TitleAssistant Professor
InstitutionBaylor College of Medicine
DepartmentDepartment of Pathology & Immunology
Address1102 BATES
Houston, TX 77030
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    Publications listed below are automatically derived from MEDLINE/PubMed and other sources, which might result in incorrect or missing publications. Faculty can login to make corrections and additions.
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    PMC Citations indicate the number of times the publication was cited by articles in PubMed Central, and the Altmetric score represents citations in news articles and social media. (Note that publications are often cited in additional ways that are not shown here.) Fields are based on how the National Library of Medicine (NLM) classifies the publication's journal and might not represent the specific topic of the publication. Translation tags are based on the publication type and the MeSH terms NLM assigns to the publication. Some publications (especially newer ones and publications not in PubMed) might not yet be assigned Field or Translation tags.) Click a Field or Translation tag to filter the publications.
    1. Barbour A, Smith L, Oveisi M, Williams M, Huang RC, Marks C, Fine N, Sun C, Younesi F, Zargaran S, Orugunty R, Horvath TD, Haidacher SJ, Haag AM, Sabharwal A, Hinz B, Glogauer M. Discovery of phosphorylated lantibiotics with proimmune activity that regulate the oral microbiome. Proc Natl Acad Sci U S A. 2023 05 30; 120(22):e2219392120. PMID: 37216534; PMCID: PMC10235938.
      Citations: 2     Fields:    Translation:HumansCells
    2. Horvath TD, Haidacher SJ, Engevik MA, Luck B, Ruan W, Ihekweazu F, Bajaj M, Hoch KM, Oezguen N, Spinler JK, Versalovic J, Haag AM. Interrogation of the mammalian gut-brain axis using LC-MS/MS-based targeted metabolomics with in vitro bacterial and organoid cultures and in vivo gnotobiotic mouse models. Nat Protoc. 2023 02; 18(2):490-529. PMID: 36352124.
      Citations: 4     Fields:    Translation:AnimalsCells
    3. Oezguen N, Yilmaz V, Horvath TD, Akbayir E, Haidacher SJ, Hoch KM, Thapa S, Palacio J, T?rkoglu R, K?rt?nc? M, Engevik MA, Versalovic J, Haag AM, T?z?n E. Serum 3-phenyllactic acid level is reduced in benign multiple sclerosis and is associated with effector B cell ratios. Mult Scler Relat Disord. 2022 Dec; 68:104239. PMID: 36279598.
      Citations:    Fields:    
    4. Horvath TD, Poventud-Fuentes I, Olayinka L, James A, Haidacher SJ, Hoch KM, Stevens AM, Haag AM, Devaraj S. Validation of atovaquone plasma levels by liquid chromatography-tandem mass spectrometry for therapeutic drug monitoring in pediatric patients. J Mass Spectrom Adv Clin Lab. 2022 Nov; 26:23-27. PMID: 36388060; PMCID: PMC9641598.
      Citations: 1     
    5. Poon SSB, Hung LY, Wu Q, Parathan P, Yalcinkaya N, Haag A, Luna RA, Bornstein JC, Savidge TC, Foong JPP. Neonatal antibiotics have long term sex-dependent effects on the enteric nervous system. J Physiol. 2022 10; 600(19):4303-4323. PMID: 36082768; PMCID: PMC9826436.
    6. Blackman AC, Thapa S, Venkatachalam A, Horvath TD, Runge JK, Haidacher SJ, Hoch KM, Haag AM, Luna RA, Anagnostou A. Insights into Microbiome and Metabolic Signatures of Children Undergoing Peanut Oral Immunotherapy. Children (Basel). 2022 Aug 09; 9(8). PMID: 36010081; PMCID: PMC9406383.
    7. Horvath TD, Ihekweazu FD, Haidacher SJ, Ruan W, Engevik KA, Fultz R, Hoch KM, Luna RA, Oezguen N, Spinler JK, Haag AM, Versalovic J, Engevik MA. Bacteroides ovatus colonization influences the abundance of intestinal short chain fatty acids and neurotransmitters. iScience. 2022 May 20; 25(5):104158. PMID: 35494230; PMCID: PMC9038548.
    8. Xavier JB, Monk JM, Poudel S, Norsigian CJ, Sastry AV, Liao C, Bento J, Suchard MA, Arrieta-Ortiz ML, Peterson EJR, Baliga NS, Stoeger T, Ruffin F, Richardson RAK, Gao CA, Horvath TD, Haag AM, Wu Q, Savidge T, Yeaman MR. Mathematical models to study the biology of pathogens and the infectious diseases they cause. iScience. 2022 Apr 15; 25(4):104079. PMID: 35359802; PMCID: PMC8961237.
