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BACKGROUND: Acral melanoma, characterized by its aggressiveness and poor prognosis compared to other melanoma subtypes, poses significant challenges in clinical management. However, the molecular underpinnings driving the biological and clinical features of this disease remain poorly understood. OBJECTIVES: In this study, our aim was to elucidate the molecular landscape and the correlation between subtypes and clinical features of acral melanoma. METHODS: We conducted comprehensive analyses to dissect the molecular characteristics of acral melanoma, employing a combination of multi-omics data analysis and network-based disease gene prediction algorithms. Single-cell RNA-Seq data were utilized to investigate the contribution of immunocytes to the molecular classification of acral melanoma. Additionally, we used clinical samples to validate the correlation between new subtypes and the prognosis of acral melanoma and the expression of subtype markers and verified the interaction between macrophages and acral melanoma cells at cellular level. RESULTS: Our study reveals the existence of two distinct subtypes of acral melanoma exhibiting marked differences in clinical behaviour, cellular and molecular mechanisms. We identified a robust biomarker panel (EREG, VSIG4, FCGR3A and RAB20) that accurately distinguishes these two subtypes with an impressive AUC of 0.946, validated using clinical samples. Subtype I, characterized by thinner Breslow thickness, demonstrates a favourable prognosis, whereas Subtype II represents a high-risk subtype with a propensity for dermal invasion. Notably, the signature gene EREG of Subtype I is enriched in FCN1+ macrophages, known for promoting inflammatory and immune responses. Conversely, signature genes VSIG4 and FCGR3A of Subtype II are enriched in SPP1+ macrophages, which exhibit significant crosstalk with tumour cells. CONCLUSIONS: Our findings significantly enhance the understanding of the molecular landscape of acral melanoma and offer novel insights into its clinical management by identifying distinct subtypes and potential therapeutic targets. The findings have to be confirmed in different cohorts in the future for full validation.
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Salicylic acid is a commonly used anti-spoilage agent to prevent browning and quality degradation during potato processing, yet its precise mechanism remains unclear. This study elucidates the role of StuPPO2, a functional protein in Favorita potato shreds, in relation to the anti-browning and starch degradation effects of 52 SA analogues. By employing molecular docking and Gaussian computing, SA localizes within the hydrophobic cavity of StuPPO2, facilitated by hydroxyl and carboxyl groups. The inhibitory effect depends on the distribution pattern of the maximal electrostatic surface potential, requiring hydroxyl ion potentials of >56 kcal/mol and carboxyl ion potentials of >42 kcal/mol, respectively. Multiomics analysis, corroborated by validation tests, indicates that SA synthetically suppresses activities linked to defense response, root regeneration, starch degradation, glycoalkaloids metabolism, and potato shred discoloration, thereby preserving quality. Furthermore, SA enhances antimicrobial and insect-repellent aromas, thereby countering biotic threats in potato shreds. These collective mechanisms underscore SA's anti-spoilage properties, offering theoretical foundations and potential new anti-browning agents for agricultural preservatives.
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Ácido Salicílico , Solanum tuberosum , Solanum tuberosum/química , Solanum tuberosum/metabolismo , Ácido Salicílico/química , Ácido Salicílico/farmacologia , Proteínas de Plantas/química , Proteínas de Plantas/metabolismo , Simulação de Acoplamento Molecular , Tubérculos/química , Conservantes de Alimentos/farmacologia , Conservantes de Alimentos/química , Manipulação de Alimentos , Conservação de Alimentos/métodosRESUMO
Myocardial infarction (MI) is a common type of cardiovascular disease. The incidence of ventricular remodeling dysplasia and heart failure increases significantly after MI. The objective of this study is to investigate whether erythropoietin hepatocellular receptor B2 (EPHB2) can regulate myocardial injury after MI and explore its regulatory pathways. EPHB2 is significantly overexpressed in the heart tissues of MI mice. The downregulation of EPHB2 alleviates the cardiac function damage after MI. Knockdown EPHB2 alleviates MI-induced myocardial tissue inflammation and apoptosis, and myocardial fibrosis in mice. EPHB2 knockdown significantly inhibits the activation of mitogen activated kinase-like protein (MAPK) pathway in MI mice. Moreover, EPHB2 overexpression significantly promotes the phosphorylation of MAPK pathway-related protein, which can be reversed by MAPK-IN-1 (an MAPK inhibitor) treatment. In conclusion, silencing EPHB2 can mitigate MI-induced myocardial injury by inhibiting MAPK signaling in mice, suggesting that targeting EPHB2 can be a promising therapeutic target for MI-induced myocardial injury.
