Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 122
Filtrar
2.
Front Cardiovasc Med ; 11: 1396311, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39027007

RESUMEN

Background: Chronic heart failure (CHF) patients exhibit alterations in cerebral cortical structure and cognitive function. However, the mechanisms by which CHF affects cortical structure and functional regions remain unknown. This study aims to investigate potential causal relationship between CHF and cerebral cortical structure through Mendelian randomization (MR). Methods: The research utilized genome-wide association studies (GWAS) to explore the causal association between CHF and cerebral cortical structure. The results were primarily analyzed using the inverse-variance weighted (IVW). The reliability of the data was verified through horizontal pleiotropy and heterogeneity analysis by MR-Egger intercept test and Cochran's Q-test, respectively. Replication analysis was conducted in the Integrative Epidemiology Unit (IEU) OpenGWAS project for further validation. In addition, we collected mediator genes that mediate causality to reveal potential mechanisms. Integrated bioinformatics analysis was conducted using the Open Target Genetics platform, the STRING database, and Cytoscape software. Results: The IVW results did not reveal any significant causal association between genetically predicted CHF and the overall structure of the cerebral cortex or the surface area (SA) of the 34 functional regions of the cerebral cortex (P > 0.05). However, the results revealed that CHF increased the thickness (TH) of pars opercularis (IVW: ß = 0.015, 95% CI: 0.005-0.025, P = 3.16E-03). Replication analysis supported the causal association between CHF and pars opercularis TH (IVW: ß = 0.02, 95% CI: 0.010-0.033, P = 1.84E-04). We examined the degree centrality values of the top 10 mediator genes, namely CDKN1A, CELSR2, NME5, SURF4, PSMA5, TSC1, RPL7A, SURF6, PRDX3, and FTO. Conclusion: Genetic evidence indicates a positive correlation between CHF and pars opercularis TH.

3.
Adv Healthc Mater ; : e2400591, 2024 Jun 11.
Artículo en Inglés | MEDLINE | ID: mdl-38861753

RESUMEN

Calcium overload can lead to tumor cell death. However, because of the powerful calcium channel excretory system within tumor cells, simplistic calcium overloads do not allow for an effective antitumor therapy. Hence, the nanoparticles are created with polyethylene glycol (PEG) donor-modified calcium phosphate (CaP)-coated, manganese-doped hollow mesopores Prussian blue (MMPB) encapsulating glucose oxidase (GOx), called GOx@MMPB@CaP-PEG (GMCP). GMCP with a three-mode enhancement of intratumor reactive oxygen species (ROS) levels is designed to increase the efficiency of the intracellular calcium overload in tumor cells to enhance its anticancer efficacy. The released exogenous Ca2+ and the production of cytotoxic ROS resulting from the perfect circulation of the three-mode ROS outbreak generation that Fenton/Fenton-like reaction and consumption of glutathione from Fe2+/Fe3+and Mn2+/Mn3+ circle, and amelioration of hypoxia from MMPB-guided and GOx-mediated starvation therapy. Photothermal efficacy-induced heat generation owing to MMPB accelerates the above reactions. Furthermore, abundant ROS contribute to damage to mitochondria, and the calcium channels of efflux Ca2+ are inhibited, resulting in a calcium overload. Calcium overload further increases ROS levels and promotes apoptosis of tumor cells to achieve excellent therapy.

4.
Adv Clin Exp Med ; 2024 Jun 11.
Artículo en Inglés | MEDLINE | ID: mdl-38860713

RESUMEN

BACKGROUND: This meta-analysis aims to assess the outcomes of supported intervention transitional care compared to traditional care for stroke survivors. MATERIAL AND METHODS: A systematic literature review was accomplished and 4,437 stroke patients were recruited for the current study; 2,211 of them were treated with transitional care and 2,226 with traditional care. The inclusion criteria of the current study recruited only randomized clinical trials up until November 2023. A random analysis model was used to analyze the continuous and dichotomous models. RESULTS: Supported intervention transitional care (early supported discharge) for stroke survivors showed a significant (p = 0.002) impact regarding the functional status of patients as expressed by the Barthel index (mean difference (MD) = 0.57, 95% confidence interval (95% CI): 0.20-0.94, I² = 93.72%). On the other hand, there were no considerable (p > 0.05) differences regarding other outcomes such as activities of daily living, the Caregiver Strain Index (CSI), the modified Rankin scale (mRS), and mortality (MD = 0.29, 95% CI: -0.12-0.69, I² = 94.5%; MD = -0.13, 95% CI: -0.40-0.14, I² = 68.65%; MD = -0.13, 95% CI: -0.49-0.23, I² = 83.33%; and MD = -0.19, 95% CI: -0.58-0.17, I² = 0%; respectively). CONCLUSION: Supported transitional care allowed stroke survivors to succeed in enhancing their functional status outcomes compared with controls, while there was no significant impact regarding mortality rate. Further investigations and multicenter studies are required to enhance the evidence.

