From Analysis:
Microglia-astrocyte crosstalk amplification loops in neurodegeneration
Microglia activate astrocytes via IL-1alpha/TNF/C1q, and reactive astrocytes feed back to microglia via complement/chemokines.
These hypotheses emerged from the same multi-agent debate that produced this hypothesis.
Molecular Mechanism and Rationale
The quantum coherence disruption hypothesis proposes that neurodegeneration results from interference with quantum coherent networks that facilitate long-range cellular communication within neural tissues. At the molecular level, this mechanism centers on the microtubule protein TUBB3 (β-tubulin III), which forms the structural backbone of microtubules in neuronal cells. TUBB3 differs from other tubulin isoforms through its unique C-terminal domain and specific post-translational modifications that create distinct electrostatic properties essential for quantum coherence maintenance.
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One of the defining pathological features of Alzheimer disease (AD) is the intraneuronal accumulation of tau. The tau that forms these accumulations is altered both posttranslationally and conformationally, and there is now significant evidence that soluble forms of these modified tau species are the toxic entities rather than the insoluble neurofibrillary tangles. However there is still noteworthy debate concerning which specific pathological forms of tau are the contributors to neuronal dysfunction and death in AD. Given that increases in aberrant forms of tau play a role in the neurodegeneration process in AD, there is growing interest in understanding the degradative pathways that remove tau from the cell, and the selectivity of these different pathways for various forms of tau. Indeed, one can speculate that deficits in a pathway that selectively removes certain pathological forms of tau could play a pivotal role in AD. In this review we will discuss the different proteolytic and
Photosynthetic complexes are exquisitely tuned to capture solar light efficiently, and then transmit the excitation energy to reaction centres, where long term energy storage is initiated. The energy transfer mechanism is often described by semiclassical models that invoke 'hopping' of excited-state populations along discrete energy levels. Two-dimensional Fourier transform electronic spectroscopy has mapped these energy levels and their coupling in the Fenna-Matthews-Olson (FMO) bacteriochlorophyll complex, which is found in green sulphur bacteria and acts as an energy 'wire' connecting a large peripheral light-harvesting antenna, the chlorosome, to the reaction centre. The spectroscopic data clearly document the dependence of the dominant energy transport pathways on the spatial properties of the excited-state wavefunctions of the whole bacteriochlorophyll complex. But the intricate dynamics of quantum coherence, which has no classical analogue, was largely neglected in the analyses-
Cardiomyocyte contraction and relaxation are controlled by Ca(2+) handling, which can be regulated to meet demand. Indeed, major reduction in sarcoplasmic reticulum (SR) function in mice with Serca2 knockout (KO) is compensated by enhanced plasmalemmal Ca(2+) fluxes. Here we investigate whether altered Ca(2+) fluxes are facilitated by reorganization of cardiomyocyte ultrastructure. Hearts were fixed for electron microscopy and enzymatically dissociated for confocal microscopy and electrophysiology. SR relative surface area and volume densities were reduced by 63% and 76%, indicating marked loss and collapse of the free SR in KO. Although overall cardiomyocyte dimensions were unaltered, total surface area was increased. This resulted from increased T-tubule density, as revealed by confocal images. Fourier analysis indicated a maintained organization of transverse T-tubules but an increased presence of longitudinal T-tubules. This demonstrates a remarkable plasticity of the tubular syste
BACKGROUND: Prostate cancer is one of the most common complex diseases with high leading cause of death in men. Identifications of prostate cancer associated genes and biomarkers are thus essential as they can gain insights into the mechanisms underlying disease progression and advancing for early diagnosis and developing effective therapies. METHODS: In this study, we presented an integrative analysis of gene expression profiling and protein interaction network at a systematic level to reveal candidate disease-associated genes and biomarkers for prostate cancer progression. At first, we reconstructed the human prostate cancer protein-protein interaction network (HPC-PPIN) and the network was then integrated with the prostate cancer gene expression data to identify modules related to different phases in prostate cancer. At last, the candidate module biomarkers were validated by its predictive ability of prostate cancer progression. RESULTS: Different phases-specific modules were identi
