Metabolites and Metabolic Functional Changes-Potential Markers for Endothelial Cell Senescence.

Accumulation of senescent endothelial cells (ECs) in vasculature represents a key step in the development of vascular aging and ensuing age-related diseases. Given that removal of senescent ECs may prevent disease and improve health and wellbeing, the discovery of novel biomarkers that effectively identify senescent cells is of particular importance. As crucial elements for biological pathways and reliable bioindicators of cellular processes, metabolites demand attention in this context.

Senolytics and Senomorphics Targeting p38MAPK/NF-κB Pathway Protect Endothelial Cells from Oxidative Stress-Mediated Premature Senescence.

Oxidative stress is a prominent causal factor in the premature senescence of microvascular endothelial cells and the ensuing blood-brain barrier (BBB) dysfunction. Through the exposure of an in vitro model of human BBB, composed of brain microvascular endothelial cells (BMECs), astrocytes, and pericytes to HO, this study examined whether a specific targeting of the p38MAPK/NF-κB pathway and/or senescent cells could delay oxidative stress-mediated EC senescence and protect the BBB. Enlarged BMECs, displaying higher β-galactosidase activity, γH2AX staining, p16 expression, and impaired tubulogenic capacity, were regarded as senescent.

Advancing stroke therapy: innovative approaches with stem cell-derived extracellular vesicles.

Stroke is a leading cause of mortality and long-term disability globally, with acute ischemic stroke (AIS) being the most common subtype. Despite significant advances in reperfusion therapies, their limited time window and associated risks underscore the necessity for novel treatment strategies. Stem cell-derived extracellular vesicles (EVs) have emerged as a promising therapeutic approach due to their ability to modulate the post-stroke microenvironment and facilitate neuroprotection and neurorestoration.

A Biocompatible Hydrogen-Bonded Organic Framework (HOF) as Sonosensitizer and Artificial Enzyme for In-Depth Treatment of Alzheimer's Disease.

Current phototherapeutic approaches for Alzheimer's disease (AD) exhibit restricted clinical outcomes due to the limited physical penetration and comprised brain microenvironment of noninvasive nanomedicine. Herein, a hydrogen-bonded organic framework (HOF) based sonosensitizer is designed and synthesized. Mn-TCPP, a planar molecule where Mn ion is chelated in the core with a large p-conjugated system and 4 carboxylate acid groups, has been successfully used as building blocks to construct an ultrasound-sensitive HOF (USI-MHOF), which can go deep in the brain of AD animal models.

Naringenin enhances the efficacy of ferroptosis inducers by attenuating aerobic glycolysis by activating the AMPK-PGC1α signalling axis in liver cancer.

Liver cancer is a heterogeneous disease characterized by poor responses to standard therapies and therefore unfavourable clinical outcomes. Understanding the characteristics of liver cancer and developing novel therapeutic strategies are imperative. Ferroptosis, a type of programmed cell death induced by lipid peroxidation, has emerged as a potential target for treatment.

Hyperglycaemia perturbs blood-brain barrier integrity through its effects on endothelial cell characteristics and function.

Breakdown of blood-brain barrier (BBB) represents a key pathology in hyperglycemia-mediated cerebrovascular damage after an ischemic stroke. As changes in the level and nature of vasoactive agents released by endothelial cells (ECs) may contribute to BBB dysfunction, this study first explored the specific impact of hyperglycemia on EC characteristics and secretome. It then assessed whether secretome obtained from ECs subjected to normoglycaemia or hyperglycemia might regulate pericytic cytokine profile differently.

The Role of Stem Cells as Therapeutics for Ischaemic Stroke.

Stroke remains one of the leading causes of death and disability worldwide. Current reperfusion treatments for ischaemic stroke are limited due to their narrow therapeutic window in rescuing ischaemic penumbra. Stem cell therapy offers a promising alternative.

 (Ericaceae), a new species from Yunnan, China.

(Ericaceae), a new species from Fugong County of Yunnan Province, China is described and illustrated. This new species belongs to Vacciniumsect.Calcicolus and is most similar to , but differs in its branches hanging down, much smaller leaf blades, shorter inflorescences and pedicels, non-glandular tomentellate or densely pubescent inflorescence rachis and pedicels, densely white-pubescent hypanthium and pilose filaments.

Five new and noteworthy species of Epidendroideae (Orchidaceae) from southwestern China based on morphological and phylogenetic evidence.

Five new orchid species from southwestern China's Yunnan Province and the Tibetan Autonomous Region, , , , , and , are described and illustrated. To confirm their identities, and to resolve phylogenetic relationships, we sequenced the complete plastomes of these taxa with their congeneric species, adding new plastomes of three species, two species and nine species. Combined with published plastid sequences, our well-resolved phylogeny supported the alliance of with the the + clade.

Habitat-related plastome evolution in the mycoheterotrophic Neottia listeroides complex (Orchidaceae, Neottieae).

Background: Mycoheterotrophs, acquiring organic carbon and other nutrients from mycorrhizal fungi, have evolved repeatedly with substantial plastid genome (plastome) variations. To date, the fine-scale evolution of mycoheterotrophic plastomes at the intraspecific level is not well-characterized. A few studies have revealed unexpected plastome divergence among species complex members, possibly driven by various biotic/abiotic factors.

Zuogui and Yougui pills improve perimenopausal syndrome regulation of apoptosis in mice.

Objective: To examine, dissect, and understand the molecular mechanisms and combinatorial effects of Zuogui (, ZGP) and Yougui pills (, YGP) in 4-vinyl cyclohexene diepoxide (4-VCD)-induced Perimenopausal syndrome (PMS).

