BACKGROUND: Controversy exists as to whether or not inhalation anesthetics and intravenous anesthetics impair arterial oxygenation (PaO2) during one lung ventilation (OLV). Accordingly, we examined the effect of enflurane and propofol on PaO2 and pulmonary vascular resistance (PVR) during OLV. METHODS: Forty patients, who had prolonged periods of OLV anesthesia with minimal trauma to the nonventilated lung were studied in a cross over design. Patients were randomized to four groups; Group 1 received 1 MAC of enflurane and oxygen from induction until the first 20 min after complete lung collapse, then were switched to propofol 100 g/kg/min (P100). In group 2, the order of the anesthetics was reversed. Group 3, Group 4 received the same order of the anesthetics as Group 1, Group 2, respectively but received propofol 200 g/kg/min (P200). RESULTS: During OLV, the PaO2 values were lower than those with two lung ventilation (TLV), there were no significant differences among each groups and between propofol and enflurane in PaO2, but in the selected patients (n=10, PaO2<120 mmHg during OLV), PaO2 in propofol group was higher than that of enflurane group (p<0.05). Conversion from TLV to OLV caused a significant increase in PVR, but there were no difference in PVR between propofol and enflurane group. CONCLUSIONS: These results suggest that the usual clinical dose of propofol affords no advantage over 1 MAC of enflurane anesthesia except low PaO2 patients during OLV. Propofol might be of value in risk patients of hypoxemia during thoracic surgery when OLV is planned.
Anesthesia ; Anesthetics ; Anesthetics, Inhalation ; Anesthetics, Intravenous ; Anoxia ; Cross-Over Studies ; Enflurane* ; Humans ; Lung ; One-Lung Ventilation* ; Oxygen* ; Propofol* ; Pulmonary Atelectasis ; Thoracic Surgery ; Vascular Resistance ; Ventilation

OBJECTIVE: In order to confirm the local production of total and specific IgE antibodies in the nasal polyp tissues. MATERIAL AND METHOD: We measured total IgE and house dust mite(Dermatophagoides pteronpssinus .' DP)-specific IgE antibody using enzyme-linked immunosorbent assay(ELISA) in the supernatant of nasal polyp homogenates from 72 subjects undergoing nasal polypectomy. The subjects were divided into three groups according to skin reactivity to DP: 20 strongly atopic subjects to group I(mean wheal diameter) 3mm), 19 weakly atopic subjects to group II (mean wheal diameter 1-3mm) and 33 negative skin responders to group III. RESULT: Group I showed significantly higher levels of total and DP-specific IgE levels in the nasa
Antibodies ; Dust* ; Immunoglobulin E* ; Nasal Polyps* ; Pyroglyphidae* ; Skin ; United States National Aeronautics and Space Administration

The Acknowledgements was published incorrectly.

PURPOSE: The renal histological and hemodynamic changes and the expressions of hypoxia inducible factor-1alpha (HIF-1alpha) and vascular endothelial growth factor (VEGF) were evaluated according to the differential renal function (DRF) during total ureteral obstruction (TUO) in a rabbit model. MATERIALS AND METHODS: In forty-nine control (5) and 16 experimental rabbits (16 in TUO 3 days, 13 in TUO 7 days and 15 in TUO 14 days), the renal blood flow (RBF) and 99mTc-DTPA renal scan were measured both before and after TUO. The cut-off of the DRF group was 40%. The histological changes and expressions of HIF-1alpha and VEGF were evaluated using H&E and immunohistochemical stain, respectively. RESULTS: The entire control group demonstrated more than 40% DRF. Contrary to the control group, the DRF was less than 40% in 4 (25%), 7 (53%) and 6 rabbits (40%) in TUO 3, 7 and 14 day groups, respectively. The postobstructive compared to preobstructive RBF was decreased in each group. The RBF was more decreased in the lower than the higher DRF group (more than 40%) in all of the experimental groups. Abnormal histological changes were more prominent in the experimental groups, and increased with the obstruction time. However, there was no difference in relation to the DRF. The expressions of HIF-1alpha and VEGF were more prominent in the experimental and lower DRF groups. CONCLUSIONS: During acute TUO, the decreased RBF and hypoxia may play a role in preservation of the DRF.
Anoxia* ; Hemodynamics ; Hypoxia-Inducible Factor 1 ; Rabbits ; Renal Circulation ; Ureter* ; Ureteral Obstruction* ; Vascular Endothelial Growth Factor A*

