| poikilotherms as reservoirs of q-fever (coxiella burnetii) in uttar pradesh. | water snakes (natrix natrix), rat snakes (ptyas korros), cobras (naja naja), pythons (python molurus), tortoises (kachuga sp.), plankton fish (cirrhina mrigala), frogs (rana tigrina), toads (bufo sp.) and monitors (varanus indicus) were screened for evidence of q-fever infection by the capillary agglutination test on sera to detect antibodies and/or by attempts to demonstrate coxiella burnetii in spleen and liver samples. sero-reactors were observed among water and rat snakes, pythons and tortoi ... | 1979 | 459042 |
| putative thyroid hormone receptors in red blood cells of some reptiles. | putative triiodothyronine (t3) receptors have been detected in the nuclei of red blood cells (rbc) in a number of reptile species. the binding characteristics of t3 receptors in vitro were dissociation constant (kd) 9.1 to 28.58, 36.8 and 40, and 11.12 and 11.36 pm, and binding capacity (bmax) 0.12 to 0.37, 0.17 and 0.24, and 0.19 and 0.28 fmol per million cells in the rat snake (ptyas korros), soft-shelled turtle (trionyx sinensis), and tokay gecko (gekko gecko), respectively. these data were o ... | 1987 | 3609713 |
| the mechanism of action of angiotensin ii in the rat snake, ptyas korros. | the hindquarter of the rat snake, ptyas korros, was isolated for perfusion study in order to investigate the mechanism of action of angiotensin (ang) ii. both ang ii and norepinephrine (ne) produced concentration-dependent increases in perfusion pressure. [sar1, ile8] ang ii significantly attenuated the response to ang ii but not that of ne. phentolamine significantly reduced the responses to both ang ii and ne, with much greater inhibition on ne than ang ii. these findings suggest the presence ... | 1986 | 3956988 |
| contractile response of the isolated dorsal aorta of the snake to angiotensin ii and norepinephrine. | vasopressor action is a phylogenetically old function of angiotensin (ang) ii. the action can be ascribed to both direct activation of vascular ang ii receptors and through catecholamine release. in the rat snake, ptyas korros, the possible presence of common adrenergic-ang receptors and their involvement in this action have been proposed. in order to elucidate the vasopressor mechanism of ang ii in the snake, and to test the presence of common adrenergic-ang receptors, the contractile response ... | 1985 | 4065534 |
| thyroid and skin-shedding in the rat snake (ptyas korros). | epidermal-thyroid relationships were studied in thyroidectomized (tx) ptyas korros kept at 23 degrees c by observing changes in shedding frequency (sf), body weight, oxygen consumption rate (ocr), and postsurgical survival. tx animals showed increased sfs but lost weight and eventually died, as did tx animals receiving 3-mono-iodotyrosine injections. however, injections of 3, 5-diiodothyronine inhibited shedding and the animals survived longer. ocrs were similar in all control and experimental g ... | 1983 | 6842157 |
| severe infection of wild-caught snakes with spirometra erinaceieuropaei from food markets in guangzhou, china involves a risk for zoonotic sparganosis. | wild-caught snakes are a popular and traditional food in china. however, little known to the public, snakes are also intermediate hosts of spirometra erinaceieuropaei, a food- and water-borne pathogen of sparganosis. therefore, we investigated the prevalence of s. erinaceieuropaei in 10 popular species of wild-caught snakes in guangzhou city (guangdong province) between july 2009 and july 2010. one hundred and twenty-four specimens of 10 species (including enhydris plumbea, zoacys dhumnades, ela ... | 2010 | 21348631 |
| hepatozoon and theileria species detected in ticks collected from mammals and snakes in thailand. | we report the detection of hepatozoon and theileria in 103 ticks from mammals and snakes in thailand. by using a genus-specific 18s rrna pcr, hepatozoon and theileria spp. were detected in 8% and 18%, respectively, of ticks (n=79) removed from mammals. of the ticks removed from snakes (n=24), 96% were infected with hepatozoon spp., but none were infected with theileria. phylogenetic analysis revealed that hepatozoon spp. detected from dermacentor astrosignatus and dermacentor auratus ticks from ... | 2015 | 25736475 |
| hypotensive actions of snake parathyroid glands. | parathyroid gland extracts from four different snake species, ptyas korros, ptyas mucosa, elaphe radiata, and naja naja, were prepared and their hypotensive actions were assayed in anesthetized p. korros. all extracts were hypotensive and the responses, except that of n. naja, were dose related. their potencies were, however, different in different species. these data suggest that the hypotensive property of the parathyroid hormone is probably widely distributed in submammalian vertebrates. | 1983 | 6667839 |