5.
Int J Nanomedicine ; 19: 5045-5056, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38832334

RESUMEN

Background: Chemodynamic therapy (CDT) is a new treatment approach that is triggered by endogenous stimuli in specific intracellular conditions for generating hydroxyl radicals. However, the efficiency of CDT is severely limited by Fenton reaction agents and harsh reaction conditions. Methods: Bimetallic PtMn nanocubes were rationally designed and simply synthesized through a one-step high-temperature pyrolysis process by controlling both the nucleation process and the subsequent crystal growth stage. The polyethylene glycol was modified to enhance biocompatibility. Results: Benefiting from the alloying of Pt nanocubes with Mn doping, the structure of the electron cloud has changed, resulting in different degrees of the shift in electron binding energy, resulting in the increasing of Fenton reaction activity. The PtMn nanocubes could catalyze endogenous hydrogen peroxide to toxic hydroxyl radicals in mild acid. Meanwhile, the intrinsic glutathione (GSH) depletion activity of PtMn nanocubes consumed GSH with the assistance of Mn3+/Mn2+. Upon 808 nm laser irradiation, mild temperature due to the surface plasmon resonance effect of Pt metal can also enhance the Fenton reaction. Conclusion: PtMn nanocubes can not only destroy the antioxidant system via efficient reactive oxygen species generation and continuous GSH consumption but also propose the photothermal effect of noble metal for enhanced Fenton reaction activity.


Asunto(s)
Glutatión , Manganeso , Platino (Metal) , Especies Reactivas de Oxígeno , Animales , Platino (Metal)/química , Platino (Metal)/farmacología , Especies Reactivas de Oxígeno/metabolismo , Glutatión/química , Humanos , Manganeso/química , Manganeso/farmacología , Terapia Fototérmica/métodos , Ratones , Nanopartículas del Metal/química , Peróxido de Hidrógeno/química , Línea Celular Tumoral , Radical Hidroxilo/química , Antineoplásicos/química , Antineoplásicos/farmacología , Hierro/química
6.
Artículo en Inglés | MEDLINE | ID: mdl-38430140

RESUMEN

Objective: To explore the application value of enhanced recovery after surgery (ERAS) in the treatment of adhesive intestinal obstruction (AIO) by nasogastric tube (NGT). Methods: Between December 2020 and December 2022, AIO patients who received NGT treatment at The Fourth Hospital of Changsha were selected, including 43 cases receiving ERAS nursing (observation group) and 35 cases receiving routine care (control group). The two groups were compared in terms of postoperative rehabilitation, as well as their psychology, pain, and quality of life which were evaluated using Self-Rating Anxiety/Depression Scale (SAS/SDS), Visual Analogue Scale (VAS), and Short-Form 36 Item Health Survey (SF-36), respectively. During treatment, the adverse reactions were recorded. Results: In the observation group, the abdominal pain and distension relief time, time to first post-treatment flatus and defecation, abdominal circumference reduction 48 hours after admission, bowel sound recovery, first oral food intake, and extubation time were shorter than those of the control group (P < .05), and the SAS and SDS scores were also lower than those of the control group after treatment (P < .05). At 6-24 hours after treatment, the VAS of the observation group was lower than that of the control group, while the SF-36 score was higher (P < .05). Finally, a lower adverse reaction rate was determined in the observation group compared to the control group (P < .05). Conclusions: ERAS care promotes the recovery of AIO patients after NGT treatment, improves their pain and negative emotions, improves their quality of life, and is extremely valuable for clinical application.

7.
Oncol Lett ; 27(4): 183, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38476210

RESUMEN

Spontaneous rupture and hemorrhage of mediastinal germ cell tumors is a rare occurrence. In the current report, the case of a 20-year-old male patient who was admitted with chest tightness and dyspnea is presented. An urgent chest CT scan revealed a large tumor in the right anterior mediastinum, measuring ~12 cm in diameter, with associated intratumoral hemorrhage. An emergency thoracotomy was performed to excise the lesion, which revealed that the bleeding was caused by a ruptured tumor. Postoperative pathological findings revealed a mediastinal mixed germ cell tumor consisting of four pathological types: Embryonal carcinoma, seminoma, yolk sac tumor and immature teratoma. Postoperatively, the patient showed marked improvement in the symptoms of dyspnea. However, the follow-up outcome was poor, and the patient succumbed 2 months after surgery. To the best of our knowledge, there are no reports of rupture and hemorrhage involving >4 mixed germ cell tumors. In the present report, the experience of the treatment of the patient is summarized, and literature was reviewed to improve clinicians' awareness of the disease.

