Magnetotactic Bacteria and Magnetosomes: Basic Properties and Applications

Magnetotactic bacteria (MTB) belong to several phyla. This class of microorganisms exhibits the ability of magneto-aerotaxis. MTB synthesize biominerals in organelle-like structures called magnetosomes, which contain single-domain crystals of magnetite (Fe3O4) or greigite (Fe3S4) characterized by a high degree of structural and compositional perfection. Magnetosomes from dead MTB could be preserved in sediments (called fossil magnetosomes or magnetofossils). Under certain conditions, magnetofossils are capable of retaining their remanence for millions of years. This accounts for the growing interest in MTB and magnetofossils in paleo- and rock magnetism and in a wider field of biogeoscience. At the same time, high biocompatibility of magnetosomes makes possible their potential use in biomedical applications, including magnetic resonance imaging, hyperthermia, magnetically guided drug delivery, and immunomagnetic analysis. In this review, we attempt to summarize the current state of the art in the field of MTB research and applications.

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Coronary magnetic resonance imaging: current state-of-the-art

Coronary Artery Disease ◽

10.1097/00019501-200509000-00003 ◽

2005 ◽

Vol 16 (6) ◽

pp. 345-353 ◽

Cited By ~ 6

Author(s):

Evan Appelbaum ◽

Ren?? M. Botnar ◽

Susan B. Yeon ◽

Warren J. Manning

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

State Of The Art ◽

Resonance Imaging ◽

Current State ◽

Coronary Magnetic Resonance

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Magnetic Resonance Imaging of Fe3O4 Nanoparticles Embedded in Living Magnetotactic Bacteria for Potential Use as Carriers for In Vivo Applications

2007 29th Annual International Conference of the IEEE Engineering in Medicine and Biology Society ◽

10.1109/iembs.2007.4352576 ◽

2007 ◽

Cited By ~ 4

Author(s):

Ouajdi Felfoul ◽

Mahmood Mohammadi ◽

Sylvain Martel

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Magnetotactic Bacteria ◽

Resonance Imaging ◽

Potential Use

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Cardiovascular magnetic resonance imaging in hypertrophic cardiomyopathy: Current state of the art

Cardiology Journal ◽

10.5603/cj.a2016.0019 ◽

2016 ◽

Vol 23 (3) ◽

pp. 250-263 ◽

Cited By ~ 8

Author(s):

Muhammad Umar Kamal ◽

Irbaz Bin Riaz ◽

Rajesh Janardhanan

Keyword(s):

Magnetic Resonance Imaging ◽

Cardiovascular Magnetic Resonance ◽

Hypertrophic Cardiomyopathy ◽

Magnetic Resonance ◽

Cardiovascular Magnetic Resonance Imaging ◽

State Of The Art ◽

Resonance Imaging ◽

Current State

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The Clinical Utility of Magnetic Resonance Imaging According to Field Strength, Specifically Addressing the Breadth of Current State-of-the-Art Systems, Which Include 0.55 T, 1.5 T, 3 T, and 7 T

Investigative Radiology ◽

10.1097/rli.0000000000000824 ◽

2021 ◽

Vol Publish Ahead of Print ◽

Author(s):

Val M. Runge ◽

Johannes T. Heverhagen

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Field Strength ◽

Clinical Utility ◽

State Of The Art ◽

Resonance Imaging ◽

Current State

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Neuroimaging at Term Equivalent Age: Is There Value for the Preterm Infant? A Narrative Summary

Children ◽

10.3390/children8030227 ◽

2021 ◽

Vol 8 (3) ◽

pp. 227

Author(s):

Rudaina Banihani ◽

Judy Seesahai ◽

Elizabeth Asztalos ◽

Paige Terrien Church

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Preterm Infant ◽

Resonance Imaging ◽

Long Term Outcomes ◽

Equivalent Age ◽

Current State ◽

Patterns Of Injury ◽

The Impact

Advances in neuroimaging of the preterm infant have enhanced the ability to detect brain injury. This added information has been a blessing and a curse. Neuroimaging, particularly with magnetic resonance imaging, has provided greater insight into the patterns of injury and specific vulnerabilities. It has also provided a better understanding of the microscopic and functional impacts of subtle and significant injuries. While the ability to detect injury is important and irresistible, the evidence for how these injuries link to specific long-term outcomes is less clear. In addition, the impact on parents can be profound. This narrative summary will review the history and current state of brain imaging, focusing on magnetic resonance imaging in the preterm population and the current state of the evidence for how these patterns relate to long-term outcomes.

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Polyphosphorhydrazone-Based Radical Dendrimers

Molecules ◽

10.3390/molecules26051230 ◽

2021 ◽

Vol 26 (5) ◽

pp. 1230

Author(s):

Vega Lloveras ◽

José Vidal-Gancedo

Keyword(s):

Magnetic Resonance Imaging ◽

Magnetic Resonance ◽

Contrast Agents ◽

Biomedical Applications ◽

Organic Radicals ◽

Resonance Imaging ◽

Metal Free ◽

Antioxidant Agents ◽

New Type ◽

Paramagnetic Properties

The search for new biomedical applications of dendrimers has promoted the synthesis of new radical-based molecules. Specifically, obtaining radical dendrimers has opened the door to their use in various fields such as magnetic resonance imaging, as anti-tumor or antioxidant agents, or the possibility of developing new types of devices based on the paramagnetic properties of organic radicals. Herein, we present a mini review of radical dendrimers based on polyphosphorhydrazone, a new type of macromolecule with which, thanks to their versatility, new metal-free contrast agents are being obtained, among other possible applications.

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Cardiac magnetic resonance imaging: insights into developmental programming and its consequences for aging

Journal of Developmental Origins of Health and Disease ◽

10.1017/s2040174420001233 ◽

2020 ◽

pp. 1-17

Author(s):

G.D. Clarke ◽

J. Li ◽

A.H. Kuo ◽

A.J. Moody ◽

P.W. Nathanielsz

Keyword(s):

Magnetic Resonance Imaging ◽

Cardiac Magnetic Resonance ◽

Magnetic Resonance ◽

Cardiac Magnetic Resonance Imaging ◽

Ventricular Remodeling ◽

Developmental Programming ◽

Resonance Imaging ◽

Current State ◽

Baboon Model ◽

Myocardial Steatosis

Abstract Cardiovascular diseases (CVD) are important consequences of adverse perinatal conditions such as fetal hypoxia and maternal malnutrition. Cardiac magnetic resonance imaging (CMR) can produce a wealth of physiological information related to the development of the heart. This review outlines the current state of CMR technologies and describes the physiological biomarkers that can be measured. These phenotypes include impaired ventricular and atrial function, maladaptive ventricular remodeling, and the proliferation of myocardial steatosis and fibrosis. The discussion outlines the applications of CMR to understanding the developmental pathways leading to impaired cardiac function. The use of CMR, both in animal models of developmental programming and in human studies, is described. Specific examples are given in a baboon model of intrauterine growth restriction (IUGR). CMR offers great potential as a tool for understanding the sequence of dysfunctional adaptations of developmental origin that can affect the human cardiovascular system.

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