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1.
Curr Med Sci ; 44(2): 369-379, 2024 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-38619683

RESUMO

OBJECTIVE: Matrix metalloproteinase 13 (MMP13) is an extracellular matrix protease that affects the progression of atherosclerotic plaques and arterial thrombi by degrading collagens, modifying protein structures and regulating inflammatory responses, but its role in deep vein thrombosis (DVT) has not been determined. The purpose of this study was to investigate the potential effects of MMP13 and MMP13-related genes on the formation of DVT. METHODS: We altered the expression level of MMP13 in vivo and conducted a transcriptome study to examine the expression and relationship between MMP13 and MMP13-related genes in a mouse model of DVT. After screening genes possibly related to MMP13 in DVT mice, the expression levels of candidate genes in human umbilical vein endothelial cells (HUVECs) and the venous wall were evaluated. The effect of MMP13 on platelet aggregation in HUVECs was investigated in vitro. RESULTS: Among the differentially expressed genes, interleukin 1 beta, podoplanin (Pdpn), and factor VIII von Willebrand factor (F8VWF) were selected for analysis in mice. When MMP13 was inhibited, the expression level of PDPN decreased significantly in vitro. In HUVECs, overexpression of MMP13 led to an increase in the expression level of PDPN and induced platelet aggregation, while transfection of PDPN-siRNA weakened the ability of MMP13 to increase platelet aggregation. CONCLUSIONS: Inhibiting the expression of MMP13 could reduce the burden of DVT in mice. The mechanism involves downregulating the expression of Pdpn through MMP13, which could provide a novel gene target for DVT diagnosis and treatment.


Assuntos
Trombose Venosa , Camundongos , Humanos , Animais , Trombose Venosa/genética , Metaloproteinase 13 da Matriz/genética , Modelos Animais de Doenças , Agregação Plaquetária , Células Endoteliais da Veia Umbilical Humana/metabolismo
2.
Nat Neurosci ; 2024 Apr 08.
Artigo em Inglês | MEDLINE | ID: mdl-38589584

RESUMO

Learning and memory require activity-induced changes in dendritic translation, but which mRNAs are involved and how they are regulated are unclear. In this study, to monitor how depolarization impacts local dendritic biology, we employed a dendritically targeted proximity labeling approach followed by crosslinking immunoprecipitation, ribosome profiling and mass spectrometry. Depolarization of primary cortical neurons with KCl or the glutamate agonist DHPG caused rapid reprogramming of dendritic protein expression, where changes in dendritic mRNAs and proteins are weakly correlated. For a subset of pre-localized messages, depolarization increased the translation of upstream open reading frames (uORFs) and their downstream coding sequences, enabling localized production of proteins involved in long-term potentiation, cell signaling and energy metabolism. This activity-dependent translation was accompanied by the phosphorylation and recruitment of the non-canonical translation initiation factor eIF4G2, and the translated uORFs were sufficient to confer depolarization-induced, eIF4G2-dependent translational control. These studies uncovered an unanticipated mechanism by which activity-dependent uORF translational control by eIF4G2 couples activity to local dendritic remodeling.

3.
Nat Commun ; 15(1): 3422, 2024 Apr 23.
Artigo em Inglês | MEDLINE | ID: mdl-38653965

RESUMO

Targeting Anaplastic lymphoma kinase (ALK) is a promising therapeutic strategy for aberrant ALK-expressing malignancies including neuroblastoma, but resistance to ALK tyrosine kinase inhibitors (ALK TKI) is a distinct possibility necessitating drug combination therapeutic approaches. Using high-throughput, genome-wide CRISPR-Cas9 knockout screens, we identify miR-1304-5p loss as a desensitizer to ALK TKIs in aberrant ALK-expressing neuroblastoma; inhibition of miR-1304-5p decreases, while mimics of this miRNA increase the sensitivity of neuroblastoma cells to ALK TKIs. We show that miR-1304-5p targets NRAS, decreasing cell viability via induction of apoptosis. It follows that the farnesyltransferase inhibitor (FTI) lonafarnib in addition to ALK TKIs act synergistically in neuroblastoma, inducing apoptosis in vitro. In particular, on combined treatment of neuroblastoma patient derived xenografts with an FTI and an ALK TKI complete regression of tumour growth is observed although tumours rapidly regrow on cessation of therapy. Overall, our data suggests that combined use of ALK TKIs and FTIs, constitutes a therapeutic approach to treat high risk neuroblastoma although prolonged therapy is likely required to prevent relapse.


