Insect metamorphosis and chitin metabolism under miRNA regulation: a review with current advances.

Insect metamorphosis is a complex developmental process regulated by microRNAs (miRNAs) and hormonal signaling pathways. Key genes driving insect ontogenic changes are precisely modulated by miRNAs, which interact with 20-hydroxyecdysone (20E) and juvenile hormone (JH) to coordinate developmental transitions. Over the past decade, significant progress has been made in understanding miRNA biogenesis, their regulatory roles in gene expression, and their involvement in critical biological processes, including metamorphosis and chitin metabolism.

Understanding problematic TikTok use: A systematic review of emerging diagnostic and therapeutic implications in clinical psychology.

TikTok's rapid rise has spurred concerns about its potential to cause problematic use behaviors, which some consider akin to addiction. This systematic review seeks to understand the diagnostic and therapeutic implications of TikTok use within the scope of clinical psychology. From September 15, 2023 to March 30, 2024 a systematic review was conducted to investigate whether this new pathological condition can be recognized as a behavioral addiction.

Updated Insights Into the Mechanism of Salt-Induced Aggregation-Based Single-Molecule Surface-Enhanced Raman Spectroscopy.

Since its discovery in 1997, the single molecule surface-enhanced Raman spectroscopy (SM-SERS) has attracted wide interest owing to its enormous potential in many fields. However, the commercialized applications of SM-SERS are still limited by the lack of a clear understanding of the relevant mechanism in the famous SM-SERS experiments. In this study, a salt-gradient model is proposed to deeply investigate the physical nature and update insights into the morphological, structural, and component evolution processes of Ag NPs from dispersed nanostructures to aggregation states in the salt-induced aggregation SERS strategy.

Developing and Implementing a Colorectal Cancer Screening Program in Uganda: Stakeholder Perceived Barriers and Opportunities.

Introduction: Colorectal cancer (CRC) incidence is increasing in Uganda. Despite this, and the disproportionately high burden of early onset and late-stage CRC cases, no CRC screening program exists in Uganda. To guide and inform future CRC prevention efforts, interviews with key stakeholders were undertaken to better understand the perceived barriers and opportunities relevant to the development and implementation of a CRC screening program in Uganda.

Lithium Bond-Mediated Molecular Cascade Hydrogel for Injury-Free and Repositionable Adhesive Bioelectronic Interfaces.

Flexible bioelectronic interfaces with adhesive properties are essential for advancing modern medicine and human-machine interactions. However, achieving both stable adhesion and non-damaging detachment remains a significant challenge. In this study, a lithium bond-mediated molecular cascade hydrogel (LMCH) for bioelectronic interfaces is designed, which facilitates robust adhesion at the tissue level and permits atraumatic detachment for repositioning as required.

Loss of N-6 adenine-specific DNA methyltransferase 1 leads to meiotic prophase abnormalities and male sub-fertility in mice.

Mammalian sexual reproduction critically relies on the generation of haploid gametes following a specialized cell division process known as meiosis. Here, we demonstrate that N-6 Adenine-Specific DNA methyltransferase 1 (N6AMT1) plays a crucial role in the progression of meiosis during spermatogenesis, as follows. N6AMT1 was expressed in germ cells throughout the entire process of spermatogenesis, with a peak in mRNA levels in spermatocytes at the prophase I stage of meiosis.

Effects of tea polyphenols disinfectant on microbial communities and potential pathogenic bacteria in water.

The structural and abundance changes in water disinfected by tea polyphenols were investigated in high-abundance microbial communities (HAMC), medium-abundance microbial communities (MAMC), and low-abundance microbial communities (LAMC), also included the interactions within and between these communities. The antibacterial effect of tea polyphenols was observed at concentrations of 20-300 mg/L. If the tea polyphenols concentration is greater than or equal to 200 mg/L, it can continue to inhibit the growth of bacteria, and keep the total number of bacteria in 48 hours no more than100 CFU/ml, and this reflected the continuity of tea polyphenols disinfectant in the pipe network.

Assessment of compliance with tetracycline eye ointment treatment to accelerate the elimination of trachoma in Yobe State, Nigeria.

Background: Trachoma, a neglected tropical disease, remains a significant public health concern in many regions, particularly in sub-Saharan Africa and in Yobe State, Nigeria. One approach for elimination involves administering tetracycline eye ointment (TEO) to children <6 months of age as part of annual mass drug administration (MDA), aligning with the World Health Organization's 'A' component of the SAFE (Surgery, Antibiotics, Facial hygiene and Environmental sanitation) strategy for elimination of trachoma as a public health problem. However, suboptimal compliance rates in affected populations pose challenges, potentially serving as a reservoir for reinfection and hindering progress toward trachoma elimination.

Flexible Patterned Fuel Cell Patches Stimulate Nerve and Myocardium Restoration.

