It is obvious that the examination of nerve conduction as a diagnostic tool is a relatively new field of interest with a state of still undergoing evaluation and improvement. Problems of technique and interpretation notwithstanding, determination of nerve conduction has progressed to a level where it is now used routinely as a part of the electrodiagnostic examination. The present study has been undertaken to determine the normal range of the motor nerve conduction velocity, distal motor latency, amplitude of the muscle action potentials, sensory nerve conduction velocity, distal sensory latency, amplitude and duration of the sensory nerve action potentials of median and ulnar nerves in healthy Korean. One hundred twenty healthy subjects (sixty male and sixty female) were examined. Their ages ranged from 5 to 69 in years and the subjects were arranged in three age groups of 5–9 years, 10–49 years and 50–69 years. The results obtained were as follows: l. In median nerve, mean values for motor nerve conduction velocity, distal motor latency, and amplitude of the muscle action potantials were 56.57± 4.55 (45.2–69.4) m/sec, 3.02±0.48 (1.6–4.5) msec, and 14.2±5.0 (4–28) mV, respectively. 2. In ulnar nerve, mean values for motor nerve conduction velocity, distal motor latency, and amplitude of the muscle action potentials were 58.60±5.06 (43.5–71.4) m/sec, 2.35±0.50 (1.3–4.1) msec, and 11.7±3.7(4–22) mV, respectively. 3. In median nerve, mean values for sensory nerve conduction velocity, distal sensory latency, amplitude and duration of the sensory nerve action potentials were 63.50±5.63 (53.1–75.9) m/sec, 2.37±0.38 (1.0–3.4) msec, 45.5±16.9 (13–120)u V, and 1.68±0.29 (0.9–2.5) msec, respectively. 4. In ulner nerve, mean values for sensory nerve conduction velocity, distal sensory latency, amplitude and duration of the sensory nerve action potentials were 65.34±5.16 (50.6–78.1) m/sec, 2.09±0.38 (1.3–3.2) msec, 45.6±17.5 (12–118) uV, and 1.54±0.32 (0.8–2.5) msec, respectively. In comparison of the obtained values of two nerves. 5. A significant difference was observed between motor nerve conduction studies of the median and ulnar nerves. 6. A significant difference was observed between sensory nerve conduction studies of the median and ulnar nerves except amplitude of the sensory nerve action potentials. 7. Nerve conduction velocity was significantly faster in sensory nerve than in motor nerve. In comparison of conduction velocities among 3 age groups. 8. Motor nerve conduction velocity of the median and ulnar nerves was slow in age groups of 5–9 years and 50–69 years as compared with that of age group of 10–49 years. 9. Sensory nerve conduction velocity of median nerve was slow in age groups of 5–9 years and 50–69 years as compared with that of age group of 10–49 years, and sensory nerve conduction velocity of ulnar nerve was slow in age group of 50–69 years as compared with that of age groups of 5–9 years and 10–49 years.
Action Potentials ; Healthy Volunteers ; Humans ; Male ; Median Nerve ; Neural Conduction ; Reference Values ; Ulnar Nerve

BACKGROUND: Polyarteritis nodosa(PAN) is a disease of necrotzing vasculitis which has a clinical spectrum encompassing those cases of multisystem involveme it and skin-limited variant. The clinical course of cutaneous PAN has been considered to be a benign one, however there is sorne controversy regarding its nosological entity. OBJECTIVE: To characten the clinical course of the patients with cutaneous PAN and determine whether or not it is a benign disease or something more sever. METHODS: Clinical and laboratory findings in 8 patients with Logy-proven cutaneous PAN but without any detectable visceral involvement were observed periochelly during a follow-up period over 18 months. Meticulous physical and pertinent laboratory earinations were performed each time during their visits. RESULTS: Livedo reticulari, on the lower legs was the mostorenon cutaneous findings with these patients. During the follow-up periods there were no suspected abnormal physical and laboratory findings to have other organ involvement in all 8 patients Serologic examinations for antineutrophil cytoplasmic antibody and hepatitis-B surface antigen revealed negative in all patients tested. CONCLUSION: The follow-up periods of 2 years or so does not seem to be long enough in characterizing the clinical features of PAN. However, the cutaneous: on of PAN can be regarded as a benign cutaneous variant of the disease having no visceral lesion of arteritis, even though mild degrees of constitutional symptoms and a few laboratory abnormlites could be seen.
Antibodies, Antineutrophil Cytoplasmic ; Antigens, Surface ; Arteritis ; Follow-Up Studies ; Humans ; Leg ; Polyarteritis Nodosa* ; Vasculitis

No abstract available.

Azithromycin* ; Doxycycline* ; Scrub Typhus*

OBJECTIVE: Allelic losses or loss of heterozygosity (LOH) at many chromosomal loci have been found in the cells of meningiomas. The objective of this study was to evaluate LOH at several loci of different chromosomes (1p32, 17p13, 7q21, 7q31, and 22q13) in different grades of meningiomas. METHODS: Forty surgical specimens were obtained and classified as benign, atypical, and anaplastic meningiomas. After DNA extraction, ten polymorphic microsatellite markers were used to detect LOH. Medical and surgical records, as well as pathologic findings, were reviewed retrospectively. RESULTS: LOH at 1p32 was detected in 24%, 60%, and 60% in benign, atypical, and anaplastic meningiomas, respectively. Whereas LOH at 7q21 was found in only one atypical meningioma. LOH at 7q31 was found in one benign meningioma and one atypical meningioma. LOH at 17p13 was detected in 4%, 40%, and 80% in benign, atypical, and anaplastic meningiomas, respectively. LOH at 22q13 was seen in 48%, 60%, and 60% in benign, atypical, and anaplastic meningiomas, respectively. LOH results at 1p32 and 17p13 showed statistically significant differences between benign and non-benign meningiomas. CONCLUSION: LOH at 1p32 and 17p13 showed a strong correlation with tumor progression. On the other hand, LOH at 7q21 and 7q31 may not contribute to the development of the meningiomas.
DNA ; Hand ; Loss of Heterozygosity ; Meningioma ; Microsatellite Repeats ; Retrospective Studies

No abstract available.
Gonadotropin-Releasing Hormone* ; Gonadotropins*

No abstract available.
Immunosuppression* ; Prognosis* ; Transplantation*

No abstract available.
Amniotic Fluid* ; Animals ; Embryonic Structures* ; Female ; Humans* ; Mice*

No abstract available.
Child* ; Glomerulonephritis* ; Humans

No abstract available.
Meningioma* ; Neurilemmoma*