Assuntos
Quinase do Linfoma Anaplásico , Dibenzocicloeptenos , Farnesiltranstransferase , GTP Fosfo-Hidrolases , MicroRNAs , Neuroblastoma , Piperidinas , Inibidores de Proteínas Quinases , Piridinas , Ensaios Antitumorais Modelo de Xenoenxerto , Neuroblastoma/tratamento farmacológico , Neuroblastoma/genética , Neuroblastoma/patologia , Neuroblastoma/metabolismo , Quinase do Linfoma Anaplásico/genética , Quinase do Linfoma Anaplásico/metabolismo , Quinase do Linfoma Anaplásico/antagonistas & inibidores , Humanos , Animais , Farnesiltranstransferase/antagonistas & inibidores , Farnesiltranstransferase/metabolismo , Linhagem Celular Tumoral , Inibidores de Proteínas Quinases/farmacologia , Inibidores de Proteínas Quinases/uso terapêutico , MicroRNAs/genética , MicroRNAs/metabolismo , GTP Fosfo-Hidrolases/genética , GTP Fosfo-Hidrolases/metabolismo , Piridinas/farmacologia , Piridinas/uso terapêutico , Piperidinas/farmacologia , Piperidinas/uso terapêutico , Camundongos , Proteínas de Membrana/metabolismo , Proteínas de Membrana/genética , Apoptose/efeitos dos fármacos , Apoptose/genética , Resistencia a Medicamentos Antineoplásicos/genética , Resistencia a Medicamentos Antineoplásicos/efeitos dos fármacos , Mutação , Regulação Neoplásica da Expressão Gênica/efeitos dos fármacos , Feminino , Sinergismo Farmacológico
4.
Rev Sci Instrum ; 95(3)2024 Mar 01.
Artigo em Inglês | MEDLINE | ID: mdl-38466030

RESUMO

Heat capacity is a fundamental thermodynamic property of a substance. Although heat capacity values and related thermodynamic functions are available for many materials, low-temperature heat capacity measurements, especially for novel materials, can still provide valuable insights for research in physics, chemistry, thermodynamics, and other fields. Reliable low-temperature heat capacity data are typically measured using classical adiabatic calorimeters, which use liquid helium as the refrigerant to provide a cryogenic environment for heat capacity measurements. However, liquid helium is not only expensive but also not easy to obtain, which greatly limits the application of adiabatic calorimetry. In this work, an accurate adiabatic calorimeter equipped with a Gifford-MacMahon refrigerator was designed and constructed for measuring the heat capacity of condensed matter in the temperature range from 4 to 100 K. The Gifford-MacMahon refrigerator was utilized to provide a stable liquid helium-free cryogenic environment. A simple mechanical thermal switch assembly was designed to facilitate switching between the refrigeration mode and the adiabatic measurement mode of the calorimeter. Based on the measurement results of standard reference materials, the optimized repeatability and accuracy of heat capacity measurements were determined to be within 0.8% and 1.5%, respectively. The heat capacity of α-Fe2O3 nanoparticles was also investigated with this device. Furthermore, this adiabatic calorimeter only requires electricity to operate in the liquid helium temperature range, which may significantly advance the research on low-temperature heat capacity based on adiabatic calorimetry.

