Journal of Physiology & Pathology in Korean Medicine
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v.24
no.1
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pp.134-142
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2010
Although BinSo-San(BSS), a mixed herbal formula consisted of 11 types of medicinal herbs and have been used as anti-inflammatory agent, In the present study, the acute toxicity (single oral dose toxicity) of lyophilized BSS aqueous extracts was monitored in male and female mice after oral administration according to Korea Food and Drug Administration (KFDA) Guidelines (2005-60, 2005). In order to observe the 50% lethal dose ($LD_{50}$), approximate lethal dosage (ALD), maximum tolerance dosage (MTD) and target organs, test articles were once orally administered to female and male ICR mice at dose levels of 2000, 1000, 500, 250 and 0 (control) mg/kg (body wt.) according to the recommendation of KFDA Guidelines (2005-60, 2005). The mortality and changes on body weight, clinical signs and gross observation were monitored during 14 days after dosing according to KFDA Guidelines (2005-60, 2005) with organ weight and histopathology of 12 types of principle organs. We could not find any mortality, clinical signs and changes in the body weights except for dose-independent increases of body weight and gains restricted in 1000 mg/kg of BSS extracts-dosing female group. Hypertrophic changes of lymphoid organs.thymus, spleen and popliteal lymph nodes were detectedat postmortem observation with BSS extracts dose-dependent increases of lymphoid organ weights, and hyperplasia of lymphoid cells in these all three lymphoid organs at histopathological observations. These changes are considered as results of pharmacological effects of BSS extracts or their components, immunomodulating effects, not toxicological signs. In addition, some sporadic accidental findings such as congestion spots, cyst formation in kidney, atrophy of thymus and spleen with depletion of lymphoid cells, and edematous changes of uterus with desquamation of uterus mucosa as estrus cycles were detected throughout the whole experimental groups including both male and female vehicle controls. The significant (p<0.01) increases of absolute weights of kidney and pancreas detected in BSS extracts 1000 mg/kg-treated female group are considered as secondary changes from increases of body weights. The results obtained in this study suggest that the BSS extract is non-toxic in mice and is therefore likely to be safe for clinical use. The LD50 and ALD of BSS aqueous extracts in both female and male mice were considered as over 2000 mg/kg because no mortalities were detected upto 2000 mg/kg that was the highest dose recommended by KFDA and OECD. In addition, the MTD of BSS extracts was also considered as over 2000 mg/kg because no BSS extracts-treatment related toxicological signs were detected at histopathological observation except for BSS or their component-related pharmacological effects, the immunomodulating effects detected in the present study.
The histological change of the billary mucosa in clonorchiasis is characterized as adenomatous hyperplasia, and cross-sectioned mucosa looks like intestinal mucosa. In addition to the glandular hyperplasla, the metaplasia of mucin secreting cells is also known. The present study investigated the presence of intestinal secretion from the biliary mucosal cells of rabbits and rats with Clonorchis sinensis infection. The rabbit was infected with 300 and the rat was infected with 100 metacercariae of C. sinensif. A part of the animals were followed up after praziquantel treatment. The rabbit livers were prepared for histochemistry to observe any endocrine secretion and the bile duct mucosa of the mice was processed far the activity of brush border membrane (BBM)-bound enzymes of the small intestine. Immunohistochemistry with the polyclonal antibodies and biotin-streptavidin-peroxidase staining kit showed no positive cells for gastrin and secretin, but a few cells were positive for serotonin. The proliferated billiw mucosa of the mice revealed no activity of dissaccharidases and aminopeptidase. Only alkaline phosphatase activity was found both in the control and the infected. The hyperplastic billary mucosal cells showed no gastrointestinal secretory functions. The serotonin secreting cells may be one of the inflammatory cells.