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Sistema de Sinalização das MAP Quinases , Infarto do Miocárdio , Receptor EphB2 , Animais , Infarto do Miocárdio/genética , Infarto do Miocárdio/metabolismo , Infarto do Miocárdio/patologia , Camundongos , Receptor EphB2/genética , Receptor EphB2/metabolismo , Sistema de Sinalização das MAP Quinases/genética , Masculino , Técnicas de Silenciamento de Genes , Apoptose , Camundongos Endogâmicos C57BL , Miocárdio/metabolismo , Miocárdio/patologia , Modelos Animais de DoençasRESUMO
Gynecological cancer represents a significant global health challenge, and conventional treatment modalities have demonstrated limited efficacy. However, recent investigations into immune checkpoint pathways have unveiled promising opportunities for enhancing the prognosis of patients with cancer. Among these pathways, TIGIT has surfaced as a compelling candidate owing to its capacity to augment the immune function of NK and T cells through blockade, thereby yielding improved anti-tumor effects and prolonged patient survival. Global clinical trials exploring TIGIT blockade therapy have yielded promising preliminary findings. Nevertheless, further research is imperative to comprehensively grasp the potential of TIGIT-based immunotherapy in optimizing therapeutic outcomes for gynecological cancers. This review primarily delineates the regulatory network and immunosuppressive mechanism of TIGIT, expounds upon its expression and therapeutic potential in three major gynecological cancers, and synthesizes the clinical trials of TIGIT-based cancer immunotherapy. Such insights aim to furnish novel perspectives and serve as reference points for subsequent research and clinical application targeting TIGIT in gynecological cancers.
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Neoplasias dos Genitais Femininos , Receptores Imunológicos , Humanos , Imunoterapia , Linfócitos T , Neoplasias dos Genitais Femininos/terapiaRESUMO
Trace elements in atmospheric particulate matter play a significant role in air quality, human health, and biogeochemical cycles. In this study, the trace elements (Ca, Al, K, Fe, Na, Mg, Zn, Pb, Mn, Ti, Cu, Cr, Sr, Ni) in PM2.5 samples collected at the summit of Mt. Lushan were analyzed to quantify their abundance, source, transport, and health risks. During the whole sampling period, the major trace elements was Ca, Al, and K. While the trace metals with the lowest concentrations were Sr, Ni, Rb, and Cd. The trace elements were influenced by air mass transport routes, exhibiting an increasing trend of crustal elements in the northwesterly airmass and anthropogenic elements (Zn, Mn, Cu, and Ni) in the easterly air masses. Construction dust, coal + biomass burning, vehicle emission, urban nitrate-rich + urban waste incineration emissions, and soil dust + industry emissions were common sources of PM2.5 on Mt. Lushan. Different air mass transport routes had various source contribution patterns. These results indicate that trace elements at Mt. Lushan are influenced by regional anthropogenic emissions and monsoon-dominated trace element transport. The total resulting cancer risk value that these elements posed were below the acceptable risk value of 1 × 10-6, while the non-carcinogenic risk value (1.72) was higher than the safety level, suggesting that non-carcinogenic effects due to these trace elements inhalation were likely to occur. Vehicle emission and coal + biomass burning were the common dominant sources of non-cancer risks posed by trace elements at Mt. Lushan.
