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1.
Bone Res ; 12(1): 53, 2024 Sep 06.
Artículo en Inglés | MEDLINE | ID: mdl-39242551

RESUMEN

Intervertebral disc degeneration (IDD) is a major cause of discogenic pain, and is attributed to the dysfunction of nucleus pulposus, annulus fibrosus, and cartilaginous endplate (CEP). Osteopontin (OPN), a glycoprotein, is highly expressed in the CEP. However, little is known on how OPN regulates CEP homeostasis and degeneration, contributing to the pathogenesis of IDD. Here, we investigate the roles of OPN in CEP degeneration in a mouse IDD model induced by lumbar spine instability and its impact on the degeneration of endplate chondrocytes (EPCs) under pathological conditions. OPN is mainly expressed in the CEP and decreases with degeneration in mice and human patients with severe IDD. Conditional Spp1 knockout in EPCs of adult mice enhances age-related CEP degeneration and accelerates CEP remodeling during IDD. Mechanistically, OPN deficiency increases CCL2 and CCL5 production in EPCs to recruit macrophages and enhances the activation of NLRP3 inflammasome and NF-κB signaling by facilitating assembly of IRAK1-TRAF6 complex, deteriorating CEP degeneration in a spatiotemporal pattern. More importantly, pharmacological inhibition of the NF-κB/NLRP3 axis attenuates CEP degeneration in OPN-deficient IDD mice. Overall, this study highlights the importance of OPN in maintaining CEP and disc homeostasis, and proposes a promising therapeutic strategy for IDD by targeting the NF-κB/NLRP3 axis.


Asunto(s)
Inflamasomas , Degeneración del Disco Intervertebral , Macrófagos , Ratones Noqueados , FN-kappa B , Proteína con Dominio Pirina 3 de la Familia NLR , Osteopontina , Transducción de Señal , Adulto , Anciano , Anciano de 80 o más Años , Animales , Femenino , Humanos , Masculino , Ratones , Persona de Mediana Edad , Adulto Joven , Cartílago/patología , Cartílago/metabolismo , Condrocitos/metabolismo , Condrocitos/patología , Inflamasomas/metabolismo , Degeneración del Disco Intervertebral/patología , Degeneración del Disco Intervertebral/metabolismo , Degeneración del Disco Intervertebral/genética , Macrófagos/metabolismo , Ratones Endogámicos C57BL , FN-kappa B/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/metabolismo , Proteína con Dominio Pirina 3 de la Familia NLR/genética , Proteína con Dominio Pirina 3 de la Familia NLR/deficiencia , Osteopontina/metabolismo , Osteopontina/deficiencia , Osteopontina/genética
2.
Comput Biol Chem ; 112: 108166, 2024 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-39111022

RESUMEN

Identifying diagnostic biomarkers for cancer is crucial in the field of personalized medicine. The available transcriptome and interactome provide unprecedented opportunities and challenges for biomarker screening. From a systematic perspective, network-based medicine methods provide alternative approaches to organizing the available high-throughput omics data for deciphering molecular interactions and their associations with phenotypic states. In this work, we propose a bioinformatics strategy named TopMarker for discovering diagnostic biomarkers by comparing the network topology differences in control and disease samples. Specifically, we build up gene-gene interaction networks in the two states of control and disease respectively. The network rewiring status across the two networks results in differential network topologies reflecting dynamics and changes in normal samples when compared with those in disease. Thus, we identify the potential biomarker genes with differential network topological parameters between the control and disease gene networks. For a proof-of-concept study, we introduce the computational pipeline of biomarker discovery in hepatocellular carcinoma (HCC). We prove the effectiveness of the proposed TopMarker method using these candidate biomarkers in classifying HCC samples and validate its signature capability across numerous independent datasets. We also compare the discriminant power of biomarker genes identified by TopMarker with those identified by other baseline methods. The higher classification performances and functional implications indicate the advantages of our proposed method for discovering biomarkers from differential network topology.


Asunto(s)
Biomarcadores de Tumor , Carcinoma Hepatocelular , Biología Computacional , Neoplasias Hepáticas , Transcriptoma , Carcinoma Hepatocelular/genética , Carcinoma Hepatocelular/diagnóstico , Neoplasias Hepáticas/genética , Neoplasias Hepáticas/diagnóstico , Humanos , Biomarcadores de Tumor/genética , Redes Reguladoras de Genes
3.
Talanta ; 280: 126680, 2024 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-39128317

