• Journal of Animal Science and Technology
• /
• v.62 no.1
• /
• pp.58-63
• /
• 2020

The pre-treatment condition affects on the element analysis of inductively coupled plasma (ICP). In this study the pre-treatment condition of ICP has been studied to quantify elements in dog's hair. The hair samples were collected from twelve female Beagles by clipping them into 1 or 2 cm at the back neck. The qualitative and quantitative analysis of elements in hairs were performed by using ICP. By ICP nine elements were qualitatively detected and quantitatively analyzed (Ca, Cu, Fe, K, Mg, Na, P, Se, Zn). The measured amounts of elements were compared between 3 step and 2 step procedures which were with and without the acetone based washing step. The quantitative analysis showed that the concentrations of K, Na, P, and Se were significantly decreased in hair samples with acetone-based washing (p < 0.005 or 0.001) unlike those without the acetone-based washing. It implied that some minerals are lost by the acetone based washing during the sample preparation step. Therefore, the acetone based washing process is not suitable for quantifying elements in dog's hair. In addition, the results of qualitative and quantitative analysis were compared. Although there was a difference in absolute values of elemental contents in hair, the results of qualitative and quantitative analysis were significantly correlated each other. This finding suggested that the results of qualitative analysis can be used to monitor elemental contents in dog's hair.

• Journal of Veterinary Clinics
• /
• v.32 no.6
• /
• pp.527-529
• /
• 2015

A 7 year-old intact female black spotted and white hair Shih-tzu dog visited for screening of vital condition and was suspected multifocal alopecia on physical examination. On dermatologic examination, alopecia with patches on black spot area, generalized seborrhea sicca, and bacterial infection were detected. Additionally, melanin clumping in the hair shafts on the alopecic area was detected by microscopic examination. Based on the signalment and dermatologic examination, black hair follicular dysplasia was diagnosed. To our best knowledge, this the first case report of black hair follicular dysplasia in Shih-tzu.

• Journal of Veterinary Clinics
• /
• v.19 no.2
• /
• pp.215-218
• /
• 2002

It is known that house dust mites which settle on sofa, carpet, and dust in the house ignite asthma and allergic rhinitis. Dermatophagoides farinae and Dermatophagoides pteronyssinus distribute widely and densely in Korea. In this study we carried out to identify that shed hair of dogs which was applied topically with fipronil ($\Frontline^{circledR}$) kill house dust mites. We co-cultured house dust mites with fipronil-applied hair of dog during 12 hours, and then compared the death rate of mites here with that cultured without hair. The larger amount of hair, the more mites were killed. The death rate of mites was higher than control significantly until 2 weeks after $\Frontline^{circledR}$ application. Hair which had been shed at 3 days after $\Frontline^{circledR}$ application always killed the smaller number of mites than not shed. The present study suggested that the use of $\Frontline^{circledR}$ to our pets control house dust mites effectively.

• Korean Journal of Plant Resources
• /
• v.18 no.1
• /
• pp.198-206
• /
• 2005

This study was carried out to identify bacterial strains adhered to domestic pet dog hair and to identify antibacterial extracts from natural compounds. A total of 76 strains were isolated from dog hair. The most common species isolated was Staphylococcus spp. (41 isolates), followed by Micrococcus spp. (21 isolates), Enterococcus spp. (8 isolates), Bacillus sup. (3 isolates), Exiguobacterium sup. (2 isolates), Shigella spp. (1 isolate) and Zoogloea spp. (1 isolate). These results suggested that dog hair could be a source of bacterial contamination to human. The susceptibility of isolates to antibiotics and antibacterial activities of the natural compounds were examined by disk diffusion method. Water and ethanol extract from Scutellaria baicalensis revealed high antibacterial activities against Staphylococcus, Micrococcus, Enterococcus and Shigella. Our results suggest that the extract of Scutellaria baicalensis can be used a antibacterial agent against the antibiotic-resistant microorganisms.

• Journal of Veterinary Clinics
• /
• v.13 no.1
• /
• pp.74-76
• /
• 1996

A case of ovarian teratoma is reported in a 11-year-old female Korean Jindo dog. Grossly, the left ovary was markedly enlarged ($5{\times}4{\times}4 cm in size$) and contained several cystic spaces filled with hairs and yellowish, fragile deratinous material on cross section. Histological observation of the hair and keratin containing cystic structures lined by stratified squamous epithelium, mature adipose tissue, and bone and cartilage is compatible with a diagnosis of ovarian teratoma, pyometra was also present in this dog. This is believed to be the first report on canine ovarian teratoma in Korea.

