Black Women and HIV- What you should know.ppt
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1、Black Women and HIV: What you should know,David J. Malebranche Assistant Professor Emory University Division of General Medicine,Agenda,HIV 101 HIV Transmission Behavioral Risk for HIV Current HIV Treatment Guidelines Black Women and HIV “Down Low” Men and HIV Conclusion/Questions,HIV 101,Immune Sys
2、tem Review Bone Marrow: creates immune cells Thymus: produces mature T cells Spleen: blood filter for foreign material and stimulator of immune response Lymph nodes: filter for lymphatic fluid, which carries foreign material,HIV 101 (contd),Immune System Cells T cells CD4 coordinates immune response
3、 * CD8 kills viruses, tumors and parasites and suppresses immune response NK cells kills foreign invaders and infection B cells produces antibodies (proteins) to fight infection Polymorphonuclear leukocytes (PMNs) trap and digest foreign material and infections Antigen presenting cells (APC) Macroph
4、ages Dendritic cells,HIV and the Immune System,HIV decreases CD4 T-cell count Peripheral destruction Decreased production/maturation in thymus Two in HIV progression: CD4 count (normal count 600-1500) Viral load (amount of virus in bloodstream) Train analogy,HIV Transmission,Vaginal/Anal sex IV Drug
5、 Abuse Vertical Transmission (during birth) Breast feeding Oral Sex? Kissing? Biting? Saliva, Tears, Sweat?,Co-factors in Behavioral Risk,Mental Health Depression, Anxiety, etc. Sexually Transmitted Infections Herpes, Syphilis, Gonorrhea, Chlamydia Circumcision increased risk for men Media blaming t
6、he victim Poor risk assessment Denial risk behaviors, drug use, sexuality,Protecting Yourself from HIV,Mental Health youre not “crazy” Education - Know your risk! Abstinence Have your sexual partners tested Condoms Microbicides - 2007 Post-exposure prophylaxis (PEP) Sperm Washing before becoming pre
7、gnant,Condoms,Latex best protection Polyurethane for those with latex allergy Lambskin porous; not the best barrier Breakage rate 2% 90 - 98% effectiveness preventing: Pregnancy Gonorrhea/Chlamydia HIV Not as effective against Syphilis, HPV (warts) and HSV (herpes),Acute Retroviral Syndrome,Flu-like
8、 illness fever, muscle aches, sore throat, swollen lymph nodes 2-8 weeks after HIV exposure Rash distinguishes it from the flu HIV Antibody test often negative HIV viral load & glycoprotein testing 30 70% of those infected will have this syndrome,HIV Testing Methods,Elisa Test sensitive test (low fa
9、lse negative rate) blood test Western Blot specific test (low false positive rate) blood test Orasure Q-tip swab in mouth Rapid results Routine lab results,When to Start Antiretroviral Therapy?,HIV Medications,NUCLEOSIDE REVERSE TRANSCRIPTASE INHIBITORS (NRTIs) These drugs work by blocking Step 4, w
10、here the HIV genetic material is converted from RNA into DNA. Approved drugs in this class include: AZT (Zidovudine, Retrovir) ddI (Didanosine, Videx) * ddC (Zalcitabine, Hivid) d4T (Stavudine, Zerit) 3TC (Lamivudine, Epivir) * Abacavir (Ziagen) Tenofovir (Viread) * FTC (Emtriva, Emtricitabine) * Co
11、mbivir (AZT/3TC combination) Trizivir (AZT/3TC/Abacavir combination),Side Effects - NRTIs,Common Headaches Nausea Diarrhea Serious Pancreatitis inflammation of pancreas (All) Lactic Acidosis body burns fat(All) Hypersensitivity allergic reaction (Ziagen) Peripheral Neuropathy nerve burning (Zerit, V
12、idex) Anemia, Neutropenia low blood counts (AZT),HIV Meds (contd),NON-NUCLEOSIDE REVERSE TRANSCRIPTASE INHIBITORS, (NNRTIs)These drugs blocks the same step of the life cycle (step 4), but in a different way. Three NNRTIs have been approved: Nevirapine (NVP, Viramune) Delavirdine (DLV, Rescriptor) Ef
13、avirenz (EFV, Sustiva),Side Effects - NNRTIs,Common Elevated Liver Enzymes Rash Headache Nausea/Vomiting Serious Dreams, Hallucinations, Mood Swings (Sustiva) Severe rash with blistering (Viramune, Rescriptor),HIV Meds (contd),PROTEASE INHIBITORS (PIs)These drugs block Step 7, where the raw material
14、 for new HIV virus is cut into specific pieces. Six protease inhibitors have been approved: Saquinavir (SQV, Invirase and Fortovase) Indinavir (IDV, Crixivan) Ritonavir (RTV, Norvir) “boosted” regimens Nelfinavir (NFV, Viracept) Amprenavir (APV, Agenerase) Kaletra (ritonivir/lopinavir) Atazanavir (R
15、eyataz),Side Effects - PIs,Common Diarrhea Nausea Headaches Fatigue Rash Liver irritation,Serious Kidney Stones (Crixivan) Fat deposits/wasting Diabetes (high blood sugar) High Cholesterol Bone damage,HIV Meds (contd),FUSION INHIBITORS These drugs block Step 2, blocking HIVs ability to infect health
16、y CD4 cells by adhering to its outer membrane. One fusion inhibitor has been approved: Fuzeon (Enfuvirtide) administered as a twice daily subcutaneous injection,Side Effects Fusion Inhibitors,Injection site reactions Allergic reactions Pneumonia Leg and foot nerve pain Insomnia Depression Constipati
17、on Pancreas problems,Initiation of Antiretroviral Therapy,2 NRTIs and 1 NNRTI D4T/3TC and Sustiva Combivir and Kaletra 2 NRTIs and 1 PI or “boosted” PI Combivir and Viracept or Crixivan Combivir and KaletraWhats the best regimen to start with?,Vertical Transmission,HIV transmission from mother to ch
18、ild 25 30% HIV transmission risk to infant without treatment Treatment AZT reduces transmission from 27% to 10% compared to placebo Viramune reduces transmission from 21% to 12% compared with AZT,HIV and Black Women,Statistical disclaimer be critical thinkers Greatest risk factors 38% through hetero
19、sexual sex 25% through IVDU “Significant” number of black women contract HIV through sex with IVDU 64% of HIV infections among all U.S. women in 2001 Why are infections occurring?,The “Down Low”,What does Down Low mean?Who is more at risk for HIV “Down Low” men or “Gay” identified men?,The meaning o
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