44, 251 The dentin is hypersensitive most likely due to the lack of protection by cementum, loss of smear layer, and the hydrodynamic movement of fluid in dentinal tubules. Hypersensitivity and Allergy Hypersensitivity - An exaggerated immune response that may cause damage to the host. Read and download presentations by ali7070. Hypersensitivity PPT 1. Types of hypersensitivity diseases The type of immune response and immunologic mechanisms that causes tissue injury The nature and location of the antigen that is the ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 7288bc-ODJiZ Modified from ... Microsoft PowerPoint - Hypersensitivities '09.ppt Author: Hypersensitity, And Types of Hypersensitivity I, II, III, IV, Structure of eye and instillation of opthalmic sol. 3) DIABETES ppt. in which the lesions are more papular Type IV hypersensitivity can be classified into three categories depending on the time of onset and clinical and histological presentation Fig 5 Mechanism: The mechanism includes T lymphocytes and monocytes and/or macrophages. Hypersensitivity 4. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Download Share World's Best PowerPoint Templates - CrystalGraphics offers more PowerPoint templates than anyone else in the world, with over 4 million to choose from. Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. Symptoms may persist or recur for several weeks after stopping drug treatment. Learn and reinforce your understanding of Type II hypersensitivity through video. If you continue browsing the site, you agree to the use of cookies on this website. Hypersensitivity is a natural defense for plants in response to a variety of pathogens such as viruses, bacteria, fungi, and nematodes and is characterized by rapid cell death accompanied by an accumulation of toxic compounds within the dead cell. Foreign bodies in the Ear ppt. Each of these phases takes several hours and so the fully developed response appears only 24–48 hours after challenge. Get the plugin now. If you continue browsing the site, you agree to the use of cookies on this website. The ability to keep the organism free from foreign agents depends on the mechanisms of natural resistance or innate immunity, as well as the resistance that can develop over time through adaptive immunity. 2 2. FPASMAP Department of Microbiology Our Lady of Fatima University Slideshare uses cookies to improve functionality and performance, and to provide you with relevant advertising. HYPERSENSITIVITY 2. Dentin hypersensitivity may be related to excessive abrasion during tooth brushing, periodontal disease, or erosion from dietary or gastric acids 2,3,44 and may be increased following scaling and root planning. DIABETES MELLITUS - POWERPOINT PRESENTATIONS - FREE DOWNLOAD 1) DIABETES basics ppt. Times New Roman Arial Black Wingdings Times Helvetica Symbol slides 2000 Microsoft Word Document Hypersensitivity PowerPoint Presentation TYPE I Hypersensitivity Classic allergy Allergens Allergens Characteristics of allergens Allergens PowerPoint Presentation Atopy Genetic Predisposition Type I hypersensitivity Mechanisms of allergic response Sensitization Mechanisms of allergic … Actions. In the case of allergic contact dermatitis, the keratinocyte may also participate by producing a number of cytokines that activate Langerhans cells, mast cells, and other inflammatory cells. 2) DIABETES MELLITUS ppt. Immune complex hypersensitivity, Cell mediated. • It is defined as a state of exagerrated immune response to an antigen. It implies previous exposure and sensitization to the triggering substance or a cross reactive allergen. detailed and complete information about hypersensitivity and its types, presentation on hypersenstivity. PPT – Hypersensitivity PowerPoint presentation | free to download - id: 125fb3-MWIxZ. Hypersensitivity can also arise from direct interaction of the inciting agent with elements of the innate immune system without intervention by acquired responses. Now customize the name of a clipboard to store your clips. Allergic contact hypersensitivity also depends on processing and presentation of the antigen by dendritic Langerhans cells to CD4 + lymphocytes in regional lymph nodes. Another form of delayed hypersensitivity is contact dermatitis (poison ivy (figure 6), chemicals, heavy metals, etc.) Find PowerPoint Presentations and Slides using the power of XPowerPoint.com, find free presentations research about Type 3 Hypersensitivity PPT The Adobe Flash plugin is needed to view this content. [*] Share your PPT: If you are a doctor and want to share your Presentation (PPT) on mbbsppt.com then use this form to upload it. Foreign bodies in the Throat ppt. Clipping is a handy way to collect important slides you want to go back to later. Often presents as “hay fever”, asthma, dermatitis or anaphylaxis. Hypersensitivity - immune & inflammatory responses that are harmful to the host (von Pirquet, 1906)-Type I Produce effector molecules Capable of ingesting foreign Particles Association with parasite infection. Early IL-4 response promotes Th2 development that drives B cell class switching to IgE ... on hand of patient with poison ivy contact dermatitis (a type IV reaction) ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 36ff8-OTlkO See our Privacy Policy and User Agreement for details. Hypersensitive response (HR) is a form of programmed cell death (PCD) at the site of pathogen infection, which is thought to quarantine biotrophic pathogens (Fig. The first phase involves uptake, processing, and presentation of the antigen by local antigen- presenting cells. Anaphylaxis is triggered by the binding of an allergen to a specific immunoglobulin E (IgE). We use your LinkedIn profile