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1.
Future Oncol ; : 1-8, 2024 Jul 21.
Article in English | MEDLINE | ID: mdl-39034683

ABSTRACT

Aim: In situ vaccination, a kind of therapeutic cancer vaccine, can be realized by radiotherapy and intratumoral immune injection. This study combines intratumoral injection, radiotherapy and PD-1 blockade for synergistic antitumor effect. Materials & methods: Patients with advanced solid tumors who are unresponsive or intolerant to standard treatment will be treated with hypofractionated radiotherapy, intratumoral injection of FOLactis, PD-1 blockade. The primary end point is to observe the efficacy and safety, with the secondary end point to evaluate abscopal effects and the correlation between the immunological rationale and efficacy. Discussion: The combined regimen will be utilized to trigger antitumor immunity and is expected to be feasible and effective and provide a novel option for the comprehensive treatment of cancer.Clinical Trial Registration: ChiCTR2200060660 (ChiCTR.gov.cn).


[Box: see text].

2.
Future Oncol ; 20(17): 1139-1149, 2024.
Article in English | MEDLINE | ID: mdl-38445361

ABSTRACT

Background: The authors' preclinical study has confirmed that RO adjuvant (composed of TLR 7 agonists [imiquimod/R837] and OX40 agonists) injected into local lesions induces the regression of both primary tumor and distant metastasis. The authors propose to realize local control and exert abscopal effect through an 'R-ISV-RO' in situ strategy plus anti-PD-1 monoclonal antibody in advanced tumors. Methods: This study is a single-center, exploratory, phase II trial to evaluate the efficacy and safety of R-ISV-RO plus anti-PD-1 monoclonal antibody in advanced tumors. 30 patients with one or more measurable extracerebral lesions that are accessible for radiation or injection will be enrolled. The primary endpoint is the objective response rate of target lesions. Discussion/Conclusion: The efficacy and safety of the novel strategy will be further validated through this clinical trial.Clinical trial registration: ChiCTR2100053870 (www.chictr.org.cn/).


[Box: see text].


Subject(s)
Neoplasms , Humans , Neoplasms/drug therapy , Neoplasms/pathology , Female , Male , Middle Aged , Imidazoles/therapeutic use , Imidazoles/administration & dosage , Adult , Oncolytic Virotherapy/methods , Oncolytic Virotherapy/adverse effects , Treatment Outcome , Aged
3.
BMC Microbiol ; 24(1): 96, 2024 Mar 23.
Article in English | MEDLINE | ID: mdl-38521930

ABSTRACT

BACKGROUND: Unbalanced gut microbiota is considered as a pivotal etiological factor in colitis. Nevertheless, the precise influence of the endogenous gut microbiota composition on the therapeutic efficacy of probiotics in colitis remains largely unexplored. RESULTS: In this study, we isolated bacteria from fecal samples of a healthy donor and a patient with ulcerative colitis in remission. Subsequently, we identified three bacterial strains that exhibited a notable ability to ameliorate dextran sulfate sodium (DSS)-induced colitis, as evidenced by increased colon length, reduced disease activity index, and improved histological score. Further analysis revealed that each of Pediococcus acidilactici CGMCC NO.17,943, Enterococcus faecium CGMCC NO.17,944 and Escherichia coli CGMCC NO.17,945 significantly attenuated inflammatory responses and restored gut barrier dysfunction in mice. Mechanistically, bacterial 16S rRNA gene sequencing indicated that these three strains partially restored the overall structure of the gut microbiota disrupted by DSS. Specially, they promoted the growth of Faecalibaculum and Lactobacillus murinus, which were positively correlated with gut barrier function, while suppressing Odoribacter, Rikenella, Oscillibacter and Parasutterella, which were related to inflammation. Additionally, these strains modulated the composition of short chain fatty acids (SCFAs) in the cecal content, leading to an increase in acetate and a decrease in butyrate. Furthermore, the expression of metabolites related receptors, such as receptor G Protein-coupled receptor (GPR) 43, were also affected. Notably, the depletion of endogenous gut microbiota using broad-spectrum antibiotics completely abrogated these protective effects. CONCLUSIONS: Our findings suggest that selected human-derived bacterial strains alleviate experimental colitis and intestinal barrier dysfunction through mediating resident gut microbiota and their metabolites in mice. This study provides valuable insights into the potential therapeutic application of probiotics in the treatment of colitis.


