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Human embryonic stem cells and human induced pluripotent stem cells may be used to create 3D tissues called brain organoids. They duplicate the physiological and pathological characteristics of human brain tissue more faithfully in terms of both structure and function, and they more precisely resemble the morphology and cellular structure of the human embryonic brain. This makes them valuable models for both drug screening and in vitro studies on the development of the human brain and associated disorders. The technical breakthroughs enabled by brain organoids have a significant impact on the research of different brain regions, brain development and sickness, the connections between the brain and other tissues and organs, and brain evolution. This article discusses the development of brain organoids, their use in diabetes research, and their progress.
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Encéfalo , Diabetes Mellitus , Organoides , Humanos , Organoides/patologia , Encéfalo/patologia , Diabetes Mellitus/patologia , Animais , Células-Tronco Pluripotentes Induzidas/citologia , Pesquisa BiomédicaRESUMO
Epidemiological studies have shown that coke oven emissions (COEs) affect the deterioration of asthma, but has not been proven by experimental results. In this study, we found for the first time that COEs exacerbate allergen house dust mite (HDM)-induced allergic asthma in the mouse model. The findings reveal that airway inflammation, airway remodeling and allergic reaction were aggravated in the COE + HDM combined exposure group compared with the individual exposure group. Mechanism studies indicated higher levels of iron and MDA in the COE + HDM combined exposure group, along with increased expression of Ptgs2 and reduced GPX4 expression. Iron chelator deferoxamine (DFO) effectively inhibited ferroptosis induced by COE synergistically with HDM in vitro. Further studies highlighted the role of ferritinophagy in the COE + HDM-induced ferroptosis. 3-methyladenine (3-MA) could inhibit ferroptosis in the COE + HDM exposure group. Interestingly, we injected DFO intraperitoneally into mice in the combined exposure group and found DFO could significantly inhibit the COE-exacerbated ferroptosis and allergic asthma. Our findings link ferroptosis with COE-exacerbated allergic asthma, implying that ferroptosis may have important therapeutic potential for asthma in patients with occupational exposure of COE.
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Background: Online psychological surveys allow for swift data collection among college students, thus providing a foundation for psychological interventions, particularly during emergent public health events. However, the association between online survey completion behaviors and offline psychological symptoms has yet to be explored. Methods: A large-scale web-based survey was conducted from December 31, 2022, to January 7, 2023, involving 22,624 participants. Psychological symptoms were assessed using standardized measures, while the time taken to complete the survey and the time of completion were recorded by the online survey platform. Results: As the time duration increased, the prevalence of anxiety, depression, insomnia, and PTSD also increased significantly (P for trend < 0.001). The highest odds ratios were observed in the longer duration group. Only a longer duration was significantly associated with PTSD. The time period for completing the questionnaire from 7 p.m. to 10 p.m. was found to be significantly linked with anxiety symptoms and depression symptoms. Conversely, completing the questionnaire at other times was specifically associated with anxiety symptoms and insomnia symptoms. The prolonged duration needed to complete the questionnaire was more closely related to the comorbidity of anxiety, depression, and insomnia than to the comorbidity of those symptoms with PTSD. When questionnaires were completed during other times, specifically referring to the late-night and early morning hours, individuals were more likely to exhibit comorbid symptoms of insomnia. Conclusion: The study identified the specific associations between time durations, time points for completing online survey, and psychological symptoms/comorbidity among college students. Further exploration of their causal relationships and the underlying mechanisms is warranted.
