Citation

Kakizaki E, Kozawa S, Matsuda H, Muraoka E, Uchiyama T, Sakai M, Yukawa N. Forensic Sci. Int. 2011; 204(1-3): 80-87.

Affiliation

Section of Legal Medicine, Department of Social Medicine, Faculty of Medicine (Miyazaki Medical College), University of Miyazaki, 5200 Kihara, Kiyotake-cho, Miyazaki 889-1692, Japan.

Copyright

(Copyright © 2011, Elsevier Publishing)

DOI

10.1016/j.forsciint.2010.05.006

PMID

20554407

Abstract

Numbers and types of bacterioplankton proliferating in blood samples mixed with water of various salinity levels were examined to determine the characteristics of species associated with salinity. Water samples (total n=88) were collected from the midstream of two rivers (freshwater; n=10; salinity <0.05%), from around their estuaries (areas of freshwater, n=20, salinity <0.05%; areas of brackish water, n=20, salinity <0.05-3.1%; areas of marine water beyond the mouths of the rivers, n=28, salinity 2.4-3.3%), and from the coast (areas of marine water; n=10; salinity 3.3-3.5%). Freshwater bacteria were identified in 41 of 42 blood samples mixed with water at /=1.8% salinity, and most comprised the genera Vibrio and Photobacterium that are universally distributed in seawater environments. Aeromonas was undetectable in all blood samples mixed with brackish or sea water at >/=1.8% salinity although they are detectable even in seawater environments. Thus, the present results showed that bacterioplankton capable of proliferating in human blood reflects the salinity of water.

Language: en