SlideShare a Scribd company logo
Innate immunity Prof M.I.N. Matee Department of Microbiology and Immunology School of Medicine
Immunity:  All mechanisms used by the body to protect itself against all things foreign Immunity: innate or acquired
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Functions of innate immunity ,[object Object],[object Object]
Host defense mechanisms    A. Outer barriers Skin and epithelial linings Skin:  keratin sweat (NaCl), sebum (unsat. fatty acids) dead skin cells are shed Mucous membranes: mucus and ciliated epithelium   stomach –  acid  ( pH 2-3)   mucus -  prevent attachment & entry M cells -  endocytose pathogens , aids presentation to B and T lymphocytes Tears & saliva -  flushing; lysozyme Saliva -  aggregation of bacteria Urinary tract -  urinary flow
[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object]
B. Phagocytosis cells in blood & lymph active without exposure enhanced by immune system    1. Bacterium binds to ‘arm’   2. Bacterium engulfed into  membrane vesicle; phagosome   3. Vesicle fuses with lysosome    4. Digestive enzymes destroy  bacterial cell; peroxide &  superoxide also formed   5. Wastes emptied out of cell
Phagocytosis (MQ & PMN) ,[object Object],[object Object]
Fixed Macrophages ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Circulating Cells ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Phagocytosis ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Macrophages (MQ) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Neutrophils (PMN) ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Killing Mechanisms ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Killing Mechanisms - cont. ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Activation of Vascular Endothelium ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Immediately released Synthesized in 2 hours
Leukocyte Adhesion
Inflammatory Response
Acute-phase reactants ,[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Secreted Pattern Recognition Molecules Acute Phase Proteins Activation of Complement Opsonization of microbial cells Primarily produced by the liver but can be produced by phagocytes
Examples of Acute Phase Reactants ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
DURING SOME INFECTIONS CERTAIN COMPONENTS OF INVADING MICROBES PHAGOCYTIC CELL INTERLEUKIN - 1 ACTS AS CHEMICAL MESSENGER WHICH TELLS HYPOTHALAMUS THAT INFECTION IS OCCURRING BODY TEMPERATURE RAISED PRODUCE WHICH
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Result of fever ,[object Object],[object Object],[object Object],[object Object]
INTERFERON ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Effects of interferons: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object]
Alternative pathway of complement activation ,[object Object],[object Object],[object Object]
Activation of C’ System - cont. b C4b + C2b C3b + Bb
Regulation of Adaptive Response Veterinary Immunology & Immunopathology 91: 1, 2003

More Related Content

What's hot

Antigen
AntigenAntigen
Antigen
MUKESH SINGH
 
B cell(Immunology)
B cell(Immunology)B cell(Immunology)
B cell(Immunology)
Caroline Karunya
 
B- lymphocytes
B- lymphocytesB- lymphocytes
B- lymphocytes
yashi jain
 
Introduction to immunology
Introduction to immunologyIntroduction to immunology
Introduction to immunology
promotemedical
 
Antigen
AntigenAntigen
Cells of immune system
Cells of immune systemCells of immune system
Cells of immune system
Saranraj P
 
Innate and adaptive immunity
Innate and adaptive immunityInnate and adaptive immunity
Innate and adaptive immunity
Ikenna Godwin
 
10 - Innate Immunity
10 - Innate Immunity10 - Innate Immunity
10 - Innate ImmunityRachel Belton
 
Antigens
AntigensAntigens
Antigens
devadevi666
 
Innate immunity
Innate immunityInnate immunity
Innate immunity
Riyaz Sheriff
 
Adaptive Immunity
Adaptive ImmunityAdaptive Immunity
Adaptive Immunity
Areej Abu Hanieh
 
Immune response
Immune responseImmune response
Immune response
raghunathp
 
Primary and Secondary Lymphoid Organs
Primary and Secondary Lymphoid OrgansPrimary and Secondary Lymphoid Organs
Primary and Secondary Lymphoid OrgansAngelica Nhoj Gemora
 
Humoral immune response
Humoral immune responseHumoral immune response
Humoral immune responsesufihannan
 
T-cell
T-cellT-cell
Autoimmunity
AutoimmunityAutoimmunity
Autoimmunity
PrashantSharma807
 
Complement system
Complement system  Complement system
Complement system
Santosh Kumar Yadav
 
