RESUMEN
Caddisworms (Trichoptera) spin adhesive silks to construct a variety of underwater composite structures. Many studies have focused on the fibroin heavy chain of caddisworm silk and found that it contains heavy phosphorylation to maintain a stable secondary structure. Besides fibroins, recent studies have also identified some new silk proteins within caddisworm silk. To better understand the silk composition and its secretion process, this study reports the silk gland proteome of a retreat-building caddisworm, Stenopsyche angustata Martynov (Trichoptera, Stenopsychidae). Using liquid chromatography tandem mass spectrometry (LC-MS/MS), 2389 proteins were identified in the silk gland of S. angustata, among which 192 were predicted as secreted silk proteins. Twenty-nine proteins were found to be enriched in the front silk gland, whereas 109 proteins were enriched in the caudal silk gland. The fibroin heavy chain and nine uncharacterized silk proteins were identified as phosphorylated proteins. By analysing the sequence of the fibroin heavy chain, we found that it contains 13 Gly/Thr/Pro-rich regions, 12 Val/Ser/Arg-rich regions and a Gly/Arg/Thr-rich region. Three uncharacterized proteins were identified as sericin-like proteins due to their larger molecular weights, signal peptides and repetitive motifs rich in serine. This study provides valuable information for further clarifying the secretion and adhesion of underwater caddisworm silk.
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Bombyx , Fibroínas , Animales , Seda/química , Fibroínas/genética , Fibroínas/química , Insectos/metabolismo , Larva/metabolismo , Proteoma/metabolismo , Cromatografía Liquida , Espectrometría de Masas en Tándem , Bombyx/metabolismo , Proteínas de Insectos/metabolismoRESUMEN
Watershed ecosystems play a pivotal role in maintaining the global carbon cycle and reducing global warming by serving as vital carbon reservoirs for sustainable ecosystem management. In this study, we based on the "quantity-mechanism-scenario" frameworks, integrate the MCE-CA-Markov and InVEST models to evaluate the spatiotemporal variations of carbon stocks in mid- to high-latitude alpine watersheds in China under historical and future climate scenarios. Additionally, the study employs the Geographic Detector model to explore the driving mechanisms influencing the carbon storage capacity of watershed ecosystems. The results showed that the carbon stock of the watershed increased by about 15.9 Tg from 1980 to 2020. Fractional Vegetation Cover (FVC), Digital Elevation Model (DEM), and Mean Annual Temperature (MAT) had the strongest explanatory power for carbon stocks. Under different climate scenarios, it was found that the SSP2-4.5 scenario had a significant rise in carbon stock from 2020 to 2050, roughly 24.1 Tg. This increase was primarily observed in the southeastern region of the watersheds, with forest and grassland effectively protected. Conversely, according to the SSP5-8.5 scenario, the carbon stock would decrease by about 50.53 Tg with the expansion of cultivated and construction land in the watershed's southwest part. Therefore, given the vulnerability of mid- to high-latitude mountain watersheds, global warming trends continue to pose a greater threat to carbon sequestration in watersheds. Our findings carry important implications for tackling potential ecological threats in mid- to high-latitude watersheds in the Northern Hemisphere and assisting policymakers in creating carbon sequestration plans, as well as for reducing climate change.
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Carbono , Cambio Climático , Ecosistema , Monitoreo del Ambiente , China , Carbono/análisis , Secuestro de Carbono , Ciclo del Carbono , Conservación de los Recursos Naturales , Modelos TeóricosRESUMEN
CRISPR/Cas9 gene editing technology, as a highly efficient genome editing method, has been extensively employed in the realm of animal husbandry for genetic improvement. With its remarkable efficiency and precision, this technology has revolutionized the field of animal husbandry. Currently, CRISPR/Cas9-based gene knockout, gene knock-in and gene modification techniques are widely employed to achieve precise enhancements in crucial production traits of livestock and poultry species. In this review, we summarize the operational principle and development history of CRISPR/Cas9 technology. Additionally, we highlight the research advancements utilizing this technology in muscle growth and development, fiber growth, milk quality composition, disease resistance breeding, and animal welfare within the livestock and poultry sectors. Our aim is to provide a more comprehensive understanding of the application of CRISPR/Cas9 technology in gene editing for livestock and poultry.