Embryonic development involves gene networks, extracellular signaling, cell behaviors (cell division, adhesion, etc.) and mechanical interactions. How should these be coordinated to lead to complex and robust morphologies? To explore this question, we randomly wired genes and cell behaviors into a huge number of networks in EmbryoMaker. EmbryoMaker is a computational model of animal development that simulates how the 3D positions of cells, i.e. morphology, change over time due to such networks. We found that any gene network can lead to complex morphologies if this activates cell behaviors over large regions of the embryo. Importantly, however, for such complex morphologies to be robust to noise, gene networks should include cell signaling that compartmentalizes the embryo into small regions where cell behaviors are regulated differently. If, instead, cell behaviors are equally regulated over large regions, complex but non-robust morphologies arise. We explain how compartmentalization
INTRODUCTION: The beneficial effect of improving air quality on lung function in the elderly remains unclear. We examined associations between decline in air pollutants and lung function, and effect modifications by genetics and body mass index (BMI), in elderly German women. METHODS: Data were analysed from the prospective SALIA (Study on the influence of Air pollution on Lung function, Inflammation and Aging) study (n=601). Spirometry was conducted at baseline (1985-1994; age 55 years), in 2007-2010 and in 2012-2013. Air pollution concentrations at home addresses were determined for each time-point using land-use regression models. Global Lung Initiative 2012 z-scores were calculated. Weighted genetic risk scores (GRSs) were determined from lung function-related risk alleles and used to investigate interactions with improved air quality. Multiple linear mixed models were fitted. RESULTS: Air pollution levels decreased substantially during the study period. Reduction of air pollution
Mutations causing dysfunction of tubulins and microtubule-associated proteins, also known as tubulinopathies, are a group of recently described entities that lead to complex brain malformations. Anatomical and functional consequences of the disruption of tubulins include microcephaly, combined with abnormal corticogenesis due to impaired migration or lamination and abnormal growth cone dynamics of projecting and callosal axons. Key imaging features of tubulinopathies are characterized by three major patterns of malformations of cortical development (MCD): lissencephaly, microlissencephaly, and dysgyria. Additional distinctive MRI features include dysmorphism of the basal ganglia, midline commissural structure hypoplasia or agenesis, and cerebellar and brainstem hypoplasia. Tubulinopathies can be diagnosed as early as 21-24 gestational weeks using imaging and neuropathology, with possible extreme microlissencephaly with an extremely thin cortex, lissencephaly with either thick or thin/i
Retinal ganglion cell axons are heavily myelinated (98%) and myelin damage in the optic nerve (ON) severely affects vision. Understanding the molecular mechanism of oligodendrocyte progenitor cell (OPC) differentiation into mature oligodendrocytes will be essential for developing new therapeutic approaches for ON demyelinating diseases. To this end, we developed a new method for isolation and culture of ON-derived oligodendrocyte lineage cells and used it to study OPC differentiation. A critical aspect of cellular differentiation is macroautophagy/autophagy, a catabolic process that allows for cell remodeling by degradation of excess or damaged cellular molecules and organelles. Knockdown of ATG9A and BECN1 (pro-autophagic proteins involved in the early stages of autophagosome formation) led to a significant reduction in proliferation and survival of OPCs. We also found that autophagy flux (a measure of autophagic degradation activity) is significantly increased during progression of o
Sertoli cells are highly polarized testicular cells that provide a nurturing environment for germ cell development and maturation during spermatogenesis. The class III phosphatidylinositol 3-kinase (PtdIns3K) plays core roles in macroautophagy in various cell types; however, its role in Sertoli cells remains unclear. Here, we generated a mouse line in which the gene encoding the catalytic subunit, Pik3c3, was specifically deleted in Sertoli cells (cKO) and found that after one round of normal spermatogenesis, the cKO mice quickly became infertile and showed disruption of Sertoli cell polarity and impaired spermiogenesis. Subsequent proteomics and phosphoproteomics analyses enriched the F-actin cytoskeleton network involved in the disorganized Sertoli-cell structure in cKO testis which we identified a significant increase of the F-actin negative regulator SCIN (scinderin) and the reduced phosphorylation of HDAC6, an α-tubulin deacetylase. Our results further demonstrated that the accumu