Subject(s)
Colitis, Ulcerative , Colitis , Enterococcus faecium , Gastrointestinal Microbiome , Humans , Animals , Mice , Intestinal Barrier Function , RNA, Ribosomal, 16S/genetics , Colitis/chemically induced , Colitis, Ulcerative/chemically induced , Colitis, Ulcerative/therapy , Bacteroidetes , Escherichia coli , Mice, Inbred C57BL , Disease Models, Animal , Colon
4.
J Intensive Care Med ; 39(4): 368-373, 2024 Apr.
Article in English | MEDLINE | ID: mdl-37877179

ABSTRACT

BACKGROUND: Severe acute pancreatitis (SAP) has a mortality of 30% with no current targeted therapy. The potential protective effect of insulin on AP has been reported and needs to be confirmed. Thus, we aim to examine the effect of insulin treatment on the outcome of AP patients. METHODS: A retrospective study was performed using data from the Medical Information Mart for Intensive Care (MIMIC) database. Kruskal-Wallis test, t-tests, and Pearson's chi-squared test were used to compare differences between groups. Propensity score matching and further nearest neighbor matching were used to construct a matched cohort. Cox proportional hazards regression analyses, logistic regression analyses, and the doubly robust estimation method were used to assess the relationship between insulin use and mortality. RESULTS: Nine hundred patients were enrolled in the final analysis. Insulin was associated with better outcomes in AP patients admitted to ICU, and could act as an independent predictor for 30-day mortality (HR = 0.36, 95% CI = 0.24-0.55). Subgroup analysis showed that AP patients with heart failure or without kidney disease or respiratory failure may not benefit from insulin treatment. CONCLUSIONS: Insulin treatment is independently associated with lower 30-day mortality in AP patients, except for those with heart failure or without kidney disease or respiratory failure.


Subject(s)
Heart Failure , Insulins , Kidney Diseases , Pancreatitis , Respiratory Insufficiency , Humans , Pancreatitis/drug therapy , Retrospective Studies , Cohort Studies , Prognosis , Critical Illness/therapy , Acute Disease , Heart Failure/complications , Kidney Diseases/complications , Intensive Care Units
5.
Environ Sci Pollut Res Int ; 30(56): 118318-118331, 2023 Dec.
Article in English | MEDLINE | ID: mdl-37910374

ABSTRACT

The research uses the K-means clustering algorithm to examine the correlation between ecological restoration assessment, economic development, and investment in sea areas. The study intends to shed light on the dynamics and relationships between these variables and offer insightful information for managing the coastal and marine environments. We have made important discoveries on the effects of ecological restoration and eco-economic development on research investment by thoroughly analyzing data from various indicators, including the ecological index, eco-economic variables, and geographical index. Our findings underscore the significance of protecting marine ecosystems while promoting economic growth by demonstrating the beneficial effects of ecological restoration initiatives on research investment in maritime regions. The report also emphasizes the critical role of eco-economic development in influencing research investment and advancing sustainable practices that balance economic growth and environmental preservation. The results highlight the need for coordinated efforts among local communities, government agencies, academic institutions, business stakeholders, and industry to create comprehensive programs prioritizing ecological restoration, economic development, and research spending. This holistic strategy can support technical advancement, economic diversification, and sustainable development in maritime regions. The study's findings emphasize the importance of coordinating research funding with ecological restoration and eco-economic growth for coastal communities and residents' long-term well-being. Policymakers are urged to prioritize investments in research infrastructure, programs that increase capability, and encouraging regulations that support an environment significant to research and innovation. Stakeholders can use the advantages of research investment, utilize the potential of sea areas, and support the accomplishment of sustainable development goals by implementing these ideas. This study contributes to the existing literature by providing empirical data and insights into the complex relationships between ecological restoration, economic growth, and research expenditures in maritime regions. This paper highlights the study's limitations to encourage further research on new variables and comparisons across various industries and areas. This study provides insights into the importance of incorporating ecological restoration, eco-economic development, and research investment for sustainable coastal and marine management.


