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F08 Micro Final
HIV - Hypersensitivity I
123
Other
Professional
08/29/2008

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Term
cells affected by HIV
Definition
- CD4+, monocytes, macrophages
Term
Opportunistic Diseases of AIDS patients
(AIDS defining illnesses)
Definition
- protazoal, fungal, viral, bacterial
Term
protazoal AIDS defining illnesses
Definition
- toxoplasmosis of the brain, cryptosporidiosis with diarrhea, isosporiasis with diarrhea
Term
fungal AIDS defining illnesses
Definition
- candidiasis of the esophagus, trachea and lungs
- pneumocystis pneumonia
- extrapulmonary cryptococcosis
- disseminated histoplasmosis
- disseminated coccidioidomycosis
Term
viral AIDS defining illnesses
Definition
- cytomegaloviris disease, herpes simplex, progressive multifocal leukoencephalopathy, hairy leukoplakia caused by epstein-barr virus
Term
bacterial AIDS defining illnesses
Definition
- mycobacterium avium-intracellulare complex, any atypical mycobacterial disease, extrapulmonary TB, salmonella septicemia, pyogenic bacterial infections
Term
opportunistic neoplasias (new growth)
Definition
- kaposi's sarcoma
- primary lymphoma of the brain
- other non-hodgkin's lymphomas
Term
saliva and oral fluids
Definition
Low p24 concentrations in ____.
Term
HIV transmission by saliva is stopped by...
Definition
- endogenous mucosal barriers
- neutralization by anti-HIV antibodies
- broad spectrum innate factors
- viral entrapment and aggregation
- inhibition of HIV entry into target cells
Term
broad-spectrum innate factors
Definition
- lysozyme, lactoferrin, defensins and lactoperoxidase
Term
SLPI (secretory leukocyte protease inhibitor)
Definition
- inhibits entry of HIV into target cell
Term
ELISA or EIA
Definition
- enzyme linked immunosorbent assay
- measures IgG and IgM
- partial agglutination
Term
antigen capture
Definition
- p24 antigen detection
Term
Western Blot
Definition
- confirms HIV infection based on IgG
Term
HIV screening tests
Definition
- ELISA, particle agglutination, antigen capture
Term
HIV confirmatory assays
Definition
- Western Blot and immunofluorescence
Term
antiretroviral therapy should be offered
Definition
- decreased CD4+ counts (<350)
- symptomatic disease
- regardless of HIV-1 RNA level
Term
HIV antivirals
Definition
- nucleoside and nucleotide analogue reverse transcriptase inhibitors
- non-nucleoside reverse transcritse inhibitors (NNRTI)
- protease inhibitors
- entry inhibitors
Term
nucleoside and nucleotide analogue reverse transcriptase inhibitors
Definition
- blocks DNA --> RNA
- zidovudine (AZT)
- binds to reverse transcriptase
Term
HAART or combination therapy
Definition
- 3 drugs
- typically 2 nucleoside analogue RT inhibitors with either a protease inhibitor or an NNRTI
Term
monitoring progression of HIV infection
Definition
- CD4+ t cell count
- HIV1 RNA/viral load
- p24 antigen
Term
CD4+ T cell count
Definition
- correlate with risk of developing opportunistic infections
- main way to monitor progression of HIV
Term
HIV1 RNA/viral load
Definition
- real time RT-PCR or branched chain DNA
- most sensitive indicator of viral replication
- every 3-4 months for patient on HAART
Term
Opportunistic infection, Protozoal, Fungal, Viral, Bacterial
Definition
An _________ _______ is a common indicator for HIV or AIDS, and has different types such as _________ (ie. Toxoplasmosis of the brain), _________ (ie. Candidiasis of the esophagus), _________ (ie. Leukoplakia caused by EBV) and _________ (ie. TB or recurrent mycobacterial disease).
Term
Mononucleosis
Definition
The Epstein Barr Virus (EBV) is the cause of ________.
Term
neoplasms, kaposi's Sarcoma, lymphoma of the brain, other non-hodgkin's lymphomas
Definition
Some AIDS defining illnesses are opportunistic __________ (meaning “new growth/tumors) and include Kaposi’s ________,which is the 1st indication of AIDS, primary _________ of the brain, and other non- _________ _________.
Term
Wasting, encephalopathy, pneumonia
Definition
Other AIDS defining illnesses include HIV _______ syndrome (found mostly in Africa), HIV ______________ and lymphoid interstitial ___________.
Term
False!
Definition
T/F? Saliva is a true risk factor for the contraction of HIV?
