Acute respiratory distress syndrome (ARDS) is a kind of acute lung injury characterized by inflammatory disruption of alveolar-capillary barrier and notorious for its high mortality. Neutrophils cause cell damage through the production of free radicals, inflammatory mediators, and proteases in ARDS. $PLA_2$ might serve a primary regulatory role in the activation of neutrophils. This present study was performed to elucidate the effect of rutin known as $PLA_2$ inhibitor on ARDS induced by endotoxin. Endotoxin had increased lung myeloperoxidase (MPO) activity, BAL (bronchoalveolar lavage) protein content, numbers of neutrophils in BALF (bronchoalveolar lavage fluid) compared with those of control rat (p<0.001). In addition, histological evidence of lung injury was correlated with neutrophil influx into alveolar space and cerrous perhydroxide granules were found in lining of endothelial cell, alveolar type I, II cells. In contrast, pretreated group of rutin had significantly decreased all of the parameters (p<0.001). These data suggest that inhibition of $PLA_2$ is one step approach that block the process of ARDS. Accordingly, we conclude that rutin can be used as the prophylactic agent for ARDS on the bases of these experimental results.
[ $\underline{Purpose}$ ]: This study identified the result of postoperative radiation therapy and the prognostic factors to affect survival rates in cancer patients. $\underline{Materials\;and\;Methods}$: One hundred and thirty three patients with cervical cancer who were treated with postoperative radiation therapy following surgery at our institution between June 1985 and November 2002 were retrospectively analyzed. One hundred and thirteen patients had stage IB disease, and 20 patients had stage IIA disease. Histological examination revealed 118 squamous cell carcinoma patients and 15 adenocarcinoma patients. Sixty seven patients were noted to have stromal invasion greater than 10 mm, and 45 patients were noted to have stromal Invasion 10 mm or less. Positive lymphovascular invasion was found in 24 patients, and positive pelvic lymph nodes were noted in 39 patients. Positive vaginal resection margin was documented in 8 patients. All of the patients were treated with external beam radiation therapy to encompass whole pelvis and primary surgical tumor bed. Intracavitary radiation therapy was added to 19 patients who had positive or close surgical margins. $\underline{Results}$: Actuarial overall and disease-free survival rates for entire group of the patients were 88% and 84% at 5 years, respectively. Five-year disease-free survival rates for patients with stromal invasion greater than 10 mm and 10 mm or less were 76% and 97%, respectively (p<0.05). Also there was a significantly lower survival in patients with positive pelvic lymph nodes compared with patients with negative pelvic lymph nodes (p<0.05). However, lymphovascular invasion, positive vaginal resection margins were not statistically significant prognostic factors. Addition of neoadjuvant chemotherapy or type of surgery did not affect disease-free survival. $\underline{Conclusion}$: Postoperative radiation therapy appears to achieve satisfactory local control with limited morbidity in cervical cancer patients with high pathologic risk factors. Distant metastasis was a dominant failure pattern to affect survival in cervical cancer patients after radical surgery and radiation and more effective systemic treatment should be investigated in these high-risk patients.
Reproductive cycle of natural population and artificial control experiments of gonadal development by the conditions of water temperatures-feeding and starvation of Ruditapes philippinarum were investigated by histological observations. The reproductive cycle of natural population in females and males can be categorized into five successive stages; early active (February to March), late active (April to May), ripe (April to August), partially spawned (May to October), and spent-inactive stage (August to March). In the artificial control experiments, gonadal development of this species was inhibited by the low water temperature (10$^{\circ}C$). In the experimental group which was exposed to artificial high water temperatures of 19$^{\circ}C$ and 22$^{\circ}C$, gonadal development was accelerated by the higher water temperatures and was faster (about one month) than that in natural populations. In the high water temperatures-feeding experimental group, the gonadal developmental phase was faster in the small-size group than that in the large-size group, and was faster in lower water temperature (10$^{\circ}C$)(p=0.01). The gonad developmental phases in the high water temperature (22-28$^{\circ}C$)-starvation experimental group showed faster (paired sample t-test, p=0.004) than those in the high water temperature-feeding group in females and males. In the high water temperature-feeding experimental group of female and male gonadal developments of small sized group were more sensitive than those in large sized group after 42 days cultivation, However, the gonadal development of male was more sensitive to the lower water temperature than female. On the whole, sexual maturation in the high water temperature experimental group was faster than those in the low water temperature group, and showed a significant difference (paired sample t-test, p=0.001) between female and male. In the starvation experimental group after 42 days, gonadal developments in the high water temperature-large male group showed faster than those in the high water temperature-large female group. However, in small size, gonad developmental phases showed the same pattern between feeding and starvation experimental groups. During the main spawning season, in the high water temperature-starvation experimental groups in females and males, their gonadal development showed faster than that in higher water temperature-feeding experimental group regardless of their sexes and individual sizes and showed a significant difference (paired sample t-test, p=0.004).
