Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 20 de 41
Filtrar
1.
J Gastroenterol Hepatol ; 39(5): 847-857, 2024 May.
Artículo en Inglés | MEDLINE | ID: mdl-38240493

RESUMEN

BACKGROUND: Patients with nonalcoholic fatty liver disease (NAFLD) are reported to have a higher risk of osteoporosis/fractures; however, the causal relationship remains unclear. METHODS: Publicly available genome-wide association studies (GWASs) were used for Mendelian randomization (MR) analysis. GWASs of NAFLD and fractures were obtained from the FinnGen Consortium. GWASs of bone mineral density (BMD) were derived from a meta-analysis. GWASs of obesity, diabetes, liver function, and serum lipid-related metrics were used to clarify whether the accompanying NAFLD symptoms contributed to fractures. Moreover, two additional GWASs of NAFLD were applied. RESULTS: A causal association was not observed between NAFLD and BMD using GWASs from the FinnGen Consortium. However, a causal relationship between NAFLD and femoral neck-BMD (FN-BMD), a suggestive relationship between fibrosis and FN-BMD, and between NAFLD and osteoporosis were identified in replication GWASs. Genetically proxied body mass index (BMI), high-density lipoprotein (HDL), and hip circumference increased the likelihood of lower limb fractures. The waist-to-hip ratio decreased, whereas glycated hemoglobin (HbA1C) and homeostasis model assessment of ß-cell function (HOMA-B) increased the risk of forearm fractures. Low-density lipoprotein (LDL) reduced, whereas HbA1C increased the incidence of femoral fractures. Alkaline phosphatase (ALP) raised the risk of foot fractures. However, after a multivariate MR analysis (adjusted for BMI), all the relationships became insignificant. CONCLUSIONS: NAFLD caused reduced BMD, and genetically predicted HDL, LDL, HbA1C, HOMA-B, ALP, hip circumference, and waist-to-hip ratio causally increased the risk of fractures. BMI may mediate causal relationships. Larger GWASs are required to verify this finding.


Asunto(s)
Índice de Masa Corporal , Densidad Ósea , Estudio de Asociación del Genoma Completo , Análisis de la Aleatorización Mendeliana , Enfermedad del Hígado Graso no Alcohólico , Osteoporosis , Enfermedad del Hígado Graso no Alcohólico/genética , Enfermedad del Hígado Graso no Alcohólico/complicaciones , Humanos , Densidad Ósea/genética , Osteoporosis/genética , Osteoporosis/etiología , Relación Cintura-Cadera , Fracturas Óseas/etiología , Fracturas Óseas/genética , Fracturas Óseas/epidemiología , Hemoglobina Glucada/metabolismo , Cuello Femoral/diagnóstico por imagen , Riesgo , Lipoproteínas HDL/sangre
2.
J Pharmacol Sci ; 154(2): 113-126, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-38246725

RESUMEN

Excessive bone resorption caused by upregulated osteoclast activity is a key factor in osteoporosis pathogenesis. Farrerol is a typical natural flavanone and exhibits various pharmacological actions. However, the role and mechanism of action of farrerol in osteoclast differentiation regulation remain unclear. This study aimed to evaluate the effects and mechanism of farrerol on the inhibition of osteoclastogenesis. Tartrate-resistant acid phosphatase staining, F-actin staining, and the pit formation assay were performed to examine the differentiation and functions of osteoclasts in vitro. The expression of proteins associated with the nuclear factor kappa B and mitogen-activated protein kinase signaling pathways was analyzed by western blotting. Dual X-ray absorptiometry, microcomputed tomography, and histopathological and immunohistochemical analyses were performed to determine the therapeutic effect of farrerol in vivo bone loss prevention. The effects of farrerol on osteoblastic bone formation were assessed using alkaline phosphatase, alizarin red S staining, and calcein-alizarin red S double labeling. Farrerol inhibited osteoclastogenesis and bone resorption in osteoclasts by suppressing nuclear factor kappa B signaling rather than mitogen-activated protein kinase signaling in vitro. Farrerol protected mice against ovariectomy-induced bone loss by inhibiting osteoclast-mediated bone resorption, instead of promoting osteoblast-mediated bone formation in vivo. The findings of the current study revealed that farrerol is a potential therapeutic agent for osteoporosis.