Subject(s)
Economic Development , Ecosystem , Sustainable Development , Algorithms , Cluster Analysis , China
6.
MedComm (2020) ; 4(5): e376, 2023 Oct.
Article in English | MEDLINE | ID: mdl-37771912

ABSTRACT

The polymorphic microbiome has been proposed as a new hallmark of cancer. Intratumor microbiome has been revealed to play vital roles in regulating tumor initiation and progression, but the regulatory mechanisms have not been fully uncovered. In this review, we illustrated that similar to other components in the tumor microenvironment, the reside and composition of intratumor microbiome are regulated by tumor cells and the surrounding microenvironment. The intratumor hypoxic, immune suppressive, and highly permeable microenvironment may select certain microbiomes, and tumor cells may directly interact with microbiome via molecular binding or secretions. Conversely, the intratumor microbiomes plays vital roles in regulating tumor initiation and progression via regulating the mutational landscape, the function of genes in tumor cells and modulating the tumor microenvironment, including immunity, inflammation, angiogenesis, stem cell niche, etc. Moreover, intratumor microbiome is regulated by anti-cancer therapies and actively influences therapy response, which could be a therapeutic target or engineered to be a therapy weapon in the clinic. This review highlights the intratumor microbiome as a vital component in the tumor microenvironment, uncovers potential mutual regulatory mechanisms between the tumor microenvironment and intratumor microbiome, and points out the ongoing research directions and drawbacks of the research area, which should broaden our view of microbiome and enlighten further investigation directions.

7.
Front Endocrinol (Lausanne) ; 14: 1164369, 2023.
Article in English | MEDLINE | ID: mdl-37305055

ABSTRACT

Background: Low thyroxine (T4) levels have been observed in critically ill patients; however, controversial results regarding T4 supplemental therapy are reported. The association between serum free T4 (FT4) levels and mortality in critically ill patients has not been fully established and needs to be clarified. Methods: Data from the Medical Information Mart for Intensive Care (MIMIC)-IV were collected and analyzed. The association between FT4 level and 30-day mortality after ICU admission was analyzed using Kaplan-Meier curves, spline smoothing fitting, martingale residuals of the null Cox model, and restricted cubic spline (RCS). Logistic regression, Cox regression, and receiver operating characteristic curve (ROC) were used to uncover the relationship and predictive value of serum FT4 and 30-day mortality in critically ill patients. Results: In the final analysis, 888 patients were enrolled, and the serum FT4 levels were divided into four groups. A significant difference in 30-day mortality was observed between the four groups. Kaplan-Meier curves also presented significantly higher 30-day mortality in groups 1 and 2 (p < 0.0001). Further multivariance logistic regression showed that group 1 with FT4 levels lower than 0.7 µg/dl can predict 30-day mortality (odds ratio (OR) = 3.30, 95% confidence interval (CI) = 1.04-11.31). Spline smoothing fitting analysis showed a "V"-shaped line between 30-day mortality and FT4 level within 0-3 µg/dl. Further RCS analysis showed that the risk of death decreased rapidly as FT4 levels increased when serum FT4 levels were lower than 1.2 µg/dl and started to become flat afterward. The area under the ROC of the lower FT4 level to predict 30-day mortality was 0.833 (95% CI = 0.788-0.878). Both multivariant Cox regression and logistic regression showed that FT4 levels lower than 1.2 µg/dl can independently predict 30-day mortality when adjusted for other potential confounders (HR = 0.34, 95% CI = 0.14-0.82; OR = 0.21, 95% CI = 0.06-0.79, respectively), but its predictive power disappeared when adjusted for T3 or total T4. Conclusion: Serum FT4 levels were significantly negatively associated with 30-day mortality when they were lower than 1.2 µg/dl and could predict the risk of 30-day mortality. A higher FT4 level is potentially related to increased 30-day mortality.


Subject(s)
Critical Illness , Thyroxine , Humans , Retrospective Studies , Thyroid Function Tests , Critical Care
8.
Neurochem Res ; 48(8): 2514-2530, 2023 Aug.
Article in English | MEDLINE | ID: mdl-37036545

