RESUMO
Abstract Background Cutaneous squamous cell carcinoma (CSCC) is one of the most common types of skin cancer worldwide. Therefore, the identification of biomarkers associated with CSCC progression could aid in the early detection of high-risk squamous cell carcinoma and the development of novel therapeutic strategies. Objective This study aimed to investigate the expression patterns of silent mating type Information Regulation 2 homolog 6 (SIRT6) in CSCC and its clinical significance. Methods The protein expression level of SIRT6 in tissues was detected by immunohistochemistry, and the correlation between SIRT6 expression and clinicopathological parameters in CSCC patients was analyzed. The relative expression of SIRT6 in CSCC cell lineage and tissue specimens was determined by western blotting and PCR. The effect of SIRT6 silencing on cell proliferation was evaluated using cell counting kit 8. Wound healing, transwell method, and flow cytometry were used to investigate the migration, invasion, and cell cycle distribution/apoptosis of CSCC cells after SIRT6 silencing, respectively. Western blot was used to detect the expression of EMT (Epithelial-Mesenchymal Transition), cycle, apoptosis, and other related proteins. Results The high expression of SIRT6 was correlated with the location of cancer tissue and Broder staging in CSCC patients. Knockdown of SIRT6 inhibited the proliferation, migration, invasion and EMT of CSCC cells, and promoted their apoptosis, with cells blocked in G1 phase. Study limitations No animal experiments were conducted to further verify the results. Conclusion Decreased expression of SIRT6 can inhibit the occurrence and development of CSCC.
RESUMO
Histone deacetylase 9 (HDAC9) is a histone deacetylase (HDAC) subtype IIa protein that deacetylates histone 3 (H3), histone 4 (H4), and nonhistone proteins in vivo to alter chromosomal shape and regulate gene transcription. There have been few studies on the regulatory influence of the HDAC9 gene on the differentiation of chicken embryonic stem cells (cESCs) into male germ cells, and the significance of HDAC9 is still unknown. Therefore, we explored the specific role of HDAC9 during differentiation of the cESCs of Jilin Luhua chickens through inhibition or overexpression. In medium supplemented with 10-5 mol/L retinoic acid (RA), cESCs were stimulated to develop into germ cells. HDAC9 and germline marker gene mRNA and protein levels were measured using qRTâPCR and western blotting. During the differentiation of cESCs into male germ cells, overexpression of the HDAC9 gene greatly increased the mRNA and protein expression levels of the germline marker genes Stra8, Dazl, c-kit, and integrin É6. The HDAC9 inhibitor TMP195 significantly decreased the mRNA and protein expression levels of the above markers. In summary, HDAC9 positively regulates the differentiation of cESCs.
RESUMO
Colorectal cancer is one of the most common cancers worldwide. Lymph node metastasis is an important marker of colorectal cancer progression and plays a key role in the evaluation of patient prognosis. Accurate preoperative assessment of lymph node metastasis is crucial for devising appropriate treatment plans. However, current clinical imaging methods have limitations in many aspects. Therefore, the discovery of a method for accurately predicting lymph node metastasis is crucial clinical decision-making. DNA methylation is a common epigenetic modification that can regulate gene expression, which also has an important impact on the development of colorectal cancer. It is considered to be a promising biomarker with good specificity and stability and has promising application in predicting lymph node metastasis in patients with colorectal cancer. This article reviews the characteristics and limitations of currently available methods for predicting lymph node metastasis in patients with colorectal cancer and discusses the role of DNA methylation as a biomarker.
RESUMO
BACKGROUND: Cutaneous squamous cell carcinoma (CSCC) is one of the most common types of skin cancer worldwide. Therefore, the identification of biomarkers associated with CSCC progression could aid in the early detection of high-risk squamous cell carcinoma and the development of novel therapeutic strategies. OBJECTIVE: This study aimed to investigate the expression patterns of silent mating type Information Regulation 2 homolog 6 (SIRT6) in CSCC and its clinical significance. METHODS: The protein expression level of SIRT6 in tissues was detected by immunohistochemistry, and the correlation between SIRT6 expression and clinicopathological parameters in CSCC patients was analyzed. The relative expression of SIRT6 in CSCC cell lineage and tissue specimens was determined by western blotting and PCR. The effect of SIRT6 silencing on cell proliferation was evaluated using cell counting kit 8. Wound healing, transwell method, and flow cytometry were used to investigate the migration, invasion, and cell cycle distribution/apoptosis of CSCC cells after SIRT6 silencing, respectively. Western blot was used to detect the expression of EMT (Epithelial-Mesenchymal Transition), cycle, apoptosis, and other related proteins. RESULTS: The high expression of SIRT6 was correlated with the location of cancer tissue and Broder staging in CSCC patients. Knockdown of SIRT6 inhibited the proliferation, migration, invasion and EMT of CSCC cells, and promoted their apoptosis, with cells blocked in G1 phase. STUDY LIMITATIONS: No animal experiments were conducted to further verify the results. CONCLUSION: Decreased expression of SIRT6 can inhibit the occurrence and development of CSCC.
