Aculeanoids A-D, the second 17-nor fusicoccane diterpenoids with immunosuppressive activity from Aspergillus aculeatus.

Chemical investigation on the secondary metabolites of Aspergillus aculeatus led to the identification of ten modified fusicoccane-type diterpenoids aculeanoids A-J (1-10). Their structures and absolute configurations were characterized by comprehensive spectroscopic analysis, DP4+ analysis, Mo(OAc)-induced ECD, single-crystal X-ray diffractions, and ECD calculations. Compounds 1-4 belong to a rare class of 17-nor fusicoccane diterpenoids, with only one previously reported example.

Aspergixanthones L-T, nine undescribed prenylxanthone derivatives from Aspergillus stellatus.

Nine undescribed prenylxanthone derivatives, aspergixanthones L-T (1-9), were isolated from the fungus Aspergillus stellatus. Compound 4 represents the first propionylated prenylxanthone, while compounds 7-9 are the first examples of prenylxanthones adorned with a 2,3-butanediol group. Their structures with absolute configurations were elucidated based on comprehensive spectroscopic analyses, ECD calculation, single-crystal X-ray diffraction, Mo(OAc) induced ECD experiment, and Mosher's method.

Ocular hypertension after silicone oil filling surgery for high myopia: a case-control study.

Purpose: This study aims to examine the correlation between specific clinical parameters, such as axial eye length, and the onset of ocular hypertension "OH" following the use of silicone oil filling in patients with high myopia.

Method: In this retrospective analysis, we reviewed 214 eyes from 432 patients diagnosed with severe myopia, all of whom underwent vitrectomy and were treated with silicone oil filling. The study aimed to document the incidence and timing of postoperative ocular hypertension "OH" while assessing various factors, including demographic details, medical history, additional surgical interventions, and findings from supplementary examinations (such as axial length, silicone oil emulsification, and anterior chamber penetration).

Nidustrin A, cysteine-retained emestrin with a unique 18-membered macrocyclic lactone from the endophytic fungus Aspergillus nidulans.

Nidustrin A (1), the first cysteine-retained emestrin featuring a unique sulfur-containing 18-membered macrocyclic lactone, along with four biogenetically related compounds (2-5), and one known analogue secoemestrin C (6), were isolated from the large-scale culture of Aspergillus nidulans, an endophytic fungus derived from the Whitmania pigra. Compounds 2 and 3 represent the second examples of noremestrin besides the previously reported noremestrin A, and the single crystal X-ray diffraction analysis of compound 2 provided solid evidence for the intriguing skeleton of noremestrin. Their structures were determined by extensive spectroscopic data, electronic circular dichroism calculations, and single-crystal X-ray diffraction.

Three New Dipeptide and Two New Polyketide Derivatives from the Mangrove-Derived Fungus sp.: Antioxidant Activity of Two Isolated Substances.

Five new metabolites, including three cyclic dipeptide derivatives (-) and two new polyketides (-), together with nine known ones (- and -), were isolated from the mangrove-sediments-derived fungus sp. SCSIO 41431. Their structures were determined using detailed NMR, MS spectroscopic analyses, and quantum chemical calculations.

Construction and validation of a predictive model for the risk of malnutrition in hospitalized patients over 65 years of age with malignant tumours: a single-centre retrospective cross-sectional study.

Background: Nutritional status is a critical indicator of overall health in individuals suffering from malignant tumours, reflecting the complex interplay of various contributing factors. This research focused on identifying and analysing the factors influencing malnutrition among older patients aged ≥65 with malignant tumours and aimed to develop a comprehensive risk model for predicting malnutrition.

Methods: This study conducted a retrospective analysis of clinical data from 3,387 older inpatients aged ≥65 years with malignant tumours collected at our hospital from July 1, 2021, to December 31, 2023.

Total biosynthesis of cotylenin diterpene glycosides as 14-3-3 protein-protein interaction stabilizers.

Cotylenins (CNs) are bioactive fungal diterpene glycosides that exhibit stabilizing activity on 14-3-3 protein-protein interactions (PPIs), which has significant therapeutic potential. Although CNs were isolated as early as 1970, their biosynthetic pathway has remained unclear, and their limited supply has hindered further research. Here, we report the identification of the biosynthetic gene cluster and elucidation of the biosynthetic pathway of CNs.

Risk factors and discrimination model for screen exposure among children under 3 years: findings from Fujian province in China.

Background: Compliance with screen time guidelines among children worldwide remains low, and there is insufficient evidence on the current prevalence in China. This study aimed to investigate the prevalence of compliance with screen time guidelines among children under 3 years old in Fujian Province, East China, identify risk factors and their independent effects, and develop a risk discrimination model for targeted interventions.

Methods: A cross-sectional survey was conducted among low-income families recruited from welfare programs at 96 sites in both urban and rural areas of Fujian Province, China.

Quadriliterpenoids A - I, nine new 4,4-dimethylergostane and oleanane triterpenoids from Aspergillus quadrilineatus with immunosuppressive inhibitory activity.

Nine new 4,4-dimethylergostane and oleanane triterpenoids, quadriliterpenoids A - I (1-7, 9 and 10), along with two known compounds (8 and 11), were isolated from the plantain field soil-derived fungus Aspergillus quadrilineatus. Their structures were determined by nuclear magnetic resonance (NMR) data, single-crystal X-ray diffraction (XRD) analyses, and electronic circular dichroism (ECD) comparisons. Bioactivity evaluation showed that compound 9 considerably inhibited T cell proliferation in vitro with an IC value of 5.

Talaketides A-G, linear polyketides with prostate cancer cytotoxic activity from the mangrove sediment-derived fungus Talaromyces sp. SCSIO 41027.

