Publications:

• 43. Khaled Abdelaziz, Yosra A Helmy, Alexander Yitbarek, Douglas C Hodgins, Tamer A Sharafeldin, Mohamed S H Selim (2024).
  Advances in Poultry Vaccines: Leveraging Biotechnology for Improving Vaccine Development, Stability, and Delivery..
  Vaccines, 12(2), 134.
  https://doi.org/10.3390/vaccines12020134
• 42. Khaled Taha-Abdelaziz, Mankerat Singh, Shayan Sharif, Shreeya Sharma, Raveendra R Kulkarni, Mohammadali Alizadeh, Alexander Yitbarek, Yosra A Helmy (2023).
  Intervention Strategies to Control Campylobacter at Different Stages of the Food Chain..
  Microorganisms, 11(1), 113.
  https://doi.org/10.3390/microorganisms11010113
• 41. Seyed Hossien Kairmi, Khaled Taha-Abdelaziz, Alexander Yitbarek, Mehdi Sargolzaei, Heidi Spahany, Jake Astill, Bahram Shojadoost, Mohammadali Alizadeh, Raveendra R Kulkarni, John Parkinson, Shayan Sharif (2022).
  Effects of therapeutic levels of dietary antibiotics on the cecal microbiome composition of broiler chickens..
  Poultry science, 101(6), 101864.
  https://doi.org/10.1016/j.psj.2022.101864
• 40. S Uribe-Diaz, N Nazeer, J Jaime, D S Vargas-Bermúdez, A Yitbarek, M Ahmed, J C Rodríguez-Lecompte (2022).
  Folic acid enhances proinflammatory and antiviral molecular pathways in chicken B-lymphocytes infected with a mild infectious bursal disease virus..
  British poultry science, 63(1), 1-13.
  https://doi.org/10.1080/00071668.2021.1958298
• 39. Xiao-Ting Xie, Alexander Yitbarek, Jake Astill, Shirene Singh, Salah Uddin Khan, Shayan Sharif, Zvonimir Poljak, Amy L Greer (2021).
  Within-host model of respiratory virus shedding and antibody response to H9N2 avian influenza virus vaccination and infection in chickens..
  Infectious Disease Modelling, 6(.na.character), 490-502.
  https://doi.org/10.1016/j.idm.2021.02.005
• 38. Bahram Shojadoost, Alexander Yitbarek, Mohammadali Alizadeh, Raveendra R Kulkarni, Jake Astill, Nitish Boodhoo, Shayan Sharif (2021).
  Centennial Review: Effects of vitamins A, D, E, and C on the chicken immune system..
  Poultry science, 100(4), 100930.
  https://doi.org/10.1016/j.psj.2020.12.027
• 37. H Echeverry, M Alizadeh, A Yitbarek, B Slominski, J C Rodriguez-Lecompte (2021).
  Yeast cell wall polysaccharides enhanced expression of T helper type 1 and 2 cytokines profile in chicken B lymphocytes exposed to LPS challenge and enzyme treatment..
  British poultry science, 62(1), 125-130.
  https://doi.org/10.1080/00071668.2020.1817328
• 36. J Jaime, D S Vargas-Bermúdez, A Yitbarek, J Reyes, J C Rodríguez-Lecompte (2020).
  Differential immunomodulatory effect of vitamin D (1,25 (OH)2 D3) on the innate immune response in different types of cells infected in vitro with infectious bursal disease virus..
  Poultry science, 99(9), 4265-4277.
  https://doi.org/10.1016/j.psj.2020.06.006
• 35. O Elad, S Uribe-Diaz, D Losada-Medina, A Yitbarek, S Sharif, J C Rodriguez-Lecompte (2020).
  Epigenetic effect of folic acid (FA) on the gene proximal promoter area and mRNA expression of chicken B cell as antigen presenting cells..
  British poultry science, 61(6), 725-733.
  https://doi.org/10.1080/00071668.2020.1799332
• 34. Bahram Shojadoost, Khaled Taha-Abdelaziz, Tamiru Negash Alkie, Alexander Bekele-Yitbarek, Neda Barjesteh, Adrianna Laursen, Trevor K Smith, Janan Shojadoost, Shayan Sharif (2020).
  Supplemental dietary selenium enhances immune responses conferred by a vaccine against low pathogenicity avian influenza virus..
  Veterinary immunology and immunopathology, 227(.na.character), 110089.
  https://doi.org/10.1016/j.vetimm.2020.110089
• 33. Daniela Losada-Medina, Alexander Yitbarek, Nauman Nazeer, Santiago Uribe-Diaz, Marya Ahmed, Juan C Rodriguez-Lecompte (2020).
