| frequent development of pancreatic carcinomas in the rana nigromaculata group. | in 1979, 2 species of pond frogs (rana nigromaculata and rana plancyi plancyi) were imported from china, and hybrids were made between these and japanese, korean, and taiwanese pond frogs (r. nigromaculata, rana plancyi fukienensis and rana brevipoda) that had been kept for a number of years in the laboratory for amphibian biology of hiroshima university. from 1982, development of tumors, especially in the peritoneal cavity, was noticed frequently in the hybrids and also later, although rarely, ... | 1995 | 7641193 |
| eosinophilic meningitis caused by angiostrongylus cantonensis after ingestion of raw frogs. | angiostrongylus cantonensis is the most common cause of eosinophilic meningitis in humans after ingestion of raw or inadequately cooked intermediate hosts or food contaminated with infective third-stage larvae. frogs are known to be a paratenic host of a. cantonensis, but have never been reported as the infectious source of human angiostrongyliasis in taiwan. we report the first case of eosinophilic meningitis caused by a. cantonensis after ingestion of raw frogs (rana plancyi). | 2007 | 17297055 |
| first report of two balantidium species from the chinese giant salamander, andrias davidianus: balantidium sinensis nie 1935 and balantidium andianusis n. sp. | two ciliated protozoa, balantidium sinensis nie 1935 and balantidium andianusi n. sp., were isolated from the feces of a wild chinese giant salamander (andrias davidianus) captured from the mountainous area of shiyan, hubei province, central china in october 2006. it is the first report of balantidium species inhabiting cryptobranchoidea amphibians. the occurrence of b. sinensis in a. davidianus should be a new record because the type specimens were first discovered and named by nie in 1935 from ... | 2008 | 18043944 |
| detection of infectious fungal diseases of frogs inhabiting in korea. | in recent years, there has been a rapid decrease in amphibian populations worldwide, and infectious diseases have been associated with this decline. diseased frogs inhabiting korea were collected from fields, and the diseases were identified by morphological and molecular analyses. two fungal diseases-saprolegniasis and chromomycosis-were detected in the frogs. saprolegniasis caused by saprolegnia spp. was found in rana plancyi chosenica from gangwon-do and rana huanrenensis from chungbuk. chrom ... | 2008 | 23997600 |
| ranakinestatin-ppf from the skin secretion of the fukien gold-striped pond frog, pelophylax plancyi fukienensis: a prototype of a novel class of bradykinin b2 receptor antagonist peptide from ranid frogs. | the defensive skin secretions of many amphibians are a rich source of bradykinins and bradykinin-related peptides (brps). members of this peptide group are also common components of reptile and arthropod venoms due to their multiple biological functions that include induction of pain, effects on many smooth muscle types, and lowering systemic blood pressure. while most brps are bradykinin receptor agonists, some have curiously been found to be exquisite antagonists, such as the maximakinin gene- ... | 2014 | 25161395 |
| cloning from tissue surrogates: antimicrobial peptide (esculentin) cdnas from the defensive skin secretions of chinese ranid frogs. | the defensive skin secretions of amphibians are a rich source of bioactive peptides. here we describe a rapid technique for skin granular gland transcriptome cloning from a surrogate tissue-the secretion itself. cdna libraries were constructed from lyophilized skin secretion from each of the chinese frogs (rana schmackeri, rana versabilis, and rana plancyi fukienensis) using magnetic oligo(dt) bead-captured polyadenylated mrna as templates. specific esculentin cdnas were amplified by 3'-race usi ... | 2006 | 16427248 |
| amphibian skin peptides and their corresponding cdnas from single lyophilized secretion samples: identification of novel brevinins from three species of chinese frogs. | brevinins are peptides of 24 amino acid residues, originally isolated from the skin of the oriental frog, rana brevipoda porsa, by nature of their microbicidal activity against a wide range of gram-positive and gram-negative bacteria and against strains of pathogenic fungi. cdna libraries were constructed from lyophilized skin secretion of three, unstudied species of chinese frog, odorrana schmackeri, odorrana versabilis and pelophylax plancyi fukienensis, using our recently developed technique. ... | 2006 | 16139929 |