ABSTRACT

Depression is a common, severe, and debilitating psychiatric disorder of unclear etiology. Our previous study has shown that protein phosphatase Mg2+/Mn2+-dependent 1F (PPM1F) in the hippocampal dentate gyrus (DG) displays significant regulatory effects in depression-related behaviors. miR-132-3p plays a potential role in the etiology of depression. This study explored the effect of miR-132-3p on the onset of depression and the possible underlying mechanism for modulating PPM1F expression during the pathology of depression. We found that miR-132-3p levels in the hippocampus of depressed mice subjected to chronic unpredictable stress (CUS) were dramatically reduced, which were correlated with depression-related behaviors. Knockdown of miR-132-3p in hippocampal DG resulted in depression-related phenotypes and increased susceptibility to stress. miR-132-3p overexpression in hippocampal DG alleviated CUS-induced depression-related performance. We then screened out the potential target genes of miR-132-3p, and we found that the expression profiles of sterol regulatory element-binding transcription factor 1 (Srebf1) and forkhead box protein O3a (FOXO3a) were positively correlated with PPM1F under the condition of miR-132-3p knockdown. Finally, as anticipated, we revealed that the activities of Ca2+/calmodulin-dependent protein kinase II (CAMKII) and adenosine 5'-monophosphate (AMP)-activated protein kinase (AMPK) were reduced, which underlies the target signaling pathway of PPM1F. In conclusion, our study suggests that miR-132-3p was designed to regulate depression-related behaviors by indirectly regulating PPM1F and targeting Srebf1 and FOXO3a, which have been linked to the pathogenesis and treatment of depression.


Subject(s)
MicroRNAs , Mice , Animals , MicroRNAs/genetics , MicroRNAs/metabolism , Magnesium , Depression/genetics , Phosphoprotein Phosphatases/genetics , Phosphoprotein Phosphatases/metabolism , Hippocampus/metabolism
9.
Front Immunol ; 14: 1153344, 2023.
Article in English | MEDLINE | ID: mdl-36936941

ABSTRACT

Comorbidities due to inflammatory bowel disease (IBD) and anxiety are commonly acknowledged; however, their underlying basis is unclear. In the current study, we first conducted a clinical retrospective analysis to identify the enhancive incidence rate of IBD before or after the epidemic of Corona Virus Disease 2019 (COVID-19), with higher Generalized Anxiety Disorder-7 (GAD-7), as well as poorer Gastrointestinal Quality of Life Index (GIQLI). Then, the dextran sodium sulfate (DSS) and chronic unpredictable stress (CUS)-induced IBD and anxiety comorbid models were established with the correlational relations between symptoms of IBD and anxiety-related behaviors. We found dysfunctional up-regulation of a new inflammatory factor interleukin (IL)-19 in the colon of DSS/CUS treated mice. Overexpression of IL-19 in colon induced anxious phenotypes, and accelerated the anxious condition and symptoms of colitis in the DSS/CUS model by promoting the expression of inducible nitric oxide synthase (iNOS), IL-1ß, and IL-6 pro-inflammatory factors, and activating signal transducer and activator of transcription 3 (STAT3) signaling pathway in the colon. Furthermore, overexpression of IL-19 in the colon also reduced the expression levels of brain-derived neurotrophic factor (BDNF), extracellular signal-regulated kinase (ERK), and cAMP-response element binding protein (CREB) signaling pathways activity in the hippocampus. These results suggest that IL-19 was a pivotal player in DSS/CUS-induced comorbidities of colitis and anxiety with different signaling pathways for the colon and hippocampus, which provides a candidate gene to explore the pathophysiology of comorbidities due to colitis and anxiety.


Subject(s)
Anxiety , Colitis , Interleukins , Animals , Mice , Colitis/chemically induced , Colitis/immunology , Dextran Sulfate/adverse effects , Quality of Life , Retrospective Studies
10.
Environ Sci Pollut Res Int ; 30(11): 31524-31532, 2023 Mar.
Article in English | MEDLINE | ID: mdl-36449239

ABSTRACT

Over the years, the development of marine economy has been an important component of coastal cities' total economic growth in China. Whether the coastal cities had paid enough attention to the coordination of marine economic development and ecological environment protection in the process of marine development activities needed to be evaluated accordingly. An index evaluation system for the coordination between marine ecological environment protection and marine economic development in coastal cities of China was established in this work by using the analytic hierarchy process. The statistical analysis results from 2006 to 2018 showed that much more attention had been paid on marine ecological environment protection since the year 2012 in China. The evaluated results showed that among all coastal provinces and cities, Shanghai and Shandong Provinces had the best coordination between marine economic development and marine ecological environment protection in the year 2016. Years of data showed that marine economic development and marine ecological environmental protection complement each other and promote each other. At the same time, the analysis results of this indicator evaluation system showed that marine ecological environment protection in China should further strengthen the protection by preventing and controlling marine pollution and carrying out ecological restoration.


