Keywords
Last Name

Richard F. Hoyt Jr, PhD

TitleAssociate Professor
InstitutionBoston University School of Medicine
DepartmentAnatomy & Neurobiology
Address72 E. Concord St Instructional (L)
Boston MA 02118
Phone(617) 638-4535
ORCID ORCID Icon0000-0001-6762-6495
Other Positions
TitleGraduate Faculty (Primary Mentor of Grad Students)
InstitutionBoston University School of Medicine, Division of Graduate Medical Sciences

 Research Expertise & Professional Interests
Dr. Hoyt received his B.S. from Bates College and a Ph.D. in Anatomy from Harvard University and has been a member of the Department of Anatomy and Neurobiology since 1973.

Dr. Hoyt is one of the premier instructors at BUSM. He has taught and directed courses in a wide range of the biomedical sciences, including anatomy, histology, endocrinology and embryology. He is presently one of the section directors in Medical Gross Anatomy course and is a co-director in the Advanced Clinical Anatomy course offered each Spring.

Dr. Hoyt has been the recipient of several teaching awards including the Stanley L. Robbins Award and Instructor of the Year in the Pre-Clinical Sciences. He is renowned for his remarkable commitment to teaching, his unique lecture style, and comprehensive knowledge of human anatomy, histology, and cellular and molecular biology.

Earlier in his career, Dr. Hoyt focused his research on the origin, development and function of endocrine cells in the lung and, with his colleagues, published over 45 research articles and chapters in the area. More recently, he has been working in collaboration with Dr. Abdul Traish overseeing a Ph.D. thesis by Monica Pessina, a graduate student in the department, on the effects of ovariectomy and steroid hormone administration on tissue morphology, hormone receptor expression and innervation in the rat vagina.

