Academic Office:
LSUHSC School of Medicine
1901 Perdido Street, Suite 3205 MEB
New Orleans, LA 70112
Clinical Office:
University Medical Center, ID Clinic
2000 Canal St,
New Orleans, LA 70112
504-702-4130, phone
504-702-5597, fax
Bio
Dr. Welsh's research group studies the impact of the gut microbiota on health outcomes including host defense against infection, biological aging, and cardiometabolic syndrome. A particular focus is on alcohol induced dysbiosis in the intestinal tract and it's impact on immune function..
Education
Undergraduate:
B.A.
Brandeis University
Waltham, Massachusetts
Medical:
M.D.
University of Washington School of Medicine
Seattle, Washington
Residency:
Internal Medicine
Vanderbilt University Medical Center
Nashville, Tennesse
Fellowship:
Pulmonary and Critical Care
Louisiana State University School of Medicine
New Orleans, Louisiana
Affiliated Hospitals & Clinics
- University Medical Center
- East Jefferson General Hospital
- West Jefferson Medical Center
Publications
1. Zifodya JS, Ferguson TF, Siggins RW, Brashear MM, Kantrow SP, Nelson S, Shellito JE,
Molina PE, Welsh DA. Cross sectional analysis of the effect of alcohol on pulmonary function in a cohort
of men and women living with HIV. Alcohol. 2022 Mar 16;101:45-51. doi: 10.1016/j.alcohol.2022.03.001. [Epub ahead of print] PubMed PMID: 35306109; NIHMSID:NIHMS1790138..
2. Rosen EM, Primeaux SD, Simon L, Welsh DA, Molina PE, Ferguson TF. Associations of Binge Drinking and Heavy Alcohol Use on Sugar and Fat Intake in a
Cohort of Southern People Living with HIV. Alcohol Alcohol. 2022 Mar 12;57(2):226-233. doi: 10.1093/alcalc/agab066. PubMed PMID: 34611697; PubMed Central PMCID: PMC8919410..
3. Gu M, Samuelson DR, de la Rua NM, Charles TP, Taylor CM, Luo M, Siggins RW, Shellito
JE, Welsh DA. Host innate and adaptive immunity shapes the gut microbiota biogeography. Microbiol Immunol. 2022 Jan 24;. doi: 10.1111/1348-0421.12963. [Epub ahead of print] PubMed PMID: 35067963; NIHMSID:NIHMS1773928..
4. Obanda DN, Keenan MJ, Page R, Raggio AM, Taylor CM, Marx BD, Stout RW, Guice J, Luo
M, Welsh DA, Coulon D, Husseneder C. Gut Microbiota Composition and Predicted Microbial Metabolic Pathways of Obesity Prone
and Obesity Resistant Outbred Sprague-Dawley CD Rats May Account for Differences in
Their Phenotype. Front Nutr. 2021;8:746515. doi: 10.3389/fnut.2021.746515. eCollection 2021. PubMed PMID: 34950687; PubMed Central PMCID: PMC8691123..
5. Samuelson DR, Gu M, Shellito JE, Molina PE, Taylor CM, Luo M, Welsh DA. Pulmonary immune cell trafficking promotes host defense against alcohol-associated
Klebsiella pneumonia. Commun Biol. 2021 Aug 23;4(1):997. doi: 10.1038/s42003-021-02524-0. PubMed PMID: 34426641; PubMed Central PMCID: PMC8382828.
6. Kim S, Fuselier J, Welsh DA, Cherry KE, Myers L, Jazwinski SM. Feature Selection Algorithms Enhance the Accuracy of Frailty Indexes as Measures of
Biological Age. J Gerontol A Biol Sci Med Sci. 2021 Jul 13;76(8):1347-1355. doi: 10.1093/gerona/glab018. PubMed PMID: 33471059; PubMed Central PMCID: PMC8277082.
7. Hahn JA, Murnane PM, Vittinghoff E, Muyindike WR, Emenyonu NI, Fatch R, Chamie G,
Haberer JE, Francis JM, Kapiga S, Jacobson K, Myers B, Couture MC, DiClemente RJ,
Brown JL, So-Armah K, Sulkowski M, Marcus GM, Woolf-King S, Cook RL, Richards VL,
Molina P, Ferguson T, Welsh D, Piano MR, Phillips SA, Stewart S, Afshar M, Page K, McGinnis K, Fiellin DA, Justice
AC, Bryant K, Saitz R. Factors associated with phosphatidylethanol (PEth) sensitivity for detecting unhealthy
alcohol use: An individual patient data meta-analysis. Alcohol Clin Exp Res. 2021 Jun;45(6):1166-1187. doi: 10.1111/acer.14611. Epub 2021 May 7. PubMed PMID: 33837975; PubMed Central PMCID: PMC8254773.
8. Gu M, Samuelson DR, Taylor CM, Molina PE, Luo M, Siggins RW, Shellito JE, Welsh DA. Alcohol-associated intestinal dysbiosis alters mucosal-associated invariant T-cell
phenotype and function. Alcohol Clin Exp Res. 2021 May;45(5):934-947. doi: 10.1111/acer.14589. Epub 2021 Apr 3. PubMed PMID: 33704802; PubMed Central PMCID: PMC8283808.
9. McTernan PM, Katz PS, Porretta C, Welsh DA, Siggins RW. A Novel FACS-Based Workflow for Simultaneous Assessment of RedOx Status, Cellular
Phenotype, and Mitochondrial Genome Stability. BioChem. 2021 April; 1(1):1-18.
10. Maffei VJ, Siggins RW, Luo M, Brashear MM, Mercante DE, Taylor CM, Molina P, Welsh DA. Alcohol Use Is Associated With Intestinal Dysbiosis and Dysfunctional CD8+ T-Cell
Phenotypes in Persons With Human Immunodeficiency Virus. J Infect Dis. 2021 Mar 29;223(6):1029-1039. doi: 10.1093/infdis/jiaa461. PubMed PMID: 32725203; PubMed Central PMCID: PMC8006423.