scholarly journals Brief Study of the Immune System and A Large Sea of Pathogens and Other things Side A

Author(s):  
Valdecir de Godoy Borges

And I will destroy any man who dares to abuse my trust, I promise that you will be mine (Queen 1973) We begin and brief study with this song to illustrate in a simple and interesting way because aimunology itself is something extremely interesting the flagship the captain this boat will be the book cell and molecular immunology by Abul K Abbas, Andrew H. Liichtman and Shiv Pllai we will start from a hypothetical situation of a region injured by a piercing instrument that penetrates the skin layers and skeletal muscle tissues based on this arrangement as we will discuss in this case DAMPs Molecular Patterns Associated with Damages and PAMPs molecular patterns associated with pathogens in this part of the study we stick to pathogens linked to amino acids and their formation in chains of proteins TH1 and TH2 that would be mechanisms of intracellular aggressions such as viruses and microbacteria and mechanisms that attack ectracellular cells like bacteria in the hypotonic situation ethics that we comment on an instrument any sharp drill when the layers of the cells the phosphopipidic layers are injured and all extracellular content moves to the extracellular medium begins with a response called innate or cellular that is given by immune cells intact as macrophages dendritic cells are very important in the presentation of phagocyte antigens also obviously to a perception of the central nervous system pain and a conscious state  this information reaches the cerebral cortex pain and is detected by nociceptors in response the central nervous system releases substance P in this initiation of injury the cells begins an inflammatory process and the damaged cell members these phospholipids generate the cascade of arachidonic acid in this process if this injury is resolved everything is solved with the first phase of defense which is the innate or cellular system in case of intra or intra pathogens extracellular remains and start m a process of aggression to the organism starts the second part of the defense that is acquired that has specific responses for extracellular and intra cellular pathogenic organisms the complementary immune system we did not address in this work this article is dedicated to my esteemed professors of the medical school São Judas Tadeu Cubatão

Author(s):  
Ezzatollah Keyhani

Acetylcholinesterase (EC 3.1.1.7) (ACHE) has been localized at cholinergic junctions both in the central nervous system and at the periphery and it functions in neurotransmission. ACHE was also found in other tissues without involvement in neurotransmission, but exhibiting the common property of transporting water and ions. This communication describes intracellular ACHE in mammalian bone marrow and its secretion into the extracellular medium.


Life ◽  
2021 ◽  
Vol 11 (4) ◽  
pp. 300
Author(s):  
Petr Kelbich ◽  
Aleš Hejčl ◽  
Jan Krejsek ◽  
Tomáš Radovnický ◽  
Inka Matuchová ◽  
...  

Extravasation of blood in the central nervous system (CNS) represents a very strong damaged associated molecular patterns (DAMP) which is followed by rapid inflammation and can participate in worse outcome of patients. We analyzed cerebrospinal fluid (CSF) from 139 patients after the CNS hemorrhage. We compared 109 survivors (Glasgow Outcome Score (GOS) 5-3) and 30 patients with poor outcomes (GOS 2-1). Statistical evaluations were performed using the Wilcoxon signed-rank test and the Mann–Whitney U test. Almost the same numbers of erythrocytes in both subgroups appeared in days 0–3 (p = 0.927) and a significant increase in patients with GOS 2-1 in days 7–10 after the hemorrhage (p = 0.004) revealed persistence of extravascular blood in the CNS as an adverse factor. We assess 43.3% of patients with GOS 2-1 and only 27.5% of patients with GOS 5-3 with low values of the coefficient of energy balance (KEB < 15.0) in days 0–3 after the hemorrhage as a trend to immediate intensive inflammation in the CNS of patients with poor outcomes. We consider significantly higher concentration of total protein of patients with GOS 2-1 in days 0–3 after hemorrhage (p = 0.008) as the evidence of immediate simultaneously manifested intensive inflammation, swelling of the brain and elevation of intracranial pressure.


2019 ◽  
Vol 26 (1) ◽  
Author(s):  
Alejandro Quintero-Villegas ◽  
Sergio Iván Valdés-Ferrer

AbstractIn mammalians, serotonin (5-HT) has critical roles in the central nervous system (CNS), including mood stability, pain tolerance, or sleep patterns. However, the vast majority of serotonin is produced by intestinal enterochromaffin cells of the gastrointestinal tract and circulating blood platelets, also acting outside of the CNS. Serotonin effects are mediated through its interaction with 5-HT receptors (5-HTRs), a superfamily with a repertoire of at least fourteen well-characterized members. 5-HT7 receptors are the last 5-HTR member to be identified, with well-defined functions in the nervous, gastrointestinal, and vascular systems. The effects of serotonin on the immune response are less well understood. Mast cells are known to produce serotonin, while T cells, dendritic cells, monocytes, macrophages and microglia express 5-HT7 receptor. Here, we review the known roles of 5-HT7 receptors in the immune system, as well as their potential therapeutic implication in inflammatory and immune-mediated disorders.


Physiology ◽  
2000 ◽  
Vol 15 (5) ◽  
pp. 250-255
Author(s):  
Michael A. Klein ◽  
Adriano Aguzzi

Prion diseases are fatal neurodegenerative disorders of animals and humans. Here we address the role of the immune system in the spread of prions from peripheral sites to the central nervous system and its potential relevance to iatrogenic prion disease.


2020 ◽  
Vol 17 (1) ◽  
Author(s):  
John Michael S. Sanchez ◽  
Daniel J. Doty ◽  
Ana Beatriz DePaula-Silva ◽  
D. Garrett Brown ◽  
Rickesha Bell ◽  
...  

Abstract Background Multiple sclerosis (MS) is an inflammatory demyelinating disease that affects 2.5 million people worldwide. Growing evidence suggests that perturbation of the gut microbiota, the dense collection of microorganisms that colonize the gastrointestinal tract, plays a functional role in MS. Indeed, specific gut-resident bacteria are altered in patients with MS compared to healthy individuals, and colonization of gnotobiotic mice with MS-associated microbiota exacerbates preclinical models of MS. However, defining the molecular mechanisms by which gut commensals can remotely affect the neuroinflammatory process remains a critical gap in the field. Methods We utilized monophasic experimental autoimmune encephalomyelitis (EAE) in C57BL/6J mice and relapse-remitting EAE in SJL/J mice to test the effects of the products from a human gut-derived commensal strain of Lactobacillus paracasei (Lb). Results We report that Lb can ameliorate preclinical murine models of MS with both prophylactic and therapeutic administrations. Lb ameliorates disease through a Toll-like receptor 2-dependent mechanism via its microbe-associated molecular patterns that can be detected in the systemic circulation, are sufficient to downregulate chemokine production, and can reduce immune cell infiltration into the central nervous system (CNS). In addition, alterations in the gut microbiota mediated by Lb-associated molecular patterns are sufficient to provide partial protection against neuroinflammatory diseases. Conclusions Local Lb modulation of the gut microbiota and the shedding of Lb-associated molecular patterns into the circulation may be important physiological signals to prevent aberrant peripheral immune cell infiltration into the CNS and have relevance to the development of new therapeutic strategies for MS.


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