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The flagellated bacterium Escherichia coli is increasingly used experimentally as a self-propelled swimmer. To obtain meaningful, quantitative results that are comparable between different laboratories, reproducible protocols are needed to…

The flexibility of the bacterial flagellar hook is believed to have substantial consequences for microorganism locomotion. Using a simplified model of a rigid flagellum and a flexible hook, we show that the paths of axisymmetric cell bodies…

Biological Physics · Physics 2021-10-28 Zonghao Zou , Wilson Lough , Saverio E. Spagnolie

\textit{Plasmodium vivax} is the most geographically widespread malaria-causing parasite resulting in significant associated global morbidity and mortality. One of the factors driving this widespread phenomenon is the ability of the…

Populations and Evolution · Quantitative Biology 2023-09-18 Md Nurul Anwar , Roslyn I. Hickson , Somya Mehra , David J. Price , James M. McCaw , Mark B. Flegg , Jennifer A. Flegg

Intrinsically disordered proteins (IDPs), such as amyloid polypeptide (IAPP), beta-amyloid (A\b{eta}), and {\alpha}-synuclein are linked to the insurgence of type 2 diabetes, Alzheimer's, and Parkinson's diseases, respectively. Common…

Chemical Physics · Physics 2022-09-23 Fabio Lolicato , Carmelo Tempra , Martina Pannuzzo , Carmelo La Rosa

Ciliated microorganisms near the base of the aquatic food chain either swim to encounter prey or attach at a substrate and generate feeding currents to capture passing particles. Here, we represent attached and swimming ciliates using a…

Fluid Dynamics · Physics 2024-04-23 Jingyi Liu , Yi Man , John H. Costello , Eva Kanso

Inspired by recent suggestions that the Alzheimer's amyloid beta peptide (A beta) can insert into cell membranes and form harmful ion channels, we model insertion of the 40 and 42 residue forms of the peptide into cell membranes using a…

Biological Physics · Physics 2009-11-10 David L. Mobley , Daniel L. Cox , Rajiv R. P. Singh , Michael W. Maddox , Marjorie L. Longo

Wounding is a severe impairment of function, especially for an exposed organism like the network-forming true slime mould Physarum polycephalum. The tubular network making up the organism's body plan is entirely interconnected and shares a…

Quantitative Methods · Quantitative Biology 2017-10-25 Felix Bäuerle , Mirna Kramar , Karen Alim

Toxoplasma gondii is the causative agent responsible for toxoplasmosis and serves as one of the most common parasites in the world. For a successful lytic cycle, T. gondii must traverse biological barriers in order to invade host cells, and…

Quantitative Methods · Quantitative Biology 2017-08-21 Mojtaba Sedigh Fazli , Stephen Andrew Vella , Silvia N. J. Moreno , Shannon Quinn

According to the World Health Organization(WHO), malaria is estimated to have killed 627,000 people and infected over 241 million people in 2020 alone, a 12% increase from 2019. Microscopic diagnosis of blood cells is the standard testing…

Image and Video Processing · Electrical Eng. & Systems 2022-08-15 Rohan Sangameswaran

Cholesterol (CHOL) drives lipid segregation and is thus a key player for the formation of lipid rafts and followingly for the ability of a cell to, e.g., enable selective agglomeration of proteins. The lipid segregation is driven by…

Biological Physics · Physics 2021-03-26 Fabian Keller , Andreas Heuer

In the mammalian plasma membrane, cholesterol can translocate rapidly between the exoplasmic and cytoplasmic leaves, so that its distribution between them should be given by the equality of its chemical potential in the leaves. Due to its…

Biological Physics · Physics 2015-06-22 Ha Giang , Michael Schick

Electrical activity of fungus \emph{Pleurotus ostreatus} is characterised by slow (hours) irregular waves of baseline potential drift and fast (minutes) action potential likes spikes of the electrical potential. An exposure of the mycelium…

Neurons and Cognition · Quantitative Biology 2021-06-17 Andrew Adamatzky , Antoni Gandia

Most bacteria swim through fluids by rotating helical flagella which can take one of twelve distinct polymorphic shapes. The most common helical waveform is the "normal" form, used during forward swimming runs. To shed light on the…

Biological Physics · Physics 2015-03-17 Saverio E. Spagnolie , Eric Lauga

Fibronectin, a glycoprotein secreted by connective tissue cells is found in the human plasma as well as in the ECM. It is known to have an adhesive property and plays a role in cell-to-cell and cell-to-substratum adhesions. In rheumatoid…

Tissues and Organs · Quantitative Biology 2015-11-24 S Dutta Sinha , P. K. Maiti , S Tarafdar

Sterols have been ascribed a major role in the organization of biological membranes, in particular for the formation of liquid ordered domains in complex lipid mixtures. Here, we employed molecular dynamics simulations to compare the…

Biological Physics · Physics 2021-07-13 Azadeh Alavizargar , Fabian Keller , R. Wedlich-Söldner , Andreas Heuer

Antimicrobial resistance (AMR) poses a significant threat to public health by increasing mortality, extending hospital stays, and increasing healthcare costs. It affects people of all ages and affects health services, veterinary medicine,…

Dynamical Systems · Mathematics 2023-06-12 Alissen Peterson , Jhoana P. Romero-Leiton , Pablo Aguirre , Kamal R. Acharya , Bouchra Nasri

The need to develop new methods for the high-sensitivity diagnosis of malaria has initiated a global activity in medical and interdisciplinary sciences. Most of the diverse variety of emerging techniques are based on research-grade…

Swimming organisms in their natural habitat navigate through a wide array of geometries and chemical environments. Interaction with the boundaries is ubiquitous and can significantly modify the swimming characteristics of the organism as…

Fluid Dynamics · Physics 2010-12-23 Saikat Jana , Soong Ho Um , Sunghwan Jung

Giardia lamblia is a flagellate intestinal protozoan with global distribution causing the disease known as giardiasis. This parasite is responsable for 35.1% of outbreaks of diarrhea caused by contaminated water which and mainly affects…

Optimization and Control · Mathematics 2024-08-23 Victor Hugo Pereira Rodrigues , Maria Fantinatti , Tiago Roux Oliveira , Wilton dos Santos Freitas

This paper investigates the deterministic extinction and permanence of a family of SEIRS malaria models with multiple random delays, and with a general nonlinear incidence rate. The conditions for the extinction and permanence of the…

Populations and Evolution · Quantitative Biology 2020-05-05 Divine Wanduku , Broderick Oluyede
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