Background : In case of tuberculous pneumonia, differentiation from bacterial lobar pneumonia is sometimes very difficult because clinical symptoms, signs and radiological images are very similar. So we investigated the usefulness of CA125, which is known to increase in tuberculous diseases, in differential diagnosis between tuberculous pneumonia (TBPN) and community acquired bacterial lobar pneumonia (LP). Methods : Serum CA125 level was measured in 20 patients with TBPN (female 12 male 8 : mean age 36.1 years) and 14 patients with LP (female 5 male 9 : mean age 45.1 years) by radioimmunoassay (Centocor(R) CA125 RIA kit). Results : 1) The serum CA125 level in TBPN ($333.7{\pm}283.5\;u/ml$) was higher than in LP ($60.9{\pm}66.2\;u/ml$). (P < 0.05) 2) If we took cut-off value as 195 u/ml in differential diagnosis between TBPN and LP, the sensitivity and specificity of CA125 level in the diagnosis of TBPN were 70% and 93%, respectively. 3) There was no significant difference in serum CA125 level between noncavitary TBPN ($242.1{\pm}76.6\;u/ml$, n=10) and cavitary TBPN ($399.6{\pm}318.4\;u/ml$, n=10). (P > 0.05) 4) Following up of serum CA125 level after initiation of antituberculosis treatment showed rapid decline and approach to near normal range in 6 months. Conclusion : High serum CA125 level (> 195 u/ml) was useful in differential diagnosis of TBPN from LP.
Background : Acute pulmonary injury by paraquat are caused by multiple mechanisms including direct injury with oxygen free radicals and several mediators released from inflammatory cells. In order to clarify whether vitamin E could reduce tissue damages induced by intraperitoneal administration of paraquat and to investigate the pathogenetic mechanisms of paraquat-induced pulmonary injury, vitamin E as a free radical scavenger was administered. Method : Rats were divided into three groups (group 1 : control, group 2 : paraquat treated group, group 3 : paraquat and vitamin E treated group). Animals were sacrificed on day 1, day 2, day 3, and day 8 after the administration of saline, paraquat, or paraquat/vitamin E. Results : Treatment with vitamin E decreased the death rate of rats treated with paraquat. Comparing with control group ($1.37{\times}10^6/ml$), mean total cell counts recovered from the lavage fluid from animals treated with paraquat($1.65{\times}10^6/ml$) were increased(p=0.06). Magnitudes of increment of the total cell counts on the Day 8 in the vitamin E treated group were smaller than those of the animals treated with paraquat alone. The neutrophils began to appear in significant amounts in the lavage fluid on Day 8 after the administration of paraquat(37.0+12.7%). A significant decreasing neutrophil concentration at Day 8 was observed in the paraquat/vitamin E treated group(20.6+13.4%). Histologically the degree of pulmonary fibrosis was most prominent in the paraquat treated group while diffuse alveolar damage was continuously observed in the paraquat/vitamin E treated group and extensive interstitial lymphocytic infiltration was seen in the paraquat/vitamin E treated group. The paraquat/vitamin E treated group showed the less histologic changes. Conclusion : In this study vitamin E acting as a scavenger of neutrophil-derived free radicals and suppressant of lipid peroxidation, seemed to be the effective antioxidant in the inhibition of paraquat-induced pulmonary injury.
Background : We can diagnose pulmonary tuberculosis with sputum AFB smear and culture, but sputum AFB smear has low sensitivity and culture needs long period, and they are not available in the patients who can not expectorate effectively. Recently developed, PCR is a fast diagnostic tool in tuberculosis, but false positive and false negative are important problems. So, we studied the diagnostic value of bronchoalveolar lavage fluid AFB smear, culture, PCR through the bronchoscopy. Methods : The 67 pulmonary tuberculosis patients and 43 non-pulmonary tuberculosis patients were analyzed with their sputum specimen AFB smear and culture. Also, bronchoscopy and bronchoalveolar lavage were done, and bronchoalveolar lavage fluid AFB smear, culture and PCR were done. Results: 1) In the cases of pulmonary tuberculosis, the sensitivity of sputum AFB smear and culture were 32.8% and 57.4%, respectively. And the sensitivity of bronchoalveolar lavage fluid AFB smear and culture were 47.8% and 80.6%. respectively. 2) In the cases of pulmonary tuberculosis, the sensitivity and the positive predictive value(for predicting a positive culture) of PCR were 80.6% and 81.5%, respectively. 3) In the cases of sputum AFB smear-negative and culture-negative pulmonary tuberculosis, the sensitivity of bronchoalveolar lavage fluid AFB smear, culture, PCR, and the positive predictive value(for predicting a positive culture) of PCR were 23.1%, 100%, 88.5%, and 82.4%, respectively. 4) The specificity of bronchoalveolar lavage fluid PCR was 77.0%. 5) The median number of days between obtaining a specimen and starting therapy was 5 days for sputum AFB smear, 9 days for bronchoalveolar lavage fluid AFB smear, 26 days for bronchoalveolar lavage fluid PCR, 32 days for sputum culture, 56 days for bronchoalveolar lavage fluid culture. Conclusion : The sensitivity of bronchoalveolar lavage fluid AFB smear and culture are higher than sputum AFB smear and culture. So, the bronchoscopy must be considered for evaluating suspected cases of pulmonary tuberculosis in patients from whom smears of expectorated sputum do not reveal mycobacteria or from whom no sputum can be obtained. Especially, combined with PCR, it is expected that pulmonary tuberculosis can be diagnosed more rapidly and more accurately, so bronchoalveolar lavage fluid APB smear and PCR can be helpful in the early treatment of pulmonary tuberculosis.
