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1.
Int J Food Microbiol ; 421: 110800, 2024 Aug 16.
Artículo en Inglés | MEDLINE | ID: mdl-38878705

RESUMEN

To our knowledge, this study is the first to elucidate the bactericidal efficacy of unpeeled carrots (hereafter referred to as carrots) pretreated with Ultra Violet-C (UV-C) against subsequent contamination with Listeria monocytogenes. Carrots pretreated with UV-C (240 mJ/cm2) exhibited a significant antilisterial effect within 2 h. In fact, the population of UV-C-pretreated carrots decreased from 7.94 log CFU/cm2 to levels below the limit of detection (LOD; <1.65 log CFU/cm2) within 24 h. For carrots that were not pretreated with UV-C, 3-4 log reductions were found after 24 h. Carrots pretreated with UV-C exhibited antimicrobial activity against another gram-positive pathogen, Staphylococcus aureus, but not against the gram-negative pathogens, E. coli O157:H7 and Salmonella enterica. Pretreatment with UV-C created a lasting antimicrobial effect as introducing L. monocytogenes on carrots, 72 h post-UV-C treatment, still maintained the antilisterial effect. Notably, all UV-C doses in the range of 48-240 mJ/cm2 induced a lasting antilisterial effect. The bactericidal effects against L. monocytogenes were confirmed in three varieties of washed and unwashed carrots (Danvers, Nantes, and Chantenay). Fluorescence microscopy confirmed the bactericidal effect of UV-C-pretreated carrots on the survival of L. monocytogenes. Conclusively, pretreating carrots with UV-C can reduce the population of L. monocytogenes to levels below the LOD and may further prevent pathogen growth during cold storage. Additional studies are necessary to discern the mechanism underlying the bactericidal efficacy of UV-C-pretreated carrots.


Asunto(s)
Daucus carota , Listeria monocytogenes , Rayos Ultravioleta , Listeria monocytogenes/efectos de los fármacos , Listeria monocytogenes/crecimiento & desarrollo , Listeria monocytogenes/efectos de la radiación , Daucus carota/microbiología , Microbiología de Alimentos , Staphylococcus aureus/efectos de los fármacos , Contaminación de Alimentos/prevención & control , Contaminación de Alimentos/análisis , Recuento de Colonia Microbiana , Escherichia coli O157/efectos de los fármacos , Escherichia coli O157/efectos de la radiación , Escherichia coli O157/crecimiento & desarrollo , Salmonella enterica/efectos de los fármacos , Salmonella enterica/efectos de la radiación , Salmonella enterica/crecimiento & desarrollo
2.
World J Clin Cases ; 12(5): 931-941, 2024 Feb 16.
Artículo en Inglés | MEDLINE | ID: mdl-38414613

RESUMEN

BACKGROUND: There are limited data on the use of glucose transport protein 1 (GLUT-1) expression as a biomarker for predicting lymph node metastasis in patients with colorectal cancer. GLUT-1 and GLUT-3, hexokinase (HK)-II, and hypoxia-induced factor (HIF)-1 expressions may be useful biomarkers for detecting primary tumors and lymph node metastasis when combined with fluorodeoxyglucose (FDG) uptake on positron emission tomography/computed tomography (PET/CT). AIM: To evaluate GLUT-1, GLUT-3, HK-II, and HIF-1 expressions as biomarkers for detecting primary tumors and lymph node metastasis with 18F-FDG-PET/CT. METHODS: This retrospective study included 169 patients with colorectal cancer who underwent colectomy and preoperative 18F-FDG-PET/CT at Chungbuk National University Hospital between January 2009 and May 2012. Two tissue cores from the central and peripheral areas of the tumors were obtained and were examined by a dedicated pathologist, and the expressions of GLUT-1, GLUT-3, HK-II, and HIF-1 were determined using immunohistochemical staining. We analyzed the correlations among their expressions, various clinicopathological factors, and the maximum standardized uptake value (SUVmax) of PET/CT. RESULTS: GLUT-1 was found at the center or periphery of the tumors in 109 (64.5%) of the 169 patients. GLUT-1 positivity was significantly correlated with the SUVmax of the primary tumor and lymph nodes, regardless of the biopsy site (tumor center, P < 0.001 and P = 0.012; tumor periphery, P = 0.030 and P = 0.010, respectively). GLUT-1 positivity and negativity were associated with higher and lower sensitivities of PET/CT, respectively, for the detection of lymph node metastasis, regardless of the biopsy site. GLUT3, HK-II, and HIF-1 expressions were not significantly correlated with the SUVmax of the primary tumor and lymph nodes. CONCLUSION: GLUT-1 expression was significantly correlated with the SUVmax of 18F-FDG-PET/CT for primary tumors and lymph nodes. Clinicians should consider GLUT-1 expression in preoperative endoscopic biopsy in interpreting PET/CT findings.