Asunto(s)
Antraquinonas , Resorción Ósea , Cromonas , Osteoporosis Posmenopáusica , Osteoporosis , Femenino , Humanos , Animales , Ratones , FN-kappa B , Osteoclastos , Osteoporosis Posmenopáusica/tratamiento farmacológico , Microtomografía por Rayos X , Transducción de Señal , Osteoporosis/tratamiento farmacológico , Proteínas Quinasas Activadas por Mitógenos , Resorción Ósea/tratamiento farmacológico
4.
Stem Cell Rev Rep ; 20(2): 447-454, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37993759

RESUMEN

Stem cell therapy holds great promise for future clinical practice for treatment of advanced liver diseases. However, the fate of stem cells after transplantation, including the distribution, viability, and the cell clearance, has not been fully elucidated. Herein, recent advances regarding the imaging tools for stem cells tracking mainly in chronic liver diseases with the advantages and disadvantages of each approach have been described. Magnetic resonance imaging is a promising clinical imaging modality due to non-radioactivity, excellent penetrability, and high spatial resolution. Fluorescence imaging and radionuclide imaging demonstrate relatively increased sensitivity, with the latter excelling in real-time monitoring. Reporter genes specialize in long-term tracing. Nevertheless, the disadvantages of low sensitivity, radiation, exogenous gene risk are inevitably present in each of these means, respectively. In this review, we aim to comprehensively evaluate the current state of methods for tracking of stem cell, highlighting their strengths and weaknesses, and providing insights into their future potential. Multimodality imaging strategies may overcome the inherent limitations of single-modality imaging by combining the strengths of different imaging techniques to provide more comprehensive information in the clinical setting.


Asunto(s)
Hepatopatías , Trasplante de Células Madre , Humanos , Trasplante de Células Madre/métodos , Genes Reporteros , Imagen por Resonancia Magnética/métodos , Hepatopatías/terapia
5.
Cancer Med ; 13(1): e6720, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38111983

RESUMEN

BACKGROUND: Although adjuvant chemotherapy (ACT) is widely used to treat patients with Stage II/III colorectal cancer (CRC), administering ACT to specific patients remains a challenge. The decision to ACT requires an accurate assessment of recurrence risk and absolute treatment benefit. However, the traditional TNM staging system does not accurately assess a patient's individual risk of recurrence. METHODS: To identify recurrence risk-related genetic factors for Stage II/III CRC patients after radical surgery, we conducted an analysis of whole-exome sequencing of 47 patients with Stage II/III CRC who underwent radical surgery at five institutions. Patients were grouped into non-recurrence group (NR, n = 24, recurrence-free survival [RFS] > 5 years) and recurrence group (R, n = 23, RFS <2 years). The TCGA-COAD/READ cohort was employed as the validation dataset. RESULTS: A recurrence-predictive model (G8plus score) based on eight gene (CUL9, PCDHA12, HECTD3, DCX, SMARCA2, FAM193A, AATK, and SORCS2) mutations and tumor mutation burden/microsatellite instability (TMB/MSI) status was constructed, with 97.87% accuracy in our data and 100% negative predictive value in the TCGA-COAD/READ cohort. For the TCGA-COAD/READ cohort, the G8plus-high group had better RFS (HR = 0.22, p = 0.024); the G8plus-high tumors had significantly more infiltrated immune cell types, higher tertiary lymphoid structure signature scores, and higher immunological signature scores. The G8plus score was also a predict biomarker for immunotherapeutic in advanced CRC in the PUCH cohort. CONCLUSIONS: In conclusion, the G8plus score is a powerful biomarker for predicting the risk of recurrence in patients with stage II/III CRC. It can be used to stratify patients who benefit from ACT and immunotherapy.