Kim, Ji-Ho;Kim, Ji-Hong;Jang, Tae-Won;Jung, Maan-Hong
Tuberculosis and Respiratory Diseases
/
v.42
no.6
/
pp.831-837
/
1995
Background: We conducted a study to determine the factors associated with, patterns of, and proportion of cases of pulmonary tuberculosis with multiple drug-resistance at Kosin medical center in Pusan. Methods: We abstracted data from 141 patients, who had active pulmonary tuberculosis and report forms of drug susceptibility between 1986 and 1994, and related the previous treatment history, the extent of lung involvement and the presence of cavities on chest X-ray films to the drug resistance. Results: Overall, 59(41.8%) of the 141 cases of tuberculosis were resistant to at least one drug and 29(20.9%) of the 139 cases were resistant to isoniazid(INH) and rifampin(RIF). Among the 63 patients with previous tuberculosis therapy, 40(63.5%) had isolates that were drug-resistant and 24(38.1%) were multi-drug resistant. Among the 78 without previous therapy, 19(24.4%) had isolates that were drug-resistant and 5(7.5%) were multi-drug resistant. For all 141, resistance to INH was most common(39.0%) followed by RIF(21.6%), ethambutol(EMB, 16.3%), $\rho$- aminosalicylic acid(10.8%), streptomycin(SM, 8.7%), and pyrazinamide(PZA, 8.0%). INH, RIF and PZA resistances were independently associated with a history of previous tuberculosis therapy (odds ratio; 3.3, 7.2 and 10.8 respectively), and RIF and SM resistance were significantly high according to the extent of lung involvement on the chest films(odds ratio; 2.9 and 2.8 respectively). Conclusions: We conclude, (1) that all persons in whom pulmonary tuberculosis is diagnosed should initially receive at least four-drug therapy(INH, RIF, PZA, and EMB or SM), (2) that susceptibility testing be done in all culture-positive patient, and (3) that those with a history of previous tuberculosis therapy or those who have advanced pulmonary tuberculosis need very careful clinical and microbiological follow-up.
Background : Tumor necrosis factor(TNF) has been considered as an important candidate for cancer gene therapy based on its potent anti-tumor activity. However, since the efficiency of current techniques of gene transfer is not satisfactory, the majorities of current protocols is aiming the in vitro gene transfer to cancer cells and re-introducing genetically modified cancer cells to hoot. In previous study, it was shown that TNF-sensitive cancer cells transfected with TNF-$\alpha$ cDNA would become highly resistant to TNF. Understanding the mechanisms of TNF-resistance in TNF-$\alpha$ gene transfected cancer cells would be an important step for improving the efficacy of cancer gene therapy as well as for better understandings of tumor biology. This study was designed to evaluate the role of new protective protein synthesis in the acquired resistance to TNF of TNF-$\alpha$ gene transfected cancer cells. Method : We transfected TNF-$\alpha$ c-DNA to WEHI164, a murine fibrosarcoma cell line, using retroviral vector(pLT12SN(TNF)) and confirm the expression of TNF with PCR, ELISA, MIT assay. Then we determined the TNF resistance of TNF gene transfected cells(WEHI164-TNF) and the changes of TNF sensitivities after treatments with actinomycin D(transcription inhibitor) and cycloheximide ( translation inhibitor). Results : WEHI164 which was sensitive to TNF became resistant to TNF after being transfected with TNF-$\alpha$ gene and the resistance to TNF was partially reversed after treatment with actinomycin D, but not with cycloheximide. Conclusion : The acquired resistance to TNF after TNF-$\alpha$ gene transfection may be associated with synthesis of some protective proteins.