Antibody: Structure and Function
Antibody: Structure and FunctionAntibody: Structure and Function
Antibody: Structure and Function
RAJENDRA SINGH
 

What's hot (20)

Antigen
AntigenAntigen
Antigen
 
B cell(Immunology)
B cell(Immunology)B cell(Immunology)
B cell(Immunology)
 
B- lymphocytes
B- lymphocytesB- lymphocytes
B- lymphocytes
 
Immune response
Immune responseImmune response
Immune response
 
Introduction to immunology
Introduction to immunologyIntroduction to immunology
Introduction to immunology
 
Antigen
AntigenAntigen
Antigen
 
Cells of immune system
Cells of immune systemCells of immune system
Cells of immune system
 
Innate and adaptive immunity
Innate and adaptive immunityInnate and adaptive immunity
Innate and adaptive immunity
 
10 - Innate Immunity
10 - Innate Immunity10 - Innate Immunity
10 - Innate Immunity
 
Antigens
AntigensAntigens
Antigens
 
Innate immunity
Innate immunityInnate immunity
Innate immunity
 
Adaptive Immunity
Adaptive ImmunityAdaptive Immunity
Adaptive Immunity
 
Immune response
Immune responseImmune response
Immune response
 
Primary and Secondary Lymphoid Organs
Primary and Secondary Lymphoid OrgansPrimary and Secondary Lymphoid Organs
Primary and Secondary Lymphoid Organs
 
Basic Immunology
Basic ImmunologyBasic Immunology
Basic Immunology
 
Humoral immune response
Humoral immune responseHumoral immune response
Humoral immune response
 
T-cell
T-cellT-cell
T-cell
 
Autoimmunity
AutoimmunityAutoimmunity
Autoimmunity
 
Complement system
Complement system  Complement system
Complement system
 
Antibody: Structure and Function
Antibody: Structure and FunctionAntibody: Structure and Function
Antibody: Structure and Function
 

Similar to Innate immunity lecture

Bohomolets Microbiology Lecture #9
Bohomolets Microbiology Lecture #9Bohomolets Microbiology Lecture #9
Bohomolets Microbiology Lecture #9
Dr. Rubz
 
The immune system
The immune systemThe immune system
The immune system
Amjad Afridi
 
innateimmunity11102018.docx
innateimmunity11102018.docxinnateimmunity11102018.docx
innateimmunity11102018.docx
Yash203
 
Drugs affecting gastrointestinal function: Drugs for Constipation & Diarrhoea...
Drugs affecting gastrointestinal function: Drugs for Constipation & Diarrhoea...Drugs affecting gastrointestinal function: Drugs for Constipation & Diarrhoea...
Drugs affecting gastrointestinal function: Drugs for Constipation & Diarrhoea...
jhabarola
 
Innate-Immunity.pdf
Innate-Immunity.pdfInnate-Immunity.pdf
Innate-Immunity.pdf
SonuSiddique2
 
Innate-Immunity.pdf
Innate-Immunity.pdfInnate-Immunity.pdf
Innate-Immunity.pdf
NACHIYAPPANM2
 
Pharm immuno3 &4 q innate immunity & complement
Pharm immuno3 &4 q innate immunity & complementPharm immuno3 &4 q innate immunity & complement
Pharm immuno3 &4 q innate immunity & complementmmoney1
 
Innate important lecture
Innate important lectureInnate important lecture
Innate important lectureBruno Mmassy
 
Inflammation & cellular response
Inflammation & cellular responseInflammation & cellular response
Inflammation & cellular response
Muhammadasif909
 
Understanding immunology for internists 1
Understanding immunology for internists   1Understanding immunology for internists   1
Understanding immunology for internists 1Ahmed Elshebiny
 
Lecture 8- Immunity.ppt
Lecture 8- Immunity.pptLecture 8- Immunity.ppt
Lecture 8- Immunity.ppt
OdurSolomon1
 
The Immune system
The Immune systemThe Immune system
1. Immunity.pptx
1. Immunity.pptx1. Immunity.pptx
1. Immunity.pptx
hayatalakoum1
 
Immunology lecture med t e ch
Immunology lecture med t e chImmunology lecture med t e ch
Immunology lecture med t e chNoel4leon
 
innate immunity.pptx
innate immunity.pptxinnate immunity.pptx
innate immunity.pptx
First DR : Maryam Last Gamal
 