    9. Fultz R, Ticer T, Ihekweazu FD, Horvath TD, Haidacher SJ, Hoch KM, Bajaj M, Spinler JK, Haag AM, Buffington SA, Engevik MA. Unraveling the Metabolic Requirements of the Gut Commensal Bacteroides ovatus. Front Microbiol. 2021; 12:745469. PMID: 34899632; PMCID: PMC8656163.
      Citations: 1     
    10. Luck B, Horvath TD, Engevik KA, Ruan W, Haidacher SJ, Hoch KM, Oezguen N, Spinler JK, Haag AM, Versalovic J, Engevik MA. Neurotransmitter Profiles Are Altered in the Gut and Brain of Mice Mono-Associated with Bifidobacterium dentium. Biomolecules. 2021 07 23; 11(8). PMID: 34439760; PMCID: PMC8392031.
      Citations: 4     Fields:    Translation:AnimalsCells
    11. Engevik MA, Danhof HA, Hall A, Engevik KA, Horvath TD, Haidacher SJ, Hoch KM, Endres BT, Bajaj M, Garey KW, Britton RA, Spinler JK, Haag AM, Versalovic J. The metabolic profile of Bifidobacterium dentium reflects its status as a human gut commensal. BMC Microbiol. 2021 05 24; 21(1):154. PMID: 34030655; PMCID: PMC8145834.
      Citations: 5     Fields:    Translation:HumansCells
    12. Thapa S, Venkatachalam A, Khan N, Naqvi M, Balderas M, Runge JK, Haag A, Hoch KM, Glaze DG, Luna RA, Motil KJ. Assessment of the gut bacterial microbiome and metabolome of girls and women with Rett Syndrome. PLoS One. 2021; 16(5):e0251231. PMID: 33956889; PMCID: PMC8101921.
      Citations: 2     Fields:    Translation:Humans
    13. Ihekweazu FD, Engevik MA, Ruan W, Shi Z, Fultz R, Engevik KA, Chang-Graham AL, Freeborn J, Park ES, Venable S, Horvath TD, Haidacher SJ, Haag AM, Goodwin A, Schady DA, Hyser JM, Spinler JK, Liu Y, Versalovic J. Bacteroides ovatus Promotes IL-22 Production and Reduces Trinitrobenzene Sulfonic Acid-Driven Colonic Inflammation. Am J Pathol. 2021 04; 191(4):704-719. PMID: 33516788; PMCID: PMC8027925.
      Citations: 7     Fields:    Translation:HumansAnimalsCells
    14. Engevik MA, Herrmann B, Ruan W, Engevik AC, Engevik KA, Ihekweazu F, Shi Z, Luck B, Chang-Graham AL, Esparza M, Venable S, Horvath TD, Haidacher SJ, Hoch KM, Haag AM, Schady DA, Hyser JM, Spinler JK, Versalovic J. Bifidobacterium dentium-derived y-glutamylcysteine suppresses ER-mediated goblet cell stress and reduces TNBS-driven colonic inflammation. Gut Microbes. 2021 Jan-Dec; 13(1):1-21. PMID: 33985416; PMCID: PMC8128206.
      Citations: 8     Fields:    Translation:HumansAnimalsCells
    15. Engevik MA, Danhof HA, Shrestha R, Chang-Graham AL, Hyser JM, Haag AM, Mohammad MA, Britton RA, Versalovic J, Sorg JA, Spinler JK. Reuterin disrupts Clostridioides difficile metabolism and pathogenicity through reactive oxygen species generation. Gut Microbes. 2020 11 09; 12(1):1788898. PMID: 32804011; PMCID: PMC7524292.
      Citations: 7     Fields:    Translation:HumansCells
    16. Engevik MA, Luck B, Visuthranukul C, Ihekweazu FD, Engevik AC, Shi Z, Danhof HA, Chang-Graham AL, Hall A, Endres BT, Haidacher SJ, Horvath TD, Haag AM, Devaraj S, Garey KW, Britton RA, Hyser JM, Shroyer NF, Versalovic J. Human-Derived Bifidobacterium dentium Modulates the Mammalian Serotonergic System and Gut-Brain Axis. Cell Mol Gastroenterol Hepatol. 2021; 11(1):221-248. PMID: 32795610; PMCID: PMC7683275.
      Citations: 18     Fields:    Translation:HumansAnimalsCells
    17. Horvath TD, Haidacher SJ, Oezguen N, Hoch KM, Auchtung JM, Haag AM. Ruggedness testing of liquid chromatography-tandem mass spectrometry system components using microbiome-relevant methods and matrices. J Microbiol Methods. 2020 10; 177:106020. PMID: 32795635.
      Citations: 1     Fields:    Translation:HumansCells
    18. Horvath TD, Haidacher SJ, Hoch KM, Auchtung JM, Haag AM. A high-throughput LC-MS/MS method for the measurement of the bile acid/salt content in microbiome-derived sample sets. MethodsX. 2020; 7:100951. PMID: 32637329; PMCID: PMC7327831.