Asunto(s)
Neoplasias Colorrectales , Inestabilidad de Microsatélites , Humanos , Pronóstico , Neoplasias Colorrectales/terapia , Neoplasias Colorrectales/tratamiento farmacológico , Estadificación de Neoplasias , Biomarcadores de Tumor/genética
6.
RNA Biol ; 21(1): 1-15, 2024 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-38113132

RESUMEN

Nonalcoholic fatty liver disease (NAFLD), which affects approximately 25% of the global population, is an urgent health issue leading to various metabolic comorbidities. Circular RNAs (circRNAs), covalently closed RNA molecules, are characterized by ubiquity, diversity, stability, and conservatism. Indeed, they participate in various biological processes via distinct mechanisms that could modify the natural history of NAFLD. In this review, we briefly introduce the biogenesis, characteristics, and biological functions of circRNAs. Furthermore, we summarize circRNAs expression profiles in NAFLD by intersecting seven sequencing data sets and describe the cellular roles of circRNAs and their potential advantages as biomarkers of NAFLD. In addition, we emphatically discuss the exosomal non-coding RNA sorting mechanisms and possible functions in recipient cells. Finally, we extensively discuss the potential application of targeting disease-related circRNAs and competing endogenous RNA networks through gain-of-function and loss-of-function approaches in targeted therapy of NAFLD.


Asunto(s)
Enfermedad del Hígado Graso no Alcohólico , ARN Circular , Humanos , ARN Circular/genética , ARN Circular/metabolismo , Enfermedad del Hígado Graso no Alcohólico/genética , Relevancia Clínica , ARN/genética , ARN/metabolismo , Biomarcadores
7.
J Cancer Res Ther ; 19(6): 1544-1551, 2023 Dec 01.
Artículo en Inglés | MEDLINE | ID: mdl-38156920

RESUMEN

CONTEXT: Salinomycin (SAL) is a chemotherapeutic drug with anti-osteosarcoma efficacy, but its hydrophobic properties have hindered its application. Nanoparticles have been widely used as drug carriers to improve the solubility of hydrophobic drugs. The dodecapeptide GE11 has been shown to have great binding affinity to the epidermal growth factor receptor (EGFR), which is highly overexpressed in osteosarcoma. MATERIALS AND METHODS: We designed novel SAL-loaded GE11-conjugated polymer-lipid hybrid nanoparticles (GE11-NPs-SAL) to target osteosarcoma. The characterization and antitumor activity of GE11-NPs-SAL were evaluated both in vitro and in vivo. RESULTS: The results showed that GE11-NPs-SAL had a size of ~100 nm with a high encapsulation efficacy of ~80%. Compared with the non-targeted nanoparticles, GE11-NPs-SAL showed increased internalization in osteosarcoma cells and improved therapeutic efficacy in osteosarcoma both in vitro and in vivo. CONCLUSIONS: GE11-NPs-SAL is a promising treatment for osteosarcoma.


Asunto(s)
Antineoplásicos , Neoplasias Óseas , Nanopartículas , Osteosarcoma , Humanos , Antineoplásicos/uso terapéutico , Polímeros , Línea Celular Tumoral , Osteosarcoma/tratamiento farmacológico , Nanopartículas/química , Neoplasias Óseas/tratamiento farmacológico , Péptidos , Receptores ErbB/metabolismo , Lípidos
8.
Clin Case Rep ; 11(9): e7912, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37700775

RESUMEN

Key Clinical Message: We report a young man with isolated elevated AST. He had no other evidence of liver or other related diseases. All the tests and examination reports were negative. The final diagnosis of macro-AST was confirmed by PEG precipitation tests. Abstract: Elevated liver enzymes, such as alanine aminotransferase (ALT) and aspartate aminotransferase (AST), may commonly indicate liver injury. However, macro-AST is generally a benign condition that may be considered as pathologic by clinicians. A young man with isolated elevated AST for more than 10 years who have taken extensive tests and examinations was diagnosed with macro-AST in our article. Thus, in patients with isolated AST-elevation, polyethylene glycol (PEG) precipitation test was recommended to test whether macro-AST could be diagnosed.