Background : Surgical intervention is known as the principle management for hemoptysis of significant amount. But surgical procedure is applicable to only small number of patients because of increased mortality in emergency surgery and various functional and structural problems after lung resection. Bronchial artery embolization(BAE) has been used as an alternative interventional technique for immediate control of patients with increased risk for surgery due to recurrent or massive hemoptysis. BAE also has limitations such as recurrent bleeding after procedure and its role for the application to small amount of hemoptysis is still not established. Method : To evaluate immediate and long term effectiveness of BAE, we analysed 65 patients with hemoptysis according to therapeutic modalities they received ; BAE versus conservative management. Results : The success rate for immediate control of hemoptysis was significantly higher in BAE group with 43 cases(100%) among 43 cases compared with 17 cases(77%) among 22 cases in conservative group (p < 0.001). The disease control duration was $19.5{\pm}8.06$ months in BAE group and $18.8{\pm}6.06$ months in conservative group(p > 0.05). The therapeutic response in BAE group was 82%(36/43 cases) and 95%(21/22 cases) in conservative group (p > 0.05). According to the amount of hemoptysis, the therapeutic response were seen in 91%(29/32 cases) in less than 100ml and 85%(28/33 cases) in 100~400ml (p > 0.05). According to the manifestation of hemoptysis, the therapeutic response in groups of recurrent and nonrecurent were 87%(20/23 cases) and 88%(37/42 cases)(p > 0.05). Conclusion : The difference of therapeutic response between BAE and conservative group in patients with small amounts of hemoptysis was not found except for immediate control of hemoptysis.
Background and Object : Immunostimulatory CpG-oligodeoxynucleotides (ISS CpG-ODN) up-regulate the $T_{H1}$-type immune response and down-regulate the $T_{H2}$-type response. This study was performed to investigate the immune response changes resulting from ISS CpG-ODN on bronchial hyperresponsiveness, eosinophilic inflammation and mucus hypersecretion in rat asthma. Materials and Methods : 10 normal controls(NC) and 26 asthmatic rats, which were generated by ovalbumin(OVA) sensitization and challenge, were studied. The asthmatic rats were randomized into 11 asthma controls(AC) and 15 in the asthma-CpG treatment group(CpG). The CpG group was administered ISS CpG-ODN intramuscularly and the AC group was administered a placebo(0.9% NaCl) on day 15 and 20. After CpG-ODN or placebo administration, we measured the IFN-${\gamma}$($T_{H1}$-type cytokine) and IL-4($T_{H2}$-type cytokine) levels in the bronchoalveolar lavage fluid(BALF), the specific airway resistance(sRaw), eosinophilic fraction in BALF, eosinophilic infiltration, goblet cell dysplasia and MUC5AC gene expression in the lung tissue. Results : In the BALF of the CpG group, the IFN-${\gamma}$ concentration was significantly high and the IL-4 concentration was significantly low when compared with the AC group. Both the sRaw and eosinophilic fraction, and infiltration into the BALF and lung tissue significantly lower in the CpG group when compared with the AC group. However, little difference in goblet cell dysplasia and MUC5AC gene expression was observed between the CpG group and the AC group. Conclusion : ISS CpG-ODN decreases bronchial hyperresponsiveness and eosinophilic inflammation in the rat asthma model through the up-regulation of the $T_{H1}$-type immune response with the down-regulation of the $T_{H2}$-type response. However, the effect of these immune response changes on mucus hypersecretion was is not remarkable in this study.
Kim, Byung-Il;Cho, Chul-Ho;Kang, Shin-Wook;Cheon, Seon-Hee;Jang, Sang-Ho;Lee, Jang-Hoon;Chang, Joon;Kim, Sung-Kyu;Lee, Won-Young
Tuberculosis and Respiratory Diseases
/
v.38
no.2
/
pp.155-163
/
1991
Bronchoalveolar lavage had been done as the treatment of some diseases such as alveolar proteinsois, bronchiectasis, and severe asthma to remove excessive secretion or mucus. But in the recent decade it has been done as a diagnostic method and a tool to understand and evaluate the pathophysiology of diffuse interstitial lung diseases such as sarcoidosis, pneumoconiosis and hypersensitivity pneumonitis. To analyse the bronchoalveolar fluid, it might be useful to have a standard reference (especially cell counts and differetial count of the cells from bronchoalveolar lavage fluid) of normal person. But it is difficult to study the normal volunteers. We investgated the bronchoalveolar lavage fluid of 48 patients (28 nonsmokers, 20 smokers) who visited Severance Hospital because of minor pulmonary symptoms such as cough and sputum. They did neither complain of dyspnea nor cyanosis, and had normal or unilateral minor lesion on physical examination and chest X-ray. We analysed the recovery rate, viability, total cell count and differential count of the cells in fluid obtained by bronchoalveolar lavage. The following results were obtained: 1) Age ranged from 17 to 72 years-old with the mean age of 36.7; there was no difference of age between the nonsmoker and the smoker gorup. Male to female ratio was 2.43:1 for total group, 1.15:1 for nonsmokers, and 19:1 for smokers. 2) The diagnoses of the patients were undetermined in 41.9%, healed pulmonary tuberculosis in 37.5%, laryngitis or pharyngitis in 10.4% and others in 10.4%. 3) Total cell number of the recovered fluid by bronchoalveolar lavage was significantly higher in male[$9.6{\pm}6.2({\times}10^6)$] than in female[$5.1{\pm}3.0({\times}10^6)$](p<0.05), and there was no significant difference in the total cell number between the smokers and nonsmokers [$9.3{\pm}5.8({\times}10^6)$ vs $7.5{\pm}5.8({\times}10^6)$]. 4) The differential count of the cells from bronchoalveolar lavage fluid had no difference between the nonsmokers and the smokers. 5) There was no correlation between the total cell count and smoking or age. 6) In the smoker group, there was no correlation between the amount of smoking and the total cell count of the bronchoalveolar fluid. In conclusion, it should be careful to regard the patients with symptoms or minor radiologic abnormalities as a control group in bronchoalveolar lavage study and further study of cell analysis in bronchoalveolar lavage will be needed between smoker and nonsmoker in the male and female healthy people.