8.
J Gastroenterol Hepatol ; 39(4): 658-666, 2024 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-38251791

RESUMEN

BACKGROUND AND AIM: Fexuprazan is a novel potassium-competitive acid blocker (P-CAB). This study aimed to explore the noninferior efficacy and safety of fexuprazan to esomeprazole in treating erosive esophagitis (EE). METHODS: This was a phase III, randomized, double-blind multicenter study. Patients with endoscopically confirmed EE were randomized to receive fexuprazan 40 mg or esomeprazole 40 mg once a daily for 4-8 weeks. The healing rates of EE, symptom response, GERD-health-related quality life (GERD-HRQL), and treatment-emergent adverse events (TEAEs) were compared between fexuprazan group and esomeprazole group. RESULTS: A total of 332 subjects were included in full analysis set (FAS) and 311 in per-protocol set (PPS). The healing rates of fexuprazan and esomeprazole groups at 8 weeks were 88.5% (146/165) and 89.0% (145/163), respectively, in FAS and 97.3% (145/149) and 97.9% (143/146), respectively, in PPS. Noninferiority of fexuprazan compared with esomeprazole according to EE healing rates at 8 weeks was demonstrated in both FAS and PPS analysis. No significant difference was found between groups in EE healing rates at 4 weeks, symptom responses, and changes of GERD-HRQL. The incidence of drug-related AEs was 19.4% (32/165) in fexuprazan arm and 19.6% (32/163) in esomeprazole arm. CONCLUSION: This study demonstrated noninferior efficacy of fexuprazan to esomeprazole in treating EE. The incidence of TEAEs was similar between fexuprazan and esomeprazole. Trial registration number NCT05813561.


Asunto(s)
Aminas , Esofagitis Péptica , Reflujo Gastroesofágico , Úlcera Péptica , Pirroles , Humanos , Método Doble Ciego , Esomeprazol/efectos adversos , Esofagitis Péptica/tratamiento farmacológico , Esofagitis Péptica/etiología , Reflujo Gastroesofágico/tratamiento farmacológico , Reflujo Gastroesofágico/complicaciones , Úlcera Péptica/complicaciones , Inhibidores de la Bomba de Protones/efectos adversos , Resultado del Tratamiento
9.
Virus Res ; 341: 199317, 2024 03.
Artículo en Inglés | MEDLINE | ID: mdl-38242020

RESUMEN

To find the predictors of early HCC based on the dynamic changes of HBV quasispecies, this study utilizing the second-generation sequencing (NGS) and high-order multiplex droplet digital PCR (ddPCR) technology to examine the HBV quasispecies in serum of total 247 subjects recruited from high-incidence area of HCC. In the discovery stage, 15 non-synonymous Single Nucleotide Polymorphisms (SNPs) with higher variant proportion in HCC case group were founded (all P<0.05). Furthermore, the variant proportions in some of these SNPs were observed changing regularly within 5 years before the onset of HCC, and 5 of them located in HBX, 2 in HBS and 2 in HBC. The HBV predominant quasispecies and their consensus sequences were identified by genetic evolution analysis, in which the high HBS and HBC quasispecies heterogeneity were found associated with the forming of multifarious quasispecies clones, and the HBX gene had the highest proportion of predominant quasispecies (46.7 % in HBX vs 12.7 % and 13.8 % in HBS and HBC respectively) with the key variations (G1512A, A1630G, T1753C/G/A, A1762T and G1764A) determined. In the validation stage, we confirmed that the combined double mutations of G1512A+A1630G, A1762T+G1764A, and the combined triple mutations of T1753C/G/A + A1762T+G1764A, all expressed higher in early HCC cases when comparing with control group (all P<0.05). We also demonstrated the advantages of ddPCR using in multi-variations detection in large-sample for early HCC surveillance and screening. So we think that the dynamic of key HBV variation positions and their different combinations determined by quasispecies anlysis in this study can act as the novel predictors of early hepatocarcinoma and suitable to popularize and apply in HCC screening.


