title: Relationship between circulating cytokine levels and thyroid function following bone marrow transplantation.
abstract: The relation between thyroid hormone changes and cytokines in bone marrow transplantation (BMT) patients has not been studied. This prospective study was designed to determine the relation between thyroid hormones and cytokine levels after BMT and their effects on the mortality. We studied 80 patients undergoing allogeneic BMT. Serum thyroid hormone parameters and cytokine levels were measured before and serially during 6 months after BMT. Serum T(3) decreased to a nadir 3 weeks post-BMT and serum T(4) was lowest at 3 months post-BMT. Serum thyroid stimulating hormone (TSH) sharply decreased to a nadir at 1 week and recovered. Serum interleukin-6 increased for 2 weeks after BMT and declined thereafter. Serum tumor necrosis factor-alpha increased for 3 weeks after BMT and declined thereafter. After 3 weeks post-BMT, both cytokine levels were negatively correlated with serum T(3) and T(4) levels. A total of 29 patients died before 1 year post-BMT and 51 patients survived longer than 1 year. Those patients who died before 1 year post-BMT had significantly lower levels of T(4) at 3 weeks, 3 and 6 months than surviving patients. In conclusion, increased levels of serum IL-6 and TNF-alpha were negatively correlated with thyroid hormone concentrations in BMT recipients suggesting the role of these cytokines in euthyroid sick syndrome.
authors.affiliation: Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: W Y
authors.initials: WY
authors.lastname: Lee
authors.forename: M I
authors.initials: MI
authors.lastname: Kang
authors.forename: K W
authors.initials: KW
authors.lastname: Oh
authors.forename: E S
authors.initials: ES
authors.lastname: Oh
authors.forename: K H
authors.initials: KH
authors.lastname: Baek
authors.forename: K W
authors.initials: KW
authors.lastname: Lee
authors.forename: S W
authors.initials: SW
authors.lastname: Kim
authors.forename: D W
authors.initials: DW
authors.lastname: Kim
authors.forename: W S
authors.initials: WS
authors.lastname: Min
authors.forename: C C
authors.initials: CC
authors.lastname: Kim
mesh_terms: D000328:Adult; D015415:Biomarkers / Q000097:blood; D016026:Bone Marrow Transplantation / Q000009:adverse effects / Q000379:methods / Q000401:mortality*; D016207:Cytokines / Q000097:blood*; D005260:Female; D006402:Hematologic Diseases / Q000150:complications / Q000401:mortality / Q000628:therapy; D006801:Humans; D015850:Interleukin-6 / Q000097:blood; D008297:Male; D008875:Middle Aged; D011446:Prospective Studies; D015996:Survival Rate; D013961:Thyroid Gland / Q000502:physiology*; D013963:Thyroid Hormones / Q000097:blood; D014184:Transplantation, Homologous; D014409:Tumor Necrosis Factor-alpha / Q000032:analysis
chemical_list: D015415:Biomarkers; D016207:Cytokines; D015850:Interleukin-6; D013963:Thyroid Hormones; D014409:Tumor Necrosis Factor-alpha