I've been researching the possible mechanisms behind Psychopathy, which is one of the few mental disorders currently regarded as ''untreatable'' or at least with a poor prognosis in the long term.
My findings have generally suggested an imbalance between the stress (HPA) system and the gonadal (HPG) axis.
J Abnorm Psychol. 2010 Dec 6. [Epub ahead of print]
Increased testosterone-to-cortisol ratio in psychopathy.
Glenn AL, Raine A, Schug RA, Gao Y, Granger DA.
Abstract
Only a few studies have examined hormones in psychopathy, and results have been mixed. It has been suggested that because hormone systems are highly interconnected, it may be important to examine multiple systems simultaneously to gain a clearer picture of how hormones work together to predispose for a certain construct. In the present study, we attempt to clarify the role of the hormones cortisol and testosterone in psychopathy by examining both hormones in a community sample of 178 adults demonstrating a wide range of psychopathy scores. Results showed that psychopathy scores were associated with an increased ratio of testosterone (baseline) to cortisol responsivity to a stressor. Psychopathy was not associated with either of these measures independently or with baseline cortisol levels. These findings suggest that these highly interconnected hormone systems may work in concert to predispose to psychopathy. (PsycINFO Database Record © 2010 APA, all rights reserved).
PMID: 21133509 [PubMed - as supplied by publisher]
Also refer to pages 251-265 of the book 'The Handbook of Psychopathy':
http://books.google.co.uk/books?id=OuNdrmHcJlgC&printsec=frontcover&dq=handbook+of+psychopathy&hl=en&ei=WSOfTZvKIePR4waDkZmHAw&sa=X&oi=book_result&ct=result&resnum=1&ved=0CDMQ6AEwAA#v=onepage&q&f=false
I have found information that suggests that 'Panax Ginseng' and 'Eleutherococcus Senticosus' may reverse this imbalance to a degree:
Med Hypotheses. 2001 May;56(5):567-72.
Panax ginseng and Eleutherococcus senticosus may exaggerate an already existing biphasic response to stress via inhibition of enzymes which limit the binding of stress hormones to their receptors.
Gaffney BT, Hügel HM, Rich PA.
Department of Human Biology and Movement Science, Faculty of Biomedical and Health Sciences and Nursing, Royal Melbourne Institute of Technology Bundoora Campus, Melbourne, Australia. bengaffney68@hotmail.com
Abstract
A mechanism of action for Panax ginseng (PG) and Eleutherococcus senticosus (ES) is proposed which explains how they could produce the paradoxical effect of sometimes increasing and sometimes decreasing the stress response. The mechanism suggests that this biphasic effect results from increased occupancy of positive and negative feedback stress hormone receptors by their natural ligands due to inhibition of specific enzymes which function to limit receptor occupancy. Specifically, it is suggested that PG inhibits 11-beta hydroxysteroid dehydrogenase one and ES inhibits catechol- O -methyl transferase, both of which reside in close proximity to stress hormone receptors and catalyse the degradation of stress hormones into inactive compounds. In addition, it is suggested that the increased energy said to result from PG and ES may be a consequence of their increasing the occupancy of stress hormone receptors which function to redistribute the body's energy reserves from regeneration to activity.
Copyright 2001 Harcourt Publishers Ltd.
PMID: 11388770 [PubMed - indexed for MEDLINE]
Also:
- the limit with this study clearly being limited to athletic performanceLife Sci. 2001 Dec 14;70(4):431-42.
The effects of Eleutherococcus senticosus and Panax ginseng on steroidal hormone indices of stress and lymphocyte subset numbers in endurance athletes.
Gaffney BT, Hügel HM, Rich PA.
School of Nursing. Faculty of Nursing and Health, Griffith University, Meadowbrook, Queensland, Australia. B.Gaffney@mailbox.gu.edu.au
Abstract
A clinical trial was undertaken to investigate the effects of Eleutherococcus senticosus (ES) and Panax ginseng (PG) on competitive club-level endurance athletes engaged in their normal in-season training. Participants were matched for training stress and received a 33% ethanolic extract (8 mL/day) containing either ES, PG (equivalent to 4 g and 2 g/day of dried root, respectively), or a placebo. A pre-test and post-test were used to evaluate the effects of six weeks of supplementation on cortisol, testosterone, and testosterone to cortisol ratio (TCR) as well as circulating numbers of total T-cells, T-helper cells (CD4), T-suppressor cells (CD8), CD4 to CD8 ratio, natural killer cells, and B lymphocytes. None of the immune system variables changed significantly nor showed any clear trend from pre to post test in any of the treatment groups. No significant change in testosterone, cortisol or TCR was observed in the PG group. In the ES group, however, TCR decreased by 28.7% from 0.0464 to 0.0331 (P=0.03). The main contribution to this decrease appeared to be a non-significant (P= 0.07) 31% trend towards increased cortisol rather than a very small non-significant (P = 0.36) 7% decrease in the calculated mean for testosterone. This result suggested that contrary to initial expectation, ES increased rather than decreased hormonal indices of stress, which may be consistent with animal research suggesting a threshold of stress below which ES increases the stress response and above which ES decreases the stress response.
PMID: 11798012 [PubMed - indexed for MEDLINE]
Do you guys think this may be worth further investigation?
Edited by agwoodliffe, 08 April 2011 - 03:03 PM.