Term
blood
Definition
Saliva becomes a risk when it is mixed with ____.
Term
male to male sexual contact (50%)
Definition
Out of several groups at risk for AIDS, the groups at highest risk is ________.
Term
pH, HIV RNA and proviral DNA
Definition
Saliva has poor HIV transmission because of it low ___ from oral fluids; however, HIV ____ and proviral ____ have been detected in saliva.
Term
antibodies
Definition
Endogenous mucosal barriers are _______ in the oral cavity that can be neutralized by anti-HIV antibodies.
Term
Lysozyme, lactoferrin, defensins, and lactoperoxidase
Definition
A broad spectrum of innate factors regarding transmission by saliva are: (4)
Term
Mucins
Definition
Viral entrapment and aggregation can be achieved by _______.
Term
SLPI, secretory leuokocyte protease inhibitor
Definition
The inhibition of HIV entry into target cells is _______ which stands for____ _____ _____ _____. It was 1st assumed that this had an affect if the virus itself, but it has been proven that it affects the host, and it prevents HIV from entering the cell.
Term
males than femalse
Definition
AIDS is more common in ______ than _______.
Term
13-24 year olds
Definition
. The highest group diagnosed with HIV is ____ - ____ year olds.
Term
56,300
Definition
There have been _________ new HIV infections in the US in 06.
Term
stabilized since the late 1990s
Definition
The number of new infections has ________- since the late ______’s.
Term
healthcare
Definition
HIV screening is recommended for patients in all _________ _______ after consent is given but the patient the right to refuse.
Term
once
Definition
Persons at high risk for HIV infections should be screened at least _____ a year.
Term
General consent
Definition
_______ ______ for medical care is sufficient to include consent for HIV testing.
Term
Sensitive screening tests, highly specific confirmatory assay, based on antibodies to HIV, 6weeks to 2 months
Definition
To diagnose HIV properly, they must use __________ screening tests, highly _________ __________ assay, and it must be based on _________ to HIV at least ___ weeks to ___ months to allow antibodies to develop.
Term
3 weeks, sensitive
Definition
Current HIV tests usually take approximately ____ weeks because they are more ________.
Term
p24, RNA
Definition
_____ antigen can be detected early and HIV______ even earlier.
Term
ELISA aka EIA
Definition
The HIV screening test most commonly used is _______ or ___ which are enzyme-linked immunosorbent assay.
Term
IgG and IgM
Definition
The ELISA screening test and the particle agglutination test measures ____ and ____ to detect HIV.
Term
IgG, Western Blot, immunofluorescence
Definition
HIV confirmatory assays confirm HIV infection using ____, the _________ ______ which is a type of electrophoresis which is very specific, and _______________.
Term
antiviral
Definition
_________ therapy does not KILL anything, and it must be individualized
Term
risks and benefits, detectable, adverse, resistance
Definition
With Antiviral therapy, the patient must consider the ______ and ________ of therapy and that therapy can be beneficial to anyone with any __________ plasma HIV-1 RNA because they have ________ effects (like becoming resistant to it) and the viral ________.
Term
CD4 and T cells below 350 cells and symptomatic disease is present regardless of HIV-1 or RNA levels
Definition
AntiRETROviral therapy is only beneficial when _____ and ______ cell counts are decreased below _____ cells, when a ________ disease is present and regardless of _____-1 or _____ level.
Term
cannot cure or expel virus, but can lower cell count to undetectable level
Definition
Antiviral therapies cannot ______ you, they cannot _______ the virus from your body, but they can lower your ________ count to an undetectable level (although the virus is still able to spread).
Term
Nucleoside, nucleotide, transcriptase, Non-nucleoside, transcriptase, Protease, Entry
Definition
There are 4 types of antiviral therapies available: (1) ___________ and _________ analogue reverse ____________ inhibitors (which include Zidovudone AKA AZT, which was the 1st used), (2) ___________ reverse ___________ inhibitors, (3) __________ inhibitors (which interfere with protein that is part of the virus) and (4) _______ inhibitors AKA “fusion inhibitor” (prevents gp41 from allowing the entry of the virus into the cell).
Term
HAART, combination
Definition
The _________ AKA _____________ therapy targets 2 areas of multiplication using 3 drugs, typically 2 nucleoside analogue RT inhibitors with either a protease inhibitor of an NNRTI.
Term
Improves, declining, eliminate, control, prolongs, protease, resistance
Definition
HAART therapy greatly ________ the prognosis for HIV + people, it is a major factor in ________ death rates from HIV/AIDS infection, it does not ________ HIV but it does provide long term ______ of viral replication and _________ disease free survival, multiple reverse transcriptase and ________ inhibitors’ are effective in this therapy and it reduces the potential from development of __________.