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Ansiedade , Depressão , Internet , Distúrbios do Início e da Manutenção do Sono , Estudantes , Humanos , Estudantes/psicologia , Estudantes/estatística & dados numéricos , Feminino , Masculino , China/epidemiologia , Inquéritos e Questionários , Universidades , Ansiedade/epidemiologia , Depressão/epidemiologia , Adulto Jovem , Distúrbios do Início e da Manutenção do Sono/epidemiologia , Fatores de Tempo , Adolescente , Transtornos de Estresse Pós-Traumáticos/epidemiologia , Adulto , PrevalênciaRESUMO
Tendon stem/progenitor cell (TSPC) senescence is often associated with age-dependent tendon diseases and greatly reduces the capacities for tendon repair and replacement. Exosomes contain bioactive molecules and have been increasingly used in regenerative medicine. In the present study, we demonstrated the antiaging effects of young exosomes from circPVT1-overexpressing TSPCs at early passages (circPVT1-exo). These exosomes attenuated the phenotypes of aged TSPCs at late passages (L-TSPCs) by enhancing self-renewal and proliferation abilities, suppressing cell senescence, maintaining their tenogenic capacity, and weakening their osteogenic differentiation. Mechanistically, circPVT1-exo inhibited the NF-κB pathway and increased SIRT1 expression in L-TSPCs. Knockdown of SIRT1 reversed these effects as evidenced by increased senescence, decreased proliferation, and tenogenic differentiation. These results suggest that circPVT1-exo may ameliorate aging-impaired TSPC function by modulating the SIRT1/NF-κB pathway, suggesting that circPVT1-exo has therapeutic potential for age-related diseases.
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Senescência Celular , Exossomos , NF-kappa B , Sirtuína 1 , Sirtuína 1/metabolismo , NF-kappa B/metabolismo , Exossomos/metabolismo , Senescência Celular/efeitos dos fármacos , Animais , Células-Tronco/metabolismo , Células-Tronco/citologia , Tendões/patologia , Tendões/metabolismo , Proliferação de Células , RNA Circular/genética , RNA Circular/metabolismo , Humanos , Transdução de Sinais , Diferenciação Celular , RNA Longo não Codificante/genética , RNA Longo não Codificante/metabolismo , Envelhecimento , Osteogênese/efeitos dos fármacos , MasculinoRESUMO
BACKGROUND: Bladder prolapse is a common clinical disorder of pelvic floor dysfunction in women, and early diagnosis and treatment can help them recover. Pelvic magnetic resonance imaging (MRI) is one of the most important methods used by physicians to diagnose bladder prolapse; however, it is highly subjective and largely dependent on the clinical experience of physicians. The application of computer-aided diagnostic techniques to achieve a graded diagnosis of bladder prolapse can help improve its accuracy and shorten the learning curve. PURPOSE: The purpose of this study is to combine convolutional neural network (CNN) and vision transformer (ViT) for grading bladder prolapse in place of traditional neural networks, and to incorporate attention mechanisms into mobile vision transformer (MobileViT) for assisting in the grading of bladder prolapse. METHODS: This study focuses on the grading of bladder prolapse in pelvic organs using a combination of a CNN and a ViT. First, this study used MobileNetV2 to extract the local features of the images. Next, a ViT was used to extract the global features by modeling the non-local dependencies at a distance. Finally, a channel attention module (i.e., squeeze-and-excitation network) was used to improve the feature extraction network and enhance its feature representation capability. The final grading of the degree of bladder prolapse was thus achieved. RESULTS: Using pelvic MRI images provided by a Huzhou Maternal and Child Health Care Hospital, this study used the proposed method to grade patients with bladder prolapse. The accuracy, Kappa value, sensitivity, specificity, precision, and area under the curve of our method were 86.34%, 78.27%, 83.75%, 95.43%, 85.70%, and 95.05%, respectively. In comparison with other CNN models, the proposed method performed better. CONCLUSIONS: Thus, the model based on attention mechanisms exhibits better classification performance than existing methods for grading bladder prolapse in pelvic organs, and it can effectively assist physicians in achieving a more accurate bladder prolapse diagnosis.
