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Annual Review of Biomedical Engineering

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https://www.readbyqxmd.com/read/29641908/arterial-venous-differentiation-for-vascular-bioengineering
#1
Laura Niklason, Guohao Dai
The development processes of arteries and veins are fundamentally different, leading to distinct differences in anatomy, structure, and function as well as molecular profiles. Understanding the complex interaction between genetic and epigenetic pathways, as well as extracellular and biomechanical signals that orchestrate arterial venous differentiation, is not only critical for the understanding of vascular diseases of arteries and veins but also valuable for vascular tissue engineering strategies. Recent research has suggested that certain transcriptional factors not only control arterial venous differentiation during development but also play a critical role in adult vessel function and disease processes...
April 11, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29641907/physiology-and-engineering-of-the-graded-interfaces-of-musculoskeletal-junctions
#2
Edward D Bonnevie, Robert L Mauck
The connective tissues of the musculoskeletal system can be grouped into fibrous, cartilaginous, and calcified tissues. While each tissue type has a distinct composition and function, the intersections between these tissues result in the formation of complex, composite, and graded junctions. The complexity of these interfaces is a critical aspect of their healthy function, but poses a significant challenge for their repair. In this review, we describe the organization and structure of complex musculoskeletal interfaces, identify emerging technologies for engineering such structures, and outline the requirements for assessing the complex nature of these tissues in the context of recapitulating their function through tissue engineering...
April 11, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29621404/inorganic-nanomaterials-for-soft-tissue-repair-and-regeneration
#3
Russell Urie, Deepanjan Ghosh, Inam Ridha, Kaushal Rege
Inorganic nanomaterials have witnessed significant advances in areas of medicine including cancer therapy, imaging, and drug delivery, but their use in soft tissue repair and regeneration is in its infancy. Metallic, ceramic, and carbon allotrope nanoparticles have shown promise in facilitating tissue repair and regeneration. Inorganic nanomaterials have been employed to improve stem cell engraftment in cellular therapy, material mechanical stability in tissue repair, electrical conductivity in nerve and cardiac regeneration, adhesion strength in tissue approximation, and antibacterial capacity in wound dressings...
April 5, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29618223/structural-dna-nanotechnology-artificial-nanostructures-for-biomedical-research
#4
Yonggang Ke, Carlos Castro, Jong Hyun Choi
Structural DNA nanotechnology utilizes synthetic or biologic DNA as designer molecules for the self-assembly of artificial nanostructures. The field is founded upon the specific interactions between DNA molecules, known as Watson-Crick base pairing. After decades of active pursuit, DNA has demonstrated unprecedented versatility in constructing artificial nanostructures with significant complexity and programmability. The nanostructures could be either static, with well-controlled physicochemical properties, or dynamic, with the ability to reconfigure upon external stimuli...
April 4, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29539267/circulating-tumor-cells-diagnostic-and-therapeutic-applications
#5
Eric Lin, Thong Cao, Sunitha Nagrath, Michael R King
Metastasis contributes to poor prognosis in many types of cancer and is the leading cause of cancer-related deaths. Tumor cells metastasize to distant sites via the circulatory and lymphatic systems. In this review, we discuss the potential of circulating tumor cells for diagnosis and describe the experimental therapeutics that aim to target these disseminating cancer cells. We discuss the advantages and limitations of such strategies and how they may lead to the development of the next generation of antimetastasis treatments...
March 14, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29528686/synthetic-biology-approaches-to-engineer-probiotics-and-members-of-the-human-microbiota-for-biomedical-applications
#6
Josef R Bober, Chase L Beisel, Nikhil U Nair
An increasing number of studies have strongly correlated the composition of the human microbiota with many human health conditions and, in several cases, have shown that manipulating the microbiota directly affects health. These insights have generated significant interest in engineering indigenous microbiota community members and nonresident probiotic bacteria as biotic diagnostics and therapeutics that can probe and improve human health. In this review, we discuss recent advances in synthetic biology to engineer commensal and probiotic lactic acid bacteria, bifidobacteria, and Bacteroides for these purposes, and we provide our perspective on the future potential of these technologies...
March 12, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29505729/advanced-endoscopic-navigation-surgical-big-data-methodology-and-applications
#7
Xiongbao Luo, Kensaku Mori, Terry M Peters
Interventional endoscopy (e.g., bronchoscopy, colonoscopy, laparoscopy, cystoscopy) is a widely performed procedure that involves either diagnosis of suspicious lesions or guidance for minimally invasive surgery in a variety of organs within the body cavity. Endoscopy may also be used to guide the introduction of certain items (e.g., stents) into the body. Endoscopic navigation systems seek to integrate big data with multimodal information (e.g., computed tomography, magnetic resonance images, endoscopic video sequences, ultrasound images, external trackers) relative to the patient's anatomy, control the movement of medical endoscopes and surgical tools, and guide the surgeon's actions during endoscopic interventions...
