Results 91 to 100 of about 10,167,326 (383)

CD8 T Cell Exhaustion During Chronic Viral Infection and Cancer.

open access: yesAnnual Review of Immunology, 2019
Exhausted CD8 T (Tex) cells are a distinct cell lineage that arise during chronic infections and cancers in animal models and humans. Tex cells are characterized by progressive loss of effector functions, high and sustained inhibitory receptor expression,
Laura M. McLane   +2 more
semanticscholar   +1 more source

A stepwise emergence of evolution in the RNA world

open access: yesFEBS Letters, EarlyView.
How did biological evolution emerge from chemical reactions? This perspective proposes a gradual scenario of self‐organization among RNA molecules, where catalytic feedback on random mixtures plays the central role. Short oligomers cross‐ligate, and self‐assembly enables heritable variations. An event of template‐externalization marks the transition to
Philippe Nghe
wiley   +1 more source

Why Is Chronic Lyme Borreliosis Chronic? [PDF]

open access: yesClinical Infectious Diseases, 1997
Chronic Lyme borreliosis (CLB) can present not only in different organs but also in different patterns. Although many theories exist about the mechanisms leading to CLB, it is known that viable Borrelia burgdorferi can persist for decades and cause late skin manifestations of acrodermatitis chronica atrophicans (ACA).
Elisabeth Aberer   +2 more
openaire   +3 more sources

Workplace Wellness Programs: Are They Part of the Answer to the U.S.’s Growing Healthcare Crisis? [PDF]

open access: yes, 2014
[Excerpt] Of the $2.8 trillion that the United States has spent on healthcare in recent years, the majority of it (75%) is spent treating chronic disease.
Grillo, Maria C
core   +1 more source

An Italian Expert Consensus on the Use of Opioids for the Management of Chronic Non-Oncological Pain in Clinical Practice: Focus on Buprenorphine.

open access: yesJournal of Pain Research, 2021
Consalvo Mattia,1,2 Livio Luongo,3,4 Massimo Innamorato,5 Luca Melis,6 Michele Sofia,7 Lucia Zappi,8 Filomena Puntillo9,10 1Department of Medical and Surgical Sciences and Biotechnologies, Faculty of Pharmacy and Medicine, “Sapienza” University of Rome ...
Mattia C   +6 more
doaj  

The nature of small-airway obstruction in chronic obstructive pulmonary disease.

open access: yesNew England Journal of Medicine, 2004
BACKGROUND Chronic obstructive pulmonary disease (COPD) is a major public health problem associated with long-term exposure to toxic gases and particles. We examined the evolution of the pathological effects of airway obstruction in patients with COPD.
J. Hogg   +10 more
semanticscholar   +1 more source

The carboxylate “gripper” of the substrate is critical for C‐4 stereo‐inversion by UDP‐glucuronic acid 4‐epimerase

open access: yesFEBS Letters, EarlyView.
UDP‐glucuronic acid 4‐epimerase (UGAepi) catalyzes NAD+‐dependent interconversion of UDP‐glucuronic acid (UDP‐GlcA) and UDP‐galacturonic acid (UDP‐GalA) via C4‐oxidation, 4‐keto‐intermediate rotation, and C4‐reduction. Here, Borg et al. examined the role of the substrate's carboxylate group in the enzymic mechanism by analyzing NADH‐dependent reduction
Annika J. E. Borg   +2 more
wiley   +1 more source

Cardiac-resynchronization therapy with or without an implantable defibrillator in advanced chronic heart failure.

open access: yesNew England Journal of Medicine, 2004
BACKGROUND We tested the hypothesis that prophylactic cardiac-resynchronization therapy in the form of biventricular stimulation with a pacemaker with or without a defibrillator would reduce the risk of death and hospitalization among patients with ...
M. Bristow   +11 more
semanticscholar   +1 more source

B cell mechanobiology in health and disease: emerging techniques and insights into therapeutic responses

open access: yesFEBS Letters, EarlyView.
B cells sense external mechanical forces and convert them into biochemical signals through mechanotransduction. Understanding how malignant B cells respond to physical stimuli represents a groundbreaking area of research. This review examines the key mechano‐related molecules and pathways in B lymphocytes, highlights the most relevant techniques to ...
Marta Sampietro   +2 more
wiley   +1 more source

Evolutionary interplay between viruses and R‐loops

open access: yesFEBS Letters, EarlyView.
Viruses interact with specialized nucleic acid structures called R‐loops to influence host transcription, epigenetic states, latency, and immune evasion. This Perspective examines the roles of R‐loops in viral replication, integration, and silencing, and how viruses co‐opt or avoid these structures.
Zsolt Karányi   +4 more
wiley   +1 more source

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