Asunto(s)
Carcinoma Hepatocelular , Hepatitis B Crónica , Neoplasias Hepáticas , Humanos , Carcinoma Hepatocelular/epidemiología , Carcinoma Hepatocelular/complicaciones , Virus de la Hepatitis B/genética , Neoplasias Hepáticas/epidemiología , Neoplasias Hepáticas/complicaciones , Cuasiespecies , Hepatitis B Crónica/patología , Mutación , Genotipo
10.
Adv Mater ; 36(8): e2305632, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37805826

RESUMEN

Optically controlled neuromodulation is a promising approach for basic research of neural circuits and the clinical treatment of neurological diseases. However, developing a non-invasive and well-controllable system to deliver accurate and effective neural stimulation is challenging. Micro/nanorobots have shown great potential in various biomedical applications because of their precise controllability. Here, a magnetically-manipulated optoelectronic hybrid microrobot (MOHR) is presented for optically targeted non-genetic neuromodulation. By integrating the magnetic component into the metal-insulator-semiconductor junction design, the MOHR has excellent magnetic controllability and optoelectronic properties. The MOHR displays a variety of magnetic manipulation modes that enables precise and efficient navigation in different biofluids. Furthermore, the MOHR could achieve precision neuromodulation at the single-cell level because of its accurate targeting ability. This neuromodulation is achieved by the MOHR's photoelectric response to visible light irradiation, which enhances the excitability of the targeted cells. Finally, it is shown that the well-controllable MOHRs effectively restore neuronal activity in neurons damaged by ß-amyloid, a pathogenic agent of Alzheimer's disease. By coupling precise controllability with efficient optoelectronic properties, the hybrid microrobot system is a promising strategy for targeted on-demand optical neuromodulation.


Asunto(s)
Luz , Magnetismo
11.
Front Pharmacol ; 14: 1324764, 2023.
Artículo en Inglés | MEDLINE | ID: mdl-38143503

RESUMEN

The clinical application of reactive oxygen species (ROS)-mediated tumor treatment has been critically limited by inefficient ROS generation. Herein, we rationally synthesized and constructed the three-dimensional PdMo nanoflowers through a one-pot solvothermal reduction method for elaborately regulated peroxidase-like enzymatic activity and glutathione peroxidase-like enzymatic activity, to promote oxidation ROS evolvement and antioxidation glutathione depletion for achieving intensive ROS-mediated tumor therapy. The three-dimensional superstructure composed of two-dimensional nanosheet subunits can solve the issues by avoiding the appearance of tightly stacked crystalline nanostructures. Significantly, Mo is chosen as a second metal to alloy with Pd because of its more chemical valence and negative ionization energy than Pd for improved electron transfer efficiencies and enhanced enzyme-like activities. In addition, the photothermal effect generated by PdMo nanoflowers could also enhance its enzymatic activities. Thus, this work provides a promising paradigm for achieving highly ROS-mediated tumor therapeutic efficacy by regulating the multi-enzymatic activities of Pd-based nanoalloys.

12.
Exp Neurol ; 369: 114532, 2023 11.
Artículo en Inglés | MEDLINE | ID: mdl-37689231

RESUMEN

Cerebral ischemia is a serious disease characterized by brain tissue ischemia and hypoxic necrosis caused by the blockage of blood vessels within the central nervous system. Although stem cell therapy is a promising approach for treating ischemic stroke, the inflammatory, oxidative, and hypoxic environment generated by cerebral ischemia greatly reduces the survival and therapeutic effects of transplanted stem cells. Endothelial colony-forming cells (ECFCs) are a class of precursor cells with strong proliferative potential that can migrate and differentiate directly into mature vascular endothelial cells. Consequently, ECFCs can exert significant therapeutic and reparative effects in diseases associated with vascular injury. Monocyte chemoattractant protein-induced protein 1 (MCPIP-1) exerts multiple biological effects; however, no studies have yet reported its role in the angiogenic function of ECFCs. In this study, we performed Proteome Profiler™ Human Angiogenesis Antibody arrays and tandem mass tag protein profiling to investigate the effect of MCPIP-1 on ECFCs. We demonstrated that MCPIP-1 knockdown enhanced the proliferation, migration, and in vivo and in vitro angiogenic capacity of ECFCs by upregulating the transferrin receptor-activated AKT/m-TOR signaling pathway to promote cellular trophic factor secretion. Furthermore, we found that the lateral ventricular transplantation of ECFCs with lentiviral MCPIP-1 knockdown into mice with middle cerebral artery occlusion increased serum vacular endothelial growth factor(VEGF), angiopoietin-1, and HIF-1a levels, enhanced neovascularization and neurogenesis in the ischemic penumbra, reduced the size of cerebral infarcts, and promoted neurological recovery. Together, these findings suggest new avenues for enhancing the therapeutic efficacy of ECFCs.