9.
Colorectal Dis ; 25(10): 2087-2092, 2023 10.
Artículo en Inglés | MEDLINE | ID: mdl-37612783

RESUMEN

AIM: The aim of this study was to investigate the efficacy of multiple perineal perforator flaps in repairing deep perineal defects after pelvic exenteration for locally advanced or recurrent rectal cancer. METHOD: We investigated the outcomes of eight patients whose repairs involved a novel method of using an internal pudendal artery perforator (IPAP) flap combined with an inferior gluteal artery perforator (IGAP) flap. RESULTS: There were four male and four female patients with a mean age of 56 years (36-72 years). Bilateral IPAP flaps combined with bilateral IGAP flaps were used in five patients, unilateral IPAP flaps combined with bilateral IGAP flaps were used in two patients and bilateral IPAP flaps were used in one patient. There were no functional limitations in daily activities during the 6-month follow-up period. CONCLUSION: Our study showed that using multiple perineal perforator flaps combined with lining repair is feasible for repairing deep perineal defects in patients who have undergone rectal cancer surgery that includes pelvic exenteration.


Asunto(s)
Exenteración Pélvica , Colgajo Perforante , Procedimientos de Cirugía Plástica , Neoplasias del Recto , Humanos , Masculino , Femenino , Persona de Mediana Edad , Neoplasias del Recto/cirugía , Perineo/cirugía , Colgajo Perforante/cirugía
10.
Biomolecules ; 13(3)2023 03 20.
Artículo en Inglés | MEDLINE | ID: mdl-36979495

RESUMEN

Non-alcoholic fatty liver disease (NAFLD) is currently the most common cause of chronic liver disease worldwide. Early identification and prompt treatment are critical to optimize patient management and improve long-term prognosis. Long non-coding RNA (lncRNA) and circular RNA (circRNA) are recently emerging non-coding RNAs, and are highly stable and easily detected in the circulation, representing a promising non-invasive approach for predicting NAFLD. A literature search of the Pubmed, Embase, Web of Science, and Cochrane Library databases was performed and 36 eligible studies were retrieved, including 18 on NAFLD, 13 on nonalcoholic steatohepatitis (NASH), and 11 on fibrosis and/or cirrhosis. Dynamic changes in lncRNA expression were associated with the occurrence and progression of NAFLD, among which lncRNA NEAT1, MEG3, and MALAT1 exhibited great potential as biomarkers for NAFLD. Moreover, mitochondria-located circRNA SCAR can drive metaflammation and its inhibition might be a promising therapeutic target for NASH. In this systematic review, we highlight the great potential of lncRNA/circRNA for early diagnosis and progression assessment of NAFLD. To further verify their clinical value, large-cohort studies incorporating lncRNA and circRNA expression both in liver tissue and blood should be conducted. Additionally, detailed studies on the functional mechanisms of NEAT1, MEG3, and MALAT1 will be essential for elucidating their roles in diagnosing and treating NAFLD, NASH, and fibrosis.


Asunto(s)
Enfermedad del Hígado Graso no Alcohólico , ARN Largo no Codificante , Humanos , Enfermedad del Hígado Graso no Alcohólico/genética , Enfermedad del Hígado Graso no Alcohólico/diagnóstico , ARN Largo no Codificante/genética , ARN Largo no Codificante/metabolismo , ARN Circular/genética , Hígado/metabolismo , Fibrosis
11.
Int J Mol Sci ; 24(2)2023 Jan 09.
Artículo en Inglés | MEDLINE | ID: mdl-36674813

