title: [Significance of serum calcium levels in colorectal cancer].
abstract: BACKGROUND
  Based on the available studies, a link can be established between colorectal cancer (CRC) and low intake of calcium and vitamin D. According to the most recent results, the serum calcium level is mainly determined by genetic factors. One of the key elements of this is calcium-sensing receptor.
  
  
  OBJECTIVE
  The authors of this article examined patients in which CRC had recently been discovered. Particular attention was devoted to the relationship between the calcium metabolism of the patients, and the levels of AFP, CEA, CA 19-9 (which can be considered as prognostic factors).
  
  
  METHODS
  The authors examined a total of 70 patients. Furthermore they examined the calcium-sensing receptor (CaSR) A986S polymorphism, as well as the different CaSR genotypes and the relationship with the data stated above.
  
  
  RESULTS
  A lower level of ionized calcium was found in the CRC patients with normal 25 (OH) vitamin D levels. Beyond this, the ionized calcium level was inversely correlated with the level of CA 19-9 tumor markers. There were no differences in the CaSR genotype, between the CRC patients and the general population, beyond this, the genotypes did not correlate with other data being examined.
  
  
  CONCLUSIONS
  With these results, the authors of this article have concluded that a lower level of calcium can be a pathogenic and prognostic factor in colorectal cancer.
authors.affiliation: Semmelweis Egyetem, Altalános Orvostudományi Kar, I. Belgyógyászati Klinika, Budapest. fuszpet@bel1.sote.hu
authors.forename: Péter
authors.initials: P
authors.lastname: Fuszek
authors.forename: Péter
authors.initials: P
authors.lastname: Lakatos
authors.forename: Adám
authors.initials: A
authors.lastname: Tabák
authors.forename: János
authors.initials: J
authors.lastname: Papp
authors.forename: Zsolt
authors.initials: Z
authors.lastname: Nagy
authors.forename: Péter László
authors.initials: PL
authors.lastname: Lakatos
authors.forename: Gábor
authors.initials: G
authors.lastname: Speer
mesh_terms: D000368:Aged; D000409:Alanine; D014408:Biomarkers, Tumor / Q000097:blood* / Q000378:metabolism; D018395:CA-19-9 Antigen / Q000097:blood; D002118:Calcium / Q000097:blood*; D015179:Colorectal Neoplasms / Q000097:blood* / Q000378:metabolism; D005260:Female; D005838:Genotype; D006801:Humans; D008297:Male; D008875:Middle Aged; D011110:Polymorphism, Genetic; D011237:Predictive Value of Tests; D011379:Prognosis; D044169:Receptors, Calcium-Sensing / Q000235:genetics*; D012307:Risk Factors; D012694:Serine
chemical_list: D014408:Biomarkers, Tumor; D018395:CA-19-9 Antigen; D044169:Receptors, Calcium-Sensing; D012694:Serine; D000409:Alanine; D002118:Calcium
vernacular_title: A szérumkalciumszint jelentosége colorectalis daganatos betegekben.