5.
Clin Cosmet Investig Dermatol ; 17: 553-563, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38476342

RESUMO

Background: Home beauty devices for facial rejuvenation utilizing technologies such as radiofrequency, microcurrent, and light emitting diode have gained widespread attention due to their claimed ability to improve skin tightness and elasticity, making them popular among consumers. However, there is controversy within the industry regarding the effectiveness and safety of these devices. Objective: This study aims to verify the safety and effectiveness of these home beauty devices in treating skin aging based on relevant efficacy evaluation indicators. Methods: A systematic search of PubMed and web of science was conducted to include original research literature on the efficacy of home beauty devices for facial rejuvenation over the past two decades. The selected literature was processed and analyzed based on efficacy evaluation indicators such as sample size, follow-up period, experimental results, adverse reactions, and others. Results: After screening, a total of 18 clinical studies were included. A comprehensive analysis of the experimental results and adverse reaction indicators from existing literature revealed that home beauty devices for facial rejuvenation can improve skin aging to a certain extent. Apart from transient redness and swelling, no other adverse reactions were observed. Conclusion: Despite the variety of home beauty devices for facial rejuvenation available in the market, corresponding research reports are limited. Existing studies suffer from issues such as small sample sizes and short follow-up periods, highlighting the need for a more comprehensive efficacy evaluation system. Furthermore, the physical stimulation of meridian acupoints by home beauty devices for facial rejuvenation may meet the multi-dimensional anti-aging needs of patients, suggesting a potential direction for future research.

6.
Alzheimers Dement ; 20(3): 2165-2172, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38276892

RESUMO

INTRODUCTION: Machine learning (ML) can optimize amyloid (Aß) comparability among positron emission tomography (PET) radiotracers. Using multi-regional florbetapir (FBP) measures and ML, we report better Pittsburgh compound-B (PiB)/FBP harmonization of mean-cortical Aß (mcAß) than Centiloid. METHODS: PiB-FBP pairs from 92 subjects in www.oasis-brains.org and 46 in www.gaain.org/centiloid-project were used as the training/testing sets. FreeSurfer-extracted FBP multi-regional Aß and actual PiB mcAß in the training set were used to train ML models generating synthetic PiB mcAß. The correlation coefficient (R) between the synthetic/actual PiB mcAß in the testing set was assessed. RESULTS: In the testing set, the synthetic/actual PiB mcAß correlation R = 0.985 (R2  = 0.970) using artificial neural network was significantly higher (p ≤ 6.6e-4) than the FBP/PiB correlation R = 0.927 (R2  = 0.860), improving total variance percentage (R2 ) from 86% to 97%. Other ML models such as partial least square, ensemble, and relevance vector regressions also improved R (p = 9.677e-05 /0.045/0.0017). DISCUSSION: ML improved mcAß comparability. Additional studies are needed for the generalizability to other amyloid tracers, and to tau PET. Highlights Centiloid is a calibration of the amyloid scale, not harmonization. Centiloid unifies the amyloid scale without improving inter-tracer association (R2 ). Machine learning (ML) can harmonize the amyloid scale by improving R2 . ML harmonization maps multi-regional florbetapir SUVRs to PiB mean-cortical SUVR. Artificial neural network ML increases Centiloid R2 from 86% to 97%.


Assuntos
Doença de Alzheimer , Tomografia por Emissão de Pósitrons , Humanos , Tomografia por Emissão de Pósitrons/métodos , Compostos de Anilina , Etilenoglicóis , Encéfalo/diagnóstico por imagem , Encéfalo/metabolismo , Amiloide/metabolismo , Proteínas Amiloidogênicas , Placa Amiloide , Peptídeos beta-Amiloides/metabolismo , Doença de Alzheimer/diagnóstico por imagem
8.
Neuron ; 112(6): 924-941.e10, 2024 Mar 20.
Artigo em Inglês | MEDLINE | ID: mdl-38237588

RESUMO

The properties of the cell types that are selectively vulnerable in Huntington's disease (HD) cortex, the nature of somatic CAG expansions of mHTT in these cells, and their importance in CNS circuitry have not been delineated. Here, we employed serial fluorescence-activated nuclear sorting (sFANS), deep molecular profiling, and single-nucleus RNA sequencing (snRNA-seq) of motor-cortex samples from thirteen predominantly early stage, clinically diagnosed HD donors and selected samples from cingulate, visual, insular, and prefrontal cortices to demonstrate loss of layer 5a pyramidal neurons in HD. Extensive mHTT CAG expansions occur in vulnerable layer 5a pyramidal cells, and in Betz cells, layers 6a and 6b neurons that are resilient in HD. Retrograde tracing experiments in macaque brains identify layer 5a neurons as corticostriatal pyramidal cells. We propose that enhanced somatic mHTT CAG expansion and altered synaptic function act together to cause corticostriatal disconnection and selective neuronal vulnerability in HD cerebral cortex.


