L-Tryptophan in Depression and Strain

نویسنده

  • M. J. A. J. M. Hoes
چکیده

This paper is a report by the author of his Ph.D. Thesis. When the organism is put under exertion (load), changes in the organism result (strain). The strain is counteracted by forces mobilized in the body (stress). Stress is a physiological phenomenon. If people become ill from any type of exertion, this will, by definition be the result of strain. The (biological) changes observed in ill people can be classified as: 1) specific to the clinical picture, or 2) strain phenomenon, or 3) stress phenomenon, or 4) incidental finding. The psychic expression of strain is the mood disorder anxiety, even when the mood disorder depression causes the strain. L-tryptophan, an amino acid, is converted in the body into (a) serotonin (5-hydroxytryptamine, 5-HT), a neurotransmitter of the raphe neuronen in the brain, and into

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Evaluation of the effect of soybean diet on interferon-α-induced depression in male mice

Objective: Interferon-α (IFN) therapy can cause depressive symptom which may lead to drug discontinuation. By interfering with tryptophan pathway, the available level of tryptophan required for serotonin synthesis decreases which could be related to depression. The aim of this study was to evaluate whether soybean diet could improve IFN-induced depression. Materials and Methods: Male mice weigh...

متن کامل

Xanthurenic Acid in Depression

An altered or increased excretion of xanthurenic acid (XA) in urine for 24h after intake of 5 grams L-tryptophan (Trp) at 10:00 p.m. is considered a measure of strain in the organism. XA was studied in 104 hospitalized depressive patients (DSM-HI : 296.23; 296.33) and 15 controls. Zung anxiety and depression scales were rated. The XA-excretion after Trp load has a wider range than the blank XA-...

متن کامل

P 78: The Role of Kynurenine Pathway in Suicidal Behavior and Depression

According to global statistics, over 80,000 deaths occur by suicide annually. Up to 90% of complete suicides are based on psychiatric disorders specifically major depressive disorder (MDD) and bipolar disorder. Furthermore high levels of inflammation have been indicated in suicidal patients in both central nervous system and the peripheral blood. Two biological mechanisms that play a key role i...

متن کامل

Effect of Dietary Melatonin and L-Tryptophan on Growth Performance and Immune Responses ofBroiler Chicken under Experimental Aflatoxicosis

The aim of the present work was to determine whether the administration of melatonin or L­-tryptophan (a precursor of melatonin) affects the immune responses and performance of broilers during induced exposure to aflatoxins in feed. The study was conducted from 0-6 weeks comprising six dietary treatments in triplicate with10 chickens in each replicate. The diets were formulated to supply 23% cr...

متن کامل

Arbuscular Mycorrhizal fungi and precursor feeding improve protein and trypthopan decarboxylase enzyme content in Cathaaranthus roseus L. Samaneh Rahmatzadeh1*, Jalil Khara1 and Seyed Kamal Kazemitabar2

To obtain a better understanding of the mycorrhizas as an elicitor, and precursor feeding effects on the protein content and TIAs biosynthesis in Catharanthus roseus L., foliar application of four concentrations of tryptophan (0, 150, 250 and 350 mg/l) on some growth parameters and chemical compositions of mycorrhizal plants were investigated. The results revealed that the total protein content...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2007