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Serum Adipokines and Metabolic Parameters With Hormone Replacement in Newly Diagnosed Hypothyroidism

27. mai 2026 oppdatert av: Esra Beslendi, Başakşehir Çam & Sakura City Hospital

Hormonal Normalization Is Not Metabolic Recovery: Adipokine Dynamics After Levothyroxine Replacement in Newly Diagnosed Primary Hypothyroidism

Primary hypothyroidism is associated with significant metabolic disturbances, including dyslipidemia, insulin resistance, adipose tissue dysfunction, and altered adipokine secretion. Although levothyroxine replacement therapy effectively restores thyroid hormone levels, the extent to which biochemical recovery reflects metabolic improvement remains unclear.

This prospective observational study aims to evaluate changes in serum adipokine levels, including asprosin, adipolin, omentin-1, and visfatin, together with metabolic parameters in newly diagnosed primary hypothyroid patients before and after 8 weeks of levothyroxine replacement therapy. In addition to conventional biochemical markers, multiple cardiometabolic indices related to insulin resistance, lipid metabolism, and hepatic metabolic burden will be analyzed.

The study is designed to investigate whether normalization of thyroid function is accompanied by parallel metabolic recovery and to explore the potential role of adipokine dynamics in adipose-metabolic remodeling during early levothyroxine treatment.

Studieoversikt

Status

Fullført

Forhold

Detaljert beskrivelse

Hypothyroidism is associated with multiple cardiometabolic abnormalities, including dyslipidemia, insulin resistance, adipose tissue dysfunction, altered energy homeostasis, and chronic low-grade inflammation. Although levothyroxine replacement therapy is effective in restoring thyroid hormone levels, metabolic recovery may not occur simultaneously with biochemical normalization of thyroid function.

Adipokines are biologically active molecules secreted by adipose tissue and play important roles in glucose metabolism, lipid regulation, inflammation, and cardiometabolic risk. Among these adipokines, asprosin, adipolin, omentin-1, and visfatin have been associated with insulin resistance, obesity-related metabolic dysfunction, hepatic metabolism, and inflammatory pathways. However, data regarding the dynamic changes of these adipokines after levothyroxine replacement in newly diagnosed primary hypothyroidism remain limited and inconsistent.

This prospective observational study was designed to evaluate changes in serum adipokine levels and metabolic parameters before and after levothyroxine replacement therapy in newly diagnosed primary hypothyroid patients. Serum samples and metabolic measurements will be obtained before treatment initiation and after 8 weeks of levothyroxine therapy.

In addition to conventional thyroid function tests, multiple metabolic indices associated with insulin resistance, lipid metabolism, hepatosteatosis, and cardiometabolic risk will be analyzed, including HOMA-IR, TyG index, METS-IR, AIP, HSI, and Castelli risk indices.

The primary objective of the study is to evaluate changes in adipokine levels following levothyroxine replacement therapy. Secondary objectives include assessing the relationship between adipokine dynamics and metabolic remodeling, insulin resistance, lipid metabolism, obesity phenotype, and hepatic metabolic burden during early biochemical recovery.

Studietype

Observasjonsmessig

Registrering (Faktiske)

88

Kontakter og plasseringer

Denne delen inneholder kontaktinformasjon for de som utfører studien, og informasjon om hvor denne studien blir utført.

Studiesteder

  • Tyrkia (Türkiye)
      • Istanbul, Tyrkia (Türkiye), 34480
        • University of Health Sciences Basaksehir Cam and Sakura City Hospital

Deltakelseskriterier

Forskere ser etter personer som passer til en bestemt beskrivelse, kalt kvalifikasjonskriterier. Noen eksempler på disse kriteriene er en persons generelle helsetilstand eller tidligere behandlinger.

Kvalifikasjonskriterier

Alder som er kvalifisert for studier

  • Voksen
  • Eldre voksen

Tar imot friske frivillige

Nei

Prøvetakingsmetode

Ikke-sannsynlighetsprøve

Studiepopulasjon

The study population consists of premenopausal female patients aged 18 years or older who were newly diagnosed with primary hypothyroidism at the Internal Medicine outpatient clinic and had not previously received levothyroxine or any other thyroid hormone replacement therapy. Participants were evaluated before treatment initiation and after 8 weeks of standard-of-care levothyroxine replacement therapy. Only patients who completed both baseline and follow-up assessments were included in the final analysis.

