It was thought desirable to elucidate the influence of the mammillary bodies upon sexual behavior. Twenty male rats were used, of which 9 rats had their mammillary bodies damaged electrolytically through implanted electrodes (mammillary body group) and 11 rats received the same surgery short of electrolytic damage to the mammillary bodies (operated control group). Their sexual behavior was observed 3 weeks after surgery. Observation was discontinued when an ejaculation was followed by a successive intromission. 1. Mounting without intromission occurred significantly less often in the mammillary body group than in the operated control group. 2. No significant group difference existed with regard to the occurrence of mounting with intromission. However, the value tended to rise in the mammillary body group compared with the value of the operated control group. 3. Mountings with and without intromission tended to occure more often in the mammillary body group than in the operated control group, but the difference was nonsignificant. 4. The ejaculatory latency (time interval between the first intromission and the first ejaculation) and the postejaculatory interval (time interval between an ejaculatory act and the next intromission) tended to decrease in the mammillary body group compared with the values of the operated control group. However, again the difference did not reach significancy. 5. There existed no significant group differences with regard to the mounting latency (time interval between the first encounter with female and the first mounting with or without intromission), the intromission latency (time interval between the first encounter and the first intromission), and the interintromission period (mean time interval between two successive intromissions). From the above results, it may be inferred that the mammillary bodies tend to exert slight and nonsignificant inhibitory influence upon sexual behavior of male rats. However, further study is indicated before reaching final conclusion.
Objective: Pathogenesis of the endometriosis is very complex and the etiology is still unclear. Our hypothesis is that there may be some difference in gene expression patterns between eutopic endometriums with or without endometriosis. In this study, we analyzed the difference of gene expression profile with cDNA microarray. Methods: Endometrial tissues were gathered from patients with endometriosis or other benign gynecologic diseases. cDNA microarray technique was applied to screen the different gene expression profiles from early and late secretory phase endometria of those two groups. Each three mRNA samples isolated from early and late secretory phase of endometrial tissues of control were pooled and used as master controls and labeled with Cy3-dUTP. Then the differences of gene expression pattern were screened by comparing eutopic endometria with endometriosis, which were labeled with Cy5-dUTP. Fluorescent labeled probes were hybridized on a microarray of 4,800 human genes. Results: Twelve genes were consistently over-expressed in the endometrium of endometriosis such as ATP synthase H transporting F1 (ATP5B), eukaryotic translation elongation factor 1, isocitrate dehydrogenase 1 (NADP+), mitochondrial ribosomal protein L3, ATP synthase H+ transporting (ATP5C1) and TNF alpha factor. Eleven genes were consistently down-regulated in the endometriosis samples. Many extracellular matrix protein genes (decorin, lumican, EGF-containing fibulin-like extracellular matrix protein 1, fibulin 5, and matrix Gla protein) and protease/protease inhibitors (serine proteinase inhibitor, matrix metalloproteinase 2, tissue inhibitor of metalloproteinase 1), and insulin like growth factor II associated protein were included. Expression patterns of selected eight genes from the cDNA microarray were confirmed by quantitative RT-PCR or real time RT-PCR. Conclusion: The result of this analysis supports the hypothesis that the endometrium from patients with endometriosis has distinct gene expression profile from control endometrium without endometriosis.
The motor recovery mechanism of a 21-year-old male monoparetic patient with cerebral palsy, who had complained of a mild weakness on his right hand since infancy, was examined using functional Magnetic Resonance Imaging (fMRI) and Transcranial Magnetic Stimulation (TMS). The patient showed mild motor impairment on the right hand. MRI located the main lesion on the left precentral knob of the brain. fMRI was performed on this patient as well as 8 control subjects using the Blood Oxygen Level Dependent technique at 1.5 T with a standard head coil. The motor activation task consisted of finger flexionextension exercises at 1 Hz cycles. TMS was carried out using a round coil. The anterior portion of the coil was applied tangentially to the scalp at a 1.0 cm separation. Magnetic stimulation was carried out with the maximal output. The Motor Evoked Potentials (MEPs) from both Abductor Pollicis Brevis muscles (APB) were obtained simultaneously. fMRI revealed that the unaffected (right) primary sensori-motor cortex (SM1), which was centered on precentral knob, was activated by the hand movements of the control subjects as well as by the unaffected (left) hand movements of the patient. However, the affected(right) hand movements of the patient activated the medial portion of the injured precentral knob of the left SM1. The optimal scalp site for the affected (right) APB was located at 1 cm medial to that of the unaffected (left) APB. When the optimal scalp site was stimulated, the MEP characteristics from the affected (right) APB showed a delayed latency, lower amplitude, and a distorted figure compared with that of the unaffected (left) APB. Therefore, the motor function of the affected (right) hand was shown to be reorganized in the medial portion of the injured precentral knob.
