Ellagitannins From Pomegranate Flower With Whitening and Anti-Skin Photoaging Effect.

A new depside glucoside rosarugoside E (1), together with four known compounds punicalagin (2), corilagin (3), granatin B (4), and ellagic acid (5) were isolated from the ethanol extract of pomegranate (Punica granatum L.) flower. Their structures were identified based on careful analysis of various spectral data including ultraviolet, infrared, high-resolution electrospray ionization-mass spectrometry, and 1D and 2D nuclear magnetic resonance.

Corrole-based photothermal nanocomposite hydrogel with nitric oxide release for diabetic wound healing.

The management of chronic diabetic wounds remains a significant challenge due to persistent bacterial infections and impaired angiogenesis. Herein, we reported a nanocomposite hydrogel (M/P-SNO/G) incorporated with M/P-SNO nanoparticles engineered by supramolecular assembly of the photosensitizing mono-carboxyl corrole (MCC) and S-nitrosothiol-modified polyethylene glycol (mPEG-SNO) for synergistic photothermal therapy (PTT)/nitric oxide (NO) treatment of diabetic wounds. The strong π-π interaction among aggregated MCC in M/P-SNO enhances the optical absorption and photothermal ability, thereby facilitating the precise release of NO upon laser irradiation.

Phenolic Components and Biological Activity of Pomegranate.

Pomegranate (Punica granatum L.) have been subject of extensive studies for its abundance of phytochemicals and numerous biological and medicinal properties. It is a fruit-bearing tree, which is widely consumed as a nutraceutical source as well as functional food for putative health benefits.

Study on the variation patterns of sea surface oil spill characteristics based on GNSS-R under different wind speeds.

Marine oil spills severely pollute marine environments, making rapid and accurate detection crucial. However, current Global Navigation Satellite System-Reflectometry (GNSS-R) oil spill detection studies overlook the impact of sea wind, leading to false or missed detections. This study simulates the mean square slope (MSS), scattering coefficient, coherent power, and delay-Doppler map (DDM), and explores the impact of sea wind on GNSS-R oil spill detection parameters.

Discovery and Biomimetic Semisynthesis of Spirophyllines A-D from .

Spirophyllines A-D (-), four new spirooxindole alkaloids all characterized by the spiro[pyrrolidin-3,3'-oxindole] core and a rare isoxazolidine ring, were isolated from . Their structures were determined by spectroscopic methods and confirmed by X-ray crystallography. Based on the biomimetic semisynthesis strategy, compounds - were synthesized in three steps via the key reactions of 1,3-dipolar cycloaddition and Krapcho decarboxylation from corynoxeine.

Development of a novel phosphoramidite-selenide ligand for Pd-catalyzed asymmetric allylic substitution.

A novel chiral P,Se-heterodonor ligand has been designed and prepared through an efficient and simple operation. This ligand can be successfully applied to Pd-catalyzed asymmetric allylic substitution with C- and N-nucleophiles, producing a diverse range of chiral allylic products in high yields and enantioselectivities (up to 99% yield and 95% ee).

Eleven undescribed alkaloids from the rhizomes of Sinomenium acutum and their IDO1 and TDO inhibitory activities.

Eleven previously undescribed alkaloids, named sinometumines A-K, along with three known alkaloids, were isolated from the rhizomes of Sinomenium acutum. The chemical structures of these unreported compounds were established using extensive spectroscopic methods (IR, UV, HRESIMS, and NMR), and their absolute configurations were determined by single crystal X-ray diffraction analyses and calculated electronic circular dichroism spectroscopy (ECD). Sinometumine D was the first aporphine-type derived alkaloid inner salt with a rearranged dibenzofuran ring backbone.

Rhynchines A-E: Ca3.1 Calcium Channel Blockers from .

Rhynchines A-E (-), five new indole alkaloids with an unprecedented skeleton, were isolated from . The new skeleton was characterized by an indole moiety and a 2-oxa-8-azatricyclo[6,5,0,0]tridecane core, forming a unique 6/5/7/5/5 ring system. Their structures were determined by nuclear magnetic resonance, high-resolution electrospray ionization mass spectrometry, infrared spectroscopy, and calculated electronic circular dichroism (ECD) and were confirmed by X-ray crystallography.

Cassane diterpenoids from the seeds of Caesalpinia bonduc and their nitric oxide production and α-glucosidase inhibitory activities.

