Transcatheter tricuspid valve replacement with LuX-valve device: Overview of key echocardiographic considerations.

Tricuspid regurgitation is a common valve disease with high incidence and poor prognosis. For elderly patients and those with a history of open heart surgery, second thoracotomy and valve replacement carry a high risk. Transcatheter tricuspid valve replacement (TTVR) has become an alternative treatment for patients with high surgical risk. LuX-Valve is a novel self-expandable valve that does not rely on radial force to anchor the valve annulus. The preliminary results have been satisfactory, and this technology is gradually being adopted in China and around the world. Successful implementation of this technique depends on echocardiographic preoperative screening, intraoperative guidance, and postoperative follow-up. The purpose of this article is to provide a state-of-the-art review of the key points and technical considerations for preoperative screening, intraoperative guidance, and postoperative follow-up for TTVR.

Three-Dimensional Nickel Cobalt Phosphide Nanocrosses with Well-Defined Axial Arms for Efficient Oxygen Evolution Reaction.

Concave nanostructure with highly branched architecture and abundant step atoms is one kind of desirable materials for energy conversion devices. However, current synthetic strategies for non-noble metal-based NiCoP concave nanostructure still remain challenging. Herein, we demonstrate a site-selective chemical etching and subsequent phosphorating strategy to fabricate highly branched NiCoP concave nanocrosses (HB-NiCoP CNCs). The HB-NiCoP CNCs are consisted of six axial arms in three-dimensional space and each protruding arm is equipped with high-density atomic steps, ledges and kinks. As an electrocatalyst towards oxygen evolution reaction, the HB-NiCoP CNCs exhibit remarkably enhanced activity and stability, with small overpotential of 289 mV to reach 10 mA cm-2 , surpassing the NiCoP nanocages and commercial RuO2 . The superior OER performance of HB-NiCoP CNCs is originated from the highly branched concave structure, the synergistic effect between bimetal Ni and Co atoms, as well as the electronic structure modulation from P.

In†Silico Analysis Identifies the Anti-Liver Injury Targets of Diammonium Glycyrrhizinate: Validated in Perfluorooctanoic Acid-Lesioned Mouse Model.

Liver injury refers to a pathological condition that causes dysfunction to hepatic parenchymal cells. And diammonium glycyrrhizinate (DG) is clinically prescribed for hepatoprotection. To date, detailed information regarding DG against liver injury in molecular mechanisms remains unrevealed totally. In the present study, we applied network pharmacology and molecular docking to decipher substantial genes, biological functions of DG for treating liver injury. Furthermore, preclinical experiments using perfluorooctanoic acid (PFOA)-induced liver injury in mice were used to validate the bioinformatic findings. Our results showed that the target network of DG and liver injury predominantly shared 90 genes. Eleven core genes of DG treating liver injury including ALB, TP53, TNF, CASP3, PTGS2, JUN, TLR4, IL10, STAT3, NOS3, FOS. The gene ontology and KEGG enrichment further highlighted their importance in regulation of cell proliferation, regulation of transcription, inflammatory response, regulation of NF-kappaB import into nucleus, regulation of apoptotic process, T cell receptor signaling pathway, and Toll-like receptor signaling pathway. Moreover, DG treatment was found to rescue the PFOA-induced liver injury through the modulation of identified genes including TNF, CASP3, PTGS2, and ALB. Current integrated data from bioinformatics method and experimental validation uncovered that DG exerts potent actions to treat liver injury through regulating core targets associated with inflammation and immunomodulation.

Programmable Transient Supramolecular Chiral G-quadruplex Hydrogels by a Chemically Fueled Non-equilibrium Self-Assembly Strategy.