Objectives: The objective of this in vivo study is to observe the anti-osteoporotic activities of Gojineumja aqueous extracts (GJEJ) on the ovariectomized (OVX) mice as compared to those of risedronate sodium (RES). Methods: Thirty five days after bilateral OVX, GJEJ was orally administered, for 35 days once a day and then the changes on the body weight and gain during experimental periods, femur weights, bone mineral density (BMD), bone strength (failure load), mineral contents - calcium (Ca) and inorganic phosphorus (IP), histological profiles and histomorphometrical analyses at sacrifice were conducted with serum biochemistry - osteocalcin contents and bone specific alkaline phosphatase (BALP) activities. And the results of GJEJ were compared with RES orally administered OVX mice. Results: As a result of OVX, noticeable increase of body weight and gains and serum osteocalcin levels, decrease of serum BALP activities, femur weights, femur Ca and IP contents, BMD and strength were observed as compared to those of sham control mice, respectively. Also, the decrease of all histomorphometrical indices indicating the bone mass and structure, and the increase of indices about resorption were also detected in the femur of OVX control. However, these estrogen-deficient osteoporotic signs were significantly and dose-dependently inhibited by 35 days of continuous oral treatment of GJEJ, at dose levels of 500, 250 and 125 mg/kg, respectively. Especially, GJEJ 500 mg/kg showed favorable inhibitory activities against estrogen-deficient osteoporosis symptoms induced by OVX as comparable to those of RES 2.5 mg/kg. Conclusions: The results in this study suggest that oral administrations of GJEJ have clear dose-dependent favorable anti-osteoporotic activities in OVX mice.
This study was conducted to find out the effects of propylthiouracil and thyroxine on thyroid function and body growth in female rats. One hundred and forty-four female rats (Wistar-imamichi albino rats) of 25 days old were divided into 4 groups; thyroidectomy (Thx), propylthiouracil (PTU), thyroxine (Thyro.)and control (Cont.) groups. Thirty-six rats were allotted to each group, and changes of body weights were weekly checked. In addition, 6 rats in each group were sacrificed at 1, 2, 3, 5 and 6 weeks after treatments with time elapse for investigating changes of thyroid weights and tissues. The results obtained were as follows: 1. The weights of thyroid gland showed significant differences among all the compared groups at all observation times. The weights of thyroid glands in PTU group were higher than those in control group, but those in the Thyro. group were lower than those in control group. 2. In the histological changes of thyroid glands in the PTU group, the follicle epithelium showed columnar cells following hype trophy and hyperplasia from 1 week after treatment. The follicle epithelium in the Thyro. group were recognized inactive showing squamous cells. 3. The body weights showed significant differences among the compared groups from 2 weeks after treatment. The body weights decreased significantly in PTU and Thx. groups, while those in Thyro. group increased significantly in comparison with those in control group. No significant difference in body weight was noted between PTU and Thx. groups.