3.
Thorac Cancer ; 15(8): 672-677, 2024 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-38352989

RESUMEN

Cancer-associated dermatomyositis (CAD), a paraneoplastic syndrome characterized by dermatomyositis (DM), frequently presents in association with small cell lung cancer (SCLC). Although the advent of immune checkpoint inhibitors (ICIs) has revolutionized cancer treatment, their efficacy and safety in patients with concurrent autoimmune diseases (AD) and malignancies remains uncertain. Several studies have suggested the safe administration of ICIs in patients with AD, indicating that successful cancer therapy can alleviate CAD symptoms. Conversely, other studies have raised concerns about the potential for ICIs to exacerbate AD flares or immune-related adverse events (irAEs). A comparative analysis of two cases from our institution emphasizes the variability in ICI responses among SCLC patients with CAD. One patient, previously reported as a case study, exhibited significant clinical improvement in DM symptoms after ICI administration, whereas the other developed severe exfoliative skin changes and experienced an unfavorable prognosis. This variability emphasizes the need for careful patient selection and close monitoring during ICI treatment. We hypothesized that overweight or obese individuals and those with severe initial skin lesions and elevated lactate dehydrogenase levels are more susceptible to developing irAEs following ICI therapy. Therefore, caution is advised when considering immunotherapy in these patients.


Asunto(s)
Antineoplásicos Inmunológicos , Enfermedades Autoinmunes , Dermatomiositis , Neoplasias Pulmonares , Carcinoma Pulmonar de Células Pequeñas , Humanos , Neoplasias Pulmonares/complicaciones , Neoplasias Pulmonares/tratamiento farmacológico , Carcinoma Pulmonar de Células Pequeñas/complicaciones , Carcinoma Pulmonar de Células Pequeñas/tratamiento farmacológico , Dermatomiositis/complicaciones , Dermatomiositis/tratamiento farmacológico , Antineoplásicos Inmunológicos/efectos adversos , Estudios Retrospectivos , Enfermedades Autoinmunes/tratamiento farmacológico , Inmunoterapia/efectos adversos
4.
J Cosmet Dermatol ; 23(2): 529-542, 2024 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-37675655

RESUMEN

BACKGROUND: Natural components that can exert a wide range of anti-hair loss activity with fewer side effects are in high demand. The objective of this study was to investigate the anti-hair loss potential of Silybum marianum flower extract (SMFE) in vitro and in vivo. METHODS: The effect of SMFE on dermal papilla cells was evaluated by measuring cell proliferation and VEGF production in hair follicle dermal papilla cells (HFDPCs). In addition, to confirm the effect of SMFE on dermal papilla senescence, SA-ß-gal staining and senescence associated secretory phenotype (SASP) production such as IL-6 was observed in both replicative and hydrogen peroxide (H2 O2 )-induced senescence models. In a clinical study, hair growth was determined by reconstitution analysis after shaving the hair of the clinical subject's scalp and hair area. RESULTS: SMFE increased the proliferation and VEGF production of HFDPCs. It also suppressed cellular senescence of HFDPCs and IL-6 production in replicative senescence and oxidative stress-induced senescence models. The hair density and total hair count at 16 and 24 weeks after using hair shampoo containing SMFE were significantly increased compared with those of the placebo group. CONCLUSION: SMFE has the potential to be used as a natural ingredient for alleviating hair loss.


