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1.
BMC Pediatr ; 24(1): 538, 2024 Aug 22.
Artigo em Inglês | MEDLINE | ID: mdl-39174910

RESUMO

BACKGROUND: Chronic cough in children is closely related to gastroesophageal reflux (GER). However, this association has not been adequately studied due to a lack of diagnostic tools. Combined esophageal multichannel intraluminal impedance and pH (MII-pH) monitoring is considered the most accurate method for evaluating the association between symptoms and reflux, but data on its use in children with chronic cough are still lacking. We aimed to assess the association between chronic cough and GER in children through MII-pH monitoring. METHODS: Children with chronic cough (> 4 weeks) who were suspected gastroesophageal reflux disease(GERD) were selected to undergo 24 h MII-pH monitoring at our hospital. Patients were divided into groups according to their age, body position, reflux index (RI) or total reflux events, and the differences between the groups were analyzed. Then the significance and value of 24 h pH and impedance monitoring in chronic cough and the relationship between chronic cough and reflux were discussed. RESULTS: Overall, 426 patients were included. The median age was 12 months (interquartile range: 6-39.5 months), 129 (30.3%) patients had RI > 7% detected by pH-metry, and 290 (68.1%) patients had positive diagnosis based on the impedance data. GER predominantly occurred in the upright position and mostly involved weakly acidic reflux and mixed gas-liquid reflux. There were 14.1% of children in non-acid GER group were SAP positive showing no difference in acid GER group 13.2% (P = 0.88), whereas patients with SAP > 95% in MII positive group (47[16.2%]) is higher than in MII negative group (P < 0.05). CONCLUSION: Twenty four hour MII-pH monitoring is safe, well tolerated in children, but also has a higher detection rate of gastroesophageal reflux. It can find identify weakly acidic reflux, weakly alkaline reflux and reflux events with different physical properties, which can explain the relationship between GER and chronic cough more comprehensively. It provides new approach for exploring the etiology, diagnosis and treatment of children with chronic cough.


Assuntos
Tosse Crônica , Impedância Elétrica , Monitoramento do pH Esofágico , Refluxo Gastroesofágico , Criança , Pré-Escolar , Feminino , Humanos , Lactente , Masculino , Tosse Crônica/diagnóstico , Tosse Crônica/etiologia , Refluxo Gastroesofágico/diagnóstico , Refluxo Gastroesofágico/complicações , Refluxo Gastroesofágico/fisiopatologia , Estudos Retrospectivos
2.
Alzheimers Dement ; 20(9): 6243-6256, 2024 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-39023044

RESUMO

INTRODUCTION: Alzheimer's disease (AD) is a devastating neurological disease with complex genetic etiology. Yet most known loci have only identified from the late-onset type AD in populations of European ancestry. METHODS: We performed a two-stage genome-wide association study (GWAS) of AD totaling 6878 Chinese and 63,926 European individuals. RESULTS: In addition to the apolipoprotein E (APOE) locus, our GWAS of two independent Chinese samples uncovered three novel AD susceptibility loci (KIAA2013, SLC52A3, and TCN2) and a novel ancestry-specific variant within EGFR (rs1815157). More replicated variants were observed in the Chinese (31%) than in the European samples (15%). In combining genome-wide associations and functional annotations, EGFR and TCN2 were prioritized as two of the most biologically significant genes. Phenome-wide Mendelian randomization suggests that high mean corpuscular hemoglobin concentration might protect against AD. DISCUSSION: The current study reveals novel AD susceptibility loci, emphasizes the importance of diverse populations in AD genetic research, and advances our understanding of disease etiology. HIGHLIGHTS: Loci KIAA2013, SLC52A3, and TCN2 were associated with Alzheimer's disease (AD) in Chinese populations. rs1815157 within the EGFR locus was associated with AD in Chinese populations. The genetic architecture of AD varied between Chinese and European populations. EGFR and TCN2 were prioritized as two of the most biologically significant genes. High mean corpuscular hemoglobin concentrations might have protective effects against AD.