Suture microvascular anastomosis is time-consuming and tedious and demands long and continuous training. Techinique of anastomosis of microvessel was presented interrupted suture and continuous suture. Recently the unilink instrument system is created as a fast and simple method to achieve high patency rates without long and continuous training in the anastomosis of small vessels. The author experimentally studied the femoral artery of 20 mice(0.5-1.0mm, av. 0.7mm), the femoral vein of 20 mice(0.8-1.6mm, av. 1.2mm) after anastomosis with interrupted suture in 20 cases and continuous sutre in 20 cases. For the unilink apparatus we used the carotid arteries of 15 cases in 14 rabbits(1.0-1.6mm, av. 1.3mm) and facial veins of 12 cases in 14 rabbits(0.9mm-2.2mm, av. 1.5mm). A total of 27 arterial and venous anastomoses were performed. We examined the postoperative patency at immediate, 2 weeks, and 8 weeks. The results were as followings, 1. In the arterial anastomosis the rate of patency was 90%(18/20) in interrupted suture, 90%(18/20) in continuous suture and 93%(13/15) in unilink apparatus. In the venous anastomosis the rate of patency was 90%(18/20) in interrupted suture, 80%(16/20) in continuous suture and 100%(9/9) in unilink apparatus. 2. The mean time for completion of the arterial anastomosis were 12.2 minutes in interrupted suture group, 10.3 minutes in continouous suture group and 8.5 minutes in unillnk apparatus group. The mean time for completion of the venous anastomosis were 13.6 minutes in interrupted suture group, 11.0 minutes in continuous suture group and 6.2 minutes in unilink apparatus group. 3. At the histological examination of suture group, hyperplastic reaction of middle layer and subintimal hyperplasia were observed. In unilink apparatus group, the endothelium layer was continued and the thickness of vessel wall was decreased due to moderate atrophy of the media and mild degree of nonspecific chronic inflammation were seen around the unilink apparatus. 4. No significants was noticied in foreign body reaction among the interrupted, continuous and unilink apparatus group. 5. A case of the arterial anastomosis was released with acting out at 15 minutes after operation. 6. The important factors in the technical problems were accurate apposition of the cut vessel edges in suture group and the proper selection of the ring size and optimal fitting between two rings in unilink apparatus group. Even though the outer diamater of vessel in suture group was different from that in unilink apparatus group the unilink method provides a very safe, fast, and simple way to perform microvascular anastomoses especially in anastomosis of vein. But howerver suture was needed in vessels below 1 mm outer diamater. In that situation continuous suture was benefit than the interrupted suture in operation time.
A new nutritional disease has occurred among the hatchery-reared Korean bullhead fingerlings (Pseudobagrus fulvidraco) in the Chonbuk Province in September 1997. Diseased fish were all dead within 3-7 days, showing sluggish behavior, head up and tail down swimming. Most characteristic clinical signs were anaemia, clubbed and fused gill, skin desquamation. haemorrhage around the mouth and at the base of pectoral fins. Any causative bacteria and parasites were not isolated from the lesions and internal organs of the diseased fish. The hepatosomatic index, red blood cell count, hematocrit, hemoglobin and erythrocytes size of peripheral blood in the diseased fish were remarkably decreased compared with those of normal fish. In the histopathological observations, epithelial hyperplasia of the gill filaments initiated at the base of the gill was pronounced. This symptom was the characteristic appearence of all the diseased fish. A 0.6% saline bath and feeding a pantothenic acid-supplemented diet were conducted to decrease the mortality. Ten days after 0.6% saline bath or 25 days after feeding a pantothenic acid supplemented diet resulted in decreasing in the mortality. Microscopic appereance of the gill from the recovered fish was similar to that of the gill from healthy fish. These results indicate that the disease was caused by deficency of pantothenic acid in their diet and that 0.6% saline bath or supplementation of pantothenic acid in the diet was an effective way to decrease the mortality.
Kim, Yun-Min;Yoon, Joon;Byeon, II-kyun;Lee, Hoo-Min;Kim, Hyeong- Gyun
Journal of radiological science and technology
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v.38
no.4
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pp.437-442
/
2015
Accurate volume measurement of the prostate is a significant role in determining the result of diagnosis and treatment of benign prostate hyperplasia. The purpose of this study was to determine, when measuring prostate volume by TRUS, whether location is more accurately determined by transaxial or longitudinal scanning. With reference to the patient's image, it was produced six prostate model. It compares the actual volume and the measurement volume, and find the optimal measurement position of each specific model. Prostate volume measured by TRUS closely correlates with prostate phantom volume. There was no significant difference(p = .156). To measure the accurate volume of prostate with focal protrusion, its length should be measured exclude the protrusions.