    19. Blasco MP, Chauhan A, Honarpisheh P, Ahnstedt H, d'Aigle J, Ganesan A, Ayyaswamy S, Blixt F, Venable S, Major A, Durgan D, Haag A, Kofler J, Bryan R, McCullough LD, Ganesh BP. Age-dependent involvement of gut mast cells and histamine in post-stroke inflammation. J Neuroinflammation. 2020 May 19; 17(1):160. PMID: 32429999; PMCID: PMC7236952.
      Citations: 10     Fields:    Translation:AnimalsCells
    20. Hung LY, Parathan P, Boonma P, Wu Q, Wang Y, Haag A, Luna RA, Bornstein JC, Savidge TC, Foong JPP. Antibiotic exposure postweaning disrupts the neurochemistry and function of enteric neurons mediating colonic motor activity. Am J Physiol Gastrointest Liver Physiol. 2020 06 01; 318(6):G1042-G1053. PMID: 32390463; PMCID: PMC7311661.
      Citations: 8     Fields:    Translation:Animals
    21. Hall AE, Engevik MA, Oezguen N, Haag A, Versalovic J. ClC transporter activity modulates histidine catabolism in Lactobacillus reuteri by altering intracellular pH and membrane potential. Microb Cell Fact. 2019 Dec 12; 18(1):212. PMID: 31830990; PMCID: PMC6909576.
      Citations: 1     Fields:    Translation:Cells
    22. Fultz R, Engevik MA, Shi Z, Hall A, Herrmann B, Ganesh BP, Major A, Haag A, Mori-Akiyama Y, Versalovic J. Phagocytosis by macrophages depends on histamine H2 receptor signaling and scavenger receptor 1. Microbiologyopen. 2019 10; 8(10):e908. PMID: 31369218; PMCID: PMC6813435.
      Citations: 6     Fields:    Translation:AnimalsCells
    23. Horvath TD, Ak S, Haidacher SJ, Hoch KM, Savidge TC, Haag AM. Sterilization performance comparison between an autosampler-ready microporous filter vial and a syringe-based filter. J Microbiol Methods. 2019 09; 164:105669. PMID: 31356842; PMCID: PMC6732000.
      Citations:    Fields:    Translation:CellsPHPublic Health
    24. Hung LY, Boonma P, Unterweger P, Parathan P, Haag A, Luna RA, Bornstein JC, Savidge TC, Foong JPP. Neonatal Antibiotics Disrupt?Motility and Enteric Neural Circuits in Mouse Colon. Cell Mol Gastroenterol Hepatol. 2019; 8(2):298-300.e6. PMID: 31022477; PMCID: PMC6717783.
      Citations: 7     Fields:    Translation:Animals
    25. Bajaj JS, Kakiyama G, Savidge T, Takei H, Kassam ZA, Fagan A, Gavis EA, Pandak WM, Nittono H, Hylemon PB, Boonma P, Haag A, Heuman DM, Fuchs M, John B, Sikaroodi M, Gillevet PM. Antibiotic-Associated Disruption of Microbiota Composition and Function in Cirrhosis Is Restored by Fecal Transplant. Hepatology. 2018 10; 68(4):1549-1558. PMID: 29665102.
      Citations: 43     Fields:    Translation:HumansCTClinical Trials
    26. Spinler JK, Auchtung J, Brown A, Boonma P, Oezguen N, Luna RA, Runge J, Versalovic J, Peniche A, Dann SM, Britton RA, Haag A, Savidge TC, Ross CL. Next-Generation Probiotics Targeting Clostridium difficile through Precursor-Directed Antimicrobial Biosynthesis. Infect Immun. 2017 10; 85(10). PMID: 28760934; PMCID: PMC5607411.
      Citations: 25     Fields:    Translation:HumansCells
    27. Gao C, Ganesh BP, Shi Z, Shah RR, Fultz R, Major A, Venable S, Lugo M, Hoch K, Chen X, Haag A, Wang TC, Versalovic J. Gut Microbe-Mediated Suppression of Inflammation-Associated Colon Carcinogenesis by Luminal Histamine Production. Am J Pathol. 2017 Oct; 187(10):2323-2336. PMID: 28917668; PMCID: PMC5809336.
      Citations: 36     Fields:    Translation:HumansAnimalsCells
    28. Haag AM. Mass Analyzers and Mass Spectrometers. Adv Exp Med Biol. 2016; 919:157-169. PMID: 27975216.
      Citations: 12     Fields:    Translation:HumansAnimals
    29. Haag AM, Medina AM, Royall AE, Herzog NK, Niesel DW. Monitoring bacterial resistance to chloramphenicol and other antibiotics by liquid chromatography electrospray ionization tandem mass spectrometry using selected reaction monitoring. J Mass Spectrom. 2013 Jun; 48(6):732-9. PMID: 23722964.
      Citations: 1     Fields:    Translation:Cells
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