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Biomedical subjects

I Yamazaki

Publications and source records attributed to I Yamazaki.

At least 217 records · Page 12Linked to original sources
PubMedDate not supplied

Experiments on the quick-relief medical communications via the Japan's domestic communication satellite CS-2 for the case of disasters and emergencies.

Experiments on the quick-relief medical communications via the CS-2 satellite were carried out by using two types of 30/20 GHz small transportable earth stations whose antenna diameters are 1 and 2 m. As the terminal equipments, FM-SCPC systems with a one-telephone-equivalent channel were prepared for the transmission of voice, color freezed picture (9.6 kbps), supersonic echo signal and heart sound from a electrocardiograph. Signals from various medical equipments were transmitted by an FM-SCPC system from Simizu harbour (1 m station) to Tokyo transportable station (2 m), assuming that a person was injured in the ship and the ship came alongside the pier. Transmitted materials are mainly various kinds of pictures of affected parts, X-ray films and electrocardiograph with breathing sounds. It was found possible to send various medical information mentioned above via CS-2 by the 30/20 GHz simple communication systems with one-telephone-equivalent channel. Doctors suggested it would be possible to judge very well about the patients' emergency conditions and to give quick consult with inevitable treatment procedures for them. However, a few problems were found in the Hi-Fi reproduction of original colors and in the transmission of heart sounds in the very low frequency band less than 300 Hz.

Emergency Medical Services↗
PubMedDate not supplied

Serum inhibin pro alphaC in infertile men.

Specific assays have been developed for bioactive inhibin dimers, inhibin A and B, and inhibin alpha-subunit precursor pro alphaC. To better understand the role of serum inhibin pro alphaC in infertile men, the authors measured these forms of inhibin in sera from 39 infertile men and analyzed inhibin relationships with serum gonadotropins, testosterone, and estradiol. All subjects had oligozoospermia. Inhibin A levels were undetectable in all subjects. Inhibin B concentrations were 117 +/- 59 pg/mL. Inhibit B concentrations correlated negatively with serum FSH (r = .584, p < .0001) and positively with sperm count (p < .01) and bilateral testicular volume (r = .607, p < .0001). The concentration of pro alphaC was 556 +/- 236 pg/mL (normal range, 446 +/- 28). Inhibin pro alphaC showed no correlation with serum FSH, LH, testosterone, sperm concentration, and bilateral testicular volume. In addition, inhibin pro alphaC was not correlated with inhibin B. Pro alphaC is unlikely to be a useful marker for spermatogenesis in infertile men compared with inhibin B.

Adult↗