March 5, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29494214/facet-joints-of-the-spine-structure-function-relationships-problems-and-treatments-and-the-potential-for-regeneration
#8
Siobhan A O'Leary, Nikolaos K Paschos, Jarrett M Link, Eric O Klineberg, Jerry C Hu, Kyriacos A Athanasiou
The zygapophyseal joint, a diarthrodial joint commonly referred to as the facet joint, plays a pivotal role in back pain, a condition that has been a leading cause of global disability since 1990. Along with the intervertebral disc, the facet joint supports spinal motion and aids in spinal stability. Highly susceptible to early development of osteoarthritis, the facet is responsible for a significant amount of pain in the low-back, mid-back, and neck regions. Current noninvasive treatments cannot offer long-term pain relief, while invasive treatments can relieve pain but fail to preserve joint functionality...
March 1, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29494213/electrophysiological-source-imaging-a-noninvasive-window-to-brain-dynamics
#9
Bin He, Abbas Sohrabpour, Emery Brown, Zhongming Liu
Brain activity and connectivity are distributed in the three-dimensional space and evolve in time. It is important to image brain dynamics with high spatial and temporal resolution. Electroencephalography (EEG) and magnetoencephalography (MEG) are noninvasive measurements associated with complex neural activations and interactions that encode brain functions. Electrophysiological source imaging estimates the underlying brain electrical sources from EEG and MEG measurements. It offers increasingly improved spatial resolution and intrinsically high temporal resolution for imaging large-scale brain activity and connectivity on a wide range of timescales...
March 1, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29345977/targeted-and-nontargeted-%C3%AE-particle-therapies
#10
Michael R McDevitt, George Sgouros, Stavroula Sofou
α-Particle irradiation of cancerous tissue is increasingly recognized as a potent therapeutic option. We briefly review the physics, radiobiology, and dosimetry of α-particle emitters, as well as the distinguishing features that make them unique for radiopharmaceutical therapy. We also review the emerging clinical role of α-particle therapy in managing cancer and recent studies on in vitro and preclinical α-particle therapy delivered by antibodies, other small molecules, and nanometer-sized particles. In addition to their unique radiopharmaceutical characteristics, the increased availability and improved radiochemistry of α-particle radionuclides have contributed to the growing recent interest in α-particle radiotherapy...
January 18, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29345976/synthetic-biology-immunotherapy-by-design
#11
Matthew J Brenner, Jang Hwan Cho, Nicole M L Wong, Wilson W Wong
Cellular immunotherapy holds great promise for the treatment of human disease. Clinical evidence suggests that T cell immunotherapies have the potential to combat cancers that evade traditional immunotherapy. Despite promising results, adverse effects leading to fatalities have left scientists seeking tighter control over these therapies, which is reflected in the growing body of synthetic biology literature focused on developing tightly controlled, context-independent parts. In addition, researchers are adapting these tools for other uses, such as for the treatment of autoimmune disease, HIV infection, and fungal interactions...
January 18, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29328778/engineering-approaches-to-study-cellular-decision-making
#12
Pamela K Kreeger, Laura E Strong, Kristyn S Masters
In their native environment, cells are immersed in a complex milieu of biochemical and biophysical cues. These cues may include growth factors, the extracellular matrix, cell-cell contacts, stiffness, and topography, and they are responsible for regulating cellular behaviors such as adhesion, proliferation, migration, apoptosis, and differentiation. The decision-making process used to convert these extracellular inputs into actions is highly complex and sensitive to changes both in the type of individual cue (e...
January 12, 2018: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/29220201/engineering-hydrogel-microenvironments-to-recapitulate-the-stem-cell-niche
#13
Christopher M Madl, Sarah C Heilshorn
Stem cells are a powerful resource for many applications including regenerative medicine, patient-specific disease modeling, and toxicology screening. However, eliciting the desired behavior from stem cells, such as expansion in a naïve state or differentiation into a particular mature lineage, remains challenging. Drawing inspiration from the native stem cell niche, hydrogel platforms have been developed to regulate stem cell fate by controlling microenvironmental parameters including matrix mechanics, degradability, cell-adhesive ligand presentation, local microstructure, and cell-cell interactions...