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Poluentes Atmosféricos , Oligoelementos , Humanos , Poluentes Atmosféricos/análise , Emissões de Veículos/análise , Oligoelementos/análise , Monitoramento Ambiental/métodos , Material Particulado/análise , Poeira/análise , China , Carvão Mineral/análiseRESUMO
ETHNOPHARMACOLOGICAL RELEVANCE: Early brain damage (EBI) following subarachnoid hemorrhage (SAH) is a long-lasting condition with a high occurrence. However, treatment options are restricted. Wu-zhu-yu Decoction (WZYD) can treat headaches and vomiting, which are similar to the early symptoms of subarachnoid hemorrhage (SAH). However, it is yet unknown if WZYD can reduce EBI following SAH and its underlying mechanisms. AIM OF THE STUDY: This study aimed to investigate whether WZYD protects against EBI following SAH by inhibiting oxidative stress through activating nuclear factor erythroid 2-related factor 2 (Nrf2)/heme oxygenase-1 (HO-1) signaling via Sirtuin 6 (SIRT6)-mediated histone H3 lysine 56 (H3K56) deacetylation. MATERIALS AND METHODS: In the current investigation, the principal components of WZYD were identified using high-performance liquid chromatography-diode array detection (HPLC-DAD). The SAH model in rats using the internal carotid artery plug puncture approach and the SAH model in primary neurons using hemoglobin incubation were developed. WZYD with different doses (137 mg kg-1, 274 mg kg-1, 548 mg kg-1) and the positive drug-Nimodipine (40 mg kg-1) were intragastrically administered in SAH model rats, respectively. The PC12 cells were cultured with corresponding medicated for 24h. In our investigation, neurological scores, brain water content, Evans blue leakage, Nissl staining, TUNEL staining, oxidative stress, expression of apoptosis-related proteins, and Nrf2/HO-1 signaling were evaluated. The interaction between SIRT6 and Nrf2 was detected by co-immunoprecipitation. SIRT6 knockdown was used to confirm its role in WZYD's neuroprotection. RESULTS: The WZYD treatment dramatically reduced cerebral hemorrhage and edema, and enhanced neurological results in EBI following SAH rats. WZYD administration inhibited neuronal apoptosis via reducing the expression levels of Cleaved cysteinyl aspartate specific proteinase-3(Cleaved Caspase-3), cysteinyl aspartate specific proteinase-3(caspase-3), and Bcl-2, Associated X Protein (Bax) and increasing the expression of B-cell lymphoma-2(Bal2). It also decreased reactive oxygen species and malondialdehyde levels and increased Nrf2 and HO-1 expression in the rat brain after SAH. In vitro, WZYD attenuated hemoglobin-induced cytotoxicity, oxidative stress and apoptosis in primary neurons. Mechanistically, WZYD enhanced SIRT6 expression and H3K56 deacetylation, activated Nrf2/HO-1 signaling, and promoted the interaction between SIRT6 and Nrf2. Knockdown of SIRT6 abolished WZYD-induced neuroprotection. CONCLUSIONS: WZYD attenuates EBI after SAH by activating Nrf2/HO-1 signaling through SIRT6-mediated H3K56 deacetylation, suggesting its therapeutic potential for SAH treatment.
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Lesões Encefálicas , Fármacos Neuroprotetores , Sirtuínas , Hemorragia Subaracnóidea , Ratos , Animais , Antioxidantes/farmacologia , Antioxidantes/uso terapêutico , Antioxidantes/metabolismo , Fator 2 Relacionado a NF-E2/metabolismo , Caspase 3 , Ratos Sprague-Dawley , Hemorragia Subaracnóidea/complicações , Hemorragia Subaracnóidea/tratamento farmacológico , Hemorragia Subaracnóidea/metabolismo , Ácido Aspártico/farmacologia , Ácido Aspártico/uso terapêutico , Lesões Encefálicas/tratamento farmacológico , Apoptose , Hemoglobinas/farmacologia , Hemoglobinas/uso terapêutico , Fármacos Neuroprotetores/farmacologia , Fármacos Neuroprotetores/uso terapêuticoRESUMO
BACKGROUND: Chronic obstructive pulmonary disease (COPD) has impacted approximately 390 million people worldwide and the morbidity is increasing every year. However, due to the poor treatment efficacy of COPD, exploring novel treatment has become the hotpot of study on COPD. Endothelial progenitor cells (EPCs) aging is a possible molecular way for COPD development. We aimed to explore the effector whether intravenous administration of EPCs has therapeutic effects in COPD mice. METHODS: COPD mice model was induced by cigarette smoke exposure and EPCs were injected intravenously to investigate their effects on COPD mice. At day 127, heart, liver, spleen, lung and kidney tissues of mice were harvested. The histological effects of EPCs intervention on multiple organs of COPD mice were detected by morphology assay. Quantitative real-time PCR and Western blotting were used to detect the effect of EPCs intervention on the expression of multi-organ senescence-related indicators. And we explored the effect of EPCs systematically intervening on senescence-related USP7/p300 pathway. RESULTS: Compared with COPD group, senescence-associated ß-galactosidase activity was decreased, protein and mRNA expression of p16 was down-regulated, while protein and mRNA expression of cyclin D1 and TERT were up-regulated of multiple organs, including lung, heart, liver, spleen and kidney in COPD mice after EPCs system intervention. But the morphological alterations of the tissues described above in COPD mice failed to be reversed. Mechanistically, EPCs systemic administration inhibited the expression of mRNA and protein of USP7 and p300 in multiple organs of COPD mice, exerting therapeutic effects. CONCLUSIONS: EPCs administration significantly inhibited the senescence of multiple organs in COPD mice via down-regulating USP7/p300 pathway, which presents a possibility of EPCs therapy for COPD.
