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Inflammation cells
leukocytes respond neutrophils, monocytes, eosinophils, basophils.
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antibody-mediated immunity cells?
Humor=body fluid
B-lymphocytes, plasma cell, Memory cells
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cell-mediated immunity cells?
T-lymophocyte helper/inducer, cytotoxic NKC: natural killer cell.
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Manifestations of inflammation? and focused labs?
- Warmth, redness, swelling, pain, decrease in function.
- Labs focused: C-reactive protein,ESR, WBC differential-basophils.
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Antibody mediated immunity, AKA: Humoral immunity. Activation?
- Antibody-antigen interactions
- Antibodies produced by B-lymphocytes: memory cells, B cells recognize antigens circulating in the lymph or blood-they bind and a costimulator such as helper T-cell or interleukin will help to active the B cell and cause it to proliferate.
- B-cells proliferate: creating plasma cells that carry antibodies.
- Created from pluripotent cells from bone marrow=mature in spleen and present in lymph nodes, tonsils, peyers patches of intestine.
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5 types of antibodies? presence in the blood?
- Made from globular proteins-Immunoglobulin
- IgA: 10%-15% found in serum, saliva, bowel fluid, breast milk. Breast milk protects Baby GI tract from viral and bacterial infect.
- IgD: 1% present on memory B cell and induces antibody production
- IgE: <1% Related to immunity reactions to parasites or allergies
- IgG: 70%-75% main antibody in blood-only one that goes across placenta and protects baby up to 2 weeks after birth.
- IgM: 10% made of 5 antibodies-key role in initial immune system, found in blood.
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Natural active immunity? causes?
Experiences the disease-creating antibodies
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artificial active immunity? causes?
Vaccinations teach the body without experiencing the disease.
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Passive immunity? Causes?
- Mother to fetus: breast feeding, IgG/IgA
- Treatment for rabies or snack bite is similar
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Cell mediated immunity, activation?
- Antigen presenting cell to T-cell-CMI mainly involves T-cells that respond to any cell presenting MHC markers=including invaded cells by pathogens, tumor cells and "transplanted cell"
- Influences and regulates AMI
- Regulates inflammation by producing and releasing cytokines
- Controls T-cells and NKC
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NKC-Natural Killer Cells
- Cytotoxic lymphocyte of innate immune system. Controls several types of tumors and microbial growth by limiting their spread and tissue damage.
- Can recognize stressed cells without antibody markers.
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Suppressor T-cells: T8
Prevention?
- Prevents over-reactivity of immune system
- balances helper T-cell
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Deficiency of T8 suppressor cell, leads to?
- Hypersensitivity and allergic reactions.
- Can be mild
- or
- life threatening.
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Allergy testing, Blood tests used when skin testing is not an option.
- Allergens and controls placed on skin.
- corticosteroids & histamines must be stopped 4 weeks prior to testing.
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Desensitization therapy? what is it?
- Allergy shots: SC shots-small amounts of allergens-takes up to 5 years of treatment.
- Trains IgG to bind to allergen before IgE can bind and produce allergic response.
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Reasons for an under-reactive immune system?
- HIV
- Malnutrition
- Neutropenia
- Corticosteroids
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Malnutrition and underactive immune system?
Focused labs?
- Proteins for immunoglobulin production
- Albumin levels to adequately control osmotic pressure
- iron, folic acid, B12 for RBC
- Copper for neutrophil production
- Labs: Total Protein, Albumin, Prealbumin, CBC w/diff, cholesterol levels.
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Neutropenia? Labs?
- Low neutrophils-prone to infection
- Neutrophil+bands, Absolute count
- Symptoms of neutropenic infection: Fever, cultures may not show source. Absolute neutrophil count less than 1000.
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Neutropenic precautions? for patient/ nurse.
- hand washing
- mask
- no water or ice from machine
- low bacteria diet( no raw foods)
- Do not change pet litter box
- avoid crowds
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Corticosteroids and immune deficiency?
Labs focused?
- inhibit movement of neutrophils/monocytes
- keeps T-cells in bone marrow causing less circulating T-cells in blood.
- Interferes with IgG production reducing AMI.
- Labs:Glucose, sodium, potassium, WBC, Calcium.
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HIV and CD4 cell deficiency?
- HIV hijacks the CD4 lymphocytes which is responsible for organizing squads of WBCs.
- Turns helper T-cells into HIV factories.
- Over time: causes lymphocytopenia-and increases risk of opportunistic infections.
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Acute phase of HIV infection? Focused labs?
Kaposi's sarcoma is an opportunist infection.