PURPOSE: A consecutive series of 710 patients who underwent curative gastrectomy for carcinoma was studied with a special reference to the number or frequency of lymph node metastasis and the patient's prognosis. MATERIAL AND METHODS: Survival rates were calculated by the Kaplan-Meier method, and the difference between each group was evaluated statistically by the log-rank method. Follow-up was obtained for 709 patients (99.9%). RESULTS: According to the number of lymph nodal metastases, the five year survival rate for group 1 (1~3 positive nodes) was 50.9%; for group 2 (4~6 positive nodes), 56.7%; and for group 3 (more than 6 positive nodes), 12.0% (p<0.0001). According to the frequency of lymph node metastases, the five year survival rate for those with up to 25 per cent frequency of metastases was 47.5%; for those with up to 50 per cent frequency of metastases, 15.6%; and for those with greater than 50 per cent metastases, 6.3% (p<0.0001). According to the frequency of the regional lymph nodes (which include perigastric nodes along the lesser and greater curvatures, nodes located along the left gastric, common hepatic, splenic, and celiac arteries) metastasis, we categorized them as group 0 (N0: no metastasis), 1 (N1: metastasis in up to 25%), and 2 (N2: metastasis in greater than 25%). CONCLUSION: This subdivision could be successfully applied to the clinical evaluation of gastric carcinoma (five year survival rate for N0, 86.9%; for N1, 49.0%; and for N2, 10.7% (p<0.0001)) without difficulty in dividing certain lymph nodes into the correct location.
Follow-Up Studies ; Gastrectomy ; Humans ; Lymph Node Excision ; Lymph Nodes* ; Neoplasm Metastasis ; Prognosis ; Stomach Neoplasms* ; Survival Rate

The present study aims to investigate the effect of methanol extract of Korean mistletoe (KM; Viscum album var. coloratum), on amyloid beta protein (Abeta) (25-35), a synthetic 25-35 amyloid peptide, -induced neurotoxicity in cultured rat cerebral cortical neurons and memory impairment in mice. Exposure of cultured neurons to 10 microM Abeta (25-35) for 24 h induced a neuronal cell death, which was measured by a 3-[4,5-dimethylthiazol-2-yl]-2,5-diphenyl-tetrazolium bromide (MTT) assay and Hoechst 33342 staining. KM (10, 30 and 50 microg/ml) significantly inhibited the Abeta (25-35)-induced apoptotic neuronal death. KM (50 microg/ml) inhibited 10 microM Abeta (25-35)-induced elevation of intracellular calcium concentration ([Ca2+]i), which was measured by a fluorescent dye, Fluo-4 AM. Glutamate release into medium and generation of reactive oxygen species (ROS) induced by 10 microM Abeta (25-35) were also inhibited by KM (10, 30 and 50 microg/ml). These results suggest that KM may mitigate the Abeta (25-35)-induced neurotoxicity by interfering with the increase of [Ca2+]i and then inhibiting glutamate release and generation of ROS in cultured neurons. In addition, orally administered KM (25 and 50 mg/kg, 7 days) significantly prevented memory impairment induced by intracerebroventricular injection of Abeta (25-35) (8 nmol). Taken together, it is suggested that anti-dementia effect of KM is due to its neuroprotective effect against Abeta (25-35)-induced neurotoxicity and that KM may have therapeutic role in prevention of the progression of Alzheimer's disease.
Alzheimer Disease ; Amyloid beta-Peptides* ; Amyloid* ; Animals ; Calcium ; Cell Death ; Glutamic Acid ; Memory* ; Methanol ; Mice ; Mistletoe* ; Neurons* ; Neuroprotective Agents ; Rats ; Reactive Oxygen Species ; Viscum album

