Experimental cataracts in rats due to tryptophan-free diet. 1978

C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin

A tryptophan-free diet induces posterior subcapsular cataracts and reversible corneal opacities in young Wistar rats. Compared to the controls there is a significant decrease of body weight, lens fresh weight, and water-soluble lens protein. Protein separation by isoelectric focusing shows diminished alpha-, beta-, and gamma-crystallin fractions. If tryptophan is restored to the diet after 24 days, new clear lens fibers are laid down again, indicating that the mechanism of protein synthesis has not been permanently damaged by tryptophan-deficiency.

UI MeSH Term Description Entries
D007525 Isoelectric Focusing Electrophoresis in which a pH gradient is established in a gel medium and proteins migrate until they reach the site (or focus) at which the pH is equal to their isoelectric point. Electrofocusing,Focusing, Isoelectric
D007908 Lens, Crystalline A transparent, biconvex structure of the EYE, enclosed in a capsule and situated behind the IRIS and in front of the vitreous humor (VITREOUS BODY). It is slightly overlapped at its margin by the ciliary processes. Adaptation by the CILIARY BODY is crucial for OCULAR ACCOMMODATION. Eye Lens,Lens, Eye,Crystalline Lens
D009929 Organ Size The measurement of an organ in volume, mass, or heaviness. Organ Volume,Organ Weight,Size, Organ,Weight, Organ
D001835 Body Weight The mass or quantity of heaviness of an individual. It is expressed by units of pounds or kilograms. Body Weights,Weight, Body,Weights, Body
D002386 Cataract Partial or complete opacity on or in the lens or capsule of one or both eyes, impairing vision or causing blindness. The many kinds of cataract are classified by their morphology (size, shape, location) or etiology (cause and time of occurrence). (Dorland, 27th ed) Cataract, Membranous,Lens Opacities,Pseudoaphakia,Cataracts,Cataracts, Membranous,Lens Opacity,Membranous Cataract,Membranous Cataracts,Opacities, Lens,Opacity, Lens,Pseudoaphakias
D003677 Deficiency Diseases A condition produced by dietary or metabolic deficiency. The term includes all diseases caused by an insufficient supply of essential nutrients, i.e., protein (or amino acids), vitamins, and minerals. It also includes an inadequacy of calories. (From Dorland, 27th ed; Stedman, 25th ed) Deficiency Disease,Disease, Deficiency,Diseases, Deficiency
D005260 Female Females
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D014364 Tryptophan An essential amino acid that is necessary for normal growth in infants and for NITROGEN balance in adults. It is a precursor of INDOLE ALKALOIDS in plants. It is a precursor of SEROTONIN (hence its use as an antidepressant and sleep aid). It can be a precursor to NIACIN, albeit inefficiently, in mammals. Ardeydorm,Ardeytropin,L-Tryptophan,L-Tryptophan-ratiopharm,Levotryptophan,Lyphan,Naturruhe,Optimax,PMS-Tryptophan,Trofan,Tryptacin,Tryptan,Tryptophan Metabolism Alterations,ratio-Tryptophan,L Tryptophan,L Tryptophan ratiopharm,PMS Tryptophan,ratio Tryptophan
D051381 Rats The common name for the genus Rattus. Rattus,Rats, Laboratory,Rats, Norway,Rattus norvegicus,Laboratory Rat,Laboratory Rats,Norway Rat,Norway Rats,Rat,Rat, Laboratory,Rat, Norway,norvegicus, Rattus

Related Publications

C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
November 1981, Physiology & behavior,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
April 1995, Bioscience, biotechnology, and biochemistry,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
February 1969, American journal of ophthalmology,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
April 1979, Psychopharmacology,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
August 1997, Journal of nutritional science and vitaminology,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
August 1969, The Journal of nutrition,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
April 1982, Experimental eye research,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
April 1997, Revue medicale de Liege,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
January 1953, Vestnik oftalmologii,
C Ohrloff, and C Stoffel, and H R Koch, and U Wefers, and J Bours, and O Hockwin
January 1969, Bulletin des societes d'ophtalmologie de France,
Copied contents to your clipboard!