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Imageamento por Ressonância Magnética , Imageamento por Ressonância Magnética/métodos , Humanos , Feminino , Redes Neurais de Computação , Processamento de Imagem Assistida por Computador/métodos , Pelve/diagnóstico por imagem , Doenças da Bexiga Urinária/diagnóstico por imagemRESUMO
Exposure to fine particulate matter (PM) is associated with the neurodegenerative diseases. Coke oven emissions (COEs) in occupational environment are important sources of PM. However, its neurotoxicity is still unclear. Therefore, evaluating the toxicological effects of COE on the nervous system is necessary. In the present study, we constructed mouse models of COE exposure by tracheal instillation. Mice exposed to COE showed signs of cognitive impairment. This was accompanied by a decrease in miR-145a-5p and an increase in SIK1 expression in the hippocampus, along with synaptic structural damage. Our results demonstrated that COE-induced miR-145a-5p downregulation could increase the expression of SIK1 and phosphorylated SIK1, inhibiting the cAMP/PKA/CREB pathway by activating PDE4D, which was associated with reduced synaptic structural plasticity. Furthermore, restoring of miR-145a-5p expression based on COE exposure in HT22 cells could partially reversed the negative effects of COE exposure through the SIK1/PDE4D/cAMP axis. Collectively, our findings link epigenetic regulation with COE-induced neurotoxicity and imply that miR-145a-5p could be an early diagnostic marker for neurological diseases in patients with COE occupational exposure.
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Disfunção Cognitiva , Nucleotídeo Cíclico Fosfodiesterase do Tipo 4 , MicroRNAs , Plasticidade Neuronal , Proteínas Serina-Treonina Quinases , Animais , MicroRNAs/genética , Camundongos , Disfunção Cognitiva/induzido quimicamente , Plasticidade Neuronal/efeitos dos fármacos , Masculino , Nucleotídeo Cíclico Fosfodiesterase do Tipo 4/genética , Proteínas Serina-Treonina Quinases/genética , Proteínas Serina-Treonina Quinases/metabolismo , AMP Cíclico/metabolismo , Hipocampo/efeitos dos fármacos , Camundongos Endogâmicos C57BL , Poluentes Atmosféricos/toxicidade , Material Particulado/toxicidadeRESUMO
Background: Health workers involved in the fight to prevent the COVID-19 outbreak were exposed to hazards. Detailed information on mental health problems in different medical occupations is crucial. To examined the prevalence of mental health issues in three medical occupations as well as the relationships between mental health problems and correlates in each occupation. Methods: This study utilizing the Questionnaire Star program was conducted among medical workers working at medical institutions in China from February 17 to 24, 2020. The Self-Reporting Questionnaire (SRQ-20), the Zung Self-rating Anxiety Scale (SAS), and the Zung Self-rating Depression Scale (SDS) were used to assess mental health problems. Results: The prevalence of any mental health problems in the three occupations was 43.6, 34.6, and 32.9% for nurses, paramedical workers (PMWs), and doctors, respectively. Three occupations shared some correlates, such as being overworked, not having enough time to rest, support from colleagues, and previous mental health status. There were specific factors for each occupation. For doctors, age, educational level, living status, support from family, and previous physical status were related factors in mental health problems. Working in a designated hospital for treating COVID-19, having COVID-19 event exposures, and receiving support from family were associated with the mental health problems of the nurses. PMWs' mental health problems was linked to educational level and care from supervisors or heads of department. Conclusion: Different medical occupations have distinct impacts on mental health issues. Policy makers and mental health professionals working to prepare for potential disease outbreaks should be aware of multiple factors in different occupations.
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COVID-19 , Humanos , COVID-19/epidemiologia , Saúde Mental , Prevalência , SARS-CoV-2 , Ansiedade/epidemiologia , Ansiedade/psicologia , Surtos de Doenças , OcupaçõesRESUMO
PURPOSE: Melasma remains a refractory skin condition that needs to be actively explored. Azelaic acid has been used for decades as a topical agent to improve melasma through multiple mechanisms, however, there is a lack of research on its combination with laser therapy. This study evaluated the effectiveness of isolated treatment with topical 20% azelaic acid and its combination with 755-nm picosecond laser in facial melasma patients. METHODS: A randomized, evaluator-blinded, controlled study was conducted on 30 subjects with facial melasma in a single center from October 2021 to April 2022. All subjects received topical 20% azelaic acid cream (AA) for 24 weeks, and after 4 weeks, a hemiface was randomly assigned to receive 755-nm picosecond (PS) laser therapy once every 4 weeks for 3 treatments. Treatment efficacy was determined by mMASI score evaluations, dermoscopic assessment, reflectance confocal microscopy (RCM) assessments and patient's satisfaction assessments (PSA). RESULTS: Treatment with 20% azelaic acid, with or without picosecond laser therapy, significantly reduced the hemi-mMASI score (P < 0.0001) and resulted in higher patient satisfaction. Improvements in dermoscopic and RCM assessments were observed in both sides of the face over time, with no difference between the two sides. RCM exhibited better dentritic cell improvement in the combined treatment side. No patients had serious adverse effects at the end of treatment or during the follow-up period. CONCLUSION: The additional use of picosecond laser therapy showed no clinical difference except for subtle differences detected by RCM assessments.The study was registered in the Chinese Clinical Trial Registry (ChiCTR2100051294; 18 September 2021).
