6 research outputs found
Diagnostic Value of the H Reflex Study in Low Back Pain
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[νκΈ]
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μλ€.
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0.31Β±0.48msecλ‘μ¨ μ 1μ²μΆμ κ²½κ·Όλ³λ³κ΅°μμλ§ μμμλ μ°¨μ΄λ₯Ό λ³Ό μ μμλ€.
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λ²μΌλ‘μ μμ²μΆλΆ μ κ²½κ·Όλ³λ³μ μ§λ¨μ μ νλμ λ³λ³μ λΆμλ₯Ό κ²°μ νλ λ°μλ λ§μ
λμμ΄ λλ€κ³ μκ°λλ€.
Diagnostic Value of the H Reflex Study in Low Back Pain
Ueon Woo Rah
Department of Medical Science The Graduate School, Yonsei University
(Directed by Prof. Jung Soon Shin, M.D.)
The subjects of this study were 16l cases with low back pain aged from 14 to 67
years who received electrodiagnostic examination including H reflex study at
Severance Hospital during the period September 1, 1982 to August 31, 1983.
The objectives of this study were to demonstrate the diagnostic value and the
clinical usefulness in low back pain patients with unilateral radiculopathy over
the lumbosacral area.
Forty normal subjects aged from 18 to 49 years served as controls for this study.
The mean difference in the H reflex latency of both legs of 40 normal subjects was
as little as 0.14Β±0.15 msec and it was statistically non significant(p<0.05) .The
standard error inherent in predicting the H reflex latency in one leg from that in
the other in the same subject was 0.30msec.
One hundred and sixty-one cases with low back pain were divided into 3 groups
which consisted of L5 radiculopathy, Sl radiculopathy and normal EMG groups. These
groups of 66, 45 and 50 patients respectively were matched for age, sex and the
level of root involvement.
H reflex latency were measured in both legs. The mean difference of each group
was 0.12Β±0.12 msec, 1.93Β±1.98 msec and 0.31Β±0.48 msec respectively. So the mean
difference of Sl radiculopathy group was significantly prolonged.
Therefore in patients with S1 radiculopathy a men difference of more than 1.0
msec would indicate an abnormality.
The H reflex was present but prolonged in latency as compared to the unaffected
side in 23 cases, it was absent in the affected side in 17 cases and the sum was 40
cases among 45 cases with unilateral Sl radiculopathy confirmed by EMG examination
.
Five cases with normal EMG finding had abnormal result of H reflex study.
So the H reflex study was an diagnostic aid in unilateral Sl radiculopathy in
addition to traditional EMG study.
H reflex study was an objective test that can be of great diagnostic help in
cases in which there was suspicion of Sl radiculopathy but normal EMG finding.
In conclusion, the H reflex study can be easily done all EMG laboratories and so
it will increase the chance for accuracy in the diagnosis of radiculopathy or in
the determination of the level of the lesion.restrictio
Detection of anti-neural autoantibodies in patients with traumatic nervous system injury
μνκ³Ό/λ°μ¬[νκΈ]μ κ²½νμμ λν μκ°λ©΄μνμ²΄κ° μ κ²½μμμ λ³λ¦¬κΈ°μ μ κ΄λ ¨λ¨μ΄ λ³΄κ³ λμ΄ μΈμμ± μ κ²½κ³ μμ νμμμλ μ‘°μ§μμμ μν΄ λ
ΈμΆλλ μ κ²½μ‘°μ§νμμ λν μκ°νμ²΄κ° μμ±λμ΄ μ κ²½μ‘°μ§μ λν λ³λ³μ μΌμΌμΌμ νμμ μΉλ£ν μ‘°μ§ κΈ°λ₯μ ν볡μλ μν₯μ μ€ κ²μΌλ‘ μμλλ€. κ·Έλ¬λ μμ§κΉμ§ μΈμμ± μ κ²½κ³ μμ νμμμ νμ κ²½ ν체μ κ΄ν μ°κ΅¬λ³΄κ³ λ κ±°μ μλ μ€μ μ΄λ€.
λ³Έ μ°κ΅¬μμλ νμ κ²½ νμ²΄κ° μΈμμ± μ κ²½κ³ μμ νμμ μν λ° κ²½κ³Όμ λ―ΈμΉλ μν₯μ μ°κ΅¬νλ λ°μ νμν κΈ°μ΄μλ£λ₯Ό μ»κ³ μ μ¬λμ λ§μ΄μ κ²½μ‘°μ§μμ μμ λΆλ¦¬νμ¬ μ»μ ceramideμ galactocerebroside(GC)μ±λΆκ³Ό μμ λμ‘°μ§μμ λΆλ¦¬ν asialo-GM^^1 (AGM^^1 )μ νμμΌλ‘ μ¬μ©νμ¬ μΈμμ± μ κ²½κ³ μμ νμμμ μ΄ μ κ²½νμλ€μ λν μκ°ν체λ₯Ό ν¨μκ²°ν© λ©΄μν‘μ°©κ²μ¬λ²μΌλ‘ μΈ‘μ νμ¬ νμ κ²½ μκ°ν체μ μ‘΄μ¬μ¬λΆλ₯Ό μμ보μλ€. λν μΈμμ± μ κ²½κ³ μμ νμμμ μμλΆμ λ° μμμ λμ λ°λΌ νμ κ²½ μκ°ν체κ°λ₯Ό λΉκ΅
λΆμνμ¬ λ€μκ³Ό κ°μ κ²°κ³Όλ₯Ό μ»μλ€.
1. μΈμμ± μ κ²½κ³ μμ νμμ μμ΄μ μ κ²½νμ ceramide, AGM^^1 , GCμ λν μ£Όμ ν체λIgMμ΄μλ€.