- 50-90% acute infection within 4 weeks
- takes up to 3weeks-3 months to create antibodies.
- Labs: Lymphocyte counts, viral load, 4th gen HIV tests, P24antigen, CD4/T-cell count. Antibody tests-western blot, ELISA.
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HIV treatments?
- Antiretrovirals
- Protease inhibitors
- fusion inhibitors
- Non and nucleoside analog reverse transcriptase inhibitors.
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HIV treatment of opportunistic infections?
- Yeast: Diflucan (fluconazole)
- MAC, Tb: Rifadin (rifampin), INH, Biaxin, Zithromax
- Herpes: Zovirax (acyclovir)
- Crytosporidiosis, giardiasis : Flagyl (metronidazole)
- Pneumocystis carinii pneumonia: Bactrim/ Septra
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TCCells, subset of suppressor cells. What does it do?
- Destroy cells that contain a processed antigen
- Most effective against self-cells infected by parasites: such as viruses & protozoa.Cause infected cell to lyse & die
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hygiene hypothesis?
Body develops an overactive stimuli to allergic diseases because of lack of early exposure to infectious agents as a child. Allergies are more common in developed countries due to this.
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Rheumatoid arthritis? because of what?
caused by RF made by our IgG and IgM that attack healthy tissue. forms immune complexes-activates cytokines that cause inflammation and damage joints
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Early treatment for RA
- NSAIDS
- Exercise program
- Elevate affected body part
- Energy conservation
- Stress managment
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Disease modifying anti-rheumatic drugs slow progression? examples?
- Plaquenil (hydroxychloroquine) anti-malarial, anti-inflammatory properties
- Azulfidine (sulfasalazine) inhibits prostaglandin synthesis; used for those intolerant of NSAIDS
- Minocin (minocycline) tetracycline family-- Off label
- Methotrexate immunosuppressant
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Autoimmune disorders? Lab focused?
- CBC: for white blood cell suppression, anemia, increased platelets
- ESR & CRP: increased in inflammatory diseases (unspecified)
- Rheumatoid Factor: positive or increased in RA & other connective tissue disorders (CTD)
- ANA: antinuclear antibody measures titer of unusual antibodies that destroy the nuclei of cells & cause tissue death
- Complement C3 and C4: and complement total looks at the proteins that act as enzymes that aid in immune and inflammatory response
- Albumin: decreased in chronic inflammation/infection
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Adipose and Arthritis?
Excess weight increases inflammation.
Inflammatory chemicals from fat such as cytokines and adipokines-promote joint inflammation.
Other cytokines released from fat: Tumor necrosis factor alpha(TNF-alpha)-causes cancer.
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Lupus? autoimmune disorder: butterfly rash
Treatment?
- S/S:arthalgia, fatigue, malaise, wt loss, fever, joint involvement.
- prevent skin infections
- Prevent organ damage by preventing disease process-pharm.
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Hyperacute rejection? ABO incompatibility
- Antigen-antibody complexes activate clotting cascade.
- Can lead to acute rejection of organ transplant
- CMI causes Tc-Cells and NK cells to penetrate the organ, start an inflammatory response, cause lysis of organ cells
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Chronic rejection?
leads to chronic inflammation and scarring which leads to chronic ischemia. leading to organ rejections/ failure.
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Organ transplant info?
- immunosuppressive medications
- diet-low sodium
- S/S of infection-teaching
- S/S of rejection: fever, fatigue, SOB, tenderness, decreased urine output.
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MHC protein: Major Histocompatability complex
set of cell surface proteins that are essential for the cell mediated immunity in recognizing foreign molecules.
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Lab Value interpretation
CD4+ (NR: 332-1642)
Value: 125 cells/mm^3
HIV takes over CD4+ cells and turns them into "HIV factories". A low CD4+ value helps to confirm HIV infection
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Lab Value interpretation
Comp C3 (NR: 83-177)
Value: 250 mg/dL
Comp C4 (NR: 12-36)
Value: 78 mg/dL
- Complement system in immunology are proteins that move freely through your bloodstream and play a role in the development of inflammation.
- C3 & C4 are the most commonly checked and High values indicate autoimmune disorders
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Lab value interpretation.
what does a high eosinophil count indicate?
Eosinophils are present in allergic reactions.
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Lab value interpretation
Neutrophils (NR: 43-75)
Value: % 17
Bands (NR: 3)
Value: 7
Neutropenia, bands indicate immature neutrophils.
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yeast is found in Heb B vaccine
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ANA is used to assess autoimmune disorders
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