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BACKGROUND: The introduction of the anti-PD-1 antibody has greatly improved the clinical outcomes of patients with non-small cell lung cancer (NSCLC). In this study, we retrospectively analyzed the efficacy of PD-1 antibody-based therapy in patients with locally advanced inoperable or metastatic NSCLC and reported an association between peripheral blood biomarkers and clinical response in these patients. METHODS: This single-center study included medical record data of patients with NSCLC treated with the PD-1 antibody as a first-line or subsequent line of treatment, either as monotherapy or in combination with chemotherapy. The patients were enrolled from 2020 to 2022. We dynamically evaluated multiple Th1 and Th2 cytokines in the blood serum and analyzed the phenotype of T cells from the peripheral blood to explore the correlation between cytokine levels, T cell phenotypes, and clinical response. RESULTS: A total of 88 patients with stage IIIA-IV NSCLC were enrolled, out of which 60 (68.18%) achieved a partial response (PR), 13 (14.77%) had stable disease (SD), and 15 (17.05%) experienced disease progression (PD). The disease control rate was 82.95%. Our results suggested a significant reduction (P = 0.002, P < 0.005) in lymphocyte absolute counts after treatment in patients with PD. Higher levels of IFN-γ (P = 0.023, P < 0.05), TNF-α (P = 0.00098, P < 0.005), IL-4 (P = 0.0031, P < 0.005), IL-5 (P = 0.0015, P < 0.005), and IL-10 (P = 0.036, P < 0.05) were detected in the peripheral blood before treatment in the PR group compared to the PD group. Moreover, patients with high levels of IL-5, IL-13, IL-4, IL-6, IFN-γ, and TNF-α (> 10 ng/mL) had superior progression-free survival compared to those with low levels (< 10 ng/mL). Furthermore, PD-1 expression on CD8+ T cells was higher in patients who showed a PR than in those who did not show a response (SD + PD; P = 0.042, P < 0.05). CONCLUSIONS: The findings of this study imply that the decrease in absolute blood lymphocyte counts after treatment is correlated with disease progression. Serum cytokine levels may predict the effectiveness and survival rates of anti-PD-1 blockade therapy in patients with NSCLC. In addition, PD-1 expression on CD8+ T cells was positively associated with better clinical response. Our findings highlight the potential of peripheral blood biomarkers to predict the effectiveness of PD-1-targeted treatments in patients with NSCLC. Larger prospective studies are warranted to further clarify the value of these biomarkers.
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Carcinoma Pulmonar de Células não Pequenas , Neoplasias Pulmonares , Humanos , Carcinoma Pulmonar de Células não Pequenas/tratamento farmacológico , Linfócitos T CD8-Positivos , Interleucina-4 , Interleucina-5 , Receptor de Morte Celular Programada 1 , Estudos Retrospectivos , Fator de Necrose Tumoral alfa , Neoplasias Pulmonares/tratamento farmacológico , Biomarcadores , Citocinas , Progressão da DoençaRESUMO
BACKGROUND: It has been demonstrated that experiential service-learning is effective in fields including public health and medicine. Preventive Dentistry is a practical course, and Oral Health Examination and Education is a topic that is suitable for teaching with experiential service-learning. This study describes an example of experiential service-learning in Preventive Dentistry named "Oral Health Examination and Education Project" and also evaluates its effectiveness among dental students. METHODS: A total of 108 dental students in their fourth year participated in this project in 2022. The project was composed of six sections: theoretical teaching, field investigation, data collection and analysis, investigation report writing and creating oral health education materials, oral health education and students' evaluation of the project. RESULTS: During this project, students learned how to perform surveys related to oral health, wrote an investigation report, created oral health education materials, and provided oral health education for children. Students were demonstrated an improvement in their academic performance for theoretical knowledge related to Oral Health Examination and Education in comparison with the students in the previous year. Over 90% of students expressed their preference for the learning method of experiential service and believed that it helped them to better understand the course material. They also recommended this teaching method for future classes. CONCLUSIONS: This study indicated that an experiential service-learning approach within this scope was highly beneficial to students because it provided them with the opportunity to understand the practical application of their coursework and obtain valuable experience in the field. This research suggests that oral epidemiology instructors in dental and oral public health programs should pay more attention to incorporate similar experiential projects into their curriculum with the aim of better preparing students for careers in oral public health.