The temporal and spatial control of natural systems has aroused great interest for the creation of synthetic mimics. By using boronic ester based dynamic covalent chemistry and coupling it with an internal pH feedback system, we have developed a new chemically fueled reaction network for non-equilibrium supramolecular chiral G-quadruplex hydrogels with programmable lifetimes from minutes, to hours, to days, as well as high transparency and conductivity, excellent injectability, and rapid self-healing properties. The system can be controlled by the kinetically controlled in situ formation and dissociation of dynamic boronic ester bonds between the cis-diol of guanosine (G) and 5-fluorobenzoxaborole (B) in the presence of chemical fuels (KOH and 1,3-propanesultone), thereby leading to a precipitate-solution-gel-precipitate cycle under non-equilibrium conditions. A combined experimental-computational approach showed the underlying mechanism of the non-equilibrium self-assembly involves aggregation and disaggregation of right-handed helical G-quadruplex superstructures. The proposed dynamic boronic ester-based non-equilibrium self-assembly strategy offers a new option to design next-generation adaptive and interactive smart materials.

Protein Paper from Exfoliated Eri Silk Nanofibers.

The exfoliation of silk fiber is an attractive method to produce silk micro- and nanofibers that retain the secondary structure of native silk. However, most fibrillation methods used to date require the use of toxic and/or expensive solvents and the use of high energy. This study describes a low cost, scalable method to produce microfibrillated silk nanofibers without the use of toxic chemicals by controlling the application of shear using commercially scalable milling and homogenization equipment. Manipulation of the degumming conditions (alkaline concentration and degumming temperature) and the shear in milling and/or homogenization enabled control over the degree of fibrillation. The microfibrillated silk was then characterized to determine structural change during processing and the stability of the resulting suspensions at different pH. Silk nanofibers obtained from milling degummed silk were characterized using atomic force microscopy. Nanofibers obtained both with and without high-pressure homogenization were then used to produce silk "protein paper" through casting. Silk degumming conditions played a critical role in determining the degree of microfibrillation and the properties of the cast silk papers. The silk papers produced from homogenized nanofibers showed excellent mechanical properties, high water absorption, and wicking properties. The silk papers were excellent for supporting the attachment and growth of human skin keratinocytes, demonstrating application possibilities in healthcare such as wound healing.

Natural Eumelanin and Its Derivatives as Multifunctional Materials for Bioinspired Applications: A Review.

Natural melanin is a ubiquitous material that plays critical biofunctional roles in different living organisms. Scientists have dedicated significant efforts to elucidate the biofunctional roles of melanin since its discovery. It has been confirmed that natural melanin possesses a number of intriguing properties such as broadband light absorption, free-radical scavenging ability, redox activity, metal ion chelating, and electronic-ionic conductivity, enabling it to be a versatile functional material in various applications. Natural eumelanin has been the most investigated type of melanin in the past few decades and is discussed in this Review. Here we have comprehensively discussed the latest advances and associated mechanisms in emerging applications of natural eumelanin in different fields such as functional polymers, energy storage, energy conversion, photocatalysis, photothermal therapy, and wastewater treatment considering its bioinspired properties. Important applications developed based on polydopamine, which is a "eumelanin-like" material, will also be presented to give guidelines to further develop natural-melanin-based applications. Authors' perspectives on the challenges and potentials of developing natural-eumelanin-based applications will also be included. This Review provides a clear picture of the natural-eumelanin-based applications and, in turn, accelerates the expansion of the relevant emerging fields.

Infliximab clinically treating ulcerative colitis: A systematic review and meta-analysis.

