A form of polycystic ovary (PCO) resembling some aspects of the human PCO syndrome (PCOS) can be induced in rats by a single injection of estradiol valerate (EV). An increase in sympathetic outflow to the ovary precedes, by several weeks, the appearance of cysts, suggesting the involvement of a neurogenic component in the pathology of this ovarian dysfunction. To test the hypotheses that the change in sympathetic tone is related to an augmented production of hippocampal and/or ovarian nerve growth factor (NGF), and that this abnormally elevated production of NGF contributes to the induction of PCOS induced by EV. The animals were sacrificed after PCOS induction and the ovaries and hippocampus were sectioned and compared to the normal control. The expression of NGF was measured by immunohistochemical staining and Western blot analysis in the ovaries and hippocampus. EV-induced PCOS showed significant increase of ovarian NGF expression. Immunohistochemical expression of NGF was confined to the follicular cells and interstitial cells. Hippocampal NGF expression was not significantly changed. In conclusion EV-induced PCOS was related to the ovarian sympathetic activation which was mediated by NGF.
It has been well known that the splanchnic nerve block is effective for patients who suffer from intractable upper abdominal pain. However, it is unclear whether the effect of the splanchnic nerve block depends on varied alcoholic concentration. In this study, an attempt was made to use absolute ethanol on patients who recieved a splanchnic nerve block at Severance Hospital during the period from September l990 to April l991. The results are as follows; 1) Among the 33 patients, including 22 males and 1l females, the fifties and sixties were the major age groups. 2) Stomach cancer was the most common underlying disease(13 cases), with pancreatic can- cer next(9 cases). 3) The main locations of pain were the upper abdomen, epigastrium, and entire abdomen in decreasing order. 4) There were 17 cases who had had chemotherapy, and 1l cases of whom had had surgery before the splanchnic nerve block. 5) The volume of alcohol used was 12 ml bilaterally. 6) Among the 33 patients, 15.2% required a second block within two weeks of the first block. One case required a third block. 7) The most common complications of splanchnic nerve block were hypotension(33.3%), occasional transient sharp burning pain, flushing of face, pain on injection site, nausea, vomiting, dyspnea, chest discomfort and diarrhea. 8) The supplemental block most commonly used was a continuous epidural block. It was used both as a diagnostic block and to afford relief from pain before the splanchnic nerve block was done. 9) The interval between the receiving the absolute ethanol block and discharge was within 2 weeks in l5 cases. But, in the patients with poor general health, the interval between the splanchnic nerve block and discharge prolonged. The above results suggest that bilateral splanchnic nerve block done with absolute ethanol after an effective test block with 1% lidocaine under C-arm fluroscopic control is satisfactory and reliable. Still, 26.6% of the patients received a repeat block within 2 weeks. Insufficient spread of ethanol due to its small volume seems to be a major factor in the repeat block. Minimizing the incidence of repeat block remains a problem to be solved.
Objectives : To investigate effects of Achyranthis Radix aqua-acupuncture on adjuvant arthritis in rats. Methods : After eliciting arthritis in Sprague dawley(SD) rats by injection of Freund's complete adjuvant for 2 weeks, normal saline was injected for the Exp. I group and Achyranthis Radix aqua-acupuncture was injected for the Exp. II group during 30days. The selected point was Dokbi (ST35) in both groups. Then the edema rate, the number of WBC, the quantity of total protein, albumin and globuline in the blood serum, and histological test of the muscular tissue were measured in the arthritis stricken areas. Results : I) The volume of the paws were checked. The volume of the paws was $0.84{\pm}0.l4mm$ in the Exp. I group and $0.47{\pm}0.14mm$ in the Exp. IIgroup. The swelling of the paws was restricted significantly in the Exp. II group(P<0.05). 2) The number of WBC was $10.34{\pm}0.14(l03/ml)$ in the normal group and $37.47{\pm}5.46(103/ml)$ in the Exp. I group. It was $21.24{\pm}2.58(103/ml)$ in the Exp. II group. This fact showed that treatment with Achyranthis Radix aqua-acupuncture adminstered to the Exp. II group was more effective than the Exp. I group in the treatment of arthritis(P<0.05). 3) The content of the total protein in the blood serum was $6.14{\pm}43g/dl$ in the normal group, $7.95{\pm}0.94g/dl$ in the Exp. I group, and $6.41{\pm}0.68g/dl$ in the Exp. II group. There was no significance in total protein between the Exp. II group and the Exp. I group from the statistical analysis. 