How does $CO_2$ affect on the stomatal mechanism? The mechanism of stomatal opening by $CO_2$ is not clear as it is difficult to see $CO_2$ effect on light-induced stomatal opening. Furthermore, stomata may react differently according to the concentration of $CO_2$. The significance of the possible endogenous rhythms must consider to understand on $CO_2$-related response. It is clear that $CO_2$ has an effect on the accumulation of osmotic materials which determines the degree of stomatal apertures because it is known that stomata open in the condition of the reduced $CO_2$ concentration. However, it is not fully understood how $CO_2$ leads to the stomatal opening. It has been thought that $CO_2$ can not affect on the ion fluxes which determines the increase of osmotic potential in guard cells. However, in this study, the changes of guard cell membrane permeability by $CO_2$ have been focused on. There are many reports that $CO_2$ related reactions are dominant when the leaf is exposed to certain a mount of $CO_2$. The hypothesis of the stomatal opening by light is based on the increase of osmotic materials in guard cells including $K^+$, $Cl^-$, sucrose and $malate^{2-}$. It was reported that $CO_2$ induced a big hyperpolarization indicating that $H^+$ was extruded to the cell outside. It was also found that $CO_2$ caused guard cell membrane hyperpolarization in the intact leaf up to 3 or 4 times higher than that of light induced membrane hyperpolarization. These results represent that $CO_2$ can affect on the change of physical characteristics which affects on the change of the membrane permeability.
Journal of agricultural medicine and community health
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v.13
no.1
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pp.41-59
/
1988
In many of the helminthic infections, diagnosis is accomplished by the demonstration of the eggs or, occasionally the adult worms or their parts. Diagnosis can be made by the identification of larval stage obtained from stool or surgically extracted materials too. However some kinds of parasitic disease can not be diagnosed by above mentioned procedure alone. Brain cysticercosis, ectopic paragonimiasis, Capillaria hepatica infection in liver is a good example. In such a case, immunologic method would be helpful for the decision of physician. In this paper, immunologic tools such as indirect hemagglutination test, indirect fluorescent antibody test, circumoval precipitation test, ELISA, western blot were applied for the diagnosis of Clonorchis sinenisis, Cysticercosis and C. hepatica a infection and their efficacy was evaluated. The results obtained were as follows ; 1) In the diagnosis of clonorchiasis, ELISA revealed sensitiveity of 83.3%, but cross reaction against antibody of Paragonimus westermani and Taenia species were observed. For the identification of cross reaction and species specific band of Ag-Ab reaction, western blot was applied. 59Kd relative molecular weight and 21Kd band were identified as a Clonorchis sinensis specific band. OD values of ELISA performed with sera of 18 months after praziquantel treatment decreased to half level compared to that of before treatment. Negative conversion rate of ELISA after 18 months of treatment was 60%. 2) In the diagnosis of cysticercosis, IFAT disclosed 95.8%(23/24) of sensitivity and reaction was most strongly occurred in inner membrane. ELISA revealed 90.0% (36/40) of sensitivity, but cross reaction was observed in both technique. In western blot, 91, 63 and 21Kd Mw bands were identified as a strongly positive band. Among them 63Kd band showed positive reaction against almost all sera of cysticercosis patient. 3) Circumoval precipitation, ELISA, IFAT, showed 85.0% of sensitivity in the diagnosis of C. hepatica infection in rat. The antigenic localities were inner membrane of sectioned egg antigen on the prectipitates around the mucoid plugs which were induced by circumoval precipitation reaction. Sera from rats infected with 2000eggs were collected periodically to observe the changing patterns of antibody titers by IFAT and ELISA, which showed that high titers were detected at weeks 3 and 5, then gradually declined through weeks 9until to negatively converted at weeks 13.