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Saúde Bucal , Aprendizagem Baseada em Problemas , Criança , Humanos , Escolaridade , Estudantes , Saúde PúblicaRESUMO
Academic engagement is vital for college students, yet existing studies reveal inconsistencies in how gender influences academic engagement. Building upon the statistical discrimination theory and identity-based motivation theory, this study develops an integrated model to examine gender differences in college students' academic engagement. Further, the role that gender-role orientation in influencing academic engagement was investigated. Using a sample of 524 college students (Mage = 21.11, SD = 1.98; 47.7% women) from a large university collected in two time periods, the findings indicate that in the Chinese context, women anticipate higher future sex discrimination than men. However, gender-role orientation restores parity between men and women through a moderated mediation: egalitarian gender-role orientation has a stronger effect on women's anticipated future sex discrimination than on men's, resulting in increased academic engagement of women. The findings highlight the need to consider female students' egalitarian beliefs in gender-related academic research.
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Ischaemia-reperfusion (I/R) injury is one of the leading causes of acute kidney injury (AKI). Its pathologic mechanism is quite complex, involving oxidative stress, inflammatory response, autophagy, and apoptosis. Fibroblast growth factor 10 (FGF10) and 5-hydroxydecanoate (5-HD) play essential roles in kidney injury. Rats were divided into four groups: (i) sham group, sham-operated animals with an unconstructed renal artery; (ii) I/R group, kidneys were subjected to 50 min of ischaemia followed by reperfusion for 2 days; (iii) I/R + FGF10 group, animals treated with 0.5 mg/kg FGF10 (i.p.) 1 h before ischaemia; and (iv) 5-HD group, animals treated with 5 mg/kg 5-HD (i.m.) 30 min before FGF10 treatment. Renal injury, apoptosis damage, mitochondrial oxidative damage, mitochondrial membrane potential (MMP), and expression of the ATP-sensitive K+ (KATP) channel subunit Kir6.2 were evaluated. FGF10 treatment significantly alleviated I/R-induced elevation in the serum creatinine level and the number of terminal deoxynucleotidyl transferase-mediated dUTP nick-end labelling-positive tubular cells in the kidney. In addition, FGF10 dramatically ameliorated renal mitochondrial-related damage, including reducing mitochondrial-dependent apoptosis, alleviating oxidative stress, maintaining the mitochondrial membrane potential, and opening the mitochondrial KATP channels. The protective effect of FGF10 was significantly compromised by the ATP-dependent potassium channel blocker 5-HD. Our data suggest that FGF10 offers effective protection against I/R and improves animal survival by attenuating mitochondrial damage.
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Traumatismo por Reperfusão , Ratos , Animais , Fator 10 de Crescimento de Fibroblastos , Traumatismo por Reperfusão/tratamento farmacológico , Rim , Isquemia , Trifosfato de AdenosinaRESUMO
To investigate the mediating role of rumination in the association between childhood maltreatment and suicidal behavior, and the moderating role of regulatory emotional self-efficacy, university students (N = 1,458) from 5 universities in China completed questionnaires in classrooms. Path analyses showed emotional maltreatment had the greatest positive association with suicidal behavior and rumination compared with other types of childhood maltreatment. Rumination partly mediated the relationship between childhood maltreatment and suicidal behavior. High regulatory emotional self-efficacy moderated the relation between ruminating childhood maltreatment and suicidal behavior.
