No abstract available.
Head* ; Orthognathic Surgery* ; Posture* ; Prognathism*

BACKGROUND:Acute vestibular neuronitis is the disease of which the etiology and pathophysiology are largely unknown . But the viral infection and ischemia of the labyrinth and the vestibular nerve are considered as general etiology. This study was performed to support the viral infection rather than the ischemic theory. MATERIALS & METHODS:We studied seventy years old female patient who showed painful vesicles on left auricle and vertigo with spontaneous nystagmus to the right side. We performed physical examination, serologic test, ENG test, pure tone audiogram, brain magnetic resonance imaging and polymerase chain reaction. RESULTS:We found small vesicles and vascular injection in left EAC, herpes zoster IgG positive, spontaneous right beating in electronystagmograpy, 54% left canal paresis in Caloric test , decreasing left side Tc in velocity step rotatory test, decresed gain, deviation to left in symmetry and phase lead in sinusoidal harmonic acceleration test, normal range hearing in pure tone audiogram, microangiopathy on cortex in brain MRI and negative PCR. CONCLUSION:This case supports viral infection etiology rather than ischemia in vestibular neuritis. But more studies to find the etiology of vestibular neuronitis are required.
Acceleration ; Brain ; Caloric Tests ; Ear, Inner ; Female ; Hearing ; Herpes Zoster ; Herpes Zoster Oticus ; Humans ; Immunoglobulin G ; Ischemia ; Magnetic Resonance Imaging ; Paresis ; Physical Examination ; Polymerase Chain Reaction ; Reference Values ; Serologic Tests ; Vertigo ; Vestibular Nerve ; Vestibular Neuronitis

Etomidate and midazolam are newly developed and used in clinical trials. Etmoidate, a carboxylated imidazole derivative, decreases systemic vascular resistance and increases the pulmonary artery pressure in vivo. Midazolam, a water soluble derivative of benzodiazepine, decreases pulmonary artery pressure and is useful for pulmonary hypertensive patients. This study was designed to investigate the direet effects of etomidate and midazolam on vascular tension of the rabbit abdominal aorta and the pulmonary artery in vitro. In the vascular preparations with or without endothelium, changes in tension were measured following cumulative administration of etomidate (10(-6)M, 10(-5) M, 5X10(-4) M) and midazolam (10(-6)M, 10(-5)M, 10(-4)M). Vascular effects of these drugs were also studied in the preparations pretreated with indomethacin, nitro(w)-L-arginine methyl ester (L-NAME) and methylene blue. The results wer as follows; 1) Etomidate and midazolam induced vasorelaxation and the degree of relaxation depended on the concentration. 2) After denudation of the endothelium, vasorelaxant effect of etomidate and midazolam was efficiently decreased in abdominal aorta but not in pulmonary artery. 3) Indomethacin reduced vasorelaxing effect of etomidate efficiently, but didn't affect vasorelaxing effect of midazolam. 4) Following pretreatment of vascular preparations respectively with L-NAME and methylene blue, the relaxing responses to etomidate (10(-5) and 5X10(-5) M) of both abdominal aorta and pulmonary artery were depressed. Also, depressed was the relaxing response of abdominal aorta to midazolam (10(-5) M). The results of present study suggest that etomidate and midazolam possess vasorelaxing effects in both rabbit aMominal aorta and pulmonary artery. The vascular effect of etomidate is mediated via the nitric oxide pathway and also in part, by PGI2, whereas part of the vascular effect of midazolam is associated with the nitric oxide pathway.
Aorta ; Aorta, Abdominal* ; Benzodiazepines ; Endothelium ; Epoprostenol ; Etomidate* ; Humans ; Indomethacin ; Methylene Blue ; Midazolam* ; NG-Nitroarginine Methyl Ester ; Nitric Oxide ; Pulmonary Artery* ; Relaxation ; Vascular Resistance ; Vasodilation