The object is that this research searches the relationship of the office given condition actual condition of the country important facility private security guard and job satisfaction degree. In order to grasp and analyze the real state of the country important facility private security guards directly, the questionnaire, that is the general measurement tool, was utilized and the guard whom it works in the airport, the port region and general work place, that is the national important facility of Busan and Ulsan area, was aimed at. The enough survey object was illustrated to the facility and person in charge in the security company and the item was previewed and the total 400 sheets was distributed and 331 sheets (82.8%) except the doubleness subject intention and incongruent questionnaire was utilized for the analysis. The statistic processing of collected data utilized the SPSS version 15.0 the statistical package program through data coding and cleaning process and performed the frequency analysis, reliability analysis, t-test, one way analysis of variance, Pearson analysis, and regression analysis. The relationship of the office given condition actual condition of the guard about the national important facility and job satisfaction degree was classified into the interpersonal relationship, task characteristic, office environment, and complement factor and the difference of the job satisfaction degree according to the general characteristic was verified. If the conclusion obtained through the method of study described in the above looked at, for as to general tendency, the low wages and poor field environment was continued. In the general characteristic, the man was higher than the excitation about the job satisfaction level. As there was lots of the age and the scholarship was low, the age was high. And as there was lots of the career and income, the police of a petition or search and guide staff was high and the job satisfaction degree in which relatively the employee and the other job group is high so that the case of being the former student incidence can be the poorest was shown rather than the facility security agent. As the interrelation analysis result job satisfaction was high, the change of occupation pseudo was low and the organizational commitment degrees was increased. The regression analysis result job satisfaction degree was exposed to reach the meaningful effect on the change of occupation pseudo and organizational commitment. It had an effect on the change of occupation pseudo as the task characteristic and office ambient level was low. It had an effect on the organizational commitment as the extend of satisfaction about the task characteristic and interpersonal relationship, complement, and office ambient level were high. If the research result of this time is integrated, the support of the political system including the interpersonal relationship thesis between top and bottom of the organized I and substantial complement actualization is urgently needed between the office given condition improvement effort in the country important facility defense manpower field and police of a petition and special guard.
An, Jin Young;Lee, Jang Eun;Park, Hyung wook;Lee, Jeong hwa;Yang, Seung Ah;Jung, Sung Soo;Kim, Ju Ock;Kim, Sun Young
Tuberculosis and Respiratory Diseases
/
v.60
no.5
/
pp.532-539
/
2006
Background : The incidence of pulmonary tuberculosis has been reducing, but endobronchial tuberculosis continues to be a signigicant heath problem. We performed prospectively bronchoscopy in patients diagnosed with pulmonary tuberculosis in order to evaluate the frequency of endobronchial tuberculosis and its related findings. Follow-up bronchoscopy was also performed after treatment to evaluate the incidence of endobronchial complications such as stenosis and remaining lesions. Methods : From January, 1999 to December, 2003, bronchoscopy was performed on patients newly diagnosed with pulmonary tuberculosis. Results : 458 patients were enrolled in this study, out of 699 patients with pulmonary tuberculosis from 1999 to 2003. 234(51%) had endobronchial tuberculosis. The frequency was 40.3% in males and 66.3% in females, The most common symptom was nonspecific cough and sputum, and the main radiologiy finding was patchy infiltration. The most common subtype of endobronchial tuberculosis was the edema-hyperemic form. The right lung was involved more frequently than the left, and the left upper lobe was the most commonly involved site. 58 patients underwent follow-up bronchoscopy and most of been cured without major sequels. However, 8 patients had a stenosis of trachea and main bronchus, and 6 patients had still had endobronchial lesions. Therefore the treatment was prolonged for 3 months. Conclusion : Endobronchial tuberculosis of pulmonary tuberculosis has been remained of high incidence. bronchoscopic and follow-up bronchoscopy examination needs to evaluate the incidence of endobronchial tuberculosis and its related findings and major complication despite of treatment.