Assuntos
Apoptose , Carcinoma de Células Escamosas , Proliferação de Células , Sirtuínas , Neoplasias Cutâneas , Idoso , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Biomarcadores Tumorais/metabolismo , Biomarcadores Tumorais/análise , Western Blotting , Carcinoma de Células Escamosas/patologia , Carcinoma de Células Escamosas/genética , Ciclo Celular/fisiologia , Linhagem Celular Tumoral , Movimento Celular , Transição Epitelial-Mesenquimal , Regulação Neoplásica da Expressão Gênica , Imuno-Histoquímica , Sirtuínas/genética , Sirtuínas/metabolismo , Neoplasias Cutâneas/patologia , Neoplasias Cutâneas/genéticaRESUMO
To date, there have been three common methods for sampling the cerebral ischemic border zone in a rat model of transient middle cerebral artery occlusion (tMCAO): the "two o'clock method", the "diagonal method", and the "parallel line method". However, these methods have their own advantages and limitations. Here, we propose a modified technique (the "rectangular method") for sampling the ischemic border zone. A rat tMCAO model was prepared under the support of a compact small animal anesthesia machine. Cerebral blood flow was monitored by high-resolution laser Doppler to control the quality of modeling, and 2,3,5-triphenyl tetrazolium chloride (TTC) staining was used for cerebral infarction location assessment. Superoxide dismutase 2 (SOD2), cysteinyl aspartate specific proteinase (caspase)-3, caspase-9, and heat shock protein 70 (HSP70) were used to verify the reliability and reproducibility of the rectangular method. The expression of biomarkers (SOD2, caspase-3, caspase-9, and HSP70) in the traditional (two o'clock method after TTC staining) and modified (rectangular method) groups were increased. There were no significant differences between the groups. The rectangular method proposed herein is based on a modification of the diagonal method and parallel line method, which could provide a directly observable infarct borderline and a sufficient sampling area for subsequent experimental operations regardless of the cerebral infarct location. The assessed biomarkers (SOD2, caspase-3, caspase-9, and HSP70) demonstrated the reliability and reproducibility of the rectangular method, which may facilitate inter-laboratory comparisons.
Assuntos
Isquemia Encefálica , Infarto da Artéria Cerebral Média , Ratos , Animais , Caspase 3 , Caspase 9 , Reprodutibilidade dos Testes , Biomarcadores , Modelos Animais de Doenças , Isquemia Encefálica/metabolismoRESUMO
OBJECTIVE: The objective of this study was to investigate the effects of activity-based locomotor training (ABLT) on motor function and walking ability in children with spinal cord injury (SCI). MATERIALS AND METHODS: The Chinese National Knowledge Infrastructure, WanFang, VIP, PubMed, and Web of Science databases were searched for related studies, with two reviewers subsequently evaluating the literature quality using the Cochrane Handbook. RESULTS: A total of 11 studies were eligible, while only one met the ABLT standard program criteria. Overall, ABLT significantly improved the lower limb motor function, increased walking speed and distance, and improved the daily living ability of children with SCI. CONCLUSIONS: The ABLT strategy is of great significance to the motor function and walking ability of children with SCI. At present, there exist few studies on the application of ABLT for pediatric SCI. Further control studies with a larger sample size are required to improve the ABLT program guidelines for children with SCI.
OBJETIVO: Discuta el impacto del entrenamiento ejercicio basado en la actividad en la lesión de la médula espinal en la función de movimiento de los niños y la capacidad de caminar. MATERIALS Y MÉTODOS: Según China Zhiwang, Wanfang, VIP, PubMed, Science Network y otros documentos relacionados como fuente de datos. Dos revisores usan calidad de evaluación manual de Cochrane. RESULTADOS: Un total de 11 estudios cumplen con las condiciones. Solo hay un estudio que cumple con los proyectos estándar de ABLT. General, ABLT mejora significativamente la función de los niños con lesiones de la médula espinal, aumenta la velocidad y la distancia de caminar y mejora la capacidad de la vida diaria. CONCLUSIÓN: La estrategia ABLT es de gran importancia para la función de movimiento de los niños de la médula espinal y la capacidad de caminar. En la actualidad, ABLT tiene menos investigación en lesión pediátrica de la médula espinal. Es necesario mostrar la cantidad de muestra y controlar la investigación para mejorar las pautas del plan ABLT para el daño de la médula espinal a los niños.
