Results 61 to 70 of about 186,921 (280)

Revealing the structure of land plant photosystem II: the journey from negative‐stain EM to cryo‐EM

FEBS Letters, EarlyView.
Advances in cryo‐EM have revealed the detailed structure of Photosystem II, a key protein complex driving photosynthesis. This review traces the journey from early low‐resolution images to high‐resolution models, highlighting how these discoveries deepen our understanding of light harvesting and energy conversion in plants.
Roman Kouřil
wiley   +1 more source

Therapeutic approaches with intravitreal injections in geographic atrophy secondary to age-related macular degeneration: current drugs and potential molecules [PDF]

, 2019
The present review focuses on recent clinical trials that analyze the efficacy of intravitreal therapeutic agents for the treatment of dry age-related macular degeneration (AMD), such as neuroprotective drugs, and complement inhibitors, also called ...
Cerini, Alberto, Greco A., La Cava M, Lambiase A, Limoli PG, Nebbioso M   +5 more
core   +1 more source

Chimeric Proteins Containing MAP-1 and Functional Domains of C4b-Binding Protein Reveal Strong Complement Inhibitory Capacities

Frontiers in Immunology, 2018
The complement system is a tightly regulated network of proteins involved in defense against pathogens, inflammatory processes, and coordination of the innate and adaptive immune responses.
Cecilie E. Hertz, Rafael Bayarri-Olmos, Nikolaj Kirketerp-Møller, Sander van Putten, Katrine Pilely, Mikkel-Ole Skjoedt, Peter Garred   +6 more
doaj   +1 more source

Characterization of Complement Activity in Turkeys: Evidence for Classical and Alternative Complement Pathways

Poultry Science, 1989
Complement activity in turkey serum was examined by using inhibitors or activators of mammalian complement. Hemolytic test systems using sheep red blood cells sensitized with specific antibody (SSRBC) and horse red blood cells (HRBC) were developed to measure residual complement activity of turkey sera treated with the various inhibitors or activators.
Ellis, M. G., Lamont, Susan, Arp, L. H.
openaire   +3 more sources

Interplay between circadian and other transcription factors—Implications for cycling transcriptome reprogramming

FEBS Letters, EarlyView.
This perspective highlights emerging insights into how the circadian transcription factor CLOCK:BMAL1 regulates chromatin architecture, cooperates with other transcription factors, and coordinates enhancer dynamics. We propose an updated framework for how circadian transcription factors operate within dynamic and multifactorial chromatin landscapes ...
Xinyu Y. Nie, Jerome S. Menet
wiley   +1 more source

Protein pyrophosphorylation by inositol pyrophosphates — detection, function, and regulation

FEBS Letters, EarlyView.
Protein pyrophosphorylation is an unusual signaling mechanism that was discovered two decades ago. It can be driven by inositol pyrophosphate messengers and influences various cellular processes. Herein, we summarize the research progress and challenges of this field, covering pathways found to be regulated by this posttranslational modification as ...
Sarah Lampe, Tanmay Kumar Mohanty, Rashna Bhandari, Dorothea Fiedler   +3 more
wiley   +1 more source

Menopause leads to elevated expression of macrophage-associated genes in the aging frontal cortex: rat and human studies identify strikingly similar changes. [PDF]

, 2012
BACKGROUND The intricate interactions between the immune, endocrine and central nervous systems shape the innate immune response of the brain. We have previously shown that estradiol suppresses expression of immune genes in the frontal cortex of ...
Carl Cotman, Erik Hrabovszky, Imre Kalló, István Likó, Miklós Sárvári, Nicole Berchtold, Norbert Solymosi, Sárvári, Miklós, Zsolt Liposits   +8 more
core   +2 more sources

Effect of Moderate Aerobic Exercise on Complement Activation Pathways in Polycystic Ovary Syndrome Women

Frontiers in Endocrinology, 2022
BackgroundThe complement system is pivotal in host defense mechanisms, protecting against pathogenic infection by regulating inflammation and cell immunity.
Manjunath Ramanjaneya, Ibrahem Abdalhakam, Ilham Bettahi, Milin Bensila, Jayakumar Jerobin, Myint Myint Aye, Meis Alkasem, Thozhukat Sathyapalan, Stephen Lawrence Atkin, Abdul-Badi Abou-Samra   +9 more
doaj   +1 more source

Classical Complement Pathway Activation in the Kidneys of Women With Preeclampsia [PDF]

Hypertension, 2015
A growing body of evidence suggests that complement dysregulation plays a role in the pathogenesis of preeclampsia. The kidney is one of the major organs affected in preeclampsia. Because the kidney is highly susceptible to complement activation, we hypothesized that preeclampsia is associated with renal complement activation. We performed a nationwide
Penning, M., Chua, J.S., Kooten, C. van, Zandbergen, M., Buurma, A., Schutte, J., Bruijn, J.A., Khankin, E.V., Bloemenkamp, K., Karumanchi, S.A., Baelde, H.   +10 more
openaire   +4 more sources

Time after time – circadian clocks through the lens of oscillator theory

FEBS Letters, EarlyView.
Oscillator theory bridges physics and circadian biology. Damped oscillators require external drivers, while limit cycles emerge from delayed feedback and nonlinearities. Coupling enables tissue‐level coherence, and entrainment aligns internal clocks with environmental cues.
Marta del Olmo, Carolin Ector, Hanspeter Herzel   +2 more
wiley   +1 more source