Kim, Minjeong;Jeong, Ji Seong;Kim, Hyunji;Hwang, Seungwoo;Park, Il-Hyun;Lee, Byung-Chul;Yoon, Sung Il;Jee, Sun Ha;Nam, Ki Taek;Lim, Kyung-Min
Biomolecules & Therapeutics
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v.26
no.5
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pp.512-519
/
2018
Phthalates widely used in the manufacture of plastics have deeply penetrated into our everyday lives. Recently, a concern over the toxicity of phthalates on thyroid, has been raised but in most of cases, the doses employed were unrealistically high. To investigate the effects of phthalates on thyroid, we investigated the effects of the repeated oral exposure to low to high doses (0.3, 3, 30 and 150 mg/kg) di-2-ethylhexylphthalate (DEHP) from weaning to maturity for 90 days in juvenile rats on the thyroid. The histological examination revealed that DEHP significantly induced hyperplasia in the thyroid from the doses of 30 mg/kg, which was confirmed with Ki67 staining. In line with this finding, increased mRNA expression of thyrotropin releasing hormone (Trh) was observed in the thyroid of female at 0.3 mg/kg and 150 mg/kg as determined by RNAseq analysis. Moreover, significantly increased expression of parathyroid hormone (Pth) in the female at 0.3 mg/kg, and thyroglobulin (Tg) and thyroid hormone responsive (Thrsp) in the male at 0.3 mg/kg were noted in the blood, of which changes were substantially attenuated at 150 m/kg, alluding the meaningful effects of low dose DEHP on the thyroid hormone regulation. Urinary excretion of mono-2-ethylhexyl-phthalate (MEHP), a major metabolite of DEHP was determined to be 4.10 and 12.26 ppb in male, 6.65 and 324 ppb in female at 0.3 and 30 mg/kg DEHP, respectively, which fell within reported human urine levels. Collectively, these results suggest a potential adverse effects of low dose phthalates on the thyroid.
Objectives Hataedock is an orally administered herbal extract treatment for newborn babies that dispels toxic heat and meconium gathered by the fetus. The purpose of this study was to evaluate whether Hataedock alleviates inflammatory skin damage in AD (Atopic Dermatitis)-induced NC/Nga mice through regulating and maintaining the skin barrier and anti-inflammation effects.Methods We established an AD model in three-week-old NC/Nga mice through the repeated application of DNFB (dinitrochlorobenzene) on days 28, 35, and 42 after Hataedock treatment was orally administered. We identified changes in the skin barrier and anti-inflammation effects through the histological and immunohistochemical changes of TNF- α, NF-κB p65, iNOS, COX-2, and apoptotic bodies.Results Skin damage and angiogenesis were mitigated in the HT (Hataedock) group. Damage to the intercellular space of the stratum corneum as well as hyperplasia, edema, the infiltration of lymphocytes, and the increase of capillaries decreased in the HT group. Our results suggest that Hataedock treatment significantly down-regulated levels of TNF- α by 38% (p<0.001) and of NF-κB p65 by 70% (p<0.001). But Hataedock up-regulated apoptosis by 183% in dermatitis-induced skin.Conclusions These results suggest that Hataedock alleviates AD through diminishing the various inflammatory cytokines in skin lesions that are involved in the initial steps of AD development. It might have potential applications for the prevention and treatment of atopic dermatitis.
