Search Results - "John K. H. Lu"
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Estradiol Stimulates Progesterone Synthesis in Hypothalamic Astrocyte Cultures
Published in Endocrinology (Philadelphia) (01-02-2007)“…The brain synthesizes steroids de novo, especially progesterone. Recently estradiol has been shown to stimulate progesterone synthesis in the hypothalamus and…”
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The Type I BMP Receptor BmprIB is Essential for Female Reproductive Function
Published in Proceedings of the National Academy of Sciences - PNAS (03-07-2001)“…Maintenance of female reproductive competence depends on the actions of several hormones and signaling factors. Recent reports suggest roles for bone…”
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Temporal Changes Occur in the Neuroendocrine Control of Gonadotropin Secretion in Aging Female Rats: Role of Progesterone
Published in Biology of reproduction (01-09-2004)“…The present study examined the gonadotropin surge-inducing actions of estradiol (E 2 ), both alone and with progesterone (P 4 ), in middle-aged, early…”
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The luteinizing hormone surge is preceded by an estrogen-induced increase of hypothalamic progesterone in ovariectomized and adrenalectomized rats
Published in Neuroendocrinology (01-07-2003)“…As circulating estrogen levels rise on the afternoon of proestrus, they stimulate the hypothalamo-pituitary axis. This estrogen positive feedback is pivotal to…”
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Site-specific decrease of progesterone receptor mRNA expression in the hypothalamus of middle-aged persistently estrus rats
Published in Brain research (15-11-2002)“…Middle-aged females gradually become acyclic and spontaneously develop a persistently estrus (PE) state. PE rats, acyclic for 30 days (early PE), are…”
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Steroid secretion in polycystic ovarian disease after ovarian suppression by a long-acting gonadotropin-releasing hormone agonist
Published in The journal of clinical endocrinology and metabolism (01-05-1983)“…The principal glandular source of increased serum androgens in polycystic ovarian disease (PCO) is controversial), since complete separation of ovarian from…”
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Estrogen induces de novo progesterone synthesis in astrocytes
Published in Developmental neuroscience (01-09-2003)“…The brain is an established target for peripheral steroids, but also expresses steroidogenic enzymes and is capable of de novo 'sex' steroid synthesis…”
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An Abnormal Pattern of Embryonic Development during Early Pregnancy in Aging Rats1
Published in Biology of reproduction (01-11-1989)Get full text
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Clinical and hormonal effects of chronic gonadotropin-releasing hormone agonist treatment in polycystic ovarian disease
Published in The journal of clinical endocrinology and metabolism (01-10-1987)“…Previously, we reported that short term administration of a highly potent GnRH agonist (GnRHa) for 1 month to patients with polycystic ovarian disease (PCO)…”
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The Relation of Ovarian Steroid Levels in Young Female Rats to Subsequent Estrous Cyclicity and Reproductive Function during Aging1
Published in Biology of reproduction (01-12-1986)Get full text
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Relation of circulating estradiol and progesterone to gonadotropin secretion and estrous cyclicity in aging female rats
Published in Endocrinology (Philadelphia) (01-05-1985)“…The progressive cessation of regular ovulatory function in aging female rats is preceded by a significant decrease in the magnitude of the proestrous LH surge…”
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Relationship Between Progesterone and Prolactin Surges in Aged and Young Pseudopregnant Rats1
Published in Biology of reproduction (01-05-1981)Get full text
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Temporal Changes Occur in the Neuroendocrine Control of Gonadotropin Secretion in Aging Female Rats: Role of Progesterone1
Published in Biology of reproduction (01-09-2004)“…The present study examined the gonadotropin surge-inducing actions of estradiol (E2), both alone and with progesterone (P4), in middle-aged, early…”
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Influences of Age and Ovarian Follicular Reserve on Estrous Cycle Patterns, Ovulation, and Hormone Secretion in the Long-Evans Rat1
Published in Biology of reproduction (01-04-2001)“…This study examined the influences of aging and reduced ovarian follicular reserve on estrous cyclicity, estradiol (E2) production, and gonadotropin secretion…”
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Influences of age and reproductive status on ovarian ovulatory responsiveness to gonadotropin stimulation
Published in Proceedings of the Society for Experimental Biology and Medicine (01-04-1998)“…Reproductive aging in the female rat is associated with the gradual loss of regular ovulatory function, decreased fertility, and smaller litter sizes. In the…”
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Effects of Estradiol and Progesterone on Early Embryonic Development in Aging Rats1
Published in Biology of reproduction (01-11-1990)Get full text
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Influences of Age and Ovarian Follicular Reserve on Estrous Cycle Patterns, Ovulation, and Hormone Secretion in the Long-Evans Rat
Published in Biology of reproduction (01-04-2001)“…This study examined the influences of aging and reduced ovarian follicular reserve on estrous cyclicity, estradiol (E 2 ) production, and gonadotropin…”
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Neuroendocrine Control of Luteinizing Hormone Secretion and Reproductive Function in Spontaneously Persistent-Estrous Aging Rats1
Published in Biology of reproduction (01-12-1987)Get full text
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