Postnatal development of semitendinosus muscle in the dog

Latorre, R.; F, Gil; Ramı́rez, G.A.; Vázquez, Javier Velasco; López-Albors, O.; Moreno, Francisco J. Magraner

doi:10.1007/bf00185949

Cited by 2 publications

(3 citation statements)

References 20 publications

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“…In this study, the predominant fiber type was the fast twitch oxidative IIA fibers, followed by Type I and IIX. This finding was evident in both the TB and VL muscle groups and is supported by previous research on dogs, which included muscle groups such as the semitendinosus , longissimus dorsi , gluteus medius , biceps femoris , TB, and VL (Acevedo & Rivero, 2006; Braga et al, 2016; Braund et al, 1982; Guy & Snow, 1981; Latorre et al, 1993; McKenzie et al, 2005; Strbenc et al, 2004; Toniolo et al, 2007). Acevedo and Rivero (2006) found that dog muscle fibers expressing MHC IIX were only found in the latissimus dorsi , gluteus medius , and semitendinosus (averaging 8% of the muscle fibers).…”

Section: Discussionsupporting

confidence: 80%

“…Over the past 50 years, a handful of studies have been published that investigated the muscle composition and metabolic characteristics of dogs, each with varying research questions and results (Acevedo & Rivero, 2006; Braga et al, 2016; Braund et al, 1982; Gunn, 1978; Guy & Snow, 1981; Kuzon et al, 1989; Latorre et al, 1993; McKenzie et al, 2005; Snow et al, 1982; Strbenc et al, 2004; Toniolo et al, 2007). Overall, the muscle of dogs seem to harbor a prevalence of Type I and IIA fibers with a higher oxidative capacity compared to glycolytic capacity.…”

Section: Introductionmentioning

confidence: 99%

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Fiber type and metabolic characteristics of skeletal muscle in 16 breeds of domestic dogs

Boom

Schoeman

Steyl

et al. 2023

The Anatomical Record

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The domestic dog (Canis lupus familiaris) species comprises hundreds of breeds, each differing in physical characteristics, behavior, strength, and running capability. Very little is known about the skeletal muscle composition and metabolism between the different breeds, which may explain disease susceptibility. Muscle samples from the triceps brachii (TB) and vastus lateralis (VL) were collected post mortem from 35 adult dogs, encompassing 16 breeds of varying ages and sex. Samples were analyzed for fiber type composition, fiber size, oxidative, and glycolytic metabolic capacity (citrate synthase [CS], 3‐hydroxyacetyl‐coA dehydrogenase [3HAD], creatine kinase [CK], and lactate dehydrogenase [LDH] enzyme activities). There was no significant difference between the TB and VL in any of the measurements. However, there were large intra species variation, with some variables confirming the physical attributes of a specific breed. Collectively, type IIA was the predominant fiber type followed by type I and type IIX. The cross‐sectional areas (CSA) of the fibers were all smaller when compared to humans and similar to other wild animals. There was no difference in the CSA between the fiber types and muscle groups. Metabolically, the muscle of the dog displayed high oxidative capacity with high activities for CS and 3HAD. Lower CK and higher LDH activities than humans indicate a lower and higher flux through the high energy phosphate and glycolytic pathways, respectively. The high variability found across the different breeds may be attributed to genetics, function or lifestyle which have largely been driven through human intervention. This data may provide a foundation for future research into the role of these parameters in disease susceptibility, such as insulin resistance and diabetes, across breeds.

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Section: Discussionsupporting

confidence: 80%

Section: Introductionmentioning

confidence: 99%

Fiber type and metabolic characteristics of skeletal muscle in 16 breeds of domestic dogs

Boom

Schoeman

Steyl

et al. 2023

The Anatomical Record

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“…After a few weeks of age they differentiated into other types known in adult animals, i.e. I, IIA and IIDog (Braund & Lincoln, 1981; Latorre et al. 1993b).…”

Section: Introductionmentioning

confidence: 99%

Myosin heavy chain isoform transitions in canine skeletal muscles during postnatal growth

Štrbenc¹,

Smerdu

Pogačnik³

et al. 2006

Journal of Anatomy

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To gain a better understanding of the normal characteristics of developing canine muscles, myosin heavy chain (MHC) isoform expression was analysed in the axial and limb skeletal muscles of 18 young dogs whose ages ranged from the late prenatal stage to 6 months. We compared the results of immunohistochemistry using ten monoclonal antibodies, specific to different MHC isoforms, and enzyme-histochemical reactions, which demonstrate the activity of myofibrillar ATPase, succinate dehydrogenase (SDH) and α -glycerophosphate dehydrogenase ( α -GPDH). In the skeletal muscles of fetuses and neonatal dogs the developmental isoforms MHC-emb and MHC-neo were prevalent.In all muscles the primary fibres, located centrally in each muscle fascicle, strongly expressed the slow isoform MHC-I.The adult fast isoform MHC-IIa was first noted in some of the secondary fibres on fetal day 55. During the first 10 days after birth, the expression of MHC-emb declined, as did that of MHC-neo during the second and third weeks. Correspondingly, the expression of MHC-IIa, and later, of MHC-I increased in the secondary fibres. Between the sixth week and second month the expression of MHC-IIx became prominent. The slow rhomboideus muscle exhibited an early expression of the slow isoform in the secondary fibres. Our results indicate that the timing of muscle maturation depends on its activity immediately following birth. The fastest developing muscle was the diaphragm, followed by the fast muscles. A pronounced changeover from developmental to adult isoforms was noted at 4 -6 weeks of age, which coincides with the increased physical activity of puppies.

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Postnatal development of semitendinosus muscle in the dog

Cited by 2 publications

References 20 publications

Fiber type and metabolic characteristics of skeletal muscle in 16 breeds of domestic dogs

Fiber type and metabolic characteristics of skeletal muscle in 16 breeds of domestic dogs

Myosin heavy chain isoform transitions in canine skeletal muscles during postnatal growth

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