M microglia are the major effector cells with the potential to dampen Thymine proinflammatory immune responses and promote the repair genes expression. Four major antiinflammatory Benzyl alcohol cytokines including IL, IL, IL, and TGF are employed by M microglia to antagonize the proinflammatory responses. IL and IL are welldescribed antiinflammatory cytokines, which could suppress the production of proinflammatory cytokines such as IL, IL, and TNF, and reduce NO release, which collectively protect against lipopolysaccharide induced neuron injury both in vitro and in vivo. Arg is a typical marker for M macrophagemicroglia activation that participates in arginine metabolism.On one hand, arginine is catalyzed by iNOS to produce citrulline and NO.For instance, hydroxyproline and proline are important sources of collagen synthesis, or by large, ECM synthesis that helps to physically strengthen the tissue and are also used for repair at the sites of injury. Polyamines such as spermines are multivalent cations required for cell proliferation and differentiation. Arg is induced by IL or IL insult and produced antiinflammatory effects by competing utilization of the common substrate arginine to suppress NO production. FIZZ belongs to the resistinl ike mo lecu le family of secre ted mammalian proteins, the members of which are upregulated in several infectious and inflammatory settings, including helminthinfection, allergic airw ayinflamm ation, andcolitis. F IZZ promotes the activation of innate immune cells in the intestine, including macrophages and eosinophils, in the chemically induced colitis. FIZZ may also contribute to insulin resistance linking with the effects of promotion of angiogenesis, stimulation of collagen synthesis, and inhibition of apoptosis. Heparin sulfate serves as a docking site for growth factors in the ECM and is degraded by heparinases during inflammation.Ym thus acts by binding to heparin so as to slow the loss of growth factors which may be required for the tissue reconstruction and is essential for alternative activation of the microgliamacrophages that are antagonized by LPS and interferon. CD C D is atr ansmembraneglycoproteininthemacrophagemicroglia or dendrite cells and is a memberoftheC typelectinfamily. To ensure inflammatory agents are removed, CD is expressed at low levels during inflammation and at high levels during the resolution of inflammation. In general, CD initiates phagocytosis of its ligand and activates immunosuppressive pathways that results in decreased TNF and IL, whereas increased the expression levels of anti inflamma to ry fac to rs such as IL and IL R. In line with the immunosuppressive effects, CD is a characteristic of the alternative activated state that could promote CNS repair in the spinal cord injury while limiting secondary inflammatorymediated injury. Microgliamediated neuroinflammation is an important component in PD pathogenesis that shows inversely correlated with the DA neuron survival in patients. In general, activated microglia are prominent and surround DA neurons exhibiting classically activated M phenotypes.Among those neurodegenerative diseases, the role and function of M microglia specifically in PD are not well studied.Numerous studies have shown that aggrega ted synuc le in re leased in to the ex tracellu lar space from dying or dead DA neurons can directly induce microglia towards M phenotype with the activation of NADPH ox ida se, inc reasingproduct ionof ROS and proinflammatory cytokines.