RESUMEN

Characterization of chemical composition in cigarette smoke is essential for establishing smoke-related exposure estimates. Currently used methods require complex sample preparation with limited capability for obtaining accurate chemical information. We have developed an in situ solid-phase microextraction (SPME) method for online processing of smoke aerosols and directly coupling the SPME probes with confined-space direct analysis in real time (cDART) ion source for high-resolution mass spectrometry (MS) analysis. In a confined space, the substances from SPME probes can be efficiently desorbed and ionized using the DART ion source, and the diffusion and evaporation of volatile species into the open air can be largely avoided. Using SPME-cDART-MS, mainstream smoke (MSS) and side-stream smoke (SSS) can be investigated and the whole analytical protocol can be accomplished in a few min. More than five hundred substances and several classes of compounds were detected and identified. The relative contents of 13 tobacco alkaloids were compared between MSS and SSS. Multivariate data analysis unveiled differences between different types of cigarette smoke and also discovered the characteristic ions. The method is reliable with good reproducibility and repeatability, and has the potential to be quantitative. This study provides a simple and high-efficiency method for smokeomics profiling of complex aerosol samples with in situ online extraction of volatile samples, and direct integration of extracted probes with a modified ambient ionization technique.

4.
Anim Biosci ; 2024 Aug 26.
Artículo en Inglés | MEDLINE | ID: mdl-39210793

RESUMEN

Objective: Oleanolic acid (OA) is a pentacyclic triterpenoid with antioxidant activity that can be an effective scavenger of free radicals in cells. This study was designed to investigate the effects of OA on porcine early embryo developmental competence in vitro and its possible mechanisms of action. Methods: In the present study, parthenogenetically activated porcine embryos were used as models to assess the effect of OA on the in vitro developmental capacity of early porcine embryos in vitro. Zygotic genome activation, mitochondrial function, oxidative stress, cell proliferation and apoptosis in early porcine embryos were examined after supplementing the culture medium with 5 µM OA. Results: The results showed that 5 µM OA supplementation not only significantly increased the blastocyst diameter in early porcine embryos on day 6 but also increased the total number of blastocysts. Furthermore, OA supplementation increased the blastocyst proliferation rate and decreased blastocyst apoptosis. Moreover, OA supplementation significantly increased the proportion of embryos that developed to the 4-cell stage after 48 h of in vitro culture and upregulated the expression of genes associated with zygotic genome activation (DPPA2 and ZSCAN4). Notably, OA alleviated oxidative stress by reducing the intracellular levels of reactive oxygen species and increasing the intracellular levels of reduced glutathione at the 4-cell stage and increased the activities of superoxide dismutase and catalase. Concurrently, OA significantly increased the mitochondrial membrane potential and intracellular ATP content. Conclusion: These results suggest that OA promotes the in vitro developmental competence of parthenogenetically activated porcine embryos by reducing oxidative stress and improving mitochondrial function during in vitro culture and that OA may contribute to the efficiency of in vitro embryo production.

5.
Front Genet ; 15: 1431769, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-39055257

RESUMEN

The existence of a shared genetic basis for mental disorders has long been documented, yet research on whether acquired epigenetic modifications exhibit common alterations across diseases is limited. Previous studies have found that abnormal methylation of cg14631053 at the SSTR4 promoter region mediates the onset of alcohol use disorder. However, whether aberrant methylation of the SSTR4 gene promoter is involved in other mental health disorders remains unclear. In this study, leveraging publicly available data, we identified that changes in methylation of cg14631053 from the SSTR4 promoter region are involved in the development of bipolar disorder and schizophrenia. Furthermore, the direction of methylation changes in the SSTR4 promoter region is disease-specific: hypomethylation is associated with the onset of bipolar disorder and schizophrenia, rather than major depressive disorder. Methylation levels of cg14631053 correlate with chronological age, a correlation that can be disrupted in patients with mental health disorders including schizophrenia and bipolar disorder. In conclusion, SSTR4 promoter methylation may serve as a marker for identifying bipolar disorder and schizophrenia, providing insights into a transdiagnostic mechanism for precision medicine in the future.

