Accessing the structure and function information of deep skin blood vessels with noninvasive optical method

Author(s):  
Jing Wang ◽  
Zhongwei Zhi ◽  
Zhenzhen Han ◽  
Caihua Liu ◽  
Zongzhen Mao ◽  
...  
F1000Research ◽  
2017 ◽  
Vol 6 ◽  
pp. 2158 ◽  
Author(s):  
Ivana Gadjanski

Articular cartilage (AC) is a seemingly simple tissue that has only one type of constituting cell and no blood vessels and nerves. In the early days of tissue engineering, cartilage appeared to be an easy and promising target for reconstruction and this was especially motivating because of widespread AC pathologies such as osteoarthritis and frequent sports-induced injuries. However, AC has proven to be anything but simple. Recreating the varying properties of its zonal structure is a challenge that has not yet been fully answered. This caused the shift in tissue engineering strategies toward bioinspired or biomimetic approaches that attempt to mimic and simulate as much as possible the structure and function of the native tissues. Hydrogels, particularly gradient hydrogels, have shown great potential as components of the biomimetic engineering of the cartilaginous tissue.


Lab on a Chip ◽  
2015 ◽  
Vol 15 (12) ◽  
pp. 2660-2669 ◽  
Author(s):  
Sanjesh Yasotharan ◽  
Sascha Pinto ◽  
John G. Sled ◽  
Steffen-Sebastian Bolz ◽  
Axel Günther

We present a compact microfluidic platform for the automated, multimodal assessment of intact small blood vesselsin vitro.


2021 ◽  
Vol 19 (1) ◽  
Author(s):  
Wei Liu ◽  
Cui Hou ◽  
Miao Hou ◽  
Qiu-Qin Xu ◽  
Hui Wang ◽  
...  

Abstract Background Essential hypertension in adults may begin in childhood. The damages to the heart and blood vessels in children with essential hypertension are hidden and difficult to detect. We noninvasively examined changes in cardiovascular structure and function in children with hypertension at early stage using ultrasonography. Methods All patients with essential hypertension admitted from March 2020 to May 2021 were classified into simple hypertension (group 1, n = 34) and hypertension co-existing with obesity (group 2, n = 11) isolation. Meanwhile 32 healthy children were detected as control heathly group (group 3). We used pulse-wave Doppler to measure carotid–femoral pulse wave velocity (cfPWV), intimal–medial thickness (cIMT) and distensibility of carotid artery (CD). Cardiac structure and function (left atrial diameter [LAD], left ventricular mass [LVM], LVM index [LVMI], relative wall thicknes [RWT], end-diastolic left ventricular internal diameter [LVIDd], diastolic interventricular septum thickness [IVSd], diastolic left ventricular posterior wall thickness [LVPWd], root diameter of aorta [AO], E peak, A peak, E' peak, A' peak, E/E' ratio, and E/A ratio) were measured by echocardiography. Results The cfPWV of children in group 1 and group 2 were significantly higher than healthy children in group 3. Significant differences were observed in LVM, LVMI, RWT, LVIDd, IVSd, LVPWd, LAD, A peak, E' peak, A' peak, and E/E’ among three groups. Conclusion Children and adolescents with essential hypertension demonstrate target organ damages in the heart and blood vessels.


Author(s):  
Nicholas W. Morrell

The normal pulmonary circulation distributes deoxygenated blood at low pressure and high flow to the pulmonary capillaries for the purposes of gas exchange. The structure of pulmonary blood vessels varies with their function—from large elastic conductance arteries, to small muscular arteries, to thin-walled vessels involved in gas exchange....


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