OBJECTIVE: This review aimed to evaluate the efficacy and safety of infliximab against ulcerative colitis (UC). METHODS: Collection of databases: PubMed, Cochrane Library, Medline, Embase, CBM, and CNKI. This meta-analysis included randomized controlled trials comparing infliximab vs. placebo's, steroids, or immunosuppressants. SEARCH STRATEGY: Searching terms were ('infliximab', OR 'anti-tumor necrosis factor', OR 'tumor necrosis factor', OR 'tumor necrosis factor alpha antibody', OR 'tumor necrosis factor antibody', OR 'IFX') and ('ulcerative colitis' OR 'UC'). Study quality: Independently assessed by two reviewers. DATA SYNTHESIS: Meta-analysis combined the odds ratios (OR). RESULTS: Twenty-two studies (2080 patients) evaluated infliximab therapy in UC, and the patients were randomly assigned into infliximab (1149 cases) and control groups (931 cases). The meta-analysis showed the advantage of infliximab in three endpoints (short/long-term response and long-term remission). The main outcomes considered in this meta-analysis were percentage of response (defined by the authors of each study as partial or complete symptomatic response) and remission (defined by the authors as complete symptomatic response), both at the short-term (the first control performed in the study) and the long-term (the last control performed in the study). Compared to the control group, the infliximab group was significantly more effective (short-term response: OR = 4.01, 95%CI = 3.08-5.23, p < 0.00001; long-term response: OR = 3.53, 95%CI = 2.55-4.89, p < 0.00001; long-term remission: OR = 2.80, 95%CI = 1.89-4.14, p < 0.00001; colectomy (3 months): OR = 0.38, 95%CI = 0.19-0.75, P = 0.005; colectomy (12 months): OR = 0.47, 95%CI = 0.33-0.67, p < 0.0001), but there were no significant differences in the short-term remission (OR = 1.88, 95%CI = 0.91-3.86, P = 0.09), and infliximab was notably effective in all the subgroups with different treatment doses (all p < 0.00001). In the comparison of differences in adverse effects there was no obvious difference between the two groups (OR = 0.76, 95%CI = 0.48-1.19, P = 0.23). CONCLUSION: Infliximab is more effective than placebo's, steroids, or immunosuppressants, while the drug safety between the two groups was not obvious. Further studies are necessary to confirm the long-term efficacy of infliximab in ulcerative colitis.

Solid-State Electrolyte Anchored with a Carboxylated Azo Compound for All-Solid-State Lithium Batteries.

Organic electrode materials are promising for green and sustainable lithium-ion batteries. However, the high solubility of organic materials in the liquid electrolyte results in the shuttle reaction and fast capacity decay. Herein, azo compounds are firstly applied in all-solid-state lithium batteries (ASSLB) to suppress the dissolution challenge. Due to the high compatibility of azobenzene (AB) based compounds to Li3 PS4 (LPS) solid electrolyte, the LPS solid electrolyte is used to prevent the dissolution and shuttle reaction of AB. To maintain the low interface resistance during the large volume change upon cycling, a carboxylate group is added into AB to provide 4-(phenylazo) benzoic acid lithium salt (PBALS), which could bond with LPS solid electrolyte via the ionic bonding between oxygen in PBALS and lithium ion in LPS. The ionic bonding between the active material and solid electrolyte stabilizes the contact interface and enables the stable cycle life of PBALS in ASSLB.

Decreased left atrial myocardial strain in patients with suboptimal blood pressure control.

BACKGROUND: Suboptimal blood pressure (BP) control is commonly observed in patients receiving antihypertensive agents, but the relationship between uncontrolled BP and left atrial (LA) impairment remains unknown. METHODS: This study enrolled 279 hypertensive patients who had been medicated, as well as 85 matched normal controls. The BP of systolic <140 mmHg and diastolic<90 mmHg was defined as optimal (HT1 group, n=146), otherwise as suboptimal BP control (HT2 group, n = 133). LA myocardial function was assessed by the systolic (SSa), early diastolic (SEa), and late diastolic (SAa) LA strains. RESULTS: Both the HT1 group and HT2 group had higher BP reading, thicker interventricular septum, larger LA volume index, and enhanced active atrial emptying fraction than the control group (all <0.05). When compared with normal subjects, hypertensive patients displayed obvious reduction in the SSa (50.0 ± 10.9 vs. 35.9 ± 8.0%), SEa (30.1 ± 7.7 vs. 18.5 ± 7.1%) and SAa (19.9 ± 6.4 vs. 17.8 ± 4.2%) (all p < 0.001). In addition to a further impaired SEa found in the HT2 group than in the HT1 group (17.2 ± 5.3 vs. 19.8 ± 8.3%, p = 0.002), the treated BP of >140/90 mmHg appeared an independent risk factor associated with the abnormal SEa (odds ratio, 2.957; interval of confidence, 1.614-5.415; p = 0.001). CONCLUSIONS: Suboptimal BP control status in hypertensive patients is related to a further reduction of LA myocardial function assessed by the novel 2DSTI free strain, and suboptimal BP might be regarded as a composite risk factor and therefore a simplified treatment target. However, the prognostic value of LA free strain in patients with inability to achieve the BP target needs to be evaluated in future prospective studies.