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Ácidos Dicarboxílicos , Lasers de Estado Sólido , Melanose , Humanos , Melanose/terapia , Melanose/radioterapia , Feminino , Ácidos Dicarboxílicos/uso terapêutico , Ácidos Dicarboxílicos/administração & dosagem , Adulto , Pessoa de Meia-Idade , Lasers de Estado Sólido/uso terapêutico , Masculino , Resultado do Tratamento , Terapia com Luz de Baixa Intensidade/métodos , Fármacos Dermatológicos/uso terapêutico , Fármacos Dermatológicos/administração & dosagem , Terapia Combinada , Satisfação do Paciente , Administração Tópica , Método Simples-CegoRESUMO
TurboID is a highly efficient biotin-labelling enzyme, which can be used to explore a number of new intercalating proteins due to the very transient binding and catalytic functions of many proteins. TGF-ß/Smad3 signaling pathway is involved in many diseases, especially in diabetic nephropathy and inflammation. In this paper, a stably cell line transfected with Smad3 were constructed by using lentiviral infection. To further investigate the function of TGF-ß/Smad3, the protein labeling experiment was conducted to find the interacting protein with Smad3 gene. Label-free mass spectrometry analysis was performed to obtain 491 interacting proteins, and the interacting protein hnRNPM was selected for IP and immunofluorescence verification, and it was verified that the Smad3 gene had a certain promoting effect on the expression of hnRNPM gene, and then had an inhibitory effect on IL-6. It lays a foundation for further study of the function of Smad3 gene and its involved regulatory network.
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Proteína Smad3 , Proteína Smad3/metabolismo , Proteína Smad3/genética , Humanos , Células HEK293 , Interleucina-6/metabolismo , Interleucina-6/genética , Fator de Crescimento Transformador beta/metabolismo , Fator de Crescimento Transformador beta/genética , Transdução de SinaisRESUMO
BACKGROUND: Atopic dermatitis (AD) is a chronic inflammatory skin disorder impacting populations worldwide, although its clinical characteristics and patient demographics remain uncharacterized in China. The aim of this study was to investigate the demographics, comorbidities, aggravating factors, and treatments in AD patients across different age groups in China. METHODS: This cross-sectional study included Chinese AD patients from 205 hospitals spanning 30 provinces. Patients completed dermatologist-led surveys of general medical history, comorbidities, AD-related aggravating factors, and medications. Two-level mixed-ordered logistic regression was used to evaluate aggravating factors. RESULTS: Overall, 16,838 respondents were included in the final analysis (age 30.9 ± 24.1 years). The proportion of severe AD was the highest in patients with AD onset at ≥60 years (26.73%). Allergic rhinitis and hypertension were the most common atopic and metabolism-related non-atopic comorbidities, respectively. AD severity was significantly associated with chronic urticaria, food allergies, and diabetes. Aggravating factors including foods, seasonal changes, and psychological factors were also linked to AD severity. The cross-sectional survey implied that severe AD may be related to the undertreatment of effective systemic or topical interventions. CONCLUSION: To enhance the management of AD, it is crucial to consider both aggravating factors and the increased utilization of systemic immunotherapy. REGISTRATION: ClinicalTrials.gov Identifier: NCT05316805, CORNERSTONE.
