The present study was conducted to examine whether stretching was effective to control muscular atrophy.Subjects were eight male undergraduate students (height 171.4 ± 5.8 cm, body weight 72.2 ± 7.8 kg, and age 20.6 ± 1.1 years) and the muscle analyzed was the vastus lateralis.Firstly, the subjects were instructed to perform strength training for a period of 16 weeks, which was followed by a 12-week detraining period. During the detraining period, either the right or the left leg was stretched daily for 10 minutes (2 sets). The mass of the vastus lateralis muscle was estimated based on its cross-sectional area (CSA), as assessed by magnetic resonance imaging (MRI). Relative decreases in muscle mass were compared between the stretched and the non-stretched control leg.Muscle mass in the non-stretched leg showed significant decreases during detraining, while no significant decreases in muscle mass were detected in the stretched leg. This outcome indicates that stretching can influence muscle plasticity and, therefore, is effective for preventing decreases in muscle mass.In conclusion, this study suggests that, added to its known ability to improve flexibility, accelerate recovery from fatigue, and prevent injuries, static stretching is effective for controlling muscle atrophy.

We have detected Hepatitis B viral DNA on the surface of needles after removing acupuncture needles. Using a polymerase chain reaction we confirmed a band specific for Hepatitis B virus in one out of two patients who are known carriers. Our study indicates that acupuncture needles represent one possible sources of viral infection.

We examined whether wiping acupuncture needles with cotton could remove Hepatitis C viruses (HCV) adhering to the needles. The needles were incubated in the serum from patients infected with HCV, then the needles were wiped with dry cotton or cotton soaked in 80% ethanol. RNA was extracted from these needles and the HCV genome was amplified by reverse transcription-polymerase chain reaction (RT-PCR). The results indicated that the HCV genome was not detected when the needles were wiped with dry cotton. However, in one of two experiments, the HCV genome was detected after wiping the needles with cotton soaked in ethanol. We also examined the HCV contamination on the needles extracted from patients infected with HCV. The HCV genome was detected on extracted needles that were not wiped with cotton, but the genome was not found on needles wiped with cotton at the time of extraction. Therefore, wiping acupuncture needles with cotton might effectively remove HCV on the contaminated needles, but the viruses could not always be re-moved by simply wiping the needles with cotton.

We report on two cases of relapsing aspiration pneumonia caused by dysphagia due to cerebrovascular disease. Sei-hai-to (Qing Fei tang) offered useful palliation in both cases. Case 1 was an 83-year-old-woman who was hospitalized for multiple lacunar infarction and lumbago in 1996. She gradually became bedridden within two years of the admission period. She was admitted to a long-term care hospital affiliated with our department in January 1998. Dysphagia and productive cough appeared in May, and enteral tube feeding was started after she developed pneumonia in August. Pneumonia persisted against some antibiotics, and feverish periods ranged from 8 to 18 days a month. CRP values were elevated to more than 5mg/dl. Administration of Sei-hai-to provided negative CRP values and decreased feverish periods to 0-2 days a month. Case 2 was a 93-year-old-man who suffered from cerebral bleeding in the right thalamus in 1984. He developed many attacks of aspiration pneumonia after starting oral feeding. He was admitted to a long-term care hospital affiliated with our department in April 1999. Sputum culture yielded P. aeruginosa and MRSA. Moreover, fluoroscopy showed aspiration into the lower airway. Aspiration pneumonia relapsed continually without antibiotics. Administration of both Sei-hai-to and clarithromycin decreased feverish periods and provided negative CRP values. Pneumonia relapsed easily either with Sei-hai-to therapy alone or Clarithromycin therapy alone.

We report a case of a patient with steroid-dependent nephrotic syndrome, who achieved complete remission with a combination of steroid therapy and Bunsho-to. The patient was a 27-year-old female who became aware of edema, and was diagnosed as suffering from focal glomerular sclerosis (glomerulosclerosis) with nephrotic syndrome in November 1992. She responded to steroid therapy, but nephrotic syndrome relapsed frequently after the repeated reduction of steroids. In July 1995, she came to our hospital, and was diagnosed as having a recurrence of nephrotic syndrome. Although the combination therapy of steroid and Kampo formulas, Shinbu-to or Shimotsu-to and/or Keigairengyo-to, was effective, an exacerbation of nephrotic syndrome occurred after steroid therapy was discontinued, in July 1997. The prescription was changed to Bunsho-to, and steroid therapy was re-initiated with 10mg of prednisolone daily. As a result, she achieved complete remission. The steroid therapy could be discontinued in July 1999, and now she has taken Bunsho-to only for 18 months. But the complete remission of nephrotic syndrome has been maintained.

