Abstract

I have continued working to locate mutations in the TGF-alpha pase, which has previously been associated with nonsyndromic cleft lip with or without cleft palate (NSCL+/-CP). We have identified two polymorphisms that are in the 3' untranslated region of the TGF- alpha mRNA. These do not have any apparent biological significance. One of the polymorphisms has been shown to not be associated with NSCL+/-CP, while the other one is still being characterized as to the frequency of the four alleles found in both the case and control population. Work is being continued to locate other polymorphisms by using PCL amplification of TGF-alpha gene fragments and /m/cg for mobility shifts using two techniques that are sensitive to single base-pair changes. These are the single strand information polymorphism technique and the denaturing gradient gel electrophoresis technique. In addition, sequencing of MRNA form patients with various clefts is being done to look for sequence changes.

  Funding Agency

Agency
National Institute of Health (NIH)
Institute
National Institute of Dental & Craniofacial Research (NIDCR)
Type
Unknown (K16)
Project #
5K16DE000175-08
Application #
3839150
Study Section
Project Start
Project End
Budget Start
Budget End
Support Year
8
Fiscal Year
1992
Total Cost
Indirect Cost

  Institution

Name
University of Iowa
Department
Type
DUNS #
041294109
City
Iowa City
State
IA
Country
United States
Zip Code
52242

  Publications

Perinpanayagam, H; Schneider, G; Holtman, K et al. (2004) Altered Cbfa1 expression and biomineralization in an osteosarcoma cell line. J Orthop Res 22:404-10
Armstrong, Steven R; Vargas, M A; Chung, I et al. (2004) Resin-dentin interfacial ultrastructure and microtensile dentin bond strength after five-year water storage. Oper Dent 29:705-12
Timmons, Sherry R; Nwankwo, Joseph O; Domann, Frederick E (2002) Acetaldehyde activates Jun/AP-1 expression and DNA binding activity in human oral keratinocytes. Oral Oncol 38:281-90
Armstrong, S R; Keller, J C; Boyer, D B (2001) The influence of water storage and C-factor on the dentin-resin composite microtensile bond strength and debond pathway utilizing a filled and unfilled adhesive resin. Dent Mater 17:268-76
Armstrong, S R; Keller, J C; Boyer, D B (2001) Mode of failure in the dentin-adhesive resin-resin composite bonded joint as determined by strength-based (muTBS) and fracture-based (CNSB) mechanical testing. Dent Mater 17:201-10
Armstrong, S R; Boyer, D B; Keller, J C (1998) Microtensile bond strength testing and failure analysis of two dentin adhesives. Dent Mater 14:44-50
Kurago, Z B; Lutz, C T; Smith, K D et al. (1998) NK cell natural cytotoxicity and IFN-gamma production are not always coordinately regulated: engagement of DX9 KIR+ NK cells by HLA-B7 variants and target cells. J Immunol 160:1573-80
Armstrong, S R; Boyer, D B; Keller, J C et al. (1998) Effect of hybrid layer on fracture toughness of adhesively bonded dentin-resin composite joint. Dent Mater 14:91-8
Baumgardner, K R; Walton, R E; Osborne, J W et al. (1996) Induced hypoxia in rat pulp and periapex demonstrated by 3H-misonidazole retention. J Dent Res 75:1753-60
Kurago, Z B; Smith, K D; Lutz, C T (1995) NK cell recognition of MHC class I. NK cells are sensitive to peptide-binding groove and surface alpha-helical mutations that affect T cells. J Immunol 154:2631-41

Showing the most recent 10 out of 12 publications