Assuntos
Doença de Alzheimer , Povo Asiático , Predisposição Genética para Doença , Estudo de Associação Genômica Ampla , População Branca , Humanos , Doença de Alzheimer/genética , Predisposição Genética para Doença/genética , Povo Asiático/genética , População Branca/genética , Feminino , Masculino , Receptores ErbB/genética , Polimorfismo de Nucleotídeo Único/genética , Idoso , Apolipoproteínas E/genética
3.
Angew Chem Int Ed Engl ; 63(39): e202409986, 2024 Sep 23.
Artigo em Inglês | MEDLINE | ID: mdl-38923276

RESUMO

The utilization of hybrid aqueous electrolytes has significantly broadened the electrochemical and temperature ranges of aqueous batteries, such as aqueous zinc and lithium-ion batteries, but the design principles for extreme operating conditions remain poorly understood. Here, we systematically unveil the ternary interaction involving salt-water-organic co-solvents and its intricate impacts on both the atomic-level and macroscopic structural features of the hybrid electrolytes. This highlights a distinct category of micelle-like structure electrolytes featuring organic-enriched phases and nanosized aqueous electrolyte aggregates, enabled by appropriate low donor number co-solvents and amphiphilic anions. Remarkably, the electrolyte enables exceptional high solubility, accommodating up to 29.8 m zinc triflate within aqueous micelles. This configuration maintains an intra-micellar salt-in-water setup, allowing for a broad electrochemical window (up to 3.86 V), low viscosity, and state-of-the-art ultralow-temperature zinc ion conductivity (1.58 mS cm-1 at -80 °C). Building upon the unique nature of the inhomogeneous localized aggregates, this micelle-like electrolyte facilitates dendrite-free Zn plating/stripping, even at -80 °C. The assembled Zn||PANI battery showcases an impressive capacity of 71.8 mAh g-1 and an extended lifespan of over 3000 cycles at -80 °C. This study opens up a promising approach in electrolyte design that transcends conventional local atomic solvation structures, broadening the water-in-salt electrolyte concept.

4.
Clin Lab ; 69(11)2023 Nov 01.
Artigo em Inglês | MEDLINE | ID: mdl-37948476

RESUMO

BACKGROUND: Hemophagocytic syndrome, also known as hemophagocytic lymphohistiocytosis (HLH), is a heterogenic syndrome, which leads to an acute, life-threatening inflammatory reaction. We report a case of rapid death due to HLH induced by chronic, active Epstein-Barr virus (EBV) infection. METHODS: Appropriate laboratory tests, abdominal ultrasonography, and cervical lymph node biopsy. RESULTS: Hemoglobin and platelet counts decreased, fasting triglyceride increased to 2.32 mmol/L, ferritin > 1,500 ng/mL, soluble CD25 (interleukin-2 receptor) > 2,400 U/mL, and abdominal ultrasound indicated splenomegaly, meeting the diagnostic criteria of HLH. A biopsy of the left cervical lymph node revealed chronic, active EBV infection. CONCLUSIONS: HLH is likely under-recognized, and mortality remains high, especially in adults; thus, prompt diagnosis and treatment are essential.


Assuntos
Infecções por Vírus Epstein-Barr , Linfo-Histiocitose Hemofagocítica , Adulto , Humanos , Linfo-Histiocitose Hemofagocítica/diagnóstico , Infecções por Vírus Epstein-Barr/complicações , Infecções por Vírus Epstein-Barr/diagnóstico , Herpesvirus Humano 4
5.
Eur J Nucl Med Mol Imaging ; 49(12): 4241-4251, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-35732974

