Immunity to Neisseria gonorrhoeae PDF Download
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Author: Michael W. Russell
Publisher: Frontiers Media SA
ISBN: 2889639614
Category : Medical
Languages : en
Pages : 167
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Book Description
Author: Michael W. Russell
Publisher: Frontiers Media SA
ISBN: 2889639614
Category : Medical
Languages : en
Pages : 167
Get Book Here
Book Description
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Lisa M. Chamberlain
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Trevor Charles Fudyk
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Author: Masoud H. Manjili
Publisher:
ISBN: 9781621009290
Category : Cytokines
Languages : en
Pages : 0
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Book Description
Cells of the immune system communicate with each other, and respond to abnormal conditions by releasing soluble proteins, named cytokines. Abnormal or dangerous conditions include infection, trauma and injury, neurological disorders, and cancer. The balance between pro- and anti-inflammatory cytokines can comfort or exacerbate the symptoms in these diseases. This book focuses on counter-regulatory and the role of cytokines in different diseases. The goal is to understand contribution of cytokines in the progression of the disease as well as therapeutic potential of cytokines in the treatment of the disease by understanding cytokine counter-regulation.
Author: Donnie Pickel
Publisher:
ISBN:
Category : Complement (Immunology)
Languages : en
Pages : 103
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Book Description
Antimicrobial resistant Neisseria gonorrhoeae (Ng) is an urgent threat to public health worldwide. Ng causes gonorrhea, the second most prevalent sexually transmitted bacterial infection. Left untreated, gonorrhea can lead to pelvic inflammatory disease, ectopic pregnancy, sterility, and in men can increase susceptibility to HIV. The current recommended treatment is a dual therapy with two antibiotics azithromycin and ceftriaxone. However, many countries are reporting cases with reduced effectiveness of this treatment method. This has placed a greater urgency on the development of preventative therapeutics. There is currently no commercial vaccine available for Ng infection. The development of preventative treatment strategies has long been impeded by Ng’s ability to evade the immune system, particularly the complement system. Ng is an obligate human pathogen and has evolved numerous mechanisms to interact with host-derived molecules that negatively regulate the activation of the immune system. Previous characterization of these mechanisms has focused on one class of complement inhibitors, fluid-phase inhibitors. To fully understand Ng immune evasion and the host molecules that contribute to it, investigating the role of the other class of complement inhibitors, membrane-associated complement inhibitors (mCIs) is needed. mCIs like CD46, CD55, and CD59 are expressed by human epithelial cells to prevent formation of the membrane attack complex on the surface of human cells. I hypothesized that these proteins may be sequestered by Ng during infection and create localized regions of immune activation allowing Ng to persist. To test this, we used a co-culture serum bactericidal assay (ccSBA) where human epithelial cells were infected with Ng, treated with normal human serum, a vehicle for the components of the complement system, and monitored bacterial viability over time. Using the ccSBA we demonstrated that increasing host expression of mCIs resulted in higher levels of Ng survival, while decreasing mCI expression resulted in lower Ng survival. We then used CRISPR to knock out all three of CD46, CD55, and CD59 simultaneously. Surprisingly, this had the opposite effect of what we expected, resulting in a substantial increase in Ng survival. We observed that the lack of mCIs rendered host cells susceptible to complement and speculated that this could result in the release of host-derived molecules that stimulated an alternative mechanism of Ng immune evasion. We used a strain of Ng deficient in this alternative mechanism and found that the absence of mCI expression resulted in a significant reduction in Ng survival. Finally, we expressed each of CD46, CD55, and CD59 individually and found that all three could support Ng survival alone. In summary, this dissertation shows that mCIs are involved in Ng immune evasion. Further it demonstrates the value of the ccSBA in investigating the role of host-derived molecules in Ng immune evasion.
Author: Wendy Nicole Dobson-Belaire
Publisher:
ISBN: 9780494777848
Category :
Languages : en
Pages :
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Author: Mónica Imarai
Publisher:
ISBN:
Category : Medicine
Languages : en
Pages :
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Book Description
Mucosal Immunity and Evasion Strategies of Neisseria gonorrhoeae.
Author: Richard Bryant Roberts
Publisher: John Wiley & Sons
ISBN:
Category : Medical
Languages : en
Pages : 456
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Book Description
Author: Crispian Scully
Publisher: Academic Press
ISBN: 0128136820
Category : Medical
Languages : en
Pages : 124
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Book Description
Saliva Protection and Transmissible Diseases provides a review of saliva protection, raising debate on micro-organisms potentially transmissible in saliva, and also considering the evidence on diseases that may be transmitted by kissing. Saliva is a complex body fluid essential to health, especially mastication, swallowing and speech, and hyposalivation can lead to dysfunction and even infection. More serious pathogens, such as herpes viruses and papillomaviruses can be conveyed by kissing, as can potentially lethal micro-organisms present in some saliva, such as meningococci, fungal organisms and Ebola viruses. Stipulates the defensive roles of saliva, an important topic not previously reviewed in-depth in literature Provides awareness that saliva also transmits infectious agents that can produce serious or even lethal diseases Gives understanding that kissing may be an at-risk practice
