george d. comerci, jr., md,facp, daapm professor of internal medicine co-director: project echo pain...
TRANSCRIPT
GEORGE D. COMERCI, JR., MD,FACP, DAAPM
PROFESSOR OF INTERNAL MEDICINECO-DIRECTOR: PROJECT ECHO PAIN
HEADACHE CLINIC,UNM PAIN CONSULTATION AND
TREATMENT CENTER
Update in Outpatient Internal Medicine for the
Outpatientalist: 2013
Financial Disclosures
What to expect….
Discussion of New Studies pertinent to the internist
Update on New Disease Prevention Recommendations
New Drugs, New uses for old drugs, News about drugs
Objectives
Describe the clinical features of the H7N9 flu Discuss the relationship of statins to diabetesDiscuss the emerging knowledge of the
relationship of the human microbiome to disease
Describe the possible relationship of exercise on dementia prevention
Discuss the importance of mammographic breast density as this relates to mammography frequency
Describe the indications for the PCV-13 vaccineDiscuss new information about drugs
Clinical Findings in 111 Cases of Influenza A H7N9 [N Engl J Med.2013.368:2277-85]
•Novel avian-origin influenza virus appeared in China•Data on 111 cases evaluated•H7N9 virus identified by RT-PCR assay•Clinical Findings Lab Findings
• Pneumonia: 97.3 % lymphopenia• ARDS: 71.2% Inc. CK and AST
• Shock: 26.1%• Death: 27%
Origin of the Novel Avian Influenza A H7N9 Virus.
Morens DM et al. N Engl J Med 2013;368:2345-2348.
3 factors a pandemic make….
A substantial portion of the population should not be immune
The virus should be capable of causing human disease
Efficient human-human transmission*
Human Microbial Biosphere (Microbiota)
• The microbiota represents the communities of microorganisms that resides within (and on) us
10 times more microbial cells than human cellsThe microbiome is the genetic content of the
microbial communities and is far more complex than the human genetic content
Our symbiotic relationship to our microbial biosphere is usually commensal or of mutual benefit, but occasionally the relationship is pathologicWe Are One with our Microbiota!
The Human Microbiome [Nutr Clin Pract.2012;27:201-214]
The Microbiome is studied via gene sequencing techniques not by culture techniquesThe Microbiome is most similar in twins, differing some degree within family members and further differing amongst unrelated family membersInfant gut microbiota resembles that of an adult by three years of ageThe microbiota is dramatically influenced by environment, foods, antibiotics, etc.
Microbiota of different body surfaces [Harrisons Principles of Internal Medicine.18th ed. 2012]
Pharacometabonomic identification of a significant host-microbiome metabolic interaction affecting
human drug metabolism [PNAS.106.2009]
Can a host’s metabolic phenotype (their microbiota) influence drug metabolism?Acetaminophen Acet Sulfate
Acet GlucuronideAcet N Acetylcysteine
P-cresol is produced by certain gut microbes and competes for sulfation with acetaminophenPatients who were high producers of p-cresol had reduced sulfation and reduced metabolism of acetaminophen
Obesity-induced gut microbial metabolite promotes liver cancer through senescence secretome.
[Nature.2013;499:99-103]
Senescent cells develop a secretory profile consisting of inflammatory cytokines, chemokines and proteases (senescence associated secretory profile-SASP) Some of these SASP promote cell clearance but others promote
tumorigensis
Dietary changes that promote obesity change the gut of mice microbiota in such a way that production of deoxycholic acid (DCA) was increased which in turn increased SASP phenotype in hepatic cells favored tumorigensis and increased HCC
This effect was reduced by administration of vancomycin which reduced DCA production
Energy-balance studies reveal associations between gut microbes, caloric load and nutrient absorption in
humans. [AmJClinNutr.2011;94:58-65.]
Indigestible carbohydrates and proteins account for 10-30% of total ingested energy
The ability to “harvest” this energy is highly dependent upon the gut microbiota
The microbiota of obese individuals is different than that of lean individuals.
This study showed that a high caloric diet (3400 kcal/d) increased Firmicutes sp. and decreased Bacteriodetes sp. resulting in a net increased caloric absorption of 150Kcal/d
Duodenal Infusion of Donor Feces for Recurrent Clostridium dificile. [N Engl J Med.2013;368:407-414.]
Question: Is duodenal infusion of donor feces effective for the treatment of recurrent Clostridium dificile infection.