Ten previously undescribed cassane diterpenoids, cassabonducins A-J, and eleven known compounds were isolated from the seeds of Caesalpinia bonduc. The structures of the undescribed compounds were elucidated by extensive analysis of spectroscopic data (IR, HRESIMS, and H, C and 2D NMR) and their absolute configurations were determined by the ECD data and single-crystal X-ray diffraction analysis. ε-Caesalpin-Ⅶ was obtained from natural resources for the first time.

Functional Magnetic Resonance Imaging Reveals Early Connectivity Changes in the Auditory and Vestibular Cortices in Idiopathic Sudden Sensorineural Hearing Loss With Vertigo: A Pilot Study.

The underlying pathophysiology of idiopathic sudden sensorineural hearing loss (ISSNHL) with vertigo has yet to be identified. The aims of the current study were (1) to elucidate whether there are functional changes of the intrinsic brain activity in the auditory and vestibular cortices of the ISSNHL patients with vertigo using resting-state functional magnetic resonance imaging (rs-fMRI) and (2) whether the connectivity alterations are related to the clinical performance associated with ISSNHL with vertigo. Twelve ISSNHL patients with vertigo, eleven ISSNHL patients without vertigo and eleven healthy subjects were enrolled in this study.

Neo-clerodane Diterpenoids with Hypoglycemic Effects in Vivo from the Aerial Parts of Salvia hispanica L.

A new neo-clerodane diterpenoid, salvihispin H (1), and six known ones (2-7) were identified from the aerial parts of Salvia hispanica L. The structure and absolute configuration of 1 were elucidated by extensive analysis of spectroscopic ( H, C, and 2D NMR, and HR-ESI-MS) and single-crystal X-ray diffraction data. The anti-diabetic effects of salvihispin H (1) and salvifaricin (2) were evaluated in diabetic db/db mice.

[Short-term postoperative outcome of laser-assisted stapedotomy in patients with otosclerosis].

To assess the short-term efficacy of laser-assisted stapedotomy in patients with otosclerosis. The clinical data of twenty-one patients with otosclerosis who underwent laser-assisted stapedotomy were retrospectively analyzed . Preoperative and 3-month postoperative standardized audiometric evaluations were carried out in all patients.

A Comparison of Triamcinolone Acetonide Econazole Cream and Nystatin Suspension in Treatment of Otomycosis.

Objectives/hypothesis: To compare the efficacy and adverse effects of triamcinolone acetonide econazole cream and nystatin suspension in the treatment of otomycosis, and to determine the clinical features, predisposing factors, and etiology of otomycosis.

Study Design: A prospective study.

Methods: A prospective clinical trial was conducted on 786 patients diagnosed with otomycosis.

Rearranged neoclerodane diterpenoids from the aerial parts of Salvia hispanica L.

Six new rearranged neoclerodane diterpenoids (1-6), as well as three known ones, were obtained from the aerial part of Salvia hispanica L. Their structures were elucidated by extensive analysis of spectroscopic data (1D, 2D NMR, and HRESIMS) and Mosher's method. The absolute configurations of 1, 2, and 4 were determined by single-crystal X-ray diffraction analysis.

Huperserratines A and B, Two Macrocyclic Alkaloids with an Unusual Skeleton from .

Huperserratines A () and B (), two alkaloids with an unprecedented 5-aza-bicyclo[10.4.0]hexadecane skeleton and an oxime function, were isolated from .

The Role of Endolymphatic Hydrops in Patients with Pantonal Idiopathic Sudden Sensorineural Hearing Loss: A Cause or Secondary Reaction.

The purpose of this study was to investigate the presence of endolymphatic hydrops (EH) in both affected and unaffected ears of patients with pantonal unilateral idiopathic sudden sensorineural hearing loss (ISSNHL) using three-dimensional fluid-attenuated inversion recovery magnetic resonance imaging (3D-FLAIR MRI) and further evaluate the significance of EH in this disorder. Twenty-seven ISSHL patients were enrolled in this study. 3D-FLAIR MRI was performed 24 h after intratympanic injection of gadolinium-diethylenetriaminepentaacetic acid (Gd-DPTA).

Neo-clerodane diterpenoids from aerial parts of Salvia hispanica L. and their cardioprotective effects.

Ten undescribed neo-clerodane diterpenoids, named hispanins A-J, together with six known ones, were isolated from the aerial parts of Salvia hispanica L. Their structures were established by extensive spectroscopic analysis. The absolute configurations of the undescribed compounds were determined by the ECD data and single crystal X-ray diffraction analysis.