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Sistemas CRISPR-Cas , Ganado , Animales , Ganado/genética , Aves de Corral/genética , Edición Génica/métodos , Técnicas de Sustitución del GenRESUMEN
With the rapid growth of data driven by high-throughput sequencing technologies, genomics has entered an era characterized by big data, which presents significant challenges for traditional bioinformatics methods in handling complex data patterns. At this critical juncture of technological progress, deep learning-an advanced artificial intelligence technology-offers powerful capabilities for data analysis and pattern recognition, revitalizing genomic research. In this review, we focus on four major deep learning models: Convolutional Neural Network(CNN), Recurrent Neural Network(RNN), Long Short-Term Memory(LSTM), and Generative Adversarial Network(GAN). We outline their core principles and provide a comprehensive review of their applications in DNA, RNA, and protein research over the past five years. Additionally, we also explore the use of deep learning in livestock genomics, highlighting its potential benefits and challenges in genetic trait analysis, disease prevention, and genetic enhancement. By delivering a thorough analysis, we aim to enhance precision and efficiency in genomic research through deep learning and offer a framework for developing and applying livestock genomic strategies, thereby advancing precision livestock farming and genetic breeding technologies.
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Aprendizaje Profundo , Genómica , Genómica/métodos , Animales , Redes Neurales de la Computación , Ganado/genética , Humanos , Biología Computacional/métodosRESUMEN
An electrochemical immunosensor based on ferrocene (Fc)-functionalized nanocomposites was fabricated as an efficient electroactive signal probe to amplify electrochemical signals for Salmonella typhimurium detection. The electrochemical signal amplification probe was constructed by encapsulating ferrocene into S. typhimurium-specific antimicrobial peptides Magainin I (MI)-Cu3(PO4)2 organic-inorganic nanocomposites (Fc@MI) through a one-step process. Magnetic beads (MBs) coupled with antibody were used as capture ingredient for target magnetic separation, and Fc@MI nanoparticles were used as signal labels in the immunoassays. The sandwich of MBs-target-Fc@MI assay was performed using a screen-printed carbon electrode as transducer surface. The immunosensor platform presents a low limit of detection (LOD) of 3 CFU·mL-1 and a linear range from 10 to 107 CFU·mL-1, with good specificity and precision, and was successfully applied for S. typhimurium detection in milk. Graphical abstract One-pot process antimicrobial peptides Magainin I-Cu3(PO4)2 organic-inorganic nanocomposites (Fc@MI) were used as ideal electrochemical signal label, integrating both essential functions of biological recognition and signal amplification. Screen-printed carbon electrode (SPCE) was used as the electrochemical system for Salmonella typhimurium detection.