Assuntos
Traumatismos da Medula Espinal , Caminhada , Humanos , Criança , Traumatismos da Medula Espinal/complicações , Traumatismos da Medula Espinal/terapia , Modalidades de Fisioterapia , Bases de Dados Factuais , Medula EspinalRESUMO
Abstract Objective To investigate the relationship between lactate acid level and hospitalization mortality in neonatal necrotizing enterocolitis (NEC). Method Paediatric-specific critical care database collected clinical data from the intensive care unit of Children's Hospital Affiliated to Zhejiang University Medical College from 2010 to 2018. Clinical and laboratory examination information of NEC patients was collected and divided into the death group and discharge group to find out the risk factors affecting the prognosis through univariate and multivariate analysis. Results Among 104 NEC neonates, the admission age was 7.5 days and the weight was 2.03 kg. Comparing the death group with the discharge group, there were significant differences in therapeutic regimen, pH, serum albumin, total protein, creatinine and lactate acid. Multivariate and threshold effect analysis showed that lactate acid had a linear correlation with hospital mortality, and newborns who died in the hospital had much higher lactate levels than those who were discharged. The mortality of NEC newborns increased by 40-45% for every 1 mmol/L increase in lactate acid level. Conclusions There was a correlation between lactate acid level and hospital mortality in newborns with NEC, and lactate acid level was an important index to evaluate the prognosis of NEC.
RESUMO
OBJECTIVE: To investigate the relationship between lactate acid level and hospitalization mortality in neonatal necrotizing enterocolitis (NEC). METHOD: Paediatric-specific critical care database collected clinical data from the intensive care unit of Children's Hospital Affiliated to Zhejiang University Medical College from 2010 to 2018. Clinical and laboratory examination information of NEC patients was collected and divided into the death group and discharge group to find out the risk factors affecting the prognosis through univariate and multivariate analysis. RESULTS: Among 104 NEC neonates, the admission age was 7.5 days and the weight was 2.03 kg. Comparing the death group with the discharge group, there were significant differences in therapeutic regimen, pH, serum albumin, total protein, creatinine and lactate acid. Multivariate and threshold effect analysis showed that lactate acid had a linear correlation with hospital mortality, and newborns who died in the hospital had much higher lactate levels than those who were discharged. The mortality of NEC newborns increased by 40-45% for every 1 mmol/L increase in lactate acid level. CONCLUSIONS: There was a correlation between lactate acid level and hospital mortality in newborns with NEC, and lactate acid level was an important index to evaluate the prognosis of NEC.
Assuntos
Enterocolite Necrosante , Doenças do Recém-Nascido , Recém-Nascido , Humanos , Criança , Peso ao Nascer , Estudos Retrospectivos , Enterocolite Necrosante/diagnóstico , Idade Gestacional , Fatores de Risco , Prognóstico , Cuidados CríticosRESUMO
To date, there have been three common methods for sampling the cerebral ischemic border zone in a rat model of transient middle cerebral artery occlusion (tMCAO): the "two o'clock method", the "diagonal method", and the "parallel line method". However, these methods have their own advantages and limitations. Here, we propose a modified technique (the "rectangular method") for sampling the ischemic border zone. A rat tMCAO model was prepared under the support of a compact small animal anesthesia machine. Cerebral blood flow was monitored by high-resolution laser Doppler to control the quality of modeling, and 2,3,5-triphenyl tetrazolium chloride (TTC) staining was used for cerebral infarction location assessment. Superoxide dismutase 2 (SOD2), cysteinyl aspartate specific proteinase (caspase)-3, caspase-9, and heat shock protein 70 (HSP70) were used to verify the reliability and reproducibility of the rectangular method. The expression of biomarkers (SOD2, caspase-3, caspase-9, and HSP70) in the traditional (two o'clock method after TTC staining) and modified (rectangular method) groups were increased. There were no significant differences between the groups. The rectangular method proposed herein is based on a modification of the diagonal method and parallel line method, which could provide a directly observable infarct borderline and a sufficient sampling area for subsequent experimental operations regardless of the cerebral infarct location. The assessed biomarkers (SOD2, caspase-3, caspase-9, and HSP70) demonstrated the reliability and reproducibility of the rectangular method, which may facilitate inter-laboratory comparisons.