Subject(s)
Conservation of Natural Resources , Economic Development , China , Conservation of Natural Resources/methods , Cities , Environmental Pollution
12.
Neurobiol Dis ; 174: 105890, 2022 Nov.
Article in English | MEDLINE | ID: mdl-36220611

ABSTRACT

The dysregulation of neuronal networks contributes to the etiology of psychiatric diseases, including anxiety. However, the neural circuits underlying anxiety symptoms remain unidentified. We observed acute restraint stress activating excitatory neurons in the paraventricular thalamus (PVT). Activation of PVT neurons caused anxious behaviors, whereas suppression of PVT neuronal activity induced an anxiolytic effect, achieved by using a chemogenetic method. Moreover, we found that the PVT neurons showed plentiful neuronal projections to the bed nucleus of the stria terminalis (BNST). Activation of PVT-BNST neural projections increased the susceptibility of stress-induced anxiety-related behaviors, and inhibition of this neural circuit produced anxiolysis. The insular cortex (IC) is an important upstream region projecting to PVT. Activation of IC-PVT neuronal projections enhanced susceptibility to stress induced anxious behaviors. Inhibiting this neural circuit suppressed anxious behaviors. Moreover, anterograde monosynaptic tracing results showed that the IC exerts strong neuronal projections to PVT, forming synaptic connections with its neurons, and these neurons throw extensive neuronal fibers to form synapse with BNST neurons. Finally, our results showed that ablation of neurons in PVT receiving monosynaptic input from IC attenuated the anxiety-related phenotypes induced by activating IC neurons. Lesions of the neurons in BNST synaptic origination from PVT blocked the anxiety-related phenotypes induced by activating PVT neurons. Our findings indicate that the PVT is a crucial anxiety-regulating nucleus, and the IC-PVT-BNST neural projection is an essential pathway affecting anxiety morbidity and treatment.


Subject(s)
Septal Nuclei , Septal Nuclei/physiology , Insular Cortex , Thalamus , Anxiety , Neurons , Neural Pathways/physiology
13.
Microorganisms ; 10(7)2022 Jul 01.
Article in English | MEDLINE | ID: mdl-35889058

ABSTRACT

Sedimentary microorganisms play crucial roles in maintaining the functional stability of aquatic ecosystems. However, their taxonomic composition and assembly processes are not well known in estuarine−coastal margins because of their complex environment. We investigated microbial communities, co-occurrence relationships, and underlying mechanisms in 33 surface sediment samples collected in the Jiulong River Estuary and the Taiwan Strait to reveal their composition dynamics. The abundance, diversity, and composition of microorganisms demonstrated obvious spatial variables. Methanobacterium and Methanosarcina, as well as Candidatus_Nitrosopumilus and Nitrososphaeraceae were the main methanogenic and ammonia-oxidizing archaea, with an average abundance of more than 5.91% and 4.27%, respectively. Along with a salinity gradient increase, the relative abundance of methanogenic archaea (from 42.9% to 16.6%) contrasted with the trend of ammonia-oxidizing archaea (from 6.04% to 18.7%). The number of methanogenic archaea gradually decreased with increasing geographic distance (p < 0.05), whereas ammonia-oxidizing archaea showed no significant change (p > 0.05). In co-occurrence patterns, closer inter-taxa connections were observed among archaea−archaea and bacteria−bacteria than in archaea−bacteria, which indicated that coexistence within the same kingdom was greater than interaction between different kingdoms in shaping the community structure along the salinity gradient. Furthermore, null model analyses of the microbial community showed that undominated was the most prominent process, explaining over 44.9% of community variation, followed by heterogeneous selection and dispersal limitation, which contributed to 27.7% and 16.3%, respectively. We demonstrated that stochasticity, rather than determinism, regulates community assembly. These results further highlight that intra-kingdom co-occurrence and stochastic processes shape the structure and assembly of microbial communities in estuarine−coastal margins.