RESUMEN

Ectopic fat deposition in the liver, known as non-alcoholic fatty liver disease (NAFLD), affects up to 30% of the worldwide population. miRNA-122, the most abundant liver-specific miRNA, protects hepatic steatosis and inhibits cholesterol and fatty acid synthesis in NAFLD. Previously, we have shown that compared with its expression in healthy controls, miRNA-122 decreased in the liver tissue but gradually increased in the serum of patients with non-alcoholic fatty liver disease and non-alcoholic steatohepatitis, suggesting that miRNA-122 could have been transported to the serum. Here, we aimed to confirm and unravel the mechanism of transportation of miRNA-122 to extra-hepatocytes. Our findings showed a decrease in the intra-hepatocyte miRNA-122 and an increase in the extra-hepatocyte (medium level) miRNA-122, suggesting the miRNA-122 "escaped" from the intra-hepatocyte due to an increased extra-hepatocyte excretion. Using bioinformatics tools, we showed that miRNA-122 binds to circPI4KB, which was further validated by an RNA pull-down and luciferase reporter assay. The levels of circPI4KB in intra- and extra-hepatocytes corresponded to that of miRNA-122, and the overexpression of circPI4KB increased the miRNA-122 in extra-hepatocytes, consequently accomplishing a decreased protective role of miRNA-122 in inhibiting the lipid deposition. The present study provides a new explanation for the pathogenesis of the hepatic lipid deposition in NAFLD.


Asunto(s)
MicroARNs , Enfermedad del Hígado Graso no Alcohólico , Humanos , Enfermedad del Hígado Graso no Alcohólico/metabolismo , MicroARNs/genética , MicroARNs/metabolismo , ARN Circular/metabolismo , Metabolismo de los Lípidos/genética , Hígado/metabolismo , Hepatocitos/metabolismo , Lípidos
12.
Sci Data ; 10(1): 22, 2023 01 11.
Artículo en Inglés | MEDLINE | ID: mdl-36631464

RESUMEN

Takifugu species serve as a model system for evolutionary studies due to their compact genomes and diverse phenotypes. The ocellated puffer (Takifugu ocellatus), characterized by special colouration, is a scarce anadromous species in the genus Takifugu. As an ornamental and tasty fish species, T. ocellatus has moderate economic value. However, the available genomic resources for this pufferfish are still limited. Here, a chromosome-level reference genome, as well as two haploid genomes, was constructed by PacBio HiFi long sequencing and Hi-C technologies. The total length of the reference genome was 375.62 Mb with a contig N50 of 11.55 Mb. The assembled sequences were anchored to 22 chromosomes with an integration efficiency of 93.78%. Furthermore, 28,808 protein-coding genes were predicted. The haplotype-resolved reference genome of T. ocellatus provides a crucial resource for investigating the explosive speciation of the Takifugu genus, such as elucidating evolutionary histories, determining the genetic basis of trait evolution, and supporting future conservation efforts.


Asunto(s)
Cromosomas , Genoma , Takifugu , Animales , Cromosomas/genética , Haplotipos , Anotación de Secuencia Molecular , Filogenia , Takifugu/genética
13.
J Transl Med ; 21(1): 63, 2023 01 30.
Artículo en Inglés | MEDLINE | ID: mdl-36717891

RESUMEN

BACKGROUND: Circulating tumor DNA (ctDNA) detection following curative-intent surgery could directly reflect the presence of minimal residual disease, the ultimate cause of clinical recurrence. However, ctDNA is not postoperatively detected in ≥ 50% of patients with stage I-III colorectal cancer (CRC) who ultimately recur. Herein we sought to improve recurrence risk prediction by combining ctDNA with clinicopathological risk factors in stage I-III CRC. METHODS: Two independent cohorts, both consisting of early-stage CRC patients who underwent curative surgery, were included: (i) the discovery cohort (N = 124) with tumor tissues and postoperative plasmas for ctDNA determination; and (ii) the external validation cohort (N = 125) with available ctDNA results. In the discovery cohort, somatic variations in tumor tissues and plasmas were determined via a 733-gene and 127-gene next-generation sequencing panel, respectively. RESULTS: In the discovery cohort, 17 of 108 (15.7%) patients had detectable ctDNA. ctDNA-positive patients had a significantly high recurrence rate (76.5% vs. 16.5%, P < 0.001) and short recurrence-free survival (RFS; P < 0.001) versus ctDNA-negative patients. In addition to ctDNA status, the univariate Cox model identified pathologic stage, lymphovascular invasion, nerve invasion, and preoperative carcinoembryonic antigen level associated with RFS. We combined the ctDNA and clinicopathological risk factors (CTCP) to construct a model for recurrence prediction. A significantly higher recurrence rate (64.7% vs. 8.1%, P < 0.001) and worse RFS (P < 0.001) were seen in the high-risk patients classified by the CTCP model versus those in the low-risk patients. Receiver operating characteristic analysis demonstrated that the CTCP model outperformed ctDNA alone at recurrence prediction, which increased the sensitivity of 2 year RFS from 49.6% by ctDNA alone to 87.5%. Harrell's concordance index, calibration curve, and decision curve analysis also suggested that the CTCP model had good discrimination, consistency, and clinical utility. These results were reproduced in the validation cohort. CONCLUSION: Combining postoperative ctDNA and clinical risk may better predict recurrence than ctDNA alone for developing a personalized postoperative management strategy for CRC.


