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Journal of Environmental Pathology, Toxicology and Oncology
IF: 1.241 5-Year IF: 1.349 SJR: 0.519 SNIP: 0.613 CiteScore™: 1.61

ISSN Print: 0731-8898
ISSN Online: 2162-6537

Journal of Environmental Pathology, Toxicology and Oncology

DOI: 10.1615/JEnvironPatholToxicolOncol.2014011761
pages 339-347

Hsp70 Is an Independent Stress Marker Among Frequent Users of Mobile Phones

Karuppiah Balakrishnan
Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
Vijayan Murali
Department of Biotechnology & Genetic Engineering, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
Chinniah Rathika
Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
Thirunavukkarasu Manikandan
Department of Biotechnology & Genetic Engineering, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India
Ravi Padma Malini
Department of Immunology, School of Biological Sciences, Madurai Kamaraj University, Madurai, Tamil Nadu, India
Ramanathan Aravind Selvin Kumar
Department of Pediatric Nephrology, Institute of Child Health & amp; Hospital for Children, Dr. M. G. R. Medical University, Chennai, Tamil Nadu, India
Muthukalingan Krishnan
Department of Environmental Biotechnology, Bharathidasan University, Tiruchirappalli, Tamil Nadu, India

ABSTRACT

The aim of this study was to measure the serum concentrations of heat shock protein (HSP) 70 and C-reactive protein (CRP) and the expression levels of the hsp70 gene among frequent users of mobile phones (FUMPs). We enrolled 120 employees of information technology (IT)/IT enabled service companies (FUMPs; IT professionals) and 102 infrequent users of mobile phones (IFUMPs; people from non-IT professions) as controls. The serum concentrations of HSP70 and CRP were measured by enzyme-linked immunosorbant assay and hsp70 gene expression by reverse transcription polymerase chain reaction. Significantly higher concentrations of serum HSP70 (P < 0.00012) and CRP (P < 0.04) were observed among FUMPs than IFUMPs. A higher level of hsp70 gene expression (fold induction) was observed among FUMPs than IFUMPs (P < 7.06 × 10−13). In contrast to the duration of exposure-dependent increase of serum concentration of CRP, the serum HSP70 concentration was found to be independent of the duration of exposure to mobile phones. Thus, the study convincingly demonstrated the role of serum HSP and CRP as systemic inflammatory biomarkers for mobile phone-induced radiation.


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