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The adult brain lacks sensitivity to changes in the sensory environment found in the juvenile brain. The transplantation of embryonic interneurons has been shown to restore juvenile plasticity to the adult host visual cortex. It is unclear whether transplanted interneurons directly mediate the renewed cortical plasticity or whether these cells act indirectly by modifying the host interneuron circuitry. Here we find that the transplant-induced reorganization of mouse host circuits is specifically mediated by Neuregulin (NRG1)/ErbB4 signaling in host parvalbumin (PV) interneurons. Brief visual deprivation reduces the visual activity of host PV interneurons but has negligible effects on the responses of transplanted PV interneurons. Exogenous NRG1 both prevents the deprivation-induced reduction in the visual responses of host PV interneurons and blocks the transplant-induced reorganization of the host circuit. While deletion of ErbB4 receptors from host PV interneurons blocks cortical plasticity in the transplant recipients, deletion of the receptors from the donor PV interneurons does not. Altogether, our results indicate that transplanted embryonic interneurons reactivate cortical plasticity by rejuvenating the function of host PV interneurons.

Subanesthetic ketamine evokes rapid and long-lasting antidepressant effects in human patients. The mechanism for ketamine's effects remains elusive, but ketamine may broadly modulate brain plasticity processes. We show that single-dose ketamine reactivates adult mouse visual cortical plasticity and promotes functional recovery of visual acuity defects from amblyopia. Ketamine specifically induces downregulation of neuregulin-1 (NRG1) expression in parvalbumin-expressing (PV) inhibitory neurons in mouse visual cortex. NRG1 downregulation in PV neurons co-tracks both the fast onset and sustained decreases in synaptic inhibition to excitatory neurons, along with reduced synaptic excitation to PV neurons in vitro and in vivo following a single ketamine treatment. These effects are blocked by exogenous NRG1 as well as PV targeted receptor knockout. Thus, ketamine reactivation of adult visual cortical plasticity is mediated through rapid and sustained cortical disinhibition via downregulation of PV-specific NRG1 signaling. Our findings reveal the neural plasticity-based mechanism for ketamine-mediated functional recovery from adult amblyopia.

Introduction: The use of plant essential oils as anesthetics for fish has gained increasing attention, but ethanol, often used as a co-solvent, presents certain limitations. Recently, Magnolia denudata essential oil (MDO) has emerged as a promising alternative for fish anesthesia and sedation. Methods and results: To further improve MDO anesthesia efficacy, this study developed nanoemulsion (NE) and self-microemulsifying drug delivery system (SMEDDS) formulations of MDO. Transmission electron microscopy and stability tests confirmed that both NE and SMEDDS possess smaller particle sizes and are stable under various temperature conditions. Anesthetic trials on fish demonstrated that these formulations reduced the time needed to induce anesthesia compared with the non-formulations. Additionally, physiological assessments of the fish gills showed that neither NE nor SMEDDS caused irreversible damage to respiratory function. Discussion: Overall, NE and SMEDDS present a safe and effective delivery system for MDO, enhancing its anesthetic properties while minimizing potential harm to aquatic organisms compared to traditional methods. [ABSTRACT FROM AUTHOR]

Aim of the Study: HBV‐infected individuals are also presenting with MASLD. However, the value of VCTE for detecting hepatic fibrosis and steatosis in CHB patients concurrent with MASLD is unclear. In patients with combined CHB and MASLD, we intend to assess the diagnostic efficacy of VCTE in determining the extent of fibrosis and steatosis. Methods: This retrospective study involved 368 patients diagnosed with chronic HBV infection combined with MASLD who received liver biopsy and VCTE at Xiamen City Traditional Chinese Medicine Hospital from June 2018 to June 2023. The cutoff values for liver stiffness measurement (LSM) and controlled attenuation parameter (CAP) were determined via the use of the cross‐validated area under the receiver operating characteristic (AUROC) curve analyses to identify pairwise fibrosis stage and grade, respectively. The diagnostic statistics were calculated with a 90% fixed sensitivity and 90% specificity. Results: An AUROC of 0.86 (95% CI: 0.76–0.95) was determined by a LSM cutoff value of 11.25 to identify patients with cirrhosis. Patients have the following values: sensitivity, 0.79; specificity, 0.90; PPV, 0.89; and NPV, 0.81. An AUROC of 0.84 (95% CI: 0.76–0.95) was determined by a CAP cutoff value of 313 to identify patients with severe steatotic liver. Patients have the following values: sensitivity, 0.86; specificity, 0.82; PPV, 0.82; and NPV, 0.85. Conclusion:In this investigation of adult patients diagnosed with CHB with MASLD, VCTE demonstrated a robust capability to differentiate cirrhosis and severe steatotic liver. [ABSTRACT FROM AUTHOR]

The bullfrog Aquarana catesbeiana is one of the main farmed frog species in China, with a low overall survival of farmed bullfrogs from hatching to harvest since bullfrog tadpoles are fragile during the metamorphosis period. The intestinal bacterial community can play crucial roles in animal development; however, little is known about the alteration of the gut microbial community of A. catesbeiana during metamorphosis. The present study used 16S rRNA amplicon sequencing to investigate the intestinal bacterial community in A. catesbeiana at four distinct developmental stages. Moreover, we determined the bullfrog's body morphological parameters and the intestine histology at different developmental stages. The results showed a reduction in the total length and snout–vent length of A. catesbeiana during metamorphosis. The intestinal microbial composition of A. catesbeiana exhibited variation throughout the process of metamorphosis. The terrestrial stage showed shifts in the bacterial composition compared to the aquatic stages, including a reduction in Bacteroidetes and an increase in Firmicutes. Furthermore, the presence of Prevotella, Bifidobacterium, Leucobacter, Corynebacterium, Bulleidia, Dorea, Robinsoniella, and Clostridium in A. catesbeiana metamorphosis appears to be mainly related to the host's epithelial cells' height and total body mass. The results indicated that the intestinal microbial composition changed with the bullfrog–tadpole metamorphosis. The genera of Prevotella, Bifidobacterium, Leucobacter, Corynebacterium, Bulleidia, Dorea, Robinsoniella, and Clostridium might be potential probiotics. [ABSTRACT FROM AUTHOR]