Asunto(s)
ADN Tumoral Circulante , Neoplasias Colorrectales , Humanos , ADN Tumoral Circulante/genética , Neoplasias Colorrectales/genética , Neoplasias Colorrectales/cirugía , Neoplasias Colorrectales/patología , Biomarcadores de Tumor/genética , Curva ROC , Factores de Riesgo , Recurrencia Local de Neoplasia/genética , Recurrencia Local de Neoplasia/patología
14.
Dig Dis Sci ; 68(4): 1605-1614, 2023 04.
Artículo en Inglés | MEDLINE | ID: mdl-36227429

RESUMEN

BACKGROUND: The association between hepatitis B and concomitant diseases, such as fatty liver, T2DM, MetS, and Hp infection, remains unclear. AIM: The present study was to illustrate the association and explore the co-contribution on abnormal transaminase and progression of liver stiffness. METHODS: A total of 95,998 participants underwent HBsAg screening in West China Hospital from 2014 to 2017. Multivariable logistic regression was used to determine the adjusted odds ratios. RESULTS: The prevalence of HBsAg-positive rate was 8.30% of our included study population. HBsAg positive was associated with negative risk of fatty liver (odds ratio [OR] 0.71, 95% confidence interval [CI] 0.65-0.78, p < 0.001) and MetS (OR 0.74, 95% CI 0.67-0.84, p < 0.001), and with positive risk of Hp infection (OR 1.09, 95% CI 1.02-1.17, p = 0.012) and T2DM (OR 1.18, 95% CI 1.01-1.40, p = 0.043). Besides, HBsAg-positive patients with T2DM had higher risk of elevated ALT (OR 2.09, 95% CI 1.69-2.83, p < 0.001 vs OR 1.59, 95% CI 1.51-1.68, p < 0.001), AST (OR 2.69, 95% CI 1.98-3.65, p < 0.001 vs OR 1.89, 95% CI 1.76-2.02, p < 0.001) than HBV alone. In addition to HBV, T2DM also can increase the risk of liver fibrosis (OR 3.23, 95% CI 1.35-7.71, p = 0.008) and cirrhosis (OR 4.31, 95% CI 1.41-13.20, p = 0.010). CONCLUSION: Hepatitis B patients have a lower risk of fatty liver and MetS, and a higher risk of T2DM and Hp infection. Besides, T2DM might be possibly associated with abnormal liver transaminase and fibrosis progression in HBsAg-positive patients.


Asunto(s)
Diabetes Mellitus Tipo 2 , Hígado Graso , Hepatitis B , Humanos , Virus de la Hepatitis B , Antígenos de Superficie de la Hepatitis B , Hepatitis B/complicaciones , Hepatitis B/epidemiología , Cirrosis Hepática/diagnóstico , Cirrosis Hepática/epidemiología , Cirrosis Hepática/complicaciones , Hígado Graso/complicaciones , Alanina Transaminasa , Diabetes Mellitus Tipo 2/complicaciones
15.
Gene ; 849: 146910, 2023 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-36167181

RESUMEN

Takifugu genus has been brought to the fore in scientific and practical research due to its compact genome, explosive speciation progress and economic value. Here we updated the chromosome-level genome of Takifugu bimaculatus by an ultra-high-density linkage map, a classic and accurate way of chromosome assembly. The map constituted a robust assembly frame, with 92.2% (372.77 Mb) of the draft genome cumulatively placed. With intraspecies and interspecies comparative genomic analysis, we developed a criterion to quantify the differences between assemblies and established a novel way to integrate information from multiple assemblies. The integrated assembly rectified potential mis-assemblies, greatly improving the genome contiguity and correctness. Our results rendered profound information on the genetic recombination of T. bimaculatus and provided new insights into effective genome assembly. The consolidated assembly will be a contributory tool of T. bimaculatus and broadly across the Takifugu by providing a convincing reference for genomic research.


