Neuroblastoma is a rare type of cancer that develops in certain types of nerve tissue. This cancer usually occurs in children under the age of five and is one of the most common forms of childhood cancer. It is a malignant tumor that develops from immature nerve cells found in various parts of the body. […]
ADRENAL GLANDS: AN OVERVIEW The adrenal glands, also scientifically termed the suprarenal glands, are two crucial endocrine organs situated superiorly atop each kidney within the retroperitoneal space. These small, pyramid-shaped structures are indispensable regulators of human physiology, serving as the central factories for hormones that modulate key survival mechanisms. Their primary roles encompass the precise […]
Introduction and Definition Norepinephrine, scientifically designated as L-Norepinephrine and widely known by its synonym noradrenaline (NA or NE), functions as both a crucial neurotransmitter within the nervous system and a vital hormone released by the adrenal medulla. It is a fundamental biogenic amine that plays an indispensable role in maintaining systemic homeostasis, particularly in mediating […]
Introduction and Definition of Neuropeptide Y (NPY) Neuropeptide Y, often abbreviated as NPY, is a highly conserved 36-amino acid peptide neurotransmitter that belongs to the pancreatic polypeptide family, which also includes pancreatic polypeptide (PP) and peptide YY (PYY). Synthesized primarily within the central and peripheral nervous systems, NPY exerts profound regulatory control over numerous physiological […]
Introduction and Definition of Aldosteronism Aldosteronism represents a significant endocrinological disorder characterized by the excessive and inappropriate secretion of the mineralocorticoid hormone, aldosterone, typically leading to disturbances in electrolyte balance, volume regulation, and cardiovascular homeostasis. This diseased state profoundly impacts the body’s ability to manage sodium and potassium levels, resulting fundamentally in the retention of […]
Cortisol: The Neuroendocrine Mediator of Stress The Core Definition of Cortisol and Its Function Cortisol, often dubbed the primary stress hormone, is a potent steroid hormone belonging to the class of glucocorticoids. It is synthesized, stored minimally, and released by the adrenal glands, specifically the zona fasciculata of the adrenal cortex, acting as a crucial […]