Purpose: $^{99m}Tc$-macroaggregated albumin (MAA) hepatic arterial perfusion scintigraphy was known for useful method to evaluate patients receiving intraarterial chemotherapy for liver cancer. This study evaluate about usefulness of normal liver on hepatocellular carcinoma (HCC) from HCC patients. This study is to see the usefullness of Hepatic Arterial Perfusion Scintigraphy (HAPS) by measuring mass size, shape, lung shunting and tumor to normal ratio (T/N ratio) in relative blood stream of HCC patients compared with HCC on normal liver. Materials and Methods: From June 2009 to September 2009, HAPS studies were performed on 7 patients (men 6, women 1, mean 64) who were diagnosed HCC. HAPS was performed after proper hepatic artery $^{99m}Tc$-MAA of 5 mCi (185 MBq) injection by catheter. We performed anterior, posterior, both lateral view, SPECT of chest and abdomen. Then we set up ROI and calculated lung shunting, T/N ratio for each count, count/pixel (mean value). Results: Tumor and liver size analyzed by ROI of anterior, posterior view are 2.0-10.8 cm (mean 3.75 cm), 8.8-18.5 cm (mean 14.6 cm). T/N ratio analyzed by total tumor and total normal mean value are 2.41-5.76 (mean 3.8). lung shunting analyzed by total liver count is 3.14-13.92% (mean 6.77%). Conclusion: HAPS with $^{99m}Tc$-MAA can evaluate mass size, location, quantitative analysis through T/N ratio. also HAPS can evaluate detection of arteriovenous shunt through lung uptake before radioisotope therapy. Therefore HAPS with $^{99m}Tc$-MAA can be useful method in aspect of evaluation and treatment of HCC.
Yang, Ju Hee;Park, Min Hyuk;Shim, Jung-Yeon;Jung, Hye Lim;Park, Moon Soo;Keum, Dong Hyuck
Clinical and Experimental Pediatrics
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v.46
no.6
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pp.548-553
/
2003
Purpose : Matrix metalloproteinase(MMP)-9 is known to breakdown the blood-brain barrier by degrading the extracellular matrix of the subendothelial basement membrane in meningitis. Tissue inhibitor of metalloproteinase(TIMP)-1, a known inhibitor of MMP-9, has been postulated to inhibit the proteolytic activity of MMP-9 by bindng to MMP-9, but their interaction has not been fully understood yet. So far, there have been some reports on the relationship of MMP-9 and TIMP-1 in bacterial meningitis, but few reports in viral meningitis. Furthermore, there has been no report on this in Korea. We investigated the concentrations of MMP-9 and TIMP-1 in cerebrospinal fluid (CSF) and serum of patients with viral meningitis and control subjects, and evaluated their relationship with other clinical parameters of meningitis. Methods : CSF and blood were obtained from 25 subjects with viral meningitis and 14 control subjects. After centrifugation, supernatants were stored at $-20^{\circ}C$ and we assayed concentrations of MMP-9 and TIMP-1 by the sandwich ELISA method. Results : Concentrations of CSF MMP-9 and TIMP-1 were significantly elevated in patients with viral meningitis, when compared with those in control subjects. Their serum levels showed no differences between the two groups. MMP-9 levels were closely correlated with TIMP-1 levels in the CSF($r_s=0.42$, P<0.05). CSF MMP-9/TIMP-1 ratios were significantly higher in patients with viral meningitis than those in the control subjects(P<0.05). Both CSF MMP-9 and TIMP-1 levels positively correlated with CSF total leukocyte counts($r_s=0.43$, P<0.05, $r_s=0.48$, P<0.05). TIMP-1 levels positively correlated with total protein concentrations in the CSF($r_s=0.43$, P<0.05). Conclusion : MMP-9 and TIMP-1 may play an important role in the breakdown and maintenance of BBB in viral meningitis, respectively.