Methods: Using the 4-VCD-induced PMS mouse model, uterine and ovary index were measured, and serum sex steroidal hormone levels were evaluated after treatment with ZGP, YGP, ZGP + YGP, estradiol valerate (EV), and Gengnian An (gengnianan, GNA). Histopathological examinations, ingredient-target network predictions, western blotting, and real-time quantitative polymerase chain reaction (RT-qPCR) analyses were performed to ascertain the possible pharmacological effects and molecular mechanisms of ZYP and YGP.

DNA barcoding of Cymbidium by genome skimming: Call for next-generation nuclear barcodes.

Cymbidium is an orchid genus that has undergone rapid radiation and has high ornamental, economic, ecological and cultural importance, but its classification based on morphology is controversial. The plastid genome (plastome), as an extension of plant standard DNA barcodes, has been widely used as a potential molecular marker for identifying recently diverged species or complicated plant groups. In this study, we newly generated 237 plastomes of 50 species (at least two individuals per species) by genome skimming, covering 71.

Analysis of Risk Factors for Coronary Artery Lesion in Children with Kawasaki Disease.

Objective: To determine the frequency of coronary artery lesion (CAL) in children with Kawasaki disease (KD) and to analyse the related risk factors of CAL and the predictive value of risk factors for CAL.

Study Design: A descriptive study.

Place And Duration Of Study: Department of Pediatrics, People's Hospital of Linquan County, Anhui Province, China, from January 2019 to January 2022.

Delay of endothelial cell senescence protects cerebral barrier against age-related dysfunction: role of senolytics and senomorphics.

Accumulation of senescent cells in cerebrovasculature is thought to play an important role in age-related disruption of blood-brain barrier (BBB). Using an model of human BBB, composed of brain microvascular endothelial cells (BMECs), astrocytes and pericytes, this study explored the so-called correlative link between BMEC senescence and the BBB dysfunction in the absence or presence of functionally distinct senotherapeutics. Replicative senescence was deemed present at passage ≥19 where BMECs displayed shortened telomere length, reduced proliferative and tubulogenic potentials and increased NADPH oxidase activity, superoxide anion production (markers of oxidative stress), S-β-galactosidase activity and γ-H2AX staining.

Pathogeneses and Imaging Features of Cerebral White Matter Lesions of Vascular Origins.

White matter lesion (WML), also known as white matter hyperintensities or leukoaraiosis, was first termed in 1986 to describe the hyperintense signals on T2-weighted imaging (T2WI) and fluid-attenuated inversion recovery (FLAIR) maps. Over the past decades, a growing body of pathophysiological findings regarding WMLs have been discovered and discussed. Currently, the generally accepted WML pathogeneses mainly include hypoxia-ischemia, endothelial dysfunction, blood-brain barrier disruption, and infiltration of inflammatory mediators or cytokines.

New taxa of tribe Gastrodieae (Epidendroideae, Orchidaceae) from Yunnan, China and its conservation implication.

, a new species of Orchidaceae from Yunnan Province, China, is described and illustrated. It is morphologically similar to , but can be easily distinguished from the latter by having a rhombic epichile, long column (6.0-7.

Three new species of (Orchidaceae: Malaxideae) from Southwest China based on morphological characters and phylogenetic evidence.

and , two new species from the karst region of southwestern China, and , a new species from montane region in Yunnan, are described and illustrated. is easily distinguished from its relatives by having abaxially purple leave with purple reticulate veins prominent adaxially, a lip auriculate at base, and falcate-lanceolate pollinia. is closely related to and but differs from them by having an ovate to broadly ovate leaf, purple lip and apex connate along the margins.

Four new species and a new record of Orchidinae (Orchidaceae: Orchideae) from China.

Four new species of Orchidaceae from China, , , , and , together with a new country record, , are described and illustrated based on morphological and/or phylogenetic analyses. is closely related to but differs from it by having the dorsal sepal ovate-orbicular and lip mid-lobe distinctly shorter than lateral lobes. is close to but is distinguished from it by having several fascicled and straight, root-like tubers (vs.

Taxonomy notes on Vandeae (Orchidaceae) from China: Five new species and two new records.

Five new species (, , , , ) and two newly recorded species (, ) of Vandeae (Orchidaceae) from China are described and illustrated. is similar to and , but differs from them by having an epichile not lobed, the apex of the hypochile not bilobed, and a tine on the apex of the leaf. is similar to , but can be distinguished from the latter by having a flabellate epichile that is densely hirsute on the adaxial surface and an inconspicuous central cushion; in addition, the hypochile of has a keel that extends to the apex of the epichile.

New contributions to Goodyerinae and Dendrobiinae (Orchidaceae) in the flora of China.

Eight new species from China, , , , , , , and , are described and illustrated. differs from by having 5-9 irregular and papillae-like calli on each side in the sac of the lip, epichile with entire lobes, petals narrowly obliquely obovate and an apex that is not recurved. is easily distinguished from its relatives similar by having a long stem, pubescent ovary and sepals, epichile lobes with irregular and undulate margins, a subquadrate callus without teeth in the saccate hypochile.

, a new species of A.ser.Longifiles (Ericaceae) from Yunnan, China.

Y. H. Tong & J.

Nonthrombotic internal jugular venous stenosis may facilitate cerebral venous thrombosis.

Aims: To explore the effect of nonthrombotic internal jugular venous stenosis (IJVS) exerted on cerebral venous thrombosis (CVT).

Methods: Patients with imaging confirmed CVT were enrolled into this real-world case-control study consecutively from January 2018 through April 2021, and were divided into CVT and IJVS-CVT groups, according to whether or not with non-thrombotic IJVS. Chi-square and logistic regression models were utilized for between-group comparison of thrombotic factors.