This retrospective study was designed to evaluate the prognostic value and histologic correlation of sonography in childhood nephrotic syndrome. Sixty-nine patients with proteinuria over 2g per day at the time of presentation who were treated at the Korea University Hospital were included in this review. They were 1 to 15 years old(mean age, 7.8 years) with 49 males and 20 females. In each patient an ultrasound examination was done using SPA 1000(Diasonics, C.A., U.S.A.) on admission. Tissue specimens were obtained from 46 patients. The paraffin-embedded specimens were reviewed with special reference to interstitial edema, interstitial fibrosis, tubular atrophy, global sclerosis or inflammatory cell infiltrates. Biopsy proven renal disease were minimal change disease(n=20), focal segmental glomerulosclerosis(n=7), membranous glomerulonephritis(n=2), membranoproliferative glomerulonephritis(n=1), $Henoch-Sch\"{o}nlein$ purpura nephritis(n=6), IgA nephropathy(n=5), poststreptococcal glomerulonephritis(n=2), systemic lupus erythematosus(n=1) and Alport syndrome(n=2). There was a significant relationship between increased cortical echogenicity and global sclerosis or tubular atrophy(P<0.05). But no significant relationship was found between increased cortical echogenicity and interstitial fibrosis, interstitial edema, or inflammatory cell infiltration. In biopsy-proven primary nephrotic syndrome(n=30), no significant relationship was found between the increased conical echogenicity and the interstitial edema, interstitial fibrosis, global sclerosis, tubular atrophy or inflammatory cell infiltration. But there was a significant relationship between increased cortical echogenicity and resistance to corticosteroid (P<0.05). These results suggest that increased cortical echogenicity may be due to tubular atrophy or global sclerosis in patients with proteinuria and may be an effective indicator of resistance to corticosteroid in primary nephrotic syndrome.(J Korean Soc of Pediatr Nephrol 2:26-33, 1998)
Lee Young-Seok;Shin Won-Hye;Ko Cheol-Woo;Koo Ja-Hoon
Childhood Kidney Diseases
/
v.2
no.1
/
pp.34-40
/
1998
Present study was conducted to determine the frequency, clinical characteristics and long-term outcome of children with idiopathic hypercalciuria. Study patients consisted of 150 children with isolated hematuria (recurrent gross or persistent microscopic), and hypercalciuria was defined as urinary calcium excretion over 4 mg/kg/day. During follow-up period up to $6{\sim}8$ years, serial check-up of renal sonogram for stone formation and Dipstick examination for hematuria were done. Forty-four (29%) out of 150 cases were diagnosed as idiopathic hypercalciuria, and in hypercalciuric children compared to normocalciuric children boys were more common than girls (9:35) and gross hematuria was more common than microscopic hematuria (37:7) (P<0.05). Oral calcium loading test showed renal type in 29 cases, absorptive type in 8 cases and in 7 cases type could not be definable. Among 3 types no differences could be found in 24 hour urinary calcium excretion and in clinical or laboratory data. Urolithiasis developed in 4 out of 44 cases (2 at the time of initial diagnosis and 2 within $1{\sim}2$ years of follow-up periods) and these children showed lower chronologic age ($3.7{\pm}2.7\;vs\;7.2{\pm}2.9\;yr$) and more girl than boys (3:1 vs 6:34) (P<0.05) compared to the rest of the hypercalciuric children. Follow-up urinalysis showed disappearance of hematuria in 56, 50, 66 and 75% of children at $1{\sim}2,\;2{\sim}4,\;4{\sim}6$ and $6{\sim}8$ years after initial diagnosis respectively. In conclusion, present study demonstrates that idiopathic hypercalciuria is a major cause of isolated hematuria in children so that in these children 24 hour urinary calcium excretion test seems to be an essential test to be performed. And serial renal sonography should be done to detect development of nephrolithiasis. However, clinical significance of dividing hypercalciuric children into two pathophysiologically distinct subtypes by oral calcium loading test seems to be in doubt and further study is needed to solve this problem.