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Maus-Tratos Infantis , Ideação Suicida , Criança , Humanos , Autoeficácia , Emoções , UniversidadesRESUMO
Aim: Endoplasmic reticulum-associated degradation (ERAD), which involves degradation of improperly folded proteins retained in the ER, is implicated in various diseases including chronic kidney disease. This study is aimed to determine the role of ERAD in Klotho deficiency of mice and human kidney tubular epithelial cells (HK-2) with renal interstitial fibrosis (RIF). Methods: Following establishment of a mouse RIF model by unilateral ureteral obstruction (UUO), a specific ERAD inhibitor, Eeyarestatin I (EerI), was administered to experimental animals by intraperitoneal injection. Serum and kidney samples were collected for analysis 10 days after operation. Soluble Klotho levels were measured by enzyme-linked immunosorbent assay, while the degree of kidney injury was assessed by renal histopathology. Renal Klotho expression was determined by quantitative real-time PCR, immunohistochemical and western blotting analyses. ERAD and unfolded protein response (UPR) were evaluated by detecting associated components such as Derlin-1, glucose-regulated protein 78 (GRP78), activating transcription factor 4 (ATF4) and protein disulfide isomerase (PDI). HK-2 cells were exposed to transforming growth factor (TGF)-ß1 with or without EerI, and expressions of related proteins including Klotho, Derlin-1, GRP78, ATF4 and PDI were determined by western blotting analyses. Results: UUO induced severe kidney injuries and RIF. Klotho expression in both serum and kidney tissue was obviously downregulated, while Derlin-1 was notably upregulated, indicating that ERAD was activated to potentially degrade improperly folded Klotho protein in this model. Intriguingly, treatment with EerI led to significantly increased Klotho expression, especially soluble (functional) Klotho. Furthermore, specific inhibition of ERAD increased expression of GRP78, ATF4 and PDI compared with the UUO group. The consistent results in vitro were also obtained in TGF-ß1-treated HK-2 cells exposed to EerI. These observations suggest that UPR was remarkably enhanced in the presence of ERAD inhibition and compensated for excess improperly folded proteins, subsequently contributing to the additional production of mature Klotho protein. Conclusion: ERAD is involved in Klotho deficiency in RIF and its specific inhibition significantly promoted Klotho expression, possibly through enhanced UPR. This may represent a novel regulatory mechanism and new therapeutic target for reversing Klotho deficiency.
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Degradação Associada com o Retículo Endoplasmático/genética , Rim/patologia , Proteínas Klotho/deficiência , Nefrite Intersticial/enzimologia , Obstrução Ureteral/enzimologia , Animais , Modelos Animais de Doenças , Fibrose , Humanos , Hidrazonas/administração & dosagem , Hidroxiureia/administração & dosagem , Hidroxiureia/análogos & derivados , Injeções Intraperitoneais , Túbulos Renais/citologia , Proteínas Klotho/efeitos dos fármacos , CamundongosRESUMO
BACKGROUND: Neoantigens are considered ideal targets for immunotherapy, especially tumor vaccine, because of their strong specificity and immunogenicity. Here, we developed a neoantigen nanovaccine used liposomes with lymph-node targeting characteristic. METHODS: Our nanovaccine was composed of neoantigens, an amphiphilic liposome and an adjuvant Montanide™ ISA 51. Small animal imaging system and immunofluorescence staining were used to identify the distribution of nanovaccines. A subcutaneous-tumor-resection mouse model of melanoma was established to evaluate the anti-tumor efficacy. Flow cytometry was performed to assay the immune responses initiated by nanovaccines. RESULTS: Nanovaccines could traffic to lymph nodes, be uptaken by CD11c+ DCs and promote DCs maturity. After the treatment of our neoantigen nanovaccines, the average recurrence time was extended from 11 to 16 days and the median survival time was even prolonged 7.5 days relative to the control group (NS group). Nanovaccines increased neoantigen-specific T cells to 10-fold of free vaccines, and upregulated Th1 cytokines, such as IFN-γ and TNF-α. The anti-tumor activity of spleen lymphocytes in the nanovaccine group was significantly stronger than that of other groups. However, some immune-inhibitory cells or molecules in tumor microenvironment have been detected upregulated under the immune pressure of neoantigen nanovaccines, such as Tregs and PD-L1. The efficacy of the neoantigen nanovaccine combined with anti-PD1 antibody or Treg inhibiting peptide P60 was better than that of the single treatment. CONCLUSIONS: We developed a general vaccine strategy, triggering specific T cell responses, and provided feasible combination strategies for better anti-tumor efficacy.
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Vacinas Anticâncer , Melanoma , Animais , Antígenos de Neoplasias , Imunidade , Imunoterapia/métodos , Linfonodos , Melanoma/terapia , Camundongos , Microambiente TumoralRESUMO
Lipopolysaccharide (LPS) can induce vascular endothelial injury. Circular RNAs (circRNAs) have been verified to regulate different cellular processes in various diseases. This study intended to explore the potential role and mechanism of circ_0057583 in brain microvascular endothelial cell injury. Human brain microvascular endothelial cells (hBMECs) were exposed to different doses of LPS to induce cell damage. The levels of circ_0057583, microRNA-204-5p (miR-204-5p) and nuclear receptor 4A1 (NR4A1) were detected by quantitative real-time PCR or Western blot assays. Cell viability, apoptosis, inflammation and angiogenesis were assessed by Counting Kit-8 (CCK-8), flow cytometry, enzyme linked immunosorbent assay (ELISA) and tube formation assays. The targeting relationship between miR-204-5p and circ_0057583 or NR4A1 was verified by dual-luciferase reporter assay and RNA immunoprecipitation (RIP) assay. LPS treatment elevated the expression of circ_0057583 and NR4A1, but decreased the expression of miR-204-5p in LPS-induced hBMECs. Downregulation of circ_0057583 abated LPS-induced hBMEC injury by inducing cell proliferation and angiogenesis, as well as inhibiting cell apoptosis, autophagy and inflammation. Circ_0057583 aggravated LPS-evoked hBMEC injury by regulating miR-204-5p. Also, miR-204-5p suppressed LPS-evoked hBMEC damage via targeting NR4A1. Moreover, circ_0057583 sponged miR-204-5p to up-regulate NR4A1 level. Depletion of circ_0057583 alleviated LPS-triggered brain microvascular endothelial endothelial cell injury through modulating miR-204-5p/NR4A1 axis.
