1.Dynamic cell transition and immune response landscapes of axolotl limb regeneration revealed by single-cell analysis.
Hanbo LI ; Xiaoyu WEI ; Li ZHOU ; Weiqi ZHANG ; Chen WANG ; Yang GUO ; Denghui LI ; Jianyang CHEN ; Tianbin LIU ; Yingying ZHANG ; Shuai MA ; Congyan WANG ; Fujian TAN ; Jiangshan XU ; Yang LIU ; Yue YUAN ; Liang CHEN ; Qiaoran WANG ; Jing QU ; Yue SHEN ; Shanshan LIU ; Guangyi FAN ; Longqi LIU ; Xin LIU ; Yong HOU ; Guang-Hui LIU ; Ying GU ; Xun XU
Protein & Cell 2021;12(1):57-66
Ambystoma mexicanum/immunology*
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Amputation
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Animals
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Biomarkers/metabolism*
;
Blastomeres/immunology*
;
Cell Lineage/immunology*
;
Connective Tissue Cells/immunology*
;
Epithelial Cells/immunology*
;
Forelimb
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Gene Expression
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High-Throughput Nucleotide Sequencing
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Humans
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Immunity
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Peroxiredoxins/immunology*
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Regeneration/immunology*
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Regenerative Medicine/methods*
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Single-Cell Analysis/methods*
2.Identification of Acanthocephala discovered in changran-pickles and myungran-pickles.
Jong Tai KIM ; Jong Yeol PARK ; Hun Su SEO ; Hwa Gyun OH ; Jae Wuk NOH ; Sung Won KIM ; Hee Jeong YOUN
Journal of Veterinary Science 2001;2(2):111-114
To identify acanthocephala found in 'Changran-pickles' and 'Myungran-pickles' each organ was measured in permanent slides. In the present report, the results obtained were as follows: 1. Morphology of male worms: Worms possessed 18-19 longitudinal rows, with 4 hooks per row, which became smaller towards the base of proboscis. Each worm contained two testis and six cement glands arranged linearly. Body 22.0 by 0.8-0.6 mm and 15.0 by 0.6-0.4 mm, proboscis 284.8 by 227.6 microgram and 524.9 by 151.4 microgram, proboscis sheath 1570.7 by 72.7 microgram and 751.9 by 280.4 microgram, lemnisci length 2566.7 and 1085.6, testis 2202.9-1860.5 by 737.0-575.7 microgram and 1033.8-981.1 by 463.1-351.6 microgram, cement glands 940.2 by 441.2 microgram and 610.0 by 369.1 microgram. 2. Morphology of female worms: Worms possessed 14-18 longitudinal rows, with 6-10 hooks per row and become smaller toward the base of proboscis. Each worm contained an uterine bell and uterus in the posterior portion and the eggs filled the body cavity. Body 14.0~51.0 mm by 0.7-0.5~2.2-1.4 mm, proboscis 466.1-268.9 microgram by 259.9-252.0 microgram, proboscis sheath 1550.7-506.0 by 298.8-231.1 microgram, lemnisci length 1325.7-473.1 microgram, eggs 112.4 by 28.5 microgram~51.7 by 14.0 microgram. In this present study, the acanthocephala collected in 'Changran-pickles' and 'Myungran-pickles' were identified as Echinorhynchus gadi by morphological features.
Acanthocephala/anatomy & histology/classification/*isolation & purification
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Animals
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Female
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Fish Diseases/*parasitology
;
Fishes
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Helminthiasis, Animal/*parasitology
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Korea
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Male
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Seafood/*parasitology
3.Dexamethasone Downregulates Expressions of 14-3-3β and γ-Isoforms in Mice with Eosinophilic Meningitis Caused by Angiostrongylus cantonensis Infection
Hung Chin TSAI ; Yu Hsin CHEN ; Chuan Min YEN ; Li Yu CHUNG ; Shue Ren WANN ; Susan Shin Jung LEE ; Yao Shen CHEN
The Korean Journal of Parasitology 2019;57(3):249-256
Steroids are commonly used in patients with eosinophilic meningitis caused by A. cantonensis infections. The mechanism steroids act on eosinophilic meningitis remains unclear. In this mouse experiments, expressions of 14-3-3 isoform β and γ proteins significantly increased in the CSF 2–3 weeks after the infection, but not increasedin the dexamethasone-treated group. Expression of 14-3-3 β, γ, ɛ, and θ isoforms increased in brain meninges over the 3-week period after infection and decreased due to dexamethasone treatment. In conclusion, administration of dexamethasone in mice with eosinophilic meningitis decreased expressions of 14-3-3 isoform proteins in the CSF and in brain meninges.