| adrenergic receptors of isolated snake atria. | cardiac adrenergic receptors in snakes were examined using an isolated atria preparation of naja naja and ptyas korros. treatments included an examination of the atrial responses to selective alpha- and beta-adrenergic agonists and antagonists. in both species, both phenylephrine and isoproterenol produced dose-dependent increases in the atrial beating rate and tension. phenylephrine-induced increases were characterized with a high affinity and low affinity components. these positive chronotropi ... | 1985 | 2861969 |
| [reseach on origin identification of commercially available zaocys dhumnades]. | through market investigation, the adulteration of zaocys dhumnades on markets was found out, and samples of authentic and adulterated z. dhumnades on markets were collected. the origin and properties of the adulterated z. dhumnades were studied in order to provide reference for the identification of z. dhumnades. the counterfeit z. dhumnades sold on markets were as follows: ptyas korros, p. mucosus, najanaja atra, sinonatrix annularis, dinodon septentrionalis, etc. it is found that there existed ... | 2019 | 31090287 |
| the vasopressor action of the renin-angiotensin system in the rat snake, ptyas korros. | the pressor actions of homologous kidney extract and human angiotensins i and ii were studied in the conscious rat snake, ptyas korros. a converting enzyme inhibitor (captopril), an angiotensin ii analogue [( sar1,ala8]ang ii), an alpha-adrenergic receptor antagonist (phentolamine), and a catecholamine releaser (reserpine) were used to elucidate their actions. it was found that captopril attenuated the pressor effects of the kidney extract and angiotensin i but not that of angiotensin ii. [sar1, ... | 1984 | 6392011 |
| blood pressure homeostasis in the snake, ptyas korros. | three putative pressor systems, the alpha-adrenergic system (as), the renin angiotensin system (ras), and the arginine vasotocin system (avt-s), were studied for their roles in blood pressure regulation and their possible interactions in the rat snake. ptyas korros. norepinephrine (ne), angiotensin i (ang i), and arginine vasotocin (avt) increased the mean arterial pressure (map) of the snake while administration of phentolamine, an alpha-adrenergic antagonist, and captopril, an ang-converting e ... | 1986 | 3549436 |
| application of coi barcode sequence for the identification of snake medicine (zaocys). | counterfeits in the medicine market make the authentication of snakes used for chinese medicine a challenge to chinese drug regulatory control agencies. this paper explores existing methods that can be used to quickly and accurately distinguish zaocys (z. dhumnades) from its counterfeits for routine identification of snake meats in food and drug control laboratories. in this research, the cytochrome oxidase i (coi) fragments of 51 samples from 17 species of snakes were amplified using polymerase ... | 2016 | 24857374 |
| changes in the epidermal histology during the sloughing cycle in the rat snake ptyas korros schlegel, with correlated observations on the thyroid gland. | 1. study of the epidermal histology throughout the sloughing cycle in the snake ptyas korros revealed the existence of a well-defined mesos layer and showed that the α-layer is completed in the immediate post-shedding resting-phase. these observations supplement previous histological studies of the snake epidermis and further substantiate the essential homology of the epidermal generation in these forms with similar units in lizards. 2. thyroid weight is not correlated with follicular cell heigh ... | 1970 | 29332465 |
| molecular evidence of spirometra erinaceieuropaei infection in snakes ptyas korros from lao pdr and thailand and frogs hoplobatrachus rugulosus from myanmar. | sparganosis is a parasitic disease in humans and animals caused by plerocercoid larvae (spargana) of the genus spirometra. spirometra erinaceieuropaei is the major causative agent of the disease in asian countries. however, molecular evidence of the causative parasite species in animals remains lacking. a total of 19 spargana specimens were obtained from frogs, hoplobatrachus rugulosus, collected from myanmar and snakes, ptyas korros, from lao pdr and thailand. a partial sequence of mitochondria ... | 2014 | 26466413 |
| six platyhelminths from malaysian reptiles including paradistomoidella cerberi n.g., n.sp. (digenea: dicrocoeliidae). | paradistomoidella cerberi n.g., n.sp. and paracanthostomum cerberi from cerberus rhynchops, xenopharynx pyriformis and allopharynx mehrai from ptyas korros, neopronocephalus orientalis from geoemyda spinosa, and duthiersia expansa from varanus salvator are all reported from the area of kuala lumpur, malaysia. paradistomoidella cerberi most closely resembles members of paradistomoides but is characterized by relatively short caeca, a cirrus sac containing a bipartite rather than sinous internal s ... | 1981 | 7229330 |