Etomidate and midazolam are newly developed and used in clinical trials. Etmoidate, a carboxylated imidazole derivative, decreases systemic vascular resistance and increases the pulmonary artery pressure in vivo. Midazolam, a water soluble derivative of benzodiazepine, decreases pulmonary artery pressure and is useful for pulmonary hypertensive patients. This study was designed to investigate the direet effects of etomidate and midazolam on vascular tension of the rabbit abdominal aorta and the pulmonary artery in vitro. In the vascular preparations with or without endothelium, changes in tension were measured following cumulative administration of etomidate (10(-6)M, 10(-5) M, 5X10(-4) M) and midazolam (10(-6)M, 10(-5)M, 10(-4)M). Vascular effects of these drugs were also studied in the preparations pretreated with indomethacin, nitro(w)-L-arginine methyl ester (L-NAME) and methylene blue. The results wer as follows; 1) Etomidate and midazolam induced vasorelaxation and the degree of relaxation depended on the concentration. 2) After denudation of the endothelium, vasorelaxant effect of etomidate and midazolam was efficiently decreased in abdominal aorta but not in pulmonary artery. 3) Indomethacin reduced vasorelaxing effect of etomidate efficiently, but didn't affect vasorelaxing effect of midazolam. 4) Following pretreatment of vascular preparations respectively with L-NAME and methylene blue, the relaxing responses to etomidate (10(-5) and 5X10(-5) M) of both abdominal aorta and pulmonary artery were depressed. Also, depressed was the relaxing response of abdominal aorta to midazolam (10(-5) M). The results of present study suggest that etomidate and midazolam possess vasorelaxing effects in both rabbit aMominal aorta and pulmonary artery. The vascular effect of etomidate is mediated via the nitric oxide pathway and also in part, by PGI2, whereas part of the vascular effect of midazolam is associated with the nitric oxide pathway.
Aorta ; Aorta, Abdominal* ; Benzodiazepines ; Endothelium ; Epoprostenol ; Etomidate* ; Humans ; Indomethacin ; Methylene Blue ; Midazolam* ; NG-Nitroarginine Methyl Ester ; Nitric Oxide ; Pulmonary Artery* ; Relaxation ; Vascular Resistance ; Vasodilation

The ryanodine receptor/channel (RyR) mediates the release of calcium from the sarcoplasmic reticulum (SR) in both skeletal and cardiac muscle cells. There are three isoforms of the RyR: RyR1, RyR2, and RyR3. RyR1 is specifically expressed in skeletal muscles and RyR2 in cardiac muscles. RyR3 is yet another isoform found in non-muscle cells such as neuronal cells. Single channel recordings of RyR1 and RyR2 reconstituted in artificial lipid bilayer show that the characteristics of two isoforms are very distinct. RyR1 has a shorter mean open time and is activated at a higher concentration of Ca2+ than RyR2. In this study, we isolated the heavy SR membranes from canine latissimus dorsi muscles and investigated the single channel activities from the heavy SR membrane fraction using Cs+ as a charge carrier. Two different types of activities were observed. The fast-gating type (FG) with the mean open time of 0.9 ms was more frequently recorded (n = 12) than the slow-gating type (SG) with the mean open time of 269.2 ms. From the I-V relation, the slope conductance of the FG was calculated to be 514.7 pS and the SG, to 625.6 pS. The activity of the fast gating type increased by raising the concentration of Ca2+ in the cis-solution up to 100 microM. The appearance of the SG in the canine heavy SR membrane fraction suggests a possibility that two types of RyR isoform are co-expressed in mammalian skeletal muscle as well as in avian, amphibian and piscine fast twitch muscles.
Animal ; Calcium Channels/*metabolism ; Dogs ; *Ion Channel Gating ; Lipid Bilayers ; Microsomes/metabolism ; Muscle Proteins/*metabolism ; Muscle, Skeletal/*metabolism ; Ryanodine Receptor Calcium Release Channel ; Sarcoplasmic Reticulum/*metabolism ; Support, Non-U.S. Gov't ; Thorax ; Time Factors

The aims of this study were to investigate the present status of skeletal maturation and to compare body composition parameters on the basis of the levels of skeletal maturity in boys aged 9 ~12 years. The subjects participated consisted of 258 elementary school boys. Anthropometric characteristics included body weight, height, sitting height, bone widths, circumferences, and skinfold thicknesses. Skeletal maturation was assessed by the Tanner -Whitehouse II method. Skeletal age was determined by RUS scores (radius, ulna, and short bones). Body composition variables were evaluated by bioelectrical impedance analysis (BIA Model 310). Means and standard deviations were calculated by descriptive statistics. To compare body composition variables among skeletal maturity groups one -way analysis of variance (ANOVA) was applied and Duncan's a posteriori tests. The results showed that RUS scores varied from 298.2 for 9 years to 482.6 for 12 years. TW2 -20 scores were 569.2 for 9 years, 628.8 for 10 years, 701.8 for 11 years, and 814.5 for 12 years. Skeletal ages were 9.7 for 9 years, 10.5 for 10 years, 11.7 for 11 years, and 13.6 for 12 years. It indicates that chronological age was lower than skeletal age in all age groups. Although no significant difference was found in 12 years for body composition according to the levels of skeletal maturity, in general advanced boys had higher body composition variables than retarded boys. In 9 years there were significant differences (p 0.05) among skeletal maturity groups for body mass index, WHR, and WTR. Also, differences were found in 10 years for percent body fat, fat -free mass, and body mass index. In 11 years advanced children (40.4 kg) have statistically significant (p 0.05) higher fat -free mass than retarded children (32.2 kg).
Adipose Tissue ; Body Composition* ; Body Mass Index ; Body Weight ; Child ; Electric Impedance ; Humans ; Skinfold Thickness ; Ulna