6.
Can Urol Assoc J ; 2024 Jun 17.
Artículo en Inglés | MEDLINE | ID: mdl-38976897

RESUMEN

INTRODUCTION: Frailty is a good predictor of adverse outcomes among older patients, especially those who have undergone surgery. The prevalence of frailty among kidney transplant candidates is higher than the general population. This study aimed to explore the predictive value of frailty on post-transplant adverse outcomes among kidney recipients. METHODS: A systematic review was performed for relevant studies until May 20, 2022, using four databases (Embase, Medline, Cochrane, and PsycINFO) for prospective design studies (PROSPERP: CRD42022331022). Random-effect meta-analysis modeling was undertaken in RevMan 5.3 to estimate the predicting value of frailty on adverse outcomes after kidney transplant. RESULTS: This systematic review included 14 studies, eight of which were suitable for meta-analysis. Frailty increased the risk of mortality (pooled hazard ratio [HR] 1.98, 95% confidence interval [CI] 1.48-2.64), surgical complications (risk ratio [RR] 2.14, 95% CI 1.01-4.54), death-censored graft failure (DCGF) (pooled HR 3.31, 95% CI 1.27-8.62), length of stay (LOS) (pooled RR 1.59, 95% CI 1.05-2.39), length of stay ≥2 weeks (pooled odds ratio [OR] 1.72, 95% CI 1.26-2.35). and other common adverse outcomes among kidney transplant recipients. CONCLUSIONS: Frailty is associated with adverse outcomes after kidney transplant. This systematic review suggests the importance of assessing frailty among kidney transplant candidates prior to transplantation. Further research focusing on pretransplant assessment combined with frailty is warranted to improve kidney transplant management.

7.
Artículo en Inglés | MEDLINE | ID: mdl-38994582

RESUMEN

CONTEXT: Supplemental methotrexate (MTX) may affect the clinical course of Graves' disease (GD). OBJECTIVE: Evaluate efficacy of add-on MTX on medical treatment in GD. DESIGN: Prospective, open-label, randomized supplementation controlled trial. SETTING: Academic endocrine outpatient clinic. PATIENTS: One hundred and fifty-three untreated hyperthyroid patients with GD. INTERVENTION: Patients received MTX 10 mg/d with methimazole (MMI) or MMI only. MTX and MMI were discontinued at months 12-18 in euthyroid patients. MAIN OUTCOME MEASURES: Discontinuation rate at months 18 in each group. RESULTS: In the MTX with MMI group, the discontinuation rate was higher than the MMI group at months 15-18 (50.0 vs. 33.3%, P=0.043, 95% CI 1.020 to 3.922; and 55.6 vs 38.9%, P=0.045, 95%CI 1.011 to 3.815, respectively). The decrease in TRAb levels in the MTX with MMI group was significant from baseline to months 6 compared to the MMI alone group [MTX+MMI 67.22% (43.12-80.32), MMI 54.85% (33.18-73.76), P= 0.039) and became more significant from months 9 [MTX+MMI 77.79% (62.27-88.18), MMI 69.55% (50.50-83.22), P= 0.035] to months 18 (P < 0.01 in 15-18 months). A statistically significant difference between the levels of TRAb in the MTX with MMI group and the MMI group at 9-18 months. There were no significant differences in the levels of FT3, FT4 and TSH between two groups. No serious drug-related adverse events were observed in both groups(P=0.771). CONCLUSIONS: Supplemental MTX with MMI resulted in higher discontinuation rate and improvement in decreased TRAb levels to homeostatic levels faster than methimazole treatment alone at months 12-18.

8.
MAbs ; 16(1): 2374607, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38956880

RESUMEN

Precise measurement of the binding activity changes of therapeutic antibodies is important to determine the potential critical quality attributes (CQAs) in developability assessment at the early stage of antibody development. Here, we report a surface plasmon resonance (SPR)-based relative binding activity method, which incorporates both binding affinity and binding response and allows us to determine relative binding activity of antibodies with high accuracy and precision. We applied the SPR-based relative binding activity method in multiple forced degradation studies of antibody developability assessment. The current developability assessment strategy provided comprehensive, precise characterization of antibody binding activity in the stability studies, enabling us to perform correlation analysis and establish the structure-function relationship between relative binding activity and quality attributes. The impact of a given quality attribute on binding activity could be confidently determined without isolating antibody variants. We identified several potential CQAs, including Asp isomerization, Asn deamidation, and fragmentation. Some potential CQAs affected binding affinity of antibody and resulted in a reduction of binding activity. Certain potential CQAs impaired antibody binding to antigen and led to a loss of binding activity. A few potential CQAs could influence both binding affinity and binding response and cause a substantial decrease in antibody binding activity. Specifically, we identified low abundance Asn33 deamidation in the light chain complementarity-determining region as a potential CQA, in which all the stressed antibody samples showed Asn33 deamidation abundances ranging from 4.2% to 27.5% and a mild binding affinity change from 1.76 nM to 2.16 nM.


