Die Übergangszone in der Tunica media der Nierenarterie mit einer maximalen Länge von 10 Millimetern

Janzen, Jan; Lanzer, Peter; Rothenberger-Janzen, K; Vuong, P. N.

doi:10.1024/0301-1526.29.3.168

Cited by 16 publications

(3 citation statements)

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“…The underlying arterial structure could have a potential influence. The LMCA, proximal ICA, proximal renal artery and external iliac artery involve a transitional zone between elastic and muscular artery types [11,12], which are prone to foam cell lesions and lipid cores. In addition, the underlying differences in hemodynamics such as non-uniform distribution and higher time-dependent wall shear rate in carotid compared with femoral arteries [13] might be etiologic [14].…”

Section: Discussionmentioning

confidence: 99%

Plaque characteristics and arterial remodeling in coronary and peripheral arterial systems

et al. 2012

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Background Few studies have examined plaque characteristics among multiple arterial beds in vivo. The purpose of this study was to compare the plaque morphology and arterial remodeling between coronary and peripheral arteries using gray-scale and radiofrequency intravascular ultrasound (IVUS) at clinical presentation. Methods and Results IVUS imaging was performed in 68 patients with coronary and 93 with peripheral artery lesions (29 carotid, 50 renal, and 14 iliac arteries). Plaques were classified as fibroatheroma (VH-FA) (further subclassified as thin-capped [VH-TCFA] and thick-capped [VH-ThCFA]), fibrocalcific plaque (VH-FC) and pathological intimal thickening (VH-PIT). Plaque rupture (13% of coronary, 7% of carotid, 6% of renal, and 7% of iliac arteries; P=NS) and VHTCFA (37% of coronary, 24% of carotid, 16% of renal, and 7% of iliac arteries; p=0.02) were observed in all arteries. Compared with coronary arteries, VH-FA was less frequently observed in renal (p<0.001) and iliac arteries (p<0.006). Lesions with positive remodeling demonstrated more characteristics of VH-FA in coronary (84% vs. 25%, p<0.001), carotid (72% vs. 20%, p=0.001), and renal arteries (42% vs. 4%, p=0.001) compared with those with intermediate/negative remodeling. There was positive relationship between RI and percent necrotic area in all four arteries. Conclusions Atherosclerotic plaque phenotypes were heterogeneous among four different arteries; renal and iliac arteries had more stable phenotypes compared with coronary artery. In contrast, the associations of remodeling pattern with plaque phenotype and composition were similar among the various arterial beds.

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Section: Discussionmentioning

confidence: 99%

Plaque characteristics and arterial remodeling in coronary and peripheral arterial systems

et al. 2012

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“…In the White Carneau pigeon, a transitional zone has been reported in the coeliac artery which was about 1 cm (Lauper et al 1975). In humans, the typical transitional zone was reported in the renal artery with maximally 10-mm long and in the internal and external carotid artery with between 5-and 15-mm long (Janzen et al 2000(Janzen et al , 2001. The tunica media in the origin of the external carotid artery showed a structure intermediate between the common carotid artery and the distal external carotid artery and was therefore named the transitional zone, and in this zone the rows of elastic fibres were more numerous and the external elastic membrane was absent.…”

Section: Discussionmentioning

confidence: 99%

A microscopic study of the external carotid artery transitional zone of the adult male dog

Nowrozani

Zareiyan

2011

Journal of Applied Animal Research

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Structure and length of transitional zone in the dog's external carotid artery was documented. Six normal adult male dogs were studied. The specimens were processed in the routine way by light and electron microscopy. It was established that the transitional zone with 17-mm length contains parallel and fenestrated elastic fibres. In the transitional zone, the elastic fibres in the extracellular space were greater in number than collagen fibres. However, in the non-transitional zone, the rows of smooth muscle cells were greater in number. There were more collagen fibres than elastic fibres in the extracellular space and the elastic fibres appeared to be fragmented. Therefore, the transitional zone showed a structure intermediate between those of elastic and muscular arteries. The involvement of a special structure of transitional zone in vascular disease such as atherosclerosis is suggested.

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“…Mechanically, both the internal carotid and the renal arteries are sub-jected to repeated stretching during motion and respiration, which may induce in-jury. This hypothesis is supported by the observation that renal FMD is more prevalent on the right side, on which the renal artery is longer making the right kidney more subject to renal ptosis than the left one [5]. FMD should be excluded in young people presenting with acute carotid artery dissection or occlu-sion.…”

Section: Fibromuscular Dysplasia (Fmd)mentioning

confidence: 97%

Management of Renal Artery Stenosis - An Update

Alhadad

2008

Libyan J Med

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The role of the renal vasculature in eliciting renovascular hypertension (RVH) was established in 1934, when Goldblatt et al. [1] in a classical experimental study demonstrated that partial obstruction of the renal artery increased mean arterial blood pressure (BP). The pathophysiology of renal artery stenosis (RAS) is incompletely understood but has been postulated to be related to increased afterload from neurohormonal activation and cytokine release [2]. Atherosclerotic RAS (ARAS) is increasingly diagnosed in the expanding elderly population, which also has a high prevalence of arterial hypertension. There is still considerable uncertainty concerning the optimal management of patients with RAS. Many hypertensive patients with RAS have co-existing essential hypertension and furthermore, it is often difficult to determine to what degree the RAS is responsible for the impairment of renal function. There are three possible treatment strategies: medical management, surgery, or percutaneous transluminal renal angioplasty (PTRA) with or without stent implantation. The use of stents has improved the technical success rate of PTRA and also led to lower risk of restenosis, in particular for ostial RAS. PTRA with stenting has therefore replaced surgical revascularisation for most patients with RAS and has led to a lower threshold for intervention. The treatment of choice to control hypertension in fibromuscular dysplasia (FMD) is generally accepted to be PTRA [3]. In ARAS, on the other hand, the benefits with PTRA are less clear [4] and the challenge to identify which patients are likely to benefit from revascularisation remains unknown.

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Die Übergangszone in der Tunica media der Nierenarterie mit einer maximalen Länge von 10 Millimetern

Cited by 16 publications

References 0 publications

Plaque characteristics and arterial remodeling in coronary and peripheral arterial systems

Plaque characteristics and arterial remodeling in coronary and peripheral arterial systems

A microscopic study of the external carotid artery transitional zone of the adult male dog

Management of Renal Artery Stenosis - An Update

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