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Prevalence and Anatomical Evidence of Treponemal Infection in the Cobb Collection

Undergraduate #31
Discipline: Biological Sciences
Subcategory: Physiology and Health

Nicholas Guthrie - Howard University


Understanding the health of our ancestors can give us a viewpoint to understand present-day health conditions. The relationship of African American (AA) ancestry to infectious disease status has not been extensively studied. This study aims to characterize AA health by osteologically investigating the microbial effects of Treponema palladium (TP) bacteria on AAs who died in the greater DC metropolitan area from 1930 to 1969. The gram-negative, spiral shaped bacteria has four pathogenic subspecies; pallidum, pertenue, endemicum, and carateum, causing syphilis, yaws, endemic syphilis, and pinta, respectively. To confirm TP infection, we will use the Cobb Collection autopsy and clinical records in conjunction with scientific methods of microscopic analysis, microbial analysis, and various imaging techniques. DNA extracted from the Cobb Collection individuals will be analyzed for traces of TP genetic material, using PCR, to confirm the diagnosis. Furthermore, the screening process will be expanded to Cobb Collection individuals who show some visual markers of the infection. Our expected results will yield better understanding of the pathology of TP and its contribution to AA morbidity and mortality during the era of overt racial segregation to the present day.

Funder Acknowledgement(s): HU-LSAMP

Faculty Advisor: Fatimah LC Jackson,

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This material is based upon work supported by the National Science Foundation (NSF) under Grant No. DUE-1930047. Any opinions, findings, interpretations, conclusions or recommendations expressed in this material are those of its authors and do not represent the views of the AAAS Board of Directors, the Council of AAAS, AAAS’ membership or the National Science Foundation.

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