Term
CD4, T-cell, branched, sensitive, replication, 3-4, p24, Africa
Definition
In order to properly monitor HIV, a person should consider having 3 things done: (1) they should have _____ and _______ counts done, because these correlate with the risk of developing an opportunistic infection, (2)should use HIV-1 RNA/ viral load which is real time ___________ chain DNA analysis because it is the most ________ indicators of viral __________, and it should be performed every __-__ months in patients on HAART, (3) and they should be tested for ______ Antigen, which has a much lower cost (mostly used in _______).
Term
Routine, notification, required, 3rd
Definition
In HIV testing for pregnant women, the screening test should be included in the _________ panel of prenatal screening tests, it does require __________ and the woman is not ________ to have this test performed, and it is also recommended that they repeat screening in their _____ trimester if they are subject to high risk factors.
Term
25, antiviral therapy
Definition
____ % of pregnant women will transmit HIV to their child if no ________ _________ is done.
Term
Pregnancy, c-section, transmission
Definition
Antiretroviral treatment is administered during _________ and having a __________ reduces the rate of _________ by 2% or less.
Term
labor and delivery
Definition
If treatment is given during ______ and _______, it can reduce to less than 10%.
Term
1981, gay men
Definition
The first case of HIV in the US was in _______ in _____ _______ from big cities.
Term
West Africa, 1930, SIV
Definition
Data suggests that the 1st case of HIV infection occurred in ______ _______ in the year _______, and was believed to come from the _____ virus which was found in non-human primates.
Term
underreactivity, overreactivity
Definition
____________ can indicate immunodeficiency disease or cancer whereas _________ can indicate hypersensitivity reactions.
Term
Allergies, Blood type incompatibilities, autoimmune diseases and Graft rejection
Definition
4 common overreactivity or hypersensitivity reactions include:
Term
Immediate, seconds, 30, IgE, mast, eosinophils, peanuts, latex, pollen, penicillin, urticaria, asthma, angioedema, anaphylaxis
Definition
Type I hypersensitivity is ____________ hypersensitivity, the onset takes ________ to _______ minutes, it is created by ____, _____ cells, and ________, it is triggered by ________, ______, _______ and _______ and its symptoms include ________ (hives), _________, _________ (which is edema in the tissues) and _________(which can be fatal).
Term
Cell-bound antigen, seconds, hours, IgG, complement, phagocytosis, hemolysis, hemolytic
Definition
Type II hypersensitivity is ______-_______ _________, the onset is _______ to ______, it is created by ____, __________ and __________, and its symptoms include immune-mediated ________ and ________ disease of newborns.
Term
Immune complexes, 3-8, IgG, compliment, neutrophils, autoimmune, kidney, joints, skin, serum
Definition
Type III hypersensitivity is ________ _________, the onset is ___ - ___ hours, it is created by ___, ___________ and _________ (PMN’s), it is ________________ disease related, and its symptoms include depositions of immune complexes in the ________, ________ and _____ and Arthrus reactions such as ______ sickness.
Term
Delayed Hypersensitivity, 2-3, T-cells, macrophages, contact dermatitis
Definition
Type IV hypersensitivity is _________ _______________, the onset is ____- ____ days, it is created by ______ and __________ and causes _________ ________ (as immunological reaction, not irritation)
Term
III
Definition
Type ___ is immune complexes and include rheumatoid arthritis and serum sickness
Term
I
Definition
Type ___ involves B-cells and antibodies and is immediate and includes typical allergies among people, such as hay fever and anaphylaxis (which can lead to death)
Term
IV
Definition
Type ___ is cell-mediated, cytotoxic; it involves T-cells and includes contact dermatitis and graft rejection.
Term
II
Definition
Type ___ is cell bound and is antibody medicated including blood type incompatibility.
Term
allergy
Definition
An _________ is a condition of altered reactivity or exaggerated immune responsiveness to antigens manifested by inflammatory symptoms.
Term
Atophy
Definition
__________ is the clinical manifestation of type I hypersensitivity reactions, eczema, asthma, rhinitis, and food allergy.
Term
anaphylaxis
Definition
___________ is systematic type I hypersensitivity response that involves airway obstruction and circulatory collapse, and can be fatal.