This report illustrates a case of chronic inflammatory demyelinating polyneuropathy (CIDP) masquerading as neurofibromatosis caused by multifocal enlargements of spinal nerve roots. At age 73, the patient reported a 6-year history of numbness, weakness and pain in the hands and legs, but he could but he could walk independently with a cane. And although tremor was present, he could still draw. T2-weighted magnetic resonance imaging (MRI) through the cervical spine demonstrated spinal cord compression bilaterally at C 6-7, caused by neurofibroma-like cervical root tumors and enlargement of the spinal nerve roots and the brachial and lumbosacral nerve plexuses. Nerve conduction studies showed very little evoked response, with the exception of the median nerve which demonstrated prolonged distal latency and reduced compound muscle action potential with temporal dispersion, suggesting a diagnosis of demyelinating neuropathy. Somatosensory evoked potentials of the median nerve revealed prolonged latency, and motor evoked potentials obtained from the abductor pollicis brevis and abductor digiti minimi by transcranial magnetic stimulation demonstrated prolonged latency and temporal dispersion. Sural nerve biopsies showed segmental demyelination, remyelination (onion-bulb formation), axonal loss, and lymphocyte infiltration suggesting CIDP. The patient did not have a positive family history and declined further genetic studies. We could therefore not rule out the possibility of a hereditary hypertrophic neuropathy such as Charcot-Marie-Tooth disease.

Approximately 80 % of medical students start medical training in a specific department at their medical school hospital after graduation and do not experience medical practices in other departments. Therefore, a questionnaire survey of conditions in and opinions about the present postgraduate clinical training was conducted among trainees at Osaka University Hospital. Questionnaires were returned by 136 of the 156 trainees (87.2 %). Their average income was ¥255, 000 per month. Approximately 85 % of trainees had less than 1 day's vacation each month. Forty percent of trainees were not satisfied with the present postgraduate clinical training course, because 75 % felt that their training life was too busy and did not allow them to observe a variety of diseases. These results suggest that the postgraduate medical training program in university hospitals should be changed to include various disciplines in several departments in cooperation with other hospitals and clinics for outpatients. To raise the quality of postgraduate medical training, an education system for trainees must be established and duties unrelated to medical examinations and treatment must be reduced.

There is little or no information about the distribution of elastic fibers in the human fetal head. We examined this issue in 15 late-stage fetuses (crown-rump length, 220-320 mm) using aldehyde-fuchsin and elastica-Masson staining, and we used the arterial wall elastic laminae and external ear cartilages as positive staining controls. The posterior pharyngeal wall, as well as the ligaments connecting the laryngeal cartilages, contained abundant elastic fibers. In contrast with the sphenomandibular ligament and the temporomandibular joint disk, in which elastic fibers were partly present, the discomalleolar ligament and the fascial structures around the pterygoid muscles did not have any elastic fibers. In addition, the posterior marginal fascia of the prestyloid space did contain such fibers. Notably, in the middle ear, elastic fibers accumulated along the tendons of the tensor tympani and stapedius muscles and in the joint capsules of the ear ossicle articulations. Elastic fibers were not seen in any other muscle tendons or vertebral facet capsules in the head and neck. Despite being composed of smooth muscle, the orbitalis muscle did not contain any elastic fibers. The elastic fibers in the sphenomandibular ligament seemed to correspond to an intermediate step of development between Meckel's cartilage and the final ligament. Overall, there seemed to be a mini-version of elastic fiber distribution compared to that in adults and a different specific developmental pattern of connective tissues. The latter morphology might be a result of an adaptation to hypoxic conditions during development.
Adult ; Capsules ; Cartilage ; Connective Tissue ; Ear Cartilage ; Ear Ossicles ; Ear, Middle ; Elastic Tissue ; Fascia ; Fetus ; Head ; Humans ; Joint Capsule ; Laryngeal Cartilages ; Ligaments ; Muscle, Smooth ; Muscles ; Neck ; Pterygoid Muscles ; Stapedius ; Temporomandibular Joint Disc ; Tendons ; Tensor Tympani