RESUMO
ABSTRACT Introduction There are many drawbacks in sports, one of the main problems being injuries. Objective This work aimed to study the effect of prolonged basketball practice and associated sports injuries on electrophysiological indicators about the functional state of the neuromuscular apparatus in specialized athletes. Methods A study was conducted in which 14 basketball players participated voluntarily: 7 basketball players aged 17 to 23 years with first category sports qualifications, relatively healthy, with a history of knee and ankle injuries, and seven non-athletes with no history of injuries. Psychophysiological and electrophysiological methods were used for the study, designed to diagnose strength and endurance, measure rhythmic dynamics in hand movements, evaluate the mobility of neural processes, and the functional state of the central nervous system and processes in the central nervous system. Results It was established that regular sports training leads to morphological and functional changes in the neuromuscular system. Conclusion Due to repeated injuries, basketball players experience a decrease in the conduction velocity of the electrical pulse in the neural fiber pathway and in the level of reflex excitability in the neuronal motor ensemble of the lumbosacral segments of the spinal cord that innervate the bilateral muscles of the lower limbs; a weakening of the nervous system resistance, mobility of the nervous processes, deterioration of the functional state of the central nervous system and analyzers was noted. Evidence level II; Therapeutic studies - outcomes research.
RESUMO Introdução Há muitos inconvenientes no esporte, sendo um dos principais problemas as lesões. Objetivo O objetivo deste trabalho foi estudar o efeito da prática prolongada do basquetebol e as lesões esportivas associadas sobre os indicadores eletrofisiológicos sobre o estado funcional do aparelho neuromuscular em atletas especializados. Métodos Foi realizado um estudo no qual 14 jogadores de basquetebol participaram voluntariamente: 7 jogadores de basquete de 17 a 23 anos com qualificações esportivas da primeira categoria, relativamente saudáveis, com histórico de lesões no joelho e tornozelo; e 7 não-atletas sem histórico de lesões. Métodos psicofisiológicos e eletrofisiológicos foram utilizados para o estudo, que foram desenvolvidos para diagnosticar a força e resistência, mensurando a dinâmica rítmica nos movimentos das mãos, avaliando a mobilidade dos processos neurais, assim como o estado funcional do sistema nervoso central e os processos nervosos no sistema nervoso central. Resultados Foi estabelecido que o treinamento esportivo regular leva a mudanças morfológicas e funcionais no sistema neuromuscular. Conclusão Devido as repetidas lesões, os jogadores de basquetebol experimentam uma diminuição da velocidade de condução do pulso elétrico no trajeto das fibras neurais e do nível de excitabilidade reflexa no conjunto neuronal motor dos segmentos lombossacrais da medula espinhal que inervam os músculos bilaterais dos membros inferiores. Além disso, notou-se um enfraquecimento da resistência do sistema nervoso, mobilidade dos processos nervosos, deterioração do estado funcional do sistema nervoso central e dos analisadores. Evidência nível II; Estudos terapêuticos - pesquisa de resultados.
RESUMEN Introducción Existen muchos inconvenientes en el deporte, siendo uno de los principales problemas las lesiones. Objetivo El objetivo de este trabajo fue estudiar el efecto de la práctica prolongada del baloncesto y las lesiones deportivas asociadas sobre los indicadores electrofisiológicos del estado funcional del aparato neuromuscular en atletas especializados. Métodos Se realizó un estudio en el que participaron voluntariamente 14 jugadores de baloncesto: 7 jugadores de baloncesto de entre 17 y 23 años con titulación deportiva de primera categoría, relativamente sanos, con antecedentes de lesiones de rodilla y tobillo; y 7 no deportistas sin antecedentes de lesiones. Para el estudio se utilizaron métodos psicofisiológicos y electrofisiológicos, destinados a diagnosticar la fuerza y la resistencia, midiendo la dinámica rítmica en los movimientos de la mano, evaluando la movilidad de los procesos neurales, así como el estado funcional del sistema nervioso central y los procesos nerviosos en el sistema nervioso central. Resultados Se estableció que el entrenamiento deportivo regular produce cambios morfológicos y funcionales en el sistema neuromuscular. Conclusión Debido a las lesiones repetidas, los jugadores de baloncesto experimentan una disminución de la velocidad de conducción del impulso eléctrico en el trayecto de las fibras neuronales y del nivel de excitabilidad refleja en el conjunto neuronal motor de los segmentos lumbosacros de la médula espinal que inervan los músculos bilaterales de las extremidades inferiores. Además, se observó un debilitamiento de la resistencia del sistema nervioso, la movilidad de los procesos nerviosos, el deterioro del estado funcional del sistema nervioso central y de los analizadores. Nivel de evidencia II; Estudios terapéuticos - investigación de resultados.