Many mammalian AQPs, including AQP1, AQP2, AQP4, AQP5 and AQP8, function primarily as bidirectional water-selective transporters. Cells expressing AQPs on their plasma membrane have an ~5- to 50-fold higher osmotic water permeability than membranes that do not. Water transport through single-file pores poses a biophysical limitation on the efficiency with which AQPs can transport water, so that...

one of the important reasons for death among the worldwide’s population is trauma which is injury or damage to a biological organism caused by physical harm from an external source. after trauma, the immune system and the early inflammatory immune response activation lead to massive injury. trauma causes activation of nearly all components of the immune system; it also activates the neuroendocr...

our goal in this paper is to describe and compare basic immunopathologic pattern of common demyelinating disorder, that is very important to choose the best treatment. The most common disorders are multiple sclerosis, neuromyelitis optica,Anti MOG associated disease,ADEM and autoimmune encephalitis. ADEM consists of ‘‘sleeves’’ of demyelination centered on small, engorge...

Post traumatic stress disorder, a special disease that also accompanies with histological changes such as inflammation. In this paper we decided to review the relation between PTSD and inflammation. Stressful events causes immune system dysfunction by suppressing natural killer cells and altering levels of cytokines. Also in this condition, cytotoxic T lymphocytes results in under strained pro-...

Human T-lymphotrophic virus type 1 (HTLV-1) is a retrovirus that is thought to infect approximately 10-20 million people worldwide. The majority of infected individuals remain asymptomatic carriers lifelong. HTLV-1 is thought to cause both local and systemic inflammatory diseases. The most common inflammatory condition associated with HTLV-1 is HTLV-1 associated myelopathy/Tropical spastic para...

Inflammatory condition is the consequence of defensive mechanism of immune system against viral and bacterial infection, tissue injury, UV radiation, stress and etc. Persistently acute inflammation leads to chronic phase which is characterized by production of pro-inflammatory mediators from T cells. These molecules (e.g. IL-6, TNF-&alpha, IL-1&beta and IL-17) are mostly pleiotropic cytokines i...

Ischemic stroke has been classified as a merely thrombotic disease, so the main goal of its treatment is the recanalization of the occluded vasculature. However, despite fast restoration of blood circulation, progressive stroke still develops in many patients, which has led to the concept of reperfusion injury.  The underlying mechanism is only partly known. Though, it is accepted now, tha...

Traumatic brain injury (TBI) is a significant public health concern in our country, because of placing in top three most common causes of death and substantial direct and indirect costs to society. The incidence of TBI in our country is 1.7 times of international incidence. Traumatic brain injury induced by primary and secondary mechanisms that give rise to death and neurologic morbidity in pat...