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Técnicas Electroquímicas/instrumentación , Compuestos Ferrosos/química , Inmunoensayo/métodos , Metalocenos/química , Nanocompuestos/química , Salmonella typhimurium/aislamiento & purificación , Técnicas Electroquímicas/métodos , Sensibilidad y Especificidad , Transducción de SeñalRESUMEN
Excessive plasma triglyceride (TG) and cholesterol levels promote the progression of several prevalent cardiovascular risk factors, including atherosclerosis, which is a leading death cause. Perilipin 5 (Plin5), an important perilipin protein, is abundant in tissues with very active lipid catabolism and is involved in the regulation of oxidative stress. Although inï¬ammation and oxidative stress play a critical role in atherosclerosis development, the underlying mechanisms are complex and not completely understood. In the present study, we demonstrated the role of Plin5 in high-fat-diet-induced atherosclerosis in apolipoprotein E null (ApoE-/- ) mice. Our results suggested that Plin5 expressions increased in the artery tissues of ApoE-/- mice. ApoE/Plin5 double knockout (ApoE-/- Plin5-/- ) exacerbated severer atherogenesis, accompanied with significantly disturbed plasma metabolic profiles, such as elevated TG, total cholesterol, and low-density lipoprotein cholesterol levels and reduced high-density lipoprotein cholesterol contents. ApoE-/- Plin5-/- exhibited a higher number of inflammatory monocytes and neutrophils, as well as overexpression of cytokines and chemokines linked with an inflammatory response. Consistently, the IκBα/nuclear factor kappa B pathway was strongly activated in ApoE-/- Plin5-/- . Notably, apoptosis was dramatically induced by ApoE-/- Plin5-/- , as evidenced by increased cleavage of Caspase-3 and Poly (ADP-ribose) polymerase-2. In addition, ApoE-/- Plin5-/- contributed to oxidative stress generation in the aortic tissues, which was linked with the activation of phosphatidylinositol 3-kinase/protein kinase B and mitogen-activated protein kinases pathways. In vitro, oxidized low-density lipoprotein (ox-LDL) increased Plin5 expression in RAW264.7 cells. Its knockdown enhanced inflammation, apoptosis, oxidative stress, and lipid accumulation, while promotion of Plin5 markedly reduced all the effects induced by ox-LDL in cells. These studies strongly supported that Plin5 could be a new regulator against atherosclerosis, providing new insights on therapeutic solutions.
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Apoptosis , Aterosclerosis/metabolismo , Péptidos y Proteínas de Señalización Intracelular/deficiencia , Proteínas Musculares/deficiencia , Estrés Oxidativo , Animales , Aterosclerosis/genética , Aterosclerosis/patología , Caspasa 3/genética , Caspasa 3/metabolismo , Inflamación/genética , Inflamación/metabolismo , Inflamación/patología , Péptidos y Proteínas de Señalización Intracelular/metabolismo , Ratones , Ratones Noqueados para ApoE , Proteínas Musculares/metabolismo , Poli(ADP-Ribosa) Polimerasas/genética , Poli(ADP-Ribosa) Polimerasas/metabolismo , Células RAW 264.7RESUMEN
Excessive plasma triglyceride and cholesterol levels promote the progression of several prevalent cardiovascular risk factors, including atherosclerosis, which is a leading death cause. Perilipin 5 (Plin5), an important perilipin protein, is abundant in tissues with very active lipid catabolism, and is involved in the regulation of oxidative stress. Although, in?ammation and oxidative stress play a critical role in atherosclerosis development, the underlying mechanisms are complex and not completely understood. In the present study, we demonstrated the role of Plin5 in high-fat-diet-induced atherosclerosis in apolipoprotein E null (ApoE-/- ) mice. Our results suggested that Plin5 expressions increased in the artery tissues of ApoE-/- mice. ApoE/Plin5 double knockout (ApoE-/- Plin5-/- ) exacerbated severer atherogenesis, accompanied with significantly disturbed plasma metabolic profiles, such as elevated triglyceride (TG), total cholesterol (TC) and low-density lipoprotein cholesterol (LDLC) levels and reduced high-density lipoprotein cholesterol (HDLC) contents. ApoE-/- Plin5-/- exhibited higher number of inflammatory monocytes and neutrophils, as well as over-expression of cytokines and chemokines linked with inflammatory response. Consistently, IκBα/nuclear factor kappa B (NF-κB) pathway was strongly activated in ApoE-/- Plin5-/- . Notably, apoptosis was dramatically induced by ApoE-/- Plin5-/- , as evidenced by increased cleavage of Caspase-3 and Poly (ADP-ribose) polymerase-2 (PARP-2). In addition, ApoE-/- Plin5-/- contributed to oxidative stress generation in the aortic tissues, which was linked with the activation of phosphatidylinositol 3-kinase /protein kinase B (PI3K/AKT) and mitogen-activated protein kinases (MAPKs) pathways. In vitro, oxidized low-density lipoprotein (oxLDL) increased Plin5 expression in RAW264.7 cells. Its knockdown enhanced inflammation, apoptosis, oxidative stress and lipid accumulation, while promotion of Plin5 markedly reduced all the effects induced by ox-LDL in cells. These studies strongly supported that Plin5 could be a new regulator against atherosclerosis, providing new insights on therapeutic solutions. This article is protected by copyright. All rights reserved.