To investigate the effects of korean ginseng on the expression of transferrin receptor (TfR) in the liver cell membrane, we had carried out the experiments of $[^{3}H]thymidine$ uptake, $^{125}I-transferrin$ binding, and TfR mRNA expression in the liver after partial hepatectomy of normal and 3'-methyl-4-dimethylaminoa-zobenzene (3'-Me-DAB) treated rat with or without treatment of korean gingseng. $[^3H]thymidine$ uptake was not changed in the liver of 3'-Me-DAB or ginseng treated rat compared to that of control rat, but increased in that of partial hepatectomy of normal or 3'-Me-DAB treated rat. And this increased $[^{3}H]thymidine$ uptake was lowered slightly by the treatment of ginseng. Transferrin binding sites in the liver plasma membrane of ginseng treated rat with or without partial hepatectomy were similar, but increased in that of 3'-Me-DAB treated rat with or without partial hepatectomy compared to those of each control rat and these increased binding sites were reduced by ginseng treatment. Transferrin binding affinity (l/kd) was not changed by ginseng treatment, but tended to decrease in the liver of 3'-Me-DAB treated rat or in those after partial hepatectomy of all groups and reverse by ginseng treatment in 3'-Me-DAB treated rat. The expression of TfR mRNA was increased in the liver of 3'-Me-DAB treated rat with partial hepatectomy (peak at 24 hours), but lowered by ginseng treatment in this rat. From these results, it is suggested that korean ginseng has no effect on the increased expression of TfR with decreased affinity in the cell membrane of regenerated liver after partial hepatectomy of rat, but could inhibt that of 3'-Me-DAB treated rat through the regulation of DNA synthesis or TfR mRNA in partial.
Journal of the korean academy of Pediatric Dentistry
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v.31
no.1
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pp.11-18
/
2004
The eruption of permanent teeth represents the movement in the alveolar bone before appearance in oral cavity, to the occlusal plane after appearance in oral cavity, and additive movement after reaching th the occlusal plane. Tooth eruption is mostly controlled by genetic signals. The eruption stage is divided to preeruptive alveolar stage, alveolar bone stage, mucosal stage according to the process of growth and development. If the disturbance is occured in any stage of eruption, tooth does not erupt. The cause of eruption disturbance are ectopic position of the tooth germ, obstruction of the eruption path and defects in the follicle or PDL. In the treatment of eruption disturbance, surgical procedures are commonly used. There are three kind of surgical procedure ; surgical exposure, surgical repositioning, surgical exposure and traction Surgical exposure is basic procedure. This involves removal of mucosa, bone, lesion that are surrounding the teeth, dental sac when necessary to maintain a patent channel between the crown and the normal eruptive path into the oral cavity. To ensure this patency, many techniques including cementation of a celluloid crown, packing with gutta-percha or zinc oxide-eugenol, or a surgical pack, are used. When surgical exposure is conducted, operators should not expose any part of cervical root cement and not injure periodontium or root of adjunct tooth. After surgical exposure, tooth should be surrounded by keratinized gingiva. There is direct relationship between the extent of development of pathophysiologic aberrations and the intensity of the manipulative injury inflicted on the tooth by surgical treatment, so operator should consider this thing. In these cases, surgical exposure is conducted on Maxillary 1st milars that have a eruption disturbance and improve the eruption disturbance effectively.
Purpose: We assumed that an obese patient has a high rate of postoperative wounds, but there is no objective data showing the relationship between the body mass index (BMI) and the rate of postoperative wounds in Korea. We describe the relationship of BMI and rates of postoperative wound complications. Materials and Methods: From September 2005 to February 2006, 772 patients undergoing elective gastrectomy surgery due to gastric cancer were enrolled in a retrospective study to measure postoperative wound complications. A preoperative history, physical examination and daily progress notes were reviewed retrospectively from the medical records. Postoperative wound complications were detected from the elective medical record and from a doctor in charge statement. Results: The total number of patients was 772, the mean age of the patients was $57{\pm}11.2$ years and the sex ratio (male/female) was 1.82:1. Postoperative wound complication rates were different among the BMI groups (BMI < $20\;kg/m^2$ vs $20{\leq}BMI{\leq}25\;kg/m^2$ vs >$25\;kg/m^2$), and patients with a BMI>$25\;kg/m^2$ that underwent gastrectomy had a significantly higher wound complication rate (4.6%) than underweight and normal weight patients (0.9% and 1.6%, respectively) (P=0.038). Conclusion: Overall, there was a statistical correlation between BMI and the postoperative wound complication rate. Overweight (BMI>$25\;kg/m^2$) patients that underwent gastrectomy had a higher wound complication rate than normal body weight ($BMI{\leq}25\;kg/m^2$) patients. Further studies will be required with a larger population and prospectively designed study considering other factors that affect the wound complication rate.