Asunto(s)
Isquemia Encefálica , Células Endoteliales , Neovascularización Fisiológica , Animales , Humanos , Ratones , Isquemia Encefálica/metabolismo , Células Cultivadas , Células Endoteliales/metabolismo , Isquemia/metabolismo , Isquemia/terapia , Neovascularización Fisiológica/genética , Proteínas Proto-Oncogénicas c-akt/metabolismo , Transducción de Señal , Serina-Treonina Quinasas TOR/metabolismo
13.
Clin Transl Gastroenterol ; 14(7): e00602, 2023 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-37235793

RESUMEN

INTRODUCTION: Keverprazan is a novel potassium-competitive acid blocker for the treatment of acid-related disorders requiring potent acid inhibition. This study aimed to establish the noninferiority of keverprazan to lansoprazole in the treatment of patients with duodenal ulcer (DU). METHODS: In this phase III, double-blind, multicenter study, 360 Chinese patients with endoscopically confirmed active DU were randomized 1:1 to take either keverprazan (20 mg) or lansoprazole (30 mg) treatment for up to 6 weeks. The primary end point was DU healing rate at week 6. The secondary end point was DU healing rate at week 4. Symptom improvement and safety were also assessed. RESULTS: Based on the full analysis set, the cumulative healing rates at week 6 were 94.4% (170/180) and 93.3% (166/178) for keverprazan and lansoprazole, respectively (difference: 1.2%; 95% confidence intervel: -4.0%-6.5%). At week 4, the respective healing rates were 83.9% (151/180) and 80.3% (143/178). In the per protocol set, the 6-week healing rates in keverprazan and lansoprazole groups were 98.2% (163/166) and 97.6% (163/167), respectively (difference: 0.6%; 95% confidence intervel: -3.1%-4.4%); the 4-week healing rates were respectively 86.8% (144/166) and 85.6% (143/167). Keverprazan was noninferior to lansoprazole in DU healing after the treatment for 4 and 6 weeks. The incidence of treatment-emergent adverse events was comparable among groups. DISCUSSION: Keverprazan 20 mg had a good safety profile and was noninferior to lansoprazole 30 mg once daily for DU healing.


Asunto(s)
Antiulcerosos , Úlcera Duodenal , Humanos , Lansoprazol/efectos adversos , Úlcera Duodenal/tratamiento farmacológico , Úlcera Duodenal/inducido químicamente , Antiulcerosos/efectos adversos , Método Doble Ciego
14.
J Ethnopharmacol ; 308: 116268, 2023 May 23.
Artículo en Inglés | MEDLINE | ID: mdl-36842723

RESUMEN

ETHNOPHARMACOLOGICAL RELEVANCE: Hydroxysafflor yellow A (HSYA) is the principal bioactive compound isolated from the plant Carthamus tinctorius L. and has been reported to exert neuroprotective effects against various neurological diseases, including traumatic brain injury (TBI). However, the specific molecular and cellular mechanisms underlying HSYA-mediated neuroprotection against TBI are unclear. AIM OF THE STUDY: This study explored the effects of HSYA on autophagy and the NLRP3 inflammasome in mice with TBI and the related mechanisms. MATERIALS AND METHODS: Mice were subjected to TBI and treated with or without HSYA. Neurological severity scoring, LDH assays and apoptosis detection were first performed to assess the effects of HSYA in mice with TBI. RNA-seq was then conducted to explore the mechanisms that contributed to HSYA-mediated neuroprotection. ELISA, western blotting, and immunofluorescence were performed to further investigate the mechanisms of neuroinflammation and autophagy. Moreover, 3-methyladenine (3-MA), an autophagy inhibitor, was applied to determine the connection between autophagy and the NLRP3 inflammasome. RESULTS: HSYA significantly decreased the neurological severity score, serum LDH levels and apoptosis in mice with TBI. A total of 921 differentially expressed genes were identified in the cortices of HSYA-treated mice with TBI and were significantly enriched in the inflammatory response and autophagy. Furthermore, HSYA treatment markedly reduced inflammatory cytokine levels and astrocyte activation. Importantly, HSYA suppressed neuronal NLRP3 inflammasome activation, as indicated by decreased levels of NLRP3, ASC and cleaved caspase-1 and a reduced NLRP3+ neuron number. It increased autophagy and ameliorated autophagic flux dysfunction, as evidenced by increased LC3 II/LC3 I levels and decreased P62 levels. The effects of HSYA on the NLRP3 inflammasome were abolished by 3-MA. Mechanistically, HSYA may enhance autophagy through AMPK/mTOR signalling. CONCLUSION: HSYA enhanced neuronal autophagy by triggering the AMPK/mTOR signalling pathway, leading to inhibition of the NLRP3 inflammasome to improve neurological recovery after TBI.