The distribution of electrical potentials and current in exogenous electrostimulation has significant impacts on its effectiveness in promoting tissue repair. However, there is still a lack of a flexible, implantable power source capable of generating customizable patterned electric fields for in situ electrostimulation(electrical stimulation). Herein, this study reports a fuel cell patch (FCP) that can provide in situ electrostimulation and a hypoxic microenvironment to promote tissue repair synergistically.

Highly Efficient Indoor Perovskite Solar Cells with 40% Efficiency Using Perylene Diimide-Based Zwitterionic Cathode Interlayers.

Metal halide perovskites are ideal candidates for indoor photovoltaics (IPVs) due to their tunable bandgaps, which allow the active layers to be optimized for artificial light sources. However, significant non-radiative carrier recombination under low-light conditions has limited the full potential of perovskite-based IPVs. To address this challenge, an integration of perylene diimide (PDI)-based sulfobetaines as cathode interlayers (CILs) is proposed and the impact of varying alkyl chain length (from 1,2-ethylene to 1,5-pentylene) between the cationic and the anionic moieties is examined.

Controlled Modulation of Intrinsic Electron Response in C/CoT Nanoplates Toward Multispectral Excitation Devices.

Electromagnetic materials with adjustable dielectric and magnetic properties are constantly sought after in electronic and industrial fields. In this study, an innovative strategy that customizes anchored Co-based nanoparticles to optimize the electronic behaviors is proposed for the first time, enabling a controllable and high-efficiency evolution of the macroscopic electromagnetic response of Co-based (C/CoT) nanoplates across the X-ray, light in the solar band and gigahertz band. Specifically, in the gigahertz band, the C/Co and C/CoSe nanoplates with high-power loss capabilities can effectively attenuate and convert electromagnetic energy into heat energy, which not only prevents space electromagnetic radiation but also powers energy for various electromagnetic devices such as thermoelectric generators and microwave actuators.

Dual-Carriers of Tartary Buckwheat-Derived Exosome-Like Nanovesicles Synergistically Regulate Glucose Metabolism in the Intestine-Liver Axis.

The utilization of plant-derived exosome-like nanovesicles (ELNs) as nanocarriers for oral delivery of bioactives has garnered significant attention. However, their distinctive lipid membrane composition may result in elevated membrane permeability within the gastrointestinal environment, leading to the leakage of carried bioactives. Inspired by the concept of projectile design, Tartary buckwheat-derived ELNs (TB-ELNs) based dual-carriers are fabricated by loading chlorogenic acid (CGA) into the cores and bonding selenium nanoparticles (SeNPs) to the lipid membrane.

Integration of Photodiagnosis and Therapy Guided by Micro/Nanorobots.

Micro/Nanorobots(MNRs)integrated with phototherapy represent an emerging approach to cancer treatment and hold significant potential for addressing bacterial infections, neurological disorders, cardiovascular diseases, and related conditions. By leveraging micro/nanoscale motor systems in conjunction with phototherapy, these robots enable real-time guidance and monitoring of therapeutic processes, improving drug delivery precision and efficiency. This integration not only enhances the effectiveness of phototherapy but also minimizes damage to surrounding healthy tissues.

Confining Spirocyclic Fluorescein in an Asymmetric Solid-State Nanochannel: A Simple and Versatile Design Concept for Fabricating Integrated Nanofluidic Diodes with Adjustable Surface Chemistry.

Using small molecules to integrate multifunctional surfaces within a nanopore is an effective way to endow smart responsibilities of nanofluidic diodes. However, the complex synthesis of the small molecules hinders their further application in achieving multifunctional surfaces. Here, a simple and versatile design concept is reported for fabricating bioinspired integrated nanofluidic diodes with adjustable surface chemistry by confining a spirocyclic fluorescein derivative, 6-aminofluorescein (6-AF), within an asymmetric track-etched nanopore.

Stochastic Impact Electrochemistry of Alkanethiolate-Functionalized Silver Nanoparticles.

This study uses single-impact experiments to explore how the nanoparticles' surface chemistry influences their redox activity. 20 and 40 nm-sized silver nanoparticles are functionalized with alkanethiol ligands of various chain lengths (n = 3, 6, 8, and 11) and moieties (carboxyl ─COOH / hydroxyl ─OH), and the critical role of the particle shell is systematically examined. Short COOH-terminated ligands enable efficient charge transfer, resulting in higher impact rates and fast, high-amplitude transients.

Advances in Polymer-Based Self-Adjuvanted Nanovaccines.

Nanovaccines, as a new generation of vaccines, have garnered significant interest due to their exceptional potential in enhancing disease prevention and treatment. Their unique features, such as high stability, antigens protection, prolonged retention, and targeted delivery to lymph nodes, immune cells, and tumors, set them apart as promising candidates in the field of immunotherapy. Polymers, with their superior degradability, capacity to mimic pathogen characteristics, and surface functionality that facilitates modifications, serve as ideal carriers for vaccine components.