Asunto(s)
Anticuerpos Monoclonales , Resonancia por Plasmón de Superficie , Resonancia por Plasmón de Superficie/métodos , Humanos , Anticuerpos Monoclonales/química , Anticuerpos Monoclonales/inmunología , Afinidad de Anticuerpos , Unión Proteica , Animales
9.
J Multidiscip Healthc ; 17: 2847-2855, 2024.
Artículo en Inglés | MEDLINE | ID: mdl-38894964

RESUMEN

Objective: This study evaluates a reengineered intervention aimed at improving the clinical management of intravenous indwelling needles in geriatric patients, focusing on cost-efficiency within the Diagnosis-Related Group (DRG) payment framework. Methods: The intervention was assessed through a comparative study involving 387 elderly patients in the Geriatric Department of Xuanwu Hospital, between June 2021 and March 2022. The study contrasted outcomes between patients treated before and after implementing a new team-based management protocol in November 2021. Results: Findings indicate enhanced first-attempt venipuncture success, reduced consumable costs, and decreased complication rates in the post-intervention group (P < 0.001), compared to controls. Conclusion: The intervention demonstrates significant benefits in venipuncture efficiency, cost reduction, and patient safety, suggesting its potential for broader adoption in geriatric care.

10.
Plants (Basel) ; 13(11)2024 May 31.
Artículo en Inglés | MEDLINE | ID: mdl-38891332

RESUMEN

Polygonatum cyrtonema Hua (P. cyrtonema) rhizomes are rich in flavonoids and other secondary metabolites, exhibiting remarkable antioxidant, anti-tumor, and immunomodulatory effects. Polygonatum flavonoid-biosynthesis-related genes have been characterized already. However, a comprehensive overview of Polygonatum flavonoid biosynthesis pathways is still absent. To articulate the accumulation of the flavonoid biosynthesis pathways, we examined transcriptome changes using Illumina HiSeq from five different tissues and the RNA-seq of 15 samples had over 105 Gb of a clean base, generating a total of 277,955 unigenes. The cDNA libraries of the fruits (F), leaves (L), roots (R), stems (S), and rhizomes (T) of three-year-old P. cyrtonema plants generated 57,591, 53,578, 60,321, 51,530, and 54,935 unigenes. Comparative transcriptome analysis revealed that 379 differentially expressed genes (DEGs) were in the group of F _vs_ T, L _vs_ T, R _vs_ T, and S _vs_ T, and the transcripts of flavonoid-biosynthesis-related DEGs were principally enriched in rhizomes. In addition, combined with WGCNA and the FPKM of five tissues' transcription, nine differentially expressed transcription factor families (MYB, WRKY, AP2/ERF, etc.) were characterized in the red module, the red module positively correlated with rhizome flavonoid accumulation. Quantitative real-time PCR (qRT-PCR) further indicated that BZIP1, C3H31, ERF114, and DREB21 are differentially expressed in rhizomes, accompanied in rhizome development in P. cyrtonema. Therefore, this study provides a foundation for further research into uncovering the accumulation of flavonoid biosynthesis in the rhizomes of P. cyrtonema.

11.
Theriogenology ; 226: 120-129, 2024 Sep 15.
Artículo en Inglés | MEDLINE | ID: mdl-38878464

RESUMEN

Since the first mouse induced pluripotent stem cells (iPSCs) was derived, the in vitro culture of domestic iPSCs functionally and molecularly comparable with mouse iPSCs has been a challenge. Here, we established dairy goat iPSCs (giPSCs) from goat ear fibroblast cells with mouse iPSCs morphology, the expression of pluripotent markers and differentiation ability in vitro delivered by piggyBac transposon with nine Dox-inducible exogenous reprogramming factors. These reprogramming factors were bOMSK (bovine OCT4, CMYC, SOX2, and KLF4), pNhL (porcine NANOG and human LIN28), hRL (human RARG and LRH1), and SV40 Large T. Notably, AF-giPSCs (induced in activin A and bFGF condition) were capable of differentiation in embryoid bodies in vitro and could contribute to interspecies chimerism in mouse E6.5 embryos in vitro, demonstrating that AF-giPSCs have the developmental capability to generate some embryonic cell lineages. Moreover, Wnt/ß-catenin signaling has an important role in driving goat induced trophoblast-like stem cells (giTLSCs) from Dox-independent giPSCs. This study will support further establishment of the stable giPSC lines without any integration of exogenous genes.