As an abiotic stress, chilling stress is one of the major factors limiting plant growth and increasing susceptibility to pathogens. Therefore, enhancing stress tolerance in plants is an important strategy for their survival under unfavorable environmental conditions. The objective of this study was to determine the effects of the exogenous application of salicylic acid (SA) or nitric oxide (NO) on chilling tolerance in pepper seedlings. Pepper (Capsicum annuum L. 'kidaemanbal') seedlings were grown under normal growing conditions ($20/25^{\circ}C$, 15 hours photoperiod, $145{\pm}5{\mu}mol{\cdot}m^{-2}{\cdot}s^{-1}$, fluorescence lamps) for 23 days after transplanting. The solution (3 mL) of 1 mM SA and 0.3 mM NO with surfactant triton 0.1% were sprayed two times a week, respectively. Right after the completion of chemical application, seedlings were subjected to chilling condition at $4^{\circ}C$ for 6 hours under dark condition and then the seedlings were recovered at the normal growing conditions for 2 days. In order to assess plant tolerance against chilling stress, growth characteristics, chlorophyll fluorescence (Fv/Fm), and membrane permeability were determined after chilling stress imposition. Total phenolic concentration and antioxidant capacity were measured during the whole experimental period. Disease incidence for pepper bacterial spot and wilt was also analyzed. Pepper seedlings treated with SA or NO were maintained similar dry mass ratio, while the value in control increased caused by chilling stress suggesting relatively more water loss in control plants. Electrolyte leakage of pepper seedlings treated with SA or NO was lower than that of control 2 days after chilling treatment. Fv/Fm rapidly decreased after chilling stress in control while the value of SA or NO was maintained about 0.8. SA increased higher total phenolic concentration and antioxidant capacity than NO and control during chemical treatment. In addition, increase in total phenolic concentration was observed after chilling stress in control and NO treatment. SA had an effect on the reduction of bacterial wilt in pepper seedlings. The results from this study revealed that pre-treatment with SA or NO using foliar spray was effective in chilling tolerance and the reduction of disease incidence in pepper seedlings.
Ahn, Hye Mi;Jung, Sun Ok;Kwon, Jung Hyun;Hong, Young Mi
Clinical and Experimental Pediatrics
/
v.53
no.1
/
pp.72-79
/
2010
Purpose: Left ventricular (LV) hypertrophy and impaired diastolic function may occur early in systemic hypertension. Diastolic dysfunction is associated with increased cardiovascular risk. Tissue Doppler imaging (TDI)-derived tissue velocity and strain rate are new parameters for assessing diastolic dysfunction. The aim of this study is to determine whether TDI and strain rate imaging (SRI) would improve the ability to recognize early impaired diastolic and systolic functions compared with conventional echocardiography in hypertensive adolescents. Methods: We included 38 hypertensive patients with systolic blood pressure above 140 mmHg or diastolic blood pressure above 90 mmHg. Ejection fraction and myocardial performance index (MPI) were estimated by conventional echocardiography. Peak systolic myocardial velocity, early diastolic myocardial velocity (Em), and peak late diastolic myocardial velocity (Am) were obtained by using TDI and SRI. Results: In the hypertensive group, interventricular septal thickness was significantly increased on M-mode echocardiography. Em/Am was significantly decreased at the mitral valve annulus. Among hypertensive subjects, the E strain rate at basal, mid, and apex was significantly decreased. Systolic strain was significantly decreased at the septum in the hypertensive group. Conclusion: Strain rate might be a useful new parameter for the quantification of both regional and global LV functions and could be used in long-term follow up in hypertensive patients. Early identification by SRI of subjects at risk for hypertensive and ventricular dysfunction may help to stratify risk and guide therapy. Further studies, including serial assessment of LV structure and function in a larger number of adolescents with hypertension, is necessary.
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