This study was performed to investigate the effects of chitosan-trimer (CT) on the prevention of postoperative adhesion formation in the rate model. All animals divided into PBS (control), 1% CT, 3% CT, and chitin treated group. The mean adhesion score in 1% CT group (1.03$\pm$0.63), 3% CT group (0.64$\pm$0.53) and chitin group (1.67$\pm$0.71) was found to be lower than that in control group (2.07$\pm$0.81). More favorable adhesion prevention was achieved in 3% CT group (0.64$\pm$0.53) in comparison with the control group, 1% CT group, and chitin group without any hemorrhagic complications. A statistically significant difference was observed in adhesion formation between control group and 3% CT group (p<0.001). In control group, 44 of 45 sites (97.7%) formed adhesions between the intestine defects. In contrast, 3% CT was effective in reducing the incidence of adhesion formation to 17 to 45 sites (62.2%) (p<0.05). The locations of adhesions were observed in serosa-serosa (60%), serosa-mesentery (13.3%), serosa-connective tissue of testis (10%), omentum-liver (10%), serosa-omentum (3.3%), serosa-cecum (3.3%), and serosa-incision (0%). On the results of histological analysis, grade of inflammation and fibrosis at the sites of postoperative peritoneal adhesion formation were not significantly different in all groups. But, 3% CT showed the lowest score of inflammation and fibrosis. In 3% CT group, the rate of increase of plasma fibrinogen was significantly lower compared with that in control group from pre-operation to 10 days later (p<0.05). There were no appreciable difference in the CBC, leukocyte differential counts and total protein concentrations among four groups. In conclusion, our data suggested that CT should be effective on reducing adhesion formation in experimental rat models. The results also showed that 3% CT does not adversely affect normal wound healing and healthy recovery after operation.
This study was designed to investigate the number of the growing and mature follicles following gonadotrophin treatments for superovulation in mature rats. Eighteen mature rats (Sprague-Duwely, initially 190~230gm) were randomly alloted into 3 groups. One group was control group, another FSH-treated group was injected intramuscularly with 0.5 units of follicular stimulating hormone (FSH) / rat, and third PMS and HCG-treated group was intramuscularly injected with 20~25IU of pregnant mare serum (PMS) / rat and then at the 48 hrs later, with 20~25IU of human chorionic gonadotrophin (HCG) / rat. The uteri and ovaries of rats were collected and then were observed grossly and serial sections of paraffin embedding ovaries were stained with H-E. Number of ovarian follicles by following 3 grades of large, middle and small follicles from secondary and tertiary follicles were investigated by LM photography of preparations. Small follicles were classified as secondary follicles of preantral follicles with more than 2 layers of granulosa cells surrounding the oocyte and middle follicles were classified as secondary follicles with early signs of antral cavity or with more than one small cavity on either side of the oocytes and large follicles were classified as tertiary follicles with a single medium sized antral cavity or large well-formed antral cavity. In gross findings, the uteri were slightly swelling in FSH-treated group and markedly swelling or filled with fluid in the uterine lumen in PMS and HCG-treated group. In histological findings, the shape and size of the follicles were diverse in middle and large follicles of FSH-treated group and PMS and HCG-treated group, and proportion of atretic follicles was increased in FSH-treated group and PMS and HCG-treated group than those in control group. The uteri of FSH-treated group and PMS and HCG-treated group were hypertropied or filled with fluid in the lumens and walls of uteri. The wall tissue layers were flattened and their blood and lymph vessels were dilated. The mean number of follicle per ovary in control group were appeared to be $17.1{\pm}5.6$($14.0%{\pm}4.6%$), $37.8{\pm}9.1$($30.9{\pm}7.4%$) and $67.6{\pm}30.1$($55.2{\pm}24.6%$) respectively at large, middle and small follicles and total number of these 3 grade follicles were appeared to be $122.5{\pm}40.0$. The mean number of follicle per ovary in FSH-treated group were appeared to be $22.8{\pm}7.0$($17.4%{\pm}5.3%$), $43.4{\pm}6.6$($33.2{\pm}5.1%$) and $64.5{\pm}13.0$($49.3{\pm}9.9%$) respectively at large, middle and small follicles and total number of these 3 grade follicles were appeared to be $130.7{\pm}16.6$. The mean number of follicle per ovary in PMS and HCG-treated group were appeared to be $29.7{\pm}11.0$($16.3%{\pm}6.0%$), $61.9{\pm}17.2$($33.9{\pm}9.4%$) and $91.1{\pm}28.2$($49.9{\pm}15.4%$) respectively at large, middle and small follicles and total number of these 3 grade follicles were appeared to be $182.6{\pm}32.7$. The above findings reveal that large follicles were increased 29.8% in FSH-treated group and 73.7% in PMS and HCG-treated group than those in control group and in histologic findings, proportion of atretic follicles were more increased in ovaries with more number of more developing follicles.
