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Volume 27, Issue 3
Displaying 1-4 of 4 articles from this issue
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K NONAKA, T SATOH, I NAKAMURA, KA PETER, T MIURA1990 Volume 27 Issue 3 Pages 107-112
Published: November 01, 1990
Released on J-STAGE: October 13, 2010
JOURNAL FREE ACCESSMarriage and birth records were investigated in the Dariusleut endogamous subgroup of the Hutterites for seasonalities of their marriage and birth. A total of 2, 193 marriages and 11, 595 births were identified. During the 19th century when the group resided in Russia, marriages were concentrated in early winter, especially in November to January. This concentration of marriage was followed by a concentrated occurrence of the first births in autumn. During the 20th century when the Hutterites had migrated to North America, another peak of marriage appeared in June, causing the second peak, around April, in the first birth seasonality. Shape of monthly distribution of non-first births was relatively flat. The trough in June July was consistently observed in the birth seasonality of non-first births at every birth order. Although the monthly birth ratio tended to be larger at the orders of eighth and later, the deficit in June-July stayed at about 20 percent from the yearly average. The shape of birth seasonality was not significantly different according to the season of mother's birth. These facts may indicate that this fertile group was less vulnerable to any kind of environmental seasonal factors that affect their reproductive outcomes.View full abstractDownload PDF (685K) -
Tetsuo NAGASAKA, Masami HIRASHITA, Minoru TANABE, Sohtaro SAKURADA, He ...1990 Volume 27 Issue 3 Pages 113-120
Published: November 01, 1990
Released on J-STAGE: October 13, 2010
JOURNAL FREE ACCESSThe present study was designed to verify that patency of the emissary pathways is necessary for selective brain cooling during body warming in human subjects. In a climatic chamber (25°C-20% R.H.), tympanic (Tty) and esophageal (Tes) temperatures, and blood flow patterns in the angularis oculi vein (AOV) were recorded in male subjects during body warming with equipment (box shaped body warming unit) which provided a controlled climate. Each subject's head protruded outside the body warming unit and the direction and velocity of blood flow through the AOV were determined using an ultrasonic-Doppler recorder. The subject's face was fanned from the beginning with room air at a wind speed of about 2.5 m⋅sec-1 at the nose. After Tes reached the temperature 0.8-1.0°C higher than the prewarming level and while Tes and Tty were rising linearly by body warming, blood flow through the AOV was obstructed for 8 min by compression on the AOV. While obstructed, the rate of rise in Tty became greater than before while that in Tes did not change. After the obstruction was released, the rate of rise in Tty gradually returned to the pre-obstruction value. In a second series of experiments, blood flow through the facial veins was obstructed for 8 min by occlusion of the facial veins at an alinasal level after Tes reached the temperature 0.6-0.7°C higher than the prewarming level. While obstructed, inward flow through the AOV (from the face to the brain) was increased and the rate of rise in Tty became less than before but that in Tes did not change. From these results we conclude that patency of the emissary pathways is important for selective brain cooling during body warming in normal subjects.View full abstractDownload PDF (1004K) -
Y KOBAYASHI, Y MIYAZAKI, Y MOTOHASHI, M YATAGAI, S TAKAYAMA1990 Volume 27 Issue 3 Pages 121-126
Published: November 01, 1990
Released on J-STAGE: October 13, 2010
JOURNAL FREE ACCESSWe investigated the effect of cadinenes, main components of Hinoki cypress (Chamaecyparis obtusa) oil, on the cytochrome P-450 isozymes {phenobarbital (PB) induced and methylcholanthrene (MC) induced forms} in lung, adrenal, testis and kidney. Histological distribution of the cells enriched with the cytochrome P-450 reactive with antrirat-PB and antirat-MC-P-450 rabbit serum was shown in rats immunohistochemically. It was found that 1) P-450 forms induced by PB treatment, increased in lung, adrenal and testis by administration of cadinenes, 2) MC induced P-450 forms did not increase in these organs, and 3) cadinenes did not increase P-450 forms induced by PB and MC in kidney.View full abstractDownload PDF (5883K) -
Takuji KISHIMOTO, Yoichiro FUKUZAWA, Miyoko ABE, Manabu TADA1990 Volume 27 Issue 3 Pages 127-129
Published: November 01, 1990
Released on J-STAGE: October 13, 2010
JOURNAL FREE ACCESSThe combined effect of cadmium (CdCl2) and high temperature on the cell cycle in synchronized HeLa S3 cells was investigated. Flow cytometric analysis using synchronous cells showed almost no effect of high temperature (41.2°C) alone on cell cycle progression. However, combination of treatment with cadmium (100 μM) and exposure to high temperature blocked cell cycle progression at the beginning of the S phase.View full abstractDownload PDF (335K)
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