Asunto(s)
Interleucina-6 , Silybum marianum , Humanos , Factor A de Crecimiento Endotelial Vascular/genética , Folículo Piloso , Alopecia/tratamiento farmacológico , Flores , Células Cultivadas
6.
J Cell Physiol ; 238(9): 2076-2089, 2023 09.
Artículo en Inglés | MEDLINE | ID: mdl-37672477

RESUMEN

Vasomotion is the oscillation of vascular tone which gives rise to flow motion of blood into an organ. As is well known, spontaneous contractile organs such as heart, GI, and genitourinary tract produce rhythmic contraction. It imposes or removes pressure on their vessels alternatively for exchange of many substances. It was first described over 150 years ago, however the physiological mechanism and pathophysiological implications are not well understood. This study aimed to elucidate underlying mechanisms and physiological function of vasomotion in human arteries. Conventional contractile force measurement, immunohistochemistry, and Western blot analysis were employed to study human left gastric artery (HLGA) and uterine arteries (HUA). RESULTS: Circular muscle of HLGA and/or HUA produced sustained tonic contraction by high K+ (50 mM) which was blocked by 2 µM nifedipine. Stepwise stretch and high K+ produced nerve-independent spontaneous contraction (vasomotion) (around 45% of tested tissues). Vasomotion was also produced by application of BayK 8644, 5-HT, prostagrandins, oxytocin. It was blocked by nifedipine (2 µM) and blockers of intracellular Ca2+ stores. Inhibitors of Ca2+ -activated Cl- channels (DIDS and/or niflumic acid) and ATP-sensitive K+ (KATP ) channels inhibited vasomotion reversibly. Metabolic inhibition by sodium cyanide (NaCN) and several neuropeptides also regulated vasomotion in KATP channel-sensitive and -insensitive manner. Finally, we identified TMEM16A Ca2+ -activated Cl- channels and subunits of KATP channels (Kir 6.1/6.2 and sulfonylurea receptor 2B [SUR2B]), and c-Kit positivity by Western blot analysis. We conclude that vasomotion is sensitive to TMEM16A Ca2+ -activated Cl- channels and metabolic changes in human gastric and uterine arteries. Vasomotion might play an important role in the regulation of microcirculation dynamics even in pacemaker-related autonomic contractile organs in humans.


Asunto(s)
Arterias , Canales Iónicos , Contracción Isométrica , Humanos , Canales Iónicos/fisiología , Nifedipino/farmacología , Arteria Uterina , Arterias/fisiología
7.
Mol Psychiatry ; 28(10): 4474-4484, 2023 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-37648779

RESUMEN

Mitochondrial dysfunction has been implicated in Parkinson's Disease (PD) progression; however, the mitochondrial factors underlying the development of PD symptoms remain unclear. One candidate is CR6-interacting factor1 (CRIF1), which controls translation and membrane insertion of 13 mitochondrial proteins involved in oxidative phosphorylation. Here, we found that CRIF1 mRNA and protein expression were significantly reduced in postmortem brains of elderly PD patients compared to normal controls. To evaluate the effect of Crif1 deficiency, we produced mice lacking the Crif1 gene in dopaminergic neurons (DAT-CRIF1-KO mice). From 5 weeks of age, DAT-CRIF1-KO mice began to show decreased dopamine production with progressive neuronal degeneration in the nigral area. At ~10 weeks of age, they developed PD-like behavioral deficits, including gait abnormalities, rigidity, and resting tremor. L-DOPA, a medication used to treat PD, ameliorated these defects at an early stage, although it was ineffective in older mice. Taken together, the observation that CRIF1 expression is reduced in human PD brains and deletion of CRIF1 in dopaminergic neurons leads to early-onset PD with stepwise PD progression support the conclusion that CRIF1-mediated mitochondrial function is important for the survival of dopaminergic neurons.