Angiostrongylus cantonensis
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Angiostrongylus
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Animals
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Brain
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Dexamethasone
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Eosinophils
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Humans
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Meninges
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Meningitis
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Mice
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Protein Isoforms
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Steroids
4.Kilovoltage radiotherapy for companion animals: dosimetric comparison of 300 kV, 450 kV, and 6 MV X-ray beams
Jaehyeon SEO ; Jaeman SON ; Yeona CHO ; Nohwon PARK ; Dong Wook KIM ; Jinsung KIM ; Myonggeun YOON
Journal of Veterinary Science 2018;19(4):550-556
Radiotherapy for the treatment of cancer in companion animals is currently administered by using megavoltage X-ray machines. Because these machines are expensive, most animal hospitals do not perform radiotherapy. This study evaluated the ability of relatively inexpensive kilovoltage X-ray machines to treat companion animals. A simulation study based on a commercial treatment-planning system was performed for tumors of the brain (non-infectious meningoencephalitis), nasal cavity (malignant nasal tumors), forefoot (malignant muscular tumors), and abdomen (malignant intestinal tumors). The results of kilovoltage (300 kV and 450 kV) and megavoltage (6 MV) X-ray beams were compared. Whereas the 300 kV and 6 MV X-ray beams provided optimal radiation dose homogeneity and conformity, respectively, for brain tumors, the 6 MV X-rays provided optimal homogeneity and radiation conformity for nasal cavity, forefoot, and abdominal tumors. Although megavoltage X-ray beams provided better radiation dose distribution in most treated animals, the differences between megavoltage and kilovoltage X-ray beams were relatively small. The similar therapeutic effects of the kilovoltage and 6 MV X-ray beams suggest that kilovoltage X-ray beams may be effective alternatives to megavoltage X-ray beams in treating cancers in companion animals.
Abdomen
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Animals
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Brain
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Brain Neoplasms
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Friends
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Hospitals, Animal
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Humans
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Nasal Cavity
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Pets
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Radiotherapy
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Therapeutic Uses
5.Endoscopic Removal of Foreign Bodies in the Upper Gastrointestinal Tract.
Tae Hee LEE ; Gi Se LEE ; Eui Hyeog IM ; Kyu Chan HUH ; Chang Won LEE ; Young Woo CHOI ; Young Woo KANG
Korean Journal of Gastrointestinal Endoscopy 2004;28(2):61-66
BACKGROUND/AIMS: Foreign bodies in the upper gastrointestinal tract are produced chiefly by accidental swallowing, but rarely produce symptoms. Although most foreign bodies pass spontaneously, 10~20% of those need treatment. We evaluated the role of endoscopy for removal of foreign bodies in the upper gastrointestinal tract. METHODS: We retrospectively reviewed 80 cases of foreign bodies in the upper gastrointestinal tract who had been treated using endoscopy at Konyang University Hospital from February 2000 to July 2003. RESULTS: The age ranged from 14 months to 75 years (mean 36.8 years-old). Patients over 60 years, under 10 years were 20 cases and 28 cases, respectively and male to female ratio was 1.1:1. Common foreign bodies are coin (20 cases), fishbone (12 cases), animal bone (11 cases) and meat stuff (9 cases). The most common location was the esophagus (68.8%). In most cases (88.8%), foreign bodies were removed using alligator tooth forceps. Fourteen patients had co-morbidities such as esophageal diseases, psychiatric disorders, diabetes mellitus, hypertension, stomach cancer, and subtotal gastrectomy. CONCLUSIONS: Endoscopy is a useful tool for removal of foreign bodies in the upper gastrointestinal tract.
Alligators and Crocodiles
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Animals
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Deglutition
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Diabetes Mellitus
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Endoscopy
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Esophageal Diseases
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Esophagus
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Female
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Foreign Bodies*
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Gastrectomy
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Humans
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Hypertension
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Male
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Meat
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Numismatics
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Retrospective Studies
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Stomach Neoplasms
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Surgical Instruments
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Tooth
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Upper Gastrointestinal Tract*
6.Endoscopic Treatment of Foreign Bodies in the Upper Gastrointestinal Tract.