  Identification, tissue characterization, and innate immune role of Angiogenin-4 expression in young broiler chickens..
  Poultry science, 99(6), 2992-3000.
  https://doi.org/10.1016/j.psj.2020.03.022
• 32. Xiao-Ting Xie, Alexander Yitbarek, Salah Uddin Khan, Shayan Sharif, Zvonimir Poljak, Amy L Greer (2020).
  A within-host mathematical model of H9N2 avian influenza infection and type-I interferon response pathways in chickens..
  Journal of theoretical biology, 499(.na.character), 110320.
  https://doi.org/10.1016/j.jtbi.2020.110320
• 31. Alexander Yitbarek, Jake Astill, Douglas C Hodgins, John Parkinson, Éva Nagy, Shayan Sharif (2019).
  Commensal gut microbiota can modulate adaptive immune responses in chickens vaccinated with whole inactivated avian influenza virus subtype H9N2..
  Vaccine, 37(44), 6640-6647.
  https://doi.org/10.1016/j.vaccine.2019.09.046
• 30. Tamiru N Alkie, Alexander Yitbarek, Douglas C Hodgins, Raveendra R Kulkarni, Khaled Taha-Abdelaziz, Shayan Sharif (2019).
  Development of innate immunity in chicken embryos and newly hatched chicks: a disease control perspective..
  Avian pathology : journal of the W.V.P.A, 48(4), 288-310.
  https://doi.org/10.1080/03079457.2019.1607966
• 29. Bahram Shojadoost, Raveendra R Kulkarni, Alexander Yitbarek, Adrianna Laursen, Khaled Taha-Abdelaziz, Tamiru Negash Alkie, Neda Barjesteh, Wanderly M Quinteiro-Filho, Trevor K Smith, Shayan Sharif (2019).
  Dietary selenium supplementation enhances antiviral immunity in chickens challenged with low pathogenic avian influenza virus subtype H9N2..
  Veterinary immunology and immunopathology, 207(.na.character), 62-68.
  https://doi.org/10.1016/j.vetimm.2018.12.002
• 28. H Leung, A Yitbarek, R Snyder, R Patterson, J R Barta, N Karrow, E Kiarie (2019).
  Responses of broiler chickens to Eimeria challenge when fed a nucleotide-rich yeast extract..
  Poultry science, 98(4), 1622-1633.
  https://doi.org/10.3382/ps/pey533
• 27. Jegarubee Bavananthasivam, Leah Read, Jake Astill, Alexander Yitbarek, Tamiru N Alkie, Mohamed Faizal Abdul-Careem, Sarah K Wootton, Shahriar Behboudi, Shayan Sharif (2018).
  The effects of in ovo administration of encapsulated Toll-like receptor 21 ligand as an adjuvant with Marek's disease vaccine..
  Scientific reports, 8(1), 16370.
  https://doi.org/10.1038/s41598-018-34760-6
• 26. Tamiru Negash Alkie, Alexander Yitbarek, Khaled Taha-Abdelaziz, Jake Astill, Shayan Sharif (2018).
  Characterization of immunogenicity of avian influenza antigens encapsulated in PLGA nanoparticles following mucosal and subcutaneous delivery in chickens..
  PloS one, 13(11), e0206324.
  https://doi.org/10.1371/journal.pone.0206324
• 25. Alexander Yitbarek, Khaled Taha-Abdelaziz, Douglas C Hodgins, Leah Read, Éva Nagy, J Scott Weese, Jeff L Caswell, John Parkinson, Shayan Sharif (2018).
  Author Correction: Gut microbiota-mediated protection against influenza virus subtype H9N2 in chickens is associated with modulation of the innate responses..
  Scientific reports, 8(1), 16367.
  https://doi.org/10.1038/s41598-018-34065-8
• 24. Jake Astill, Tamiru Alkie, Alexander Yitbarek, Khaled Taha-Abdelaziz, Bahram Shojadoost, James John Petrik, Éva Nagy, Shayan Sharif (2018).
  A Comparison of Toll-Like Receptor 5 and 21 Ligands as Adjuvants for a Formaldehyde Inactivated H9N2 Avian Influenza Virus Vaccine in Chickens..
  Viral immunology, 31(9), 605-612.
  https://doi.org/10.1089/vim.2018.0072
• 23. Alexander Yitbarek, Khaled Taha-Abdelaziz, Douglas C Hodgins, Leah Read, Éva Nagy, J Scott Weese, Jeff L Caswell, John Parkinson, Shayan Sharif (2018).
  Gut microbiota-mediated protection against influenza virus subtype H9N2 in chickens is associated with modulation of the innate responses..