Asunto(s)
Neuronas Dopaminérgicas , Enfermedad de Parkinson , Humanos , Ratones , Animales , Anciano , Neuronas Dopaminérgicas/metabolismo , Enfermedad de Parkinson/genética , Levodopa/farmacología , Dopamina/metabolismo , Encéfalo/metabolismo , Proteínas de Ciclo Celular/genética
8.
Food Microbiol ; 114: 104307, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37290864

RESUMEN

Button mushrooms (Agaricus bisporus), are one of the most widely consumed mushrooms in the world. However, changes within its microbial community as it relates to the use of different raw materials and cultivation methods, as well as potential points of microbial contamination throughout the production process have not been investigated extensively. In the present study, button mushroom cultivation was investigated in each of the four stages (raw materials, composting (phase I, Ⅱ, and Ⅲ), casing, and harvesting), and samples (n = 186) from mushrooms and their related environments were collected from four distinct mushroom-growing farms (A-D) in Korea. Shifts within the bacterial consortium during mushroom production were characterized with 16 S rRNA amplicon sequencing. The succession of bacterial communities on each farm was dependent on the raw material incorporated, aeration, and the farm environment. The dominant phyla of the compost stack at the four farms were Pseudomonadota (56.7%) in farm A, Pseudomonadota (43.3%) in farm B, Bacteroidota (46.0%) in farm C, and Bacillota (62.8%) in farm D. During the Phase Ⅰ, highly heat-resistant microbes, such as those from the phylum Deinococcota (0.6-65.5%) and the families Bacillaceae (1.7-36.3%), Thermaceae (0.1-65.5%), and Limnochordaceae (0.3-30.5%) greatly proliferated. The microbial diversity within compost samples exhibited a marked decline as a result of the proliferation of thermophilic bacteria. In the spawning step, there were considerable increases in Xanthomonadaceae in the pasteurized composts of farms C and D - both of which employed an aeration system. In the harvesting phase, beta diversity correlated strongly between the casing soil layer and pre-harvest mushrooms, as well as between gloves and packaged mushrooms. The results suggest that gloves may be a major source of cross-contamination for packaged mushrooms, highlighting the need for enhanced hygienic practices during the harvesting phase to ensure product safety. These findings contribute to the current understanding of the influence of environmental and adjacent microbiomes on mushroom products to benefit the mushroom industry and relevant stakeholders by ensuring quality production.


Asunto(s)
Agaricus , Microbiota , Humanos , Agaricus/genética , Microbiota/genética , Bacterias/genética , Secuenciación de Nucleótidos de Alto Rendimiento
9.
Small ; 19(38): e2301744, 2023 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-37231559

RESUMEN

Application of Si anodes is hindered by severe capacity fading due to pulverization of Si particles during the large volume changes of Si during charge/discharge and repeated formation of the solid-electrolyte interphase. To address these issues, considerable efforts have been devoted to the development of Si composites with conductive carbons (Si/C composites). However, Si/C composites with high C content inevitably show low volumetric capacity because of low electrode density. For practical applications, the volumetric capacity of a Si/C composite electrode is more important than gravimetric capacity, but volumetric capacity in pressed electrodes is rarely reported. Herein, a novel synthesis strategy is demonstrate for a compact Si nanoparticle/graphene microspherical assembly with interfacial stability and mechanical strength achieved by consecutively formed chemical bonds using 3-aminopropyltriethoxysilane and sucrose. The unpressed electrode (density: 0.71 g cm-3 ) shows a reversible specific capacity of 1470 mAh g-1 with a high initial coulombic efficiency of 83.7% at a current density of 1 C-rate. The corresponding pressed electrode (density: 1.32 g cm-3 ) exhibits high reversible volumetric capacity of 1405 mAh cm-3 and gravimetric capacity of 1520 mAh g-1 with a high initial coulombic efficiency of 80.4% and excellent cycling stability of 83% over 100 cycles at 1 C-rate.