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Células Endoteliais , MicroRNAs , RNA Circular , Encéfalo/metabolismo , Células Endoteliais/metabolismo , Células Endoteliais/patologia , Humanos , MicroRNAs/metabolismo , Membro 1 do Grupo A da Subfamília 4 de Receptores Nucleares/metabolismo , RNA Circular/genética , Receptores Citoplasmáticos e Nucleares/metabolismo , Ubiquitina-Proteína Ligases/genéticaRESUMO
To overcome various factors that limit crop production and to meet the growing demand for food by the increasing world population. Seed priming technology has been proposed, and it is considered to be a promising strategy for agricultural sciences and food technology. This technology helps to curtail the germination time, increase the seed vigor, improve the seedling establishment, and enhance the stress tolerance, all of which are conducive to improving the crop yield. Meanwhile, it can be used to reduce seed infection for better physiological or phytosanitary quality. Compared to conventional methods, such as the use of water or chemical-based agents, X-rays, gamma rays, electron beams, proton beams, and heavy ion beams have emerged as promising physics strategies for seed priming as they are time-saving, more effective, environmentally friendly, and there is a greater certainty for yield improvement. Ionizing radiation (IR) has certain biological advantages over other seed priming methods since it generates charged ions while penetrating through the target organisms, and it has enough energy to cause biological effects. However, before the wide utilization of ionizing priming methods in agriculture, extensive research is needed to explore their effects on seed priming and to focus on the underlying mechanism of them. Overall, this review aims to highlight the current understanding of ionizing priming methods and their applicability for promoting agroecological resilience and meeting the challenges of food crises nowadays.
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Germinação , Sementes , Sementes/fisiologia , Plântula/fisiologia , Produção Agrícola/métodos , Radiação Ionizante , Estresse FisiológicoRESUMO
Genetic variations are an important source of germplasm diversity, as it provides an allele resource that contributes to the development of new traits for plant breeding. Gamma rays have been widely used as a physical agent for mutation creation in plants, and their mutagenic effect has attracted extensive attention. However, few studies are available on the comprehensive mutation profile at both the large-scale phenotype mutation screening and whole-genome mutation scanning. In this study, biological effects on M1 generation, large-scale phenotype screening in M2 generation, as well as whole-genome re-sequencing of seven M3 phenotype-visible lines were carried out to comprehensively evaluate the mutagenic effects of gamma rays on Arabidopsis thaliana. A total of 417 plants with visible mutated phenotypes were isolated from 20,502 M2 plants, and the phenotypic mutation frequency of gamma rays was 2.03% in Arabidopsis thaliana. On average, there were 21.57 single-base substitutions (SBSs) and 11.57 small insertions and deletions (InDels) in each line. Single-base InDels accounts for 66.7% of the small InDels. The genomic mutation frequency was 2.78 × 10-10/bp/Gy. The ratio of transition/transversion was 1.60, and 64.28% of the C > T events exhibited the pyrimidine dinucleotide sequence; 69.14% of the small InDels were located in the sequence with 1 to 4 bp terminal microhomology that was used for DNA end rejoining, while SBSs were less dependent on terminal microhomology. Nine genes, on average, were predicted to suffer from functional alteration in each re-sequenced line. This indicated that a suitable mutation gene density was an advantage of gamma rays when trying to improve elite materials for one certain or a few traits. These results will aid the full understanding of the mutagenic effects and mechanisms of gamma rays and provide a basis for suitable mutagen selection and parameter design, which can further facilitate the development of more controlled mutagenesis methods for plant mutation breeding.