• Journal of Veterinary Clinics
• /
• v.31 no.4
• /
• pp.341-343
• /
• 2014

A 6-year-old female, shih-tzu was presented in the February with bilateral, symmetrical hair loss and hyperpigmentation on caudal dorsolumbar region. Skin test and blood examination found no remarkable finding. Histopathological examination of biopsies from the alopecic lesions revealed follicular atrophy, infundibular hyperkeratosis and some follicles were twisted truncated and dilated. The diagnosis of recurrent flank alopecia was based on clinical signs and supportive histopathology. Treatment with oral melatonin was started at 3 mg twice daily for 80 days, and by this time complete hair regrowth was observed. The following year in the September, a small non-inflammatory alopecia developed in the same site. The dog was given oral melatonin at 3 mg twice daily for 4 weeks, hair had completely regrown.

• Environmental Sciences Bulletin of The Korean Environmental Sciences Society
• /
• v.2 no.2
• /
• pp.123-133
• /
• 1998

As the results of investigation, the noise level was between 60 dB and 80 dB in the area of explosion. The residents living within 1 Km would feel uncomfortable. However, hearing loss is not happened by this range. The maximum range that the human can hear is 20,000 Hz and the maximum range that the dog can hear is between 20 Hz and 40,000 Hz. The auditory range for humans to be uncomfortable toward noise is between 1,000 Hz and 2,000 Hz. As the result of this experiment, the auditory range of dog is more wide than of a human. The change of hair cells in the Corti's organ occurred when the dog was exposed to 1,000 Hz at 100 dB for 1 month. Therefore, the structure change of the ear could happen by hearing loss because of noise, but the structure change of hair cells is the worst symptom by hearing loss because of noise.

• Korean Journal of Veterinary Research
• /
• v.38 no.4
• /
• pp.823-828
• /
• 1998

This study was carried out to determine the causative agent and the clinical features of dermatophytosis occurred in 3 dogs from Tae-gu, Korea between 1996 and 1997. Specimens of hair and scale, collected from skin lesions were inoculated on potato dextrose agar and mycobiotic agar supplemented with thiamine and inositol. The agar plates were incubated at $25^{\circ}C$ for 2 weeks. Growing fungi isolated were identified by the morphological and growth characterization on bromocresol purple-milk solids-glucose medium, Christensen urea broth and trichophyton media, and by hair perforation tests. Skin lesions were observed in legs, abdomen, ears, face and head with alopecia of various sizes accompanied by itching and/or inflammation. The causative agent of dermatophytosis in the 3 dogs was identified as Microsprum gypseum and Trichophyton rubrum (mixed infection, dog 1), T rubrum (dog 2) and T raubitschekii (dog 3). The dermatophytosis by T rubrum and T raubitschekii was first found on animals in Korea.

• Journal of Veterinary Clinics
• /
• v.14 no.2
• /
• pp.361-364
• /
• 1997

The paper is to report a case of zinc-deficient parakeratotic hyperkeratosis in a dog. In this dermatosis, although an available diagnosis of zinc-deficient dermatosis is to analyse the serum or hair zinc Bevels, exact analysis of zinc is difficult and unreliable due to contamination of zinc by various environmental, physiologic and disease-related factors. Diagnosis may be performed by history, physical examination and blood chemical analysis. Laboratory evaluation revealed hypercholesterolemia and low activities of serum alkaline photophatase and total protein. The dog showed thick crusts at the elbows joint, stifle joint and testis. Zinc sulfate is administered per oral to patient with application of salicylic acid added vaseline ointment on hyperkaratic lesions. The dog is successfully cured.

• Korean Journal of Veterinary Research
• /
• v.51 no.4
• /
• pp.315-318
• /
• 2011

A dog (5.6 kg, 4-year-old, castrated male, Miniature pinscher) with diffuse symmetric alopecia on the chest and excessive scales was referred to Veterinary Medical Teaching Hospital of Chungnam National University, Korea. On physical examination, diffuse alopecia on ventral aspect of the neck and caudomedial thighs, and severe scales were presented. Dermatologic tests of lesions revealed bacterial infections. Histopathologically, atrophy of hair bulb was observed in the severely alopecic lesion of caudomedial thighs. ACTH stimulation test was performed to differentiate the endocrine disorder related to generalized alopecia. The pre-ACTH serum testosterone and progesterone concentrations were above normal ranges and the post-ACTH serum testosterone concentration was high. The pre- and post-ACTH serum estradiol and cortisol concentrations were within normal ranges. Canine pattern alopecia was diagnosed based on history, physical examination, hormonal assay and dermatohistopathologic examination. After 3 months of melatonin administration, multifocal alopecia on the trunk was improved and general hair regrowth was identified.