The circadian rhythm of glucocorticoid receptor (GR)in human peripheral leukocytes has been reported by us previously. It remains to be shown if the circadian variation of GR has any physiological significance. In ord...The circadian rhythm of glucocorticoid receptor (GR)in human peripheral leukocytes has been reported by us previously. It remains to be shown if the circadian variation of GR has any physiological significance. In order to answer the above question, the present work studies the circadian rhythm of the reactivity of the polymorphonuclear leukocytes (PML)to glucocorticoid (GC)and analyzes the correlation between the circadian rhythm of GR and the reactivity of PML to GC.展开更多
The effect of glucocorticoids on the down-regulation of glucocorticoidreceptor (GR) mRNA was studied in intact rats.GR mRNA was characterized byNorthern blot hybridization and quantitated by dot blot hybridization usi...The effect of glucocorticoids on the down-regulation of glucocorticoidreceptor (GR) mRNA was studied in intact rats.GR mRNA was characterized byNorthern blot hybridization and quantitated by dot blot hybridization using a hu-man GR cDNA fragment as a probe.Administration of hydrocortisone (F) inpolyvinyl alcohol (PVA) resulted in a rapid increase in plasma glucocorticoidswhich maintained at stress levels (20 to 40μg/dl) for about 3 d.HepaticGR mRNA decreased significantly to 73.5±6.3% of control values 6h followingF treatment,after which the decline of GR mRNA was gradual,reaching a mini-mum of 44.0±5.0% of control levels 3d after the treatment.The effect of F onthe down-regulation of hepatic GR mRNA lasted up to 11 d.In contrast,F treat-ment had no effect on GR mRNA in rat brain.These results are consistent withthe changes in GR in rats as reported previously,except that even though thehepatic cytosol GR decreased markedly,no significant changes in hepatic GRmRNA were found 1h after F treatment,strongly suggesting that thedown-regulation of GR by its ligands in vivo occurs at both transcriptional andposttranscriptional levels and is of tissue-specific fashion.展开更多
Kidney-yang deficiency syndrome(KYDS)is a diagnostic pattern in the traditional Chinese medicine.Studies have shown that KYDS is related to the functional disorder of hormones of the hypothalamic-pituitary-target glan...Kidney-yang deficiency syndrome(KYDS)is a diagnostic pattern in the traditional Chinese medicine.Studies have shown that KYDS is related to the functional disorder of hormones of the hypothalamic-pituitary-target gland axes.The standard procedure used to mimic KYDS is the injection of a high dose of exogenous glucocorticoid(hydrocortisone and corticosterone).Such a model showed symptoms such as exhaustion,body twists,cold limbs,lying crowded together,decreased rectal temperature,sexual dysfunction,decreased reaction speed,reduced spontaneous activity,hair loss,loss of appetite,and weight loss.Moreover,the model manifested an imbalance in mutual control among the hormones of the pituitary-target gland axes,including adrenocorticotrophic hormone,CORT,CRH,thyroid-stimulating hormone,triiodothyronine,thyroxine,T,E2,follicle-stimulating hormone,luteinizing hormone,and 17-OHCS.展开更多
文摘The circadian rhythm of glucocorticoid receptor (GR)in human peripheral leukocytes has been reported by us previously. It remains to be shown if the circadian variation of GR has any physiological significance. In order to answer the above question, the present work studies the circadian rhythm of the reactivity of the polymorphonuclear leukocytes (PML)to glucocorticoid (GC)and analyzes the correlation between the circadian rhythm of GR and the reactivity of PML to GC.
文摘The effect of glucocorticoids on the down-regulation of glucocorticoidreceptor (GR) mRNA was studied in intact rats.GR mRNA was characterized byNorthern blot hybridization and quantitated by dot blot hybridization using a hu-man GR cDNA fragment as a probe.Administration of hydrocortisone (F) inpolyvinyl alcohol (PVA) resulted in a rapid increase in plasma glucocorticoidswhich maintained at stress levels (20 to 40μg/dl) for about 3 d.HepaticGR mRNA decreased significantly to 73.5±6.3% of control values 6h followingF treatment,after which the decline of GR mRNA was gradual,reaching a mini-mum of 44.0±5.0% of control levels 3d after the treatment.The effect of F onthe down-regulation of hepatic GR mRNA lasted up to 11 d.In contrast,F treat-ment had no effect on GR mRNA in rat brain.These results are consistent withthe changes in GR in rats as reported previously,except that even though thehepatic cytosol GR decreased markedly,no significant changes in hepatic GRmRNA were found 1h after F treatment,strongly suggesting that thedown-regulation of GR by its ligands in vivo occurs at both transcriptional andposttranscriptional levels and is of tissue-specific fashion.
基金funded by the Shanghai Three-Year development plan project for TCM ZY(2018–2020)-CCCX-2001-05the Clinical Characteristic Project of Acupuncture and Moxibustion of Pudong New District(PDZY-2018-0610)
文摘Kidney-yang deficiency syndrome(KYDS)is a diagnostic pattern in the traditional Chinese medicine.Studies have shown that KYDS is related to the functional disorder of hormones of the hypothalamic-pituitary-target gland axes.The standard procedure used to mimic KYDS is the injection of a high dose of exogenous glucocorticoid(hydrocortisone and corticosterone).Such a model showed symptoms such as exhaustion,body twists,cold limbs,lying crowded together,decreased rectal temperature,sexual dysfunction,decreased reaction speed,reduced spontaneous activity,hair loss,loss of appetite,and weight loss.Moreover,the model manifested an imbalance in mutual control among the hormones of the pituitary-target gland axes,including adrenocorticotrophic hormone,CORT,CRH,thyroid-stimulating hormone,triiodothyronine,thyroxine,T,E2,follicle-stimulating hormone,luteinizing hormone,and 17-OHCS.