14.
Brain Res ; 1790: 147983, 2022 09 01.
Article in English | MEDLINE | ID: mdl-35709892

ABSTRACT

Alzheimer disease (AD) is a neurodegenerative disorder, which is characterized by progressive impairment of memory and cognition. Early diagnosis and treatment of AD has become a leading topic of research. In this study, we explored the effects of the miR-132-3p/FOXO3a-PPM1F axis on the onset of AD for possible early diagnosis and therapy. We found that miR-132-3p levels in the hippocampus and blood were drastically decreased in APP/PS1 mice from 9 months of age, and bi-directional manipulation of miR-132-3p levels induced magnified effects on learning memory behaviors, and manifestation of AD-related pathological characteristics and inflammatory cytokines in APP/PS1 mice of relevant ages. The hippocampal PPM1F expression levels were significantly elevated in APP/PS1 mice from 3 months of age, which was correlated with miR-132-3p levels at different ages. Overexpression of PPM1F remarkably accelerated the progression of learning memory deficits and associated pathological factors in APP/PS1 mice. Further, we showed that miR-132-3p modulated the expression of PPM1F via FOXO3a in HT22 cells. Finally, using peripheral blood samples of human study participants, we found that the miR-132-3p and PPM1F expression levels in patients with AD were also altered with prominent correlations. In conclusion, miR-132-3p indirectly regulates PPM1F expression by targeting FOXO3a, which could play an extensive role in contributing to the establishment of early diagnosis, treatment, and pathogenesis of AD.


Subject(s)
Alzheimer Disease , MicroRNAs , Alzheimer Disease/diagnosis , Alzheimer Disease/drug therapy , Alzheimer Disease/genetics , Amyloid beta-Peptides/metabolism , Amyloid beta-Protein Precursor/genetics , Amyloid beta-Protein Precursor/metabolism , Animals , Disease Models, Animal , Hippocampus/metabolism , Humans , Maze Learning , Mice , Mice, Transgenic , MicroRNAs/metabolism , Phosphoprotein Phosphatases/metabolism , Phosphoprotein Phosphatases/pharmacology , Phosphoprotein Phosphatases/therapeutic use , Presenilin-1/genetics , Presenilin-1/metabolism
16.
Article in English | MEDLINE | ID: mdl-35206636

ABSTRACT

Organophosphate ester flame retardants (OPFRs) are widely prevalent in the environment and are of significant concern because of their potential toxicity to human health and wildlife. In this study, the concentration, frequency, spatial distribution, potential sources, and ecological risks of OPFRs in sediments from the Jiulong River estuary and the adjacent western Taiwan Strait were investigated. Concentrations of four of the five studied OPFRs were between

Subject(s)
Flame Retardants , China , Environmental Monitoring , Estuaries , Flame Retardants/analysis , Humans , Organophosphates/analysis , Rivers , Taiwan
17.
Nat Prod Res ; 36(24): 6215-6223, 2022 Dec.
Article in English | MEDLINE | ID: mdl-35007168

ABSTRACT

Three new aaptamines (1-3) together with two known derivatives (4-5) were isolated from the South China Sea sponge Aaptos suberitoides. The structures of all compounds were unambiguously elucidated by spectroscopic analyses as well as the comparison with literature data. All the compounds were evaluated for their cytotoxic activities against five human cancer cell lines including H1299, H520, SCG7901, CNE-2 and SW680 cells. As a result, compounds 3-5 showed moderate cytotoxicities against H1299 and H520 cells with IC50 values ranging from 12.9 to 20.6 µg/mL. Besides, compounds 3-5 also showed potent inhibitory activities toward cyclin-dependent kinase-2 (CDK2) with IC50 values of 14.3, 3.0 and 6.0 µg/mL, respectively. In addition, compounds 3-5 significantly induced G1 arrests of H1299 cells at low concentrations. Drug affinity responsive target stability (DARTS) experiments were carried out and further demonstrated that compound 3 could effectively bind with CDK2 protein and protect it from the degradation by pronase.


Subject(s)
Antineoplastic Agents , Naphthyridines , Humans , Naphthyridines/chemistry , Antineoplastic Agents/pharmacology , Antineoplastic Agents/chemistry , China , Cell Line, Tumor , Cyclin-Dependent Kinase 2
18.
Brain Res Bull ; 179: 36-48, 2022 02.
Article in English | MEDLINE | ID: mdl-34871711

