Evaluation of popliteal artery branching patterns and a new subclassification of the ‘usual’ branching pattern

2017 ◽  
Vol 39 (9) ◽  
pp. 1005-1015
Author(s):  
Pinar Celtikci ◽  
Onur Ergun ◽  
Hasan Ali Durmaz ◽  
Isik Conkbayir ◽  
Baki Hekimoglu
2015 ◽  
Vol 64 ◽  
pp. S6-S7
Author(s):  
Darshana Bora ◽  
Mukul Sarma ◽  
Jyotirmayee Lahon

1980 ◽  
Vol 7 (1) ◽  
pp. 41-45
Author(s):  
C. Harkness ◽  
D. J. Wright

Abstract Variation in branching pattern was studied in six Virginia group peanut cultivais (ssp. hypogaea var. hypogaea). Lines with genetically distinct branching patterns differing from the normal pattern were readily found in two of the cultivars. These variable lines showed no yield advantage over the normal lines. It was concluded that there is considerable genetic variation for branching pattern in Virginia peanuts. The variation could be ascribed to a range of modifier genes which can change the normal pattern of branching. There were indications of a strong environmental effect on branching pattern and of a genotype by environment interaction.


2009 ◽  
Vol 75 (5) ◽  
pp. 1355-1362 ◽  
Author(s):  
M. Palomo ◽  
S. Kralj ◽  
M. J. E. C. van der Maarel ◽  
L. Dijkhuizen

ABSTRACT Glycogen branching enzymes (GBE) or 1,4-α-glucan branching enzymes (EC 2.4.1.18) introduce α-1,6 branching points in α-glucans, e.g., glycogen. To identify structural features in GBEs that determine their branching pattern specificity, the Deinococcus geothermalis and Deinococcus radiodurans GBE (GBEDg and GBEDr, respectively) were characterized. Compared to other GBEs described to date, these Deinococcus GBEs display unique branching patterns, both transferring relatively short side chains. In spite of their high amino acid sequence similarity (88%) the D. geothermalis enzyme had highest activity on amylose while the D. radiodurans enzyme preferred amylopectin. The side chain distributions of the products were clearly different: GBEDg transferred a larger number of smaller side chains; specifically, DP5 chains corresponded to 10% of the total amount of transferred chains, versus 6.5% for GBEDr. GH13-type GBEs are composed of a central (β/α) barrel catalytic domain and an N-terminal and a C-terminal domain. Characterization of hybrid Deinococcus GBEs revealed that the N2 modules of the N domains largely determined substrate specificity and the product branching pattern. The N2 module has recently been annotated as a carbohydrate binding module (CBM48). It appears likely that the distance between the sugar binding subsites in the active site and the CBM48 subdomain determines the average lengths of side chains transferred.


2019 ◽  
Vol 12 (4) ◽  
pp. 161-167
Author(s):  
Natcha Nateniyom ◽  
Thanasil Huanmanop ◽  
Sithiporn Agthong ◽  
Vilai Chentanez

AbstractBackgroundKnowledge of the anatomy of the celiac trunk (CT) and arterial supply of the hepatobiliary system is essential for surgical and interventional radiological treatment of upper abdominal diseases.ObjectivesTo determine the branching patterns of the CT and variation in origin and type of the right hepatic artery (RHA), left hepatic artery (LHA), and cystic artery (CA).MethodsThe anatomy of the CT in 100 cadavers from Thai adult donors was observed in 3 aspects: its branching pattern, the origin of the RHA and LHA, and the origin of the CA and its relation to the common bile duct (CBD) and common hepatic duct (CHD).ResultsThe majority of the CT branching pattern was categorized as the type II classical pattern, which has 3 branches: the left gastric artery (LGA), splenic artery (SA), and common hepatic artery (CHA). The RHA branched from proper hepatic artery in 67 cadavers. The origin of the accessory RHA was either from the abdominal aorta or superior mesenteric artery (SMA), whereas the replaced RHA originated from the CHA, SMA, or CT. The accessory LHA ramified from CHA (2 cases) and LGA (1 case). The replaced LHA was found in 30 cadavers and 29 arose from the CHA. The single and double types of CA were found in 94 and 4 cadavers, respectively. In all, 57% of single CA passed posteriorly and 39% passed anteriorly to the CBD and CHD.ConclusionsTo lower posttreatment complications, variations in the anatomy and the vascular supply of hepatobiliary structures should be considered.