Term
Inherited, genetic, E, mast, target, mediators, multiple, 10-30
Definition
There are some predispositions for Type I allergies: __________ generalized susceptibility, not individual allergies; ___________ basis such as enhanced Ig__ production, increased reactivity of ______ cells and increased susceptibility of _______ tissue to allergic ___________; they may manifest __________ allergies; ____ - ____ % of population is prone to atopic allergy.
Term
Respiratory / Inhalants, GI tract / Ingestants, Injectants, Skin/mucous membrane / contactants
Definition
Here are some common exposures: _____________ / _____________ such as pollen, dust & dander from cat and dogs; ___ ________ / _____________ such as peanuts, shellfish, eggs fruit; ___________ such as bee stings and drugs; ________ / ____________ _____________ or ______________ such as cosmetics, heavy metals, detergents, chemicals and latex.
Term
Sensitizations, sensitizing dose, multiple, immune, Provocation, provocative dose
Definition
There are 2 ways to develop Type I allergies: (1) ____________ AKA ____________ _____ which can be the first exposure but usually requires __________exposures, and it primes the __________ system for subsequent encounters and no signs or symptoms; (2) _____________ AKA ____________ ________ that does have signs and symptoms.
Term
mast cells and basophils
Definition
Chemical mediators are produced by ________ cells and ____________, which include histamine, serotonin, leukotriene, platelet-activating factor, prostaglandins, bradykinin. (be familiar with these but don’t memorize).
Term
histamine
Definition
__________ stimulates smooth muscle rapidly.
Term
bronchioles, motility, vascular, edema, dialation, anaphylaxis
Definition
The stimulation of smooth muscles by histamine (1) constricts ____________ and causes increased __________ in intestine which causes diarrhea and troubled breathing, (2) relaxes ____________ smooth muscle which dilates artioles and venules and causes wheal and flare (hives) prutitis, and headache, and (3) _______ and vascular _________ leading to __________ which include hypertension, tachycardia, circulatory failure and shock or death.
Term
serotonin, circulation
Definition
_________ increase vascular permeability (meaning fluid comes out of _________), capillary dilation, smooth muscle contraction, intestinal peristalsis and respiratory rate.
Term
Leukotriene, slow reacting substance
Definition
___________ is the contraction of smooth muscle gradually and was once AKA SRS meaning ________ ______ _______.
Term
platelet-activating factor
Definition
__________ - ________ ________ is very similar to histamine.
Term
prostaglandins
Definition
____________ are inflammatory mediators and increase sensitivity to pain.
Term
bradykinin
Definition
____________ lead to the contractions of bronchioles, increased capillary permeability and increased mucous secretion.
Term
Atopic, pollen or molds, airborne
Definition
_________ diseases AKA allergic rhinitis or hay fever is caused by seasonal allergies (like _______ or _____) and also by year round allergies (like __________ allergies).
Term
atopic diseases
Definition
Nasal congestion, sneezing, coughing, profuse mucous secretions, itchy red teary eyes and mild bronchoconstriction are some symptoms of _________ _________.
Term
Asthma, breathing, bronchoconstriction, suffocation, inflamed, allergens, psychological
Definition
One major atopic disease is _________ which includes impaired ______ due to severe ______________, can range from periodic episodes of difficulty breathing to fatal ___________, the respiratory tract is chronically __________, its extremely responsive to small amounts of _________ and symptoms have been linked to the ____________ state of the patient.
Term
atopic dermatitis
Definition
Another atopic disease, __________ __________ is an intensely itchy inflammatory condition of the skin which has characteristics such as reddened, vesicular secretions, weeping, encrusted skin lesions (eczemas) and is often seen in babies.
Term
food
Definition
Another atopic disease is a _______ allergy, which has GI symptoms such as vomiting, diarrhea, and abdominal cramps.
Term
Anaphylaxis, peanuts, milk, shellfish
Definition
Food allergies may lead to ___________ and the most common allergies are ________, fish, _____, eggs, ______ and soybeans.
Term
drug
Definition
Another atopic disease is ________ allergy which reactions range from mild atopic reactions to fatal anaphylaxis.
Term
Antibiotics, penicillin, sulfa, opiates, dyes
Definition
Common drug allergies include __________, especially __________, ________ drugs, aspirin, _______, and _____ used in radiology.
Term
Cutaneous, Systematic
Definition
There are 2 types of anaphylaxis: (1) ___________, which have wheal and flare inflammatory reactions (hives) and occur within less than 30 minutes and (2) __________ which is sudden respiratory and circulatory disruption which can quickly turn fatal. ---- The response for atophy is very similar but more intense----
Term
Tryptase, mast, basophils, eosinophils, Histamine, serologic, E
Definition
When testing for allergies, clinicians measure (1) elevated levels of _________, which is an enzyme released by _______ cells, (2) increased levels of ________ and _______ in blood, (3) ___________ release test to specific allergens and (4) most commonly __________ tests for Ig __.