Parkinson disease (PD) is an age-related neurodegenerative disorder associated with misfolded SNCA/α-synuclein accumulation in brain. Impaired catabolism of SNCA potentiates formation of its toxic oligomers. LRRK2 (leucine-rich repeat kinase-2) mutations predispose to familial and sporadic PD. Mutant LRRK2 perturbs chaperone-mediated-autophagy (CMA) to degrade SNCA. We showed greater age-dependent accumulation of oligomeric SNCA in striatum and cortex of aged LRRK2R1441G knockin (KI) mice, compared to age-matched wildtype (WT) by 53% and 31%, respectively. Lysosomal clustering and accumulation of CMA-specific LAMP2A and HSPA8/HSC70 proteins were observed in aged mutant striatum along with increased GAPDH (CMA substrate) by immunohistochemistry of dorsal striatum and flow cytometry of ventral midbrain cells. Using our new reporter protein clearance assay, mutant mouse embryonic fibroblasts (MEFs) expressing either SNCA or CMA recognition 'KFERQ'-like motif conjugated with photoactivated
Microtubule proteins form a dynamic component of the cytoskeleton, and play key roles in cellular processes, such as vesicular transport, cell motility and mitosis. Expression of microtubule proteins are often dysregulated in cancer. In particular, the microtubule protein βIII-tubulin, encoded by the TUBB3 gene, is aberrantly expressed in a range of epithelial tumours and is associated with drug resistance and aggressive disease. In normal cells, TUBB3 expression is tightly restricted, and is found almost exclusively in neuronal and testicular tissues. Understanding the mechanisms that control TUBB3 expression, both in cancer, mature and developing tissues will help to unravel the basic biology of the protein, its role in cancer, and may ultimately lead to the development of new therapeutic approaches to target this protein. This review is devoted to the transcriptional and posttranscriptional regulation of TUBB3 in normal and cancerous tissue.
Chronic myeloid leukemia (CML) is an acquired neoplastic hematopoietic stem cell (HSC) disorder characterized by the expression of the BCR-ABL oncoprotein. This gene product is necessary and sufficient to explain the chronic phase of CML. The only known cause of CML is radiation exposure leading to a mutation of at least one HSC, although the vast majority of patients with CML do not have a history of radiation exposure. Nonetheless, in humans, significant radiation exposure (after exposure to atomic bomb fallout) leads to disease diagnosis in 3-5 years. In murine models, disease dynamics are much faster and CML is fatal over the span of a few months. Our objective is to develop a model that accounts for CML across all mammals. In the following, we combine a model of CML dynamics in humans with allometric scaling of hematopoiesis across mammals to illustrate the natural history of chronic phase CML in various mammals. We show how a single cell can lead to a fatal illness in mice and hu
Voltage-gated Ca(2+) (CaV) channels are transmembrane proteins primarily formed by an ion-conducting α 1 subunit that can associate with auxiliary β and α2δ subunits. Ca(2+) entering the cell through these channels serves as a versatile second messenger of electrical signaling, initiating numerous different cellular processes ranging from gene expression to cell fertilization, neuronal transmission and cell death. CaV channels, as other ion channels, are targets for numerous ligands including naturally occurring peptide toxins. Some of these peptide toxins are invaluable tools for studying their structure and function and have potential therapeutic applications. Here, we present an overview of the current knowledge regarding the structure and function of CaV channels as well as their role in human disease, and highlight some of the growing applications of peptide toxins targeting CaV channels. Analysis and understanding of the molecular strategy used by these peptide toxins might
The following fictional case is intended as a learning tool within the Pathology Competencies for Medical Education (PCME), a set of national standards for teaching pathology. These are divided into three basic competencies: Disease Mechanisms and Processes, Organ System Pathology, and Diagnostic Medicine and Therapeutic Pathology. For additional information, and a full list of learning objectives for all three competencies, see http://journals.sagepub.com/doi/10.1177/2374289517715040.