2. μΈμμ μ κ²½κ³ μμ νμ 185λͺ
κ°μ΄λ° ν체 μμ±μλ ceramide: 75λͺ
(40.5%), AGM^^1 : 71λͺ
(38.4%), GC: 57λͺ
(30.8%)μΌλ‘ μ μλμ‘°κ΅° 291λͺ
μ€ κ° νμμ λν ν체 μμ±μ 55λͺ
(18.9%),43λͺ
(14.8%), 38λͺ
(13.0%)λ³΄λ€ ν΅κ³μ μΌλ‘ μ μνκ² λ§μλ€.
3. μμλΆμλ μμμ λμ λ°λ₯Έ μΈμμ± μ κ²½κ³ μμ νμκ΅° κ°μ μΈκ°μ§ νμμ λν ν체 μμ±λ₯ μ΄λ νκ· ν체κ°λ ν΅κ³μ μΌλ‘ μ μν μ°¨μ΄κ° μμμΌλ, μ€μ¦ λλΆμμ νμκ΅°κ³Ό λΆμμ μ²μμμ νμκ΅°μμλ λλ°μμμ΄ μμΌλ©΄, κ·Έλ¦¬κ³ λΆμμ μ²μμμ νμκ΅°
μμλ μμλΆμκ° λμΌλ©΄ ν체μ λ°μμ λκ° λμ κ²½ν₯μ λ³΄μ¬ μ£Όμλ€.
4. μΈμμ± μ κ²½κ³ μμ νμμμ νμ κ²½ IgM ν체κ°λ μμν 2βΌ3κ°μ νλΆν° μ μ°¨λ‘ κ°μνμμΌλ©°, λλΆλΆ 6βΌ10κ°μ νμλ IgM ν체κ°κ° μμ± κΈ°μ€μΉ μ΄νλ‘ κ°μνμλ€.
μ΄μμ κ²°κ³Όλ‘ λ³΄μ μΈμμ± μ κ²½κ³ μμ νμμμ νμ κ²½ ν체μ μμ±λ₯ κ³Ό νκ· νμ²΄κ° μ μ λμ‘°κ΅°λ³΄λ€ μ μνκ² λμμ μ μ μμλ€. νΉν AGM^^1 , νμμ λν ν체κ°λ μμμ λκ° μ¬ν κ²½μ°μ λ λμ κ²½ν₯μ λ³΄μ¬ νμ κ²½ νμ²΄κ° μΈμμΌλ‘ λ
ΈμΆλ μ κ²½μ‘°μ§μ μμμ΄λ μ¬μμ μ΅μ κΈ°μ μ κ΄μ¬ν κ°λ₯μ±μ΄ μμ κ²μΌλ‘ μ¬λ£λλ©°, μΈμμ± μ 경체 μμ νμμμ νμ κ²½ ν체μ μν μ΄λμ κ²½λ³μ¦μ΄λ κ°κ°μ κ²½λ³μ¦ λ±μ μλ‘μ΄ μ κ²½λ³λ³μ λ°μμ¬λΆλ μμΌλ‘ μ§μμ μΈ μΆμ μ‘°μ¬λ₯Ό μνν¨μΌλ‘μ¨ μ μ μμΌλ¦¬λΌ μ¬λ£λλ€.
[μλ¬Έ]Anti-neural antibodies have been implicated in the pathogenesis of nerve damage in patients with Guillain-Barre syndrome, leprosy, and other motor neuron diseases. Considering exposure of damaged nerve tissue to the immune system during traumatic injuries, the resulting anti-neural antibodies formed in patients with nervous system injury may affect the healing process of nerve tissues or induce nerve damage at the injury sites or other sites. To date, however, no information is available on the prevalence of anti-neural antibodies in sera from patients with
traumatic nervous system injury and controls. In this study, serum samples were obtained from 185 patients with traumatic nervous system injury and 291 controls and antibodies were detected by an enzyme linked-immunosorbent assay(ELISA) against
ceramide, asialo-GM^^1 (AGM^^1 ), and galactocerebroside(GC). The results were then analyzed based on nerve injury sites, severity, and presence or absence of associated injuries, duration after injury, etc.
The results obtained were as follows:
1 The major immununoglobulin class was IgM against the ceramide, GC, and AGM^^1 antigens in sera from patients with traumatic nervous system injury.
2. Among 185 patients with traumatic nervous system injury, a significant level of antibodies were detectable in 75(40.5%) against ceramide, in 71(38.4%) against AGM^^1 , and in 57(37.8%) against GC antigen, respectively. In contrast, of 291 serum specimens from controls, 55(18.9%) were reactive with ceramide, 43(14.8%) with AGM^^1 , and 38(13.0%) with GC, respectively. The seroprevalence of anti-neural antibodies was thus significantly higher among patients with traumatic nervous system injury than among controls (p<0.01).
3. There was no significant difference of the prevalence rate and the mean value of anti-neural antibodies among three patient groups, one with head injury, a second with spinal cord injury, and a third, amputation. However serum antibody reactivity was higher in the severe head injury and incomplete spinal cord injury sub-groups than in those who suffered from other associated injuries.
4. The value of anti-neural IgM antibodies gradually decreased in most patients with traumatic nervous system injury within two to three months after trauma. In about six to ten months after injury, the value of IgM antibodies significantly decreased below the normal values of these antibodies.
This study thus showed that patients with traumatic nervous system injury had a significant level of circulating anti-neural IgM antibodies. But any immediate adversary effect of such anti-bodies to the patients was net expected considering the relatively short life of anti-neural antibodies. However, further fellow-up studies on these patients are desirable to understand the role of anti-neural antibodies in the pathogenesis of nerve damage.prohibitio