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Células Progenitoras Endoteliais , Doença Pulmonar Obstrutiva Crônica , Transdução de Sinais , Animais , Humanos , Camundongos , Senescência Celular , Células Progenitoras Endoteliais/patologia , Doença Pulmonar Obstrutiva Crônica/genética , Doença Pulmonar Obstrutiva Crônica/terapia , Doença Pulmonar Obstrutiva Crônica/metabolismo , RNA Mensageiro/metabolismo , Peptidase 7 Específica de Ubiquitina/metabolismo , Regulação para BaixoRESUMO
Sepsis is a hyper-heterogeneous syndrome in which the systemic inflammatory response persists throughout the course of the disease and the inflammatory and immune responses are dynamically altered at different pathogenic stages. Gasdermins (GSDMs) proteins are pore-forming executors in the membrane, subsequently mediating the release of pro-inflammatory mediators and inflammatory cell death. With the increasing research on GSDMs proteins and sepsis, it is believed that GSDMs protein are one of the most promising therapeutic targets in sepsis in the future. A more comprehensive and in-depth understanding of the functions of GSDMs proteins in sepsis is important to alleviate the multi-organ dysfunction and reduce sepsis-induced mortality. In this review, we focus on the function of GSDMs proteins, the molecular mechanism of GSDMs involved in sepsis, and the regulatory mechanism of GSDMs-mediated signaling pathways, aiming to provide novel ideas and therapeutic strategies for the diagnosis and treatment of sepsis.
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Gasderminas , Sepse , Humanos , Morte Celular , Mediadores da Inflamação , SíndromeRESUMO
BACKGROUND: GRP78 is a molecular chaperone protein in the endoplasmic reticulum that is involved in protein assembly and quality control, and it participates in ER stress regulation of endoplasmic reticulum stress pathways. Studies have confirmed that GRP78 gene is highly expressed in a variety of tumors and is involved in different biological functions. PURPOSE: The present review highlights the involvement of the GRP78 gene in regulating the development of cervical cancer by promoting the proliferation and invasion of cervical cancer cells as well as by inhibiting apoptosis and promoting the Warburg effect. High expression of GRP78 is positively correlated with chemotherapy resistance in cervical cancer. GRP78 plays an anticancer role in cervical cancer by regulating autophagy and apoptosis. Mediated immune CD8 + T cells regulate tumor cell immunity and play a role in the application of the HPV vaccine. CONCLUSIONS: GRP78 plays a multifunctional role in cervical cancer and has important therapeutic and diagnostic value.
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Chaperona BiP do Retículo Endoplasmático , Neoplasias do Colo do Útero , Feminino , Humanos , Apoptose/genética , Estresse do Retículo Endoplasmático/genética , Neoplasias do Colo do Útero/diagnóstico , Neoplasias do Colo do Útero/genética , Neoplasias do Colo do Útero/terapiaRESUMO
Background: Uterine corpus endometrial carcinoma (UCEC) belongs to a group of epithelial malignant tumors. Icaritin is the main active compound of Epimedii Folium. Icaritin has been utilized to induce UCEC cells to death. Methods: We wished to identify potential targets for icaritin in the treatment of UCEC, as well as to provide a groundwork for future studies into its pharmacologic mechanism of action. Network pharmacology was employed to conduct investigations on icaritin. Target proteins were chosen from the components of icaritin for UCEC treatment. A protein-protein interaction (PPI) network was established using overlapping genes. Analyses of enrichment of function and signaling pathways were undertaken using the Gene Ontology (GO) and Kyoto Encyclopedia of Genes and Genomes (KEGG) databases, respectively, to select "hub genes". Finally, experiments were carried out to ascertain the effect of icaritin on endometrial cancer (HEC-1-A) cells. Results: We demonstrated that icaritin has bioactive components and putative targets that are therapeutically important. Icaritin treatment induced sustained activation of the phosphoinositide 3-kinase/protein kinase B (PI3K/Akt pathway) and inhibited growth of HEC-1-A cells. Conclusion: Our data provide a rationale for preclinical and clinical evaluations of icaritin for UCEC therapy.