This study investigates the effects of the essential oil from Amomum villosum (EOA) on liver-protective effects in Nile tilapia (Oreochromis niloticus), utilizing a multidisciplinary approach that integrates physiological assessments and transcriptomic and metabolomic analyses. Fish were fed diets containing 2 g/kg of EOA over a 56-day trial, with a no-EOA diet serving as the control. The results demonstrate that EOA supplementation improves liver histology, enhances antioxidant capacities, and reduces inflammation in tilapia. The transcriptomic analysis revealed significant alterations in gene expression profiles related to RNA splicing, metabolism, and disease pathways. The identification of differential genes and disease databases identified key target genes associated with the primary component of EOA for its anti-hepatobiliary disease effects. Furthermore, a molecular docking analysis of EOA major components with core differentially expressed genes in the hepatobiliary syndrome indicated that α-pinene is a potential Hsp90 inhibitor, which may prevent inflammation. A metabolomic analysis further demonstrated that EOA supplementation leads to notable changes in liver phospholipids, fatty acids, and carbohydrate metabolism. These findings underscore the potential of EOA as a natural additive for improving liver health in tilapia, offering valuable insights to the aquaculture industry for enhancing fish health and welfare in intensive farming systems. [ABSTRACT FROM AUTHOR]

This paper investigates the role of government-linked companies (GLCs) in public–private partnerships (PPPs) for urban water supply in China. GLCs are corporations in which the government has significant ownership, control and influence while being registered under the same corporate law as private companies. Separate from local governments that own water utilities, they form contractual relationships with local governments (or water utilities owned by local governments) under PPP arrangements, rendering them more accountable and profit-driven. We analyze an emerging PPP model in China's water sector, where GLCs serve as major investors, and assess their effectiveness and limitations. Our findings indicate that the involvement of GLCs improves water utilities' performance, and the quality of their water supply services, while offering potential advantages such as stronger financial capability, higher political risk resistance capacity, and mitigation of public tension. However, concerns persist about risk-sharing, political interference, and local government control. This research contributes to understanding the evolving landscape of PPPs in China's water sector and the potential implications of GLC involvement for urban water supply systems globally. [ABSTRACT FROM AUTHOR]

Aims and Objectives: To evaluate the effectiveness of positive psychological interventions on quality of life, positive psychological outcomes and negative psychological outcomes in patients with cancer. Background: Patients with cancer often suffer from various psychological problems and have a poor quality of life. Positive psychological interventions have been increasingly applied to patients with cancer, but the results of these studies have not been synthesized. Design: A systematic review and meta‐analysis of randomized controlled trials according to PRISMA. Methods: Six English databases and four Chinese databases were searched from the inception to December 2022. Two reviewers independently assessed the risk of bias using the Cochrane Risk of Bias tool. RevMan was used for meta‐analysis. Results: Twenty‐nine randomized controlled trials examined the effects of positive psychological interventions including meaning therapy, dignity therapy, positive psychotherapy, mindfulness‐ based intervention, life review, expressive writing intervention, acceptance and commitment psychotherapy, attention and interpretation therapy, compassion training and spiritual therapy on patients with cancer. Positive psychological interventions significantly improved the quality of life, enhanced positive psychological outcomes including well‐being, meaning of life, self‐esteem, optimism, resilience and self‐efficacy and alleviated negative psychological outcomes including depression, anxiety and hopelessness. However, the heterogeneity of some outcomes was rather high, due to the wide diversity of the interventions included. Conclusion: Positive psychological interventions have potentially positive effects on improving quality of life, enhancing positive psychological outcomes and alleviating negative psychological outcomes in patients with cancer. However, due to the heterogeneity and the lack of follow‐up studies, more high‐quality studies are needed to confirm the results of our review and to clarify the long‐term effects of positive psychological interventions. Relevance to clinical practice: As feasible psychological interventions, healthcare professionals can consider applying appropriate positive psychological interventions according to the condition of cancer patients. Patient or public contribution: No patient or public contribution. [ABSTRACT FROM AUTHOR]

Objective: The study aimed to evaluate the psychometric properties and measurement invariance (MI) of the Chinese version of the cognitive emotion regulation questionnaire‐short (CERQ‐short) in cancer patients. Methods: This cross‐sectional study included 505 cancer patients from mainland China. In addition to sociodemographic and clinical characteristics, the CERQ‐short and the distress thermometer were included in the study measures. Results: Item analysis indicated a promising result. And the results of CFA indicated that the CERQ‐short demonstrated satisfactory factorial validity in cancer patients. Cronbach's alpha coefficients were between 0.663 and 0.910, while McDonald's omega coefficients were between 0.664 and 0.910. The CERQ‐short had sufficient convergent, discriminant and concurrent validity among cancer patients. Lastly, MI supported that the CERQ‐short demonstrated strong measurement equivalence across gender, residence and age. Conclusions: This study shows that the Chinese version of the CERQ‐short has convincing psychometric properties and MI, which supports its use in cancer patients. [ABSTRACT FROM AUTHOR]