Asunto(s)
Genoma , Takifugu , Animales , Takifugu/genética , Mapeo Cromosómico , Genoma/genética , Genómica , Recombinación Genética , Ligamiento Genético
16.
Asian J Surg ; 46(2): 841-849, 2023 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-36123208

RESUMEN

BACKGROUND: Pseudolymphoma is a rare, benign, nonspecific condition that forms a mass-like lesion characterized by the proliferation of non-neoplastic lymphocytes. Lacking of specific clinical symptoms, serological markers, and imaging features, the diagnosis is difficult. We reporte five cases of hepatic pseudolymphoma and provide a systematic review of existing literatures to improve our understanding of this rare liver disease. METHODS: We followed-up five cases of hepatic pseudolymphoma in West China Hospital from January 2002 to January 2022. We also summarized the cases of hepatic pseudolymphoma from January 1981 to December 2021 through the PubMed database and comprehensively analyzed the characteristics of the cases. RESULTS: The pathologic features of the five cases were characterized by benign lymphoid tissue hyperplasia, lymphoid follicle formation, and a polarized germinal center. Immunohistochemistry, in situ hybridization, and gene rearrangement revealed non-malignant lymphoma. Besides, a total of 116 cases have been reported in the PubMed database from 1981 to 2021. The incidence of hepatic pseudolymphoma is higher in middle-aged and elderly women and has been reported more frequently in Asia. All cases were pathologically diagnosed, among which 85.95% of the patients were treated by surgery. CONCLUSIONS: Hepatic pseudolymphoma is an extremely rare benign disease, mainly in middle-aged and elderly women. Without distinctive clinical and imaging characteristics, pathological diagnosis is the highly reliable method at present. Thus, in the absence of risk factors for a primary liver tumor or metastatic tumor in middle-aged and elderly women, the possibility of pseudolymphoma should be considered to avoid extensive treatments.


Asunto(s)
Hepatopatías , Neoplasias Hepáticas , Seudolinfoma , Persona de Mediana Edad , Anciano , Humanos , Femenino , Seudolinfoma/diagnóstico , Seudolinfoma/patología , Hepatopatías/cirugía , Neoplasias Hepáticas/patología , Inmunohistoquímica , Diagnóstico Diferencial
17.
Clin Case Rep ; 10(11): e6513, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-36381061

RESUMEN

Wilson's disease is an autosomal recessive inherited disease with congenital copper metabolism disorder, characterized by decreased ceruloplasmin and increased urine copper, which can involve multiple organs. This case was complicated by iron overload, which is of great value in differentiating hereditary hemochromatism.

18.
Front Pharmacol ; 13: 952950, 2022.
Artículo en Inglés | MEDLINE | ID: mdl-36238561

RESUMEN

Osteoarthritis (OA) is a common degenerative joint disease. Effective drugs that can halt or decelerate osteoarthritis progression are still lacking. Omaveloxolone is a semisynthetic oleanane triterpenoid exerting antioxidative and anti-inflammatory effects. The present study aims to determine whether omaveloxolone has a therapeutic effect on OA. Chondrocytes were treated with interleukin (IL)-1ß to establish an OA cell model in vitro. Indicators of cell viability, oxidative stress, inflammation, cell apoptosis and extracellular matrix (ECM) degradation were investigated. Proteins related to the Nuclear factor erythroid derived-2-related factor 2 (Nrf2)/antioxidant response element (ARE) and nuclear factor kappa-light-chain-enhancer of activated B cells (NF-κB) signalling pathways were assessed using Western blotting. A destabilized medial meniscus surgery-induced OA rat model was used in vivo. Gait analysis, microcomputed tomography analysis, and histopathological and immunohistochemical analyses were performed to determine the therapeutic effect of omaveloxolone on attenuating osteoarthritis in vivo. The results showed that omaveloxolone exerts antioxidative, anti-inflammatory, antiapoptotic and anti-ECM degradation effects via activation of the Nrf2/ARE signalling pathway and inhibition of the NF-κB signalling pathway in chondrocytes in vitro and attenuates OA progression in vivo, suggesting that omaveloxolone may be a potential therapeutic agent for OA.