BACKGROUND: An increasing number of cases of target-controlled infusion (TCI) of propofol have substituted 2% propofol for 1% due to the concerns about lipid deposition and the practical convenience. However, 2% propofol may possess a higher proportion of free aqueous propofol because of the relatively decreased lipid-solvent ratio as compared to that for 1% propofol. We performed a prospective, randomized, double-blind trial to evaluate the pain of 1% and 2% propofol TCI. The efficacy of lidocaine pretreatment to abolish the pain was also tested for each concentration of propofol. METHODS: Two hundred adult patients were randomly allocated to 4 groups according to the pretreatment drugs and propofol concentrations; placebo (normal saline) and 1% propofol group (group 1), placebo and 2% propofol group (group 2), lidocaine and 1% propofol group (group 1L), and lidocaine and 2% propofol group (group 2L). Administration of pretreatment drug was followed by TCI with using each concentration of propofol. Pain was assessed using a four-point scale during propofol infusion. RESULTS: Propofol pain was more frequent (82% vs. 63%, respectively, P = 0.026), and severe (P = 0.002) for the group 2 than for group 1. Pain was significantly reduced by lidocaine pretreatment in the group 2L (48%) and group 1L (19%), as compared with group 2 (82%) and group 1 (63%), respectively (P < 0.001, both). However, group 2L still showed considerable pain that was similar to the pain of group 1. CONCLUSIONS: TCI of 2% propofol caused more frequent and severe pain despite of lidocaine pretreatment.
Adult ; Anesthesia ; Humans ; Lidocaine ; Propofol ; Prospective Studies

Lung function reportedly declines with age and that this decline is accelerated during disease progression. However, a recent study showed that the decline might peak in the mild and moderate stage. The prognosis of chronic obstructive pulmonary disease (COPD) can be improved if the disease is diagnosed in its early stages, prior to the peak of decline in lung function. This article reviews recent studies on early COPD and the possibility of applying the U.S. Preventive Services Task Force recommendation 2008 and 2015 for early detection of COPD in Korea.
Advisory Committees ; Disease Progression ; Early Diagnosis ; Health Planning Guidelines ; Korea ; Lung ; Prognosis ; Pulmonary Disease, Chronic Obstructive*

Increases of neutrophils and osteoclasts are pathological changes of periodontitis. RANKL is an osteoclast differentiation factor. The effect of periodontopathogen LPS on RANKL-expressing neutrophils has not been clarified yet. We evaluated numerical changes of RANKL-expressing neutrophils in air pouches of mice injected with LPSs of Fusobacterium nucleatum and Porphyromonas gingivalis. Mice with air pouches were assigned into saline (C)-, E. coli LPS- (Ec LPS)-, F. nucleatum LPS (Fn LPS)-, P. gingivalis LPS (Pg LPS)-, and Fn LPS and Pg LPS (Fn + Pg LPS)-injected groups. CD11b +Ly6G + neutrophils and CD11b +Ly6G+RANKL + neutrophils in blood and air pouch exudates were determined by flow cytometry. In blood, compared to the C group, the Fn LPS group showed increases of CD11b +Ly6G + neutrophils and CD11b +Ly6G +RANKL + neutrophils whereas the Pg LPS group showed no significant differences. These increases in the Fn LPS group were not different to those in the Ec LPS group. In exudates, Fn LPS and Pg LPS groups showed increases of CD11b +Ly6G + neutrophils and CD11b +Ly6G +RANKL + neutrophils compared to the C group. Increased levels in the Fn LPS group were not different to those in the Ec LPS group, but Pg LPS group was lower than those in the Ec LPS group. In blood and exudates, the Fn+ Pg LPS group showed no difference in levels of these neutrophils compared to the Ec LPS group. LPSs of F. nucleatum and P. gingivalis increased RANKL-expressing neutrophils although the degrees of increases were different. These suggest that periodontopathogen LPS can act as a stimulant to increase RANKL-expressing neutrophils.