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Diminished ovarian reserve (DOR) is a physiological or pathological condition that progresses in an age-dependent manner, which is characterized by impaired ovarian follicle quality, decreased anti-Müllerian hormone levels, elevated follicle-stimulating hormone levels, and reduced antral follicle counts. Oxidative stress (OS) is one of the culprits of DOR. By imposing OS damage on various kinds of ovarian cells including granulosa cells, OS can result in ovarian hypofunction and eventually lead to female infertility. However, the underlying mechanisms have not been fully elucidated yet. In this study, HIGD1A, a mitochondrial inner membrane component, is found to be downregulated in granulosa cells upon OS exposure. By systematically studying the role of HIGD1A in regulating granulosa cell and ovarian functions as well as its corresponding mechanisms, a novel regulatory mechanism underlying OS-related female infertility is revealed, and provided a potential molecular target for anti-OS therapies.
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http://dx.doi.org/10.1002/advs.202503828 | DOI Listing |
Plant Dis
September 2025
Shenyang Agricultural University, College of Plant Protection, Nematology Institute of Northern China, Shenyang, China;
Root-knot nematodes (Meloidogyne spp.) cause catastrophic yield losses in global agriculture. This study identified itaconic acid (IA), through comparative metabolomic analysis (the study of small molecules in biological systems), as a key virulence-related metabolite produced by the fungus Trichoderma citrinoviride Snef1910.
View Article and Find Full Text PDFAnim Sci J
January 2025
Department of Animal Science, Bangladesh Agricultural University, Mymensingh, Bangladesh.
This study investigates the effects of L-carnitine on nuclear maturation and fertilization in cattle and goat oocytes. Ovaries were collected from females with poor reproductive efficiency in the tropical climate, and cumulus-oocyte complexes (COCs) were retrieved from large antral follicles. COCs were cultured with varying concentrations of L-carnitine (0, 0.
View Article and Find Full Text PDFCell Commun Signal
September 2025
Department of Cytology, Institute of Anatomy, Medical Faculty, Ruhr-University Bochum, Universitätsstr. 150, Building MA 5/52, Bochum, 44801, Germany.
Background: Amyotrophic lateral sclerosis (ALS) is a devastating neurodegenerative disease characterized by oxidative stress and progressive motor neuron degeneration. This study evaluates the potential neuroprotective effects of caffeine in the Wobbler mouse, an established model of ALS.
Methods: Wobbler mice received caffeine supplementation (60 mg/kg/day) via drinking water, and key parameters, including muscle strength, NAD metabolism, oxidative stress, and motor neuron morphology, were assessed at critical disease stages.
Nature
September 2025
Marc and Jennifer Lipschultz Precision Immunology Institute, Icahn School of Medicine at Mount Sinai, New York, NY, USA.
Monocyte-derived macrophages (mo-macs) often drive immunosuppression in the tumour microenvironment (TME) and tumour-enhanced myelopoiesis in the bone marrow fuels these populations. Here we performed paired transcriptome and chromatin accessibility analysis over the continuum of myeloid progenitors, circulating monocytes and tumour-infiltrating mo-macs in mice and in patients with lung cancer to identify myeloid progenitor programs that fuel pro-tumorigenic mo-macs. We show that lung tumours prime accessibility for Nfe2l2 (NRF2) in bone marrow myeloid progenitors as a cytoprotective response to oxidative stress, enhancing myelopoiesis while dampening interferon response and promoting immunosuppression.
View Article and Find Full Text PDFNature
September 2025
Picower Institute for Learning and Memory, Massachusetts Institute of Technology, Cambridge, MA, USA.
Loss-of-function variants in the lipid transporter ABCA7 substantially increase the risk of Alzheimer's disease, yet how they impact cellular states to drive disease remains unclear. Here, using single-nucleus RNA-sequencing analysis of human brain samples, we identified widespread gene expression changes across multiple neural cell types associated with rare ABCA7 loss-of-function variants. Excitatory neurons, which expressed the highest levels of ABCA7, showed disrupted lipid metabolism, mitochondrial function, DNA repair and synaptic signalling pathways.
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