RESUMEN
We describe the case of a patient with Budd-Chiari syndrome who presented with an unusual membranous obstruction of the inferior vena cava complicated by massive portal vein thrombosis (PVT). The patient underwent percutaneous transluminal balloon angioplasty through the right groin and was prescribed oral warfarin for 6 months. Treatment resulted in the complete disappearance of the PVT. This therapeutic strategy should be considered in the management of other cases of this rare, complex disease.
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Angioplastia de Balón , Síndrome de Budd-Chiari/terapia , Vena Porta , Vena Cava Inferior , Trombosis de la Vena/terapia , Administración Oral , Anticoagulantes/administración & dosificación , Síndrome de Budd-Chiari/complicaciones , Síndrome de Budd-Chiari/diagnóstico por imagen , Angiografía por Tomografía Computarizada , Humanos , Masculino , Persona de Mediana Edad , Tomografía Computarizada Multidetector , Flebografía/métodos , Vena Porta/diagnóstico por imagen , Resultado del Tratamiento , Vena Cava Inferior/diagnóstico por imagen , Trombosis de la Vena/diagnóstico por imagen , Trombosis de la Vena/etiología , Warfarina/administración & dosificaciónRESUMEN
Purpose To identify the characteristics and evaluate the long-term outcomes of endovascular treatment of Budd-Chiari syndrome with upper gastrointestinal hemorrhage. Methods Forty-seven consecutive Budd-Chiari syndrome patients with upper gastrointestinal hemorrhage were referred for the treatment with percutaneous transluminal balloon angioplasty, and subsequently underwent follow-up. Data were retrospectively collected and follow-up observations were performed at 1, 2, 2-5, and 5-8 years postoperatively. Results Cirrhosis was presented in 16 patients, and splenoportography reviewed obvious varices in 18 patients. Percutaneous transluminal balloon angioplasty was technically successful in all patients. Major procedure-related complications occurred in 3 of the 47 patients (6.38%). The cumulative 1, 2, 2-5, and 5-8 year primary patency rates were 100% (46/46), 93.2% (41/44), 90.9% (40/44), and 86.4% (19/22), respectively. The cumulative 1, 2, 2-5, and 5-8 year secondary patency rates were 100% (47/47), 100% (44/44), 100% (44/44), and 95.5% (21/22), respectively. Mean and median duration of primary patency was 65.17 ± 3.78 and 69.0 ± 5.69 months, respectively. No upper gastrointestinal hemorrhage recurred during follow-ups. The mean survival time was 66.97 ± 3.61 months and the median survival time was 69.0 ± 4.10 months. Conclusion PTBA was an effective treatment that can prevent recurrence of the life-threatening complications and ensured long-term satisfactory clinical outcomes for Budd-Chiari syndrome patients with upper gastrointestinal hemorrhage. Percutaneous transhepatic variceal embolization was not recommended for all Budd-Chiari syndrome patients with upper gastrointestinal hemorrhage.