4) The content of albumin in the blood serum was $2.94{\pm}0.l3g/dl$ in the normal group, $2.01{\pm}0.48g/dl$ in the Exp. I group and $3.15{\pm}0.27g/dl$ in the Exp. II group, which revealed a significant increase in the serum albumin from the statistical analysis of the Exp. II group compared with the Exp. I group. 5) The content of the globulin in the blood serum was $3.19{\pm}$0.48g/dl in the normal group, $4.70{\pm}1.26g/dl$ in the Exp. I group and $3.26{\pm}0.57g/dl$ in the Exp. II group. There was no significance in the serum globulin between the Exp. II group and Exp. I group from the statistical analysis. 6) In histological findings, because of severe inflammatory reaction, remarkably irregular tissue and large amount of inflammatory cells were found in the Exp. I group. But the Exp. II group showed a small amount of inflammatory cells, the refrained inflammatory state and even recovering state. Conclusions : These results show that Achyranthis Radix aqua-acupuncture reduces the inflammatory reaction and muscular tissue necrosis in SD rat's paws induced by Freund's complete adjuvant.
Best-estimate thermal-hydraulic codes, CATHARE2 V1.2 and RELAP5/MOD3, hate been assessed against the BETHSY 6.2 tc six-inch cold leg break loss-of-coolant accident (LOCA) test. Main objective is to analyze the overall capabilities of the two codes on physical phenomena of concern during the small break LOCA i.e. two-phase critical flow, depressurization, core water level de-pression, loop seal clearing, liquid holdup, etc. The calculation results show that the too codes predict well both in the occurrences and trends of major two-phase flow phenomena observed. Especially, the CATHARE2 calculations show better agreements with the experimental data. However, the two codes, in common, show some deviations in the predictions of loop seal clearing, collapsed core water level after the loop seal clearing, and accumulator injection behaviors. The discrepancies found from the comprision with the experimental data are larger in the RELAP5 results than in the CATHARE2. To analyze the deviations of the two code predictions in detail, several sensitivity calculations have been performed. In addition to the change of two-phase discharge coefficients for the break junction, fine nodalization and some corrections of the interphase drag term are made. For CATHARE2, the change of interphase drag force improves the mass distribution in the primary side. And the prediction of SG pressure is improved by the modification of boundary conditions. For RELAP5, any single input change doesn't improve the whole result and it is found that the interphase drag model has still large uncertainties.
Shin, Eun Sil;Hwang, Onyou;Hwang, Yu-Shik;Suh, Jun-Kyo Francis;Chun, Young Il;Jeon, Sang Ryong
Journal of Korean Neurosurgical Society
/
v.56
no.5
/
pp.383-389
/
2014
Objective : Neural tissue transplantation has been a promising strategy for the treatment of Parkinson's disease (PD). However, transplantation has the disadvantages of low-cell survival and/or development of dyskinesia. Transplantation of cell aggregates has the potential to overcome these problems, because the cells can extend their axons into the host brain and establish synaptic connections with host neurons. In this present study, aggregates of human brain-derived neural stem cells (HB-NSC) were transplanted into a PD animal model and compared to previous report on transplantation of single-cell suspensions. Methods : Rats received an injection of 6-OHDA into the right medial forebrain bundle to generate the PD model and followed by injections of PBS only, or HB-NSC aggregates in PBS into the ipsilateral striatum. Behavioral tests, multitracer (2-deoxy-2-[$^{18}F$]-fluoro-D-glucose ([$^{18}F$]-FDG) and [$^{18}F$]-N-(3-fluoropropyl)-2-carbomethoxy-3-(4-iodophenyl)nortropane ([$^{18}F$]-FP-CIT) microPET scans, as well as immunohistochemical (IHC) and immunofluorescent (IF) staining were conducted to evaluate the results. Results : The stepping test showed significant improvement of contralateral forelimb control in the HB-NSC group from 6-10 weeks compared to the control group (p<0.05). [$^{18}F$]-FP-CIT microPET at 10 weeks posttransplantation demonstrated a significant increase in uptake in the HB-NSC group compared to pretransplantation (p<0.05). In IHC and IF staining, tyrosine hydroxylase and human ${\beta}2$ microglobulin (a human cell marker) positive cells were visualized at the transplant site. Conclusion : These results suggest that the HB-NSC aggregates can survive in the striatum and exert therapeutic effects in a PD model by secreting dopamine.