Uncontrolled blood pressure as an independent risk factor of early impaired left ventricular systolic function in treated hypertension.

BACKGROUND: Uncontrolled blood pressure (BP) is commonly observed in patients receiving antihypertensive agents. However, its relationship with early left ventricular (LV) dysfunction has not been elucidated. METHODS: This study enrolled 276 patients with treated hypertension and 85 healthy controls. The 140/90 mm Hg was used to define controlled (HT1 group, n=145) or uncontrolled BP (HT2 group, n=131) according to the concurrent guidelines. LV myocardial function was assessed by two-dimensional speckle tracking imaging, and the circumferential end-systolic wall stress (cESS)-corrected mid-wall fraction shortening (MWFS), systolic longitudinal (εLs-18), circumferential (εCs-18), and radial (εRs-18) strain were measured. RESULTS: Despite similar ejection fraction, the HT1 and HT2 groups displayed an overall reduction in the cESS-corrected MWFS (13.4±2.7 vs 11.7±1.7 vs 15.5±1.2), εLs-18 (15.6±2.8 vs 13.0±2.2 vs 17.4±2.8), εCs-18 (17.3±3.4 vs 14.1±2.7 vs 18.9±3.3), and εRs-18 (18.4±4.0 vs 14.8±3.1 vs 20.5±4.5) %·cm2 /kdyne·10-2 when compared with the control group (all P<.001). The changes were more obvious in the HT2 group, regardless of LV hypertrophy. Reductions in the cESS-corrected MWFS and εLs-18 were seen in 68 (25%) and 52 (19%) patients, respectively. Uncontrolled BP were 4.365 times (95% CI 2.203-8.648, P<.001) and 3.928 times (1.851-8.337, P<.001) more likely to be associated with the changes. CONCLUSIONS: Uncontrolled BP in hypertensive patients is associated with further reduction in LV myocardial function detected by advanced echocardiographic techniques, which cannot be explained by the increase in afterload. It might be regarded as a composite risk factor for earlier and faster development of clinical heart failure, therefore, a simplified treatment target.

[Functional Analysis of DNA Damage Repair Factor WDR70 and Its Mutation in Ovarian Cancer].

OBJECTIVES: To analyze the cellular function of the newly discovered DNA damage repair factor WDR70, and investigate the mutation in ovarian cancer to verify if function loss of the WDR70gene was associated with ovarian cancer. METHODS: The WDR70 gene was silenced by using siRNA technique or overexpressed its wild and mutation type by with lentivirus and plasmid in hunman cells. The subcellular localization and biochemical function of WDR70 was analyzes by indirect immunofluorescence and immunoblotting. The expression level of WDR70 and the mutations of its cDNA was checked with RT-PCR sequencing for 1 normal ovarian tissue and 16 ovarian cancer specimen. RESULTS: We found gene silencing of WDR70 or overexpression of WDR70 mutation type disrupts the phosphorylation level of homologous recombination functional protein RPA32 and the ability of recruitment at DNA damage site of recombinase RAD51, the loss of function of WDR70 also causes the elevation of the chromosome breakage in metaphase. Meanwhile, we also noticed that the existence of multiple mutations in genomic WDR70 in ovarian cancer specimen. CONCLUSIONS: Our results defined that in vitro system, WDR70 is a DNA damage repair gene, silencing of WDR70 or overexpression of WDR70 mutation type disrupts homologous recombination and chromosomal instability; the frequent mutations of WDR70 gene in genome of ovarian cancer specimens could also lead to DNA repair defeat and gene instability. Consequently WDR70 gene could represent an anti-cancer mechanism for ovarian cancer.

Genetic association between ERCC5 rs17655 polymorphism and lung cancer risk: evidence based on a meta-analysis.

The relationship between excision repair cross-complementing group 5 (ERCC5) rs17655 polymorphism and lung cancer risk remains controversial. To clarify the association, we conducted a comprehensive meta-analysis of all published case-control studies. PubMed, Web of Science, and CNKI were searched to identify the possibly eligible publications. Pooled odds ratio (OR) was estimated using the fixed effect model. Q test and I (2) index were used to evaluate heterogeneity between studies, and Egger's and Begg's tests were utilized to assess publication bias. Meta-analysis of nine case-control studies including 4,044 cases and 5,100 controls indicated that there was no global association between rs17655 polymorphism and lung cancer risk. Subgroup analyses according to ethnicity and histologic type revealed similar results. In summary, our meta-analysis suggests that ERCC5 rs17655 polymorphism may not contribute to genetic susceptibility for lung cancer.