RESUMO

PURPOSE: Accurate assessment of residual disease of tumor and lymph nodes after neoadjuvant immunochemotherapy is crucial in the active surveillance for patients with pathological complete response (pCR) and the optimal extent of lymphadenectomy for patients with non-pCR. This post hoc analysis aimed to evaluate the performance of 18F-FDG PET/CT to predict the pathological response to neoadjuvant immunochemotherapy for esophageal squamous cell carcinoma (ESCC). METHODS: Fifty-eight resectable ESCC patients received two cycles of camrelizumab in combination with chemotherapy and were enrolled in the final analysis. The 18F-FDG PET/CT scans were acquired at baseline (scan-1) and after immunochemotherapy but prior to surgery (scan-2). Maximum standardized uptake value (SUVmax), mean standardized uptake value (SUVmean), tumor-to-blood pool SUVmax ratio (SUVTBR), metabolic tumor volume (MTV), and total lesion glycolysis (TLG) were evaluated for their association with the pathological response to immunochemotherapy. RESULTS: Nineteen patients (32.8%, 19/58) had pCR and thirty-nine patients (67.2%, 39/58) had non-pCR after two doses of camrelizumab and chemotherapy. At scan-2, the SUVmax, SUVmean, SUVTBR, TLG, and MTV were significantly lower in pCR than in non-pCR patients. Decrease in TLG and MTV between scan-2 and scan-1 of the same patient was significantly higher in the pCR than in the non-pCR group. In the receiver operating characteristic curve analysis, SUVmax, SUVmean, SUVTBR, TLG, and MTV in scan-2 showed excellent predictive value for the pCR of primary tumors. Furthermore, SUVmax in scan-2 were higher in positive lymph nodes than in negative ones, suggesting a high negative predictive ability (98.6%) with a cut-off value at 1.4. CONCLUSION: The parameters of 18F-FDG PET/CT have the excellent performance for predicting pCR after the combined neoadjuvant immunochemotherapy in resectable ESCC. TRIAL REGISTRATION: ChiCTR2000028900. Registered on January 6, 2020.


Assuntos
Neoplasias Esofágicas , Carcinoma de Células Escamosas do Esôfago , Neoplasias Esofágicas/diagnóstico por imagem , Neoplasias Esofágicas/terapia , Fluordesoxiglucose F18 , Glicólise , Humanos , Terapia Neoadjuvante , Tomografia por Emissão de Pósitrons combinada à Tomografia Computadorizada , Prognóstico , Receptor de Morte Celular Programada 1 , Compostos Radiofarmacêuticos , Estudos Retrospectivos , Carga Tumoral
6.
Inorg Chem ; 61(48): 19633-19641, 2022 Dec 05.
Artigo em Inglês | MEDLINE | ID: mdl-36383924

RESUMO

The immobilization of iodine waste suffers from serious iodine loss during heat treatment. Herein, we reported on the high iodine retention immobilization of simulated radioiodine-contaminated Bi0-SiO2 sorbent in B-Bi-Zn oxide glass using Bi2O3 as a stabilizer under a N2 atmosphere. The effects of the Bi2O3 content and sintering atmosphere on the iodine immobilization behaviors (iodine retention ratio, phase composition, microstructure, and chemical stability) were investigated. It was found that the decomposition of BiI3 was prevented by adding Bi2O3 and sintering in a N2 atmosphere. The iodine retention ratio in the obtained glass waste form was significantly enhanced with increasing Bi2O3 content and sintering in the N2 atmosphere due to the synergistic effect. The achieved record-high iodine retention (92.22 ± 2.6%) was much higher than that of conventional heat treatment route (18.01 ± 3.5%). The results demonstrated that iodine was effectively immobilized through the formation of stable BixOyI (Bi5O7I and BiOI). Furthermore, the obtained iodine waste form exhibited excellent compactness and chemical stability. Owing to its high iodine retention ratio, this route can be employed to effectively immobilize radioactive iodine.

7.
Mol Biol Rep ; 49(10): 9585-9592, 2022 Oct.
Artigo em Inglês | MEDLINE | ID: mdl-36002658

RESUMO

BACKGROUND: Genetic improvement of soybean oil content depends on in-depth study of the glycerolipid biosynthesis pathway. The first acylation reaction catalysed by glycerol-3-phosphate acyltransferase (GPAT) is the rate-limiting step of triacylglycerol biosynthesis. However, the genes encoding GPATs in soybean remain unknown. METHODS: We used a novel yeast genetic complementation system and seed-specific heterologous expression to identify GmGPAT activity and molecular function in glycerolipid biosynthesis. RESULTS: Sixteen GmGPAT genes were cloned by reverse transcription-PCR for screening in yeast genetic complementation. The results showed that GmGPAT9-2 could restore the conditional lethal double knockout mutant strain ZAFU1, and GmGPAT1-1 exhibited low acyltransferase activity in serial dilution assays. In addition, the spatiotemporal expression pattern of GmGPAT9-2 exhibited tissue specificity in leaves, flowers and seeds at different developmental stages. Furthermore, both the proportion of arachidic acid and erucic acid were significantly elevated in Arabidopsis thaliana transgenic lines containing the seed-specific GmGPAT9-2 compared wild type, but the oil content was not affected. CONCLUSION: Together, our results provide reference data for future engineering of triacylglycerol biosynthesis and fatty acid composition improvement through GPATs in soybean.


