The Right Coronary Artery is Absent in the Chinchilla (<i>Chinchilla lanigera</i>)

Özdemir, Vural; Çevik-Demirkan, A.; Türkmenoğlu, İsmail

doi:10.1111/j.1439-0264.2007.00803.x

Cited by 15 publications

(19 citation statements)

References 15 publications

(41 reference statements)

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“…Similar observations were made in ruminants (Nickel et al 1981;Barone 1996), reo deer (Frąckowiak et al 2007), Bactrian camel (Yuan et al 2009), European bison (Kupczyńska et al 2015) and Angora rabbit (Bahar et al 2007). However, in dog was described the additional right coronary artery (Bezuidenhout 2013) while in chinchilla the right coronary artery was absent Ozdemir et al (2008). In our study, the right coronary artery terminated primarily as small branches on the atrial surface of the heart.…”

Section: Discussionsupporting

confidence: 38%

“…There were a stronger paraconal interventricular branch and a weaker circumflex branch. This type of trunk morphology has also been described in ruminants (Nickel et al 1981;Barone 1996), roe deer (Frąckowiak et al 2007), Bactrian camel (Yuan et al 2009), donkey (Ozgel et al 2004), porcupine (Atalar et al 2003), ringed seal (Smodlaka et al 2008), chinchilla (Ozdemir et al 2008), cat (Barszcz et al 2014(Barszcz et al , 2016b and European bison (Kupczyńska et al 2015). Whereas Bahar et al (2007) reported that in the Angora rabbit, the common trunk of the left coronary artery was divided into the paraconal interventricular branch, the circumflex branch and the proximal branch of the left atrium.…”

Section: Discussionmentioning

confidence: 66%

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Topography of coronary arteries and their ramifications in the goat

et al. 2019

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The aim of this study was to investigate the morphology of the coronary arteries of the goat's heart. The study was carried out on 36 hearts of adult females dairy goats, belonging to two breeds, aged 7-12 years, with an average body weight of 37 kg. A distinct view of coronary arteries and their branches was obtained by filling them with dyed synthetic latex (LBS 3060) or Batson's No. 17. In all studied goats the common trunk of the left coronary artery was divided into the interventricular paraconal branch and the circumflex branch. The branch of the interventricular septum originated in the interventricular paraconal branch. In 25 individuals (69%) the circumflex branch ended with small ramifications on the atrial surface of the heart. In 11 individuals (31%), the vessel extended in the subsinuosal interventricular groove into the subsinuosal interventricular branch. The right coronary artery was less developed than the left coronary artery. In 35 individuals (97%) the right coronary artery ended with small ramifications on the atrial surface of the heart. In one goat (3%) the vessel reached the subsinuosal interventricular groove and extended into the subsinuosal interventricular branch.

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Section: Discussionsupporting

confidence: 38%

Section: Discussionmentioning

confidence: 66%

Topography of coronary arteries and their ramifications in the goat

et al. 2019

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“…La predominancia de la coronaria izquierda sobre la derecha se ha demostrado en varias especies como el corzo (Frackowiak et al, 2006), el puerco espín (Atalar et al, 2003), el ratón (Yoldas et al, 2010) y en los rumiantes domésticos, donde la rama circunfleja de la arteria coronaria izquierda da origen a la arteria interventricular subsinusal (Barone). Incluso Ozdemir et al (2008) publicaron que la arteria coronaria derecha no existe en la chinchilla (Chinchilla lanígera).…”

Section: Discussionunclassified

Aspectos Macroanatómicos del Corazón del Carpincho ( Hydrochoerus hydrochaeris )

Magariños¹,

Benech²,

Vazquez³

et al. 2018

Int. J. Morphol.

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Morphol., 36(1):235-242, 2018. RESUMEN:La información disponible sobre el aparato cardiovascular del carpincho (Hydrochoerus hydrochaeris) es escasa. El objetivo general de este estudio fue describir la anatomía cardíaca de esta especie. Se utilizaron 6 animales adultos y 5 neonatos, libres de patologías del aparato cardiovascular. El método de estudio de los animales fue la disección simple. El corazón del carpincho estaba ubicado desde el segundo espacio intercostal hasta la sexta costilla. El ligamento frenicopericárdico unía el pericardio fibroso al esternón y al diafragma. El tubérculo intervenoso era de escaso desarrollo. En la aurícula derecha se encontraban escasos músculos pectinados. Los músculos papilares derechos presentaban entre ellos trabéculas septomarginales. Las trabéculas carnosas presentaban un marcado desarrollo sobre la pared marginal del ventrículo derecho. También había grandes trabéculas carnosas sobre la pared septal, que sin embargo era algo más lisa. Los músculos papilares izquierdos eran dos, situados opuestos uno al otro y sobre la pared septal. Ambos eran simples y emitían cuerdas tendinosas hacia ambas cúspides de la válvula atrioventricular izquierda. Las trabéculas carnosas del ventrículo izquierdo eran menos numerosas. Entre ambos músculos papilares existía una gran trabécula carnosa que ocupaba gran parte de la extensión dorsoventral de la pared septal del ventrículo izquierdo. De ambas arterias coronarias, la arteria coronaria izquierda que surgía del seno coronario izquierdo de la aorta era la más importante, de mayor tamaño y de mayor distribución, encargándose de la irrigación de la mayoría del territorio cardíaco. La rama interventricular paraconal se dirigía por el surco interventricular paraconal y terminaba sobre el margen ventricular derecho anastomosándose con la rama interventricular subsinusal que venía por el surco del mismo nombre. Con otras técnicas, es necesario realizar estudios histológicos, semiológicos y fisiológicos en el corazón de esta especie para entender mejor su anatomía y fisiología.