Higher blood pressure control rate in a real life management program provided by the community health service center in China.

BACKGROUND: Community health service center (CHSC) in China is always regarded as a good facility of primary care, which plays an important role in chronic non-communicable disease management. This study aimed to investigate the blood pressure (BP) control rate in a real life CHSC-based management program and its determinants. METHODS: The study enrolled 3191 patients (mean age of 70 ± 10 years, 43% males) in a hypertension management program provided by the Yulin CHSC (Chengdu, China), which had been running for 9 years. Uncontrolled BP was defined as the systolic BP of ≥140 mmHg and/or the diastolic BP of ≥90 mmHg, and its associated factors were analyzed by using logistic regression. RESULTS: The duration of stay in the program was 33 ± 25 months. When compared with the BP at entry, the recent BP was significantly lowered (147 ± 17 vs. 133 ± 8 mmHg; 83 ± 11 vs. 75 ± 6 mmHg) and the BP control rate was dramatically increased (32 vs. 85%) (all p < 0.001). The age of >70 years [1.40 (odds ratio), 1.15-1.71 (95% confidence interval)], female gender (0.76, 0.63-0.93), longer stay of >33 months (0.77, 0.63-0.94), doctor in charge (0.97, 0.95-0.99), and the use of calcium channel blocker (1.35, 1.09-1.67) were significantly related to uncontrolled BP at the recent follow up (all p < 0.05). CONCLUSIONS: This CHSC-run hypertension program provides an ideal platform of multi-intervention management, which is effective in achieving higher BP control rate in community patient population. However, the BP control status could be affected by age, gender and adherence of the patients, as well as practice behavior of the doctors.

Incremental value of global systolic dyssynchrony in determining the occurrence of functional mitral regurgitation in patients with left ventricular systolic dysfunction.

AIMS: The aim of this study was to assess the contribution of left ventricular (LV) systolic dyssynchrony to functional mitral regurgitation (MR). METHODS AND RESULTS: Patients (n = 136) with LV systolic dysfunction (ejection fraction <50%) and at least mild MR were prospectively recruited. The effective regurgitant orifice area (EROA) was assessed by the proximal isovelocity surface area method. Left ventricular global systolic dyssynchrony [the maximal difference in time to peak systolic velocity among the 12 LV segments (Ts-Dif)] and regional systolic dyssynchrony (the delay between the anterolateral and posteromedial papillary muscle attaching sites) were assessed by tissue Doppler imaging. Left ventricular global and regional remodelling, systolic function, indices of mitral valvular and annular deformation were also measured. The size of the EROA correlated with the degrees of mitral deformation, LV remodelling, systolic function, and systolic dyssynchrony. By multivariate logistic regression analysis, the mitral valve tenting area (OR = 1.020, P < 0.001) and the Ts-Dif (OR = 1.011, P = 0.034) were independent determinants of significant functional MR (defined by EROA ≥20 mm(2)). From the receiver-operating characteristic curve, the tenting area of 2.7 cm(2) (sensitivity 83%, specificity 82%, AUC 0.86, P < 0.001) and the Ts-Dif of 85 ms (sensitivity 66%, specificity 72%, AUC 0.74, P < 0.001) were associated with significant functional MR. The assessment of Ts-Dif showed an incremental value over the mitral valve tenting area for determining functional MR (χ(2) = 53.92 vs.49.11, P = 0.028). CONCLUSION: This cross-sectional study showed that LV global, but not regional systolic dyssynchrony, is a determinant of significant functional MR in patients with LV systolic dysfunction, and is incremental to the tenting area that is otherwise the strongest factor for mitral valve deformation.

Compact Micropatterned Chip Empowers Undisturbed and Programmable Drug Addition in High-Throughput Cell Screening.