Purpose :This study was performed to find out the prognostic factors affecting local control in early glottic cancer treated with radiation therapy alone. Materials and Methods :We analysed 37 patients of histologically confirmed early glottic cancer treated at Chonnam National University Hospital between July Im and December 1995, retrospectively. Age of patients ranged from 30 to 73 years (median; 59 years). Thirty-five (95$\%$) patients were male. Histological type was all squamous cell carcinoma. According to the staging system of 1997 American Joint Committee on Cancer, 37 patients were restaged as follows: Tla; U (73$\%$), Tlb; 3 (8$\%$), 72: 7 (19$\%$). Radiation therapy was done using 6 MV X-ray of linear accelerator The range of total radiation dose delivered to the glottic lesion was between 5,040 cGy and 7,020 cGy (median; 6,600 cGy). Median follow-up period was U months. local control rates were calculated by Kaplan-Meier method. Generalized Wilcoxon test was used to evaluate the difference of control rates between comparable groups. Multivariate analysis using Cox proportional hazard model was done to find out prognostic factors affecting local control. Results:5 year survival rate of 37 patients was 89$\%$. Local control rate of 37 patients was 74$\%$ in 5 years. We included age, 7-stage, anterior commissure involvement, fraction size, total radiation dose, treatment time of radiotherapy as potential prognostic factors in univariate and multivariate analysis. As a result, treatment time had statistical significance in local control rate in both univariate (p=0.026) and multivariate (p=0.017) analysis. Complication was not recorded except one patient with hypothyroidism. Conclusion :This study revealed that overall treatment time of radiation was a significant factor affecting local control rate.
Ultraviolet (UV) induces photo aging, erythema, sunburn, photo-toxicity, photo-allergy, and skin tumor, To investigate photo-protective effects of AmorePacific Beauty-03 (APB-03; mixture of red ginseng extract powder and soybean extract powder) on UV-induced damaged skins, 40 SKH hairless female mice were orally administered APB-03 or saline five times a week and irradiated with UV three times per week far up to 12 weeks. Visible skin changes and skin damage in dermis and epidermis by replica image analysis and histological analysis. In APB-03-treated group, better skin, negative replica appearance and less wrinkle formation were observed compared to the UV control group. These results demonstrate oral administration of APB-03 have photo-protective effects on UV-damaged hairless mouse skin.
Kim, Yong-Hyun;Han, Kook-Il;Jeon, Mi-Ae;Kwon, Hyun-Jung;Park, Min-Kyung;Han, Man-Deuk
Microbiology and Biotechnology Letters
/
v.39
no.3
/
pp.281-286
/
2011
This study was performed to investigate the effects of salted and fermented shrimp ethanol extract (SFS) on serum lipid metabolism and hepatocytes in rats. Male Sprague-Dawley rats were administered 60% fat feed to induce hypercholesterolemia and were divided into five groups. Experimental groups were classified according to administered diet: normal diet group (NC), high cholesterol diet group (HC), high cholesterol and low dose shrimp extract (20 mg/kg) group (HC-SFSL), high cholesterol and high dose shrimp extract (200 mg/kg) group (HC-SFSH), and high cholesterol and lovastatin (20 mg/kg) group (HC-Lov). The experimental diets were fed ad libitum for 14 days. Compared with the control group, the serum cholesterol and triglycerides were 40.4 and 64.7% lower in the group fed HC-SFSH respectively. Low density lipoprotein (LDL)-cholesterol concentration in serum decreased in the HC-SFSH group compared with the HC group. In a histological assay, hepatocytes in the HC group showed that the vacuolated cells by fat appear clear due to the large amount of intracytoplasmic fat, whereas the liver hepatocytes in the group fed SFS effectively decreased fatty liver and intracytoplasmic fats. These results suggest that the extract of salted and fermented shrimp has an antiatherosclerotic effect and may lessen the effects of cardiovascular disease by reducing the cholesterol level in serum.
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