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Renal tubular epithelial cells are one of the essential functional cells in the kidney. Optimizing the isolation and culture method of primary renal tubular epithelial cells from SD mammary rats provides better experimental materials for renal tubule-related studies, which is essential for studying the pathogenesis of renal diseases, especially diabetic nephropathy and drug screening. SD rat renal tubular epithelial cells were isolated and purified by 2.5-mg/ml collagenase II or 2 mg/ml trypsin + 2.5 mg/ml collagenase II enzymatic digestion. The isolation and purification were observed at different time points (15 min, 30 min, 45 min, and 60 min) to determine the optimal extraction time for the enzymatic digestion method. After comparing the two enzymatic methods, it was determined that the trypsin + collagenase II enzymatic method was more effective. The primary renal tubular epithelial cells extracted by the trypsin + collagenase II digestion method were identified by the marker Cytokeratin 18 of renal tubular epithelial cells at 45 min of digestion with high purity. We established a simple, efficient, and reproducible method for isolation and culture of renal tubular epithelial cells in SD mammary gland rats.
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The aim of this study was to examine the expression changes of H2S, IGF-1, and GH in traumatic brain injury (TBI) patients and to detect their neuroprotective functions after TBI. In this study, we first collected cerebrospinal fluid (CSF) and plasma from TBI patients at different times after injury and evaluated the concentrations of H2S, IGF-1, and GH. In vitro studies were using the scratch-induced injury model and cell-cell interaction model (HT22 hippocampal neurons co-cultured with LPS-induced BV2 microglia cells). In vivo studies were using the controlled cortical impact (CCI) model in mice. Cell viability was assessed by CCK-8 assay. Pro-inflammatory cytokines expression was determined by qRT-PCR, ELISA, and nitric oxide production. Western blot was performed to assess the expression of CBS, CSE, IGF-1, and GHRH. Moreover, the recovery of TBI mice was evaluated for behavioral function by applying the modified Neurological Severity Score (mNSS), the Rotarod test, and the Morris water maze. We discovered that serum H2S, CSF H2S, and serum IGF-1 concentrations were all adversely associated with the severity of the TBI, while the concentrations of IGF-1 and GH in CSF and GH in the serum were all positively related to TBI severity. Experiments in vitro and in vivo indicated that treatment with NaHS (H2S donor), IGF-1, and MR-409 (GHRH agonist) showed protective effects after TBI. This study gives novel information on the functions of H2S, IGF-1, and GH in TBI.
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Aims: Association between perceived discrimination and depression has been demonstrated in some sources of discrimination, such as age, sex, and race. However, the effects of perceived discrimination both in any domain and each domain on development of depression are still unclear. We aimed to estimate the association of any and each domain of perceived discrimination with the risk of depression among US older adults. Methods: We did a population-based cohort study using eight waves (from 2006 to 2020) of data from the Health and Retirement Study (HRS), a nationally representative study of US older adults aged 51 years and above. Perceived discrimination was measured by the shortened 5-item version of Williams' discrimination scale, including five domains (less courtesy, service setting, not smart, threatened or harassed, and medical setting). Depressive symptoms were assessed with shortened 8-item version of the Center for Epidemiological Depression scale (8-item CES-D). Cox proportional hazards models were used to estimate the crude and adjusted hazards ratio (HRs) and their 95 % confidence intervals (CIs) between perceived discrimination and risk of depression, after controlling for potential confounders. Results: A total of 18502 participants were included in our final analyses. 42.8 % of them had any perceived discrimination at baseline, and the most prevalent perceived discrimination was feeling less courtesy, which was observed in 5893 people (31.6 %). During a median of 9.8 years follow-up, 44.7 % of participants developed depression. The risk of depression was 46 % (adjusted HR: 1.46, 95 % CI: 1.39-1.52) higher among people with perceived discrimination than those without. The associations between perceived discrimination in each domain and risk of depression were all prominent. Conclusions: Both any and each domain of perceived discrimination were associated with an increased risk of depression. Considering the high prevalence of perceived discrimination and the following poor health outcomes, our findings suggested the integrated measures of providing public education and diversified communication to reduce discrimination, as well as accessible emotional supports to prevent depression are urgently needed.
