Results 51 to 60 of about 742,756 (306)

The Pathophysiology of Chronic Constipation

open access: yesCanadian Journal of Gastroenterology, 2011
Constipation is broadly defined as an unsatisfactory defecation characterized by infrequent stools, difficult stool passage or both. The common approach to the pathophysiology of constipation groups the disorder into primary and secondary causes. Primary
Christopher N Andrews, Martin Storr
doaj   +1 more source

Mechanics and polarity in cell motility [PDF]

open access: yes, 2016
The motility of a fish keratocyte on a flat substrate exhibits two distinct regimes: the non-migrating and the migrating one. In both configurations the shape is fixed in time and, when the cell is moving, the velocity is constant in magnitude and ...
Ambrosi, Davide, Zanzottera, Anna
core   +2 more sources

4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase in malaria parasites and enhances atovaquone efficacy

open access: yesFEBS Letters, EarlyView.
Atovaquone is an antimalarial requiring potentiation for sufficient efficacy. We pursued strategies to enhance its activity, showing that 4‐nitrobenzoate inhibits 4‐hydroxybenzoate polyprenyltransferase, decreasing ubiquinone biosynthesis. Since atovaquone competes with ubiquinol in mitochondria, 4‐nitrobenzoate facilitates its action, potentiating ...
Ignasi Bofill Verdaguer   +7 more
wiley   +1 more source

Normal Pursuit-System Limitations— First Discovered in Infantile Nystagmus Syndrome

open access: yesJournal of Eye Movement Research, 2013
Infantile nystagmus syndrome (INS) patients occasionally have impaired pursuit. Model and patient data identified relative timing between target motion initiation and INS-waveform saccades as the cause. We used a new stimulus, the “step-pause-ramp” (SPR),
Louis F. Dell’Osso, Jonathan B. Jacobs
doaj   +1 more source

Syntaphilin Ubiquitination Regulates Mitochondrial Dynamics and Tumor Cell Movements. [PDF]

open access: yes, 2018
Syntaphilin (SNPH) inhibits the movement of mitochondria in tumor cells, preventing their accumulation at the cortical cytoskeleton and limiting the bioenergetics of cell motility and invasion. Although this may suppress metastasis, the regulation of the
Agarwal, Ekta   +11 more
core   +1 more source

Linked dimers of the AAA+ ATPase Msp1 reveal energetic demands and mechanistic plasticity for substrate extraction from lipid bilayers

open access: yesFEBS Letters, EarlyView.
Cells must clear mislocalized or faulty proteins from membranes to survive. The AAA+ ATPase Msp1 performs this task, but dissecting how its six subunits work together is challenging. We engineered linked dimers with varied numbers of functional subunits to reveal how Msp1 subunits cooperate and use energy to extract proteins from the lipid bilayer ...
Deepika Gaur   +5 more
wiley   +1 more source

Correlations between the clinical characteristics of diabetic trochlear nerve palsy and diplopia severity

open access: yesBMC Ophthalmology
Importance Few literatures reported the clinical characteristics of diabetic trochlear nerve palsy, including demographic characteristics, involvement between both eyes, time of symptom onset, duration of diabetes, etc. Whether there is relevance between
Zhaowen Xue   +5 more
doaj   +1 more source

P-27 CELLULAR EFFECTS OF IN VITRO LIPID OVERLOAD ON HEPATIC STELLATE CELLS AND HEPATOCYTES.

open access: yesAnnals of Hepatology, 2023
Introduction and Objectives: Hepatic cells undergo different processes in response to the steatogenic input of MAFLD. Hepatic cell culture in steatogenic medium is a useful, reproducible tool intended to elucidate these pathogenic mechanisms.
Adriana Campos-Espinosa   +3 more
doaj   +1 more source

How bacterial cells and colonies move on solid substrates

open access: yes, 2019
Many bacteria rely on active cell appendages, such as type IV pili, to move over substrates and interact with neighboring cells. Here, we study the motion of individual cells and bacterial colonies, mediated by the collective interactions of multiple ...
Pönisch, Wolfram   +2 more
core   +1 more source

Reciprocal control of viral infection and phosphoinositide dynamics

open access: yesFEBS Letters, EarlyView.
Phosphoinositides, although scarce, regulate key cellular processes, including membrane dynamics and signaling. Viruses exploit these lipids to support their entry, replication, assembly, and egress. The central role of phosphoinositides in infection highlights phosphoinositide metabolism as a promising antiviral target.
Marie Déborah Bancilhon, Bruno Mesmin
wiley   +1 more source

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