AIM: To present the ICS Teaching Module on ambulatory urodynamics monitoring (AUM). METHODS: This teaching module has been developed by the ICS Urodynamics Committee to assist ICS members in their routine clinical practice. A detailed literature search on studies published on the clinical role of AUM as well as expert opinions have been considered. A slide set on AUM has been developed, approved by all members of the ICS Urodynamics Committee and is available to the ICS membership on the ICS website. The final approved teaching module has been presented at the ICS Annual Scientific Meeting in Brazil 2014. RESULTS: The scientific evidence on the clinical role of AUM in patients with lower urinary tract symptoms is summarized. The catheters and recording systems used, the patient preparation for the test, the technique, the instructions to the patient, the analysis, interpretation, and quality control assessment of AUM trace as well as the contraindications for AUM are described. CONCLUS
Contributions of glial cells to neuroenergetics have been the focus of extensive debate. Here we provide positron emission tomography evidence that activation of astrocytic glutamate transport via the excitatory amino acid transporter GLT-1 triggers widespread but graded glucose uptake in the rodent brain. Our results highlight the need for a reevaluation of the interpretation of [18F]FDG positron emission tomography data, whereby astrocytes would be recognized as contributing to the [18F]FDG signal.
Parkinson's disease (PD) is the second most common progressive neurodegenerative disorder, characterized by both motor and non-motor symptoms. In this study, we conducted a meta-analysis of gene expression profiles from four GEO datasets (comprising 59 PD patients and 41 participants control) to identify consistently differentially expressed messenger ribonucleic acids (DEmRNAs). We identified 5,495 down-regulated and 9,850 up-regulated DEmRNAs, of which 64 and 25, respectively, were common across all datasets. Functional enrichment analysis revealed that down-regulated DEmRNAs were primarily enriched in pathways related to neurotransmitter transport, dopamine biosynthesis, and dopaminergic synapse function, while up-regulated DEmRNAs were linked to cell cycle regulation and PI3K-Akt signaling. Notably, dysregulation of key genes, including SNCA (encodingα-synuclein), SLC6A3, TUBB, TUBB3, TUBB4B, and NDUFA9, were associated with PD as well as other neurodegenerative disorders, such as
Title: Circadian Desynchronization Therapy to Break Microglia-Astrocyte Feedback Loops
Description: Microglia and astrocytes exhibit distinct circadian rhythms in their inflammatory responses, with microglia peaking during rest phases and astrocytes during active phases. Therapeutic manipulation of circadian clock genes (particularly CLOCK and BMAL1) could temporally decouple their crosstalk, preventing sustained amplification loops by ensuring t
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| Event | Price | Change | Source | Time | |
|---|---|---|---|---|---|
| 📄 | New Evidence | $0.367 | ▲ 2.8% | evidence_batch_update | 2026-04-13 02:18 |
| 📄 | New Evidence | $0.357 | ▲ 6.3% | evidence_batch_update | 2026-04-13 02:18 |
| ⚖ | Recalibrated | $0.336 | ▼ 0.5% | 2026-04-12 10:15 | |
