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. 2018 Sep 1;39(4):503–522. doi: 10.1007/s10571-018-0614-5

Table 1.

Mifepristone effects on ACTH and corticosterone in rodents

Drug Dose Mode of administration Outcome Reference
Mifepristone 25 mg/kg rat s.c. morning No change in basal corticosterone for 4 h Ratka et al. (1989)
Mifepristone 25 mg/kg rat s.c. 60 min prior to stressor Blunted peak and prolonged secretion of stress-induced corticosterone Ratka et al. (1989)
Mifepristone 100 ng/rat i.c.v. morning No change in basal corticosterone for 4 h Ratka et al. (1989)
Mifepristone 100 ng/rat i.c.v. 15 min prior to stressor Blunted peak and prolonged secretion of stress-induced corticosterone Ratka et al. (1989)
Mifepristone 1, 3, 5, 10, 30, and 100 ng/rat i.c.v. immediate after initial swim test Doses ≥ 10 ng disinhibited HPA axis & interfered with retention immobility de Kloet et al. (1988)
Mifepristone 100 ng infusion/rat 100 ng/h/for 3 days Increased peak and decreased basal corticosterone levels Van Haarst et al. (1996)
Mifepristone 100 ng/ rat i.c.v Increased basal ACTH and corticosterone levels at 1 h Van Haarst et al. (1997)
Mifepristone 5 ng/ rat bilateral dorsal hippocampus Decreased basal ACTH and corticosterone levels at 1 h Van Haarst et al. (1997)
Mifepristone 200 mg/ kg C57 mouse orally via oats Increased basal and stress-induced corticosterone Dalm et al. (2008)
Mifepristone 30 mg/kg rat s.c., 2 weeks daily Suppressed basal and stress-induced HPA-axis activity, thymus weight reduced Havel et al. (1996)
Mifepristone 10 mg/kg rat s.c. 5 days, daily, 90 min after last injection Suppressed basal and stress-induced HPA-axis activity Wulsin et al. (2010)
C-108297, GR modulator 30 and 60 mg/kg rat s.c. 5 days, daily, 90 min after last injection Suppressed basal and stress-induced HPA-axis activity Solomon et al. (2014)
C-118335 GR modulator/MR antagonist 30 and 60 mg/kg rat s.c. 5 days, daily, 90 min after last injection Suppressed basal and stress-induced HPA-axis activity Nguyen et al. (2017), Nguyen et al. (2018)
Mifepristone 60 mg/kg C57 mouse, high-fat diet orally, daily for 3 weeks in chow Decreased basal am and pm (trend) corticosterone levels, decreased adrenal & thymus weight van den Heuvel et al. (2016), Kroon et al. (2018)
C-108297, GR modulator 80 mg/ kg C57 mouse, high-fat diet orally, daily for 3 weeks in chow Decreased basal am and pm corticosterone level, decreased adrenal and thymus weight van den Heuvel et al. (2016)
C-125281, selective GR antagonist 60 mg/ kg C57 mouse, high-fat diet orally, daily for 3 weeks in chow Restores high-fat disturbed HPA-axis activity, no effect on thymus and adrenals Kroon et al. (2018)
Mifepristone 200 mg/ kg DBA mouse oral infusion daily for 5 days, 2.5 h before amphetamine Suppressed basal and amphetamine-induced corticosterone secretion van der Veen et al. (2013)
Mifepristone 200 mg/kg mouse oral infusion, twice a day for 4 days Increased diabetes-induced ACTH and corticosterone levels, also in controls Revsin et al. (2009)
Mifepristone 600 mg per human, male or female daily for 8 days Increased basal am and pm ACTH and cortisol, steeper slopes Flores et al. (2006)
Mifepristone 600 mg/human (n = 5) vs control daily for 5 days, chronic insomnia 2 weeks post-treatment. Decreased cortisol and ACTH/cortisol ratio 18.00–23.00 h; Increased ACTH and cortisol 23.00–7.00 h Buckley et al. (2008)
Mifepristone 1200 mg/human, treatment effects on psychotic depression daily for 7 days, measurement on day 7, 14, 28, 56 Basal ACTH and cortisol elevated at day 7 and 14 (n = 837, MIF). Strongest association of MIF with clinical efficacy beyond ACTH and cortisol Block et al. (2017), Block et al. (2018)
MR antagonist 100 ng i.c.v. and s.c Increased basal and stress-induced corticosterone Ratka et al. (1989)
MR antagonist 100 ng & 5 ng i.c.v. & bilaterally dorsal hippocampus Increased basal ACTH and corticosterone during both conditions Van Haarst et al. (1997)