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Angioplastia de Balón , Síndrome de Budd-Chiari/terapia , Embolización Terapéutica , Hemorragia Gastrointestinal/terapia , Adulto , Anciano , Angioplastia de Balón/efectos adversos , Síndrome de Budd-Chiari/complicaciones , Síndrome de Budd-Chiari/diagnóstico , Síndrome de Budd-Chiari/fisiopatología , Embolización Terapéutica/efectos adversos , Femenino , Hemorragia Gastrointestinal/diagnóstico , Hemorragia Gastrointestinal/etiología , Hemorragia Gastrointestinal/fisiopatología , Gastroscopía , Humanos , Masculino , Persona de Mediana Edad , Flebografía , Recurrencia , Estudios Retrospectivos , Factores de Riesgo , Factores de Tiempo , Resultado del Tratamiento , Grado de Desobstrucción Vascular , Adulto JovenRESUMEN
PURPOSE: To prospectively determine the value of blood flow velocity in the inferior vena cava (IVC) on color Doppler ultrasonography for the optimization of the delay in scanning time after contrast injection during computed tomography (CT) venography in patients with Budd-Chiari syndrome (BCS) with IVC obstruction. METHODS: We enrolled 122 consecutive BCS patients with IVC obstruction. All patients underwent color Doppler ultrasonography, CT venography, and digital subtraction angiography (DSA) in that order prior to treatment. The delay in scanning time during CT venography was set at 120, 180, 240, and 300 s after contrast injection. The correlation between delay in CT scanning and IVC blood flow velocity on color Doppler ultrasonography was explored. Image quality was classified as good, moderate, or poor. Patients with good CT image quality were considered to have an optimal delay in scanning time. RESULTS: Delays in scanning time of 120, 180, 240, and 300 s yielded good-quality images in 2, 7, 49, and 64 patients, respectively. The corresponding IVC blood flow velocities in these patients were 16.10 ± 0.42 cm/s (range 15.8-16.4 cm/s), 12.90 ± 1.58 cm/s (range, 11-15 cm/s), 7.53 ± 1.35 cm/s (range 5-10 cm/s), and 1.95 ± 1.75 cm/s (range 0-5.5 cm/s). CONCLUSION: IVC blood flow velocity on color Doppler ultrasonography could serve as a useful tool for the optimization of the delay in scanning time during CT venography to ensure good-quality images for the diagnosis of BCS with IVC obstruction.
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Síndrome de Budd-Chiari/fisiopatología , Tomografía Computarizada por Rayos X , Ultrasonografía Doppler en Color , Vena Cava Inferior/diagnóstico por imagen , Vena Cava Inferior/fisiopatología , Adolescente , Adulto , Anciano , Velocidad del Flujo Sanguíneo , Niño , Femenino , Humanos , Masculino , Persona de Mediana Edad , Flebografía/métodos , Estudios Prospectivos , Factores de Tiempo , Vena Cava Inferior/anomalías , Adulto JovenRESUMEN
BACKGROUND AND AIMS: The restenosis following percutaneous transluminal balloon angioplasty (PTBA) is high for Budd-Chiari syndrome (BCS) patients with hepatic venous obstruction (HVO). We aim to evaluate the safety and long-term outcome of PTBA with a large balloon catheter in a large series of patients with HVO. METHODS: Between January 2005 and December 2013, 93 consecutive BCS patients with HVO were referred for PTBA and subsequently underwent color Doppler ultrasonography or angiography follow-up. Data were retrospectively collected, and follow-up observations were performed at 1-, 2-, 2- to 5-, and 5- to 8-years postoperatively. RESULTS: Percutaneous transluminal balloon angioplasty was technically successful in all patients. Ninety-one patients (97.85%) were treated with PTBA and two with PTBA and stent. Major procedure-related complications occurred in six of the 93 patients (6.45%). The cumulative 1-, 2-, 2- to 5-, and 5- to 8-year primary patency rates were 97.5%, 92.9%, 90%, and 86.5%, respectively. Cumulative 1-, 2-, 2- to 5-, and 5- to 8-year secondary patency rates were 100%, 100%, 98.6%, and 97.3%, respectively. Mean and median primary patency rates were 51.50 ± 3.01 months and 55.0 ± 3.63 months, respectively. Cumulative 1-, 2-, 2- to 5-, and 5- to 8-year survival rates were 98.75%, 98.6%, 100%, and 100%, respectively. Mean and median survival times were 53.10 ± 3.04 months and 55.0 ± 3.64 months, respectively. CONCLUSION: Percutaneous transluminal balloon angioplasty with a large balloon is a safe and effective treatment that could provide excellent rates of long-term patency and survival for the majority of Chinese patients with BCS and HVO.