Assuntos
Doença de Huntington , Animais , Doença de Huntington/metabolismo , Neurônios/metabolismo , Células Piramidais/metabolismo , Córtex Cerebral/metabolismo , Núcleo Solitário/metabolismo , Modelos Animais de Doenças , Proteína Huntingtina/genética , Proteína Huntingtina/metabolismo
9.
Medicine (Baltimore) ; 103(4): e36948, 2024 Jan 26.
Artigo em Inglês | MEDLINE | ID: mdl-38277531

RESUMO

BACKGROUND: With the advancement of diagnostic technology, true acute undifferentiated leukemia (AUL) is becoming more rare, and AUL with extramedullary sarcoma has not been reported. CASE PRESENTATION: This article reports a case of AUL with extramedullary sarcoma. Flow cytometric analysis of the bone marrow and lymph nodes indicated that the tumor cells of both were of the same origin and mainly expressed stem cell markers and CD7, no myeloid-specific markers, T-lymphoblastic-related markers, and B-lymphoblastic-related markers. Although the priming regimen combined with azacitidine was ineffective, complete remission was achieved by switching to azacitidine combined with HIA (homoharringtonine, idarubicin plus Ara-C). CONCLUSION: To diagnosis de novo acute leukemia with extensive and comprehensive cellular immune maker detection is available and credible, the expression of a single relatively nonspecific myeloid antigen as a immune maker to detect AUL or AUL associated with sarcoma is precise and effective in our case, which patient was benefit from HIA regiment.


Assuntos
Leucemia Mieloide Aguda , Leucemia , Sarcoma Mieloide , Humanos , Sarcoma Mieloide/diagnóstico , Sarcoma Mieloide/tratamento farmacológico , Leucemia Mieloide Aguda/diagnóstico , Leucemia Mieloide Aguda/tratamento farmacológico , Leucemia Mieloide Aguda/patologia , Leucemia/diagnóstico , Medula Óssea/patologia , Doença Aguda , Azacitidina
10.
Plant Physiol ; 194(2): 758-773, 2024 Jan 31.
Artigo em Inglês | MEDLINE | ID: mdl-37847103

RESUMO

Touch induces marked morphological changes in plants, including reduced rosette diameters and delayed flowering, a process called thigmomorphogenesis. Previous studies have revealed that thigmomorphogenesis in Arabidopsis (Arabidopsis thaliana) results from touch-induced accumulation of jasmonic acid (JA) and GIBBERELLIN 2-OXIDASE7 (GA2ox7) transcripts, which encode a gibberellin (GA) catabolism enzyme, leading to reduced levels of active GAs. However, the mechanisms underlying thigmomorphogenesis remain uncharacterized. Here, we showed that touch induces ethylene (ET) production in Arabidopsis. After touch treatment, ET biosynthesis and signaling mutants exhibited even greater thigmomorphogenic changes and more decreased GA4 contents than did wild-type (WT) plants. Biochemical analysis indicated that the transcription factor ETHYLENE INSENSITIVE3 (EIN3) of the ET pathway binds to the promoter of GA2ox8 (encoding another GA 2-oxidase performing the same GA modification as GA2ox7) and represses GA2ox8 transcription. Moreover, MYC2, the master regulator of JA signaling, directly promoted GA2ox7 expression by binding the G-box motif on GA2ox7 promoter. Further genetic analysis suggested that the ET and JA pathways independently control the expression of GA2ox8 and GA2ox7, respectively. This study reveals that the ET pathway is a novel repressor of touch-induced thigmomorphogenesis and highlights that the ET and JA pathways converge on GA catabolism but play opposite roles to fine-tune GA4 content during thigmomorphogenesis.


