Stereometry Study of Septomarginal Trabecula in Equines

Bombonato, Pedro Primo; Agreste, Fernanda Rodrigues; Nogueira, Kaique; Santos, Andressa Cristina Antunes; Vianna, Andr; Lima, Eduardo Maurício Mendes de

doi:10.5455/jva.20150417024416

Cited by 4 publications

(9 citation statements)

References 4 publications

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“…Histological studies have revealed more details regarding their functional correlations (Ravishankar, ). In this study, histological examination of the bovine septomarginal trabecula revealed the presence of the connective tissue, cardiac muscular fibres, blood vessels and Purkinje cells, in agreement with the histological aspect of trabecula in other animal species and in humans (Ateş et al, ; Bombonato et al, ; Ghonimi et al, ; Gulyaeva & Roshchevskaya, ; Sathyamoorthy & Ramesh, ).…”

Section: Discussionsupporting

confidence: 87%

“…These findings can suggest the occurrence of an independent flow of electrical impulses to various portions of the right ventricular wall. This description was also reported in pigs (Gulyaeva & Roshchevskaya, ), horses (Bombonato et al, ), dogs (Bombonato et al, ) and humans (Bandeira et al, ; Kosiński et al, ; Mamatha et al, ).…”

Section: Discussionmentioning

confidence: 52%

“…Bombonato et al () analysed the proportion of tissues that composed the septomarginal trabecula of dogs, demonstrating that the cardiac muscle fibres were predominant, followed by connective tissue, and the conduction tissue was the smallest. This pattern was also emphasized in studies involving horses (Bombonato et al, ; Sathyamoorthy & Ramesh, ) and humans (Ateş et al, ); a similar histological composition pattern was emphasized in the bovine septomarginal trabeculae. On the other hand, in boars, the predominance of cardiac striated muscle tissue remained, but the amount of conduction tissue is higher than that of connective tissue (Bombonato et al, ).…”

Section: Discussionmentioning

confidence: 61%

“…Studies on the location of moderator bands and the distribution of conductive cells in those structures have been conducted in humans (Bandeira et al, ; Chaudhary, Bharti, & Deshpande, ; Kosiński et al, ; Mamatha, Shenoy, D´Souza, Prasana, Sumalatha, Shenoy, D´Souza, Prasanna, & Sumalatha, ; Rocha et al, ; Shenoy, Lucas, Vinay, & Ramos, ) and several animal species, including goats (Leão et al, ), sheeps (Ansari, Ho, & Anderson, ), pigs (Bojsen‐Moller & Tranum‐Jensen, ; Gulyaeva & Roshchevskaya, ), dogs (Bombonato et al, ), equines (Bombonato et al, ; Sathyamoorthy & Ramesh, ), buffalos (Ghonimi et al, ) and ostriches (Parto, Tadjalli, & Ghazi, ). Meanwhile, not many studies involving morphology, tissue morphological composition and possible variations of the septomarginal trabecula were performed.…”

Section: Introductionmentioning

confidence: 99%

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Histological and anatomical variations of septomarginal trabecula in bovine hearts

Nascimento

Ruiz

Oliva

2019

Anat Histol Embryol

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The use of hearts from different animals as models in the experimental pharmacology and surgical clinic has led, in recent years, to an increase on interest of research with this organ. The heart’s conducting system, from the septomarginal trabecula, presents several variations, which generates numerous controversies in the literature. So, the objective of the present study is to analyse the morphology of the septomarginal trabecula of bovine hearts, identifying possible macro‐ and microscopic variations. Thirty‐four bovine hearts were analysed. Each trabecula was analysed macroscopically to obtain an anatomical description and measurements of its length and thickness. For histological and morphometric analysis, the samples were fixed in Bouin’s solution and then subjected to histological processing. In all the analysed bovine hearts, the septomarginal trabecula presented itself as a smooth, tubular meaty structure of muscular consistency, with variable length and diameter. The anatomical variations observed included a trabecula with forked marginal fixation, and single septal fixation, in addition to a trabecula with extremely reduced or excessively thick caliber. The septomarginal trabecula consists of cardiac muscle fibres, connective tissue, vascular tissue and conduction myofibrils or Purkinje fibres. In the samples of smaller thicknesses, there was a predominance of connective tissue and scarce cardiac muscle tissue, whereas in the thicker samples the predominance was of cardiac striated muscle tissue. Therefore, there are significant macro‐ and microscopic differences between the bovine septomarginal trabecula concerning their diameter and constituent tissue, and that can lead to possible changes in cardiac physiology.

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Section: Discussionsupporting

confidence: 87%

Section: Discussionmentioning

confidence: 52%

Section: Discussionmentioning

confidence: 61%

Section: Introductionmentioning

confidence: 99%

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Histological and anatomical variations of septomarginal trabecula in bovine hearts

Nascimento

Ruiz

Oliva

2019

Anat Histol Embryol

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“…Its function is to prevent distension of the right ventricle and to transmit the right branch of the atrioventricular bundle to the right ventricle. Furthermore, the ST has an important role in the contraction and relaxation of the ventricles [8][9][10][11][12][13][14][15][16][17][18][19][20][21][22] .…”

Section: Introductionmentioning

confidence: 99%

Histomorphometry and Stereological Study of Septomarginal Trabecula in Pig’s Heart

Nascimento¹,

Ruiz²,

Nunes³

et al. 2021

JMS

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Morphology of septomarginal trabeculae in Hatay mountain gazelle (Gazella gazella)

Erdem

Tutar

Takçı

et al. 2021

Anat Histol Embryol

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This study was conducted to reveal the anatomical and histological features of left and right septomarginal trabeculae in the heart of the Hatay mountain gazelle. In the study, two female and two male adult Hatay mountain gazelle hearts were used. For this purpose, the materials detected in 10% formaldehyde solution were stained with Crossman's modified triple staining technique and examined under a light microscope after anatomical examinations and measurements were made. The presence of trabeculae in both ventricles was demonstrated. While the number of septomarginal trabeculae was 1 in each of the samples in the right ventricle, it was determined that it was 2 in each of three hearts and 3 in one heart in the left ventricle. It was observed that the right trabeculae were unbranched and fleshy, while the left trabeculae were filamentous and mostly branched. The lengths and thicknesses of the right trabeculae were measured 12–17 mm and 3–4 mm and the lengths and thicknesses of the left trabeculae were measured 6–15 mm and 0.5–1 mm. In the histological examination of both trabeculae, connective tissue, Purkinje fibres and blood vessels were observed, in addition, it was detected that the right trabeculae had myocardial fibres. Few capillaries were found in the left trabecula, while both more capillaries and blood vessels were found in the right trabeculae.

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Stereometry Study of Septomarginal Trabecula in Equines

Cited by 4 publications

References 4 publications

Histological and anatomical variations of septomarginal trabecula in bovine hearts

Histological and anatomical variations of septomarginal trabecula in bovine hearts

Histomorphometry and Stereological Study of Septomarginal Trabecula in Pig’s Heart

Morphology of septomarginal trabeculae in Hatay mountain gazelle (Gazella gazella)

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