Assuntos
Arabidopsis , Glycine max , Aciltransferases/genética , Aciltransferases/metabolismo , Arabidopsis/genética , Arabidopsis/metabolismo , Ácidos Graxos/metabolismo , Glicerol/metabolismo , Fosfatos , Óleos de Plantas/metabolismo , Plantas Geneticamente Modificadas/genética , Plantas Geneticamente Modificadas/metabolismo , Saccharomyces cerevisiae/genética , Saccharomyces cerevisiae/metabolismo , Sementes/metabolismo , Óleo de Soja/análise , Óleo de Soja/metabolismo , Glycine max/genética , Glycine max/metabolismo , Triglicerídeos/metabolismo
8.
Molecules ; 27(16)2022 Aug 14.
Artigo em Inglês | MEDLINE | ID: mdl-36014422

RESUMO

Aromatic imide derivatives play a critical role in boosting the electroluminescent (EL) performance of organic light-emitting diodes (OLEDs). However, the majority of aromatic imide-based materials are limited to long wavelength emission OLEDs rather than blue emissions due to their strong electron-withdrawing characteristics. Herein, two novel polycyclic fused amide units were reported as electron acceptor to be combined with either a tetramethylcarbazole or acridine donor via a phenyl linker to generate four conventional fluorescence blue emitters of BBI-4MeCz, BBI-DMAC, BSQ-4MeCz and BSQ-DMAC for the first time. BSQ-4MeCz and BSQ-DMAC based on a BSQ unit exhibited higher thermal stability and photoluminescence quantum yields than BBI-4MeCz and BBI-DMAC based on a BBI unit due to their more planar acceptor structure. The intermolecular interactions that exist in the BSQ series materials effectively inhibit the molecular rotation and configuration relaxation, and thus allow for blue-shifted emissions. Blue OLED devices were constructed with the developed materials as emitters, and the effects of both the structure of the polycyclic fused amide acceptor and the electron donor on the EL performance were clarified. Consequently, a sky-blue OLED device based on BSQ-DMAC was created, with a high maximum external quantum efficiency of 4.94% and a maximum luminance of 7761 cd m-2.

9.
BMC Pediatr ; 20(1): 430, 2020 09 09.
Artigo em Inglês | MEDLINE | ID: mdl-32907541

RESUMO

BACKGROUND: Ultrasonography is commonly used to diagnose left ventricular noncompaction (LVNC). A ratio of noncompacted to compacted myocardium (NC/C ratio) > >2 is often used to diagnose LVNC. However, a large proportion of patients with noncompact myocardium have NC/C < 2, and the prognosis of these patients have not been studied. METHODS: We included children diagnosed with LVNC between 0 and 15 years of age from January 2007 to December 2018. LVNC was diagnosed based on Stöllberger standard when over three trabeculae were found to be associated with the interventricular recesses. A maximal end systolic ratio of noncompacted to compacted layers was NC/C ratio. Outcomes for LVNC subjects with NC/C < 2 and NC/C > 2 were compared using Kaplan-Meier methods. RESULTS: There were 124 newly diagnosed LVNC cases, classified as isolated (i-LVNC, n = 47) or non-isolated (ni-LVNC, n = 77) LVNC and NC/C > 2 (n = 43) or < 2 (n = 81). The median (interquartile range) follow-up duration was 12 (3-30) months for all patients and 16 (6-36) months for survivors. Sixteen patients with i-LVNC died during follow-up. Patients with i-LVNC and NC/C > 2 had worse survival than those with NC/C < 2 (p = 0.022). CONCLUSIONS: In conclusion, during a 12-month follow-up, patients with i-LVNC with NC/C < 2 had a benign prognosis and better outcomes than those with NC/C > 2, suggesting that the former could have a more active and routine lifestyle.