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Arabidopsis/crescimento & desenvolvimento , Mutação , Sequenciamento Completo do Genoma/métodos , Arabidopsis/genética , Arabidopsis/efeitos da radiação , Raios gama/efeitos adversos , Genoma de Planta , Taxa de Mutação , Fenótipo , Melhoramento VegetalRESUMO
BACKGROUND: Dental caries is one of the most prevalent chronic diseases worldwide among children. The rs35874116 single nucleotide polymorphism (SNP) in the sweet receptor gene TAS1R2 has been associated with dental caries at a high risk in permanent teeth among school children and adults. To date, little is known about the association of this SNP with sweet intake and caries risk in the primary school children. METHODS: Total of 236 children were included, namely 118 subjects in the non-caries (NC) group and severe early childhood caries (S-ECC) group, respectively. Oral mucosa cells were collected from all the selected children, and the full length of exon 3 in TAS1R2 was sequenced to analyse rs35874116 polymorphism. A questionnaire was used to collect information about socio-demographic information, frequency of sweet intake and oral hygiene habits. Multiple logistic regression models were applied to assess the relationship of rs35874116 polymorphism with frequency of sweet intake and S-ECC among the five-year-old children. RESULTS: Children with the TT genotype of rs35874116 had a higher frequency of sweet intake than CT/CC carriers (51.3% vs. 32.7%; x2 = 5.436, p = 0.020), and S-ECC individuals were more likely to be TT genotype carriers than NC individuals (53.5% vs. 46.5%; x2 = 4.353, p = 0.037). Multiple logistic regression analyses showed that the TT genotype of rs35874116 was not only significantly related to the frequency of sweet intake (OR = 2.25, 95% CI = 1.14-4.44) but also significantly associated with S-ECC (OR = 2.11, 95% CI = 1.01 ~ 4.42). CONCLUSIONS: The rs35874116 polymorphism might increase sweet intake and the risk of S-ECC among five-year-old children in Nanning, China.
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Cárie Dentária , Criança , Pré-Escolar , Humanos , Estudos de Casos e Controles , China , Cárie Dentária/genética , Higiene Bucal , Polimorfismo de Nucleotídeo Único/genéticaRESUMO
Objectives: To explore the effect of glucocorticoids combined with disease modifying anti-rheumatic drugs in the treatment of symptoms in patients with rheumatoid arthritis. Methods: Medical records of patients with rheumatoid arthritis treated in the Rheumatology and Immunology Department of Yiwu Central Hospital from March 2020 to March 2021 were selected. A total of 38 patients were treated with disease modifying anti-rheumatic drugs Group-I and 44 patients were treated with disease modifying anti-rheumatic drugs and glucocorticoids Group-II. The symptom improvement of the two groups were compared and analyzed Serological indexes and adverse reactions. Results: Swollen joint counts (SJC), tender joint counts (TJC), rheumatoid arthritis disease activity evaluation form (DAS28) score, erythrocyte sedimentation rate, levels of ESR, C-reaction protein (CRP) and rheumatoid factor (RF) of Group-II patients were lower than those in Group-I (P<0.05). The adverse reaction rate in Group-II patients was 12.20%, which was similar to that of Group-I patients. There was no significant difference in 9.76% of the patients (P>0.05). Conclusion: The combination of glucocorticoids and disease modifying anti-rheumatic drugs in the treatment of patients with rheumatoid arthritis is safe can further improve their symptoms and serological indexes, and will not lead to increased adverse reactions.
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Kita-kyushu lung cancer antigen 1 (KK-LC-1) is a kind of cancer-testis antigen with anti-tumor potential for clinical application. As a class of small-molecule antigen conjugate, tumor-targeting peptides have broad application prospects in gastric cancer diagnosis, imaging, and biological treatment. Here, we screened specific cyclic nonapeptides from a phage-display library. The targeting peptide with the best affinity was selected and further verified in ex vivo tissue sections. Finally, enrichment of targeting peptides in tumor tissues was observed in vivo, and the dynamic biodistribution process was also observed with micro-positron emission tomography (micro-PET)/computed tomography (CT) imaging. Studies showed that the specific cyclic nonapeptide had a high binding capacity for KK-LC-1 protein. It has a strong affinity and specificity for KK-LC-1-expressing positive tumor cells. Targeting peptides were significantly enriched at tumor sites in vivo, with very low normal tissue background. These findings demonstrated that the KK-LC-1 targeting peptide has high clinical potential.