Immunology ii non-specific immunity
Immunology ii non-specific immunityImmunology ii non-specific immunity
Immunology ii non-specific immunityMUBOSScz
 
Innate immunity
Innate immunityInnate immunity
Chapter 15 Revised
Chapter 15   RevisedChapter 15   Revised
Chapter 15 RevisedJennHayes00
 

Similar to Innate immunity lecture (20)

Bohomolets Microbiology Lecture #9
Bohomolets Microbiology Lecture #9Bohomolets Microbiology Lecture #9
Bohomolets Microbiology Lecture #9
 
The immune system
The immune systemThe immune system
The immune system
 
innateimmunity11102018.docx
innateimmunity11102018.docxinnateimmunity11102018.docx
innateimmunity11102018.docx
 
Chp.16
Chp.16Chp.16
Chp.16
 
Drugs affecting gastrointestinal function: Drugs for Constipation & Diarrhoea...
Drugs affecting gastrointestinal function: Drugs for Constipation & Diarrhoea...Drugs affecting gastrointestinal function: Drugs for Constipation & Diarrhoea...
Drugs affecting gastrointestinal function: Drugs for Constipation & Diarrhoea...
 
Innate-Immunity.pdf
Innate-Immunity.pdfInnate-Immunity.pdf
Innate-Immunity.pdf
 
Innate-Immunity.pdf
Innate-Immunity.pdfInnate-Immunity.pdf
Innate-Immunity.pdf
 
Pharm immuno3 &4 q innate immunity & complement
Pharm immuno3 &4 q innate immunity & complementPharm immuno3 &4 q innate immunity & complement
Pharm immuno3 &4 q innate immunity & complement
 
Innate important lecture
Innate important lectureInnate important lecture
Innate important lecture
 
Inflammation & cellular response
Inflammation & cellular responseInflammation & cellular response
Inflammation & cellular response
 
Understanding immunology for internists 1
Understanding immunology for internists   1Understanding immunology for internists   1
Understanding immunology for internists 1
 
Immune System
Immune SystemImmune System
Immune System
 
Lecture 8- Immunity.ppt
Lecture 8- Immunity.pptLecture 8- Immunity.ppt
Lecture 8- Immunity.ppt
 
The Immune system
The Immune systemThe Immune system
The Immune system
 
1. Immunity.pptx
1. Immunity.pptx1. Immunity.pptx
1. Immunity.pptx
 
Immunology lecture med t e ch
Immunology lecture med t e chImmunology lecture med t e ch
Immunology lecture med t e ch
 
innate immunity.pptx
innate immunity.pptxinnate immunity.pptx
innate immunity.pptx
 
Immunology ii non-specific immunity
Immunology ii non-specific immunityImmunology ii non-specific immunity
Immunology ii non-specific immunity
 
Innate immunity
Innate immunityInnate immunity
Innate immunity
 
Chapter 15 Revised
Chapter 15   RevisedChapter 15   Revised
Chapter 15 Revised
 

More from Bruno Mmassy

Family rhabdoviridae
Family rhabdoviridaeFamily rhabdoviridae
Family rhabdoviridaeBruno Mmassy
 
Processing the crime scene
Processing the crime sceneProcessing the crime scene
Processing the crime sceneBruno Mmassy
 
Molecular forensics 2
Molecular forensics 2Molecular forensics 2
Molecular forensics 2Bruno Mmassy
 
Medical aspects of human identification
Medical aspects of human identificationMedical aspects of human identification
Medical aspects of human identificationBruno Mmassy
 
Forensic chemistry introduction
Forensic chemistry introductionForensic chemistry introduction
Forensic chemistry introductionBruno Mmassy
 
Sero and phage typing bls 206
Sero and phage typing bls 206Sero and phage typing bls 206
Sero and phage typing bls 206Bruno Mmassy
 
Selected gram positives bls 206
Selected gram positives bls 206Selected gram positives bls 206
Selected gram positives bls 206Bruno Mmassy
 
Rickettsia & chlamydia bls 206
Rickettsia & chlamydia bls 206Rickettsia & chlamydia bls 206
Rickettsia & chlamydia bls 206Bruno Mmassy
 
