Humoral control of airway tone.

Humoral control of airway tone.

Reflex regulation of airway smooth muscle tone.

Autonomic nerves in most mammalian species mediate both contractions and relaxations of airway smooth muscle. Cholinergic-parasympathetic nerves mediate contractions, whereas adrenergic-sympathetic and/or noncholinergic parasympathetic nerves mediate relaxations. Sympathetic-adrenergic innervation of human airway smooth muscle is sparse or nonexistent based on histological analyses and plays li...

Tracheal microenvironment, ANP metabolism and airway tone

Asthma is a chronic inflammatory disease, characterized by reversible airflow obstruction and airway hyperresponsiveness. There has been a sharp increase in the prevalence, morbidity, mortality and economic burden associated with this disorder over the last several decades, which triggers the development of various antiasthmatic agents [1]. Maintenance of airway tone is the key in asthma therap...

control of the optical properties of nanoparticles by laser fields

در این پایان نامه، درهمتنیدگی بین یک سیستم نقطه کوانتومی دوگانه(مولکول نقطه کوانتومی) و میدان مورد مطالعه قرار گرفته است. از آنتروپی ون نیومن به عنوان ابزاری برای بررسی درهمتنیدگی بین اتم و میدان استفاده شده و تاثیر پارامترهای مختلف، نظیر تونل زنی(که توسط تغییر ولتاژ ایجاد می شود)، شدت میدان و نسبت دو گسیل خودبخودی بر رفتار درجه درهمتنیدگی سیستم بررسی شده اشت.با تغییر هر یک از این پارامترها، در...

Regulation of cerebral blood vessels by humoral and endothelium-dependent mechanisms. Update on humoral regulation of vascular tone.

Recent studies suggest that humoral and endothelium-dependent mechanisms may play an important role in the cerebral circulation. Angiotensin may acutely and chronically increase resistance of large cerebral arteries and reduce cerebral microvascular pressure without changing cerebral blood flow. We hypothesize that the brain may sense reductions in microvascular pressure and initiate compensato...