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Antígenos de Neoplasias/metabolismo , Bacteriófagos/química , Biblioteca de Peptídeos , Peptídeos Cíclicos/metabolismo , Neoplasias Gástricas/metabolismo , Animais , Bacteriófagos/genética , Linhagem Celular Tumoral , Epitopos/metabolismo , Humanos , Camundongos , Terapia de Alvo Molecular , Especificidade de Órgãos , Peptídeos Cíclicos/química , Peptídeos Cíclicos/isolamento & purificação , Análise de Sequência de DNA/métodos , Neoplasias Gástricas/terapia , Distribuição TecidualRESUMO
Various cancer vaccines have been developed to generate and amplify antigen-specific T cell responses against malignancy. Among them, in situ vaccination is one of the most practical types as it can trigger immune responses without previous antigen identification. Here we reported a novel in situ vaccine by intratumoral injection of imiquimod and OX40 agonist. In mice bearing hepatic carcinoma, both the injected tumor and the noninjected tumor in the distant lesion of the same mice were suppressed after vaccination. Further studies found that this in situ vaccine triggered systemic tumor-specific responses, with one-fold increase of effector memory T cells properties and stronger toxicity of lymphocytes in spleen. Besides, we found that imiquimod upregulated the expression of OX40 on CD4+ T cells and thus enhanced the effectiveness of OX40 agonist. Five immune-positive-related pathways were activated after vaccination. This in situ vaccine caused little harm to normal organs and provided long-term protection against the same syngeneic tumor rechallenge. Due to its effectiveness, feasibility and safety, this strategy could potentially be applied to various types of late-stage solid tumors and worthy of further clinical research.
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Antineoplásicos/uso terapêutico , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Vacinas Anticâncer/uso terapêutico , Imiquimode/uso terapêutico , Neoplasias Hepáticas/tratamento farmacológico , Receptores OX40/agonistas , Animais , Antineoplásicos/administração & dosagem , Antineoplásicos/efeitos adversos , Protocolos de Quimioterapia Combinada Antineoplásica/administração & dosagem , Linfócitos T CD4-Positivos/efeitos dos fármacos , Linfócitos T CD4-Positivos/metabolismo , Vacinas Anticâncer/administração & dosagem , Vacinas Anticâncer/efeitos adversos , Feminino , Imiquimode/administração & dosagem , Imiquimode/efeitos adversos , Memória Imunológica/efeitos dos fármacos , Imunoterapia , Injeções Intralesionais/métodos , Neoplasias Hepáticas/imunologia , Glicoproteínas de Membrana/metabolismo , Camundongos , Receptores OX40/metabolismo , Linfócitos T/efeitos dos fármacos , Receptor 7 Toll-Like/metabolismo , Microambiente Tumoral/efeitos dos fármacos , Microambiente Tumoral/imunologia , Vacinação/métodosRESUMO
BACKGROUND: Flower longevity is closely related to pollen dispersal and reproductive success in all plants, as well as the commercial value of ornamental plants. Mutants that display variation in flower longevity are useful tools for understanding the mechanisms underlying this trait. Heavy-ion beam irradiation has great potential to improve flower shapes and colors; however, few studies are available on the mutation of flower senescence in leguminous plants. RESULTS: A mutant (C416) exhibiting blossom duration eight times longer than that of the wild type (WT) was isolated in Lotus japonicus derived from carbon ion beam irradiation. Genetic assays supported that the delayed flower senescence of C416 was a dominant trait controlled by a single gene, which was located between 4,616,611 Mb and 5,331,876 Mb on chromosome III. By using a sorting strategy of multi-sample parallel genome sequencing, candidate genes were narrowed to the gene CUFF.40834, which exhibited high identity to ethylene receptor 1 in other model plants. A physiological assay demonstrated that C416 was insensitive to ethylene precursor. Furthermore, the dynamic changes of phytohormone regulatory network in petals at different developmental stages was compared by using RNA-seq. In brief, the ethylene, jasmonic acid (JA), and salicylic acid (SA) signaling pathways were negatively regulated in C416, whereas the brassinosteroid (BR) and cytokinin signaling pathways were positively regulated, and auxin exhibited dual effects on flower senescence in Lotus japonicus. The abscisic acid (ABA) signaling pathway is positively regulated in C416. CONCLUSION: So far, C416 might be the first reported mutant carrying a mutation in an endogenous ethylene-related gene in Lotus japonicus, rather than through the introduction of exogenous genes by transgenic techniques. A schematic of the flower senescence of Lotus japonicus from the perspective of the phytohormone regulatory network was provided based on transcriptome profiling of petals at different developmental stages. This study is informative for elucidating the molecular mechanism of delayed flower senescence in C416, and lays a foundation for candidate flower senescence gene identification in Lotus japonicus. It also provides another perspective for the improvement of flower longevity in legume plants by heavy-ion beam.