Purpose : Hepatitis B virus (HBV) infection has been involved in several forms of immune-related glomerulopathy but the pathogenic role of HBV infection is not clear. To evaluate the clinicopathological features of HBV-associated glomerulopathy, a clinicopathological analysis and immunohistochemical stain for HBs Ag and HBe Ag were done. Methods : Clinicopathological features of HBV-associated glomerulopathy were analyzed with renal biopsies in 28 HBsAg seropositive patients from April 1990 to February 1997 at Pusan Paik Hospital, and immunohistochemical evaluation for HBsAg and HBeAg was done in renal tissues. Light microscopic, immunofluorescent and electron microscopic examination and immunohistochemical staining for HBsAg (DAKO) and HBeAg (BIONIKE) of renal tissue were performed. Result ; 1. The age distribution was 6 to 73 years old, and eight were children and 20 were adults. Male : female ratio was 3:1. Nineteen (67.9%) and 21 (75.0%) of 28 cases showed hematuria and proteinuria, respectively at the time of biopsy. Sixteen (57.2%) of them had nephrotic syndrome. 2. Liver function test was performed in 11 patients and seven (63.6%) of them showed increased AST and ALT levels. Liver biopsy was done in three patients and revealed findings of chronic active hepatitis. 3. HBV-associated glomerulopathy was membranous glomerulonephritis (MGN) in 10 (35.7%), mesangiopathy in 8 (28.6%), membranoproliferative glomerulonephritis (MPGN) in 7 (25.0%) and minimal change disease in 3 (10.7%) out of 28 cases. 4. Ultrastructurally HBV-associated MGN showed conspicuous subepithelial deposits with intramembranous, mesangial and subendothelial deposits and proliferation of mesangial cells and matrix, which were suggestive of MPGN. In HBV-associated MPGN, intramembranous and subepithelial deposits were scattered. 5. Immunohistochemical staining revealed no expression for HBsAg, but positive reaction for HBeAg along capillary wall in 8 cases (28.6%), of which 3 cases were checked for serum HBeAg, all showed positivity. Conclusion : HBV-associated glomerulopathy showed a wide morphologic spectrum and overlapping ultrastructural features in MGN and MPGN, and the activity of hepatitis B virus may be related to the development of HBV-associated glomerulopathy but further studies are recommended to confirm this relationship.
Journal of the Korean Society of Food Science and Nutrition
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v.32
no.4
/
pp.608-613
/
2003
Recently, interests in the influences of vegetarian diet on bone mineral density after menopause have been rapidly increased. The purpose of this study was to compare the protein nutritional status and bone mineral density of postmenopausal vegetarian women with that of the omnivores. Vegetarian (n=38, seven day adventists) were chosen from the subjects in previous study, and the subjects were matched with omnivores counterparts with respect to age and BMI. Anthropometric measurements, dietary intakes, and bone mineral density (BMD) were taken. The bone metabolism related marker including urinary deoxypyridinoline and urinary pH, and serum protein and albumin concentrations were evaluated. The average age of vegetarians and omnivores were 60.7 yrs and 60.5 yrs, respectively md, there was no significant difference. The mean daily energy intake of vegetarians and omnivores were 1518.5 ㎉ (82.7% of RDA) and 1355.5 ㎉ (72.6% of RDA), respectively. The mean calcium intake of vegetarians (492.6 mg, 70.3% of RDA) was not significantly different from that of omnivores (436.6 mg, 62.3% of RDA). There was no significant difference in BMDs of spine and femoral neck between vegetarians and omnivores. Urinary deoxypyridinoline (DPD) level was not significantly different. In the vegetarians, the intakes of total protein (p<0.05) and plant protein (p<0.05) had significant negative correlations with urinary DPD. In the omnivores, serum albumin showed significant positive correlations with urinary DPD (p<0.05). In conclusion, we can not find the beneficial roles of vegetarian diet on bone mineral metabolism. For the postmenopausal vegetarian woman, protein intake would be an important factor to promote skeletal health.