and activity data to personalize ads and to show you more relevant ads. DRESS (drug rash with eosinophilia and systemic symptoms): This condition, also called drug-induced hypersensitivity syndrome (DHS), is a type IV hypersensitivity reaction that can start up to 12 weeks after initiation of drug treatment and can occur after a dose increase. Principles of ImmunologyHypersensitivity and Allergy4/11/06 ”Education is a progressive discovery … See our User Agreement and Privacy Policy. Hypersensitivity III and IV Presenters: Pervez Ali Mangnejo 3. You can change your ad preferences anytime. [*] Credits: The above Hypersensitivity Reactions PPT (presentation) is created by mbbsppt.com. Winner of the Standing Ovation Award for “Best PowerPoint Templates” from Presentations Magazine. Once you have submitted the presentation, please allow us to publish the presentation in 1-2 days. The immune response is known as a physiological mechanism to protect the body, providing defense to different systems that compose it and allowing its proper functioning. The Return of the King: Book Three in the Lord of the Rings Trilogy, The Baller: A Down and Dirty Football Novel, Shoe Dog: A Memoir by the Creator of Nike, Battlefield of the Mind: Winning the Battle in Your Mind, A Quick and Simple Summary and Analysis of The Miracle Morning by Hal Elrod, When They Call You a Terrorist: A Black Lives Matter Memoir, The Alter Ego Effect: The Power of Secret Identities to Transform Your Life, Trillion Dollar Coach: The Leadership Playbook of Silicon Valley's Bill Campbell, 94% found this document useful (16 votes), 94% found this document useful, Mark this document as useful, 6% found this document not useful, Mark this document as not useful. Hypersensitivity Reactions FE A. BARTOLOME, MD. ; The term is often used as a synonym for allergy, which describes a state of altered reactivity to an antigen. 8.2). in eye ppt, Anatomy and histology types of microscopes ppt, No public clipboards found for this slide. Hypersensitivity is increased reactivity or increased sensitivity by the animal body to an antigen to which it has been previously exposed. Anatomy of blood vessels ppt 6 years ago 5,287 views Structure of eye and instilla... 6 years ago 2,561 views Presentation eye 6 years ago 751 views Anatomy of Urinary System ppt 6 years ago 446 views View and Download PowerPoint Presentations on Type 3 Hypersensitivity PPT. This subclass is characterized by the reaction between IgE bound to mast cells and allergens, otherwise known as an allergy.This is mediated by a specific type of T lymphocytes called T H 2 that is essential in the production of IgE, eventually leading to inflammation. 3. Foreign bodies in the Nose ppt. collection of medical powerpoint presentations and lecture notes free download Anatomy Physiology Biochem Pathology Pharmacology Microbiology forensic Ophthalmology E N T Medicine Gynaecology Obstetrics surgery Paediatrics and many more subject's ready made power point presentations Type II hypersensitivity is due to antibody reactivity against cell membrane-associated antigens that results in cytolysis (Fig. Type II hypersensitivity reactions are mediated by antibodies The mechanism may involve complement ( cytotoxic antibody ) or effector lymphocytes that bind to target cell-associated antibody and effect cytolysis via a complement-independent pathway ( antibody-dependent cellular cytotoxicity, ADCC ). MEDIATOR = IgE PRIMARY CELLULAR COMPONENT = MAST CELL AND BASOPHILS AMPLIFIER = PLATELETS, NEUTROPHILS AND EIOSINOPHILS ffSTEP 1: EXPOSURE OF ANTIGEN TO ANTIGEN PRESENTING CELL ffSTEP 2: RECOGNITION BY T- HELPER CELLS Hypersensitivity • Hypersensitivity (also called hypersensitivity reaction or intolerance) refers to excessive, undesirable (damaging, discomfort-producing and sometimes fatal) reactions produced by the normal immune system. Figure:06 The stages of a delayed-type hypersensitivity reaction. Hypersensitivity Hypersensitivity (Immunological reaction) refers to undesirable immune reactions … They'll give your presentations a professional, memorable appearance - the kind of sophisticated look that today's audiences expect. Looks like you’ve clipped this slide to already. • Hypersensitivity reactions are harmful antigen-specific immune responses, occur when an individual who has been primed by an innocuous antigen subsequently encounters the same antigen, produce tissue injury and dysfuntion. (Roitt 2006 11 th edition) 3 1/1/2014 Prof. Muhammad Akram Hossain, Hypersensitivity-1 1. Hypersensitivity refers to undesirable reactions produced by the normal immune system, including allergies and autoimmunity These reactions may be damaging, uncomfortable, or occasionally fatal. An acute hypersensitivity reaction with multi-organ-system involvement that can present as, or rapidly progress to, a severe life-threatening reaction. The reaction may involve Hypersensitity, And Types of Hypersensitivity I, II, III, IV 1. Coombs & Gell Classification (1963) Type I hypersensitivity is also known as immediate or anaphylactic hypersensitivity. Allergic hypersensitivity. Remove this presentation Flag as Inappropriate I Don't Like This I like this Remember as a Favorite. Hypersensitivity and Autoimmunity * Type IV hypersensitivity the three forms Patch testing for contact hypersensitivity Summary or hypersensitivity reactions ... – A free PowerPoint PPT presentation (displayed as a Flash slide show) on PowerShow.com - id: 6d183b-MDVlM The trigger is often an innocuous antigen Allergy - A hypersensitive response to an environmental antigen. Cytotoxic hypersensitivity. Hypersensitivity Type I, II, III and IV in one table. Slide 7 - Type I – immediate hypersensitivity.