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BACKGROUND: The tumor microenvironment plays a crucial role in the oncogenesis and treatment of diffuse large B-cell lymphoma (DLBCL). The H3K9me3-specific histone methyltransferase Suppressor of variegation 3-9 homolog 1 (SUV39H1) is a significant gene that promotes the progression of various malignancies. However, the specific expression of SUV39H1 in DLBCL remains unclear. METHODS: By retrieving data from GEPIA, UCSC XENA and TCGA public databases, we observed the high expression of SUV39H1 in DLBCL. Combined with an immunohistochemical validation assay, we analyzed our hospital's clinical characteristics and prognosis of 67 DLBCL patients. The results showed that high SUV39H1 expression was closely associated with age over 50 years (P = 0.014) and low albumin levels (P = 0.023) of patients. Furthermore, the experiments in vitro were deployed to evaluate the regulation of SUV39H1 on the DLBCL immune microenvironment. RESULTS: The results showed that high SUV39H1 expression was closely associated with age over 50 years (P = 0.014) and low albumin levels (P = 0.023) of patients. The prognostic analysis showed that the high SUV39H1 expression group had a lower disease-free survival (DFS) rate than the low SUV39H1 expression group (P < 0.05). We further discovered that SUV39H1 upregulated the expression of CD86+ and CD163+ tumor-associated macrophages by DLBCL patients' tissues and cell experiments in vitro (P < 0.05). And SUV39H1-associated T lymphocyte subsets and cytokines IL-6/CCL-2 were downregulated in DLBCL (P < 0.05). CONCLUSIONS: In summary, SUV39H1 might be not only a potential target for treating DLBCL but also a clinical indicator for doctors to evaluate the trend of disease development.
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Linfoma Difuso de Grandes Células B , Humanos , Pessoa de Meia-Idade , Prognóstico , Linfoma Difuso de Grandes Células B/tratamento farmacológico , Subpopulações de Linfócitos T/metabolismo , Subpopulações de Linfócitos T/patologia , Citocinas/metabolismo , Albuminas/uso terapêutico , Microambiente Tumoral , Metiltransferases/metabolismo , Proteínas Repressoras/metabolismoRESUMO
Lung cancer with the highest mortality poses a great threat to human health. Ferroptosis therapy has recently been raised as a promising strategy for lung cancer treatment by boosting the reactive species (ROS) production and lipid peroxidation (LPO) accumulation intracellularly. However, the insufficient intracellular ROS level and the unsatisfactory drug accumulation in lung cancer lesions hamper the efficacy of ferroptosis therapy. Here, an inhalable biomineralized liposome LDM co-loaded with dihydroartemisinin (DHA) and pH-responsive calcium phosphate (CaP) was constructed as a ferroptosis nanoinducer for achieving Ca2+-burst-centered endoplasmic reticulum (ER) stress enhanced lung cancer ferroptosis therapy. Equipped with excellent nebulization properties, about 6.80-fold higher lung lesions drug accumulation than intravenous injection made the proposed inhalable LDM an ideal nanoplatform for lung cancer treatment. The Fenton-like reaction mediated by DHA with peroxide bridge structure could contribute to intracellular ROS production and induce ferroptosis. Assisted by DHA-mediated sarco-/endoplasmic reticulum calcium ATPase (SERCA) inhibition, the initial Ca2+ burst caused by CaP shell degradation triggered the Ca2+-mediated intense ER stress and subsequently induced mitochondria dysfunction to further boost ROS accumulation, which strengthens ferroptosis. The second Ca2+ burst occurred as a result of Ca2+ influx through ferroptotic pores on cell membranes, thus sequentially constructing the lethal "Ca2+ burst-ER stress-ferroptosis" cycle. Consequently, the Ca2+-burst-centered ER stress enhanced ferroptosis process was confirmed as a cell swelling and cell membrane disruption process driven by notable intracellular ROS and LPO accumulation. The proposed LDM showed an encouraging lung retention property and extraordinary antitumor ability in an orthotropic lung tumor murine model. In conclusion, the constructed ferroptosis nanoinducer could be a potential tailored nanoplatform for nebulization-based pulmonary delivery and underscore the application of Ca2+-burst-centered ER stress enhanced lung cancer ferroptosis therapy.