2021 ◽  
Author(s):  
Iroshani Kodikara ◽  
Dhanusha Gamage ◽  
Sampath De Soyza ◽  
Isurani Ilayperuma

Abstract Background /ObjectivesBranching pattern of aortic arch (AA) has a direct impact on the outcome of thoracic surgical and angiographic procedures. Geographical variations in the branching pattern of AA has been described. Hence, this descriptive cross sectional study describes the AA variations in a Sri Lankan population compared to the available global statistics.MethodsContrast-enhanced computed tomographic studies (CTC) of thorax (n=219) performed in males (49.3%) and females (50.7%); aged 59±17 years (range: 4 to 96 years), were evaluated. Branching patterns of AA were categorized into seven types as described by Popieluszko et al.ResultsFour AA types were identified in the study population: Type 1 (90%; n=197), Type 2 (n=10, 4.6%), Type 3 (n=8, 3.7%) and Type 6 AA (n=4; 1.8%). The prevalence of AA variations was 10%. Type 1 was the most prevalent pattern in both genders: female-91%; males-88.9%. The most prevalent AA variant in females was Type 2 (n=6; 5.4%); males Type 3 (n=5; 4.6%). However, the branching pattern of AA has not demonstrated a significant gender influence (Odds: 0.792; 95% CI: 0.327 - 1.917; p=0.605). ConclusionVariations in branching pattern of AA is as high as 10% among Sri Lankans. Thus, an in-depth knowledge on population specific prevalence of AA variants would influence the modifications surgical approaches and the choice of angiographic catheters to be utilized, which in turn, would minimize inadvertent vascular injuries during thoracic surgical and angiographic interventions.


2012 ◽  
Vol 02 (01) ◽  
pp. 08-14
Author(s):  
Suresh Bidarkotimath ◽  
Ramakrishna Avadhani ◽  
Arunachalam Kumar

AbstractA detailed description of the vascular pattern of upper limbs especially their variations in their origin, course and branching pattern is of utmost importance anatomically in general and clinically in particular. These variations have drawn attention of surgeons, physicians, radiologist and interventionists due to the advanced surgical procedures practicd in vascular surgeries, plastic (reconstructive) surgeries and also for diagnostic and therapeutic approaches. 50 cadavers (100 upper limbs) were used for the study, which were dissected as the part of routine dissection for teaching undergraduate students at our institution. Length of the normal and variant arteries with mean, standard deviation, 'p' and 't' values are noted in each of the limbs. The following variations are observed - i) high division of brachial artery ii) higher origin of profunda brachii artery, iii) high origin of radial artery, iv) absence of common interosseous artery. The variations are of particular importance to the surgeons operating in the area, especially for those involved in vascular reconstructive surgeries. So it is prudent to do pre-operative studies of the brachial and antebrachial arteries and their branching patterns, to prevent possible complications post operatively.


Author(s):  
Ertugrul Mavili ◽  
Halil Donmez ◽  
Guven Kahriman ◽  
Aysel Ozaslamaci ◽  
Nevzat Ozcan ◽  
...  

2013 ◽  
Vol 138 (6) ◽  
pp. 407-415 ◽  
Author(s):  
Claudia Negrón ◽  
Loreto Contador ◽  
Bruce D. Lampinen ◽  
Samuel G. Metcalf ◽  
Theodore M. DeJong ◽  
...  

Different almond (Prunus dulcis) cultivars have been characterized by their contrasting shoot branching patterns; however, the differences between patterns have been difficult to quantify. This study aimed to model the branching patterns of 2-year-old proleptic shoots on three almond cultivars (Nonpareil, Aldrich, and Winters) representing different tree architectures. The effects of branching pattern on flowering were also studied. The branching patterns of shoots of different length categories were assessed by a single hidden semi-Markov model for each cultivar. The models identified zones of homogeneous branching composition along shoots and were used to extract the occurrence and number of nodes of the zones according to shoot length categories. The numbers of flower buds were also determined for each shoot length category in each cultivar. The models of branching patterns of ‘Nonpareil’ and ‘Aldrich’ were similar and differed from the ‘Winters’ model. ‘Winters’ shoots produced more zones, but some of the zones had similar characteristics as previous zones and thus appeared to be repeated. This cultivar also had more spurs and sylleptic shoots than the other cultivars. The occurrence and node number of the central zones decreased along with reduction in shoot length in all the cultivars. ‘Aldrich’ tended to have more flower buds than comparable-length shoots of the other two cultivars. This study provides a quantitative description of the shoot branching patterns of three important cultivars and explains how branching changes in relation to shoot length, whereas production of flower buds varies despite similar branching patterns.


2020 ◽  
Vol 6 (2) ◽  
pp. 60-62
Author(s):  
Reema Kanchan Khalkho ◽  
A. K. Dubey ◽  
Renu Prasad ◽  
Prabhat Kumar Lal

Introduction: Variations in branching of popliteal artery is important for the orthopaedicians, vascular surgeons and radiologists. The present study was conducted to assess the anatomical variations in popliteal artery, its terminal branching pattern. Subjects and Methods: The present cross-sectional study included 72 lower limbs received for cadaveric dissection. Anatomical variations of the popliteal artery were noted. Results: Type IA was the most common pattern seen (87.5%) followed by IB (5.6%) and IC (2.8%). One each of types IIA2, IIB and IIC were also seen. Mean length of 162.1 7.9 mm was observed from adductor magnus to the bifurcation point of popliteal artery. Conclusion: Type IA was the most common branching pattern seen in this area. However, types IB, IC, IIA2, IIB and IIC were also seen.


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