Methods: 43 patient who had failed a course of vancomycin for C dif colitis 17 received vancomycin 500qid x 4 D and subsequent
colon lavage followed by infusion of donor feces 13 received vancomycin 500 qid x 14 D with bowel
lavage 13 received vancomycin 500 qid x 14 D
Rates of Cure without Relapse for Recurrent Clostridium difficile Infection.
van Nood E et al. N Engl J Med 2013;368:407-415
Microbiota Diversity in Patients before and after Infusion of Donor Feces, as Compared with Diversity in Healthy Donors.
van Nood E et al. N Engl J Med 2013;368:407-415
We (our genome) and the microbiome are One!
Variations in gut microbiome are affected by our immediate surroundings, our diet and drugs.
Variations in gut microbiome can affect drug metabolism
Variations in the gut microbiome may increase the risk of certain cancers
Re-establishment of a damaged gut microbiome can eliminate disease
Meta-Analysis of Impact of Different Types and Doses of Statins on
New-Onset Diabetes Mellitus [Am J Cardiol2013;111:1123e1130]
Question: What is the specific the specific risk fordeveloping DM associated with one statin
compared with another and is there a relationship to dosage and DMMethods: •Meta-analysis of RCTs between 1994-2012•Studies need have >1000 patients who were followed for > 1 yearEndpoints•New onset DM
Meta-Analysis of Impact of Different Types and Doses of Statins on
New-Onset Diabetes Mellitus [Am J Cardiol2013;111:1123e1130]
Results:•17 studies:
• 14 compared statin to placebo• 3 compared high dose vs. moderate dose statin
•11,3394 patients representedRosuvastatin 20 mg/day: 25% relative increase in the risk for developing new-onset DM.Pravastatin 40 mg/day: lowest risk for DM, almost comparable with placebo treatment.Simvastatin 40 mg/day: approx. = Rosuvastatin 20 mg/day.
1 case of diabetes for every 4 cardiovascular events prevented.
[Circ.2012.126;e282-284]
The Association Between Midlife Cardiorespiratory Fitness Levels and Later-Life Dementia: A Cohort
Study [Ann Intern Med. 2013;158(3):162-168]
Question: Is there an association between midlife fitness and all cause dementia?Methods:Study Center: Cooper Center Longitudinal StudyStudy Cohort: 19,458 persons who had an exercise treadmill test between 1999-2009Exclusion Criteria: MI, stroke, chronic illness leading to disability, age>65.Fitness Level: quintiles according to METs on ETT
The Association Between Midlife Cardiorespiratory Fitness Levels and Later-Life Dementia: A Cohort
Study [Ann Intern Med. 2013;158(3):162-168]
Methods (cont.) Quintile 1: 8.1 METS Quintile 2: 9.4 METS Quintile 3: 10.4 METS Quintile 4: 11.3 METS Quintile 5: 13.3 METSAssessment at ages 70, 75, 80 and 85 years
Dementia identified ICD-9 codes (primarily for Alzheimer-type dementia but also for vascular dementia)
The Association Between Midlife Cardiorespiratory Fitness Levels and Later-Life Dementia: A Cohort
Study [Ann Intern Med. 2013;158(3):162-168]
Results: •Mean follow-up: 24 years•Hazard ratio: Quintile 5 compared to Quintile 1= 0.64•No significant effect of educational level (mean =15 yr.)•No significant difference in those with or without a history of stroke
Date of download: 10/8/2013
Copyright © The American College of Physicians. All rights reserved.
From: The Association Between Midlife Cardiorespiratory Fitness Levels and Later-Life Dementia: A Cohort Study
Ann Intern Med. 2013;158(3):162-168. doi:10.7326/0003-4819-158-3-201302050-00005
Dementia-free survival, according to midlife fitness level.
Figure Legend:
Chronic Opioid Use is associated with increased DNA Methylation correlating with increased clinical
pain. [Pain.2013;154.15-23]
Does chronic opioid therapy have pharmacoepigenetic effects which result in decreased opioid responsiveness?
The pain response to opioids varies amongst patientsMost patients develop tolerance to opioidsSome develop hyperalgesia with opioids
Chronic Opioid Use is associated with increased DNA Methylation correlating with increased clinical
pain. [Pain.2013;154.15-23]
MethodsCohort 1: Addicts on methadoneCohort 2: Matched controlsCohort 3: Pain patients on 115.8 MEDsCohort 4: Pain patients on no opioids
Quantitative Analysis:OPRM 1 (Mu receptor gene)LINE 1 (transposone on mu receptor
gene)
The Transposon
DNA Methylation
Comparison of global methylation and pain scores
Prevention
PCV13 Pneumococcal Conjugate Vaccine
The “classic” vaccine (PPV23) is a 23 valent vaccineIn use since 1983No anamnestic response, ergo, immunity wanesPCV 13 is a conjugate made of a protein + a polysaccharide capsular antigenLarge scale clinical trial data not yet available
Date of download: 10/1/2013Copyright © 2012 American Medical
Association. All rights reserved.