Assuntos
Miocárdio Ventricular não Compactado Isolado , Criança , Humanos , Miocárdio Ventricular não Compactado Isolado/diagnóstico por imagem , Miocárdio , Prognóstico , Ultrassonografia
10.
Sensors (Basel) ; 20(2)2020 Jan 10.
Artigo em Inglês | MEDLINE | ID: mdl-32284506

RESUMO

The subject of localization has received great deal attention in the past decades. Although it is perhaps a well-studied problem, there is still room for improvement. Traditional localization methods usually assume the number of sensors is sufficient for providing desired performance. However, this assumption is not always satisfied in practice. This paper studies the time of arrival (TOA)-based source positioning in the presence of sensor position errors. An error refined solution is developed for reducing the mean-squared-error (MSE) and bias in small sensor network (the number of sensors is fewer) when the noise or error level is relatively large. The MSE performance is analyzed theoretically and validated by simulations. Analytical and numerical results show the proposed method attains the Cramér-Rao lower bound (CRLB). It outperforms the existing closed-form methods with slightly raising computation complexity, especially in the larger noise/error case.

11.
BMC Plant Biol ; 18(1): 303, 2018 Nov 26.
Artigo em Inglês | MEDLINE | ID: mdl-30477425

RESUMO

BACKGROUND: Neocinnamomum caudatum (Nees) Merr., a biodiesel tree species in the subtropical areas of South China, India and Burma, is distinctive from other species in Lauraceae family and its seed oil is rich in linoleic acid (18:2) and stearic acid (18:0). However, there is little genetic information about this species so far. In this study, a transcriptomic analysis on developing seeds of N. caudatum was conducted in an attempt to discern the molecular mechanisms involving the control of the fatty acid (FA) and triacylglycerol (TAG) biosynthesis. RESULTS: Transcriptome analysis revealed 239,703 unigenes with an average length of 436 bp and 137 putative biomarkers that are related to FA formation and TAG biosynthesis. The expression patterns of genes encoding ß-ketoacyl-acyl carrier protein synthase I (KASI), ß- ketoacyl-acyl carrier protein synthase II (KASII), stearoyl-ACP desaturase (SAD), fatty acid desaturase 2 (FAD2), fatty acid desaturase 8 (FAD8) and acyl-ACP thioesterase A/B (FATA/B) were further validated by qRT-PCR. These genes displayed a very similar expression pattern in two distinct assays. Moreover, sequence analysis of different FATBs from diverse plant species revealed that NcFATB is structurally different from its counterpart in other species in producing medium-chain saturated FAs. Concertedly, heterologous expression of NcFATB in E. coli BL21 (DE3) strain showed that this corresponding expressed protein, NcFATB, prefers long-chain saturated fatty acyl-ACP over medium-chain fatty acyl-ACP as substrate. CONCLUSIONS: Transcriptome analysis of developing N. caudatum seeds revealed a composite molecular map linked to the FA formation and oil biosynthesis in this biodiesel tree species. The substrate preference of NcFATB for long-chain saturated FAs is likely to contribute to its unique seed oil profile rich in stearic acid. Our findings demonstrate that in the tree species of Lauraceae family, the FATB enzymes producing long-chain FAs are structurally distinct from those producing medium-chain FAs, thereby suggesting that the FATB genes may serve as a biomarker for the classification of tree species of Lauraceae family.


Assuntos
Lauraceae/genética , Óleos de Plantas/metabolismo , Ácidos Graxos/biossíntese , Perfilação da Expressão Gênica , Genes de Plantas , Lauraceae/metabolismo , Sementes/genética , Sementes/crescimento & desenvolvimento , Triglicerídeos/biossíntese
12.
J Org Chem ; 83(22): 14036-14048, 2018 Nov 16.
Artigo em Inglês | MEDLINE | ID: mdl-30347150

RESUMO

An efficient nickel-catalyzed cyanation of aryl sulfonates, fluorosulfonates, and sulfamates with Zn(CN)2 was developed, which provides a facile access to the nitrile products in generally good to excellent yields. The reaction is accomplished by using NiII complex as the precatalyst and DMAP as the additive. The method also displays wide functional group compatibility; for example, keto, methoxy, N, N-dimethylamino, cyano, ester, and pyridyl groups are well-tolerated during the reaction process.

13.
J Org Chem ; 82(19): 10051-10061, 2017 10 06.
Artigo em Inglês | MEDLINE | ID: mdl-28845663

RESUMO

A new and straightforward method for the synthesis of 5-bromotetracenes through PBr3-mediated cyclization of 1,7-diyn-3,6-bis(propargyl carbonate)s has been developed. This method offers several advantages such as easily accessible starting materials, high efficiency, and wide functional group compatibility. In addition, chloro- and iodo-substituted tetracenes were also synthesized using appropriate halogenating reagents. The utility of the 5-bromotetracene products has been illustrated by their efficient transformations through various palladium-catalyzed cross-coupling reactions.

