Relationship between loneliness and proangiogenic cytokines in newly diagnosed tumors of colon and rectum

Bina Nausheen, Norman J. Carr, Robert C. Peveler, Rona Moss-Morris, Clare Verrill, Elizabeth Robbins, Karen P. Nugent, Alex M. Baker, Mary Judd, Yori Gidron

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: To investigate the association of serum levels of proangiogenic cytokines with different indices of social support and loneliness by measuring the levels of expression of two important proangiogenic cytokines, vascular endothelial growth factor (VEGF), and interleukin-6 in tumors of colon and rectum. Lack of social support has been prospectively associated with cancer progression. Methods: Fifty-one newly diagnosed patients with colorectal tumors (mean age, 68.3 years) completed two measures of loneliness 1 to 2 days before their surgical treatment. The first was an explicit self-report questionnaire, which tapped into negative feelings as a result of low social support. The second was a standardized computer-based task, which measured loneliness implicitly. Immunohistochemical analyses were performed on tumor tissues post surgery to determine the expression of cytokines. Results: Logistic regression showed that higher levels of implicit loneliness independently predicted stronger expression of VEGF, controlling for Dukes stage and explicit loneliness, both of which were nonsignificant predictors. No significant relationships were found between the loneliness measures and interleukin-6. Conclusions: The results of this study suggest VEGF to be an angiogenic mechanism through which loneliness may lead to worse cancer-related outcomes. Implications are discussed in terms of devising targeted psychosocial and immunotherapeutic interventions for cancer patients with low social support.

Original languageEnglish
Pages (from-to)912-916
Number of pages5
JournalPsychosomatic Medicine
Volume72
Issue number9
DOIs
StatePublished - Nov 2010
Externally publishedYes

Keywords

  • Interleukin-6
  • Loneliness
  • Social support
  • Tumor
  • Vascular endothelial growth factor

ASJC Scopus subject areas

  • Psychiatry and Mental health
  • Applied Psychology

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