10.
Chem Asian J ; 18(11): e202300280, 2023 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-37057383

RESUMEN

Herein, we report the in-situ synthesis of amorphous GeSe/CNT composite via defective-carbon-mediated chemical bonding for ultrastable Na-ion storage. Structural defects in CNTs play a crucial role in the chemical bonding and bonding strength in GeSe/CNTs composites. Specifically, the bonding strength tends to increase with increasing defect concentrations of CNTs. Remarkably, the strong chemical bonding between GeSe and CNTs significantly weakens Ge-Se bonds and promotes amorphization of GeSe, thus facilitating a reversible conversion reaction and enhancing Na-ion diffusion. Consequently, GeSe/CNTs composite exhibits outstanding cyclability of 87.9% even after 1000 cycles at 1 A g-1 and a high-rate capability of 288.3 mA h g-1 at 10 A g-1 . Our work presents a promising approach for the amorphization of electrode materials enabled by the defective-carbon-mediated strong chemical bonding for Li-, Na-, and K-ion batteries.

11.
Food Sci Biotechnol ; 32(1): 111-120, 2023 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-36606091

RESUMEN

Fresh food products can be contaminated with pathogenic bacteria in various agricultural environments. Potting soil is sterilized by heat sterilization and then reused. This study evaluated the effects of three sterilization methods (non-sterilized, pasteurized, and sterilized) on the survival of pathogenic bacteria in potting soil during storage for 60 days at 5, 15, 25, and 35 °C. The reduction in Escherichia coli O157:H7, Salmonella Typhimurium, and Staphylococcus aureus in potting soil was higher at higher temperatures (25 and 35 °C) than at lower temperatures (5 and 15 °C). The population of pathogenic bacteria in pasteurized and sterilized potting soil was reduced below the detectable levels within 30 days at 35 °C. In contrast, the population of Bacillus cereus did not change in potting soil during storage for 60 days at all temperatures. These results indicate that sterilization and storage temperature of potting soil are critical factors influencing the survival of pathogenic bacteria.

12.
Exp Mol Med ; 54(11): 1901-1912, 2022 11.
Artículo en Inglés | MEDLINE | ID: mdl-36352257

RESUMEN

Although many cohort studies have reported that long-term exposure to particulate matter (PM) can cause lung cancer, the molecular mechanisms underlying the PM-induced increase in cancer metastasis remain unclear. To determine whether PM contributes to cancer metastasis, cancer cells were cultured with conditioned medium from PM-treated THP1 cells, and the migration ability of the treated cancer cells was assessed. The key molecules involved were identified using RNA-seq analysis. In addition, metastatic ability was analyzed in vivo by injection of cancer cells into the tail vein and intratracheal injection of PM into the lungs of C57BL/6 mice. We found that PM enhances the expression of heparin-binding EGF-like growth factor (HBEGF) in macrophages, which induces epithelial-to-mesenchymal transition (EMT) in cancer cells, thereby increasing metastasis. Macrophage stimulation by PM results in activation and subsequent nuclear translocation of the aryl hydrocarbon receptor and upregulation of HBEGF. Secreted HBEGF activates EGFR on the cancer cell surface to induce EMT, resulting in increased migration and invasion in vitro and increased metastasis in vivo. Therefore, our study reveals a critical PM-macrophage-cancer cell signaling axis mediating EMT and metastasis and provides an effective therapeutic approach for PM-induced malignancy.


Asunto(s)
Transición Epitelial-Mesenquimal , Factor de Crecimiento Similar a EGF de Unión a Heparina , Macrófagos , Metástasis de la Neoplasia , Material Particulado , Animales , Ratones , Línea Celular Tumoral , Factor de Crecimiento Similar a EGF de Unión a Heparina/metabolismo , Macrófagos/metabolismo , Ratones Endogámicos C57BL , Material Particulado/efectos adversos
13.
Biomolecules ; 12(9)2022 08 24.
Artículo en Inglés | MEDLINE | ID: mdl-36139009