Pathogenic anaerobe gram positive bls 206
Pathogenic anaerobe gram positive bls 206Pathogenic anaerobe gram positive bls 206
Pathogenic anaerobe gram positive bls 206Bruno Mmassy
 
Lecture 2 diagnostic molecular microbiology bls
Lecture 2 diagnostic molecular microbiology blsLecture 2 diagnostic molecular microbiology bls
Lecture 2 diagnostic molecular microbiology blsBruno Mmassy
 
Antimicrobial susceptibility test and assay bls 206
Antimicrobial susceptibility test and assay bls 206Antimicrobial susceptibility test and assay bls 206
Antimicrobial susceptibility test and assay bls 206Bruno Mmassy
 
Antimicrobial agents and mechanisms of action 2
Antimicrobial agents and mechanisms of action 2Antimicrobial agents and mechanisms of action 2
Antimicrobial agents and mechanisms of action 2Bruno Mmassy
 
Antibiotics lecture may 2010
Antibiotics lecture may 2010Antibiotics lecture may 2010
Antibiotics lecture may 2010Bruno Mmassy
 
Streptococci and enterococci bls 206
Streptococci and enterococci bls 206Streptococci and enterococci bls 206
Streptococci and enterococci bls 206Bruno Mmassy
 
Bls 107 general microbiology
Bls 107 general microbiologyBls 107 general microbiology
Bls 107 general microbiologyBruno Mmassy
 

More from Bruno Mmassy (20)

Family rhabdoviridae
Family rhabdoviridaeFamily rhabdoviridae
Family rhabdoviridae
 
Antiviral 1
Antiviral 1Antiviral 1
Antiviral 1
 
Processing the crime scene
Processing the crime sceneProcessing the crime scene
Processing the crime scene
 
Molecular forensics 2
Molecular forensics 2Molecular forensics 2
Molecular forensics 2
 
Medical aspects of human identification
Medical aspects of human identificationMedical aspects of human identification
Medical aspects of human identification
 
Forensic
ForensicForensic
Forensic
 
Forensic chemistry introduction
Forensic chemistry introductionForensic chemistry introduction
Forensic chemistry introduction
 
Dna forensic
Dna forensicDna forensic
Dna forensic
 
Sero and phage typing bls 206
Sero and phage typing bls 206Sero and phage typing bls 206
Sero and phage typing bls 206
 
Selected gram positives bls 206
Selected gram positives bls 206Selected gram positives bls 206
Selected gram positives bls 206
 
Rickettsia & chlamydia bls 206
Rickettsia & chlamydia bls 206Rickettsia & chlamydia bls 206
Rickettsia & chlamydia bls 206
 
Pathogenic anaerobe gram positive bls 206
Pathogenic anaerobe gram positive bls 206Pathogenic anaerobe gram positive bls 206
Pathogenic anaerobe gram positive bls 206
 
Lecture 2 diagnostic molecular microbiology bls
Lecture 2 diagnostic molecular microbiology blsLecture 2 diagnostic molecular microbiology bls
Lecture 2 diagnostic molecular microbiology bls
 
Antimicrobial susceptibility test and assay bls 206
Antimicrobial susceptibility test and assay bls 206Antimicrobial susceptibility test and assay bls 206
Antimicrobial susceptibility test and assay bls 206
 
Antimicrobial agents and mechanisms of action 2
Antimicrobial agents and mechanisms of action 2Antimicrobial agents and mechanisms of action 2
Antimicrobial agents and mechanisms of action 2
 
Antibiotics lecture may 2010
Antibiotics lecture may 2010Antibiotics lecture may 2010
Antibiotics lecture may 2010
 
Streptococci and enterococci bls 206
Streptococci and enterococci bls 206Streptococci and enterococci bls 206
Streptococci and enterococci bls 206
 
Bls 107 general microbiology
Bls 107 general microbiologyBls 107 general microbiology
Bls 107 general microbiology
 
Bacteriophage 1
Bacteriophage 1Bacteriophage 1
Bacteriophage 1
 
Bacterial toxins
Bacterial toxinsBacterial toxins
Bacterial toxins
 

Recently uploaded

Assuring Contact Center Experiences for Your Customers With ThousandEyes
Assuring Contact Center Experiences for Your Customers With ThousandEyesAssuring Contact Center Experiences for Your Customers With ThousandEyes
Assuring Contact Center Experiences for Your Customers With ThousandEyes
ThousandEyes
 
