Evidence map›Paper›PMID 12500898›Full record

ArticleJournal of muscle research and cell motility2002

Contractile properties and myosin heavy chain isoform composition in single fibre of human laryngeal muscles.

Giuseppe D'Antona, Aram Megighian, Susan Bortolotto, Maria Antonietta Pellegrino, Rosario Marchese-Ragona, Alberto Staffieri, Roberto Bottinelli, Carlo Reggiani

Abstract read
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In one paragraph

Article in Journal of muscle research and cell motility, 2002. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
1.7field-weighted citation impact, top 17% of its field
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

22 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Review
  3. Article
  4. Morphometric and Immunohistochemical Characteristics of the Adult Human Soft Palate Muscles.The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society · 2022
    Article
  5. Article
  6. Article
  7. Mechanical properties of respiratory muscles.Comprehensive Physiology · 2013
    Review
  8. Article
  9. Article
  10. Myosin heavy chain composition of the human genioglossus muscle.Journal of speech, language, and hearing research : JSLHR · 2012
    Article
  11. Human skeletal muscle: transition between fast and slow fibre types.Pflugers Archiv : European journal of physiology · 2011
    Article
  12. Article
  13. Article
  14. Immunohistochemical analysis of laryngeal muscles in normal horses and horses with subclinical recurrent laryngeal neuropathy.The journal of histochemistry and cytochemistry : official journal of the Histochemistry Society · 2009
    Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Anatomy and fiber type composition of human interarytenoid muscle.The Annals of otology, rhinology, and laryngology · 2004
    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

8 authors at 3 institutions in 1 country.

Giuseppe D'AntonaInstitute of Human Physiology, University of Pavia, via Forlanini 6, 27100 Pavia, Italy. gdantona@unipv.it
Aram Megighian
Susan Bortolotto
Maria Antonietta Pellegrino
Rosario Marchese-Ragona
Alberto Staffieri
Roberto Bottinelli
Carlo Reggiani
University of Padua · ITUniversity of Pavia · ITIstituti Clinici Scientifici Maugeri · IT

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In the present study we aimed to determine the functional properties and the myosin heavy chain (MHC) isoform composition of single chemically skinned fibres from the vocal muscle of four adult men (age: 55-67 years). Single fibres, dissected from the bioptic samples, were chemically skinned and isometric tension (P0) and maximal shortening velocity (V0) were measured at pCa 4.6. MHC and myosin light chain (MLC) composition of fibre segments and MHC distribution of the biopsy samples were analysed by SDS-poly-acrylamide gel electrophoresis (SDS-PAGE) and densitometry. Four MHC isoforms (1, 2A, 2X and a fourth isoform, provisionally called L) and five MLC isoforms (MLC1s, MLC1f, MLC3f, MLC2f, MLC2s) were identified. The major findings of this study were: (1) fast MHC isoforms (in particular MHC-2A) and fast fibres were predominant, (2) one-third of the fibres were mixed or hybrid, i.e. expressed more than one MHC isoform, (3) V0 and P0 values were determined by the MHC isoform composition and mixed fibres showed functional properties which were intermediate between pure fibres; MHC-L was associated with V0 values similar to those of MHC-2A, (4) compared with limb muscles, V0 values of laryngeal fibres were similar to those of limb muscle fibres containing the same MHC isoform whereas P0 values were lower for slow and fast 2X fibres and similar for fibres expressing MHC-2A.

Indexed as

AgedElectrophoresis, Polyacrylamide GelExtremitiesHumansLaryngeal MusclesMaleMiddle AgedMuscle ContractionMuscle Fibers, Fast-TwitchMuscle Fibers, SkeletalMyosin Heavy ChainsMyosin Light ChainsProtein IsoformsMyosin Heavy ChainsMyosin Light ChainsProtein Isoforms

Identifiers

PMID12500898
OpenAlexW319698068

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

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.