RESUMEN

Extracellular vesicles (EVs), which are nanosized membranous particles secreted from both prokaryotic and eukaryotic cells, can deliver various biological molecules, such as nucleic acids, proteins, and lipids, into recipient cells. However, contrary to what is known about eukaryotic EVs, whether bacterial EVs (bEVs) can be used as transporters for bioactive molecules is becoming a hot area of research. In this study, we electroporated enhanced green fluorescent protein (EGFP) genes and precursor microRNA of Cel-miR-39 (pre-Cel-miR-39) from isolated bEVs of Escherichia coli and Lactobacillus reuteri. The EGFP plasmid, synthetic EGFP RNA, and pre-Cel-miR-39 were successfully delivered into the murine microglial BV2 cells via bEVs. PCR and confocal microscopy analysis confirmed the transfer of the EGFP plasmid and RNA. The bEV-delivered exogenous pre-Cel-miR-39 was further processed into the mature form of Cel-miR-39; its incorporation into Ago2-a major component of the RNA-induced silencing complex-was assessed using RNA-immunoprecipitation-PCR. Taken together, bEVs can be used as vehicles to deliver genetic materials and for novel biotechnological applications, such as gene transfer and mRNA vaccines.


Asunto(s)
Vesículas Extracelulares , MicroARNs , Animales , Vesículas Extracelulares/genética , Vesículas Extracelulares/metabolismo , Técnicas de Transferencia de Gen , Lípidos , Ratones , MicroARNs/genética , MicroARNs/metabolismo , Complejo Silenciador Inducido por ARN/genética , Complejo Silenciador Inducido por ARN/metabolismo
14.
Thorac Cancer ; 13(19): 2808-2811, 2022 10.
Artículo en Inglés | MEDLINE | ID: mdl-35982637

RESUMEN

Autoimmune diseases (ADs) are closely related to cancers; 30% of dermatomyositis (DM) cases are associated with malignancy. In lung cancer patients accompanied by DM, the most frequent cancer type is small cell lung cancer (SCLC). Anti-transcriptional intermediary factor 1 γ (anti-TIF1γ) antibody is a promising marker for the assessment of cancer risk in DM patients. The recent use of immune checkpoint inhibitors (ICIs) for extensive-stage SCLC has improved patient outcomes. However, clinical trials of ICI excluded most patients with ADs because of the increased risk of toxicity. Nevertheless, recent evidences suggest that ICI may be appropriate for AD patients. A 76-year-old man diagnosed with extensive-stage SCLC and anti-TIF1γ Ab-positive DM developed limb weakness and typical skin manifestations of DM. Positron emission tomography-computed tomography showed diffuse uptake in all muscles. The results of a nerve conduction study and electromyography were consistent with acute myopathy. Electron microscopy showed tubuloreticular inclusions in endothelial cells. He was treated with corticosteroids for DM and chemotherapy with atezolizumab for SCLC. Despite concerns regarding the use of ICI because of DM, atezolizumab was administered under close observation. After treatment, tumor size decreased and his symptoms improved significantly. We believe that the response of SCLC to chemotherapy including ICI, had a positive effect on the improvement of DM. Clinicians should consider ICIs for SCLC patients with DM and carefully monitor the patient's symptoms during treatment.


Asunto(s)
Dermatomiositis , Neoplasias Pulmonares , Carcinoma Pulmonar de Células Pequeñas , Anciano , Autoanticuerpos , Dermatomiositis/complicaciones , Dermatomiositis/diagnóstico , Dermatomiositis/tratamiento farmacológico , Células Endoteliales , Humanos , Inhibidores de Puntos de Control Inmunológico/farmacología , Inhibidores de Puntos de Control Inmunológico/uso terapéutico , Neoplasias Pulmonares/complicaciones , Neoplasias Pulmonares/tratamiento farmacológico , Masculino , Análisis de Mediación , Carcinoma Pulmonar de Células Pequeñas/complicaciones , Carcinoma Pulmonar de Células Pequeñas/tratamiento farmacológico
16.
Biochem Biophys Res Commun ; 610: 147-153, 2022 06 25.
Artículo en Inglés | MEDLINE | ID: mdl-35462096

