A5004266398- Neuroendocrine regulation and behavior
- Genetic and phenotypic traits in livestock
- Organ Transplantation Techniques and Outcomes
- Birth, Development, and Health
- Infant Health and Development
- Animal Genetics and Reproduction
- Growth Hormone and Insulin-like Growth Factors
- Reproductive Physiology in Livestock
- Digestive system and related health
- Effects of Environmental Stressors on Livestock
- Liver physiology and pathology
- Neuroscience of respiration and sleep
- Adipose Tissue and Metabolism
- Hypothalamic control of reproductive hormones
- Reproductive Biology and Fertility
- Clinical Nutrition and Gastroenterology
- Diet, Metabolism, and Disease
- Heart Rate Variability and Autonomic Control
- Human-Animal Interaction Studies
- Stress Responses and Cortisol
- Menopause: Health Impacts and Treatments
- Advanced X-ray Imaging Techniques
- Xenotransplantation and immune response
- Primate Behavior and Ecology
- Effects and risks of endocrine disrupting chemicals
Nagoya University
1971-2024
Juntendo University
2010
Tokyo Metropolitan Institute of Gerontology
2010
Toho University
2010
Toho University Omori Medical Center
2010
Okayama University
1996-2003
Chiang Mai University
2003
Japan International Cooperation Agency
2003
National Taiwan University
1991
Gifu University
1991
ABSTRACT The participation of the ovarian steroids and opioid peptides in suppression pulsatile LH release during acute fasting was examined rats. Ovariectomized rats bearing silicone elastomer implants oestradiol and/or progesterone were fasted for 48 h subsequently blood samples taken every 6 min 3 h. Pulsatile suppressed after ovariectomized implanted with but not oil-implanted controls. This enhanced administration together oestradiol. In a second experiment, or oil injected s.c. (2·5...
The effect of food deprivation on the pulsatile release LH was examined in normal cycling and ovariectomized (OVX) adult female rat. In animals, there were significant decreases mean plasma levels as well frequency amplitude pulse 48 h after onset deprivation. On other hand, for up to 72 did not cause any changes OVX animals. No difference body weight blood glucose concentration found between rats throughout period 96 h. These findings suggest that ovarian factors play an important role...
SUMMARY Changes in body weight and food consumption during lactation rats nursing various sizes of litters were studied. The rate increase the mother experimental period (day 3–14 lactation) was very similar mothers with different numbers (2, 4, 8 12) suckling pups/litter. It is suggested that adult female related more closely to alteration ovarian function caused by stimulus than enhanced intake this period. Both daily gain increased as number pups/litter advanced. Linear relationships...
Drivers' frustration and anger during driving may be causes of aggressive driving, such as road rage, which can lead to accidents. Thus, development a control method is beneficial for preventing False heart rate (fHR) feedback well-known that alters feelings or mental states people by presenting (HR) faster slower than their actual HR. In this study, we develop new controlling drivers' based on fHR feedback. the proposed method, drivers are presented with heartbeat-like sounds tempo HR...
Acute fasting has been shown to impair gonadotropin secretion in an estrogen-dependent manner rats. The present study examined whether the vagus nerves have some role suppression of pulsatile LH release after 48-h ovariectomized estradiol-treated rats by performing complete subdiaphragmatic cutting or selective sectioning its branches (gastric, hepatic, celiac) first hour a 3-h blood sampling period. Vagotomy, alone, did not cause any changes unfasted animals. However, and gastric vagotomies...
SUMMARY The time of initiation copious milk secretion in the mammary glands pregnant rats and effects removal ovaries and/or placentae with foetuses on lactogenesis were investigated by measuring lactose content glands. In normal rat, was detected gland 20th day pregnancy, but not 15th. An abrupt increase occurred 21st pregnancy. Bilateral or unilateral ovariectomy, Caesarean section, without performed 18th 19th pregnancy all resulted a marked 2nd after operation. ovariectomy caused early...