 Publications
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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  1. Cushman TT, Kim N, Hoyt R, Traish AM. Estradiol ameliorates diabetes-induced changes in vaginal structure of db/db mouse model. J Sex Med. 2009 Sep; 6(9):2467-79. PMID: 19453883.
    View in: PubMed
  2. Cushman T, Kim N, Hoyt R, Traish AM. Estradiol restores diabetes-induced reductions in sex steroid receptor expression and distribution in the vagina of db/db mouse model. J Steroid Biochem Mol Biol. 2009 Apr; 114(3-5):186-94. PMID: 19429450.
    View in: PubMed
  3. Pessina MA, Hoyt RF, Goldstein I, Traish AM. Differential regulation of the expression of estrogen, progesterone, and androgen receptors by sex steroid hormones in the vagina: immunohistochemical studies. J Sex Med. 2006 Sep; 3(5):804-14. PMID: 16942525.
    View in: PubMed
  4. Ruberg FL, McDonnell ME, Trabb J, Shemin RJ, Hoyt RF, Braverman LE, Balady GJ. An intracardiac accessory thyroid gland. Am J Cardiol. 2006 Mar 15; 97(6):926-8. PMID: 16516604.
    View in: PubMed
  5. Pessina MA, Hoyt RF, Goldstein I, Traish AM. Differential effects of estradiol, progesterone, and testosterone on vaginal structural integrity. Endocrinology. 2006 Jan; 147(1):61-9. PMID: 16210369.
    View in: PubMed
  6. Sorokin SP, Hoyt RF, Reenstra WR, McNelly NA. Factors influencing fetal macrophage development: III. Immunocytochemical localization of cytokines and time-resolved expression of differentiation markers in organ-cultured rat lungs. Anat Rec. 1997 May; 248(1):93-103. PMID: 9143672.
    View in: PubMed
  7. Sorokin SP, Hoyt RF, Shaffer MJ. Ontogeny of neuroepithelial bodies: correlations with mitogenesis and innervation. Microsc Res Tech. 1997 Apr 1; 37(1):43-61. PMID: 9144621.
    View in: PubMed
  8. Ebina M, Hoyt RF, McNelly NA, Sorokin SP, Linnoila RI. Effects of hydrogen and bicarbonate ions on endocrine cells in fetal rat lung organ cultures. Am J Physiol. 1997 Feb; 272(2 Pt 1):L178-86. PMID: 9124367.
    View in: PubMed
  9. Sorokin SP, McNelly NA, Hoyt RF. Factors influencing fetal macrophage development: II. Effects of the PDGF subfamily of protein-tyrosine kinase receptor ligands as studied in organ-cultured rat lungs. Anat Rec. 1996 Dec; 246(4):498-506. PMID: 8955789.
    View in: PubMed
  10. Sorokin SP, Hoyt RF, McNelly NA. Factors influencing fetal macrophage development: I. Reactions of the tumor necrosis factor-alpha cascade and their inhibitors. Anat Rec. 1996 Dec; 246(4):481-97. PMID: 8955788.
    View in: PubMed
  11. Sorokin SP, McNelly NA, Hoyt RF. Exogenous cytokines enhance survival of macrophages from organ cultured embryonic rat tissues. Anat Rec. 1994 Nov; 240(3):398-406. PMID: 7825736.
    View in: PubMed
  12. Sorokin SP, McNelly NA, Hoyt RF, Svoboda KK. Precursors of macrophages in embryonic rat lungs fail to exhibit granulocyte-forming potential. Anat Rec. 1994 Nov; 240(3):387-97. PMID: 7825735.
    View in: PubMed
  13. Sorokin SP, McNelly NA, Hoyt RF. Early development of macrophages in intact and organ cultured hearts of rat embryos. Anat Rec. 1994 Jul; 239(3):306-14. PMID: 7943762.
    View in: PubMed
  14. McDowell EM, Sorokin SP, Hoyt RF. Ontogeny of endocrine cells in the respiratory system of Syrian golden hamsters. I. Larynx and trachea. Cell Tissue Res. 1994 Jan; 275(1):143-56. PMID: 8118840.
    View in: PubMed
  15. McDowell EM, Hoyt RF, Sorokin SP. Ontogeny of endocrine cells in the respiratory system of Syrian golden hamsters. II. Intrapulmonary airways and alveoli. Cell Tissue Res. 1994 Jan; 275(1):157-67. PMID: 8118841.
    View in: PubMed
  16. Ebina M, Hoyt RF, Sorokin SP, McNelly NA. Calcium and ionophore A23187 lower calcitonin gene-related peptide-like immunoreactivity in endocrine cells of organ cultured fetal rat lungs. Anat Rec. 1993 May; 236(1):226-30. PMID: 8507010.
    View in: PubMed
  17. Hoyt RF, Sorokin SP, McDowell EM, McNelly NA. Neuroepithelial bodies and growth of the airway epithelium in developing hamster lung. Anat Rec. 1993 May; 236(1):15-22; discussion 22-4. PMID: 8507001.
    View in: PubMed
  18. Sorokin SP, Ebina M, Hoyt RF. Development of PGP 9.5- and calcitonin gene-related peptide-like immunoreactivity in organ cultured fetal rat lungs. Anat Rec. 1993 May; 236(1):213-25. PMID: 8507009.
    View in: PubMed
  19. Sorokin SP, McNelly NA, Hoyt RF. CFU-rAM, the origin of lung macrophages, and the macrophage lineage. Am J Physiol. 1992 Sep; 263(3 Pt 1):L299-307. PMID: 1415555.
    View in: PubMed
  20. Sorokin SP, McNelly NA, Hoyt RF. Macrophage development: IV. Effects of blood factors on macrophages from prenatal rat lung cultures. Anat Rec. 1992 Jul; 233(3):415-28. PMID: 1609973.
    View in: PubMed
  21. Sorokin SP, Hoyt RF, Blunt DG, McNelly NA. Macrophage development: II. Early ontogeny of macrophage populations in brain, liver, and lungs of rat embryos as revealed by a lectin marker. Anat Rec. 1992 Apr; 232(4):527-50. PMID: 1554104.
    View in: PubMed
  22. Sorokin SP, Hoyt RF. Macrophage development: I. Rationale for using Griffonia simplicifolia isolectin B4 as a marker for the line. Anat Rec. 1992 Apr; 232(4):520-6. PMID: 1372795.
    View in: PubMed