| ⚖ | Recalibrated | $0.338 | ▼ 1.6% | 2026-04-10 15:58 | |
| ⚖ | Recalibrated | $0.343 | ▲ 1.9% | 2026-04-10 15:53 | |
| ⚖ | Recalibrated | $0.337 | ▲ 3.1% | 2026-04-08 18:39 | |
| ⚖ | Recalibrated | $0.326 | ▲ 0.7% | 2026-04-06 04:04 | |
| ⚖ | Recalibrated | $0.324 | ▼ 1.0% | 2026-04-04 16:38 | |
| ⚖ | Recalibrated | $0.328 | ▼ 3.3% | 2026-04-04 16:02 | |
| 📄 | New Evidence | $0.339 | ▲ 3.9% | evidence_batch_update | 2026-04-04 09:08 |
| ⚖ | Recalibrated | $0.326 | ▲ 11.6% | 2026-04-03 23:46 | |
| ⚖ | Recalibrated | $0.292 | ▼ 16.2% | market_dynamics | 2026-04-03 01:06 |
| ⚖ | Recalibrated | $0.348 | ▲ 2.5% | 2026-04-02 21:55 | |
| ⚖ | Recalibrated | $0.340 | ▼ 10.0% | market_recalibrate | 2026-04-02 19:14 |
| 📄 | New Evidence | $0.378 | ▲ 4.5% | market_dynamics | 2026-04-02 17:18 |
Molecular pathway showing key causal relationships underlying this hypothesis
graph TD
BMAL1["BMAL1"] -->|co discussed| TUBB3["TUBB3"]
CNO["CNO"] -->|co discussed| TUBB3_1["TUBB3"]
TUBB3_2["TUBB3"] -->|co discussed| CLOCK["CLOCK"]
TUBB3_3["TUBB3"] -->|co discussed| PLIN2["PLIN2"]
TUBB3_4["TUBB3"] -->|co discussed| PIEZO1["PIEZO1"]
TUBB3_5["TUBB3"] -->|co discussed| GABRA1["GABRA1"]
TUBB3_6["TUBB3"] -->|co discussed| G3BP1["G3BP1"]
PLIN2_7["PLIN2"] -->|co discussed| TUBB3_8["TUBB3"]
G3BP1_9["G3BP1"] -->|co discussed| TUBB3_10["TUBB3"]
TUBB3_11["TUBB3"] -->|co discussed| BMAL1_12["BMAL1"]
TUBB3_13["TUBB3"] -->|co discussed| CNO_14["CNO"]
GABRA1_15["GABRA1"] -->|co discussed| TUBB3_16["TUBB3"]
PIEZO1_17["PIEZO1"] -->|co discussed| TUBB3_18["TUBB3"]
CLOCK_19["CLOCK"] -->|co discussed| TUBB3_20["TUBB3"]
CLOCK_21["CLOCK"] -->|co associated with| TUBB3_22["TUBB3"]
style BMAL1 fill:#ce93d8,stroke:#333,color:#000
style TUBB3 fill:#ce93d8,stroke:#333,color:#000
style CNO fill:#ce93d8,stroke:#333,color:#000
style TUBB3_1 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_2 fill:#ce93d8,stroke:#333,color:#000
style CLOCK fill:#ce93d8,stroke:#333,color:#000
style TUBB3_3 fill:#ce93d8,stroke:#333,color:#000
style PLIN2 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_4 fill:#ce93d8,stroke:#333,color:#000
style PIEZO1 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_5 fill:#ce93d8,stroke:#333,color:#000
style GABRA1 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_6 fill:#ce93d8,stroke:#333,color:#000
style G3BP1 fill:#ce93d8,stroke:#333,color:#000
style PLIN2_7 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_8 fill:#ce93d8,stroke:#333,color:#000
style G3BP1_9 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_10 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_11 fill:#ce93d8,stroke:#333,color:#000
style BMAL1_12 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_13 fill:#ce93d8,stroke:#333,color:#000
style CNO_14 fill:#ce93d8,stroke:#333,color:#000
style GABRA1_15 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_16 fill:#ce93d8,stroke:#333,color:#000
style PIEZO1_17 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_18 fill:#ce93d8,stroke:#333,color:#000
style CLOCK_19 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_20 fill:#ce93d8,stroke:#333,color:#000
style CLOCK_21 fill:#ce93d8,stroke:#333,color:#000
style TUBB3_22 fill:#ce93d8,stroke:#333,color:#000
neurodegeneration | 2026-04-01 | completed