical cataracts. The pathological changes in the retinal and iris vessels are either genetically determined or the result of chronic hypoxia.
Klin Monbl Augenheilkd 1978 Sep
PMID:[Ocular findings in reno-facial dysplasia (Potter-syndrome) (author's transl)]. 10 56

Immediately after cataract extraction, lenses from diabetic and nondiabetic patients were collected, classified, and assayed or incubated in high-glucose medium. The distribution of cataract types within the diabetic and nondiabetic groups was almost identical. The aldose reductase (AR) inhibitor AY22,284 (Alrestatin) was as effective in blocking sorbitol formation in diabetic as in nondiabetic lenses. While there was no difference in the level of intralenticular glucose, the diabetic lens produced significantly more sorbitol than did the nondiabetic lens. Also, the activity of polyol dehydrogenase (PD) was much lower in the diabetic population. The diabetic lenses swelled slightly more (P <.2) than nondiabetic lenses in high glucose media, and AY22,284 was effective in reducing the swelling of diabetic lenses in 35.5 mM glucose medium. While these results are preliminary, they suggest that diabetes, in some way, may confer on the human lens an increased susceptibility to osmotic stress via the sorbitol pathway. It is also reassuring to note that an AR inhibitor is no less effective in blocking the more active AR in the diabetic than in the nondiabetic lens. The therapeutic implications of this are discussed.
Ophthalmology 1979 Sep
PMID:Efficacy of Alrestatin, an aldose reductase inhibitor, in human diabetic and nondiabetic lenses. 12 68

1. Cataract formation in streptozotocin-induced diabetes in rats was reduced by approximately 85% when a diet rich in maize oil (300 g/kg diet) (fat diet) was given, thus confirming results of earlier studies. However, the concentration of sorbitol in the lens of diabetic animals remained high, the values for diabetic rats given the standard diet and the fat died being 65 and 40 mumol/g protein respectively. 2. With the standard diet, the fatty acid profile of the triglycerides of the epididymal fat pads was characterized by a greater relative proportion of saturated fatty acids for the diabetic animals compared to that for the normal animals. The fat diet moderated the tendency towards saturation in the diabetic animals. 3. The fat diet had other effects on the diabetic animals; these included a reduced mortality rate, increased body-weight, a decrease in the daily water intake, and in the daily urinary excretion of glucose and urea. 4. In the diabetic animals the fat diet had no effect on the specific activities in the liver of hexokinase (EC 2.7.1.1), glucokinase (EC 2.7.1.2), phosphofructokinase (EC 2.7.1.11) and pyruvate kinase (EC 2.7.1.40). However, the specific activity of glucose-6-phosphatase (EC 3.1.3.9) was reduced, while that of malate dehydrogenase (decarboxylating) (NADP) (EC 1.1.1.40) was increased. The NAD+:NADH ratio, as calculated from liver pyruvate and lactate concentrations, tended to increase. 5. The results suggested that the fat diet moderated the long-term metabolic effects of diabetes.
Br J Nutr 1976 Sep
PMID:The effect of an unsaturated-fat diet on cataract formation in streptozotocin-induced diabetic rats. 13 11

A mongoloid woman had a nevus of Ota, an ipsilateral congenital cataract, and upper extremity hemiatrophy. To our knowledge, no similar patient has been previously reported. We review the literature concerning the nevus of Ota and cataracts in mongoloid indivuduals.
Arch Dermatol 1976 Sep
PMID:Nevus of Ota with ipsilateral congenital cataract. 13 26

Twenty-five patients were examined for ocular complaints following renal transplantation. Besides the expected complications of posterior subcapsular cataract and cytomegalovirus retinitis, other findings-such as focal depigmentation of the retinal pigment epithelium, a lack of hypertensive retinopathy, elevated intraocular tensions, microaneurysms, preretinal wrinkling, serous detachments of the retina, hemorrhages and exudates-were observed.A laboratory clue to the onset of cytomegalovirus retinitis was a rapid rise in cytomegalovirus (CMV) antibody titer and a positive CMV plaque count in tissue culture.
West J Med 1975 Sep
PMID:Ocular complications in renal transplant recipients. 16 34

A new type of hereditary cataract was predicted in the deer mouse (Peromyscus maniculatus) by the presence of syndactyly of the hind feet. Early morphologic changes were found in the equatorial cells that differentiated into new lens fibers. Later swelling at the anterior and posterior poles of these cells produced lens opacities. Anterior and posterior subcapsular cataracts progressed to a hypermature shrunken lens.
Am J Ophthalmol 1975 Sep
PMID:Hereditary cataracts in deer mice (Peromyscus maniculatus). 16 95

Cataractous and noncataractous human lenses were irradiated with ultraviolet (UV) light, and the resulting triplet and radical species were studied by electron paramagnetic resonance spectroscopy. Evidence is presented that free radicals are produced by a biphotonic process involving tryptophan as an intermediate triplet. This makes free radical production energetically feasible. A possible link between incident UV light and cataract formation is suggested.
Invest Ophthalmol Vis Sci 1978 Sep
PMID:Free radicals produced in human lenses by a biphotonic process. 21 85

A 9 month-old boy developed secondary open-angle glaucoma associated with fever and multiple lytic bone lesions 2 1/2 months after cataract aspiration. An open bone biopsy provided a diagnosis of histiocytosis X. Hisiocytes similar to those in the bone were identified in a specimen of aqueous humor from the affected eye. No other cells were found. The abnormal histiocytes may have caused the glaucoma by infiltrating the trabecular angle structures and mechanically obstructing aqueous outflow from the eye.
Am J Ophthalmol 1977 Sep
PMID:Secondary open-angle glaucoma in histiocytosis X. 30 48


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