Asunto(s)
Lesiones Traumáticas del Encéfalo , Inflamasomas , Ratones , Animales , Inflamasomas/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Neuroprotección , Proteínas Quinasas Activadas por AMP , Lesiones Traumáticas del Encéfalo/metabolismo , Autofagia , Serina-Treonina Quinasas TOR
15.
Cell Mol Neurobiol ; 43(3): 1129-1146, 2023 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-35635601

RESUMEN

Autism spectrum disorder (ASD) is a neurodevelopmental disorder that lasts lifelong and causes noticeably higher premature mortality. Although the core symptoms and other behavioral deficits of ASD can persist or be deteriorated from early development to old age, how aging affects the behaviors and brain anatomy in ASD is largely unknown. DOCK4 is an ASD risk gene highly expressed in the hippocampus, and Dock4 knockout (KO) mice display ASD-like behaviors in adulthood (4- to 6-month-old). In this study, we evaluated the behavioral and hippocampal pathological changes of late-middle-aged (15- to 17-month-old) Dock4 male KO mice. Aged Dock4 KO mice continuously showed similar social deficit, elevated anxiety, and disrupted object location memory as observed in the adulthood, when compared to their wild-type (WT) littermates. Notably, Dock4 KO mice displayed an age-related decline of hippocampal dependent spatial memory, showing decreased spatial memory in Barnes maze than their WT littermates at late middle age. Morphological analysis from WT and Dock4 KO littermates revealed that Dock4 deficiency led to decreased mature neurons and oligodendrocytes but increased astrocytes in the hippocampus of late-middle-aged mice. Together, we report that ASD-like behaviors mostly persist into late-middle age in Dock4 KO mice, with specific alterations of spatial memory and hippocampal anatomy by age, thus providing new evidence for understanding age differences in behavioral deficits of ASD.


Asunto(s)
Hipocampo , Trastornos de la Memoria , Masculino , Animales , Ratones , Ratones Endogámicos C57BL , Ratones Noqueados , Envejecimiento , Trastornos de la Memoria/genética , Trastornos de la Memoria/metabolismo , Trastornos de la Memoria/patología , Hipocampo/metabolismo , Hipocampo/patología , Conducta Animal , Aprendizaje por Laberinto , Trastorno de la Conducta Social/genética , Trastorno de la Conducta Social/metabolismo , Ansiedad/genética , Ansiedad/metabolismo , Trastornos Neurológicos de la Marcha/genética , Trastornos Neurológicos de la Marcha/metabolismo , Factor de Necrosis Tumoral alfa/metabolismo , Trastorno Autístico/genética , Trastorno Autístico/metabolismo
16.
Transl Cancer Res ; 11(7): 1898-1908, 2022 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-35966285

RESUMEN

Background: To investigate the predictive value of intramuscular adipose tissue content (IMAC) on the outcome of gallbladder cancer (GBC) patients after resection, by then develop and evaluate a nomogram to predict the prognosis of GBC patients. Methods: This research incorporated 123 patients with a pathological diagnosis of GBC. Evaluating the prognosis by the Kaplan-Meier method. Independent predictors of overall survival (OS) were screened using multifactorial Cox regression analysis, and a nomogram was constructed from these. Consistency index and calibration curve were used to identify and calibrate the nomogram. The accuracy of the nomogram was assessed by receiver operating characteristic (ROC) curve and decision curve analysis (DCA) was used to assess the net benefit. Results: Patients with high IMAC showed a worse prognosis. A nomogram was constructed to predict OS based on IMAC. The C-index for the nomogram was 0.804. The calibration curve showed well performance of the nomogram. The area under the ROC curve (AUC) for the nomogram at three and five years was 0.839 and 0.785, respectively. A high net benefit was demonstrated by DCA. Conclusions: IMAC was a valid predictor for GBC patients. A nomogram with good performance is constructed to predict the prognosis of GBC patients.

