title: Design of a biological method for rapid detection of presence of PCR inhibitors in aged bone DNA.
abstract: BACKGROUND
  Molecular human identification is one of the most important tests performed in forensic laboratories. Some of these tests are applied for identification of human remains from natural disasters, wars, etc., but problems may occur as a result of DNA degradation and external DNA contamination. We investigated effects of bacterial DNA on identifying the presence or absence of PCR inhibitors in aged bone DNA.
  
  
  METHODS
  DNA samples were extracted from blood, bone remains and Escherichia coli. These DNA were amplified using human and bacterial specific primers.
  
  
  RESULTS
  Using different blood, aged bone, and bacterial DNA dilutions along with PCR based methods; we checked their positive, negative effects, or detecting presence of inhibitors in aged bone DNA by PCR method.
  
  
  CONCLUSIONS
  Our observation indicated that the addition of bacterial DNA could be a valid biological method for testing the quality of bone DNA to enable us to obtain a usable profile for the identification of human remains. This method will help to test the presence of inhibitors, quantity or even quality of DNA which are of importance in profiling archeological remains. Our method will help to determine if PCR failure is due to presence of inhibitors or lack of amplifiable DNA either because of degradation, minute amount or absence of human DNA.
authors.affiliation: Human Genetics Research Center, Baqyatallah University of Medical Sciences, Tehran, Iran.
authors.forename: Akram
authors.initials: A
authors.lastname: Ghasemi
authors.forename: Nejat
authors.initials: N
authors.lastname: Mahdieh
authors.forename: Mahmood
authors.initials: M
authors.lastname: Tavallaei
authors.forename: Mohammad Mehdi
authors.initials: MM
authors.lastname: Aslani
authors.forename: Zahra
authors.initials: Z
authors.lastname: Zafari
authors.forename: Atefeh
authors.initials: A
authors.lastname: Shirkavand
authors.forename: Maryam Sharafi
authors.initials: MS
authors.lastname: Farzad
authors.forename: Mahdi
authors.initials: M
authors.lastname: Naderi
authors.forename: Sajjad Habibi
authors.initials: SH
authors.lastname: Azariyan
authors.forename: Sirous
authors.initials: S
authors.lastname: Zeinali
mesh_terms: D001483:Base Sequence; D001842:Bone and Bones / Q000378:metabolism*; D004247:DNA / Q000235:genetics*; D017931:DNA Primers; D018732:Forensic Anthropology; D006801:Humans; D016133:Polymerase Chain Reaction / Q000379:methods*
chemical_list: D017931:DNA Primers; D004247:DNA