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Angioplastia de Balón/métodos , Síndrome de Budd-Chiari/terapia , Adolescente , Adulto , Anciano , Angioplastia de Balón/mortalidad , Pueblo Asiatico , Síndrome de Budd-Chiari/complicaciones , Síndrome de Budd-Chiari/mortalidad , Femenino , Estudios de Seguimiento , Venas Hepáticas , Enfermedad Veno-Oclusiva Hepática/complicaciones , Enfermedad Veno-Oclusiva Hepática/terapia , Humanos , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Seguridad , Tasa de Supervivencia , Tiempo , Factores de Tiempo , Resultado del Tratamiento , Adulto JovenRESUMEN
Recently, transcriptome sequencing technology has achieved significant progresses in gene network regulation of important economic traits in animals. As the derivative of mammalian skin, hair follicle is capable of self-renew. Its proliferation and differentiation result in hair formation. Researches have revealed that many growth factors and receptors coordinate genes and environment, as well as play an extremely important role during hair growth. In this review, we summarize the progresses that transcriptome sequencing technologies have achieved in researches of hair follicle development and renegeration in a variety of species, such as humans, mice, goats. We aim to provide theoretical mechanisms for the artificial interference of villus growth cycle, and new ideas for therapeutic treatment of skin hair follicle- related diseases.
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Folículo Piloso/crecimiento & desarrollo , Transcriptoma , Animales , Enfermedades del Cabello/genética , Enfermedades del Cabello/terapia , Humanos , MicroARNs/fisiologíaRESUMEN
Budd-Chiari syndrome (BCS) caused by hepatic venous outflow obstruction may result in portal hypertension and the development of intrahepatic collaterals that bypass the obstruction. Spontaneous intrahepatic portosystemic venous shunt (SIPSVS) is uncommon and may be associated with portal hypertension. SIPSVS is extremely rare in patients with BCS and has not been well documented. We report a case of SIPSVS in a 42-year-old woman with BCS caused by membranous obstruction and chronic thrombosis in the inferior vena cava (IVC). A direct vascular communication between the left portal vein and IVC was confirmed by sonography and a computed tomography angiography scan. The patient underwent successful percutaneous balloon angioplasty of the IVC. Surgical or endovascular treatment for SIPSVS was not carried out because the patient was asymptomatic and remained asymptomatic in terms of encephalopathy at a 1-year follow-up.
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Síndrome de Budd-Chiari/fisiopatología , Circulación Colateral , Circulación Hepática , Vena Porta/fisiopatología , Vena Cava Inferior/fisiopatología , Adulto , Angioplastia de Balón , Síndrome de Budd-Chiari/diagnóstico , Síndrome de Budd-Chiari/terapia , Ecocardiografía Doppler en Color , Femenino , Humanos , Tomografía Computarizada Multidetector , Flebografía/métodos , Vena Porta/diagnóstico por imagen , Resultado del Tratamiento , Vena Cava Inferior/diagnóstico por imagenRESUMEN
We present an unusual case of portal, mesenteric, and splenic vein thromboses after endovascular embolization for gastrointestinal bleeding caused by a splenic arteriovenous fistula. The thromboses were successfully treated with anticoagulation therapy. The patient was a 37-year-old woman who presented with portal hypertension manifested by gastrointestinal bleeding with no evidence of liver disease. Splenic arteriography confirmed the presence of a high-flow arteriovenous fistulous communication from the splenic artery directly into the splenic vein. The arteriovenous fistula was successfully treated with percutaneous transarterial embolization by embolization coils and the patient achieved effective hemostasis. Low-molecular-weight heparin and warfarin were administrated to prevent thrombosis in the portal venous system after the procedure. Although anticoagulants were immediately administered, thromboses of the portal, mesenteric, and splenic veins were diagnosed by contrast-enhanced computed tomography after 10 days. Complete recanalization of the portal venous system confirmed by contrast-enhanced computed tomography was achieved by administering warfarin orally for 3 months.
