• Korean Journal of Plant Tissue Culture
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• v.24 no.5
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• pp.263-268
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• 1997

Effects of plant growth regulators and condition on shoot induction from internode explants of Actinidia arguta were investigated. Optimal condition for shoot induction was obtained when internode explants were cultured on MS medium containing 3.0 mg/L zeatin. The frequency showed about 62.5% under darks condition at 27$^{\circ}C$ after 6 weeks of culture. Regenerated shoots were rooted on WPM medium supplemented with 0.5 mg/L NAA and the regenerants were acclimated to an artificial soil with mixture (perlite : vermiculite = 1:1, v/v) for further growth and successfully transplanted to the soil in a highly humidified greenhouse. Histological observations revealed that meristemoids were formed from small and isodiametric cells, and then developed to shoot primordia.

• Journal of Veterinary Clinics
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• v.24 no.2
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• pp.114-118
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• 2007

The objective of this study was to investigate the effects of implanted chitosan applied to surgically created wound in pigs. Six healthy $2{\sim}3$ months old Landrace and Yorkshire mixed breeds of both genders were used. A 2 cm straight skin incision was made and undermined skin ($2{\times}2cm$) over on the each pig's both sides of dorsal midline at 0, 7. 14 and 18 days. One wound (left side) was implanted 0.4 mg of cotton type chitosan and other wound was treated saline (3 ml). Each wound was closed with two interrupted suture of 2-0 sutures. The wounds created at 18, 14.7 and 0 days were named post-wounding day (PWD) 3, 7, 14 and 21, respectively. At 21 days after initial wounding, each wound was taken for histological observations. Reepithelialization tended to be greater in the chitosan group than in the control group at PWD 3 and 14. Granulation tissue formation did not show especial differences in two groups. Number of inflammatory cells was lesser statistically in level in the chitosan group than those in the control group at 21 days after wounding (p<0.05). Fibroblasts and neovasculature tended to be greater in the chitosan group than in the control group at PWD 3 and 7, and tended to be lesser in the chitosan group than in the control group at PWD 14 and 21. Collagen and fibrin were observed to be evenly distributed around the wound in the chitosan group. But collagen and fibrin were observed to be converged along the wound in the control group.

• Korean Journal of Plant Tissue Culture
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• v.22 no.4
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• pp.229-234
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• 1995

Anthers of hybrids and inbred lines of Chinese cabbage (Brassica campestris ssp. pekinensis) were inoculated on the modified solid or liquid B$_{5}$ medium after several pre-treatments. Anthers were then maintained at 25 $^{\circ}C$ after being subjected to various post-treatment. Somatic embryos began to appear 9 days after inoculation and ended at 13th days. Low temperature pre-treatment did not increase embryoid production whereas high post-treatment temperature of 4$0^{\circ}C$ or 45$^{\circ}C$ enhance the production. There were considerable levels differences in embryogenesis between lines used, but not between the culture methods. Somatic embryo yield was also increased by subjecting anthers to one day at 35$^{\circ}C$ and then another one day at 3$0^{\circ}C$ after plating. Histological observations showed several stages in haploid development ranging from a few celled to large multiple-celled embryoids.s.

• Journal of Physiology & Pathology in Korean Medicine
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• v.20 no.4
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• pp.985-991
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• 2006

In the present study, the anti-inflammatory effect of Haepyoeiin-tang plus Antler water extract water extract was tested in Xylene-Application mouse ear acute inflammation model. The test articles were once dosed before Xylene-Application, and the changes on Dody weight and weights and histopathological observation of induced ear were conducted with ear histomorphometry, The increases of absolute and relative ear weight detected in vehicle control compared to that of sham, were significantly and dose-dependently inhibited by Haepyoejin-tang plus Antler in the present study, A classic acute inflammatory histological changes such as subcutaneous edema, hypertrophy and infiltration of inflammatory cells, was detected in vehicle control. However, these histological changes were significantly and dose-dependently inhibited by Haepyoeiin-tang plus Antler. In addition, the increases of ear thickness half and thickness full detected in the vehicle control, were also dose-dependently decreased in the all Haepyoeiin-tang plus Antler-dosing groups. Base on these results, it is concluded that Haepyoeiin-tang plus Antler water extracts have a clear anti-inflammatory effect on the acute inflammation. However, somewhat lower anti-inflammatory effects were detected in Haepyoeiin-tang plus Antler water extracts compare to that of Dethamethason and Dicrofenac. About 500 mg/kg of Haepyoeiin-tang plus Antler water extracts have similar effect compared to that of Dicrofenac 15 mg/kg.