Asunto(s)
Diferenciación Celular , Cabras , Células Madre Pluripotentes Inducidas , Factor 4 Similar a Kruppel , Animales , Células Madre Pluripotentes Inducidas/citología , Trofoblastos/citología , Trofoblastos/fisiología , Ratones , Técnicas de Cultivo de Célula/veterinaria , Reprogramación Celular/fisiología
12.
BMC Med Inform Decis Mak ; 24(1): 173, 2024 Jun 19.
Artículo en Inglés | MEDLINE | ID: mdl-38898472

RESUMEN

BACKGROUND: Because spontaneous remission is common in IMN, and there are adverse effects of immunosuppressive therapy, it is important to assess the risk of progressive loss of renal function before deciding whether and when to initiate immunosuppressive therapy. Therefore, this study aimed to establish a risk prediction model to predict patient prognosis and treatment response to help clinicians evaluate patient prognosis and decide on the best treatment regimen. METHODS: From September 2019 to December 2020, a total of 232 newly diagnosed IMN patients from three hospitals in Liaoning Province were enrolled. Logistic regression analysis selected the risk factors affecting the prognosis, and a dynamic online nomogram prognostic model was constructed based on extreme gradient boost, random forest, logistic regression machine learning algorithms. Receiver operating characteristic and calibration curves and decision curve analysis were utilized to assess the performance and clinical utility of the developed model. RESULTS: A total of 130 patients were in the training cohort and 102 patients in the validation cohort. Logistic regression analysis identified four risk factors: course ≥ 6 months, UTP, D-dimer and sPLA2R-Ab. The random forest algorithm showed the best performance with the highest AUROC (0.869). The nomogram had excellent discrimination ability, calibration ability and clinical practicability in both the training cohort and the validation cohort. CONCLUSIONS: The dynamic online nomogram model can effectively assess the prognosis and treatment response of IMN patients. This will help clinicians assess the patient's prognosis more accurately, communicate with the patient in advance, and jointly select the most appropriate treatment plan.


Asunto(s)
Glomerulonefritis Membranosa , Nomogramas , Humanos , Femenino , Masculino , Persona de Mediana Edad , Adulto , Pronóstico , Factores de Riesgo , Modelos Logísticos
13.
Adv Sci (Weinh) ; 11(29): e2404423, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38767186

RESUMEN

Establishing an advanced ecosystem incorporating freshwater harvesting, plastic utilization, and clean fuel acquisition is profoundly significant. However, low-efficiency evaporation, single energy utilization, and catalyst leakage severely hinder sustainable development. Herein, a nanofiber-based mortise-and-tenon structural Janus aerogel (MTSJA) is strategically designed in the first attempt and supports Z-scheme catalysts. By harnessing of the upper hydrophilic layer with hydrophilic channels embedding into the hydrophobic bottom layer to achieve tailoring bottom wettability states. MTSJA is capable of a fully-floating function for lower heat loss, water supply, and high-efficiency solar-to-vapor conversion. Benefiting from the ultrasonic cavitation effect and high sensitivity of materials to mechanical forces, this is also the first demonstration of synergistic solar and ultrasound fields to power simultaneous evaporation desalination and waste plastics as reusable substrates generating fuel energy. The system enables persistent desalination with an exceptional evaporation rate of 3.1 kg m-2 h-1 and 82.3% efficiency (21 wt.% NaCl solution and 1 sun), and realizes H2, CO, and CH4 yields with 16.1, 9.5, and 3 µmol h-1 g-1, respectively. This strategy holds great potential for desalination and plastics value-added transformation toward clean energy and carbon neutrality.

14.
Reprod Domest Anim ; 59(5): e14596, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38757656

RESUMEN

Chlorogenic acid (CGA) is an effective phenolic antioxidant that can scavenge hydroxyl radicals and superoxide anions. Herein, the protective effects and mechanisms leading to CGA-induced porcine parthenogenetic activation (PA) in early-stage embryos were investigated. Our results showed that 50 µM CGA treatment during the in vitro culture (IVC) period significantly increased the cleavage and blastocyst formation rates and improved the blastocyst quality of porcine early-stage embryos derived from PAs. Then, genes related to zygotic genome activation (ZGA) were identified and investigated, revealing that CGA can promote ZGA in porcine PA early-stage embryos. Further analysis revealed that CGA treatment during the IVC period decreased the abundance of reactive oxygen species (ROS), increased the abundance of glutathione and enhanced the activity of catalase and superoxide dismutase in porcine PA early-stage embryos. Mitochondrial function analysis revealed that CGA increased mitochondrial membrane potential and ATP levels and upregulated the mitochondrial homeostasis-related gene NRF-1 in porcine PA early-stage embryos. In summary, our results suggest that CGA treatment during the IVC period helps porcine PA early-stage embryos by regulating oxidative stress and improving mitochondrial function.


