(n.) The natural history of fishes; that branch of zoology which relates to fishes, including their structure, classification, and habits.
Example Sentences:
(1) In the course of ichthyological inventory investigations in the main water-course of the Narew River the occurrence of Tracheliastes polycolpus Nordm.
Ichthyosis
Definition:
(n.) A disease in which the skin is thick, rough, and scaly; -- called also fishskin.
Example Sentences:
(1) The results obtained in congenital ichthyosiform erythroderma, lamellar ichthyosis, and Papillon-Lefèvre syndrome were judged as better than those usually reported with etretinate.
(2) In this prospective study, 51 patients suffering from psoriasis and ichthyosis were treated with acitretin for 2 years.
(3) Scaling in patients with recessive X-linked ichthyosis is caused by lack of activity of the enzyme steroid sulfatase.
(4) Skin changes varied from patchy hyperkeratosis to a severe generalized ichthyosis-like condition.
(5) (1984) as autosomal dominant lamellar ichthyosis and thus confirm the existence of this new form of ichthyosis.
(6) Two brothers are described with ichthyosis, hepatosplenomegaly and signs of cerebellar degeneration.
(7) In psoriasis and ichthyosis urea is effective in creams substitution therapy.
(8) Trichothiodystrophy (TTD) is an autosomal recessive disorder characterized by brittle hair with reduced sulfur content, ichthyosis, peculiar face, and mental and physical retardation.
(9) Sex-linked ichthyosis, a rather common genodermatosis, has recently been linked with deficiency of the enzyme steroid sulfatase.
(10) Some biopsy specimens have been diagnosed as showing lamellar ichthyosis, while others have again shown psoriasis.
(11) We study here the case of a male patient aged 22 years with antecedents of Down syndrome and X-linked ichthyosis.
(12) It is concluded that the dry skin often seen in atopic dermatitis may be a mild eczematous lesion of atopic dermatitis, or a manifestation of concomitant ichthyosis, or a complex of these two changes.
(13) Founding Member and Trustee, Ichthyosis Support Group.
(14) In the human there is an X-linked gene affecting steroid sulphatase (STS) activity which, when deficient, is associated with X-linked congenital ichthyosis.
(15) In seborrheic keratoses, allergic contact dermatitis and ichthyosis vulgaris, the cytochrome oxidase activity was greatly reduced or abolished in keratinocytes, Langerhans' cells, and melanocytes, whereas the peroxidase activity was present as in normal epidermis.
(16) A unique disorder characterized by ichthyosis and defects of the appendages and teeth is reported.
(17) Three observations were made: CRBP showed little or no variations whereas CRABP was either normal (seborrheic keratosis, lichenification, nonlesional psoriatic and nonlesional Darier disease skin) or elevated (psoriatic plaques, lamellar ichthyosis, lesional Darier disease, pityriasis rubra pilaris, keratosis pilaris); high levels of CRABP might indicate a greater sensitivity of the lesions to systemic synthetic retinoids with a carboxyl group in the C15 position, and systemic administration of etretin increased the levels of CRABP but not CRBP.
(18) Steroid-sulfatase activity was absent in the cultured fibroblasts of nine affected members of eight families with sex-linked ichthyosis.
(19) The skin of a girl born with the typical appearance of "collodion baby," evolved into an exfoliative erythroderma that clinically was lamellar ichthyosis.
(20) She had striking ichthyosis and detailed investigations into the structure of the epidermis were performed.