14.
Regul Toxicol Pharmacol ; 84: 35-44, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-27993652

RESUMO

This study investigated the pretreatment and post-treatment effects of dipyridamole (20 mg/kg/day, p.o.) in gentamicin-induced acute nephrotoxicity in rats. Rats were administered gentamicin (100 mg/kg/day, i.p.) for 8 days. Gentamicin-administered rats exhibited renal structural and functional changes as assessed in terms of a significant increase in serum creatinine and urea and kidney weight to body weight ratio as compared to normal rats. Renal histopathological studies revealed a marked incidence of acute tubular necrosis in gentamicin-administered rats. These renal structural and functional abnormalities in gentamicin-administered rats were accompanied with elevated serum uric acid level, and renal inflammation as assessed in terms of decrease in interleukin-10 levels. Dipyridamole pretreatment in gentamicin-administered rats afforded a noticeable renoprotection by markedly preventing renal structural and functional abnormalities, renal inflammation and serum uric acid elevation. On the other hand, dipyridamole post-treatment did not significantly prevent uric acid elevation and renal inflammation, and resulted in comparatively less protection on renal function although it markedly reduced the incidence of tubular necrosis. In conclusion, uric acid elevation and renal inflammation could play key roles in gentamicin-nephrotoxicity. Dipyridamole pretreatment markedly prevented gentamicin-induced acute nephrotoxicity, while its post-treatment resulted in comparatively less renal functional protection.


Assuntos
Anti-Inflamatórios/farmacologia , Dipiridamol/farmacologia , Gentamicinas , Necrose Tubular Aguda/tratamento farmacológico , Necrose Tubular Aguda/prevenção & controle , Rim/efeitos dos fármacos , Nefrite/tratamento farmacológico , Nefrite/prevenção & controle , Animais , Biomarcadores/sangue , Creatinina/sangue , Citoproteção , Modelos Animais de Doenças , Interleucina-10/sangue , Rim/metabolismo , Rim/patologia , Necrose Tubular Aguda/sangue , Necrose Tubular Aguda/induzido quimicamente , Masculino , Nefrite/sangue , Nefrite/induzido quimicamente , Ratos Sprague-Dawley , Fatores de Tempo , Ácido Úrico/sangue
15.
Zhong Nan Da Xue Xue Bao Yi Xue Ban ; 42(7): 865-868, 2017 Jul 28.
Artigo em Zh | MEDLINE | ID: mdl-28845015

RESUMO

Total parathyroidectomy (PTX) can be used to treat secondary hyperparathyroidism (SHPT) in uremic patients, relieving the patient's osteolytic destruction. Complete resection of bilateral parathyroid glands is key to successful operation. Recently, 2 patients successfully received surgical treatment, in which carbon nanoparticles suspension injection were used. With the help of carbon nanoparticles suspension injection, all of the 4 hyperplastic parathyroid glands were found successfully. The parathyroid hormone(PTH) was significantly decreased after operations and the clinical symptoms were relieved simultaneously. We conclude that the use of carbon nanoparticles suspension injection is helpful for total parathyroidectomy operation in uremic patients with SHPT, which can protect the normal thyroid and recurrent laryngeal nerve.


Assuntos
Carbono/metabolismo , Hiperparatireoidismo Secundário/terapia , Nanopartículas/metabolismo , Glândulas Paratireoides/metabolismo , Paratireoidectomia , Uremia/terapia , Carbono/administração & dosagem , Humanos , Nanopartículas/administração & dosagem , Glândulas Paratireoides/cirurgia , Hormônio Paratireóideo/sangue , Resultado do Tratamento
16.
Exp Lung Res ; 40(2): 86-98, 2014 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-24446702