17.
Eur J Pharmacol ; 931: 175175, 2022 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-35921957

RESUMEN

Ferroptosis has been shown to be involved in the pathological process of many diseases. However, the function and mechanism of ferroptosis in reflux esophagitis (RE), especially in the esophageal mucosal damage, remains unknown. The purpose of this study was to screen potential therapeutic target genes that mediate RE esophageal mucosal damage and regulate ferroptosis. RE rats were established by our previous protocol and proteomic analysis of esophageal mucosa was performed. In addition, the ferroptosis-related genes were retrieved from the FerrDb database and were cross analyzed with the differential proteins of proteomics to obtain potential therapeutic target genes Acyl-CoA synthetase long-chain family 4 (ACSL4), a key enzyme for ferroptosis. In the present study, we used the ACSL4 inhibitor rosiglitazone (ROSI) and the ferroptosis inhibitor ferrostatin-1 to intervene with RE rats, and evaluate the levels of protein, histological changes, lipid peroxidation levels, iron accumulation and morphological changes in esophageal tissue by HE staining, Western blot, related kit tests, and transmission electron microscope. The results showed that both ferrostatin-1 and ROSI treatment significantly reduced the levels of iron accumulation and lipid peroxidation, and protected against ferroptosis and esophageal tissue injury in RE rats. Through Immunohistochemical staining, 16SrDNA sequencing, Enzyme linked immunosorbent assay (ELISA), Western blot and other tests on the esophagus, gut, spleen and serum of RE rats, we further found that the changes of esophageal and intestinal microbiota and the increase of peripheral blood LPS were the key factors regulating ferroptosis in esophageal epithelial tissue. On the one hand, LPS could increase the expression of ACSL4 in esophageal tissue by up-regulating special protein 1 (Sp1). On the other hand, LPS could increase the secretion of serum ferritin in spleen and the accumulation of iron in esophageal tissue by activating Capase11/GSDMD pyroptosis pathway. Collectively, this study suggests that ACSL4 and ferroptosis are potential therapeutic targets for RE esophageal mucosal damage, and esophageal and gut microecology play a critical role in this process.


Asunto(s)
Esofagitis Péptica , Ferroptosis , Animales , Mucosa Esofágica/patología , Esofagitis Péptica/tratamiento farmacológico , Esofagitis Péptica/patología , Hierro , Lipopolisacáridos , Proteómica , Ratas , Rosiglitazona/uso terapéutico
18.
Cell Commun Signal ; 20(1): 125, 2022 08 18.
Artículo en Inglés | MEDLINE | ID: mdl-35982465

RESUMEN

BACKGROUND: Pyroptosis, especially microglial pyroptosis, may play an important role in central nervous system pathologies, including traumatic brain injury (TBI). Transplantation of mesenchymal stem cells (MSCs), such as human umbilical cord MSCs (hUMSCs), has been a focus of brain injury treatment. Recently, MSCs have been found to play a role in many diseases by regulating the pyroptosis pathway. However, the effect of MSC transplantation on pyroptosis following TBI remains unknown. Tumor necrosis factor α stimulated gene 6/protein (TSG-6), a potent anti-inflammatory factor expressed in many cell types including MSCs, plays an anti-inflammatory role in many diseases; however, the effect of TSG-6 secreted by MSCs on pyroptosis remains unclear. METHODS: Mice were subjected to controlled cortical impact injury in vivo. To assess the time course of pyroptosis after TBI, brains of TBI mice were collected at different time points. To study the effect of TSG-6 secreted by hUMSCs in regulating pyroptosis, normal hUMSCs, sh-TSG-6 hUMSCs, or different concentrations of rmTSG-6 were injected intracerebroventricularly into mice 4 h after TBI. Neurological deficits, double immunofluorescence staining, presence of inflammatory factors, cell apoptosis, and pyroptosis were assessed. In vitro, we investigated the anti-pyroptosis effects of hUMSCs and TSG-6 in a lipopolysaccharide/ATP-induced BV2 microglial pyroptosis model. RESULTS: In TBI mice, the co-localization of Iba-1 (marking microglia/macrophages) with NLRP3/Caspase-1 p20/GSDMD was distinctly observed at 48 h. In vivo, hUMSC transplantation or treatment with rmTSG-6 in TBI mice significantly improved neurological deficits, reduced inflammatory cytokine expression, and inhibited both NLRP3/Caspase-1 p20/GSDMD expression and microglial pyroptosis in the cerebral cortices of TBI mice. However, the therapeutic effect of hUMSCs on TBI mice was reduced by the inhibition of TSG-6 expression in hUMSCs. In vitro, lipopolysaccharide/ATP-induced BV2 microglial pyroptosis was inhibited by co-culture with hUMSCs or with rmTSG-6. However, the inhibitory effect of hUMSCs on BV2 microglial pyroptosis was significantly reduced by TSG-6-shRNA transfection. CONCLUSION: In TBI mice, microglial pyroptosis was observed. Both in vivo and in vitro, hUMSCs inhibited pyroptosis, particularly microglial pyroptosis, by regulating the NLRP3/Caspase-1/GSDMD signaling pathway via TSG-6. Video Abstract.