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Carbono/metabolismo , Lotus/metabolismo , Flores/genética , Flores/metabolismo , Regulação da Expressão Gênica de Plantas/fisiologia , Lotus/genética , Reguladores de Crescimento de Plantas/metabolismo , Plantas Geneticamente Modificadas/genética , Plantas Geneticamente Modificadas/metabolismo , Transcriptoma/genética , Sequenciamento Completo do Genoma/métodosRESUMO
BACKGROUND: Poorly cohesive (PC) is a unique histologic subtype of gastric cancer (GC), with an increasing incidence in recent years. However, the molecular characteristics and therapeutic targets of PC GC are not yet well studied and there are no effective therapies for these patients. METHODS: Formalin fixed paraffin embedded (FFPE) samples of 556 GC patients, including 64 PC GC, were collected for next-generation sequencing (NGS). Clinical characteristics and genomic profiling were analyzed. FGFR2 expression was detected by quantitative real time polymerase chain reaction (qRT-PCR) and immunohistochemistry (IHC). FGFR2 inhibitors response was studied in vitro. RESULTS: Among 556 GC patients, PC GC patients were younger (P = 0.004), had lower tumor mutation burden (TMB-L) (P = 0.001) than non-PC GC. The top 10 most frequently mutated genes in PC GC were TP53 (48%), CDH1 (31%), ARID1A (14%), FGFR2 (14%), ERBB2 (9%), CDKN2A (9%), FGF3 (8%), LRP1B (9%), FGF19 (8%) and FGF4 (8%). Noticeably, FGFR2 is more frequently mutated than non-PC GC (14% vs. 6%, P = 0.037), including copy number variants (CNVs, 12.5%) and gene rearrangements (3.1%, FGFR2/VTI1A and FGFR2/TACC2). Former studies have confirmed that gain of copy number could increase FGFR2 expression and sensitivity to FGFR2 inhibitors in GC. However, no research has verified the function of FGFR2 rearrangements in GC. Our results showed that cell lines of GC transfected with TACC2-FGFR2 fusion had increased mRNA and protein expression of FGFR2, and were more sensitive to FGFR2 inhibitors. FGFR2 inhibitors might be a new therapeutic target for PC GC. In addition, we found patients of PC GC harboring gene rearrangements (n = 9) had poorer overall survival (OS) in comparison with patients without any gene rearrangement (n = 19) (16.0 months vs 21.0 months, P = 0.043). Gene rearrangement might be an adverse prognostic factor for PC GC patients. CONCLUSIONS: FGFR2 alterations were recurrent in PC GC and FGFR2 inhibitors might be a new therapeutic target for PC GC.
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Adenocarcinoma , Neoplasias Gástricas , Adenocarcinoma/genética , Biomarcadores Tumorais , Proteínas de Transporte , Genes Supressores de Tumor , Sequenciamento de Nucleotídeos em Larga Escala , Humanos , Receptor Tipo 2 de Fator de Crescimento de Fibroblastos/genética , Neoplasias Gástricas/tratamento farmacológico , Neoplasias Gástricas/genética , Proteínas Supressoras de TumorRESUMO
Bone modelling evaluation is important for monitoring idiopathic condylar resorption (ICR) progress. To compare condylar modelling in ICR patients treated with or without stabilisation splints (SSs). Eighty-four condyles from 84 ICR patients were studied: 42 received SS therapy (SS group); 42 received conventional therapy (control group). Cone-beam computed tomography images at diagnosis (T0) and after at least 6 months (T1) were used for three-dimensional reconstruction. Volume differences between T0 and T1 (δV) were used to evaluate the amount of modelling. Percentage of growth area (PCT) was used to assess the condylar surface growth tendency. No significant change in condylar volume was found in the SS group, whereas that in the control group was significantly decreased at T1 (P <.0001). The amount of modelling differed among condylar subregions within the SS group: among 6 subregions (P =.0137), between anterior and posterior regions (P =.0336) and between lateral, intermediate and medial regions (P =.0275). Control group condylar subregions showed no significant differences in the amount of modelling. The anabolic modelling tendency of the total condylar surface in the SS group was greater than that in the control group (P =.0251); however, there were no statistical differences in PCTs among condylar subregions in either group. SS therapy effectively reduced further bone destruction and promoted condylar modelling. Three-dimensional morphological analysis is a novel method that can accurately evaluate the amount of bone modelling and growth tendency in ICR patients.