• Journal of Physiology & Pathology in Korean Medicine
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• v.20 no.4
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• pp.875-881
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• 2006

In the present study, the anti-inflammatory effect of 'Jungcheonhwadamgangki -tang' water extract was tested in Xylene-Application mouse ear acute inflammation model. The test articles were once dosed before Xylene-Application, and the changes on body weight and ear weights and histopathological observation of induced ear were conducted with ear histomorphometry. The increases of absolute and relative ear weight detected in vehicle control compared to that of sham , were significantly and dose-dependently inhibited by Jungcheonhwadarn -gangki-tang in the present study. A classic acute inflammatory histological changes such as subcutaneous edema, hypertrophy and infiltration of inflammatory cells, was detected in vehicle control. However, these histological changes were significantly and dose-dependently inhibited by Jungcheonhwadam-gangki-tang. In addition, the increases of ear thickness half and thickness full detected in the vehicle control, were also dose-dependently decreased in the all Jungcheonhwadamgangki-tang-dosing groups. Base on these results, it is concluded that Jungcheonhwadamgangki-tang water extracts have clear anti-inflammatory effect on the acute inflammation, and about 500 mg/kg of Jungcheonhwadamgangki-tang water extracts have similar effect compared to that of Dicrofenac 15 mg/kg.

• The Korea Journal of Herbology
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• v.31 no.6
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• pp.63-71
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• 2016

Objective : To suggest a scientific evidence of Aconitum carmichaeli Debx. (Aconiti Lateralis Radix Preparata: ALRP) as one of cooling and heating medicines on the regulation of body temperature, we investigated the effects of ALRP water extract on hypothyroidism. Methods : Hypothyroidism was induced by intradermal injection with PTU for 4 weeks in SD rats. ALRP extract or L-thyroxine as a control drug was orally administrated for 2 weeks with PTU injection in rats. The physiological and serological parameters were measured in rats. The histological change of thyroid tissues was observed by H&E staining, and also the expression of thermo-regulating proteins was determined by Western blot in dorsal root ganglia and brain tissues of rats. Results : The administration of ALRP extract in PTU-induced hypothyroidism rats was significantly increased body temperature, but did not changes on body weight, food and water intake. ALRP extract did not effect on the levels of TSH and T4 in the hypothyroidism rats. ALRP extract significantly decreased the levels of GPT, glucose, HDL-cholesterol, LDL-cholesterol, and total cholesterol in the hypothyroidism rats. In histological observation, the enlarged epithelium and atrophic follicles with higher concentration of follicular cells on hypothyroidism were improved by ALRP extract. In addition, ALRP extract increased the expression of TRPV1 and TRPM8 ion channel proteins in hypothyroidism rats. Conclusion : These results indicate that ALRP extract can improve PTU-induced hypothyroidism through regulation of body temperature and lipid accumulation. The action mechanism of ALRP extract is related with body temperature control by thermoregulation with TRP ion channels.

• The Korean Journal of Oral and Maxillofacial Pathology
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• v.42 no.5
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• pp.145-152
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• 2018

A 57 years old female complained of severe pain on the right temporomandibular joint (TMJ) area. Her right condyle had been partly resected under surgical operation 13 years ago due to condyle hypertrophy, thereafter she felt dull pain on TMJ area and recently the lesion became severely swelled and painful leading to cancer phobia. The present radiological views showed slightly enlarged and sclerosed condyle with increased radiopacity, but its articular sliding function was almost disable during mouth opening. The patient's TMJ lesion was carefully managed with conservative physiotherapy and pain treatment. The microsection of condyle head obtained from the previous operation was re-evaluated histologically, and it was finally diagnosed as osteochondrosis dissecans (OCD), exhibiting hyperplastic proliferation of cartilage in condyle head and marked vascular dilatation in epiphyseal zone. This abnormal cartilage tissue was distinguishable from normal cartilage tissue found in the peripheral cartilaginous cap of the same microsection. The involved cartilage cap showed thick hypertrophic chondrocyte zone with horizontal and vertical clefts accompanying diffuse hyaline degeneration. The superficial fibrous zone of cartilage cap was thickened and frequently peeled off, while lower hypertrophic zone of cartilage cap was highly cellular and proliferative. Consequently, the endochondral ossification became aberrant and resulted pre-mature apoptosis of many hypertrophic chondrocytes, followed by diffuse and mild inflammatory reaction in the underlying marrow tissue. Therefore, it was suggested that this hypertrophic condyle lesion, OCD, be differentiated depending on radiological and histological features from ordinary condyle hyperplasia, osteochondroma, and osteoarthritis, and that the pathological confirmation of OCD may provide a reliable modality for dental and medical treatment of chronic and painful TMJ lesion.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.55 no.5
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• pp.533-540
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• 2022