From: Use of 13-Valent Pneumococcal Conjugate Vaccine and 23-Valent Pneumococcal Polysaccharide Vaccine for Adults With Immunocompromising Conditions: Recommendations of the Advisory Committee on Immunization Practices (ACIP)JAMA. 2013;309(4):334-336. doi:10.1001/jama.2012.31377
Figure Legend:
Breast Cancer Screening
JT is a 56 y/o female who presents for her yearly health exam. She has visited the Are You Dense website, wants to know her breast density “score” on her recent mammogram. She disagrees with your recommendation to have mammograms every 2 years and, furthermore, wants an MRI if her breasts are dense.Is breast density a risk for breast cancer?Does she need yearly mammograms if she has dense breasts?Should she have an MRI if her breasts are dense?
Breast Cancer Screening
Breast “density” correlates with the degree of fat replacement of breast tissue
Women with mammographically dense breast have a higher risk of invasive breast cancer
Are You Dense, a breast advocacy group, has pushed for laws mandating that women be informed of the degree of density of their breast on mammography and have more aggressive screening if their breasts are dense on mammography
[J Natl Cancer Inst;2013;105:1043–1049]
Outcomes of Screening Mammographyby Frequency, Breast Density, and PostmenopausalHormone Therapy [JAMA Intern Med. 2013;173(9):807-816.]
Purpose: To compare the benefits and harms of screening mammography frequencies according to age, breast density, and postmenopausal hormone therapy (HT) use.
Prospective study from data from the Breast Cancer Surveillance Consortium (BCSC) mammography registriesData collected January 1994 to December 2008
11,474 women with breast cancer and 922,624 without breast cancer
Outcomes of Screening Mammographyby Frequency, Breast Density, and PostmenopausalHormone Therapy [JAMA Intern Med. 2013;173(9):807-816.]
Women aged 40 to 49 years: biennial mammography vs. annual is associated
with increased risk of advanced-stage cancer (odds ratio [OR], 1.89 and large tumors (OR, 2.39).
Women age 50 to 74 years: biennial mammography was not associated with
increased risk of less favorable tumor characteristics regardless of breast density or HT usage.
Triennial mammography WAS associated with higher grade lesions only in women with extremely dense breasts
New Drugs, New uses of Old Drugs, News about Old
Drugs
Zolpidem
220% increase in ER visits due to toxicity (2005-2010)[JAMA.2013;309:2203]
Impaired driving, especially women and elderlyWomen: 5mg IR/ 6.25 mg XR Elderly: [JAMA.2013;309:646]
Increased risk of Hip Fracture in ElderlyOR = 1.66 for hip fracture in nursing home residents [JAMA Intern Med. 2013 May 13;173(9):754-61.]
[
Fake and Substandard Drugs
“falsified drug” misrepresents identify, source or both“substandard drug”: fails to meet accepted standards of manufacturing
production packaging distribution JAMA.2013.309.1693-1694
Fake and Substandard Drugs
Supplements Life style drugs
sildenafil Antimicrobials
TB medications Malaria medications HIV medication
Bull World Health Organ 2010;88: 247–248
Codeine
• A natural derivative of OpiumA weak analgesic nearly on the bottom of the WHO
pain ladderConverted to morphine by cytochrome P-450
enzyme 2 D6 (CYP2DR)CYP2DR activity exists as a spectrum of activity [slow metabolizers high
metabolizers]15% of Middle Eastern and Northern African
patients are high metabolizers Clin Pharm & Therap .2012; 91:323-326
N. Engl. J. Med.2009; 361, 827–828 (2009).
Fluoroquinolones
Severe neuropathy Usually during treatment Potentially irreversible
Severe fluctuations in glucose levels
http://1.usa.gov/17QhZK3
In summary….
The H7N9 influenzaThe increased risk of DM with rosuvastatin
and simvastatinThe complex role of the human microbiome in
disease and metabolismThe role of exercise in dementia preventionDNA methylation with chronic opioid usageBreast cancer screening and breast densityPCV-13 vaccineUpdates on Zolpidem, Codeine and Fake drugs
Thank You!