SUMMARY Foster litters were given to lactating rats whose own had been removed 3, 5 or 9 days previously. Lactation was restored in all groups by this re-suckling procedure within a relatively short period. The restoration of lactation became more difficult as the interval between removal original and application foster increased. Changes nucleic acid content mammary gland after investigated for 3 before re-suckling. Both DNAP its weight increased steadily proportion length period...
In anaesthetized rabbits, cardiac output (C.O.) and its distribution to the mammary glands, heart, liver kidneys have been determined in established lactation (11--13 days), later (26--27 days) virgins. During lactation, volume of circulating blood, C.O., blood flow weight were significantly greater than There no significant differences C.O. % received by glands between late decrease lactation. The weights increased but there liver, heart (coronary) kidney flow. rate growth young was...
In an earlier study, it was observed that the weight of adrenal glands lactating rats decreased greatly when period lactation prolonged for more than 20 or 25 days (Tomogane, 1969). Although Thatcher & Tucker (1968, 1970a, b) suggested gland function may be a factor limiting milk synthesis during in rats, they found no significant differences plasma corticosteroid concentrations at resting stage between normal and lactation. Therefore, magnitude secretion response to suckling stimulus...
In the first part of study, rates estrus occurrence and success A.I. service in Thai-native Friesian crossbred, purebred cows fed National Dairy Training Applied Research Institute Chiang Mai, Thailand were traced monthly throughout a year.An electric fan water sprinkler cooled stall for during hot season (March-September).Both pure Friesians at their highest cold-dry (October-February), but they decreased steadily hot-dry (March-May) lowest hot-wet (June-September).Seasonal change similar...
The possible participation of oxytocin in the regulation pituitary LtH secretion was studied by comparing retarding effects these hormones on mammary involution over a wide range doses. Measurements content nucleic acids and phosphoprotein histological examinations gland were performed. Vaginal smears examined daily to check treatments luteal activity ovaries mother rats. Involution glands after removing litters is retarded administration either or LtH. effect oxytocin, however, seemed...
To apply the bromodeoxyuridine (BrdU) labeling method using a monoclonal antibody to study of cell proliferation in mouse uterus, methods fixation and embedding tissues immunofluorescent staining were compared terms rate detection labeled cells specificity stability fluorescence obtained. BrdU was administered intravenously 2 hr before death uterine blocks embedded polyester wax Technovit resin after formalin periodate-lysine-paraformaldehyde, respectively. The indirect with anti-BrdU...
Incidence of heat illness has been increasing dramatically due to the progression global warming. Preventing severe illness, called heatstroke, is crucial because it can lead long-term multiple organ damage, including brain, and results in more than 600 deaths per year United States. It reported that stress affects heart rate variability (HRV), which fluctuations R-R interval (RRI) on an electrocardiogram (ECG). We propose a method for detecting symptoms based HRV analysis order prevent...
The present study was undertaken to determine the site(s) of action suckling stimulus in hypothalamus and involvement cholinergic link milk-ejection reflex, by using systemic administration intracerebral implantation atropine lactating rats. Atropine administered subcutaneously blocked reflex almost completely at dose levels 700 or 350 mg/kg body weight. Implants paraventricular nucleus all 5 animals used. mammary glands 4 out were filled with milk for 3 days after operation. blockade rats...
Reproductive data, such as numbers of days to the first estrus and A.I. service postpartum, number conception, services required for interval between average in Thai native-Friesian crossbred pure Friesian dairy cows, were compiled National Dairy Training Applied Research Institute Chiang Mai, Thailand.The data analyzed statistically effect milk production on these reproductive traits was investigated.The efficiency purebred cows obviously inferior when compared with animals, spite special...
SummaryA study was made of the effects ergocornine methanesulfonate (ECO) administered to normal cycling rats on afternoon (16.30 hr) D2 (day before PE) and morning (10.30 PE prolactin content concentration pituitary gland ovulation.Pituitary in animals treated with ECO were about 3 times higher than those obtained saline-treated control animals. When killed estrus, level very high not significantly different from that at same stages estrous cycle.Ovulation occurred 5 out 6 ECO. No...