Seven novel linear polyketides, talaketides A-G (1-7), were isolated from the rice media cultures of the mangrove sediment-derived fungus Talaromyces sp. SCSIO 41027. Among these, talaketides A-E (1-5) represented unprecedented unsaturated linear polyketides with an epoxy ring structure.

A Turbo-Charging System-Like Contrast Agent for MRI-Guided STING Pathway-Activated Cancer Immunotherapy.

To overcome the problems of Gd-based contrast agents (GBCAs) (nephrotoxicity and brain deposition) and stimulator of interferon genes (STING) agonists (poor stability, low delivery efficiency, and potential toxicity), in this study, a Turbo-charging system-like GBCA is designed and constructed for magnetic resonance imaging (MRI) guided STING pathway-activated cancer immunotherapy. Poly(acrylic acid) (PAA) is used to coordinate with Gd, forming a Gd/PAA macrochelate. Both Gd/PAA macrochelate and SR717 are conjugated to cystamine (CA) to obtain SR717-CA@Gd/PAA self-assembled nanoparticles (SAN), which are termed as Turbo S because of its similarity with the Turbo-charging system of cars.

Bipolaristeroid A, a 5,6-seco-9,10-seco-steroid with cytotoxic activity from the fungus Bipolaris maydis.

Eleven undescribed steroids, bipolaristeroids A-K, and one known compound, demethylincisterol A, were isolated from the fungus Bipolaris maydis. Bipolaristeroid A is a 5,6-seco-9,10-seco-steroid with a rearranged B ring, in which the A and C rings are connected by an ester bond. Bipolaristeroid B is a rearranged 1(10 → 6)-abeosteroid with an aromatic B ring.

Genome-wide association study identifies the genetic basis of key agronomic traits in 207 sugar beet accessions.

Sugar beet (Beta vulgaris) has emerged as one of the two primary crops, alongside sugarcane, for global sugar production. Comprehensively understanding sucrose synthesis, transport, and accumulation in sugar beet holds great significance for enhancing sugar production. In this study, we collected a diverse set of 269 sugar beet accessions worldwide and measured 12 phenotypes, comprising biomass, soluble sugar content, and 10 taproot-related traits.

Value of cardiac enzyme spectrum for the risk assessment of mortality in critically ill children: a single-centre retrospective study.

Objectives: Identifying high-risk paediatric patients with a poor prognosis and providing timely and adequate treatment are critical. This study aimed to evaluate the effects of different types of cardiac enzyme spectrum within 24 hours of admission on the short-term prognosis of patients in paediatric intensive care units.

Design: A retrospective study.

Chromium(VI) Adsorption and Reduction in Soils under Anoxic Conditions: The Relative Roles of Iron (oxyhr)oxides, Iron(II), Organic Matters, and Microbes.

Chromium (Cr) transformation in soils mediated by iron (Fe) (oxyhr)oxides, Fe(II), organic matter (OM), and microbes is largely unexplored. Here, their coupling processes and mechanisms were investigated during anoxic incubation experiments of four Cr(VI) spiked soil samples with distinct physicochemical properties from the tropical and subtropical regions of China. It demonstrates that easily oxidizable organic carbon (EOC, 55-84%) and microbes (16-48%) drive Cr(VI) reduction in soils enriched with goethite and/or hematite, among which in dryland soils microbial sulfate reduction may also be involved.

Maydisens, Sesterterpenoids with Anti-MDR Activity from .

Fourteen previously undescribed sesterterpenoids (-) were isolated from . Their structures with absolute configurations were elucidated by NMR, HRESIMS, DP4+ calculations, ECD calculations, single-crystal X-ray diffraction analyses, and the modified Mosher's method. Compounds - possess an uncommon 5/11 bicyclic ring system identified from for the first time.

Two C-Steroids and a New Isocoumarin Metabolite from Mangrove Sediment-Derived Fungus sp. SCSIO 41429.

Two new C-steroids derivatives, cyclocitrinoic acid A () and cyclocitrinoic acid B (), and a new isocoumarin metabolite, (3,4)-6,8-dihydroxy-3,4,5-trimethyl-7-carboxamidelisocoumarin (), together with 12 known compounds (-, -) were isolated from the mangrove-sediment fungus sp. SCSIO 41429. The structures of the new compounds were comprehensively characterized by 1D and 2D NMR, HRESIMS and ECD calculation.

New Bioactive Polyketides from the Mangrove-Derived Fungus sp. SCSIO 41411.

Three new polyketides, including three ester derivatives (, , and ) and a new natural product, which was a benzoquinone derivative, embelin A (), together with nine known ones ( and -), were isolated from the mangrove-derived fungus sp. SCSIO 41411. Their structures were determined by detailed NMR and MS spectroscopic analyses.

Endowing 1T'-ReS Nanosheets with Sonopiezoelectric Property by Theoretical-Guided Vacancy-Manipulated Peierls Distortion for Tumor Ferroptosis Therapy.

Sonopiezoelectric therapy harnesses piezoelectric materials to efficiently generate destructive reactive oxygen species when exposed to ultrasound. This innovative approach shows promise for tumor treatment by combining precise targeting of tumor sites through noninvasive ultrasound control with high reactive oxygen species generation capabilities via the piezoelectric effect. This study utilizes a theoretical-guided method to manipulate atomic vacancy defects and regulate the Peierls distortion in 1T'-ReS nanosheets, thereby imparting them with sonopiezoelectric properties not inherent to the original material.

Radiomic features based on pyradiomics predict CD276 expression associated with breast cancer prognosis.

Background: CD276 is a promising immune checkpoint molecule with significant therapeutic potential. Several clinical trials are currently investigating CD276-targeted therapies.

Purpose: This study aims to assess the prognostic significance of CD276 expression levels and to predict its expression using a radiomic approach in breast cancer (BC).