Tobacco smoking is a global health problem. The association of a functional common
polymorphism in the catechol-o-methyltransferase gene (COMT Val158Met) with smoking …

Pectin is a natural biopolymer, and a major component of a complex heterogeneous
polysaccharide found in the primary cell walls and middle lamella of plant tissues. This …

Objectives There is overwhelming evidence of the relationship between smoking and
schizophrenia (SZ). Tobacco smoke is considered to ameliorate the symptoms and reduce …

Background Khat chewing effects in the central nervous system are attributed to cathinone
and cathine, which are structurally related to amphetamine. However, studies on …

OBJECTIVE: To study white matter integrity with diffusion tensor imaging in adolescents with
prenatal cocaine exposure, tobacco exposure, or both. STUDY DESIGN: Subjects included …

Background: It has been hypothesized that smoking is associated with the severity of
negative symptoms. Until now, no studies have investigated whether the impact of smoking …

Adolescence is a critical period for neurodevelopment. MK-801 treatment and social
isolation are important animal models for various neurodevelopmental disorders …

The suicide rate of Hungary is the highest in the world averaged over the last century but it
has shown a very pronounced decrease since 1987. To explore the background of this …

Alkaloids are nitrogen-containing, mostly alkaline organic compounds and constitute the
second most diverse group of secondary metabolites in plants after terpenoids (Roberts and …

Patients with schizophrenia (SCZ) smoke up to three times more than general people.
However, there are conflicting results regarding the relationship between tobacco smoke …