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Novel and Differential Accumulation of Mitochondrial DNA Deletions in Swedish and Vietnamese Patients with Colorectal Cancer

Dimberg, Jan, (författare)
Högskolan i Jönköping, HHJ, Avd. för naturvetenskap och biomedicin, Högskolan i Jönköping, HHJ. Biomedicinsk plattform
Thai, Trinh Hong, (författare)
Vietnam National University
Skarstedt, Marita, (författare)
Ryhov County Hospital, Jönköping
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Löfgren, Sture, (författare)
Ryhov County Hospital, Jönköping
Zar, Niklas, (författare)
Ryhov County Hospital, Jönköping
Matussek, Andreas, (författare)
Ryhov County Hospital, Jönköping
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2014
Engelska.
Ingår i: Anticancer Research. - 0250-7005 .- 1791-7530. ; 34:1, s. 147-152
  • Tidskriftsartikel (refereegranskat)
Abstract Ämnesord
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  • <p>Background: Mitochondrial DNA (mtDNA) has been proposed to be involved in carcinogenesis and aging. The mtDNA 4977 bp deletion is one of the most frequently observed mtDNA mutations in human tissues and may play a role in colorectal cancer (CRC). In the present study, we aimed to evaluate the frequency of mtDNA 4977 bp deletion in CRC tissues and its association with clinical factors. Patients and Methods: We determined the presence of the 4977 bp common deletion in cancer and normal paired tissue samples from 105 Swedish and 88 Vietnamese patients with CRC using polymerase chain reaction (PCR) assays. Results: The mtDNA 4977 bp deletion was shown to be significantly more frequent in normal tissues in comparison with paired cancer tissues in both Swedish and Vietnamese patients. The 4977 bp common deletion was significantly more frequent in cancer tissues of the Vietnamese patients compared to the Swedish patients, and in Vietnamese cancer tissues, the 4977 bp deletion was significantly over represented in those with localized disease compared to those with disseminated disease. Moreover, we detected nine novel mtDNA deletions and found a significantly higher rate of these in CRC tissues in Swedish in comparison to Vietnamese patients. Conclusion: The mtDNA 4977 bp deletion seems to have an impact on the clinical outcome of CRC in Vietnamese patients, that the Swedish patients accumulate more of the detected novel deletions in CRC tissue compared to Vietnamese patients probably indicates divergent mechanisms in colorectal carcinogenesis.</p>

Ämnesord

MEDICIN OCH HÄLSOVETENSKAP  -- Klinisk medicin -- Cancer och onkologi (hsv//swe)
MEDICAL AND HEALTH SCIENCES  -- Clinical Medicine -- Cancer and Oncology (hsv//eng)

Nyckelord

Colorectal cancer; mitochondrial DNA; mtDNA deletion

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