Yoon Sae KANG ; Jae Hoon JUNG ; Kyung Hoon CHAE ; Won Seok HEO ; Yeon Soo KIM ; Seok Hyun KIM ; Jae Kyu SUNG ; Byung Seok LEE ; Hyun Yong JEONG
Korean Journal of Gastrointestinal Endoscopy 2005;31(3):135-139
BACKGROUND/AIMS: The ingestion of foreign bodies in the upper gastrointestinal tract usually happens as a result of accidental swallowing, and rarely produces symptoms. Although most foreign bodies are eliminated spontaneously, 10~20% of cases need treatment with endoscopy. We evaluated the role of endoscopy for removing foreign bodies from the upper gastrointestinal tract. METHODS: We analyzed one hundred and thirty-nine cases of foreign bodies in the upper gastrointestinal tract which were endoscopically treated at Chungnam National University Hospital from January 2001 to July 2004. RESULTS: Patients' age ranged from 6 months to 96 years old (mean 36.0 years old). The ratio of males to females was 1.2 : 1. The common foreign bodies included coins (29 cases) and fish bones (23 cases), animal bones (19 cases), and stones (15 cases) follows in order. The most common location was the esophagus (79.9%). In most cases (73.4%), the foreign body was removed using an alligator tooth and a grasping forceps. Twenty-eight among one hundred and thirty-nine patients had a co-morbid condition, such as esophageal disease, diabetes mellitus, hypertension, stomach cancer, or a psychiatric disorder. CONCLUSIONS: Endoscopic removal is a very powerful and useful method for removing foreign bodies from the upper gastrointestinal tract. Nevertheless, a simpler and more efficient endoscopic equipment is required
Alligators and Crocodiles
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Animals
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Chungcheongnam-do
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Deglutition
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Diabetes Mellitus
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Eating
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Endoscopy
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Esophageal Diseases
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Esophagus
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Female
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Foreign Bodies*
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Hand Strength
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Humans
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Hypertension
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Male
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Numismatics
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Stomach Neoplasms
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Surgical Instruments
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Tooth
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Upper Gastrointestinal Tract*
7.Establishment of a T(m)-shift Method for Detection of Cat-Derived Hookworms
Yeqi FU ; Yunqiu LIU ; Asmaa M I ABUZEID ; Yue HUANG ; Xue ZHOU ; Long HE ; Qi ZHAO ; Xiu LI ; Jumei LIU ; Rongkun RAN ; Guoqing LI
The Korean Journal of Parasitology 2019;57(1):9-15
Melting temperature shift (T(m)-shift) is a new detection method that analyze the melting curve on real-time PCR thermocycler using SYBR Green I fluorescent dye. To establish a T(m)-shift method for the detection of Ancylostoma ceylanicum and A. tubaeforme in cats, specific primers, with GC tail of unequal length attached to their 5′ end, were designed based on 2 SNP loci (ITS101 and ITS296) of the internal transcribed spacer 1 (ITS1) sequences. The standard curve of T(m)-shift was established using the standard plasmids of A. ceylanicum (AceP) and A. tubaeforme (AtuP). The T(m)-shift method stability, sensitivity, and accuracy were tested with reference to the standard curve, and clinical fecal samples were also examined. The results demonstrated that the 2 sets of primers based on the 2 SNPs could accurately distinguish between A. ceylanicum and A. tubaeforme. The coefficient of variation (CV) of T(m)-values of AceP and AtuP was 0.07% and 0.06% in ITS101 and was 0.06% and 0.08% in ITS296, respectively. The minimum detectable DNA concentration was 5.22×10⁻⁶ and 5.28×10⁻⁶ ng/μl samples of AceP and AtuP, respectively. The accuracy of T(m)-shift method reached 100% based on examination of 10 hookworm DNA samples with known species. In the clinical detection of hookworm in 69 stray cat fecal sample, the T(m)-shift detection results were consistent with the microscopic examination and successfully differentiated between the 2-hookworm species. In conclusion, the developed method is a rapid, sensitive and accurate technique and can provide a promising tool for clinical detection and epidemiological investigation of cat-derived hookworms.
Ancylostoma
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Ancylostomatoidea
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Animals
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Cats
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DNA
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Freezing
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Methods
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Plasmids
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Polymorphism, Single Nucleotide
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Real-Time Polymerase Chain Reaction
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Tail
8.Role of Chromosome Changes in Crocodylus Evolution and Diversity.