RESUMO

The use of mycobacteriophage D29 to treat Mycobacterium tuberculosis (MTB)-infected macrophages results in significant inhibitory activity. This study aims to explore the novel treatment strategy of intracellular mycobacterial infection from the point of view of phages. We investigated the dynamic phagocytosis and elimination of D29 by macrophages, measured the titer of D29 inside and outside MTB within macrophages by fluorescence quantitative PCR, and detected the levels of interleukin 12 (IL-12) and nitric oxide (NO) in the culture supernatants of D29-infected macrophages by ELISA. Results showed that the activity of D29 phagocytosed by macrophages was significantly lower than that of D29 phagocytosed by MTB-infected macrophages. The titer of D29 that infected intracellular MTB ranged from 10(9) pfu to 10(4) pfu. The titer of D29 inside and outside intracellular MTB transiently increased when MTB-infected macrophages were incubated with D29 for 40 and 50 min; then, a large number of D29 were eliminated by macrophages. The levels of IL-12 and NO had no significant differences versus the negative control but were significantly lower compared with the lipopolysaccharide (LPS) positive control. These results suggest D29 has no effect on the immune function of macrophages and that high phage titer must be administered repeatedly if D29 is applied to treat intracellular MTB infection.


Assuntos
Imunidade/fisiologia , Macrófagos/imunologia , Macrófagos/metabolismo , Mycobacterium tuberculosis , Proteínas Supressoras de Tumor/metabolismo , Animais , Células Cultivadas , Modelos Animais de Doenças , Interleucina-2/metabolismo , Macrófagos/microbiologia , Camundongos , Camundongos Endogâmicos BALB C , Micobacteriófagos/metabolismo , Óxido Nítrico/metabolismo , Fagocitose/fisiologia , Tuberculose Pulmonar/imunologia , Tuberculose Pulmonar/metabolismo , Tuberculose Pulmonar/patologia , Regulação para Cima/fisiologia
17.
World J Surg Oncol ; 12: 385, 2014 Dec 17.
Artigo em Inglês | MEDLINE | ID: mdl-25518977

RESUMO

Both mucinous cystadenoma of the appendix and intestinal schistosomiasis are rare lesions. We report a rare case of simultaneous giant mucinous cystadenoma of the appendix and intestinal schistosomiasis. A 64-year-old man from China presented with a one-year history of pain in the right lower quadrant of the abdomen. There were no other pertinent historical findings, other than schistosomiasis. Imaging showed a large, tubular, mesenteric cystic structure extending downwards from the inferior wall of the cecum. Right hemicolectomy was performed for the appendiceal tumor. The final pathological diagnosis was mucinous cystadenoma with calcified Schistosome eggs within the mucosa and submucosa of the appendix, small intestine, colon, and lymph nodes. We deduced that the pathogenesis of appendiceal mucinous cystadenoma in our case was Schistosome eggs causing luminal obstruction, finally resulting in intraluminal accumulation of mucoid material. Postoperatively, the patient recovered well.


Assuntos
Neoplasias do Apêndice/complicações , Cistadenoma Mucinoso/complicações , Enteropatias/complicações , Schistosoma mansoni/patogenicidade , Esquistossomose/complicações , Animais , Neoplasias do Apêndice/diagnóstico , Neoplasias do Apêndice/parasitologia , Cistadenoma Mucinoso/diagnóstico , Cistadenoma Mucinoso/parasitologia , Diagnóstico Diferencial , Humanos , Enteropatias/diagnóstico , Enteropatias/parasitologia , Masculino , Pessoa de Meia-Idade , Esquistossomose/diagnóstico , Esquistossomose/parasitologia
18.
J Integr Plant Biol ; 56(9): 916-27, 2014 Sep.
Artigo em Inglês | MEDLINE | ID: mdl-24467527

RESUMO

Mutants defective in chloroplast development or photosynthesis are liable to accumulate higher levels of anthocyanin in photo-oxidative stress. However, regulatory mechanisms of anthocyanin biosynthesis in the mutants remain unclear. Here, we investigated the mechanism by which the deletion of thylakoid formation1 (THF1) leads to an increased level of anthocyanin in Arabidopsis thaliana L. Physiological and genetic evidence showed that the increased level of anthocyanin in thf1 is dependent on coronatine-insensitive1 (COI1) signaling. Our data showed that thf1 had higher levels of basal α-linolenic acid (α-LeA), and methyl jasmonate (JA)-induced α-LeA and 12-oxophytodienoic acid (OPDA) than the wild type (WT). Consistently, expression levels of phospholipase genes including pPLAIIα and PLA-Iγ1 were elevated in thf1. Furthermore, inhibition of lipase activity by bromoenol lactone, a specific inhibitor of plant pPLA, led to producing identical levels of anthocyanins in WT and thf1 plants. Interestingly, OPDA biosynthesis was triggered by light illumination in isolated chloroplasts, indicating that new protein import into chloroplasts is not required for OPDA biosynthesis. Thus, we conclude that the elevated anthocyanin accumulation in thf1 is attributed to an increase in JA levels. This JA-mediated signaling to coordinate plant metabolism and growth in stress may be conserved in other photosensitive mutants.