We evaluated a worm-based extruded pellet diet with black soldier fly Hermetia illucens larvae (BSF) meal and BSF oil for olive flounder Paralichthys olivaceus through field feeding experiments at a commercial aquafarm. We prepared two experimental diets by replacing fish meal and fish oil with BSF meal and BSF oil (BEP-1, BSF meal 7%, BSF oil 1%) and (BEP-2, BSF oil 2%), respectively. We prepared raw-fish based moist pellets (MP) for comparison between the two experimental diets. We distributed the olive flounder (220±6.29 g) in square (10 m×10 m×1 m) concrete, 100 ton tanks at a density of 1,600 fish per tank (n=3) in triplicate for each dietary treatment. We fed the diets to the fish to apparent satiation for 7 months. At the end of the feeding trial, we found no substantial differences between the groups in terms of growth performance, survival, or feed utilization. None of the diet groups showed any changes in either hematological or non-specific immune responses. The histological observation of the intestine showed that the goblet cell number and cholecystokinin-producing cell activity increased in the fish fed the BEP diet compared with the those of the fish fed the MP diet. These results indicated that dietary BSF meal and oil can be used for olive flounder without compromising growth or, hematological and histological parameters.

• Korean Journal of Fisheries and Aquatic Sciences
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• v.54 no.6
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• pp.1000-1006
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• 2021

The maturity and spawning of the common octopus Octopus vulgaris were studied using 317 samples collected monthly from January to December of 2020 from the coastal waters of Yeosu, Korea. The mantle length (ML) of O. vulgaris ranged from 5.1 to 19.7 cm and body weight (BW) ranged from 117.6 to 3,645.4 g. We analyzed monthly changes in sex ratio, gonadosomatic index (GSI), histological maturity stage, and body weight at 50%, 75% and 97.5% group maturity. The sex ratio was 1:1.02, which was not significantly different from the value that expected. Based on histological observation of the gonad development and gonadosomatic index, the spawning periods lasted throughout the year, with peak spawning periods estimated from March to April and July to August. The percentages of sexually mature females estimated using a logistic equation were over 50% at 554.46 g BW, 75% at 1,134.38 g BW and 97.5% at 2,474.22 g BW respectively.

• Journal of Animal Reproduction and Biotechnology
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• v.37 no.4
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• pp.276-284
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• 2022

Endocrine-disrupting chemicals found in many commercial products may interfere with the normal functioning of the endocrine system and are unsafe because of their cumulative effect on the human body. However, little is known about the effects of combinations of endocrine-disrupting chemicals in humans. Methoxychlor and bisphenol A are toxic to male reproductive organs. Therefore, we studied the effects of methoxychlor and bisphenol A on male reproductive function. Male mice were divided into four treatment groups: control, 400 mg methoxychlor, 1 mg bisphenol A, and 400 mg methoxychlor + 1 mg bisphenol A/kg/day. Methoxychlor and bisphenol A were dissolved in sesame oil and acetone and administered orally for 4 weeks. After administration, the weight and histological changes in the testicles and epididymis, sperm count and health were observed biochemical tests and whole blood counts were performed. The results showed that the mice in the bisphenol A and methoxychlor + bisphenol A groups gained more weight than those in the control and methoxychlor group. The weights of the testes and epididymis were higher in the experimental groups than in the control. Sperm motility and progression were significantly reduced in the bisphenol A and methoxychlor + bisphenol A groups. Histological observation showed a reduced number of sperm, smaller seminiferous tubules, and destroyed lumen in the methoxychlor + bisphenol A group compared to the other groups. In conclusion, our study showed that methoxychlor and bisphenol A destroy male reproductive tissues and decrease sperm quality.