[Effect of electrical stimulation at auricular points combined with sound masking on the expression of CREB, BDNF and TrkB in the auditory cortex of tinnitus rats].

Objective: To explore the effect of electrical stimulation at auricular points (EAS) combined with sound masking on the expression of cAMP-response element binding protein (CREB), brain-derived neurotrophic factor (BDNF) and tyrosine receptor kinase B (TrkB) in the auditory cortex of tinnitus rats.

Methods: A total of 27 adult male SD rats were randomly divided into a control group, a model group and an EAS group. The rats in the model group and the EAS group were intervened with intraperitoneal injection of sodium salicylate to induce tinnitus model, while the rats in the control group were intervened with injection of 0.

Diterpenoids and sesquiterpenoids from the stem bark of Metasequoia glyptostroboides.

A phytochemical study on the stem bark of Metasequoia glyptostroboides led to the isolation of sixty-one diterpenoids and sesquiterpenoids, including seventeen previously undescribed compounds, metaglyptins A-Q. Their structures were elucidated by extensive analysis of spectroscopic data (IR, UV, HRESIMS, and H, C and 2D NMR). The absolute configurations of metaglyptins I, J, and O were determined by the ECD data and single-crystal X-ray diffraction analysis.

Phytochemical constituents of the pericarps of and their anti-inflammatory activity.

Phytochemical investigation on the pericarps of lead to the isolation and structure elucidation of a new sesquiterpene, sesquicaranoic acid C (), a new neolignan, difengpiol C (), and 10 known compounds. The structures and absolute configurations of two new compounds were determined by a combination of NMR and CD spectroscopic analyses. All isolates were evaluated for their inhibitory effects on lipopolysaccharide (LPS)-induced nitric oxide (NO) production in RAW264.

Predictive factors for complications associated with penetrated fish bones outside the upper gastrointestinal tract.

Purpose: To investigate predictive risk factors for complications associated with migrating fish bones in the surrounding tissue of upper gastrointestinal tract.

Methods: A retrospective analysis over 12 years was conducted of 45 cases of buried fish bones in the surrounding tissue of upper gastrointestinal tract with complications. Meanwhile, a control group, including 39 cases of prolonged buried fish bones in the surrounding tissue of upper gastrointestinal tract without complications, was set.

Expression of E-prostanoid receptors in nasal polyp tissues of smoking and nonsmoking patients with chronic rhinosinusitis.

Background: Different inflammatory reactions have been observed in the polyp tissues of nonsmokers and smokers with chronic rhinosinusitis (CRS). E-prostanoid (EP) receptors play a role in the inflammatory processes. Cigarette smoke (CS) exposure regulates EP-receptor expression levels promoting inflammatory mediator release from various inflammatory cells.

Three new Lycopodium alkaloids from Lycopodium japonicum.

Three new Lycopodium alkaloids (1-3), together with 15 known alkaloids, were isolated from club moss Lycopodium japonicum. Their structures were determined by extensive spectroscopic analysis, including 1D and 2D NMR spectra. Compound 1 has an unusual β-oriented methyl group substituted at C-15 and an α-hydroxy cyclopentenone moiety.

Transauricular vagus nerve stimulation at auricular acupoints Kindey (CO10), Yidan (CO11), Liver (CO12) and Shenmen (TF4) can induce auditory and limbic cortices activation measured by fMRI.

The purpose of this study was to explore the central mechanism of transauricular vagus nerve stimulation (taVNS) to human by fMRI and to find a suitable taVNS site for potential tinnitus treatment. 24 healthy subjects aged between 28 and 38 years were enrolled in the experiment. 8 subjects were stimulated in the auricular acupoints Kindey (CO10), Yidan (CO11), Liver (CO12) and Shenmen (TF4) in the left ear, 8 subjects were stimulated at the anterior wall of the auditory canal and left lower limb as an anterior stimulation group; 8 persons who were arranged in a sham group received taVNS at the left ear lobe and tail of the helix.

Protostane-Type Triterpenoids from Alisma orientale.

Twenty-eight protostane triterpenoids, including a new degraded one (1), nine new ones (2 - 10), and two new natural ones (11 and 12), have been isolated from the dried rhizomes of Alisma orientale. Alisol R (1) was the first 20,21,22,23,24,25,26,27-octanorprotostane triterpenoid. The absolute configurations of 25-methoxyalisol F (2) and 16β-hydroperoxyalisol B 23-acetate (3) were determined by X-ray diffraction analysis.