December 8, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633567/endogenous-bioelectric-signaling-networks-exploiting-voltage-gradients-for-control-of-growth-and-form
#14
REVIEW
Michael Levin, Giovanni Pezzulo, Joshua M Finkelstein
Living systems exhibit remarkable abilities to self-assemble, regenerate, and remodel complex shapes. How cellular networks construct and repair specific anatomical outcomes is an open question at the heart of the next-generation science of bioengineering. Developmental bioelectricity is an exciting emerging discipline that exploits endogenous bioelectric signaling among many cell types to regulate pattern formation. We provide a brief overview of this field, review recent data in which bioelectricity is used to control patterning in a range of model systems, and describe the molecular tools being used to probe the role of bioelectrics in the dynamic control of complex anatomy...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633566/microsphere-based-scaffolds-in-regenerative-engineering
#15
REVIEW
Vineet Gupta, Yusuf Khan, Cory J Berkland, Cato T Laurencin, Michael S Detamore
Microspheres have long been used in drug delivery applications because of their controlled release capabilities. They have increasingly served as the fundamental building block for fabricating scaffolds for regenerative engineering because of their ability to provide a porous network, offer high-resolution control over spatial organization, and deliver growth factors/drugs and/or nanophase materials. Because they provide physicochemical gradients via spatiotemporal release of bioactive factors and nanophase ceramics, microspheres are a desirable tool for engineering complex tissues and biological interfaces...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633565/febio-history-and-advances
#16
REVIEW
Steve A Maas, Gerard A Ateshian, Jeffrey A Weiss
The principal goal of the FEBio project is to provide an advanced finite element tool for the biomechanics and biophysics communities that allows researchers to model mechanics, transport, and electrokinetic phenomena for biological systems accurately and efficiently. In addition, because FEBio is geared toward the research community, the code is designed such that new features can be added easily, thus making it an ideal tool for testing novel computational methods. Finally, because the success of a code is determined by its user base, integral goals of the FEBio project have been to offer support and outreach to our community; to provide mechanisms for dissemination of results, models, and data; and to encourage interaction between users...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633564/energy-harvesting-from-the-animal-human-body-for-self-powered-electronics
#17
REVIEW
Canan Dagdeviren, Zhou Li, Zhong Lin Wang
Living subjects (i.e., humans and animals) have abundant sources of energy in chemical, thermal, and mechanical forms. The use of these energies presents a viable way to overcome the battery capacity limitation that constrains the long-term operation of wearable/implantable devices. The intersection of novel materials and fabrication techniques offers boundless possibilities for the benefit of human health and well-being via various types of energy harvesters. This review summarizes the existing approaches that have been demonstrated to harvest energy from the bodies of living subjects for self-powered electronics...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633563/mammalian-synthetic-biology-engineering-biological-systems
#18
REVIEW
Joshua B Black, Pablo Perez-Pinera, Charles A Gersbach
The programming of new functions into mammalian cells has tremendous application in research and medicine. Continued improvements in the capacity to sequence and synthesize DNA have rapidly increased our understanding of mechanisms of gene function and regulation on a genome-wide scale and have expanded the set of genetic components available for programming cell biology. The invention of new research tools, including targetable DNA-binding systems such as CRISPR/Cas9 and sensor-actuator devices that can recognize and respond to diverse chemical, mechanical, and optical inputs, has enabled precise control of complex cellular behaviors at unprecedented spatial and temporal resolution...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633562/advances-in-imaging-brain-metabolism
#19
REVIEW
Fahmeed Hyder, Douglas L Rothman
Metabolism is central to neuroimaging because it can reveal pathways by which neuronal and glial cells use nutrients to fuel their growth and function. We focus on advanced magnetic resonance imaging (MRI) and magnetic resonance spectroscopy (MRS) methods used in brain metabolic studies. 17 O-MRS and 31 P-MRS, respectively, provide rates of oxygen use and ATP synthesis inside mitochondria, whereas 19 F-MRS enables measurement of cytosolic glucose metabolism. Calibrated functional MRI (fMRI), an advanced form of fMRI that uses contrast generated by deoxyhemoglobin, provides maps of oxygen use that track neuronal firing across brain regions...
June 21, 2017: Annual Review of Biomedical Engineering
https://www.readbyqxmd.com/read/28633561/regulation-of-energy-homeostasis-after-gastric-bypass-surgery
#20
REVIEW
Martin L Yarmush, Matthew D'Alessandro, Nima Saeidi
The obesity epidemic continues to escalate each year in the United States more than anywhere else in the world. The existing pharmaceutical and other nonsurgical treatments for morbid obesity produce suboptimal physiologic outcomes compared with those of Roux-en-Y gastric bypass (RYGB) surgery. RYGB has been the gold standard of bariatric surgery because the beneficial long-term outcomes, which include sustainable weight loss and type 2 diabetes mellitus (T2DM) resolution, are far superior to those obtained with other bariatric surgeries...
June 21, 2017: Annual Review of Biomedical Engineering
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