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BACKGROUND: Tendon stem/progenitor cells (TSPCs) play a vital role in tendon repair, regeneration and homeostasis. However, the specific mechanism of TSPCs aging is still unclear. OBJECTIVE: This study aims to explore the role and molecular mechanism of HPF1 in the aging of TSPCs. METHODS: Young and aged TSPCs (Y-TSPCs and A-TSPCs) were acquired from 3 to 4 and 24-26-month-old Sprague-Dawley male rats, TSPCs (Y-TSPCs and A-TSPCs) were subjected to senescence-associated ß-galactosidase (SA-ß-Gal))staining and telomerase activity detection, p16, p21, Scx, Tnmd, Col1, Col3HPF1 and PAPR1 expression levels were detected by Western blot or Reverse Transcription-quantitative Polymerase Chain Reaction (RT-qPCR), Reciprocal co-immunoprecipitation (co-IP) was used to explore the interaction between HPF1 and PARP1. Ribonucleoprotein immunoprecipitation (RNP-IP) was used to analyze the binding of HuR to the senescence marker gene mRNAs, IP was used to perform HPF1 to the PARylation of HuR, and the half-life of p16 and p21 were detected. Finally, we established an in vivo model, and the tendon tissue was used to perform hematoxylin and eosin (HE) and masson's trichrome staining, as well as the immunohistochemical analysis of Col I and TNMD. RESULTS: Compared with Y-TSPCs, A-TSPCs had significantly enhanced cell senescence and significantly reduced tendon differentiation ability, and significantly increased the expression of HPF1 and PARP1. In addition, HPF1 and PARP1 interacted and coordinated the senescence and differentiation of TSPCs, HPF1 could also regulate the expression of p21 and p21, the interaction of p16 or p21 with HuR, and the poly-ADP ribosylation of PARP1 to HuR. HPF1 overexpression and siHuR co-transfection significantly reduced the half-life of p16 and p21, and HPF1 and PARP1 regulated the mRNA levels of p16 and p21 through HuR. Finally, in vivo experiments have shown that HPF1 or PARP1 overexpression could both inhibit the ability of tendon differentiation and promote cell senescence. CONCLUSIONS: HPF1 promoted the senescence of TSPCs and inhibits the tendon differentiation of TSPCs through PARP1-mediated poly-ADP ribosylation of HuR.
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Senescência Celular , Poli ADP Ribosilação , Ratos , Animais , Masculino , Ratos Sprague-Dawley , Tendões/metabolismo , Células-Tronco/metabolismoRESUMO
BACKGROUND: Sepsis is a type of life-threatening organ dysfunction that is caused by a dysregulated host response to infection. The lung is the most vulnerable target organ under septic conditions. Pulmonary microvascular endothelial cells (PMVECs) play a critical role in acute lung injury (ALI) caused by severe sepsis. The impairment of PMVECs during sepsis is a complex regulatory process involving multiple mechanisms, in which the imbalance of calcium (Ca2+) homeostasis of endothelial cells is a key factor in its functional impairment. Our preliminary results indicated that hydrogen gas (H2) treatment significantly alleviates lung injury in sepsis, protects PMVECs from hyperpermeability, and decreases the expression of plasma membrane stromal interaction molecule 1 (STIM1), but the underlying mechanism by which H2 maintains Ca2+ homeostasis in endothelial cells in septic models remains unclear. Thus, the purpose of the present study was to investigate the molecular mechanism of STIM1 and Ca2+-release-activated- Ca2+ channel protein1 (Orai1) regulation by H2 treatment and explore the effect of H2 treatment on Ca2+ homeostasis in lipopolysaccharide (LPS)-induced PMVECs and LPS-challenged mice. METHODS: We observed the role of H2 on LPS-induced ALI of mice in vivo. The lung wet/dry (W/D) weight ratio, total protein in the bronchoalveolar lavage (BAL) fluid and Evans blue dye (EBD) assay were used to evaluate the pulmonary endothelial barrier damage of LPS-challenged mice. The expression of STIM1 and Orai1 were also detected using epifluorescence microscopy. Moreover, we also investigated the role of H2- rich medium in regulating PMVECs under LPS treatment, which induced injury similar to sepsis in vitro. The expression of STIM1 and Orai1 as well as the Ca2+ concentration in PMVECs were examined. RESULTS: In vivo, we found that H2 alleviated ALI of mice through decreasing lung W/D weight ratio, total protein in the BAL fluid and permeability of lung. In addition, H2 also decreased the expression of STIM1 and Orai1 in pulmonary microvascular endothelium. In vitro, LPS treatment increased the expression levels of STIM1 and Orai1 in PMVECs, while H2 reversed these changes. Furthermore, H2 ameliorated Ca2+ influx under sepsis-mimicking conditions. Treatment with the sarco/endoplasmic reticulum Ca2+ adenosine triphosphatase (SERCA) inhibitor, thapsigargin (TG), resulted in a significant reduction in cell viability as well as a reduction in the expression of junctional proteins, including VE-cadherin and occludin. Treatment with the store-operated Ca2+ entry (SOCE) inhibitor, YM-58483 (BTP2), increased the cell viability and expression of junctional proteins. CONCLUSIONS: The present study suggested that H2 treatment alleviates LPS-induced PMVEC dysfunction by inhibiting SOCE mediated by STIM1 and Orai1 in vitro and in vivo.