19.
Int J Biol Macromol ; 216: 65-74, 2022 Sep 01.
Artículo en Inglés | MEDLINE | ID: mdl-35788001

RESUMEN

In recent years, the serious influence of infectious diseases on public health and economy development has raised global awareness of the importance of medical textiles for preventing and curing injuries and diseases. The application of biomass molecules is a feasible and sustainable approach to design multipurpose medical materials. In this work, a novel cotton fiber with antibacterial, antioxidant, and drug delivery properties was prepared using gallic acid functionalized polylysine (GA-PL). GA-PL was synthesized by immobilizing GA onto PL using the carbodiimide coupling method. The content of GA immobilized onto PL was 117.9 mg/g. The as-prepared GA-PL was grafted onto oxidized cotton by means of the Schiff base reaction between the amino groups of GA-PL and the aldehyde groups of oxidized cotton. The content of GA-PL grafted onto cotton fiber was 205.1 mg/g. GA-PL grafted cotton fiber exhibited not only durable antibacterial and antioxidant activities but also good drug loading and releasing properties for acetylsalicylic acid. This work presents a novel, cleaner, and sustainable approach to prepare medical cotton fibers with bioactive and drug delivery properties.


Asunto(s)
Fibra de Algodón , Ácido Gálico , Antibacterianos/farmacología , Antioxidantes/farmacología , Polilisina
20.
Diagnostics (Basel) ; 12(6)2022 Jun 07.
Artículo en Inglés | MEDLINE | ID: mdl-35741222

RESUMEN

Background: In patients with metabolic-associated fatty liver disease (MAFLD), hepatic steatosis is the first step of diagnosis, and it is a risk predictor that independently predicts insulin resistance, cardiovascular risk, and mortality. Urine biomarkers have the advantage of being less complex, with a lower dynamic range and fewer technical challenges, in comparison to blood biomarkers. Methods: Hepatic steatosis was measured by magnetic resonance imaging (MRI), which measured the proton density fat fraction (MRI-PDFF). Mild hepatic steatosis was defined as MRI-PDFF 5−10% and severe hepatic steatosis was defined as MRI-PDFF > 10%. Results: MAFLD patients with any kidney diseases were excluded. There were 53 proteins identified by mass spectrometry with significantly different expressions among the healthy control, mild steatosis, and severe steatosis patients. Gene Ontology (GO) and the Kyoto Encyclopedia of Genes and Genomes (KEGG) analyses of these significantly changed urinary molecular features correlated with the liver, resulting in the dysregulation of carbohydrate derivative/catabolic/glycosaminoglycan/metabolic processes, insulin-like growth factor receptor levels, inflammatory responses, the PI3K−Akt signaling pathway, and cholesterol metabolism. Urine alpha-1-acid glycoprotein 1 (ORM1) and ceruloplasmin showed the most significant correlation with the clinical parameters of MAFLD status, including liver fat content, fibrosis, ALT, triglycerides, glucose, HOMA-IR, and C-reactive protein. According to ELISA and western blot (30 urine samples, normalized to urine creatinine), ceruloplasmin (ROC 0.78, p = 0.034) and ORM1 (ROC 0.87, p = 0.005) showed moderate diagnostic accuracy in distinguishing mild steatosis from healthy controls. Ceruloplasmin (ROC 0.79, p = 0.028) and ORM1 (ROC 0.81, p = 0.019) also showed moderate diagnostic accuracy in distinguishing severe steatosis from mild steatosis. Conclusions: Ceruloplasmin and ORM1 are potential biomarkers in distinguishing mild and severe steatosis in MAFLD patients.

SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...