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Ferroptose , Neoplasias Pulmonares , Camundongos , Animais , Humanos , Lipossomos , Espécies Reativas de Oxigênio/metabolismo , Estresse do Retículo Endoplasmático , Neoplasias Pulmonares/tratamento farmacológico , Pulmão/metabolismo , Linhagem Celular TumoralRESUMO
Objective:To evaluate the efficacy of functional endoscopic sinus surgeryï¼FESSï¼ and radical endoscopic sinus surgeryï¼RESSï¼ in eosinophilic chronic sinusitis with nasal polypsï¼EosCRSwNPï¼. Methods:A total of 44 patients diagnosed with EosCRSwNP in the Department of Otorhinolaryngology Head and Neck Surgery, Henan Provincial People's Hospital from July 1st, 2020 to August 1st, 2021 were included, the percentage of eosinophils in leukocytes in all patients included was more than 3.05%. The patients were randomly divided into FESS group and RESS group according to random number table. The visual analogue scale ï¼VASï¼ score, Lund-Kennedy score and sino-nasal outcome test-22 ï¼SNOT-22ï¼ were compared between the two groups before operation, 1 month, 3 months, 6 months and 1 year after operation. Results:At 1 year after operation, the scores of the two groups were significantly improved compared with those before operation, and the differences were statistically significant ï¼P<0.01ï¼. There were significant differences in nasal endoscopic score, VAS score and SNOT-22 score between the two groupsï¼P=0.01, P=0.03, P=0.03ï¼. The recurrence rate of RESS group was 26.09%ï¼6/23ï¼ and that of FESS group was 61.90%ï¼13/21ï¼, and the difference was statistically significantï¼P=0.04ï¼. Conclusion:Both RESS and FESS can improve nasal symptoms and promote olfactory recovery in EosCRSwNP patients, but RESS has more advantages in reducing recurrence and improving the prognosis of patients.
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Pólipos Nasais , Rinite , Sinusite , Humanos , Pólipos Nasais/complicações , Pólipos Nasais/cirurgia , Pólipos Nasais/diagnóstico , Rinite/cirurgia , Rinite/diagnóstico , Sinusite/cirurgia , Sinusite/diagnóstico , Endoscopia , Olfato , Doença CrônicaRESUMO
INTRODUCTION: Hepatocellular carcinoma (HCC) is the most deadly cancer. Many signal pathways are implicated in HCC development, including sonic hedgehog (SHH). Propofol is an anesthetic commonly used in surgery. Recent studies have reported that propofol inhibits tumorigenesis and the development of HCC in a dose-dependent manner. The study aimed to identify the mechanism of how the propofol-mediated SHH-signaling molecule works in HCC. METHODS: Cell proliferation, apoptosis, and invasion were examined, respectively, through colony formation, TUNEL, caspase-3 activity, and transwell assays. Protein levels of SHH, Ptch1, Smo, and Gli1 were determined via Western blot. RESULTS: Propofol could inhibit cell proliferation, migration, and invasion and induce apoptosis via suppression on SHH to inactivate the SHH pathway. By mechanistic assays, miR-340-5p was identified to target SHH and negatively regulate SHH. Long intergenic non-protein coding RNA 475 (LINC00475) was the endogenous sponge of miR-340-5p to upregulate SHH. Finally, the rescue assays were implemented. The activator of the SHH pathway completely rescued the effects of LINC00475 and SHH in propofol-induced HCC cells. CONCLUSION: Propofol inhibits HCC cell malignant behaviors via repressing LINC00475 to suppress SHH, thus inactivating the SHH pathway. These new findings might contribute to the understanding and application of propofol in HCC.