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Côndilo Mandibular , Contenções , Tomografia Computadorizada de Feixe Cônico , Humanos , Imageamento Tridimensional , Côndilo Mandibular/diagnóstico por imagem , Articulação TemporomandibularRESUMO
Objective: This study examined the alliance-outcome relation and the possible moderation effect of receiving progress feedback on a sample of Chinese clients. Method: One hundred and fifty-nine clients recruited from a university counseling center in central China filled out the Session Rating Scale (SRS) and the Outcome Rating Scale (ORS) each session. Participants were randomly assigned to either the progress feedback group or non-feedback group. Therapists working with clients in the feedback group received their clients' SRS and ORS scores weekly and were asked to plot their scores in a chart. The alliance-outcome and moderator effects were tested with disaggregated cross-lagged panel modeling of SRS and ORS. Results: The findings indicated a strong reciprocal relation between SRS and ORS, but the moderator effect due to feedback was not supported. Conclusion: Results affirm the cross-cultural stability of the session-by-session reciprocal effects of the alliance-outcome model in a Chinese sample. The issue of whether feedback moderates the within-person alliance-outcome relationship needs to be studied further.
Assuntos
Análise de Dados , Psicoterapia , China , Retroalimentação , Humanos , Relações Profissional-Paciente , Resultado do TratamentoRESUMO
OBJECTIVE: To investigate the effect of a new powered toothbrush with tapered bristles on the brush head for the reduction of dental plaque and gingivitis. METHODS: This was a single-centre, single-group, longitudinal clinical trial. Thirty-two participants who were typical manual toothbrush users were recruited and assigned the sonic-powered brush. Interviews were arranged on the 1st , 4th , and 15th days which represented the baseline (T1 ), middle (T2 ) and final (T3 ) time points, respectively. At each visit, the plaque index (PlI), gingival index (GI), bleeding on probing (BOP) and probing depth (PD) were recorded for the Ramfjord index teeth, gingival crevicular fluid(GCF) samples were collected and the proportions of eight periodontal pathogenic bacteria were analysed. Repeated-measures analysis of variance (ANOVA) was used for comparisons at different time points. RESULTS: PlI was significantly reduced by 41.67% from T1 to T2 (p<0.001) and decreased by 18.57% from T2 to T3 (p=0.003). GI also varied significantly from T1 to T2 (p=0.018) and T1 to T3 (p=0.037). A 35.86% reduction in the BOP percentage occurred after using the sonic-powered toothbrush for 3 days (p=0.001). However, no significant difference was observed in the mean values of PD at different examination intervals (p=0.529). There was no significant difference in the proportions of bacteria between T1 and T3 (p>0.05). CONCLUSION: This research demonstrated the efficacy of the sonic-powered brush handle together with tapered bristles on the brush in reducing plaque and gingivitis within a short time period.
Assuntos
Placa Dentária , Gengivite , Placa Dentária/prevenção & controle , Índice de Placa Dentária , Desenho de Equipamento , Gengivite/prevenção & controle , Humanos , Índice Periodontal , Método Simples-Cego , Escovação DentáriaRESUMO
In the past decade, substantial evidence established that long noncoding RNAs are serious about mediating the evolution of malignancies. In previous studies, LINC00365, which has not been reported in colorectal cancer (CRC), was selected using the bioinformatics analysis in GSE109454 and GSE41655 data sets. However, the function and mechanism of LINC00365 are still obscure. In our study, LINC00365 was found upregulated in CRC specimens and intimately connected with the prognosis of patients with CRC. In addition, LINC00365 overexpression enhances the cell abilities of proliferation, migration, and invasion in vitro. Meanwhile, mechanistic studies showed that LINC00365 might involve in CRC cell progression by mediating the Wnt/ß-catenin pathway. Furthermore, LINC00365 upregulation increased CDK1 protein expression. In conclusion, this study suggests that LINC00365 acts as a vital part in facilitating CRC progression and might play as a therapeutic target for patients with CRC.