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At least 73 records · Page 4Linked to original sources
PubMed1992

[The organ topography of nonpoisonous snakes of the Boidae (boas and pythons) and Colubridae (adders) families].

In order to assist veterinarians with the diagnosis of diseases in snakes, the organ topography of 142 dissected snakes of 35 different species was analysed and examined in relation to body size and normal biotope. Apart from characteristic species specific differences, it was shown that there is a clear difference between arboreal and terrestrial snakes. It was recorded that nearly in all species the organs shifted along the body in relation to increase in growth.

Animals↗
PubMed1971

Antibody against Western equine encephalitis virus occurring in the serum of garter snakes (Colubridae: Thamnophis) in Saskatchewan.

A study was made of feeding and temperature as factors affecting the appearance of western equine encephalitis (WEE) virus-neutralizing serum (VNS) antibodies in the serum of garter snakes (Thamnophis spp). Eighty snakes were collected in the field, held in captivity under controlled conditions, and bled at frequent intervals. The sera were examined by standard procedures for the presence of WEE VNS-antibodies. It was found that snakes held between 10-28 degrees C showed conversion and intermittent WEE VNS-antibody appearance, whereas snakes held at 6 degrees C showed a decline in titre. The appearance of WEE VNS-antibody was related to environmental temperature, or a temperature-controlled factor, and not to feeding.

Animals↗
PubMed1984

[Anatomo-pathological study of fatal cases of Malpolon monspessulana (Herman, 1809) (Reptilia, Colubridae) bitten in the head by Cerastes cerastes (L., 1758) (Reptilia, Viperidae)].

Two Malpolon monspessulana (Herman, 1809) were bitten in the head by Cerastes cerastes (L., 1758). The first specimen is fastly dead ten minutes after the bite. This short time does not permit us to point out the lesions by current technics, but only by autopsy two sting marks of C. cerastes poison fangs bites. The second specimen is dead eight hours after the bite, an anatomopathological study shows oedematous and haemorrhagico lesions of the conjunctive and striated muscular tissues. The visceral wound chiefly consists in a myocardic erythrodiapedesis congestion, oedematous areas and alveolar bleedings, a biliar overcharge with vascular degeneration of hepatic parenchyme and also degenerative and athrocytar lesions of epithelial cells of contorted ducts of kidney.

Animals↗
PubMed1980

Lymphosarcoma associated with virus-like intranuclear inclusions in a California king snake (Colubridae: Lampropeltis).

A laboratory-bred and laboratory-reared male California king snake was submitted for clinical evaluation, and a mass was palpated caudal to the stomach and within the abdominal cavity. The snake was anesthetized and the mass was excised. A constricted atonic section of adjacent small intestine was removed and the ends were subsequently reanastomosed. The snake died 2 days post surgery; after histopathologic examination of all major organs (except muscle and brain), lymphosarcoma was diagnosed. Lymphocytes, approximately 70% of which contained small to large eosinophilic intranuclear inclusions, had infiltrated all major organs. By electron microscopic examination these inclusions were found to be large electron-dense granular structures. Aggregates of circular structures that measured 50 nm were seen in the cytoplasm of several cells.

Abdominal Neoplasms↗
PubMedDate not supplied

[Notes on bites of the snake Alsophis cantherigerus Bibron (Reptilia-Serpentes colubridae) in Cuba].

The two single cases of persons who were bitten by the abundant and current species of Cuban snake which is commonly known as "jubo" (Alsophis cantherigerus) and the bothersome lesions as a result of the enzymatic content of its saliva are reported. Likewise there are in the Antilles region other species of that genus which also cause such lesions since they also have the same characteristic. Bibliography on these ophidia and their main toxicology are pointed out.

Animals↗
PubMed1982

[The salivary glands of Philodryas patagoniensis Girard, 1857 (Serpentes, Colubridae). A morphological, morphometric and histological study].

Morphological, morphometrical and histochemical studies of the cell types in the salivary glands of Philodryas patagoniensis have been performed. It is concluded: 1) the acini of supra, infralabial and premaxillary glands are formed by mucous and mucoserous cells; the Duvernoy's gland by seromucous cells; 2) mucous cells show neutral and sulphated mucosubstances and sialic acid; mucoserous cells show neutral mucosubstance, sialic acid and protein radicals; seromucous cells of Duvernoy's gland show neutral mucosubstance and protein radicals. The acinar area, height of tubule and duct cells, and nuclear volume of acinar, tubule and duct cells were evaluated morphometrically.

Animals↗
PubMed2005

Phylogeny of the Colubroidea (Serpentes): new evidence from mitochondrial and nuclear genes.

The Colubroidea contains over 85% of all the extant species of snakes and is recognized as monophyletic based on morphological and molecular data. Using DNA sequences (cyt b, c-mos) from 100 species we inferred the phylogeny of colubroids with special reference to the largest family, the Colubridae. Tree inference was obtained using Bayesian, likelihood, and parsimony methods. All analyses produced five major groups, the Pareatidae, Viperidae, Homalopsidae, the Elapidae, and the Colubridae. The specific content of the latter two groups has been altered to accommodate evolutionary history and to yield a more stable taxonomy. We propose an updated classification based on the reallocation of species as indicated by our inferred phylogeny.

Animals↗
PubMed2003

Analysis of Colubroidea snake venoms by liquid chromatography with mass spectrometry: evolutionary and toxinological implications.

The evolution of the venomous function of snakes and the diversification of the toxins has been of tremendous research interest and considerable debate. It has become recently evident that the evolution of the toxins in the advanced snakes (Colubroidea) predated the evolution of the advanced, front-fanged delivery mechanisms. Historically, the venoms of snakes lacking front-fanged venom-delivery systems (conventionally grouped into the paraphyletic family Colubridae) have been largely neglected. In this study we used liquid chromatography with mass spectrometry (LC/MS) to analyze a large number of venoms from a wide array of species representing the major advanced snake clades Atractaspididae, Colubrinae, Elapidae, Homalopsinae, Natricinae, Psammophiinae, Pseudoxyrhophiinae, Xenodontinae, and Viperidae. We also present the first sequences of toxins from Azemiops feae as well as additional toxin sequences from the Colubrinae. The large body of data on molecular masses and retention times thus assembled demonstrates a hitherto unsuspected diversity of toxins in all lineages, having implications ranging from clinical management of envenomings to venom evolution to the use of isolated toxins as leads for drug design and development. Although definitive assignment of a toxin to a protein family can only be done through demonstrated structural studies such as N-terminal sequencing, the molecular mass data complemented by LC retention information, presented here, do permit formulation of reasonable hypotheses concerning snake venom evolution and potential clinical effects to a degree not possible till now, and some hypotheses of this kind are proposed here. The data will also be useful in biodiscovery.

Animals↗