Evidence map›Paper›PMID 40690900›Full record

Observational studyThe Journal of clinical endocrinology and metabolism2026

Parathyroidectomy Restores Muscle Strength and Transcriptome in Individuals With Primary Hyperparathyroidism.

Sofia Björnsdotter-Öberg, Anna Koman, Mikael Skorpil, Henric Rydén, Johanna T Lanner, Anna Krook, Inga-Lena Nilsson, Nicolas J Pillon, Carolina Nylén

Abstract readObservational Study
In one paragraph

Observational study in The Journal of clinical endocrinology and metabolism, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

4 citing papers in PubMed.

  1. Article
  2. Review
  3. Review
  4. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

9 authors.

Sofia Björnsdotter-ÖbergDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm SE-171 76, Sweden.
Anna KomanDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm SE-171 76, Sweden.ORCID 0000-0003-3196-7057
Mikael SkorpilDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm SE-171 76, Sweden.
Henric RydénDepartment of Neuroradiology, Karolinska University Hospital, Stockholm SE 171 76, Sweden.
Johanna T LannerDepartment of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, Stockholm 171 77, Sweden.
Anna KrookDepartment of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, Stockholm 171 77, Sweden.
Inga-Lena NilssonDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm SE-171 76, Sweden.
Nicolas J PillonDepartment of Physiology and Pharmacology, Biomedicum, Karolinska Institutet, Stockholm 171 77, Sweden.
Carolina NylénDepartment of Molecular Medicine and Surgery, Karolinska Institutet, Stockholm SE-171 76, Sweden.ORCID 0000-0002-8445-7221

Funding

Diabetes Wellness Network Sverige PG21-6524European Foundation for the Study of Diabetes NNF/EFSD NNF21SA0072747Lisa- and Johan Grönberg foundation 2024-010Novo Nordisk Foundation NNF24OC0088739Swedish Research Council 2022-00609Swedish Research Council 2022-01650Swedish Society of Medicine SLS-986646
6 · The paper itself

Abstract

contextPrimary hyperparathyroidism leads to hypercalcemia and muscle dysfunction. Muscle weakness is associated with increased morbidity and mortality but is overlooked in surgical treatment guidelines. While parathyroidectomy is the only curative treatment, its effects on skeletal muscle strength and molecular remodeling remain underexplored.

objectiveDetermining functional and molecular changes in skeletal muscle before and after parathyroidectomy.

methodsA prospective observational study was conducted in the spring and fall of 2023. Patients underwent surgery at the Endocrine and Sarcoma unit at the Karolinska University Hospital in Stockholm, Sweden. A total of 21 postmenopausal women with primary hyperparathyroidism planned for surgery were included, whereof 15 completed the study protocol. Participants had no disabling comorbidities. Muscle function tests, muscle biopsies, MRI, and biochemical panels were analyzed before and after parathyroidectomy. Muscle composition of m. vastus lateralis was tested with MRI and transcriptomic analysis of muscle biopsies. Leg strength was evaluated with timed stands test and peak torque tests. Activity level was estimated from questionnaires.

resultsParathyroidectomy normalized calcium levels (P < .001) and improved muscle strength (P < .005). Muscle volume increased (P = .023) and fat fraction was reduced (P = .013), without changes in physical activity levels. Transcriptomic analysis identified 981 differentially expressed genes postsurgery, enriched in pathways mirroring exercise-induced adaptations.

conclusionThese findings highlight the impact of parathyroidectomy on skeletal muscle function and suggest that muscle assessments should be included in surgical referral criteria to address age-related muscle decline and improve long-term outcomes.

Indexed as

Hyperparathyroidism, PrimaryMuscle StrengthParathyroidectomyTranscriptomeAgedFemaleHumansMagnetic Resonance ImagingMiddle AgedMuscle, SkeletalMuscle WeaknessProspective Studiesmuscle strengthparathyroidectomyprimary hyperparathyroidism

Identifiers

PMID40690900
PMCPMC12819853

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Registered trials

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.