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Immunohistochemical characterization of human masseter muscle spindles.
Muscle Nerve. 1994 Jan; 17(1):31-41.MN

Abstract

An enzyme- and immunohistochemical study has been performed on human masseter muscle spindles. Antibodies selective for different myosin heavy chain (MHC) isoforms and M-band proteins (M-protein, myomesin, and MM-CK) were used. The expression of these proteins was determined in the different intrafusal fiber types. Nuclear bag1 and nuclear bag2 fibers expressed predominantly slow-twitch and slow-tonic MHCs. The bag2 fibers in addition contained fetal MHC. Nuclear chain fibers coexpressed embryonic, fetal, and fast-twitch MHCs. The bag2 and chain fibers contained all three M-band proteins, whereas the bag1 fibers contained only myomesin. In general the MHC expression in the human masseter intrafusal fiber types was similar to that previously reported for limb muscles in man as well as for limb and masseter muscles in other species. However, the number of intrafusal fibers per spindle was unusually high (up to 36). This reinforces the idea that masseter muscle spindles have a strong proprioceptive impact during the control of jaw movements.

Authors+Show Affiliations

Department of Clinical Oral Physiology, University of Umeå, Sweden.No affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

8264700

Citation

Eriksson, P O., et al. "Immunohistochemical Characterization of Human Masseter Muscle Spindles." Muscle & Nerve, vol. 17, no. 1, 1994, pp. 31-41.
Eriksson PO, Butler-Browne GS, Thornell LE. Immunohistochemical characterization of human masseter muscle spindles. Muscle Nerve. 1994;17(1):31-41.
Eriksson, P. O., Butler-Browne, G. S., & Thornell, L. E. (1994). Immunohistochemical characterization of human masseter muscle spindles. Muscle & Nerve, 17(1), 31-41.
Eriksson PO, Butler-Browne GS, Thornell LE. Immunohistochemical Characterization of Human Masseter Muscle Spindles. Muscle Nerve. 1994;17(1):31-41. PubMed PMID: 8264700.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Immunohistochemical characterization of human masseter muscle spindles. AU - Eriksson,P O, AU - Butler-Browne,G S, AU - Thornell,L E, PY - 1994/1/1/pubmed PY - 1994/1/1/medline PY - 1994/1/1/entrez SP - 31 EP - 41 JF - Muscle & nerve JO - Muscle Nerve VL - 17 IS - 1 N2 - An enzyme- and immunohistochemical study has been performed on human masseter muscle spindles. Antibodies selective for different myosin heavy chain (MHC) isoforms and M-band proteins (M-protein, myomesin, and MM-CK) were used. The expression of these proteins was determined in the different intrafusal fiber types. Nuclear bag1 and nuclear bag2 fibers expressed predominantly slow-twitch and slow-tonic MHCs. The bag2 fibers in addition contained fetal MHC. Nuclear chain fibers coexpressed embryonic, fetal, and fast-twitch MHCs. The bag2 and chain fibers contained all three M-band proteins, whereas the bag1 fibers contained only myomesin. In general the MHC expression in the human masseter intrafusal fiber types was similar to that previously reported for limb muscles in man as well as for limb and masseter muscles in other species. However, the number of intrafusal fibers per spindle was unusually high (up to 36). This reinforces the idea that masseter muscle spindles have a strong proprioceptive impact during the control of jaw movements. SN - 0148-639X UR - https://www.unboundmedicine.com/medline/citation/8264700/Immunohistochemical_characterization_of_human_masseter_muscle_spindles_ L2 - https://doi.org/10.1002/mus.880170105 DB - PRIME DP - Unbound Medicine ER -