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Carcinoma Hepatocelular , Neoplasias Hepáticas , MicroRNAs , Propofol , Humanos , Carcinoma Hepatocelular/genética , Neoplasias Hepáticas/genética , Proteínas Hedgehog/metabolismo , Proteínas Hedgehog/farmacologia , Linhagem Celular Tumoral , Transdução de Sinais , Proliferação de CélulasRESUMO
Recent studies have highlighted the development prospects of magnetic hyperthermia in cancer therapy. A few studies on the application of Fe3 O4 nanospheres for the magnetic hyperthermia of gynecological malignancies have achieved certain efficacy, but there was no visible progress currently. In this work, Fe3 O4 nanospheres modified with polyetherimide (PEI) and folic acid (FA) were synthesized using a hydrothermal method for possible utility in biocompatible and active tumor-targeting magnetic induction hyperthermia. The PEI- and FA-coated Fe3 O4 nanospheres showed high crystallinity, well-dispersed spherical structures and ideal Ms value. As a result, the designed Fe3 O4 @ PEI@FA nanospheres achieved higher specific absorption rate (SAR) values at 360 kHz and 308 Oe, as well as excellent biocompatibility in Hela, SKOV3, HEC-1-A and NIH3T3 cells. These nanospheres can be used as an optimal heating agent for the magnetic hyperthermia treatment of gynecological cancers.
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Hipertermia Induzida , Nanosferas , Animais , Camundongos , Humanos , Ácido Fólico/farmacologia , Células NIH 3T3 , Hipertermia Induzida/métodos , Fenômenos MagnéticosRESUMO
OBJECTIVES: Gastric signet ring cell carcinoma is a rare and highly malignant adenocarcinoma, which is characterized by early metastasis, rapid progression and poor prognosis. Several studies have shown that early-stage gastric signet ring cell carcinoma may have equal or better prognosis than other types of gastric cancer. However, most of the early-stage lesions are difficult to detect by endoscopy. We aim to illustrate the difficulty of early detection of gastric signet ring cell carcinoma with mucosal atrophy. METHODS: The endoscopic and pathological features of two female cases were analyzed by upper gastrointestinal white light endoscopy combined with narrow-band imaging and endoscopic biopsy. RESULTS: Two female cases were diagnosed with early-stage gastric signet ring cell carcinoma with atrophic background mucosa occurring in the middle and lower part of the stomach. Both lesions less than 2.0 cm in diameter were surgically removed and identified as intramucosal adenocarcinoma. CONCLUSION: We can roughly identify the demarcation of the lesion by combining white light endoscopy and narrow-band imaging, and slightly irregular microsurface and microvascular pattern of the lesion were found via magnifying endoscopic observation, but the demarcation can hardly be accurately identified.
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Adenocarcinoma , Carcinoma de Células em Anel de Sinete , Neoplasias Gástricas , Humanos , Feminino , Neoplasias Gástricas/diagnóstico , Neoplasias Gástricas/cirurgia , Neoplasias Gástricas/patologia , Carcinoma de Células em Anel de Sinete/diagnóstico , Carcinoma de Células em Anel de Sinete/cirurgia , Carcinoma de Células em Anel de Sinete/patologia , Adenocarcinoma/diagnóstico , Adenocarcinoma/cirurgia , Adenocarcinoma/patologia , Endoscopia Gastrointestinal , Mucosa Gástrica/diagnóstico por imagem , Mucosa Gástrica/cirurgia , Mucosa Gástrica/patologiaRESUMO
BACKGROUND: Doxorubicin, bleomycin, vinblastine, and dacarbazine (ABVD) has been regarded as the standard treatment regimen for classical Hodgkin lymphoma. In recent years, ABVD-like regimens, which emerged due to shortages and the lung toxicity of bleomycin or the emergence of immune checkpoint inhibitors and antibody-drug conjugates, may be favorable, but have not yet been tested. METHODS: We compared the outcomes of ABVD with ABVD-like regimens, which include bleomycin was completely or partially omitted; meanwhile, etoposide or PD-1 inhibitors were added. RESULTS: 5-Year progression-free survival (PFS) was higher for ABVD than ABVD-like regimens in young patients (82.1% vs. 67.0%, p = 0.029), patients with serum beta-2 microglobulin (ß2-MG) ≥ 1.85 mg/L (75.8% vs. 57.6%, p = 0.046), and advanced-stage patients with IPS score 4-7(63.1%, 18.3%, p = 0.038). For elderly (60.5% vs.76.1%, p = 0.089), patients with ß2-MG < 1.85 mg/L (83.1% vs 76.1%, p = 0.282), and advanced-stage patients with IPS score 0-3(84.6% vs. 81.3%, p = 0.476), 5-year PFS for ABVD did not differ from ABVD-like regimens. Elderly patients treated with bleomycin-free regimens showed a better survival trend compared with ABVD (99.3% vs. 61.3%, p = 0.270). CONCLUSION: ABVD is superior to ABVD-like regimens in achieving PFS in young patients or patients with poor prognosis including high IPS score and ß2-MG level. ABVD-like regimens are as effective as ABVD in elderly or low-risk patients including low IPS score and ß2-MG level; elderly patients treated with bleomycin-free regimens exhibit a better survival trend compared with ABVD.