Neuro-symbolic is not enough, we need neuro-*semantic*
Neuro-symbolic is not enough, we need neuro-*semantic*Neuro-symbolic is not enough, we need neuro-*semantic*
Neuro-symbolic is not enough, we need neuro-*semantic*
Frank van Harmelen
 
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualitySoftware Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Inflectra
 
Key Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfKey Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdf
Cheryl Hung
 
Designing Great Products: The Power of Design and Leadership by Chief Designe...
Designing Great Products: The Power of Design and Leadership by Chief Designe...Designing Great Products: The Power of Design and Leadership by Chief Designe...
Designing Great Products: The Power of Design and Leadership by Chief Designe...
Product School
 
Mission to Decommission: Importance of Decommissioning Products to Increase E...
Mission to Decommission: Importance of Decommissioning Products to Increase E...Mission to Decommission: Importance of Decommissioning Products to Increase E...
Mission to Decommission: Importance of Decommissioning Products to Increase E...
Product School
 
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
Sri Ambati
 
Essentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with ParametersEssentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with Parameters
Safe Software
 
FIDO Alliance Osaka Seminar: Passkeys at Amazon.pdf
FIDO Alliance Osaka Seminar: Passkeys at Amazon.pdfFIDO Alliance Osaka Seminar: Passkeys at Amazon.pdf
FIDO Alliance Osaka Seminar: Passkeys at Amazon.pdf
FIDO Alliance
 
UiPath Test Automation using UiPath Test Suite series, part 4
UiPath Test Automation using UiPath Test Suite series, part 4UiPath Test Automation using UiPath Test Suite series, part 4
UiPath Test Automation using UiPath Test Suite series, part 4
DianaGray10
 
Connector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a buttonConnector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a button
DianaGray10
 
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
Product School
 
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdfSmart TV Buyer Insights Survey 2024 by 91mobiles.pdf
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf
91mobiles
 
When stars align: studies in data quality, knowledge graphs, and machine lear...
When stars align: studies in data quality, knowledge graphs, and machine lear...When stars align: studies in data quality, knowledge graphs, and machine lear...
When stars align: studies in data quality, knowledge graphs, and machine lear...
Elena Simperl
 
Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........
Alison B. Lowndes
 
From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...
From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...
From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...
Product School
 
GraphRAG is All You need? LLM & Knowledge Graph
GraphRAG is All You need? LLM & Knowledge GraphGraphRAG is All You need? LLM & Knowledge Graph
GraphRAG is All You need? LLM & Knowledge Graph
Guy Korland
 
FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdfFIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance
 
FIDO Alliance Osaka Seminar: FIDO Security Aspects.pdf
FIDO Alliance Osaka Seminar: FIDO Security Aspects.pdfFIDO Alliance Osaka Seminar: FIDO Security Aspects.pdf
FIDO Alliance Osaka Seminar: FIDO Security Aspects.pdf
FIDO Alliance
 
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...
Ramesh Iyer
 

Recently uploaded (20)

Assuring Contact Center Experiences for Your Customers With ThousandEyes
Assuring Contact Center Experiences for Your Customers With ThousandEyesAssuring Contact Center Experiences for Your Customers With ThousandEyes
Assuring Contact Center Experiences for Your Customers With ThousandEyes
 
Neuro-symbolic is not enough, we need neuro-*semantic*
Neuro-symbolic is not enough, we need neuro-*semantic*Neuro-symbolic is not enough, we need neuro-*semantic*
Neuro-symbolic is not enough, we need neuro-*semantic*
 
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered QualitySoftware Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
Software Delivery At the Speed of AI: Inflectra Invests In AI-Powered Quality
 
Key Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdfKey Trends Shaping the Future of Infrastructure.pdf
Key Trends Shaping the Future of Infrastructure.pdf
 
Designing Great Products: The Power of Design and Leadership by Chief Designe...
Designing Great Products: The Power of Design and Leadership by Chief Designe...Designing Great Products: The Power of Design and Leadership by Chief Designe...
Designing Great Products: The Power of Design and Leadership by Chief Designe...
 
Mission to Decommission: Importance of Decommissioning Products to Increase E...
Mission to Decommission: Importance of Decommissioning Products to Increase E...Mission to Decommission: Importance of Decommissioning Products to Increase E...
Mission to Decommission: Importance of Decommissioning Products to Increase E...
 