  23. Sorokin SP, McNelly NA, Blunt DG, Hoyt RF. Macrophage development: III. Transformation of pulmonary macrophages from precursors in fetal lungs and their later maturation in organ culture. Anat Rec. 1992 Apr; 232(4):551-71. PMID: 1554105.
    View in: PubMed
  24. Hoyt RF, McNelly NA, McDowell EM, Sorokin SP. Neuroepithelial bodies stimulate proliferation of airway epithelium in fetal hamster lung. Am J Physiol. 1991 Apr; 260(4 Pt 1):L234-40. PMID: 2018146.
    View in: PubMed
  25. Hoyt RF, McNelly NA, Sorokin SP. Dynamics of neuroepithelial body (NEB) formation in developing hamster lung: light microscopic autoradiography after 3H-thymidine labeling in vivo. Anat Rec. 1990 Jul; 227(3):340-50. PMID: 2372138.
    View in: PubMed
  26. Sorokin SP, Kobzik L, Hoyt RF, Godleski JJ. Development of surface membrane characteristics of "premedullary" macrophages in organ cultures of embryonic rat and hamster lungs. J Histochem Cytochem. 1989 Mar; 37(3):365-76. PMID: 2521877.
    View in: PubMed
  27. Sorokin SP, Hoyt RF, McNelly NA. Nonimmune-mediated phagocytosis by "premedullary" lung macrophages: effects of concanavalin A, tuftsin, and macrophage-inhibitory peptide. Anat Rec. 1989 Jan; 223(1):55-61. PMID: 2644875.
    View in: PubMed
  28. Sorokin SP, Hoyt RF. Pure population of nonmonocyte derived macrophages arising in organ cultures of embryonic rat lungs. Anat Rec. 1987 Jan; 217(1):35-52. PMID: 3454563.
    View in: PubMed
  29. Hoyt RF, Sorokin SP, McDowell EM, Trump BF. Periodic acid-Schiff-lead hematoxylin as a marker for the endocrine phenotype in human lung tumors. Arch Pathol Lab Med. 1986 Oct; 110(10):943-51. PMID: 2429639.
    View in: PubMed
  30. Sarikas SN, Hoyt RF, Sorokin SP. Small-granule APUD cells in relation to airway branching and growth: a quantitative, cartographic study in Syrian golden hamsters. Anat Rec. 1985 Nov; 213(3):410-20. PMID: 2866735.
    View in: PubMed
  31. Sarikas SN, Hoyt RF, Sorokin SP. Ontogeny of small-granule APUD cells in hamster lung: a morphological study. Anat Rec. 1985 Nov; 213(3):396-409. PMID: 2866734.
    View in: PubMed
  32. Pearsall AD, Hoyt RF, Sorokin SP. Three-dimensional reconstruction of a small-granule paracrine cell cluster in an adult hamster bronchus. Anat Rec. 1985 Jun; 212(2):132-42, 156-7. PMID: 2876661.
    View in: PubMed
  33. Carabba VH, Sorokin SP, Hoyt RF. Development of neuroepithelial bodies in intact and cultured lungs of fetal rats. Am J Anat. 1985 May; 173(1):1-27. PMID: 4003323.
    View in: PubMed
  34. Sorokin SP, Hoyt RF, Grant MM. Development of macrophages in the lungs of fetal rabbits, rats, and hamsters. Anat Rec. 1984 Jan; 208(1):103-21. PMID: 6711832.
    View in: PubMed
  35. Sorokin SP, Hoyt RF, Pearsall AD. Comparative biology of small granule cells and neuroepithelial bodies in the respiratory system. Short review. Am Rev Respir Dis. 1983 Aug; 128(2 Pt 2):S26-31. PMID: 6881703.
    View in: PubMed
  36. Sorokin SP, Hoyt RF. Development of neuroepithelial bodies and solitary endocrine cells in fetal rabbit lungs. II. Nonspecific esterase as an indicator of early maturation. Exp Lung Res. 1982 Nov; 3(3-4):261-72. PMID: 6132810.
    View in: PubMed
  37. Hoyt RF, Sorokin SP, Feldman H. Small-granule (neuro)endocrine cells in the infracardiac lobe of a hamster lung. Number, subtypes, and distribution. Exp Lung Res. 1982 Nov; 3(3-4):273-98. PMID: 6132811.
    View in: PubMed
  38. Sorokin SP, Hoyt RF, Grant MM. Development of neuroepithelial bodies in fetal rabbit lungs. I. Appearance and functional maturation as demonstrated by high-resolution light microscopy and formaldehyde-induced fluorescence. Exp Lung Res. 1982 Nov; 3(3-4):237-59. PMID: 6132809.
    View in: PubMed
  39. Hoyt RF, Feldman H, Sorokin SP. Neuroepithelial bodies (NEB) and solitary endocrine cells in the hamster lung. Exp Lung Res. 1982 Nov; 3(3-4):299-311. PMID: 6132812.
    View in: PubMed
  40. McDowell EM, Sorokin SP, Hoyt RF, Trump BF. An unusual bronchial carcinoid tumor: light and electron microscopy. Hum Pathol. 1981 Apr; 12(4):338-48. PMID: 6263786.
    View in: PubMed
  41. Sorokin SP, Hoyt RF, McDowell EM. An unusual bronchial carcinoid tumor analyzed by conjunctive staining. Hum Pathol. 1981 Apr; 12(4):302-13. PMID: 6165668.
    View in: PubMed
  42. Hoyt RF, Tashjian AH. Immunocytochemical analysis of prolactin production by monolayer cultures of GH3 rat anterior pituitary tumor cells: I. Long-term effects of stimulation with thyrotropin-releasing hormone (TRH). Anat Rec. 1980 Jun; 197(2):153-62. PMID: 6774630.
    View in: PubMed
  43. Hoyt RF, Sorokin SP, Bartlett RA. A simple fluorescence method for serotonin-containing endocrine cells in plastic-embedded lung, gut and thyroid gland. J Histochem Cytochem. 1979 Mar; 27(3):721-7. PMID: 479551.
    View in: PubMed
  44. Sorokin SP, Hoyt RF. PAS-lead hematoxylin as a stain for small-granule endocrine cell populations in the lungs, other pharyngeal derivatives and the gut. Anat Rec. 1978 Oct; 192(2):245-59. PMID: 82411.
    View in: PubMed
  45. Hoyt RF, Tashjian AH, Hamilton DW. Distribution of thyroid, parathyroid, and ultimobranchial hypocalcemic factors in birds. 1. Thyroid and ultimobranchial calcitonins in pigeons and pullets. Endocrinology. 1972 Sep; 91(3):770-83. PMID: 5041207.
    View in: PubMed
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