Lee Sang Won;Kim Sang Ho;Kim Tae Heon;Kang Hyung Won;Lyu Yeoung Su
Journal of Physiology & Pathology in Korean Medicine
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v.18
no.2
/
pp.507-516
/
2004
Alzheimer's disease(AD) is a geriatric dementia that is widespread in old age. In the near future AD will be the commom disease in public health service. Although a variety of oriental presciptions in study POD(Polygala tenuifolia extracted from dichlorometan) have been traditionally utilized for the treatment of AD, their pharmacological effects and action mechanisms have not yet fully elucidated. It has been widely believed that AP peptide divided from APP causes apoptotic neurotoxicity in AD brain. However, recent evidence suggests that CT105, carboxy terminal 105 aminoacids peptide fragment of APP, may be an important factor causing neurotoxicity in AD. SK-N-SH cells expressed with CT105 exhibited remarkable apoptotic cell damage. Based on morphological observations by phase contrast microscope and NO formation in the culture media, the CT105-induced cell death was significantly inhibited by POD. In addition, AD is one of brain degeneration disease. So We studied on herbal medicine that have a relation of brain degeneration. From old times, In Oriental Medicine, PO water extract has been used for disease in relation to brain degeneration. We were examined by ROS formation, neurite outgrowth assay and DPPH scravage assay. Additionally, we investigated the association between the CT105 and neurite degeneration caused by CT105-induced apoptotic response in neurone cells. We studied on the regeneratory and inhibitory effects of anti-Alzheimer disease in pCT105-induced neuroblastoma cell lines by POD. Findings from our experiments have shown that POD inhibits the synthesis or activities of CT105, which has neurotoxityies and apoptotic activities in cell line. In addition, treatment of POD(>50 ㎍/㎖ for 12 hours) partially prevented CT(105)-induced cytotoxicity in SK-N-SH cell lines, and were inhibited by the treatment with its. POD(>50 ㎍/㎖ for 12 hours) repaired CT105-induced neurite outgrowth when SK-N-SH cell lines was transfected with CT105. As the result of this study, In POD group, the apoptosis in the nervous system is inhibited, the repair against the degerneration of Neuroblastoma cells by CT105 expression is promoted. Decrease of memory induced by injection of scopolamin into rat was also attenuted by POD, based on passive avoidance test. Taken together, POD exhibited inhibition of CT105-induced apoptotic cell death. POD was found to reduce the activity of AchE and induced about the CA1 in rat hippocampus. Base on these findings, POD may be beneficial for the treatment of AD.
The cause of yield reduction in a collector well, which is located in Anseong-cheon watershed in Kyunggi province, is studied by using aquifer sediments' composition and hydraulic conductivity near four horizontal wells, no. 1, no. 4, no. 6, and no. 7 wells. During test-pumping periods, groundwater yield is reduced with a trend of $12.4m^3/d/d$ at no. 1, $2.3m^3/d/d$ at no. 4, $24.4m^3/d/d$ at no. 6, and $187.3m^3/d/d$ at no. 7 and no. 7 well shows the biggest reduction. The sediments along no. 7 horizontal well have low hydraulic conductivity and high coefficient of uniformity ($C_u$), and a deviation of $C_u$ along the well is also large. This characteristics can bring the fine particles' movement and make the openings filled. Additionally, high iron ($Fe^{2+}$) content results in a precipitation of iron hydroxides during pumping or injection and they can produce a clogging in sediments. In the future study, the analysis of physical and hydrochemical changes through a long-term pumping procedure will give a more exact interpretation for the cause of yield reduction.