  Scientific reports, 8(1), 13189.
  https://doi.org/10.1038/s41598-018-31613-0
• 22. Khaled Taha-Abdelaziz, Alexander Yitbarek, Tamiru Negash Alkie, Douglas C Hodgins, Leah R Read, J Scott Weese, Shayan Sharif (2018).
  PLGA-encapsulated CpG ODN and Campylobacter jejuni lysate modulate cecal microbiota composition in broiler chickens experimentally challenged with C. jejuni..
  Scientific reports, 8(1), 12076.
  https://doi.org/10.1038/s41598-018-30510-w
• 21. Jake Astill, Tamiru Alkie, Alexander Yitbarek, Khaled Taha-Abdelaziz, Jegarubee Bavananthasivam, Éva Nagy, James John Petrik, Shayan Sharif (2018).
  Induction of immune response in chickens primed in ovo with an inactivated H9N2 avian influenza virus vaccine..
  BMC research notes, 11(1), 428.
  https://doi.org/10.1186/s13104-018-3537-9
• 20. Jegarubee Bavananthasivam, Tamiru N Alkie, Jake Astill, Mohamed Faizal Abdul-Careem, Sarah K Wootton, Shahriar Behboudi, Alexander Yitbarek, Shayan Sharif (2018).
  In ovo administration of Toll-like receptor ligands encapsulated in PLGA nanoparticles impede tumor development in chickens infected with Marek's disease virus..
  Vaccine, 36(28), 4070-4076.
  https://doi.org/10.1016/j.vaccine.2018.05.091
• 19. Jake Astill, Tamiru Alkie, Alexander Yitbarek, Khaled Taha-Abdelaziz, Jegarubee Bavananthasivam, Éva Nagy, James John Petrik, Shayan Sharif (2018).
  Examination of the effects of virus inactivation methods on the induction of antibody- and cell-mediated immune responses against whole inactivated H9N2 avian influenza virus vaccines in chickens..
  Vaccine, 36(27), 3908-3916.
  https://doi.org/10.1016/j.vaccine.2018.05.093
• 18. A Yitbarek, T Alkie, K Taha-Abdelaziz, J Astill, J C Rodriguez-Lecompte, J Parkinson, É Nagy, S Sharif (2018).
  Gut microbiota modulates type I interferon and antibody-mediated immune responses in chickens infected with influenza virus subtype H9N2..
  Beneficial microbes, 9(3), 417-427.
  https://doi.org/10.3920/BM2017.0088
• 17. Alexander Yitbarek, J Scott Weese, Tamiru Negash Alkie, John Parkinson, Shayan Sharif (2018).
  Influenza A virus subtype H9N2 infection disrupts the composition of intestinal microbiota of chickens..
  FEMS microbiology ecology, 94(1), .na.character.
  https://doi.org/10.1093/femsec/fix165
• 16. Khaled Taha-Abdelaziz, Douglas C Hodgins, Tamiru Negash Alkie, Wanderely Quinteiro-Filho, Alexander Yitbarek, Jake Astill, Shayan Sharif (2018).
  Oral administration of PLGA-encapsulated CpG ODN and Campylobacter jejuni lysate reduces cecal colonization by Campylobacter jejuni in chickens..
  Vaccine, 36(3), 388-394.
  https://doi.org/10.1016/j.vaccine.2017.11.073
• 15. Khaled Taha-Abdelaziz, Tamiru Negash Alkie, Douglas C Hodgins, Alexander Yitbarek, Bahram Shojadoost, Shayan Sharif (2017).
  Gene expression profiling of chicken cecal tonsils and ileum following oral exposure to soluble and PLGA-encapsulated CpG ODN, and lysate of Campylobacter jejuni..
  Veterinary microbiology, 212(.na.character), 67-74.
  https://doi.org/10.1016/j.vetmic.2017.11.010
• 14. S M Waititu, F Yin, R Patterson, A Yitbarek, J C Rodriguez-Lecompte, C M Nyachoti (2017).
  Dietary supplementation with a nucleotide-rich yeast extract modulates gut immune response and microflora in weaned pigs in response to a sanitary challenge..
  Animal : an international journal of animal bioscience, 11(12), 2156-2164.
  https://doi.org/10.1017/S1751731117001276
• 13. M Alizadeh, P Munyaka, A Yitbarek, H Echeverry, J C Rodriguez-Lecompte (2017).
  Maternal antibody decay and antibody-mediated immune responses in chicken pullets fed prebiotics and synbiotics..
  Poultry science, 96(1), 58-64.
  https://doi.org/10.3382/ps/pew244
• 12. J C Rodriguez-Lecompte, A Yitbarek, T Cuperus, H Echeverry, A van Dijk (2016).