Assuntos
Proteínas de Arabidopsis , Arabidopsis , Arabidopsis/genética , Arabidopsis/metabolismo , Proteínas de Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Giberelinas/metabolismo , Plantas Geneticamente Modificadas/metabolismo , Ciclopentanos/metabolismo , Oxilipinas/metabolismo , Etilenos/metabolismo , Regulação da Expressão Gênica de Plantas
11.
Soft Robot ; 11(1): 140-156, 2024 Feb.
Artigo em Inglês | MEDLINE | ID: mdl-37646782

RESUMO

The performance of the human finger is a significant inspiration for designing soft robotic fingers that can achieve high speed and high force or perform delicate and complex tasks. Existing soft grippers and actuators can be excellent in specific capabilities. However, it is still challenging for them to meet an all-around performance as the human finger, characterized by high actuation speed, wide grasping range, sensing ability, and gentle and high-load grasping capability. The proposed tendon pulley quadrastable (TPQ) finger has combined these qualities in the conducted gripping tasks. A pair of elastic tendons is utilized as the sole energy reservoir to create a novel energy distribution pattern: energy-coupled quadrastability. An energy model is built to analyze and predict the behaviors of the TPQ finger. Mechanical instability is utilized to enhance the actuation speed. The proposed soft lever mechanism endows the TPQ finger with sensing ability. The energy barrier adjusting plates control the energy barrier, adjusting the sensitivity of both active and passive actuation mechanisms. The transition of four stable states forms preplanned trajectories that are applied to create multiple grasping manners. Experiments show that it can respond to stimuli and finish a grasping task in merely 31 ms, and its payload can reach 33.25 kg. At the same time, it can also handle fragile objects such as a piece of rose and grasp a wide range of objects ranging from a thin nut (3.3 mm in height) or a thin card (0.76 mm thick) to a football (220 mm).

12.
Appl Biochem Biotechnol ; 196(3): 1623-1635, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-37436544

RESUMO

Adeno-associated virus (AAV) has been widely used to treat various human diseases as an important delivery vector for gene therapy due to its low immunogenicity and safety. AAV capsids proteins are comprised of three capsid viral proteins (VP; VP1, VP2, VP3). The capsid proteins play a key role in viral vector infectivity and transduction efficiency. To ensure the safety and efficacy of AAV gene therapy products, the quality of AAV vector capsid proteins during development and production should be carefully monitored and controlled. Microflow liquid chromatography coupled with mass spectrometry provides superior sensitivity and fast analysis capability. It showed significant advantages in the analysis of low- concentration and large numbers of AAV samples. The intact mass of capsid protein can be accurately determined using high-resolution mass spectrometry (MS). And MS also provides highly confident confirmation of sequence coverage and post-translational modifications site identification and quantitation. In this study, we used microflow liquid chromatography-tandem mass spectrometry (LC-MS/MS) for the characterization of AAV2 capsid protein. we obtained nearly 100% sequence coverage of low-concentration AAV2 capsid protein (8 × 1011 GC/mL). More than 30 post-translational modifications (PTMs) sites were identified, the PTMs types included deamidation, oxidation and acetylation. From this study, the proposed microflow LC-MS/MS method provides a sensitive and high throughput approach in the characterization of AAVs and other biological products with low abundance.


Assuntos
Proteínas do Capsídeo , Dependovirus , Humanos , Proteínas do Capsídeo/genética , Proteínas do Capsídeo/metabolismo , Dependovirus/genética , Dependovirus/metabolismo , Cromatografia Líquida , Espectrometria de Massas em Tandem , Capsídeo/metabolismo , Vetores Genéticos
13.
Alzheimers Dement ; 20(3): 1827-1838, 2024 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-38134231

RESUMO

INTRODUCTION: Tau is a key pathology in chronic traumatic encephalopathy (CTE). Here, we report our findings in tau positron emission tomography (PET) measurements from the DIAGNOSE CTE Research Project. METHOD: We compare flortaucipir PET measures from 104 former professional players (PRO), 58 former college football players (COL), and 56 same-age men without exposure to repetitive head impacts (RHI) or traumatic brain injury (unexposed [UE]); characterize their associations with RHI exposure; and compare players who did or did not meet diagnostic criteria for traumatic encephalopathy syndrome (TES). RESULTS: Significantly elevated flortaucipir uptake was observed in former football players (PRO+COL) in prespecified regions (p < 0.05). Association between regional flortaucipir uptake and estimated cumulative head impact exposure was only observed in the superior frontal region in former players over 60 years old. Flortaucipir PET was not able to differentiate TES groups. DISCUSSION: Additional studies are needed to further understand tau pathology in CTE and other individuals with a history of RHI.