ABSTRACT

Methamphetamine (METH), a synthetically produced central nervous system stimulant, is one of the most illicit and addictive drugs worldwide. Protein phosphatase Mg2 + /Mn2 + -dependent 1F F (PPM1F) has been reported to exert multiple biological and cellular functions. Nevertheless, the effects of PPM1F and its neuronal substrates on METH addiction remain unclear. Herein, we first established a METH-induced conditioned place preference (CPP) mouse model. We showed that PPM1F is widely distributed in 5-HT neurons of the dorsal raphe nucleus (DRN), and METH treatment decreased the expression of PPM1F in DRN, which was negatively correlated with METH-induced CPP behaviors. Knockout of PPM1F mediated by adeno-associated virus (AAV) in DRN produced enhanced susceptibility to METH-induced CPP, whereas the overexpression of PPM1F in DRN attenuated METH-induced CPP phenotypes. The expression levels of Tryptophan hydroxylase2 (TPH2) and serotonin transporter (SERT) were down-regulated with a concurrent reduction in 5-hydroxytryptamine (5-HT), tryptophan hydroxylase2 (TPH2)-immunoreactivity neurons and 5-HT levels in DRN of PPM1F knockout mice. In the end, decreased expression levels of PPM1F were found in the blood of METH abusers and METH-taking mice. These results suggest that PPM1F in DRN 5-HT neurons regulates METH-induced CPP behaviors by modulating the key components of the 5-HT neurotransmitter system, which might be an important pathological gene and diagnostic marker for METH-induced addiction.


Subject(s)
Behavior, Animal/drug effects , Central Nervous System Stimulants/pharmacology , Dorsal Raphe Nucleus/drug effects , Methamphetamine/pharmacology , Phosphoprotein Phosphatases/drug effects , Serotonergic Neurons/drug effects , Animals , Conditioning, Classical/drug effects , Disease Models, Animal , Mice , Mice, Knockout , Phosphoprotein Phosphatases/deficiency , Phosphoprotein Phosphatases/metabolism
19.
Environ Sci Pollut Res Int ; 29(5): 7595-7603, 2022 Jan.
Article in English | MEDLINE | ID: mdl-34476709

ABSTRACT

The present article introduces the concept of ecological assessment of reclamation projects. In addition, we built a framework that considers structure, function, and ecosystem services for the assessment of the impact of reclamation projects on marine ecology. Moreover, this study explored different technical methods for the ecological assessment of reclamation projects, with an emphasis on those that evaluate the impacts of reclamation on marine ecosystems structure. The present research provides technical support for the recognition and diagnosis of marine ecology problems that are the result of reclamation projects, introduces a guideline for the development of ecological restoration projects, assists in protecting coastal wetland ecosystems, promotes the scientific and reasonable management and control of reclamation, and helps in maintaining the regional marine ecological security pattern.


Subject(s)
Ecosystem , Marine Biology , China , Conservation of Natural Resources , Ecology , Wetlands
20.
Transl Neurosci ; 12(1): 469-481, 2021 Jan 01.
Article in English | MEDLINE | ID: mdl-34900345

ABSTRACT

OBJECTIVES: Cryptotanshinone (CPT), a natural quinoid diterpene, isolated from Salvia miltiorrhiza, has shown various pharmacological properties. However, its effect on chronic unpredictable stress (CUS)-induced depression phenotypes and the underlying mechanism remain unclear. Therefore, the aim of this study was to investigate whether CPT could exert an antidepressant effect. METHODS: We investigated the effects of CPT in a CUS-induced depression model and explored whether these effects were related to the anti-inflammatory and neurogenesis promoting properties by investigating the expression levels of various signaling molecules at the mRNA and protein levels. RESULTS: Administration of CPT improved depression-like behaviors in CUS-induced mice. CPT administration increased the levels of doublecortin-positive cells and reversed the decrease in the expression levels of brain-derived neurotrophic factor (BDNF)/tyrosine kinase receptor B (TrkB) signaling transduction, as well as the downstream functional proteins, phosphorylated extracellular regulated protein kinases (p-ERK), and cyclic adenosine monophosphate (cAMP)-response element-binding protein levels (p-CREB) in hippocampus. CPT treatment also inhibited the activation of microglia and suppressed M1 microglial polarization, while promoting M2 microglial polarization by monitoring the expression levels of arginase 1 (Arg-1) and inducible nitric oxide synthase (iNOS), and further inhibited the expression of proinflammatory cytokines, including interleukin (IL)-1, IL-6, and tumor necrosis factor-α (TNF-α), and increased the expression of the anti-inflammatory cytokine IL-10 by regulating nuclear factor-κB (NF-κB) activation. CONCLUSIONS: CPT relieves the depressive-like state in CUS-induced mice by enhancing neurogenesis and inhibiting inflammation through the BDNF/TrkB and NF-κB pathways and could therefore serve as a promising candidate for the treatment of depression.

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