  The immunomodulatory effect of vitamin D in chickens is dose-dependent and influenced by calcium and phosphorus levels..
  Poultry science, 95(11), 2547-2556.
  https://doi.org/10.3382/ps/pew186
• 11. M Alizadeh, J C Rodriguez-Lecompte, A Yitbarek, S Sharif, G Crow, B A Slominski (2016).
  Effect of yeast-derived products on systemic innate immune response of broiler chickens following a lipopolysaccharide challenge..
  Poultry science, 95(10), 2266-73.
  https://doi.org/10.3382/ps/pew154
• 10. H Echeverry, A Yitbarek, P Munyaka, M Alizadeh, A Cleaver, G Camelo-Jaimes, P Wang, K O, J C Rodriguez-Lecompte (2016).
  Organic trace mineral supplementation enhances local and systemic innate immune responses and modulates oxidative stress in broiler chickens..
  Poultry science, 95(3), 518-27.
  https://doi.org/10.3382/ps/pev374
• 9. A Yitbarek, H Echeverry, P Munyaka, J C Rodriguez-Lecompte (2015).
  Innate immune response of pullets fed diets supplemented with prebiotics and synbiotics..
  Poultry science, 94(8), 1802-11.
  https://doi.org/10.3382/ps/pev147
• 8. Michel Rey, Juan Rodriguez-Lecompte, Michael Undi, Tomy Joseph, Jason Morrison, Alex Yitbarek, Karin Wittenberg, Robert Tremblay, Gary Crow, Kim Ominski (2015).
  Efficacy of needle-free injection on antibody production against Clostridium chauvoei in beef calves under field conditions..
  The Canadian veterinary journal = La revue veterinaire canadienne, 56(4), 405-7.
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• 7. S M Waititu, A Yitbarek, E Matini, H Echeverry, E Kiarie, J C Rodriguez-Lecompte, C M Nyachoti (2014).
  Effect of supplementing direct-fed microbials on broiler performance, nutrient digestibilities, and immune responses..
  Poultry science, 93(3), 625-35.
  https://doi.org/10.3382/ps.2013-03575
• 6. Michel R Rey, Michael Undi, Juan C Rodriguez-Lecompte, Tomy Joseph, Jason Morrison, Alexander Yitbarek, Karin Wittenberg, Robert Tremblay, Gary H Crow, Kim H Ominski (2013).
  A study of the effectiveness of a needle-free injection device compared with a needle and syringe used to vaccinate calves against bovine viral diarrhea and infectious bovine rhinotracheitis viruses..
  Veterinary journal (London, England : 1997), 198(1), 235-8.
  https://doi.org/10.1016/j.tvjl.2013.06.019
• 5. A Yitbarek, J C Rodriguez-Lecompte, H M Echeverry, P Munyaka, N Barjesteh, S Sharif, G Camelo-Jaimes (2013).
  Performance, histomorphology, and toll-like receptor, chemokine, and cytokine profile locally and systemically in broiler chickens fed diets supplemented with yeast-derived macromolecules..
  Poultry science, 92(9), 2299-310.
  https://doi.org/10.3382/ps.2013-03141
• 4. P M Munyaka, H Echeverry, A Yitbarek, G Camelo-Jaimes, S Sharif, W Guenter, J D House, J C Rodriguez-Lecompte (2012).
  Local and systemic innate immunity in broiler chickens supplemented with yeast-derived carbohydrates..
  Poultry science, 91(9), 2164-72.
  https://doi.org/10.3382/ps.2012-02306
• 3. A Yitbarek, H Echeverry, J Brady, J Hernandez-Doria, G Camelo-Jaimes, S Sharif, W Guenter, J D House, J C Rodriguez-Lecompte (2012).
  Innate immune response to yeast-derived carbohydrates in broiler chickens fed organic diets and challenged with Clostridium perfringens..
  Poultry science, 91(5), 1105-12.
  https://doi.org/10.3382/ps.2011-02109
• 2. J C Rodríguez-Lecompte, A Yitbarek, J Brady, S Sharif, M D Cavanagh, G Crow, W Guenter, J D House, G Camelo-Jaimes (2012).
  The effect of microbial-nutrient interaction on the immune system of young chicks after early probiotic and organic acid administration..
  Journal of animal science, 90(7), 2246-54.
  https://doi.org/10.2527/jas.2011-4184
• 1. E Kebreab, A B Strathe, A Yitbarek, C M Nyachoti, J Dijkstra, S Lopez, J France (2011).
  Modeling the efficiency of phosphorus utilization in growing pigs..
  Journal of animal science, 89(9), 2774-81.
  https://doi.org/10.2527/jas.2009-2550