OBJECTIVE: There are various factors affecting the outcome of human in vitro fertilization (IVF) programs. A retrospective study was performed to evaluate the influence of the factors on pregnancy rate of IVF programs. METHODS: From September 1994 to December 2001, 2604 IVF-ET cycles were performed from 1823 patients. The effects of ovarian response to controlled ovarian hyperstimulation, cause of infertility, age of patients, number of oocytes aspirated, number of embryos transferred, quality of embryos transferred, endometrial thickness, and type of IVF procedure on the pregnancy rates of the IVF-ET cycles were evaluated. RESULTS: Of 2604 IVF-ET cycles, 931 pregnancies (35.8%) were obtained from fresh embryos transfer (ET), and 78 pregnancies (20.1%) were obtained from 389 thawing ET cycles. Total 1009 clinical pregnancies were obtained, so the cumulative pregnancy rate is 38.7%. The pregnancy rates were significantly decreased in patients who were over 38 years old, showing poor ovarian response or having less than 8 mm of endometrial thickness (P<0.05). At least more than one Grade 1 or Grade 2 embryo transfer is requisite for maintaining over 40% of pregnancy rate. Limitation of embryos number for transfer to 3 is recommended for maintaining pregnancy rate and restraining multiple pregnancy rate. Transfer of zygotes or/and embryos into the oviduct is beneficial for improving the pregnancy rate, compared to transfer of embryos into the uterus. CONCLUSION: Pregnancy rate in IVF-ET is significantly affected by both endogenous and exogenous factors such as age, ovarian response, endometrial thickness, quality and number of embryos transferred, and method of IVF programs. Therefore, continuous effort to improve not only the controllable exogenous factors but the uncontrollable endogenous factors is necessary for increasing the pregnancy rate.
Adult ; Animals ; Embryo Transfer ; Embryonic Structures ; Female ; Fertilization in Vitro ; Humans ; Infertility ; Oocytes ; Oviducts ; Pregnancy Rate ; Pregnancy* ; Pregnancy, Multiple ; Retrospective Studies ; Uterus ; Zygote

Background/Aims: Small intestinal bacterial overgrowth (SIBO) is expected in children and adolescents with functional abdominal pain disorders (FAPDs). This study is conducted to estimate the prevalence of SIBO and to investigate the role of SIBO in children and adolescents with FAPDs. Methods: This prospective study enrolled children with FAPDs fulfilling the Rome IV criteria. A hydrogen-methane glucose breath test was used to diagnose SIBO. A survey of bowel symptoms using questionnaires, birth history, types of feeding, and the presence of allergy was conducted. Results: Sixty-eight children and adolescents (range, 6-17 years; median, 12.5 years) were enrolled. SIBO was detected in 14 patients (20.6%). Age (≥ 12 years) (P < 0.003) and loose stool (P = 0.048) were significantly more common in children with SIBO than in children without SIBO. However, the history of allergies (P = 0.031) was less common in children with SIBO than those without SIBO. No significant differences were observed in other demographic findings. In multivariate analysis, age (≥ 12 years) was the independent factor predicting SIBO in children with FAPDs. Conclusions SIBO is not uncommon in children and adolescents with FAPDs. Among children aged above 12 years and diagnosed with FAPDs, SIBO is a suspected clinical target for treatment to relieve intestinal symptoms. A further study to investigate the association between intestinal bacteria and history of allergy is needed.

Objective: Severe acute cholecystitis is an infectious disease that requires immediate gallbladder drainage. Although percutaneous transhepatic gallbladder drainage (PTGBD) is the most common method of gallbladder drainage, the optimal timing remains unclear. Methods: This study is a retrospective analysis of patients diagnosed with severe acute cholecystitis who underwent PTGBD between July 2018 to June 2021. This study investigated the effect of time from emergency department arrival to PTGBD (tPTGBD) on patient prognosis. Results: Totally, 48 patients were included in this study. Based on the cutoff value calculated using the Youden index, the group with tPTGBD of <5.93 hours had a shorter hospital stay (10 vs. 13.5 days, P=0.021), lower portion of progression (27:5 [15.6%] vs. 7:9 [56.3%], P=0.004), even they had a higher initial SOFA score (6 vs. 4.6, P=0.049). However, no statistical difference was obtained for the length of ICU stay between both groups (1 vs. 2, P=0.617). Conclusion Executing PTGBD to severe acute cholecystitis patients within 5.93 hours after presenting at the emergency department is associated with reduced progression and hospital stay.

The effects of ethylene glycol monoethyl ether (EGEE) on testicular cell populations in pubertal (5 weeks old) and adult (9 weeks old) male rats were investigated by a flow cytometric method. A total of 50 rats (in number, 25 pubertal and 25 adult rats) was divided into 5 experimental groups including 0 (control), 50, 100, 200, and 400 mg EGEE/kg of body weight. The animals were administered by gavage for 4 weeks. In adult rats, the treatment of EGEE at the dose of 400 mg/kg of body weight decreased significantly the populations of haploid, while it increased those of diploid and tetraploid cells. In pubertal rats, the treatment of EGEE at the dose of 400 mg/kg of body weight caused only minimal changes in the relative percent of testicular cell types. These results suggest that the effects of EGEE on testicular function in pubertal rats appear to be less pronounced than in adult rats.
Animals ; Dose-Response Relationship, Drug ; Ethylene Glycols/*toxicity ; Male ; Organ Size/drug effects ; Rats ; Sexual Maturation/*drug effects ; Solvents/*toxicity ; Spermatogenesis/*drug effects ; Testis/drug effects/*pathology ; Time Factors