Kornsorn SRIKULNATH ; Watcharaporn THAPANA ; Narongrit MUANGMAI
Genomics & Informatics 2015;13(4):102-111
The karyotypes of most species of crocodilians were studied using conventional and molecular cytogenetics. These provided an important contribution of chromosomal rearrangements for the evolutionary processes of Crocodylia and Sauropsida (birds and reptiles). The karyotypic features of crocodilians contain small diploid chromosome numbers (30~42), with little interspecific variation of the chromosome arm number (fundamental number) among crocodiles (56~60). This suggested that centric fusion and/or fission events occurred in the lineage, leading to crocodilian evolution and diversity. The chromosome numbers of Alligator, Caiman, Melanosuchus, Paleosuchus, Gavialis, Tomistoma, Mecistops, and Osteolaemus were stable within each genus, whereas those of Crocodylus (crocodylians) varied within the taxa. This agreed with molecular phylogeny that suggested a highly recent radiation of Crocodylus species. Karyotype analysis also suggests the direction of molecular phylogenetic placement among Crocodylus species and their migration from the Indo-Pacific to Africa and The New World. Crocodylus species originated from an ancestor in the Indo-Pacific around 9~16 million years ago (MYA) in the mid-Miocene, with a rapid radiation and dispersion into Africa 8~12 MYA. This was followed by a trans-Atlantic dispersion to the New World between 4~8 MYA in the Pliocene. The chromosomes provided a better understanding of crocodilian evolution and diversity, which will be useful for further study of the genome evolution in Crocodylia.
Africa
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Alligators and Crocodiles
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Arm
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Cytogenetics
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Diploidy
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Genome
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Karyotype
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Mya
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Phylogeny
9.New host and locality records of snake intestinal nematode Kalicephalus spp in Indonesia.
Asian Pacific Journal of Tropical Biomedicine 2011;1(2):121-123
OBJECTIVETo observe three species of Kalicephalus found in three species of snake (Ophiophagus hannah, Ptyas mucosus, and Naja Sputatrix) during research on Capture Snake for Trading in Java and Snake Biodiversity in Kalimantan Islands.
METHODSSpecimens for light microscopy examination were fixed with warm 70% alcohol, cleared and mounted in lactophenol for wet mounting. Drawings were made with the aid of a drawing tube attached to a Nikon compound microscope. Measurements were given in micrometers (µ) as the average of findings, followed by the range in parentheses, unless otherwise stated.
RESULTSKalicephalus (Costatus) indicus was found from 7 Ptyas mucosus, Kalicephalus bungari from 2 Naja sputatrix and 1 Kalicephalus (Costatus) indicus and Kalicephalus assimilis found from 1 Ophiophagus hannah. The morphology and measurement of three species of Kalicephalus found in this study were close to those described before.
CONCLUSIONSNew finding of host of Kalicephalus (Costatus) indicus and Kalicephalus bungari was a snake species of Naja sputatrix. New records of locality were Kalimantan island as the new locality of Kalicephalus assimilis, and Java island was new locality of Kalicephalus (Costatus) indicus.
Ancylostomatoidea ; anatomy & histology ; growth & development ; isolation & purification ; physiology ; Animal Structures ; anatomy & histology ; Animals ; Body Size ; Colubridae ; parasitology ; Elapidae ; parasitology ; Host Specificity ; Indonesia ; Intestines ; parasitology ; Male
10.Canine behavioral problems and their effect on relinquishment of the Jindo dog.
Young Mee KIM ; Sun A KIM ; Sang Mok LEE ; Yoon Ju CHOI ; Byung Joo KIM ; Nam Shik SHIN
Journal of Veterinary Science 2010;11(4):345-350
The purpose of this study was to evaluate behavior problems of the Jindo dog, the native dog of Korea, based on an owner's survey and their effect on pet relinquishment. To live a better life with their own pet and prevent relinquishment, it is important to understand the innate behavior characteristics of dog breed and the potential causes of relinquishment. Information concerning various factors and demonstration of the five most common behavior problems was collected via 189 completed questionnaires. No factors significantly affected the demonstration of behavior problem. A total 151 of 189 dogs had behavior problems (79.9%) and 38 dogs did not have behavior problems (20.1%). Among 151 dogs, 139 dogs showed single behavior problem (92.1%). They were 'excessive excitability' (46.8%), 'excessive vocalization' (30.2%), 'inappropriate elimination' (17.3%), 'destructive behavior' (4.3%), and 'aggressive behavior' (1.4%), respectively. In addition, 12 dogs showed two concurrent behavior problems (7.9%) According to the results, the relinquishment of Jindo dogs was not significantly associated with canine behavior problems, which is the single greatest risk factor of relinquishment in general. The possible reasons for potential behavior problems include improper raising, lack of socialization, and insufficient dog training classes, therefore canine behavior would be improved by owner education.
Animals
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*Behavior, Animal
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Dogs/*physiology
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Female
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Humans
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Male
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Ownership/*statistics & numerical data
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*Pets
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Questionnaires
;
Republic of Korea
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Risk Factors