| pelophylaxins: novel antimicrobial peptide homologs from the skin secretion of the fukien gold-striped pond frog, pelophylax plancyi fukienensis: identification by "shotgun" cdna cloning and sequence analysis. | amphibian skin secretions are rich in antimicrobial peptides that act as important components of an innate immune system. here, we describe a novel "shotgun" skin peptide precursor cloning technique that facilitates rapid access to these genetically encoded molecules and effects their subsequent identification and structural characterization from the secretory peptidome. adopting this approach on a skin secretion-derived library from a hitherto unstudied chinese species of frog, we identified a ... | 2006 | 16139927 |
| isolation of microsatellite markers for pelophylax nigromaculata and a tentative application in detecting interspecific introgression. | twenty-seven microsatellite markers were obtained from the black-spotted frog, pelophylax nigromaculata,using the fiasco (fast isolation by aflp of sequences containing repeats) protocol. genotyping of 60 individuals showed that the number of alleles ranged from 4 to 25 with an average of 12.78 alleles per locus. the observed and expected heterozygosities ranged from 0.137 to 0.956 and 0.594 to 0.948, with averages of 0.531 and 0.809, respectively. many of these loci were successfully cross-ampl ... | 2012 | 22967873 |
| an immunohistochemical study of the pancreatic endocrine cells of the korean golden frog, rana plancyi chosenica. | the regional distribution and quantitative frequency of pancreatic endocrine cells were demonstrated in the korean golden frog (rana plancyi chosenica okada), which is known as a korean endemic species, for the first time, by immunohistochemical methods using specific mammalian antisera to insulin, glucagon, somatostatin and human pancreatic polypeptide (pp). in the pancreas of the korean golden frog, all four endocrine cell types were demonstrated. insulin- and glucagon-positive cells were loca ... | 2012 | 22472893 |
| complete mitochondrial genome of the seoul frog rana chosenica (amphibia, ranidae): comparison of r. chosenica and r. plancyi. | here, we have sequenced the complete mitochondrial genome of the seoul frog rana chosenica (amphibia, ranidae), which is known as a korean endemic species. it is listed as a vulnerable species by iucn red list and also an endangered species in south korea. the complete mitochondrial genome of r. chosenica consists of 18,357 bp. its gene arrangement pattern was identical with those of other rana frogs. we compared the mitochondrial genome of r. chosenica with that of the peking frog rana plancyi ... | 2011 | 21864031 |
| habitat associations of the endangered gold-spotted pond frog (rana chosenica). | we used field surveys and statistical models to investigate habitat associations of the endangered gold-spotted pond frog (rana chosenica). the characteristics of its habitat are of great importance for effective conservation for this declining species in western south korea. we evaluated a priori models that incorporated biotic and abiotic variables at the pond and landscape scales. the best-ranked model predicts that gold-spotted pond frogs will be more abundant at sites with fewer introduced ... | 2010 | 20443686 |
| habitat use and home range of the endangered gold-spotted pond frog (rana chosenica). | because of their complex life styles, amphibians and reptiles living in wetlands require both aquatic and terrestrial buffer zones in their protected conservation areas. due to steep declines in wild populations, the gold-spotted pond frog (rana chosenica) is listed as vulnerable by the iucn. however, lack of data about its movements and use of habitat prevents effective conservation planning. to determine the habitat use and home range of this species, we radio-tracked 44 adult frogs for 37 day ... | 2008 | 19267598 |
| bile salts of frogs: a new higher bile acid, 3 alpha, 7 alpha, 12 alpha, 26-tetrahydroxy-5 beta-cholestanoic acid from the bile rana plancyi. | bile salts of ten species of frogs of the family ranidae were examined by means of thin-layer chromatography, gas-liquid chromatography, and gas-liquid chromatography-mass spectrometry. their major bile alcohols were ranol, cyprinol, or bufol. four species of frogs contained lesser amounts of higher bile acids, and in two species c24 bile acids were present. a higher bile acid that has not been previously described was detected in rana plancyi. on the basis of the spectral data and the direct co ... | 1980 | 7381321 |
| [effects of environmental factors on the distribution of amphibians in agricultural landscape]. | we analyzed the relationship between the distribution of amphibians and the environmental variables at the habitat level and landscape level in fengqiu county of henan province, a typical region of the lower reaches of the yellow river, with the support of geographic information system (gis) and r software. at the habitat level, dissolved oxygen (do), conductivity (cond), turbidity (turb), nh3-n, pond-interior vegetation cover (veginterior), emergent vegetation cover (emer), pond-edge vegetation ... | 2019 | 30907553 |