Beskrivelse

Inclusion Criteria:

  • Female patients aged 18 years or older
  • Premenopausal status
  • Newly diagnosed primary hypothyroidism, defined by elevated serum TSH level above the reference range with low free T4 level
  • No previous use of levothyroxine or other thyroid hormone replacement therapy
  • Ability and willingness to provide written informed consent
  • Completion of both baseline and 8-week follow-up assessments

Exclusion Criteria:

  • Known hypothalamic or pituitary disease
  • Previous thyroid hormone replacement therapy
  • Pregnancy or lactation
  • Menopause
  • History of thyroid surgery or radioactive iodine therapy
  • Active malignancy
  • Acute or chronic inflammatory disease
  • Severe hepatic or renal disease
  • Diabetes mellitus
  • Use of medications known to significantly affect thyroid function, glucose metabolism, lipid metabolism, or adipokine levels
  • Inability or unwillingness to provide informed consent or comply with follow-up requirements

Studieplan

Denne delen gir detaljer om studieplanen, inkludert hvordan studien er utformet og hva studien måler.

Hvordan er studiet utformet?

Designdetaljer

Kohorter og intervensjoner

Gruppe / Kohort
Newly Diagnosed Primary Hypothyroidism Cohort
Participants in this prospective observational cohort are newly diagnosed primary hypothyroid patients who have not previously received levothyroxine or other thyroid hormone replacement therapy. All participants will receive standard-of-care levothyroxine treatment according to routine clinical practice. Clinical, biochemical, metabolic, and adipokine measurements will be obtained before treatment initiation and after 8 weeks of therapy. Serum adipokines including asprosin, adipolin, omentin-1, and visfatin will be analyzed together with metabolic and cardiometabolic parameters.

Hva måler studien?

Primære resultatmål

Resultatmål
Tiltaksbeskrivelse
Tidsramme
Change in Serum Adipokine Levels After Levothyroxine Replacement Therapy
Tidsramme: Baseline and 8 weeks after levothyroxine replacement therapy
Serum adipokine levels, including asprosin, adipolin, omentin-1, and visfatin, will be measured before treatment initiation and after 8 weeks of standard-of-care levothyroxine replacement therapy in newly diagnosed primary hypothyroid patients. Changes in adipokine concentrations will be evaluated to assess early adipose-metabolic remodeling during biochemical thyroid recovery.
Baseline and 8 weeks after levothyroxine replacement therapy

Samarbeidspartnere og etterforskere

Det er her du vil finne personer og organisasjoner som er involvert i denne studien.

Sponsor

Başakşehir Çam & Sakura City Hospital

Etterforskere

  • Hovedetterforsker: Esra Beslendi, MD, University of Health Sciences, Basaksehir Cam and Sakura City Hospital

Studierekorddatoer

Disse datoene sporer fremdriften for innsending av studieposter og sammendragsresultater til ClinicalTrials.gov. Studieposter og rapporterte resultater gjennomgås av National Library of Medicine (NLM) for å sikre at de oppfyller spesifikke kvalitetskontrollstandarder før de legges ut på det offentlige nettstedet.

Studer hoveddatoer

Studiestart (Faktiske)

10. desember 2025

Primær fullføring (Faktiske)

16. april 2026

Studiet fullført (Faktiske)

16. april 2026

Datoer for studieregistrering

Først innsendt

21. mai 2026

Først innsendt som oppfylte QC-kriteriene

27. mai 2026

Først lagt ut (Faktiske)

1. juni 2026

Oppdateringer av studieposter

Sist oppdatering lagt ut (Faktiske)

1. juni 2026

Siste oppdatering sendt inn som oppfylte QC-kriteriene

27. mai 2026

Sist bekreftet

1. mai 2026

Mer informasjon

Begreper knyttet til denne studien

Nøkkelord

Ytterligere relevante MeSH-vilkår

Andre studie-ID-numre

  • IRB-2026-32

Plan for individuelle deltakerdata (IPD)

Planlegger du å dele individuelle deltakerdata (IPD)?

NEI

IPD-planbeskrivelse

Individual participant data (IPD) are not planned to be shared due to institutional and ethical restrictions related to patient confidentiality and biospecimen-based clinical data.

Legemiddel- og utstyrsinformasjon, studiedokumenter

Studerer et amerikansk FDA-regulert medikamentprodukt

Nei

Studerer et amerikansk FDA-regulert enhetsprodukt

Nei

Denne informasjonen ble hentet direkte fra nettstedet clinicaltrials.gov uten noen endringer. Hvis du har noen forespørsler om å endre, fjerne eller oppdatere studiedetaljene dine, vennligst kontakt register@clinicaltrials.gov. Så snart en endring er implementert på clinicaltrials.gov, vil denne også bli oppdatert automatisk på nettstedet vårt. .

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