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“…The arterial vascularization of the heart was previously described [24] as well as digestive tube segments [23]. Other studies on the aortic arch in chinchilla were published later in 2004 and 2005 [2,28].…”

Section: Introductionmentioning

confidence: 99%

Anatomical and Imagistic Aspects of the Aortic Arch in Chinchilla lanigera

Martonos

Lăcătuş

Cocan

et al. 2018

Acta Scientiae. Vet.

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Background: The investigation on the cardiocirculatory system in chinchilla has become increasingly important due to the use of the species in experimental medicine (toxicology, pathology, parasitology etc.). Even though initially this species was regarded with a strict economic interest, in the last period, chinchillas have become an increasingly-encountered patient in veterinary clinics and hospitals. Another aspect is the use of the species in medical research, as experimental model or in parasitology. The present study tackles a combined anatomical and radiological (angiographical) study to accurately describe the vascular anatomy of the initial part of the aortic arch (Arcus aortae).Materials, Methods & Results: The anatomical distribution of collaterals detached from arcus aorticus (brachiocephalic trunk and subclavian arteries) are highlighted in this paper. To do that, the classical stratigraphic anatomical investigation, followed by the radiological study with the help of the contrast substance injected into the vascular bed were used in combination. Several Chinchilla lanigera female carcasses, obtained from a private commercial farming unit in Cluj county, Romania were used for this study. Ten carcasses were used for the anatomical study, being injected into the vascular bed with a mixture of latex and acrylic dye, fixated into formaldehyde 5% and later dissected, while the other ten carcasses were injected at the level of the aortic arch with Visipaque 320 contrast substance and subjected to the angiographical procedure.The anatomical investigation was carried after an initial 5 day-fixation period, while the angiographic procedure was initiated using the TEMCO Grx-01 device and the Veterinary Digital Imaging System® as digital imaging processing software. This combined study shows the differential mode of emergence of the subclavian and carotid arteries in this species. The brachiocephalic trunk is the first large collateral branch arising from the initial part of the aortic cross while the left subclavian artery, in all studied cases, stems from this initial part of the aortic arch. The right subclavian artery arises from the terminal part of the brachiocephalic trunk, at the cranial border of the first rib. The continuation of the trunk is represented by right common carotid artery that follows the right jugular groove. The left common carotid artery emerges at the medial aspect of the first intercostal space as a collateral branch detached from the brachiocephalic trunk, in its initial sector. In respect to the collaterals emerging from the subclavian arteries, our study showed that in all studied cases, four branches arise in sequence- the internal thoracic, dorsal scapular, vertebral and superficial cervical arteries. The existence of the common trunks (internal thoracic, dorsal scapular arteries and superficial and deep cervical arteries (as described by other authors) was not confirmed on the investigated specimens.Discussion: The paper highlights some interesting facts referring to the specific morphology of the aortic arch in chinchilla, as literature data provides some divergent data. Some of the aspects noted are confirmed (the emergence of subclavian arteries) while some others are still subjects to discussion and further investigation (collateral branches of subclavian arteries). Our approach focuses also on the comparative aspects of the morphology of the branches emerging from the aortic arch. According to the available literature, the following species were used as comparison: leporids, Guinea pig, squirrel, yellow-necked mouse, Egyptian mouse, rat, armadillo, nutria, capybara, paca, fox and leopard.

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The Right Coronary Artery is Absent in the Chinchilla (Chinchilla lanigera)

Cited by 15 publications

References 15 publications

Topography of coronary arteries and their ramifications in the goat

Topography of coronary arteries and their ramifications in the goat

Aspectos Macroanatómicos del Corazón del Carpincho ( Hydrochoerus hydrochaeris )

Anatomical and Imagistic Aspects of the Aortic Arch in Chinchilla lanigera

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