Simultaneously adding multiple drugs and other chemical reagents to individual droplets at specific time points presents a significant challenge, particularly when dealing with tiny droplets in high-throughput screening applications. In this study, a micropatterned polymer chip is developed as a miniaturized platform for light-induced programmable drug addition in cell-based screening. This chip incorporates a porous superhydrophobic polymer film with atom transfer radical polymerization reactivity, facilitating the efficient grafting of azobenzene methacrylate, a photoconformationally changeable group, onto the hydrophilic regions of polymer matrix at targeted locations and with precise densities. By employing light irradiation, the cyclodextrin-azobenzene host-guest complexes formed on the polymer chip can switch from an "associated" to a "dissociated" state, granting precise photochemical control over the supramolecular coding system and its surface patterning ability. Significantly, the exceptional spatial and temporal control offered by these chemical transitions empowers to utilize digital light processing systems for simultaneous regulation and release of cyclodextrin-bearing drugs across numerous droplets containing suspended or adhered cells. This approach minimizes mechanical disruption while achieving precise control over the timing of addition, dosage, and integration varieties of released drugs in high-throughput screening, all programmable to meet specific requirements.

Photodynamic therapy combined with antifungal drugs against kerion: A report of six cases and literature review.

Kerion, a severe manifestation of tinea capitis caused by dermatophytes, is a fungal skin disease primarily affecting children. This report discusses six cases of pediatric kerion that were successfully treated with a combination of photodynamic therapy (PDT) and antifungal agents. Additionally, we conducted a literature review, identifying and analyzing six published reports on kerion and tinea capitis. The characteristics and efficacies of these cases are summarized. In summary, early combination therapy and proactive pre-treatment interventions proved effective in maximizing therapeutic outcomes, reducing disease duration and minimizing adverse reactions such as cicatricial alopecia. This approach has emerged as a favorable choice for the treatment of kerion.

A high quality BiOCl film with petal-like hierarchical structures and its visible-light photocatalytic property.

BiOCl film with petal-like hierarchical structures is obtained by dipping bismuth film into the mixed solution of H2O2 and HCl. To obtain a high quality BiOCI film, a connecting layer of Chromium is deposited between the substrate and Bismuth film. The product is easy-synthesized, high productive, reusable and environment-friendly. The structural analysis indicates that the BiOCI film is composed by petals with smooth surfaces, and the nanopetals grow along the (101) directions. Raman spectroscopy shows that the film has a good stress-resist feature. The PL spectrum shows that the defect energy levels of BiOCI nanostructure contribute to the excellent photoactivity of degradation the rhodamine B (RhB) under visible-light irradiation (A > 420 nm). This photocatalyst can keep stable photoactivity after it has been reused for 6 rounds. All those properties ensure the photocatalyst a bright future in the application of the pollution treatment.

Hierarchical PdNi alloy nanochains coupled with Ni(OH)2 nanosheets to enhance CO-poisoning resistance for the methanol oxidation reaction.

Hybridizing Pd-based electrocatalysts with Ni-based species has been recognized as an effective pathway to enhance the catalytic performance for the methanol oxidation reaction (MOR). However, doping Ni-based species with heterogeneous valences into Pd nanocrystals still remains challenging, although heterogeneous valence Ni species may result in improved properties of Pd from different aspects. Herein, a facile one-pot synthetic method is reported to simultaneously introduce alloyed Ni0 into Pd lattices and couple hydroxy Ni2+ species with a Pd surface, generating 1D porous PdNi alloy nanochains@Ni(OH)2 nanosheet hybrids (PdNi NCs@Ni(OH)2 NSs). Borane-tert-butylamine (C4H14BN) plays the key role in realizing the formation of Ni-based species with heterogeneous valence. On one hand, it works as a reducing agent to facilitate the doping of alloyed Ni0 into the lattice of Pd nanochains. On the other hand, it raises the solution pH value and converts the remaining [Ni(CN)4]2- into Ni(OH)2 nanosheets. Each component of the PdNi NCs@Ni(OH)2 NSs plays an important role: Pd serves as the active site, alloyed Ni0 modifies the electronic structure of Pd, and Ni(OH)2 provides abundant OHads species to strengthen the anti-poisoning capability, thus greatly enhancing the activity, CO-tolerance, and durability for the MOR.