Min, Byung Hwa;Park, Mi Seon;Shin, Yun Kyung;Do, Yong Hyun;Myeong, Jeong-In
Korean Journal of Environmental Biology
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v.32
no.4
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pp.344-352
/
2014
The aim of the present study was to assess the effects of ammonia on physiological responses in Korean rockfish (Sebastes schlegeli). Interestingly, no mortality were observed when the specimens ($301.1{\pm}8.0g$) were exposed to five levels of un-ionized ammonia ($NH_3$) (control, 1, 2, 4, $8mg\;L^{-1}$) for 3 hours. Furthermore, a significantly higher increase in gill $Na^+/K^+$-ATPase (NKA) pump activity with was detected due to the ammonia exposure. The activity of the fishes were found to be 4 and $8mg\;L^{-1}$$NH_3$, which was significantly high compared to normal $1mg\;L^{-1}$$NH_3$. Although ammonia exposure had no effect on plasma $Cl^-$, exposure to both 4 and $8mg\;L^{-1}$$NH_3$, however it led to increase in the plasma $Na^+$, $K^+$ and osmolality levels. Also, prolong ammonia exposure cause increase of plasma cortisol and glucose levels. The increase in glucose was accompanied by an increase in cortisol. The fish exposed to 4 and $8mg\;L^{-1}$$NH_3$ showed significantly higher hematocrit than control group than those exposed to 1 and $2mg\;L^{-1}$$NH_3$. The intensity of cell damage increased with the increase concentration and exposure to ammonia. Furthermore, hyperplasia, separation and epithelial necrosis were also observed in gill tissues. Taken together, the results showed that direction of changes to the investigated parameters can be used to determine the physiological responses of Korean rockfish to ammonia.
Mongolian gerbil (Meriones unguiculatus) has been as an animal model for studing the neurological diseases such as stroke and epilepsy because of the congenital incompleteries in Willis circle, as well as the investigation of water metabolism because of the long time-survival in the condition of water-deprived desert condition, compared with other species animals. In order to accomplish the this research, first of all another divided the laboratory animals 5 groups of which each group include the 5 animals. In this study were investigated the histological structure in the kidney, measured the plasma osmolalities at the time of sacrifice of indivisual animals, and the body weights every day during water-deprived. The results obtained in this study were summarized as followings: 1. The body weights and decreasing rates of the body weight in water-deprived mongolian gerbil groups were continuosly decreased. 2. The plasma osmolalities were increased from the 5th water-deprived day, after then the gradually increasing reached nearly its equilibrium state at the 10th water-deprived day. 3. The urine volumes were abruptly decreased from the 2th water-deprived day, after then the gradually decreasing patterns were reached nearly its equilibrium state at the 10th day, and stopped the 11th day. 4. In the light microscopical observation of the kidney, glomerular capillary loop thickening, mesangial matrix increasing, sclerosis, glomerular cystic atrophy, interstitial fibrosis, tubular dilatation, mononuclear interstitial inflammation, interstitial mineralization, and hyperplasia of the collecting duct epithelium in the cortex area, were observed from the 10th water deprived day, and the lesions were gradually severe changed as the time lapse. 5. In the electron microscopical findings of the kidney, the degenerative changes of endothelial cell, podocyte and mesangial cell in glomeruli were initially observed on the 10th water-deprived day as well as the degeneration of microvilli and intracellular organelle in the renal tubules.
To know the features of Amyloodinium sp. parasitized in Black seabream, Acanthopagrus schlegeli, morphology and reproduction type of the parasite were investigated. Infection mode and histopathology of the parasites were also studied. In the developmental and morphological observation, the parasite passed through parasitic and non-parasitic phases with three developmental stages termed trophont, tomont, and dinospore. The trophont, 30-$80{\mu}m$ ovoidal or pyriform, for the vegetative stage had a spherical nucleus with $1.5{\mu}m$ in diameter, many food vacuoles and starch grains in cytoplasm. The tomont, 80-$90{\mu}m$ spherical, for the reproductive stage resorbed a stalk, secreted a cyst wall and reproduced within it. A dinospore, small 10-$15{\mu}m$ biflagellated, for the infestation stage had a stigma. The parasite was propagated for 15 days by serial passage in Korean rockfish (Sebastes schlegeli) at $25{\pm}1^{\circ}C$. Trophonts began to detach from the fish about 3 days after infection and was completed within 5 days at $25{\pm}1^{\circ}C$. It took from 3 to 5 days to reproduce at the same temperature. Reinfected fish showed that parasites penetrated under the epithelia of gill filament and gill lamellae causing hyperplasia and degeneration at infected area.
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