Asunto(s)
Ácido Clorogénico , Técnicas de Cultivo de Embriones , Desarrollo Embrionario , Mitocondrias , Estrés Oxidativo , Partenogénesis , Especies Reactivas de Oxígeno , Animales , Estrés Oxidativo/efectos de los fármacos , Partenogénesis/efectos de los fármacos , Mitocondrias/efectos de los fármacos , Técnicas de Cultivo de Embriones/veterinaria , Ácido Clorogénico/farmacología , Desarrollo Embrionario/efectos de los fármacos , Especies Reactivas de Oxígeno/metabolismo , Blastocisto/efectos de los fármacos , Porcinos , Potencial de la Membrana Mitocondrial/efectos de los fármacos , Antioxidantes/farmacología , Femenino , Glutatión/metabolismo
15.
Theriogenology ; 224: 119-133, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38762919

RESUMEN

Lysine-specific demethylase 1 (LSD1) stands as the pioneering histone demethylase uncovered, proficient in demethylating H3K4me1/2 and H3K9me1/2, thereby governing transcription and participating in cell apoptosis, proliferation, or differentiation. Nevertheless, the complete understanding of LSD1 during porcine early embryonic development and the underlying molecular mechanism remains unclear. Thus, we investigated the mechanism by which LSD1 plays a regulatory role in porcine early embryos. This study revealed that LSD1 inhibition resulted in parthenogenetic activation (PA) and in vitro fertilization (IVF) embryo arrested the development, and decreased blastocyst quality. Meanwhile, H3K4me1/2 and H3K9me1/2 methylase activity was increased at the 4-cell embryo stage. RNA-seq results revealed that autophagy related biological processes were highly enriched through GO and KEGG pathway analyses when LSD1 inhibition. Further studies showed that LSD1 depletion in porcine early embryos resulted in low mTOR and p-mTOR levels and high autophagy and apoptosis levels. The LSD1 deletion-induced increases in autophagy and apoptosis could be reversed by addition of mTOR activators. We further demonstrated that LSD1 inhibition induced mitochondrial dysfunction and mitophagy. In summary, our research results indicate that LSD1 may regulate autophagy and apoptosis through the mTOR pathway and affect early embryonic development of pigs.


Asunto(s)
Apoptosis , Autofagia , Desarrollo Embrionario , Histona Demetilasas , Transducción de Señal , Serina-Treonina Quinasas TOR , Animales , Histona Demetilasas/metabolismo , Histona Demetilasas/genética , Porcinos/embriología , Serina-Treonina Quinasas TOR/metabolismo , Serina-Treonina Quinasas TOR/genética , Desarrollo Embrionario/fisiología , Autofagia/fisiología , Regulación del Desarrollo de la Expresión Génica , Fertilización In Vitro/veterinaria
16.
Zhongguo Zhong Yao Za Zhi ; 49(9): 2308-2315, 2024 May.
Artículo en Chino | MEDLINE | ID: mdl-38812131

RESUMEN

This study aims to decipher the mechanism of tetramethylpyrazine(TMP) in regulating the migration of neural stem cells(NSCs) in the rat model of middle cerebral artery occlusion(MCAO) via the nuclear factor erythroid 2-related factor 2(Nrf2)/heme oxygenase 1(HO-1)/C-X-C motif chemokine receptor 4(CXCR4) pathway. SD rats were randomized into sham, MCAO(model), and tetramethylpyrazine(TMP, 20 mg·kg~(-1) and 40 mg·kg~(-1)) groups. The neurological impairment was assessed by the modified neurological severity score(mNSS). The immunofluorescence assay was employed to detect the cells stained with both 5-bromodeoxyuridine(BrdU) and doublecortin(DCX) in the brain tissue. The effect of TMP on the migration of C17.2 cells was observed. Western blot was employed to determine the protein levels of Nrf2, HO-1, p62, NAD(P)H quinone oxidoreductase 1(NQO1), stromal cell-derived factor 1(SDF-1), and CXCR4 in the brain tissue and C17.2 cells. The results showed that after 7 days and 21 days of mode-ling, the mNSS and BrdU~+/DCX~+ cells were increased, and the expression of Nrf2 and CXCR4 in the brain tissue was up-regulated. Compared with the model group, TMP(40 mg·kg~(-1)) reduced the mNSS, increased the number of BrdU~+/DCX~+ cells, and up-regulated the expression of Nrf2, CXCR4, and SDF-1. In addition, TMP promoted the migration of C17.2 cells and up-regulated the expression of p62, Nrf2, HO-1, and NQO1 in a time-and dose-dependent manner. The expression was the highest at the time point of 12 h in the TMP(50 µg·mL~(-1)) group(P<0.01). In conclusion, TMP activates the Nrf2/HO-1/CXCR4 pathway to promote the migration of NSCs to the ischemic area, thus exerting the therapeutic effect on the ischemia-reperfusion injury. This study provides experimental support for the application of TMP in ischemic stroke.