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The formation of aromatic thioethers from C-S coupling is of great importance in synthetic chemistry. Traditional solution strategies through transition-metal catalysis generally require bulk solution, heat, and longer reaction time. Herein, a mechano-promoted sulfenylation of aryl iodides with nickel catalysis is described. The active aromatic sulfide agents are in-situ generated from aromatic thiol or disulfide and subsequently adapted in the nickel catalytic cycle, with a tolerance of broad substituted groups under optimized conditions. In addition to the gram-scale synthesis that reveals the application potential of the method, the radical trapping and competitive experiments are also conducted for the mechanistic study, thus providing a plausible mechanism rationally. Furthermore, the proposed methodology is certificated as being versatile and following the green principles with ideal calculated values of green chemistry metrics, and the comparison with other approaches for C-S bond formation is also demonstrated.
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Introduction: Emotional disorders are essential manifestations of many neurological and psychiatric diseases. Nowadays, researchers try to explore bi-directional brain-computer interface techniques to help the patients. However, the related functional brain areas and biological markers are still unclear, and the dynamic connection mechanism is also unknown. Methods: To find effective regions related to different emotion recognition and intervention, our research focuses on finding emotional EEG brain networks using spiking neural network algorithm with binary coding. We collected EEG data while human participants watched emotional videos (fear, sadness, happiness, and neutrality), and analyzed the dynamic connections between the electrodes and the biological rhythms of different emotions. Results: The analysis has shown that the local high-activation brain network of fear and sadness is mainly in the parietal lobe area. The local high-level brain network of happiness is in the prefrontal-temporal lobe-central area. Furthermore, the α frequency band could effectively represent negative emotions, while the α frequency band could be used as a biological marker of happiness. The decoding accuracy of the three emotions reached 86.36%, 95.18%, and 89.09%, respectively, fully reflecting the excellent emotional decoding performance of the spiking neural network with self- backpropagation. Discussion: The introduction of the self-backpropagation mechanism effectively improves the performance of the spiking neural network model. Different emotions exhibit distinct EEG networks and neuro-oscillatory-based biological markers. These emotional brain networks and biological markers may provide important hints for brain-computer interface technique exploration to help related brain disease recovery.
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Target biomarkers for H2 at both the protein and genome levels are still unclear. In this study, quantitative proteomics acquired from a mouse model were first analyzed. At the same time, functional pathway analysis helped identify functional pathways at the protein level. Then, bioinformatics on mRNA sequencing data were conducted between sepsis and normal mouse models. Differential expressional genes with the closest relationship to disease status and development were identified through module correlation analysis. Then, common biomarkers in proteomics and transcriptomics were extracted as target biomarkers. Through analyzing expression quantitative trait locus (eQTL) and genome-wide association studies (GWAS), colocalization analysis on Apoa2 and sepsis phenotype was conducted by summary-data-based Mendelian randomization (SMR). Then, two-sample and drug-target, syndrome Mendelian randomization (MR) analyses were all conducted using the Twosample R package. For protein level, protein quantitative trait loci (pQTLs) of the target biomarker were also included in MR. Animal experiments helped validate these results. As a result, Apoa2 protein or mRNA was identified as a target biomarker for H2 with a protective, causal relationship with sepsis. HDL and type 2 diabetes were proven to possess causal relationships with sepsis. The agitation and inhibition of Apoa2 were indicated to influence sepsis and related syndromes. In conclusion, we first proposed Apoa2 as a target for H2 treatment.