RESUMEN

Extracellular vesicles such as exosomes in eukaryotes have drawn scrutiny due to their various roles in intercellular communication. Small RNAs, including microRNAs (miRNAs), are more abundant among the cargo of exosomes than other RNA types. MiRNAs loaded in secreted exosomes (or extracellular microRNAs) can be transported to recipient cells and may play a regulatory role although the miRNA loading (or sorting) mechanism in exosomes has not been clearly elucidated. Therefore, this study analyzed exosomal miRNA sequencing data from human myeloid U937 cells treated with phorbol 12-myristate 13-acetate (PMA) and compared it with data from PMA-untreated U937 cells. MiR-24 was highly expressed in the cytoplasm and exosomes of PMA-treated U937 cells. Also, miRNA pull-down and mass spectrophotometry analysis of PMA-treated U937 cells revealed that miR-24 was specifically associated with α-tubulin and hnRNP-E1 proteins. Furthermore, exosomal miR-24 was dramatically reduced when those proteins were inactivated with siRNAs, whereas cellular miR-24 showed no significant effect. We conclude that miR-24 is transported into exosomes from activated macrophages with the support of α-tubulin and hnRNP-E1.


Asunto(s)
Exosomas , MicroARNs , Monocitos , Exosomas/metabolismo , Ribonucleoproteínas Nucleares Heterogéneas/metabolismo , Humanos , MicroARNs/genética , MicroARNs/metabolismo , Monocitos/metabolismo , Acetato de Tetradecanoilforbol/farmacología , Tubulina (Proteína)/metabolismo , Células U937
17.
BMJ Case Rep ; 15(4)2022 Apr 13.
Artículo en Inglés | MEDLINE | ID: mdl-35418377

RESUMEN

A 49-year-old man presented with progressive asymmetric weakness and pain. Electrodiagnostic tests and nerve biopsy suggested chronic demyelinating polyneuropathy refractory to immune-modulating therapy. The patient's symptoms were aggravated, and he was finally diagnosed with T-cell lymphoma based on the findings of the second 18F-2 fluoro-2-deoxy-glucose positron emission tomography/CT performed 16 months after symptom onset. The patient received intravenous chemotherapy, but died 2 months later because of lymphoma progression. A clinical suspicion of neurolymphomatosis and early diagnosis are important for proper management.


Asunto(s)
Enfermedad Injerto contra Huésped , Linfoma de Células T , Neurolinfomatosis , Polineuropatía Paraneoplásica , Enfermedad Injerto contra Huésped/complicaciones , Humanos , Linfoma de Células T/complicaciones , Masculino , Persona de Mediana Edad , Polineuropatía Paraneoplásica/diagnóstico , Polineuropatía Paraneoplásica/etiología , Tomografía de Emisión de Positrones , Tomografía Computarizada por Rayos X/efectos adversos
18.
Bosn J Basic Med Sci ; 22(3): 403-411, 2022 Jun 01.
Artículo en Inglés | MEDLINE | ID: mdl-35038288

RESUMEN

Ovarian granulosa cell tumor (OGCT) is a rare ovarian tumor that accounts for about 2-5% of all ovarian tumors. Despite the low grade of ovarian tumors, high and late recurrences are common in OGCT patients. Even though this tumor usually occurs in adult women with high estrogen levels, the cause of OGCT is still unknown. To screen genetic variants associated with OGCT, we collected normal and matched-tumor formalin-fixed paraffin-embedded (FFPE) from 11 OGCT patients and performed whole-exome sequencing (WES) using Illumina NovaSeq 6000. A total of 1,067,219 single nucleotide polymorphisms (SNPs) and 162,155 insertions/deletions (indels) were identified from 11 pairs of samples. Of these, we identified 44 tumor-specific SNPs in 22 genes and four tumor-specific indels in one gene that were common to 11 patients. We used three cancer databases (TCGA, COSMIC, and ICGC) to investigate genes associated with ovarian cancers. Nine genes (SEC22B, FEZ2, ANKRD36B, GYPA, MUC3A, PRSS3, NUTM2A, OR8U1, and KRTAP10-6) associated with ovarian cancers were found in all three databases. In addition, we identified seven rare variants with MAF ≤ 0.05 in two genes (PRSS3 and MUC3A). Of seven rare variants, five variants in MUC3A are potentially pathogenic. Furthermore, we conducted gene enrichment analysis of tumor-specific 417 genes in SNPs and 106 genes in indels using cytoscape and metascape. In GO analysis, these genes were highly enriched in "selective autophagy", and "regulation of anoikis". Taken together, we suggest that MUC3A is implicated in OGCT development, and MUC3A could be used as a potential biomarker for OGCT diagnosis.