Asunto(s)
Movimiento Celular , Hemo-Oxigenasa 1 , Factor 2 Relacionado con NF-E2 , Células-Madre Neurales , Pirazinas , Ratas Sprague-Dawley , Receptores CXCR4 , Animales , Receptores CXCR4/metabolismo , Receptores CXCR4/genética , Factor 2 Relacionado con NF-E2/metabolismo , Factor 2 Relacionado con NF-E2/genética , Pirazinas/farmacología , Ratas , Células-Madre Neurales/efectos de los fármacos , Células-Madre Neurales/metabolismo , Células-Madre Neurales/citología , Movimiento Celular/efectos de los fármacos , Masculino , Hemo-Oxigenasa 1/metabolismo , Hemo-Oxigenasa 1/genética , Proteína Doblecortina , Transducción de Señal/efectos de los fármacos , Daño por Reperfusión/metabolismo , Daño por Reperfusión/tratamiento farmacológico , Humanos
17.
Zhongguo Zhong Yao Za Zhi ; 49(9): 2316-2325, 2024 May.
Artículo en Chino | MEDLINE | ID: mdl-38812132

RESUMEN

This study aimed to investigate the intervention effect of tetramethylpyrazine(TMP) combined with transplantation of neural stem cells(NSCs) on middle cerebral artery occlusion(MCAO) rat model and to explore the mechanism of TMP combined with NSCs transplantation on ischemic stroke based on the regulation of stem cell biological behavior. MCAO rats were randomly divided into a model group, a TMP group, an NSCs transplantation group, and a TMP combined with NSCs transplantation group according to neurological function scores. A sham group was set up at the same time. The neurological function score was used to evaluate the improvement of neurological function in MCAO rats after TMP combined with NSCs transplantation. The proliferation, migration, and differentiation of NSCs were evaluated by BrdU, BrdU/DCX, BrdU/NeuN, and BrdU/GFAP immunofluorescence labeling. The protein expression of stromal cell-derived factor 1(SDF-1), C-X-C motif chemokine receptor 4(CXCR4), as well as oxidative stress pathway proteins nuclear factor erythroid 2-related factor 2(Nrf2), Kelch-like ECH-associated protein 1(KEAP1), heme oxygenase 1(HO-1), NAD(P)H quinone oxidoreductase 1(NQO1) was detected by Western blot to study the migration mechanism of TMP combined with NSCs. The results showed that TMP combined with NSCs transplantation significantly improved the neurological function score in MCAO rats. Immunofluorescence staining showed a significant increase in the number of BrdU~+, BrdU~+/DCX~+, BrdU~+/NeuN~+, and BrdU~+/GFAP~+ cells in the TMP, NSCs transplantation, and combined treatment groups, with the combined treatment group showing the most significant increase. Further Western blot analysis revealed significantly elevated expression of CXCR4 protein in the TMP, NSCs transplantation, and combined treatment groups, along with up-regulated protein expression of Nrf2, HO-1, and NQO1, and decreased KEAP1 protein expression. This study showed that both TMP and NSCs transplantation can promote the recovery of neurological function by promoting the proliferation, migration, and differentiation of NSCs, and the effect of TMP combined with NSCs transplantation is superior. The mechanism of action may be related to the activation of the Nrf2/HO-1/CXCR4 pathway.


Asunto(s)
Isquemia Encefálica , Proteína Doblecortina , Factor 2 Relacionado con NF-E2 , Células-Madre Neurales , Pirazinas , Ratas Sprague-Dawley , Receptores CXCR4 , Animales , Pirazinas/farmacología , Células-Madre Neurales/efectos de los fármacos , Células-Madre Neurales/trasplante , Células-Madre Neurales/metabolismo , Ratas , Masculino , Receptores CXCR4/metabolismo , Receptores CXCR4/genética , Isquemia Encefálica/terapia , Isquemia Encefálica/metabolismo , Isquemia Encefálica/tratamiento farmacológico , Factor 2 Relacionado con NF-E2/metabolismo , Factor 2 Relacionado con NF-E2/genética , Quimiocina CXCL12/metabolismo , Quimiocina CXCL12/genética , Proteína 1 Asociada A ECH Tipo Kelch/metabolismo , Proteína 1 Asociada A ECH Tipo Kelch/genética , Trasplante de Células Madre/métodos , Proliferación Celular/efectos de los fármacos , Movimiento Celular/efectos de los fármacos , Humanos , Daño por Reperfusión/terapia , Daño por Reperfusión/metabolismo , Infarto de la Arteria Cerebral Media/terapia , NAD(P)H Deshidrogenasa (Quinona)/metabolismo , NAD(P)H Deshidrogenasa (Quinona)/genética
18.
Clin Case Rep ; 12(5): e8716, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38698874

RESUMEN

We present a rare case of a female pelvic solitary fibrous tumor unsuccessfully resected using single-port laparoscopy, requiring conversion to laparotomy. Although the resection was successful, the surgical approach could have been improved. For large tumors, minimally invasive results are possible with flexible choices of equipment and incision position.