Kwon, Ji Eun;Park, Ji Soon;Park, Hae Bong;Nam, Kyung Pyo;Seo, Hyuk Jun;Kim, Woo;Lee, Ye Hyun;Jeon, Young Dae;Oh, Joo Han
Clinics in Shoulder and Elbow
/
v.23
no.1
/
pp.3-10
/
2020
Background: The aim of this study was to evaluate clinical experience with arthroscopic debridement for septic arthritis of the shoulder joint and to report on our patient outcomes. Methods: The retrospective analysis included 36 shoulders (male:female, 15:21), contributed by 35 patients (mean age, 63.8 years) treated by arthroscopy for septic arthritis of the shoulder between November 2003 and February 2016. The mean follow-up period was 14.3 months (range, 12-33 months). An additional posterolateral portal and a 70° arthroscope was used to access the posteroinferior glenohumeral (GH) joint and posteroinferior subacromial (SA) space, respectively. Irrigation was performed with a large volume of fluid (25.1±8.1 L). Multiple suction drains (average, 3.3 drains) were inserted into the GH joint and SA space and removed 8.9±4.3 days after surgery. Intravenous antibiotics were administered for 3.9±1.8 weeks after surgery, followed by oral antibiotic treatment for another 3.6±1.9 weeks. Results: Among the 36 shoulders, reoperation was required in two cases (5.6%). The average range of motion achieved was 150.0° for forward flexion and T9 for internal rotation. The mean simple shoulder test score was 7.9±3.6 points. Nineteen shoulders (52.8%) had acupuncture or injection history prior to the infection. Pathogens were identified in 15 shoulders, with Staphylococcus aureus being the most commonly identified pathogen (10/15). Both the GH joint and the SA space were involved in 21 shoulders, while 14 cases involved only the GH joint and one case involved only the SA space. Conclusions: Complete debridement using an additional posterolateral portal and 70° arthroscope, a large volume of irrigation with >20 L of saline, and multiple suction drains may reduce the reoperation rate.
Journal of the Korea Academia-Industrial cooperation Society
/
v.21
no.2
/
pp.32-38
/
2020
This study summarizes test methods and evaluation methods for examining the thermal characteristics of Jeju-type ground heat exchangers (GHXs) installed on Jeju Island, and analyzes the ground temperature and thermal characteristics of ground heat exchangers installed in various regions by using thermal response tests (TRT). Jeju Island is composed of volcanic rock layers, and the groundwater flow is well developed. A Jeju-type GHX can be installed up to 30 m from groundwater level after drilling a borehole. The ground heat exchanger has a structure in which several pipes are inserted into the borehole. In order to examine the characteristics of the Jeju-type GHX, tests were conducted on ground heat exchangers installed in four places on Jeju Island (Pyoseon, Jeju, Namwon, and Hallym). As a result of the analysis of the Jeju-type ground heat exchanger, the ground circulating water temperature stabilized according to the heat injection, depending on the installed location, and was formed within one to three hours. The ground heat exchanger capacity in Hallym was highest at 73.4 kW (cooling) and 82.8 kW (heating), and the Jeju-type calculation was lowest at 34.1 kW (cooling) and 23.3 kW (heating).
Journal of Korean Society of Environmental Engineers
/
v.29
no.1
/
pp.62-67
/
2007
It was investigated to develop the technology for simultaneous removal of $SO_2/NO$ in flue gas using liquid homogeneous catalyst. Test was carried out using a bench scale and a pilot scale experiment. The investigation led to the following results: 1) Removal efficiency of $SO_2$ gas showed good results regardless of operating condition. Removal efficiency of NO gas, however, proportionally increased with higher packing height, lower concentration and larger injection rate of catalyst 2) The optimum design parameters for simultaneous removal of $SO_2/NO$ gas using Fe(II)-EDTA catalyst were as follow: HTU(height of transfer unit) = 0.5 m, liquid gas ratio = 20 $L/m^3$, NTU (number of transfer unit) = 3 stages, cross dimension of scrubber=0.025 $m^2$ 3) The removal efficiencies of $SO_2$ and NO were 95% and 81%, repletely. 4) The high HTU is advantageous on removal of the NO, but the excessive HTU diminishes operating efficiency. Consequently, it is important to decide the HTU of optimum.
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