Asunto(s)
Tumor de Células de la Granulosa , Neoplasias Ováricas , Adulto , Femenino , Variación Genética , Tumor de Células de la Granulosa/genética , Humanos , Neoplasias Ováricas/genética , Secuenciación del Exoma
19.
Cells ; 10(9)2021 09 19.
Artículo en Inglés | MEDLINE | ID: mdl-34572127

RESUMEN

It has been known that infection plays a role in the development of hypertension. However, the role of hypertension in the progression of infectious diseases remain unknown. Many countries with high rates of hypertension show geographical overlaps with those showing high incidence rates of tuberculosis (TB). To explore the role of hypertension in tuberculosis, we compared the effects of hypertension during mycobacterial infection, we infected both hypertensive Angiotensin II (Ang II) and control mice with Mycobacterium tuberculosis (Mtb) strain H37Ra by intratracheal injection. Ang II-induced hypertension promotes cell death through both apoptosis and necrosis in Mtb H37Ra infected mouse lungs. Interestingly, we found that lipid accumulation in pulmonary tissues was significantly increased in the hypertension group compared to the normal controls. Ang II-induced hypertension increases the formation of foamy macrophages during Mtb infection and it leads to cell death. Moreover, the hypertension group showed more severe granuloma formation and fibrotic lesions in comparison with the control group. Finally, we observed that the total number of mycobacteria was increased in the lungs in the hypertension group compared to the normal controls. Taken together, these results suggest that hypertension increases intracellular survival of Mtb through formation of foamy macrophages, resulting in severe pathogenesis of TB.


Asunto(s)
Angiotensina II/toxicidad , Apoptosis , Hipertensión/patología , Pulmón/patología , Macrófagos/patología , Mycobacterium tuberculosis/fisiología , Tuberculosis/patología , Animales , Hipertensión/inducido químicamente , Pulmón/microbiología , Macrófagos/microbiología , Masculino , Ratones , Ratones Endogámicos C57BL , Necrosis , Tuberculosis/microbiología , Vasoconstrictores/toxicidad
20.
Foods ; 10(9)2021 Sep 09.
Artículo en Inglés | MEDLINE | ID: mdl-34574243

RESUMEN

Contamination by Listeria monocytogenes in packaged produce is a major concern. The purpose of this study was to find natural and affordable sanitizers to reduce L. monocytogenes contamination in agricultural products. Organic acids, ultraviolet-C (UV-C), and ethanol were analyzed either alone or in combination to assess their ability to reduce L. monocytogenes population in radish, oriental melon, and carrot samples. In radish samples, 3% malic acid combined with UV-C at a dosage of 144 mj/cm2 significantly reduced (>4 log CFU/g) the population of L. monocytogenes (1.44 ± 0.5) compared to the control sample (5.14 ± 0.09). In the case of the melon samples, exposure to UV-C at a dosage of 144 mj/cm2 combined with 3% lactic acid (2.73 ± 0.75) or 50% ethanol (2.30 ± 0.01) was effective against L. monocytogenes compared to the control sample (5.10 ± 0.19). In carrot samples, 3% lactic acid combined with 144 mj/cm2 dosage UV-C reduced L. monocytogenes population (4.48 ± 0.25) more than in the control sample (5.85 ± 0.08). These results reveal that sanitizers that are effective for one crop are less effective for another crop indicating that effective prevention methods should be customized for each crop to prevent pathogen cross contamination during postharvest washing.

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