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
GenAISummit 2024 May 28 Sri Ambati Keynote: AGI Belongs to The Community in O...
 
Essentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with ParametersEssentials of Automations: Optimizing FME Workflows with Parameters
Essentials of Automations: Optimizing FME Workflows with Parameters
 
FIDO Alliance Osaka Seminar: Passkeys at Amazon.pdf
FIDO Alliance Osaka Seminar: Passkeys at Amazon.pdfFIDO Alliance Osaka Seminar: Passkeys at Amazon.pdf
FIDO Alliance Osaka Seminar: Passkeys at Amazon.pdf
 
UiPath Test Automation using UiPath Test Suite series, part 4
UiPath Test Automation using UiPath Test Suite series, part 4UiPath Test Automation using UiPath Test Suite series, part 4
UiPath Test Automation using UiPath Test Suite series, part 4
 
Connector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a buttonConnector Corner: Automate dynamic content and events by pushing a button
Connector Corner: Automate dynamic content and events by pushing a button
 
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
From Siloed Products to Connected Ecosystem: Building a Sustainable and Scala...
 
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdfSmart TV Buyer Insights Survey 2024 by 91mobiles.pdf
Smart TV Buyer Insights Survey 2024 by 91mobiles.pdf
 
When stars align: studies in data quality, knowledge graphs, and machine lear...
When stars align: studies in data quality, knowledge graphs, and machine lear...When stars align: studies in data quality, knowledge graphs, and machine lear...
When stars align: studies in data quality, knowledge graphs, and machine lear...
 
Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........Bits & Pixels using AI for Good.........
Bits & Pixels using AI for Good.........
 
From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...
From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...
From Daily Decisions to Bottom Line: Connecting Product Work to Revenue by VP...
 
GraphRAG is All You need? LLM & Knowledge Graph
GraphRAG is All You need? LLM & Knowledge GraphGraphRAG is All You need? LLM & Knowledge Graph
GraphRAG is All You need? LLM & Knowledge Graph
 
FIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdfFIDO Alliance Osaka Seminar: Overview.pdf
FIDO Alliance Osaka Seminar: Overview.pdf
 
FIDO Alliance Osaka Seminar: FIDO Security Aspects.pdf
FIDO Alliance Osaka Seminar: FIDO Security Aspects.pdfFIDO Alliance Osaka Seminar: FIDO Security Aspects.pdf
FIDO Alliance Osaka Seminar: FIDO Security Aspects.pdf
 
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...
Builder.ai Founder Sachin Dev Duggal's Strategic Approach to Create an Innova...
 

Innate immunity lecture

  • 1. Innate immunity Prof M.I.N. Matee Department of Microbiology and Immunology School of Medicine
  • 2. Immunity: All mechanisms used by the body to protect itself against all things foreign Immunity: innate or acquired
  • 3.
  • 4.
  • 5. Host defense mechanisms A. Outer barriers Skin and epithelial linings Skin: keratin sweat (NaCl), sebum (unsat. fatty acids) dead skin cells are shed Mucous membranes: mucus and ciliated epithelium stomach – acid ( pH 2-3) mucus - prevent attachment & entry M cells - endocytose pathogens , aids presentation to B and T lymphocytes Tears & saliva - flushing; lysozyme Saliva - aggregation of bacteria Urinary tract - urinary flow
  • 6.
  • 7.
  • 8. B. Phagocytosis cells in blood & lymph active without exposure enhanced by immune system 1. Bacterium binds to ‘arm’ 2. Bacterium engulfed into membrane vesicle; phagosome 3. Vesicle fuses with lysosome 4. Digestive enzymes destroy bacterial cell; peroxide & superoxide also formed 5. Wastes emptied out of cell
  • 9.
  • 10.
  • 11.
  • 12.
  • 13.
  • 14.
  • 15.
  • 16.
  • 17.
  • 18.
  • 21.
  • 22.
  • 23. Secreted Pattern Recognition Molecules Acute Phase Proteins Activation of Complement Opsonization of microbial cells Primarily produced by the liver but can be produced by phagocytes
  • 24.
  • 25.
  • 26. DURING SOME INFECTIONS CERTAIN COMPONENTS OF INVADING MICROBES PHAGOCYTIC CELL INTERLEUKIN - 1 ACTS AS CHEMICAL MESSENGER WHICH TELLS HYPOTHALAMUS THAT INFECTION IS OCCURRING BODY TEMPERATURE RAISED PRODUCE WHICH
  • 27.
  • 28.
  • 29.
  • 30.
  • 31.
  • 32.
  • 33. Activation of C’ System - cont. b C4b + C2b C3b + Bb
  • 34. Regulation of Adaptive Response Veterinary Immunology & Immunopathology 91: 1, 2003