Asunto(s)
Lesiones Traumáticas del Encéfalo , Moléculas de Adhesión Celular/metabolismo , Células Madre Mesenquimatosas , Adenosina Trifosfato/metabolismo , Animales , Lesiones Traumáticas del Encéfalo/patología , Lesiones Traumáticas del Encéfalo/terapia , Caspasa 1/metabolismo , Humanos , Lipopolisacáridos/farmacología , Células Madre Mesenquimatosas/metabolismo , Ratones , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo
19.
Cancer Biol Ther ; 23(1): 424-438, 2022 12 31.
Artículo en Inglés | MEDLINE | ID: mdl-35816613

RESUMEN

Mounting evidence has demonstrated that fatty acid binding protein 5 (FABP5) is commonly upregulated in many human malignancies. However, the mechanisms explaining the involvement of FABP5 in hepatocellular carcinoma (HCC) remain unclear. In this study, we demonstrated the involvement of FABP5 and its downstream signaling molecules in HCC progression. We first confirmed that FABP5 expression was upregulated in HCC. Additionally, FABP5 promoted HCC cells proliferation, migration, and invasion. Mechanistic investigation showed that FABP5 could improve cAMP-response element binding protein (CREB) phosphorylation. Meanwhile, CREB, as a transcription factor, upregulated the miR-889-5p expression by binding to the miR-889-5p promoter region. Consequently, miR-889-5p led to downregulation of Krüppel-like factor 9 (KLF9) by binding to the 3'-UTR of the KLF9 mRNA, potentiating the PI3K/AKT signaling pathway and promoting the proliferation, migration, and invasion of HCC cells. Our findings have identified a FABP5/CREB/miR-889-5p/KLF9 axis for HCC progression, and we postulate that blocking this key signaling pathway may represent a promising strategy for HCC treatment.


Asunto(s)
Carcinoma Hepatocelular , Neoplasias Hepáticas , MicroARNs , Regiones no Traducidas 3' , Carcinoma Hepatocelular/patología , Línea Celular Tumoral , Movimiento Celular/genética , Proliferación Celular/genética , Proteína de Unión a Elemento de Respuesta al AMP Cíclico/genética , Proteína de Unión a Elemento de Respuesta al AMP Cíclico/metabolismo , Proteínas de Unión a Ácidos Grasos/genética , Proteínas de Unión a Ácidos Grasos/metabolismo , Regulación Neoplásica de la Expresión Génica , Humanos , Factores de Transcripción de Tipo Kruppel/genética , Factores de Transcripción de Tipo Kruppel/metabolismo , Neoplasias Hepáticas/patología , MicroARNs/genética , MicroARNs/metabolismo , Fosfatidilinositol 3-Quinasas/metabolismo , Elementos de Respuesta
20.
Int J Mol Sci ; 23(10)2022 May 10.
Artículo en Inglés | MEDLINE | ID: mdl-35628153

RESUMEN

Alteration of liver tissue mechanical microenvironment is proven to be a key factor for causing hepatocyte injury and even triggering the occurrence of hepatocellular carcinoma; however, the underlying mechanisms involved are not fully understood. In this study, using a customized, pressure-loading device, we assess the effect of pressure loading on DNA damage in human hepatocytes. We show that pressure loading leads to DNA damage and S-phase arresting in the cell cycle, and activates the DNA damage response in hepatocytes. Meanwhile, pressure loading upregulates Dicer expression, and its silencing exacerbates pressure-induced DNA damage. Moreover, pressure loading also activates ERK1/2 signaling molecules. Blockage of ERK1/2 signaling inhibits pressure-upregulated Dicer expression and exacerbates DNA damage by suppressing DNA damage response in hepatocytes. Our findings demonstrate that compressive stress loading induces hepatocyte DNA damage through the ERK1/2-Dicer signaling pathway, which provides evidence for a better understanding of the link between the altered mechanical environment and liver diseases.


Asunto(s)
Hepatocitos , Sistema de Señalización de MAP Quinasas , Daño del ADN , Hepatocitos/metabolismo , Humanos , Hígado/metabolismo , Sistema de Señalización de MAP Quinasas/fisiología , Transducción de Señal
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...