Sympathetic Activity, Blood Volume, and Smoking

Sodium-induced cardiac hypertrophy. Cardiac sympathetic activity versus volume load.

To investigate the possible contributions of cardiac volume overload and cardiac sympathetic hyperactivity in the effects of sodium on cardiac mass, we evaluated the effects of treatment with saline (1%) and deoxycorticosterone acetate + saline (DOCA/saline) for 10 days and 3 and 6 weeks on ventricular anatomy and intracardiac pressures. Sympathetic activity in the heart and other tissues was a...

Point:Counterpoint: Sympathetic activity does/does not influence cerebral blood flow. Point: Sympathetic activity does influence cerebral blood flow.

Cerebral arteries are abundantly innervated by sympathetic fibers, but their influence on cerebral vessels was held unimportant for almost a century (2, 20). Whether there is sympathetic influence on cerebral blood flow (CBF) is important in the management of hypotensive patients. If there is no -adrenergic influence on CBF, a low mean arterial pressure (MAP) can be increased to the cerebral au...

Dynamic changes in splanchnic blood flow and blood volume in dogs during activation of sympathetic nerves.

Familial hypertension, insulin, sympathetic activity, and blood pressure elevation.

This study evaluated the effects of a positive family history of hypertension (FH+) on the contributions of sympathetic nervous system (SNS) activity and insulin to blood pressure elevation (BPE). The study design was longitudinal and evaluated BP, body mass index (BMI), and fasting plasma insulin and norepinephrine (NE) levels for 10 years in 557 young, nonobese Japanese men who were normotens...

Sports Activity and Smoking, Alcohol and Drug Abuse among Students

Background. Despite the research being accomplished so far, there is no clear answer to the question that "Does sports help to prevent and reducing the abuse of drug, alcohol, and smoking in young people as it believed in public". Objective(s). The purpose of this study was to investigate the relationship between sports activity and experience of smoking, alcohol and drug abuse among...