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Apolipoproteína A-II , Diabetes Mellitus Tipo 2 , Lesão Pulmonar , Sepse , Animais , Camundongos , Biomarcadores , Predisposição Genética para Doença , Estudo de Associação Genômica Ampla , Genômica , Hidrogênio/farmacologia , Hidrogênio/uso terapêutico , Polimorfismo de Nucleotídeo Único , Proteômica , Sepse/tratamento farmacológico , Sepse/genética , Apolipoproteína A-II/genética , Apolipoproteína A-II/metabolismoRESUMO
BACKGROUND: Chronic subdural hematoma (CSDH) is a common disease in neurosurgery department. Burr-hole drainage is the main surgical treatment. And the recurrence rate is as high as 25%. CASE REPORT: In this case, a male patient with CSDH in the left frontotemporal parietal region underwent 2 drilling and drainage operations in the local hospital, but the hematoma recurred after operations. Being unable to bearing the repeated and progressive aggravation of headache, he came to our hospital for treatment. After considering the comprehensive situation, we use a new surgical method, removal of hematoma by drilling multiple holes in the lateral skull, to cure the patient. CONCLUSIONS: We get inspirations from the treatment of moyamoya disease surgery, through the bone holes the scalp forms many "meat column" like structures which have powerful capability in absorption, so the scalp could deep into the hematoma, then the CSDH could be cured. Provide a new surgical method for the treatment of refractory CSDH.
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Craniotomia , Hematoma Subdural Crônico , Humanos , Masculino , Craniotomia/efeitos adversos , Craniotomia/métodos , Trepanação/efeitos adversos , Drenagem/métodos , Cefaleia , Crânio/cirurgia , Hematoma Subdural Crônico/cirurgia , Recidiva , Resultado do TratamentoRESUMO
BACKGROUND: The number of COVID-19 infections has increased sharply and quickly after optimizing the COVID-19 response in China. In the context of this population-size infection, college students' psychological response is yet to be understood. METHODS: A cross-sectional study was designed to investigate anxiety, depression, insomnia, and post-traumatic stress disorder (PTSD) symptoms among college students from December 31, 2022, to January 7, 2023. The questionnaire included the Generalized Anxiety Disorder 7 (GAD-7), Patient Health Questionnaire 9 (PHQ-9), Insomnia Severity Index (ISI), Impact of Event Scale (IES-R), and self-designed questionnaire. RESULTS: Of the 22,624 respondents, the self-reported prevalence of anxiety, depression, insomnia, PTSD, and any of the four psychological symptoms appeared as 12.7 %, 25.8 %, 11.6 %, 7.9 %, and 29.7 %, respectively. The self-reported COVID-19 infection rate was 80.2 %. Changes in the place for learning, longer time online, not recovering after infection, a higher proportion of family member infection, insufficient drug reserve, worry about sequela after infection, future studies, or employment contributed to a higher risk of anxiety/depression/insomnia symptoms or PTSD symptoms. Multinomial logistic regression showed that those who spent more extended time on the Internet, recovered after infection, and had insufficient drug reserves were less likely to have PTSD than anxiety/depression/insomnia symptoms. LIMITATIONS: The study was a non-probability sampling survey. CONCLUSIONS: Anxiety, depression, insomnia, and PTSD were common psychological symptoms among college students when infection went through a large-scale population. This study highlights the importance of continuing to care for the psychological symptoms of college students, especially timely responses to their concerns related to the epidemic situation and COVID-19 infection.