19.
Reprod Sci ; 31(8): 2493-2507, 2024 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-38653858

RESUMEN

Polycystic ovary syndrome (PCOS) is a complex endocrine disorder syndrome with an incidence of 6% to 10% in women of reproductive age. Women with PCOS not only exhibit abnormal follicular development and fertility disorders, but also have a greater tendency to develop anxiety and depression. Our aim was to evaluate the ability of inflammatory factors in follicular fluid to predict embryonic developmental potential and pregnancy outcome and to construct a machine learning model that can predict IVF pregnancy outcomes based on indicators such as basic sex hormones, embryonic morphology, the follicular microenvironment, and negative emotion. In this study, inflammatory factors (CRP, IL-6, and TNF-α) in follicular fluid samples obtained from 225 PCOS and 225 non-PCOS women were detected via ELISA. For patients with PCOS, the levels of CRP and IL-6 in the follicular fluid in the pregnant group were significantly lower than those in the nonpregnant group. For non-patients with PCOS, only the level of IL-6 in the follicular fluid was significantly lower in the pregnant group than in the nonpregnant group. In addition, for both PCOS and non-patients with PCOS, compared with those in the pregnant group, patients in the nonpregnant group showed more pronounced signs of anxiety and depression. Finally, the factors that were significantly different between the two subgroups (pregnancy and nonpregnancy) of patients with or without PCOS were identified by an independent sample t test first and further analysed by multilayer perceptron (MLP) and random forest (RF) models to distinguish the two clinical pregnancy outcomes according to the classification function. The accuracy of the RF model in predicting pregnancy outcomes in patients with or without PCOS was 95.6% and 91.1%, respectively. The RF model is more suitable than the MLP model for predicting pregnancy outcomes in IVF patients. This study not only identified inflammatory factors that can affect embryonic development and assessed the anxiety and depression tendencies of PCOS patients, but also constructed an AI model that predict pregnancy outcomes through machine learning methods, which is a beneficial clinical tool.


Asunto(s)
Líquido Folicular , Síndrome del Ovario Poliquístico , Resultado del Embarazo , Humanos , Femenino , Líquido Folicular/metabolismo , Embarazo , Síndrome del Ovario Poliquístico/psicología , Síndrome del Ovario Poliquístico/metabolismo , Adulto , Aprendizaje Automático , Fertilización In Vitro , Inflamación/metabolismo , Interleucina-6/metabolismo , Interleucina-6/análisis , Emociones , Infertilidad Femenina/metabolismo , Infertilidad Femenina/psicología , Depresión/metabolismo , Depresión/psicología , Proteína C-Reactiva/análisis , Proteína C-Reactiva/metabolismo
20.
Reprod Sci ; 2024 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-38561472

RESUMEN

Endometriosis (EMT) -related infertility has been a challenge for clinical research. Many studies have confirmed that abnormal alterations in the immune microenvironment and glycolysis are instrumental in causing EMT-related infertility. Recently, our research team identified several key glycolysis-immune-related genes in the endometrial cells of EMT patients. This study aimed to further investigate the expression patterns of pyruvate dehydrogenase kinase 3 (PDK3), glypican-3 (GPC3), and alcohol dehydrogenase 6 (ADH6), which are related to glycolysis and immunity, in the follicular microenvironment of infertile patients with EMT using enzyme-linked immunosorbent assay (ELISA) and quantitative real-time polymerase chain reaction (qRT-PCR) assays. According to the results, compared to the patients with tubal factor infertility, the concentrations of PDK3 and GPC3 were considerably increased in the follicular environment of EMT patients, while ADH6 expression was significantly reduced. The number of oocytes retrieved, the transferable embryo rate, and the cumulative clinical pregnancy rate of EMT patients were significantly reduced, and there was a correlation with the level of PDK3, GPC3, and ADH6 in Follicular Fluid (FF). The area under the receiver operating characteristic (ROC) curve for predicting clinical pregnancy in infertile patients with EMT for PDK3, GPC3, ADH6, and their combination was 0.732, 0.705, 0.855, and 0.879, respectively (P < 0.05). In conclusion, our research indicates that glycolysis-immune-related genes may contribute to infertility in EMT patients through immune infiltration, and disruption of mitochondrial and oocyte functions. The combined detection of PDK3, GPC3, and ADH6 in FF helps to predict clinical pregnancy outcomes in infertile patients with EMT.

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