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Fístula Arteriovenosa/terapia , Embolización Terapéutica/efectos adversos , Hemorragia Gastrointestinal/terapia , Venas Mesentéricas , Vena Porta , Vena Esplénica , Trombosis/etiología , Adulto , Fístula Arteriovenosa/diagnóstico , Embolización Terapéutica/métodos , Femenino , Hemorragia Gastrointestinal/diagnóstico , Humanos , Bazo/irrigación sanguínea , Trombosis/diagnóstico , Tomografía Computarizada por Rayos XRESUMEN
We describe an elderly woman who presented with an unusual primary arterioportal fistula and cavernous transformation of the portal vein caused by portal thrombosis, which were subsequently managed with endovascular coil embolization and transjugular intrahepatic portosystemic shunt using 2 stents after balloon remodeling. This case shows a rarely seen condition in the elderly and a novel management strategy that should be considered in the management of this complex disease.
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Angioplastia de Balón , Fístula Arteriovenosa/terapia , Embolización Terapéutica , Vena Porta , Derivación Portosistémica Intrahepática Transyugular , Trombosis de la Vena/complicaciones , Anciano , Angioplastia de Balón/instrumentación , Fístula Arteriovenosa/diagnóstico , Fístula Arteriovenosa/etiología , Femenino , Humanos , Vena Porta/diagnóstico por imagen , Portografía/métodos , Stents , Tomografía Computarizada por Rayos X , Resultado del Tratamiento , Ultrasonografía Doppler en Color , Trombosis de la Vena/diagnósticoRESUMEN
A 57-year-old man presented with a rare extrahepatic portal vein bifurcation scar stenosis involving the proximal splenic vein and superior mesenteric vein after a Whipple procedure. He was treated with endovascular coil embolization for the gastroesophageal varices and kissing stents for the portal vein bifurcation stenosis. This case illustrates a rarely seen complication after the Whipple procedure and a novel management strategy that can be considered in the management of this complex disease.
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Procedimientos Endovasculares/instrumentación , Pancreaticoduodenectomía/efectos adversos , Vena Porta , Stents , Enfermedades Vasculares/terapia , Constricción Patológica , Embolización Terapéutica , Humanos , Masculino , Persona de Mediana Edad , Tomografía Computarizada Multidetector , Flebografía/métodos , Vena Porta/diagnóstico por imagen , Vena Porta/fisiopatología , Resultado del Tratamiento , Ultrasonografía Doppler en Color , Enfermedades Vasculares/diagnóstico , Enfermedades Vasculares/etiología , Enfermedades Vasculares/fisiopatología , Grado de Desobstrucción VascularRESUMEN
More and more studies have shown that microRNAs (miRNAs) play an indispensable role in the study of complex diseases in humans. Traditional biological experiments to detect miRNA-disease associations are expensive and time-consuming. Therefore, it is necessary to propose efficient and meaningful computational models to predict miRNA-disease associations. In this study, we aim to propose a miRNA-disease association prediction model based on sparse learning and multilayer random walks (SLMRWMDA). The miRNA-disease association matrix is decomposed and reconstructed by the sparse learning method to obtain richer association information, and at the same time, the initial probability matrix for the random walk with restart algorithm is obtained. The disease similarity network, miRNA similarity network, and miRNA-disease association network are used to construct heterogeneous networks, and the stable probability is obtained based on the topological structure features of diseases and miRNAs through a multilayer random walk algorithm to predict miRNA-disease potential association. The experimental results show that the prediction accuracy of this model is significantly improved compared with the previous related models. We evaluated the model using global leave-one-out cross-validation (global LOOCV) and fivefold cross-validation (5-fold CV). The area under the curve (AUC) value for the LOOCV is 0.9368. The mean AUC value for 5-fold CV is 0.9335 and the variance is 0.0004. In the case study, the results show that SLMRWMDA is effective in inferring the potential association of miRNA-disease.