Assuntos
Lesões Encefálicas Traumáticas , Carbolinas , Encefalopatia Traumática Crônica , Futebol Americano , Masculino , Humanos , Pessoa de Meia-Idade , Encefalopatia Traumática Crônica/diagnóstico por imagem , Encefalopatia Traumática Crônica/patologia , Futebol Americano/lesões , Proteínas tau , Tomografia por Emissão de Pósitrons , Lesões Encefálicas Traumáticas/complicações
14.
Curr Biol ; 33(24): 5456-5466.e5, 2023 12 18.
Artigo em Inglês | MEDLINE | ID: mdl-38070504

RESUMO

Insects and mammals have independently evolved odorant receptor genes that are arranged in large genomic tandem arrays. In mammals, each olfactory sensory neuron chooses to express a single receptor in a stochastic process that includes substantial chromatin rearrangements. Here, we show that ants, which have the largest odorant receptor repertoires among insects, employ a different mechanism to regulate gene expression from tandem arrays. Using single-nucleus RNA sequencing, we found that ant olfactory sensory neurons choose different transcription start sites along an array but then produce mRNA from many downstream genes. This can result in transcripts from dozens of receptors being present in a single nucleus. Such rampant receptor co-expression at first seems difficult to reconcile with the narrow tuning of the ant olfactory system. However, RNA fluorescence in situ hybridization showed that only mRNA from the most upstream transcribed odorant receptor seems to reach the cytoplasm where it can be translated into protein, whereas mRNA from downstream receptors gets sequestered in the nucleus. This implies that, despite the extensive co-expression of odorant receptor genes, each olfactory sensory neuron ultimately only produces one or very few functional receptors. Evolution has thus found different molecular solutions in insects and mammals to the convergent challenge of selecting small subsets of receptors from large odorant receptor repertoires.


Assuntos
Formigas , Neurônios Receptores Olfatórios , Receptores Odorantes , Animais , Receptores Odorantes/metabolismo , Formigas/genética , Formigas/metabolismo , Hibridização in Situ Fluorescente , Neurônios Receptores Olfatórios/fisiologia , Mamíferos/genética , RNA Mensageiro/genética , RNA Mensageiro/metabolismo
15.
Pharmgenomics Pers Med ; 16: 1109-1126, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-38149287

RESUMO

Background: Bicaudal-D (BICD) Family Like Cargo Adaptor 1 (BICDL1) is an essential component of the molecular mechanism during neuronal development. However, BICDL1 has not been reported in cancer. Using bioinformatics analysis, we systematically evaluated the potential role of BICDL1 in CRC. Methods: Colorectal cancer (CRC) and normal tissue samples were retrieved from the Gene Expression Omnibus (GEO), Genotype-Tissue Expression (GTEx), and Cancer Genome Atlas (TCGA) databases. Kaplan-Meier (K-M) analysis, nomogram, COX analysis, and receiver operating characteristic (ROC) curves were used to evaluate the prognostic power. Correlation analysis was also conducted to explore the correlation between mRNA expression and the methylation level of BICDL1 using cBioPortal, and the correlation between immune infiltration and BICDL1. RT-qPCR and Western blot assays were performed to analyze BICDL1 expression level between human colorectal cancer cell lines and normal colonic epithelial cells. Results: BICDL1 had a higher expression in CRC tissues than in normal tissues (p < 0.001) in TCGA and GES 74602 datasets. Kaplan-Meier survival analysis revealed that patients with high BICDL1 expression had lower overall survival (OS) (1.53, 95% confidence interval: 1.07-2.17, p=0.019). The ROC curves demonstrated that BICDL1 has high specificity and efficiency in diagnosis (AUC=0.919, CI: 0.895-0.943). The expression level of BICDL1 was significantly correlated with the infiltrating levels of Treg (R=0.146, p <0.001), TFH (R=0.080, p=0.043), NK CD56bright cells (R=0.149, p <0.001), aDC (R=0.095, p=0.016), and T helper cell infiltration (R=-0.084, p=0.034). The correlation between BICDL1 expression and methylation levels was negative (R2=0.134, p <0.001), and CRC patients had lower methylation levels than normal people (p=0.036). BICDL1 mRNA and its protein expression levels in CRC cell lines (SW620) was markedly increased compared with that of normal colonic epithelial cells (NCM460) (p < 0.001). Conclusion: BICDL1 may be a potential biomarker for evaluating immune infiltration levels and prognosis of CRC.