Gil, Jong Won;Park, Jong Hyock;Park, Min Hui;Park, Chan Young;Kim, So Young;Shin, Dong Wook;Kim, Won Dong
Journal of Radiation Protection and Research
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v.39
no.3
/
pp.142-149
/
2014
Korea conducts a national health screening program to improve and check-up on public health and in recent years, the screening usage has been increased. Given the increased screening usage for radiographic exams, this study predicts the frequency of using radiographic exams and the exposure dose. This study estimates the usage of radiographic exams by isolating radiographic exams from the 2011 analysis of the national health insurance corporation, and estimates the public exposure dose by applying each procedure's dose table from UNSCEAR 2008. As a result of the analysis, in the 2011 National Health Screening, the average exposure dose per person is assumed to be 0.57 mSv, and depending on the type of screening program from the radiographic exam, an examinee could be exposed to between 0.2 mSv and 11.081 mSv. The frequency of using radiographic exposure was found to be 16,005,914 and the exposure dose was 6,311.76 person-Sv. The most frequent exam is the Chest X-ray, which was performed 1,070,567 (69.17%), and the UGI has the highest exposure dose at 5,217.94 person-Sv (82.67%). The outcome is categorized based on gender and age, excluding those under 39 years old. In all age groups, the screening usage and exposure dose are higher in females than in males. In particular, females between 50 and 54 years old have the highest screening usage (1,674,787, 10.5%) and exposure dose (701.59 person-Sv, 11.1%). As UGI accounts for 82.76% of procedures, except when done for medical purposes, if the government supports a voluntary UGI exam (which includes the UGI exam in the National Screening Program) or abolishes it completely, as seen overseas, the cost-effectiveness and validity of the UGI exam, as well as the exposure dose from the National Screening Program will all decrease significantly.
Background: Although there are improvements of clinical symtoms after bronchodilator inhalation in COPD patients, it has been noted that there was no increase of $FEV_1$ in some cases. $FEV_1$ did not reflect precisely the improvement of ventilatory mechanics after bronchodilator inhalation in these COPD patients. The main pathophysiology of COPD is obstruction of airway in expiratory phase but in result, the load of respiratory system is increased in inspiratory phase. Therefore the improvement of clinical symptoms after bronchodilator inhalation may be due to the decrease of inspiratory load. So we performed the study which investigated the effect of bronchodilator on inspiratory response of vetilatory mechanics in COPD patients. Methods: In 17 stable COPD patients, inspiratory and expiratory forced flow-volume curves were measured respectively before bronchodilator inhalation. 10mg of salbutamol solution was inhaled via jet nebulizer for 4 minutes. Forced expiratory and inspiratory flow-volume curves were measured again 15 minutes after bronchodilator inhalation. Results: $FEV_1$, FVC and $FEV_1$/FVC% were $0.92{\pm}0.34L$($38.3{\pm}14.9%$ predicted), $2.5{\pm}0.81L$($71.1{\pm}21.0%$ predicted) and $43.1{\pm}14.5%$ respectively before bronchodilator inhalation. The values of increase of $FEV_1$, FVC and PIF(Peak Inspiratory Flow) were $0.15{\pm}0.13L$(relative increase: 17.0%), $0.58{\pm}0.38\;L$(29.0%) and $1.0{\pm}0.56L$/sec(37.5%) respectively after bronchodilator inhalation. The increase of PIF was twice more than $FEV_1$ in average(p<0.001). The increase of PIF in these patients whose $FEV_1$ was not increased after bronchodilator inhalation were 35.0%, 44.0% and 55.5% respectively. Conclusion: The inspiratory parameter reflected improvement of ventilatory mechanics by inhaled bronchodilater better than expiratory parameters in COPD patients.
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