Cancer is the second leading disease causing human ***-clinical in vivo studies are essential for translating in vitro laboratory research results into the ***,including the mouse and rat,have been widely used for pre...
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Cancer is the second leading disease causing human ***-clinical in vivo studies are essential for translating in vitro laboratory research results into the ***,including the mouse and rat,have been widely used for pre-clinical studies due to their small size,clear genetic backgrounds,rapid propagation,and mature transgenic ***,because rodents are evolutionarily distinct from humans,many pre-clinical research results using rodent models cannot be reproduced in the ***-human primates(NHPs) may be better animal models than rodents for human cancer research because NHPs and humans share greater similarity in regards to their genetic evolution,immune system,physiology and *** article reviews the latest progress of cancer research in NHPs by focusing on the carcinogenesis of different NHPs induced by chemical and biological ***,future research directions for the use of NHPs in cancer research are discussed.
Recent genome studies indicate that tree shrew is in the order or a closest sister of primates,and thus may be one of the best animals to model human *** this paper,we report on a social defeat model of depression in ...
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Recent genome studies indicate that tree shrew is in the order or a closest sister of primates,and thus may be one of the best animals to model human *** this paper,we report on a social defeat model of depression in tree shrew(Tupaia belangeri chinensis).Two male tree shrews were housed in a pair-cage consisting of two independent cages separated by a wire mesh partition with a door connecting the two *** one week adaptation,the connecting door was opened and a brief fighting occurs between the two male tree shrews and this social conflict session consisted of 1 h direct conflict(fighting) and 23 h indirect influence(***,visual cues) per day for 21 *** defeated tree shrew was considered the *** with na?ve animals,subordinate tree shrews at the final week of social conflict session showed alterations in body weight,locomotion,avoidance behavior and urinary cortisol ***,these alterations persisted for over two *** also report on a novel captive conditioning model of learning and memory in tree *** automatic trapping cage was placed in a small closed room with a freely-moving tree *** the first four trials,the tree shrew was not trapped when it entered the cage and ate the bait apple,but it was trapped and kept in the cage for 1 h on the fifth *** was defined as the time between release of the tree shrew and when it entered the captive *** during the five trials indicated adaptation.A test trial 24 h later was used to measure whether the one-trial trapping during the fifth trial could form captive *** shrews showed much longer trapping latencies in the test trial than the adaptation *** N-methyl-d-aspartate(NMDA) receptor antagonist MK-801(0.2 mg/kg,i.p.),known to prevent the formation of memory,did not affect latencies in the adaptation trails,but did block captive memory as it led to much shorter trapping latencies compared to saline treatment in the test tr
Due to their special phylogenetic position in the Euarchontoglires and close affinity to primates,tree shrews have been proposed as an alternative experimental animal to primates in biomedical ***,the population genet...
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Due to their special phylogenetic position in the Euarchontoglires and close affinity to primates,tree shrews have been proposed as an alternative experimental animal to primates in biomedical ***,the population genetic structure of tree shrews has largely remained unknown and this has hindered the development of tree shrew breeding and *** we sampled 80 Chinese tree shrews(Tupaia belangeri chinensis) in Kunming,China,and analyzed partial mtDNA control region sequence *** on our samples and two published sequences from northern tree shrews(***),we identified 29 substitutions in the mtDNA control region fragment(~ 604 bp) across 82 individuals and defined 13 *** samples were selected for sequencing of the cytochrome b(Cyt b;1134 bp) gene based on control region sequence variation and were analyzed in combination with 34 published sequences to solidify the phylogenetic pattern obtained from control region ***,tree shrews from Kunming have high genetic diversity and present a remarkable long genetic distance to the two reported northern tree shrews outside *** results provide some caution when using tree shrews to establish animal models because of this apparent genetic *** addition,the high genetic diversity of Chinese tree shrews inhabiting Kunming suggests that systematic genetic investigations should be conducted before establishing an inbred strain for medical and biological research.
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