16.
Ultrason Sonochem ; 101: 106692, 2023 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-37988955

RESUMO

The effects of hydrodynamic cavitation (HC) and ultrasound cavitation (UC) on the lipoxygenase activity and physicochemical properties of soy milk were evaluated. The results revealed that both ultrasound cavitation and hydrodynamic cavitation significantly inactivated the lipoxygenase activity. After the exposure to ultrasound cavitation at 522.5 W/L and 70 °C for 12 min, the lipoxygenase activity was inactivated by 96.47 %. Meanwhile, HC treatment with the cavitation number of 0.0133 for 240 min led to the loss of 79.31 % of lipoxygenase activity. An artificial neural network was used to model and visualize the effects of different parameters after ultrasound cavitation treatment on the inactivation efficiency of soy milk. Turbiscan test results showed that hydrodynamic and ultrasound cavitation decreased the instability index and particle size of soy milk. Moreover, the total free amino acid content was significantly increased after hydrodynamic and ultrasound cavitation treatment. Gas chromatography-mass spectrometry showed that the total content of beany flavor compounds decreased after acoustic cavitation and HC treatment. Acoustic cavitation and HC affected the tertiary and secondary structure of soy milk, which was related to the inactivation of lipoxygenase. We aim to explore a potential and effective way of the application in soy milk processing by comparing the ultrasound equipped with heat treatment and hydrodymic cavitation.


Assuntos
Leite de Soja , Leite de Soja/química , Hidrodinâmica , Lipoxigenase/metabolismo , Fenômenos Químicos , Tamanho da Partícula
17.
Eur Geriatr Med ; 2023 Nov 30.
Artigo em Inglês | MEDLINE | ID: mdl-38032478

RESUMO

PURPOSE: Older adults with cardiovascular diseases (CVD) are prone to falls. This study aimed to analyze the combined effect of falling difficulty and CVD on the risk of all-cause- and CVD mortality in older adults. METHODS: In this retrospective cohort study, people aged ≥60 years with information on falling difficulty and CVD from the 1999-2004 National Health and Nutrition Examination Survey (NHANES) were selected. Multivariable Cox proportional hazards regression model was used to assess the associations of falling difficulty and CVD with all-cause- and CVD mortality. RESULTS: A total of 1409 participants were included, of whom 868 (58.1%) participants died, and 237 (15.0%) died of CVD. The mean age of participants was 72.1 (0.3) years and 825 (64.7%) were female. Older adults with falling difficulty or CVD were associated with an increased risk of all-cause- and CVD mortality. Older adults in the no falling difficulty & CVD group [hazard ratio (HR) = 1.45, 95% confidence interval (CI) 1.19-1.78], the falling difficulty & no CVD group (HR = 1.45, 95%CI 1.12-1.89), and the falling difficulty & CVD group (HR = 2.13, 95%CI 1.77-2.56) were related to a higher risk of all-cause mortality compared to those in the no falling difficulty & no CVD group. The combined effect of falling difficulty and CVD was positively correlated with the risk of all-cause mortality (HR = 1.26, 95%CI: 1.18-1.34; P-trend <0.001) and CVD mortality (HR = 1.36, 95%CI: 1.18-1.56; P-trend <0.001). CONCLUSION: The combined effect of falling difficulty and CVD was positively associated with the risk of all-cause- and CVD mortality in older adults.