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Doença de Hodgkin , Humanos , Idoso , Doença de Hodgkin/tratamento farmacológico , Doença de Hodgkin/patologia , Vimblastina/efeitos adversos , Doxorrubicina/efeitos adversos , Bleomicina/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/efeitos adversos , Dacarbazina/efeitos adversos , Etoposídeo/efeitos adversos , Prednisona/efeitos adversos , China/epidemiologia , Vincristina/efeitos adversosRESUMO
Background: Mobile phones are becoming indispensable for life and have changed various aspects of people's lives. The psychological impacts of excessive mobile phone use have emerged as an impressive problem among college students. However, little is known about the associations of mobile phone addiction with suicide ideation and suicide attempt. Methods: A cross-sectional study was conducted with students from six universities in 2022. We collected the socio-demographic characteristics, suicide ideation, suicide attempt, psychosocial factors (depressive symptoms, social support, sleep quality), and health-related characteristics (smoking, drinking, body mass index). Mobile phone addiction was ascertained by the Mobile Phone Addiction Tendency Scale (MPATS). The associations of mobile phone addiction with suicide ideation and suicide attempt were estimated using binary logistic regression and restricted cubic splines regression. Results: A total of 18,723 college students [6,531 males (34.9%) and 12,192 females (65.1%)] were included in the final analysis. Eleven percent of participants had a history of suicide ideation, and 1.8% of participants had engaged in suicide attempt. A total of 5,553 students (29.7%) met the criteria of mobile phone addiction (MPATS score ≥48), and the average score on the MPATS was 39.5 ± 13.0. After adjustment for potential covariates, mobile phone addiction was significantly associated with increased odds of suicide ideation (OR, 1.70; 95% CI, 1.53-1.88) and suicide attempt (OR, 1.48; 95% CI, 1.18-1.86). Gender did not affect the associations of mobile phone addiction with suicide ideation and suicide attempt (P for interaction > 0.05). The restricted cubic splines regression displayed a nonlinear dose-response association between MPATS score and risk of suicide ideation (P for non-linearity < 0.001), while a monotonically increasing risk of suicide attempt was found to be associated with an increasing MPATS score (P for non-linearity = 0.420). Conclusions: Mobile phone addiction is associated with suicide ideation and suicide attempt among college students. The findings indicate that early examination, prevention, and intervention for mobile phone addiction may benefit the prevent and control of suicide.
Assuntos
Tentativa de Suicídio , Dependência de Tecnologia , Masculino , Feminino , Humanos , Tentativa de Suicídio/psicologia , Universidades , Estudos Transversais , Fatores de Risco , Inquéritos e Questionários , China/epidemiologiaRESUMO
Root rot of Paris polyphylla has received widespread attention due to its threat to yield and leads to serious economic losses. However, the relationship among the rhizosphere microbial community, metabolites and root rot disease remained largely unexplored. Herein, we used integrated 16S rRNA, ITS, RNA sequencing and UPLC-MS/MS to systematically investigate the differences between healthy and diseased P. polyphylla. We found that root rot reduced the microbial diversity in the diseased P. polyphylla compared with the healthy control. The relative abundance of the bacterial phylum Actinobacteria increased in the diseased rhizome of P. polyphylla. For the fungal community, root rot disease contributed to an increased relative abundance of Ascomycota and decreased Glomeromycota at the phylum level. The transcriptomic results showed that the differently expressed genes were significantly enriched in the "Biosynthesis of various alkaloids", "flavonoid biosynthesis" and "isoflavonoid biosynthesis" and "Phenylpropanoid biosynthesis" was dramatically enriched in healthy P. polyphylla compared with that in diseased P. polyphylla. Likewise, the metabolomic results showed that the biosynthesis of secondary metabolites and metabolic pathways was found to be significantly enriched by differential metabolites. Taken together, the study of combining metabolomics with microbiomes can help us enhance our understanding of the mechanisms of plant resistance to root rot disease, thereby discovering specific metabolites and microorganisms that can resist pathogen infection in P. polyphylla.