Editor's Notes

  1. Phagocytosis requires 1. Binding to particle / microbe 2. Actin-filament formation under particle. 3. Membrane extension and fusion behind particle 4. Fusion with lysosome (endocytic pathway).
  2. Hallmarks of an Inflammatory Response Redness Heat Swelling Pain
  3. Acute-phase proteins are produced by liver cells in response to cytokines released by macrophages in the presence of bacteria. They include serum amyloid protein (SAP) (in mice but not humans), C-reactive protein (CRP), fibrinogen, and mannan- binding lectin (MBL). SAP and CRP are homologous in structure; both are pentraxins, forming five-membered discs, as shown for SAP (photograph on the right). CRP binds phosphorylcholine on certain bacterial and fungal surfaces but does not recognize it in the form in which it is found in host cell membranes. It both acts as an opsonin in its own right and activates the classical complement pathway by binding C1q to augment opsonization. MBL is a member of the collectin family, which includes C1q, which it resembles in its structure. We have already seen how MBL activates complement (see Section 2-7) and how it binds to pathogen surfaces (see Fig. 2.28). Like CRP, MBL can act as an opsonin in its own right, in addition to activating complement. SP-A and SP-D are surfactants A and D, both of which are collectins that coat bacterial surfaces, facilitating their phagocytosis. Photograph courtesy of J. Emsley. Photo from Nature 1994, 367:338-345. © 1994 Macmillan Magazines Limited.
  4. Fig. 2.8, part 1 of 2. Overview of the main components and effector actions of complement. The early events of all three pathways of complement activation involve a series of cleavage reactions that culminate in the formation of an enzymatic activity called a C3 convertase, which cleaves complement component C3 into C3b and C3a. The production of the C3 convertase is the point at which the three pathways converge and the main effector functions of complement are generated. C3b binds covalently to the bacterial cell membrane and opsonizes the bacteria, enabling phagocytes to internalize them. C3a is a peptide mediator of local inflammation. C5a and C5b are generated by cleavage of C5b by a C5 convertase formed by C3b bound to the C3 convertase (not shown in this simplified diagram). C5a is also a powerful peptide mediator of inflammation. C5b triggers the late events in which the terminal components of complement assemble into a membrane-attack complex that can damage the membrane of certain pathogens. C4a is generated by the cleavage of C4 during the early events of the classical pathway, and not by the action of C3 convertase, hence the *; it is also a peptide mediator of inflammation but its effects are relatively weak. Similarly, C4b, the large cleavage fragment of C4 (not shown), is a weak opsonin. Although the classical complement activation pathway was first discovered as an antibody-triggered pathway, it is now known that C1q can activate this pathway by binding directly to pathogen surfaces, as well as paralleling the MB-lectin activation pathway by binding to antibody that is itself bound to the pathogen surface. In the MB-lectin pathway, MASP stands for mannan-binding lectin-associated serine protease. MBL important in early childhood and essentially act in lieu of antibodies C4 cleavage exposes thioester bond that covalently bonds to nearest surface Alternate pathway does not depend on a pathogen binding protein (spontaneous cleavage of C3)
  5. Non adaptive recognition receptors called Pathogen Recognition Receptors (PRR). These recognize PAMPs or pathogen associated molecular patterns. This leads to activation of immune response. Receptors can exist on the surface of the cell or intracellular in endocytic compartments. Recognition is based on two principles 1. microbial non-self (PRR/PAMP) 2. Missing self Inhibitory receptors (NK cells) Factor H of Complement In this lecture we will focus on receptors that recognize the pathogen. NK cells will be discussed later and you have already discussed complement. However, we will touch on the receptors of the complement system that the innate immune system uses for recognition. Example: Recognition of a pathogen causes to signals to be released. co-stimulator signals cytokines