1.Cervical nerve roots and the dural sheath: a histological study using human fetuses near term
Kei KITAMURA ; Masahito YAMAMOTO ; Yoshinosuke HIROTA ; Noriyuki SATO ; Toshimasa MACHIDA ; Noboru ISHIKAWA ; Hitoshi YAMAMOTO ; Gen MURAKAMI ; Shinichi ABE
Anatomy & Cell Biology 2020;53(4):451-459
We have previously reported that the thoracolumbar posterior nerve root shows a tortuous epidural course, based on studies of human fetuses near term. For comparison with the cervical nerve, examinations were conducted using frontal, sagittal and horizontal sections of cervical vertebrae from 22 fetuses at 30–38 weeks of gestation. The cervical nerve root showed a short, straight and lateral course near the zygapophysial joint. Multiple rather than single bundles of the cervical posterior root seemed to account for the majority of sensory nerve fibers innervating the upper extremity. Fasciculation of rootlets was evident near the thoracolumbar spinal cord, whereas it was seen in the dural pocket at the nerve exit from the dural sac although both sites were subdural. As in the thoracolumbar region, the nerve sheath was continuous with the dura mater and independently surrounded each of the anterior and posterior roots. Radicular arteries were few in the cervical region. In 2 of the 22 fetuses (31 weeks and 33 weeks), there was a segmental, unilateral abnormality of nerve rootlet fasciculation where the dorsal root ganglion was located lateral or peripheral to the intervertebral region. Long nerve roots running inferiorly are a necessary adaptation to the delayed and marked growth of the thoracolumbar vertebral column.In children, the cervical nerve roots are likely to be affected by movement or dislocation of the vertebrae. The segmental abnormality of the cervical nerve root may be linked to rare variations in the brachial plexus.
2.Relationship Between Neurological Degenerative Disorders and a Blood Deficiency Using ki-ketsu-sui Score
Yoshikazu MIZOI ; Shinichiro UEDA ; Koichiro TANAKA ; Koki CHIBA ; Kazuhiko NARA ; Toshimasa YAMAMOTO
Kampo Medicine 2019;70(1):1-7
We evaluated body constituents patterns of 74 consecutive patients with neurological degenerative disorders. They comprise Parkinson's disease (n = 38), amyotrophic lateral sclerosis (n = 19), and multiple system atrophy (n = 17). We compared body constituents patterns between them and 149 consecutive patients with other neurological diseases of the same age. We used ki-ketsu-sui scores to evaluate body constituents patterns in all cases. Ki-ketsu-sui scores measure six factors : qi deficiency (kikyo), qi stagnation (kiutsu), qi counterflow (kigyaku), blood deficiency (kekkyo), blood stasis (oketsu), and fluid retention (suitai). As a result of multivariate analysis, neurological degenerative disorders had large weight of blood deficiency, fluid retention and qi stagnation. Their adjusted odds ratios (95% confidence interval) were 3.02 (1.43-6.48), 2.37 (1.13-5.11), 2.33 (1.01-5.44), respectively. Most relevant factor to neurological degenerative disorders was a blood deficiency. Taking into consideration a prescription of “shimotsuto rui” may contribute to alleviate patient's suffering. In addition to subjective symptoms, we need an oriental medicine scale such as pulse, tongue, and abdominal examinations to judge a therapeutic effect of Kampo medicine.
3.Characterization of the Body Constituent Patterns for Symptomatic Acute Cerebral Infarction Using qi-ketsu-sui Score
Yoshikazu MIZOI ; Koichiro TANAKA ; Shinichiro UEDA ; Hideyuki ISOBE ; Kazuhiko NARA ; Koki CHIBA ; Nobuo ARAKI ; Toshimasa YAMAMOTO
Kampo Medicine 2018;69(4):321-327
We evaluated body constituent patterns of 130 consecutive patients with symptomatic acute cerebral infarction. They comprise lacunar infarction (n = 47), atherothrombotic infarction (n = 70), cardiogenic embolism (n = 11), and other type of infarction (n = 2). We compared body constituent patterns between them and 93 consecutive patients with other neurological diseases of the same age. We used qi-ketsu-sui scores to evaluate body constituent patterns in all cases. Qi-ketsu-sui scores measure six factors : qi deficiency (kikyo), qi stagnation (kiutsu), qi counterflow (kigyaku), blood deficiency (kekkyo), blood stasis (oketsu), and fluid retention (suitai). As a result of multivariate model analysis, symptomatic acute cerebral infarction had the largest weight of blood stasis and an adjusted odds ratio (95% confidence interval) was 4.6 (2.45-8.91). Even when gender as a confounding factor was adjusted by stratified analysis, adjusted odds ratios of blood stasis (95% confidence interval) were 7.46 (3.02-20.25) for males and 2.63 (1.02-7.11) for females, and those were maximum. The point (median, interquartile range) of blood stasis was more severe in acute cerebral infarction (24 points, 18-33 points) than other neurological diseases (16 points, 9-23 points). We examined relationships between body constituent patterns and clinical disease type, severity at hospitalization, and sex in patients with symptomatic acute cerebral infarction. Ratio of blood stasis was the largest in any clinical disease type, severity and sex. Blood stasis seemed to be the most important factor in symptomatic acute cerebral infarction.