THE HYPOTHALAMIC PITUITARY-ADRENAL AXIS AND STRESS FHS Signalling ** strongly recommended reads If you only read one article read: ** Buckingham JC (2006). Glucocorticoids: exemplars of multi-tasking. Br J Pharmacol. 147: S258-268 Reader friendly review of the stress/glucocorticoids field. Excellent overview -good for perspective of whole topic. General reviews/commentary: De Kloet et al (2005) Stress and the brain: from adaptation to disease. Nature reviews Neuroscience 6:463-75 De Kloet et al (2009) Glucocorticoid signalling and stress related limbic pathway. Brain research 1293:129-41 **McEwen (1998) Damaging effects of stress mediators in man. N Engl J Med 338:171-179 Great review of the human/HPA stress literature field **Blaustein (2011) Nearby construction influences the physiology of research animals. Endocrinology 152:1197 *Kennedy (2011) Stress and the city. Nature 474:452 Pulsatility of ACTH and cortisol release Gillies G et al (1982) ACTH releasing activity of CRF is potentiated by AVP. Nature 299:355-357. First evidence for a role of AVP in control of pituitary ACTH release-seminal work Atkinson et al (1997) Variations in the HPA response during the estrous cycle in rat. Endocrinol 138:3842-3848. **Windle et al (1998) Ultradian rhthym of basal corticosterone release. Endocrinol 139:443-450. This was the first use of automated rapid blood sampling methods to measure rapid changes in plasma cortisol in vivo in rats. Lightman et al (2008) ‘The significance of glucocorticoid pulsatility’ Eur J Pharmacol 583:255-262. Adaptation to stress Ma et al (1998) AVP and CRF gene transcription responses to repeated stress. J Physiol 510.2:605-614. Transgenic mouse experimental models *CRH KO: Muglia et al (1995) CRH deficiency reveals fetal but not adult glucocorticoid need. Nature 373:427-32. CRH Receptor1 KO: Muller et al (2000) Activation of vasopressin system in CRHR1 KO. Endocrinology 141:426269. *Vasopressin Receptor KO: Lolait et al (2007) The hypothalamic-pituitary-adrenal axis response to stress in mice lacking functional vasopressin V1b receptors. Endocrinology 148(2):849-56 GR KO pituitary: Erdmann et al (2008) Loss of glucocorticoid receptor function in the pituitary results in early postnatal lethality. Endocrinology 149:3446-51 Cre-loxP recombination system used to target deletion of GR in mouse pituitary GR KO brain: Tronche et al (1999) Disruption of the GR gene in the nervous system results in reduced anxiety. Nat Genet 23:99-103 11bHSD1 KO: Carter et al (2009) HPA axis abnormalities in response to deletion of 11bHSD1 is strain dependent. J Neuroendocrinol 21:879-887 MR KO forebrain: Berger et al (2006) Loss of the limbic mineralocorticoid receptor impairs behavioural plasticity. PNAS 103:195-200 Cre-loxP recombination system used to target deletion of MR in mouse forebrain ‘Programming’ of the HPA axis Seckl & Holmes (2007) Mechanisms of disease: glucocorticoids, their placental metabolism and fetal ‘programming’ of adult pathophysiology. Nature Clinical Practice Endocrinol Metabolism 3:479-488 **Liu et al (1997). Maternal care and HPA responses to stress. Science 277:1659-166 McGowan et al (2009) Epigenetic regulation of the GR in human brain associates with childhood abuse. Nature Neuroscience. Alexander et al (2012) Impact of antenatal synthetic glucocorticoid exposure on endocrine stress reactivity in term-born children. J Clin Endocrinol Metab And commentary: Challis (2012) Stress responses in children after maternal glucocorticoids Nature Reviews Endocrinology 8:629 Diabetes Gathercole & Stewart (2010) Targeting the pre-receptor metabolism of cortisol as a novel therapy in obesity and diabetes. J Steroid Biochem Mol Biol, in press Obesity Dallman (2009). Stress-induced obesity and the emotional nervous system. Trends Endocrinol Metabolism 21:159 Serlachius et al (2007) Stress and weight change in university students in the UK. Physiol Behav 92:548-553 Circadian Balsalobre et al (2000) Resetting of circadian time in peripheral tissues by glucocorticoid signalling. Science 289:2344 Debona et al 2009 Inadequacies of glucocorticoid replacement and improvements by physiological circadian therapy. Eur J Endocrinol 160:719-729 Depression Pariante & Lightman (2008) The HPA axis in major depression. TIPS 31:464-468 Good recent review of the current understanding of HPA activity and depression – chicken or egg debate Sheline et al (1996) Hippocampal atrophy in depression. PNAS 93:3908-3913. Original evidence for atrophy of the hippocampus and stress Epithelial transport Boudry et al (2007) Psychological stress impairs Na dependent glucose absorption and increases GLUT2 expression in the rat brush border membrane. Am J Physiol Regul Integr Comp Physiol 292:R862 Non-genomic rapid actions of glucocorticoids Hinz et al (2000) Rapid non-genomic feedback effects of glucocorticoids on ACTH secretion in rats. Pharm Res 17:1273-1277 Di et al (2003) Non genomic glucocorticoid inhibition via endocannabinoid release in the hypothalamus. J Neurosci 23:4850-57 Evanson et al (2010) Fast feedback inhibition of HPA axis by glucocorticoids is mediated by endocannabinoid signalling. Endocrinology 151:4811-19 Reproduction Kalantaridou et al (2010) CRH, stress and human reproduction: an update. J Reproductive Immunol 85:33-39 Neumann et al (2003) No stress response of HPA in pregnant rats. Endocrinology 144:2473-79