ProHealth health Vitamin and Natural Supplement Store and Health
Home  |  Log In  |  My Account  |  View Cart  View Your ProHealth Vitamin and Supplement Shopping Cart
800-366-6056  |  Contact Us  |  Help
Facebook Google Plus
Fibromyalgia  Chronic Fatigue Syndrome & M.E.  Lyme Disease  Natural Wellness  Supplement News  Forums  Our Story
Store     Brands   |   A-Z Index   |   Best Sellers   |   New Products   |   Deals & Specials   |   Under $10   |   SmartSavings Club

Trending News

Ultrasound Therapy for Fibromyalgia and Lyme Disease

Curcumin: The All In One Solution, Part 2

What Are the Benefits of Vitamin K2?

Vitamin D deficiency + high fat diet = metabolic syndrome

Why You Should Take Your Apple Cider Vinegar at Night

Use Burdock Oil to Promote Healthy Hair Growth

Meet Your Weight Loss Goals

AMA journal associates iron deficiency with hearing loss

People with forms of early-onset Parkinson's disease may benefit from boosting niacin in diet, resea...

Lutein linked to preservation of crystallized intelligence

 
Print Page
Email Article

Enhanced Serotonin Transporter Function During Depression in Seasonal Affective Disorder – Source: Neuropsychopharmacology, Sep 19 2007

  [ 231 votes ]   [ Discuss This Article ]
By M Willeit, et al. • www.ProHealth.com • October 10, 2007


[Note: This research pertains to winter-onset SAD, vs. the summer-onset SAD, more prevalent at lower latitudes. See also "Contrasts between symptoms of summer depression and winter depression."]

Decreased synaptic serotonin during depressive episodes is a central element of the monoamine hypothesis of depression. The serotonin transporter (5-HTT, SERT) is a key molecule for the control of synaptic serotonin levels.

Here we aimed to detect state-related alterations in the efficiency of 5-HTT-mediated inward and outward transport in platelets of drug-free depressed patients suffering from seasonal affective disorder (SAD). 5-HTT turnover rate, a measure for the number of inward transport events per minute, and tyramine-induced, 5-HTT-mediated outward transport were assessed at baseline, after 4 weeks of bright light therapy, and in summer using a case-control design in a consecutive sample of 73 drug-free depressed patients with SAD and 70 nonseasonal healthy controls.

Patients were drug-naive or medication-free for at least 6 months prior to study inclusion, female patients were studied in the follicular phase of the menstrual cycle. All participants were genotyped for a 5-HTT-promoter polymorphism (5-HTTLPR) to assess the influence of this polymorphism on 5-HTT parameters. Efficiency of 5-HTT-mediated inward (p=0.014) and outward (p=0.003) transport was enhanced in depressed patients.

Both measures normalized toward control levels after therapy and in natural summer remission. Changes in outward transport showed a clear correlation with treatment response (rho=0.421, p=0.001). Changes in inward transport were mediated by changes in 5-HTT transport efficiency rather than affinity or density. 5-HTTLPR was not associated with any of the 5-HTT parameters.

In sum, we conclude that the 5-HTT is in a hyperfunctional state during depression in SAD and normalizes after light therapy and in natural summer remission.

Source: Neuropsychopharmacology. 2007 Sep 19; PMID: 17882235, by Willeit M, Sitte HH, Thierry N, Michalek K, Praschak-Rieder N, Zill P, Winkler D, Brannath W, Fischer MB, Bondy B, Kasper S, Singer EA. Department of Biological Psychiatry, Medical University of Vienna, Vienna, Austria.





Post a Comment

Featured Products From the ProHealth Store
Energy NADH™ 12.5mg FibroSleep™ Ultra EPA  - Fish Oil

Looking for Vitamins, Herbs and Supplements?
Search the ProHealth Store for Hundreds of Natural Health Products


Article Comments



Be the first to comment on this article!

Post a Comment


 
NAD+ Ignite with Niagen

Featured Products

Mitochondria Ignite™ with NT Factor® Mitochondria Ignite™ with NT Factor®
Reduce Fatigue up to 45%
Energy NADH™ 12.5mg Energy NADH™ 12.5mg
Improve Energy & Cognitive Function
Vitamin D3 Extreme™ Vitamin D3 Extreme™
50,000 IU Vitamin D3 - Prescription Strength
Ultra EPA  - Fish Oil Ultra EPA - Fish Oil
Ultra concentrated source of essential fish oils
Ultra ATP+, Double Strength Ultra ATP+, Double Strength
Get energized with malic acid & magnesium

Natural Remedies

Anti-Inflammatory Properties of Tart Cherry Anti-Inflammatory Properties of Tart Cherry
Are You Obtaining the Proper Enzymes? Are You Obtaining the Proper Enzymes?
Secret Nutrient for Radiant Skin Secret Nutrient for Radiant Skin
Three-Step Strategy to Reverse Mitochondrial Aging Three-Step Strategy to Reverse Mitochondrial Aging
The Brain Boosting and Fatigue Fighting B-12 The Brain Boosting and Fatigue Fighting B-12

CONTACT US
ProHealth, Inc.
555 Maple Ave
Carpinteria, CA 93013
(800) 366-6056  |  Email

· Become a Wholesaler
· Vendor Inquiries
· Affiliate Program
SHOP WITH CONFIDENCE
Credit Card Processing
SUBSCRIBE TO OUR NEWSLETTERS
Get the latest news about Fibromyalgia, M.E/Chronic Fatigue Syndrome, Lyme Disease and Natural Wellness

CONNECT WITH US ProHealth on Facebook  ProHealth on Twitter  ProHealth on Pinterest  ProHealth on Google Plus

© 2017 ProHealth, Inc. All rights reserved. Pain Tracker App  |  Store  |  Customer Service  |  Guarantee  |  Privacy  |  Contact Us  |  Library  |  RSS  |  Site Map