Term
Injection, allergens, 20, wheals, rate
Definition
Serological skin tests are performed by ________ of small amount of pure _______ intradermally into skin; After ____ minutes, they observe for _______ and _____ reactions.
Term
Avoid, drugs, block, desensitization
Definition
3 ways to treat allergies are to _______ the allergen, take ______ to _______ actions or to undergo _____________ therapy.
Term
Antihistamines, Aspirin, Theophyline inhaler, epinephrine, Epinephrine inhaler
Definition
Drug treatment includes (1) ____________, which block the histamine receptors, (2)________ or NSAID’s which interfere with prostaglandins synthesis, (3) _____________ _______ which is a bronchodilator, (4) injectable ___________ which reverses the constriction of airways and slows release of chemical mediators, and FINALLY (5)__________ _______ which has the same effect as an epi-pen.
Term
Anti-inflammatory – corticosteroid, degranulation mast, leukotrienes
Definition
Some other drugs include(1) _____- _____________ or _____________ with reduce IgE production, (2) Drugs that block the __________ of _____ cells which reduce the levels of inflammatory mediators and (3) block synthesis of __________ which helps asthmatics and people with rhinitis.
Term
Desensitization
Definition
The final treatment for allergies is ___________ in which a clinician injects small amount of allergen, stimulate production of IgG to the allergen, IgG then acts as blocking antibodies to remove allergen from the system before IgE binds to IgE and it is estimated that 70% of patients benefit from desensitization.
Term
d. A/B only
Definition
6) Patients infected w/ HIV usually take drugs which:
a. interfere with HIV replication
b. prevent other associated or opportunistic infections
c. eliminate HIV from the body
d. Both A and B only
e. A, B, C
Term
CD4 receptors
Definition
The HIV antigen, gp120, binds to:
Term
both a/b
Definition
11) The 1st symptomatic evidence of HIV infection may be:
a. repeated opportunistic infections
b. a flu-like illness
c. either a and b
d. neither a nor b
Term
b. results in synthesis of specific IgE antibodies
Definition
12) The sensitizing dose for Type 1 allergic reactions:
a. stimulates the 1st clinical manifestations, such as hives
b. results in synthesis of specific IgE antibodies
c. both a and b
d. neither a nor b
Term
IgE
Definition
13) A child w/ a history of hives after exposure to latex experiences respiratory distress within minutes after an intraoral exam using latex gloves. This reaction is probably mediated by Ig__,
Term
IgE
Definition
16) The antibody synthesized during the sensitizing dose for Type 1 hypersensitivity is Ig__.
Term
none of the above
Definition
17) Delayed hypersensitivity is synonymous w/ _____:
a. type 1
b. anaphylaxis
c. urticaria
d. hives
e. none of the above
Term
urticaria
Definition
- synonym for hives
Term
basophils and mast cells
Definition
When IgE is bound to certain cells and comes in contact with its specific antigen, histamine is released. These cells are:
Term
T helper cells and macrophages
Definition
HIV infects ___ and ___.
Term
SLPI
Definition
A protein in saliva which prevents HIV entry into host cells and thus reduces the likelihood of infection from contact w/ HIV in saliva is ____.
Term
IV, chemical accelerators
Definition
Development of contact dermatitis within 18 hrs after donning latex gloves, is symptomatic of a type __ allergic reaction caused by water-soluble _______ ______.
Term
histamine
Definition
- primary pharmacologic mediator for Type 1 hypersensitivity
Term
type I
Definition
Wheal and urticaria is used to describe which reaction?
Term
provacative
Definition
The contact w/ allergen that results in symptoms is called the ____ dose.
Term
bronchoconstriction
Definition
Symptoms of asthma develop as the direct result of _____.
Term
type II
Definition
Hemolytic disease of the newborn is what type of hypersensitivity ?
Term
type III
Definition
Arthus reaction and serum sickness are characteristic of which type of hypersensitivity reaction
Term
GP120
Definition
The initial attachment of HIV to host cells is via :
Term
type IV
Definition
Which hypersensitivity reaction involves sensitized T-lymphocytes and macrophages?
Term
sensitizing
Definition
The contact with allergen that does NOT result in symptoms is called the ____ dose.
Term
IgE
Definition
Class of immunoglobulin responsible for anaphylaxis in humans is
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