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MicroARNs , Humanos , MicroARNs/genética , Algoritmos , Área Bajo la Curva , Biología Computacional/métodos , Predisposición Genética a la EnfermedadRESUMEN
Small molecules (SMs) play a pivotal role in regulating microRNAs (miRNAs). Existing prediction methods for associations between SM-miRNA have overlooked crucial aspects: the incorporation of local topological features between nodes, which represent either SMs or miRNAs, and the effective fusion of node features with topological features. This study introduces a novel approach, termed high-order topological features for SM-miRNA association prediction (HTFSMMA), which specifically addresses these limitations. Initially, an association graph is formed by integrating SM-miRNA association data, SM similarity, and miRNA similarity. Subsequently, we focus on the local information of links and propose target neighborhood graph convolutional network for extracting local topological features. Then, HTFSMMA employs graph attention networks to amalgamate these local features, thereby establishing a platform for the acquisition of high-order features through random walks. Finally, the extracted features are integrated into the multilayer perceptron to derive the association prediction scores. To demonstrate the performance of HTFSMMA, we conducted comprehensive evaluations including five-fold cross-validation, leave-one-out cross-validation (LOOCV), SM-fixed local LOOCV, and miRNA-fixed local LOOCV. The area under receiver operating characteristic curve values were 0.9958 ± 0.0024 (0.8722 ± 0.0021), 0.9986 (0.9504), 0.9974 (0.9111), and 0.9977 (0.9074), respectively. Our findings demonstrate the superior performance of HTFSMMA over existing approaches. In addition, three case studies and the DeLong test have confirmed the effectiveness of the proposed method. These results collectively underscore the significance of HTFSMMA in facilitating the inference of associations between SMs and miRNAs.
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Biología Computacional , MicroARNs , MicroARNs/genética , Humanos , Biología Computacional/métodos , Algoritmos , Redes Neurales de la ComputaciónRESUMEN
Microbes in the human body are closely linked to many complex human diseases and are emerging as new drug targets. These microbes play a crucial role in drug development and disease treatment. Traditional methods of biological experiments are not only time-consuming but also costly. Using computational methods to predict microbe-drug associations can effectively complement biological experiments. In this experiment, we constructed heterogeneity networks for drugs, microbes, and diseases using multiple biomedical data sources. Then, we developed a model with matrix factorization and a three-layer heterogeneous network (MFTLHNMDA) to predict potential drug-microbe associations. The probability of microbe-drug association was obtained by a global network-based update algorithm. Finally, the performance of MFTLHNMDA was evaluated in the framework of leave-one-out cross-validation (LOOCV) and 5-fold cross-validation (5-fold CV). The results showed that our model performed better than six state-of-the-art methods that had AUC of 0.9396 and 0.9385 + /- 0.0000, respectively. This case study further confirms the effectiveness of MFTLHNMDA in identifying potential drug-microbe associations and new drug-microbe associations.
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Algoritmos , Biología Computacional , Humanos , Biología Computacional/métodosRESUMEN
The Boer goat is one of the top meat breeds in modern animal husbandry and has attracted widespread attention for its unique growth performance. However, the genetic basis of muscle development in the Boer goat remains obscure. In this study, we identified specific structural variants in the Boer goat based on genome-wide selection signals and analyzed the basis of the molecular heredity of related candidate genes in muscle development. A total of 9â¯959 autosomal copy number variations (CNVs) were identified through selection signal analysis in 127 goat genomes. Specifically, we confirmed that the highest signal CNV (HSV) was a chromosomal arrangement containing an approximately 1.11 Mb (CHIR17: 60062304-61171840 bp) duplicated fragment inserted in reverse orientation and a 5â¯362 bp deleted region (CHIR17:60145940-60151302 bp) with overlapping genes (e.g., ARHGAP10, NR3C2, EDNRA, PRMT9, and TMEM184C). The homozygous duplicated HSV genotype (+/+) was found in 96% of Boer goats but was not detected in Eurasian goats and was only detected in 4% of indigenous African goats. The expression network of three candidate genes ( ARHGAP10, NR3C2, and EDNRA) regulating dose transcription was constructed by RNA sequencing. Results indicated that these genes were involved in the proliferation and differentiation of skeletal muscle satellite cells (SMSCs) and their overexpression significantly increased the expression of SAA3. The HSV of the Boer goat contributed to superior skeletal muscle growth via the dose effects of overlapping genes.