Layered-Hierarchical Dual-Lattice Strain Suppresses NiSe Surface Reconstruction for Stable OER in Alkaline Fresh/Seawater Splitting.

Transition metal selenides (TMSe) are promising oxygen evolution reaction (OER) electrocatalysts but act as precursors rather than the actual active phase, transforming into amorphous oxyhydroxides during OER. This transformation, along with the formation of selenium oxyanions and unstable heterointerfaces, complicates the structure-activity relationship and reduces stability. This work introduces novel "layered-hierarchical dual lattice strain engineering" to inhibit the surface reconstruction of NiSe by modulating both the nickel foam (NF) substrate with MoN nanosheets (NM) and the NiSe nanorods-nanosheets catalytic layer (NiSe-NiSe-NiO, NSN) with ultrafast interfacial bimetallic amorphous NiFeOOH coating, achieving the optimized NM/NSN/NiFeOOH configuration.

Recent Advances for Cation-Anion Aggregates in Solid Polymer Electrolytes: Mechanism, Strategies, and Applications.

Solid polymer electrolytes (SPEs) have garnered significant attention from both academic and industrial communities due to their high safety feature and high energy density in combination with lithium(Li) metal anode. Nevertheless, their practical applications remain constrained by the relatively low room-temperature ionic conductivity and interface issues. Anion-derived cation-anion aggregates (AGGs), derived from high-concentration liquid electrolytes, promote a stable solid-electrolyte interphase layer, which have gradually propelled their application in SPEs.

Recent Progress in Oxygen Reduction Reaction Toward Hydrogen Peroxide Electrosynthesis and Cooperative Coupling of Anodic Reactions.

Electrosynthesis of hydrogen peroxide (HO) via two-electron oxygen reduction reaction (2e ORR) is a promising alternative to the anthraquinone oxidation process. To improve the overall energy efficiency and economic viability of this catalytic process, one pathway is to develop advanced catalysts to decrease the overpotential at the cathode, and the other is to couple 2e ORR with certain anodic reactions to decrease the full cell voltage while producing valuable chemicals on both electrodes. The catalytic performance of a 2e ORR catalyst depends not only on the material itself but also on the environmental factors.

Three new species of (Agaricales, Basidiomycota) from southern China.

Three new species of are discovered from southern China. is characterized by its small basidiomata, greenish-green pileus, slender stipe, narrow, and close lamellae. is characterized by its pubescent pileus when young, yellowish white to pale yellow lamellae that are lighter towards the margin, narrowly cylindrical to lageniform pleurocystidia, and absent cheilocystidia.

Prospect of extracellular vesicles in tumor immunotherapy.

Extracellular vesicles (EVs), as cell-derived small vesicles, facilitate intercellular communication within the tumor microenvironment (TME) by transporting biomolecules. EVs from different sources have varied contents, demonstrating differentiated functions that can either promote or inhibit cancer progression. Thus, regulating the formation, secretion, and intake of EVs becomes a new strategy for cancer intervention.

Towards the first synthetic eukaryotic cell.

With the rapid advance in synthetic biology and the expanding field of synthetic genomics, the realization of a redesigned yeast genome has become an achievable milestone. Multiple eukaryotic chromosomes, meticulously designed and synthesized, are now being systematically integrated to create an entirely synthetic eukaryotic cell. This comprehensive review examines the fundamental design principles and construction strategies, highlighting critical technological breakthroughs in pursuing the first synthetic eukaryotic cell.

Coordination in strictly metric-free swarms: evidence for the existence of biological diversity.

Coordination serves as a crucial metric for analysing collective behaviour in complex systems. Given the prevalence of biological diversity, this study re-evaluated the coordination issue in strictly metric-free (SMF) swarms, incorporating both limited perceptual ranges and hierarchical dynamics. Initially, the study introduced a single-layer hierarchical SMF model that was optimized using differential evolution strategies.

Global, regional and national burden of decubitus ulcers in 204 countries and territories from 1990 to 2021: a systematic analysis based on the global burden of disease study 2021.

Background: Decubitus ulcers, also known as pressure ulcers, pose a significant public health challenge due to their substantial impact on morbidity, mortality, and healthcare expenditures.

Methods: The number and age-standardized rates (ASRs) of prevalence, death, disability adjusted life-year (DALY), years of life lost (YLL), and years lived with disability (YLD) at the global, regional, and national levels were acquired from the GBD 2021 database. Trends were evaluated based on the estimated average percentage change (EAPC) of ASRs.

Biosafety and immunology: An interdisciplinary field for health priority.

Biosafety hazards can trigger a host immune response after infection, invasion, or contact with the host. Whether infection with a microorganism results in disease or biosafety concerns depends to a large extent on the immune status of the population. Therefore, it is essential to investigate the immunological characteristics of the host and the mechanisms of biological threats and agents to protect the host more effectively.