Background : Surfactant protein A (SP-A) is important in the regulation of surfactant secretion, synthesis and recycling. SP-A has important roles in regulating surfactant metabolism as well as in determining surfactant's physical properties. Since systemic sepsis is one of the common causes of acute respiratory distress syndrome (ARDS) and abnormalities in surfactant function have been described in ARDS, the authors investigated the effects of endotoxemia on the accumulation of mRNA encoding SP-A and SP-A protein content. Methods : Adult rats were given various doses of intraperitoneal endotoxin from Salmonella enteritidis and sacrificed at different times. SP-A mRNA was measured by filter hybridization method. Lung SP-A protein content was determined by double sandwich ELISA assay using a polyclonal antiserum raised in rabbits against purified rat SP-A. Results : 1) The accumulation of SP-A mRNA in the endotoxin treated group 24 hours after 2mg/kg and 5mg/kg endotoxin treatments was significantly increased 50.9% and 27.3%, respectively, compared to the control group (P<0.001, P<0.025). 2) The accumulation of SP-A mRNA 24 hours in the 5mg/kg endotoxin treated group was significantly increased by 26.5% compared to the control group (P<0.01). 3) Total amount of lung SP-A was not altered at 24 hours by various doses of treatment. Total lung SP-A content 144 hours after endotoxin administration was significantly decreased by 51.4% compared to the control group (P<0.01). Conclusions : The specific regulation of SP-A by various time course in vivo is evident. The late decline in SP-A protein content was unexpected and suggests that SP-A may be differentially regulated during lung inflammation. The functional significance of these alterations remains to be clarified.
Kim, Kyeong-Won;Lee, Kyeong-Soo;Kang, Pock-Soo;Kim, Woo-Shik;Lee, Hee-Kyeong
The Journal of Korean Academy of Prosthodontics
/
v.47
no.2
/
pp.215-221
/
2009
Statement of problem: Recently the populations of patients receiving implant surgery are greatly increase for maintaining oral health. Purpose: This study was conducted for implanted patients to assess the chewing ability patient satisfaction level and changes in quality of life before and after the implant surgery. Material and methods: The current study subjected 109 adult patients, older than 20 years of age, who received implant surgery from December, 2006 to October, 2007 at the 6 dental clinics located at Daegu and Ulsan metropolitan cities. Twice of surveys were conducted for the patients before and after receiving the dental implant surgery. Results: As the motivation of receiving implant surgery, 45.9% of the patients selected the surgery for the chance o "f chewing function recovery", and " failure of treatment and complications" was found to be the most worrisome at the time of surgery by recording 38.5%.The satisfaction level before the implant surgery scored 30.37, while the score was increased to 45.01 after the surgery by showing a significant difference before and after receiving the surgery(P<.001). Regard on the surgery, 91.8% of the patients responded as "Satisfy", and 89% of the study subjects responded that they have willingness to recommend the surgery to their families and friends. The chewing ability score measured by using the surveys on edible foods, the score before the surgery was 15.24, while the score was increased to 19.11 after the surgery by showing a significant difference before and after receiving the surgery(P<.001). The quality of life score was also found to be increased to 11.17 after the surgery from 9.99 before the surgery by showing a significant difference(P<.001). Conclusion: In a future, the studies on the numbers of implanted loss teeth and the location of tooth loss are necessary, more long-term follow study are needed, and it is thought to be necessary to enlarge the sample size of subjects in conducting the studies.
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