18.
Med Oncol ; 40(12): 350, 2023 Nov 08.
Artigo em Inglês | MEDLINE | ID: mdl-37935950

RESUMO

CRC is a common malignant tumor in the gastrointestinal tract, and its incidence has increased significantly in recent years. Several studies revealed that lipid metabolism reprogramming contributed to tumorigenicity and malignancy by interfering with energy production, membrane formation, and signal transduction in cancers. ATGL is a kind of hydroxy fatty acid ester of fatty acid synthase, and its role in tumor remains controversial. We compared levels of adipose triglyceride lipase (ATGL) in human CRC specimens to adjacent specimens. To validate the effect of ATGL on the proliferation ability of CRC, CCK8 assay and clone formation assay were performed. To evaluate whether autophagy process takes part in the effect of ATGL on CRC proliferation, the value of LC3-II/LC3-I was detected by western blot and we blocked the SIRT1 to detect value of LC3-II/LC3-I and p62 via western blot. In the end, we detected the value of SIRT1 in CRC specimens. We found that ATGL showed high expression in CRC and positively correlated with clinical stage, indicating poor prognosis of CRC. Moreover, ATGL significantly promoted tumor cell proliferation in vitro. Mechanistically, ATGL promoted CRC cells proliferation by blocking mTOR signaling pathway and activating autophagy process. Further, ATGL regulated autophagy process through triggering SIRT1 expression. Our results reveal that ATGL promotes colorectal cancer growth by up regulating autophagy process and SIRT1 expression.


Assuntos
Neoplasias Colorretais , Sirtuína 1 , Humanos , Autofagia , Linhagem Celular Tumoral , Proliferação de Células , Neoplasias Colorretais/patologia , Metabolismo dos Lipídeos , Transdução de Sinais , Sirtuína 1/metabolismo
19.
Eur J Med Chem ; 262: 115875, 2023 Dec 15.
Artigo em Inglês | MEDLINE | ID: mdl-37879169

RESUMO

Multiple myeloma (MM) is a common hematological malignancy. Although recent clinical applications of immunomodulatory drugs, proteasome inhibitors and CD38-targeting antibodies have significantly improved the outcome of MM patient with increased survival, the incidence of drug resistance and severe treatment-related complications is gradually on the rise. This review article summarizes the characteristics and clinical investigations of several MM drugs in clinical trials, including their structures, mechanisms of action, structure-activity relationships, and clinical study progress. Furthermore, the application potentials of the drugs that have not yet entered clinical trials are also reviewed. The review also outlines the future directions of MM drug development.


Assuntos
Neoplasias Hematológicas , Mieloma Múltiplo , Humanos , Mieloma Múltiplo/tratamento farmacológico , Mieloma Múltiplo/patologia , Inibidores de Proteassoma/farmacologia , Inibidores de Proteassoma/uso terapêutico , Anticorpos Monoclonais/uso terapêutico , Neoplasias Hematológicas/tratamento farmacológico , Agentes de Imunomodulação
20.
Front Med (Lausanne) ; 10: 1247690, 2023.
Artigo em Inglês | MEDLINE | ID: mdl-37841018

RESUMO

Chemical modifications are a specific and efficient way to regulate the function of biological macromolecules. Among them, RNA molecules exhibit a variety of modifications that play important regulatory roles in various biological processes. More than 170 modifications have been identified in RNA molecules, among which the most common internal modifications include N6-methyladenine (m6A), n1-methyladenosine (m1A), 5-methylcytosine (m5C), and 7-methylguanine nucleotide (m7G). The most widely affected RNA modification is m6A, whose writers, readers, and erasers all have regulatory effects on RNA localization, splicing, translation, and degradation. These functions, in turn, affect RNA functionality and disease development. RNA modifications, especially m6A, play a unique role in renal cell carcinoma disease. In this manuscript, we will focus on the biological roles of m6A in renal diseases such as acute kidney injury, chronic kidney disease, lupus nephritis, diabetic kidney disease, and renal cancer.

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