Assuntos
Antocianinas/biossíntese , Proteínas de Arabidopsis/genética , Proteínas de Arabidopsis/metabolismo , Arabidopsis/metabolismo , Proteínas de Membrana/genética , Mutação , Transdução de Sinais , Arabidopsis/genética , Genes de Plantas
19.
Medicine (Baltimore) ; 103(1): e36211, 2024 Jan 05.
Artigo em Inglês | MEDLINE | ID: mdl-38181289

RESUMO

This study aimed to investigate immune cell infiltration (ICI) in breast cancer tissues and its impact on the prognosis of patients. The whole transcriptome sequencing data sets of breast tissue (GSE126125, GSE190275 and GSE45498) were downloaded from Gene Expression Omnibus database. Data sets, including 281 breast cancer tissue samples and 59 normal breast tissue samples. In this study, the CIBERSORT algorithm was used to calculate the infiltration content of 22 immune cells subtypes in breast cancer tissues and normal breast tissues. The ICI between normal and breast cancer tissue samples was examined through the Rank-sum test. Furthermore, Kaplan-Meier and the log-rank test were used for survival analysis. Univariate and multivariate COX analysis was used to screen the prognostic risk factors of breast cancer based on ICI. The correlation between 22 kinds of immune cells was analyzed by the Pearson test. The results of univariate COX analysis indicated that resting dendritic cells, eosinophils, resting mast cells, monocytes, and memory CD4 T cells resting were protective factors for the prognosis of breast cancer patients (hazard ratio [HR] < 1, P < .05). The activation of macrophage M0 and mast cells were also prognostic risk factors for breast cancer patients (HR > 1, P < .05). Besides, multivariate COX analysis showed that resting mast cells were independent protective factors for the prognosis of breast cancer patients (HR < 1, P < .05). Macrophage M0 and mast cell activation were independent risk factors for the prognosis of breast cancer patients (HR > 1, P < .05). High infiltration of macrophage M0 and activated mast cells is associated with poor prognosis. Meanwhile, macrophage M0 and activated mast cells promote breast cancer progression. Low infiltration of resting mast cells is associated with poor prognosis, which inhibits breast cancer progression.


Assuntos
Neoplasias da Mama , Detecção Precoce de Câncer , Humanos , Feminino , Neoplasias da Mama/genética , Mama , Mastócitos , Macrófagos
20.
Cancer Med ; 13(12): e7353, 2024 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-38888362

RESUMO

INTRODUCTION: Penile cancer (PC) is a lethal malignancy with no effective prognostic biomarker. We aim to investigate associations between trajectories of squamous cell carcinoma antigen (SCC-A) and patient outcomes after chemotherapy based on paclitaxel, ifosfamid, and cisplatin (TIP) regimen. METHODS: Consecutive AJCC staging III/IV PC patients who received TIP chemotherapy and repeated SCC-A measurements in 2014-2022 were analyzed. Latent class growth mixed (LCGM) models were employed to characterize patients' serum SCC-A trajectories. Patient survival, and clinical and pathological tumor responses were compared. Inverse probability treatment weighting was used to adjust confounding factors. RESULTS: Eighty patients were included. LCGM models identified two distinct trajectories of SCC-A: low-stable (40%; n = 32) and high-decline (60%; n = 48). Overall survival (HR [95% CI]: 3.60 [1.23-10.53], p = 0.019), progression-free survival (HR [95% CI]: 11.33 [3.19-40.3], p < 0.001), objective response rate (37.5% vs. 62.5% p = 0.028), disease control rate (60.4% vs. 96.9% p < 0.00), and pathological complete response rate (21.2% vs. 51.9%, p = 0.014) were significantly worse in the high-decline arm. CONCLUSION: PC patients' SCC-A change rate was associated with tumor response and patient survival after TIP chemotherapy. SCC-A might assist tumor monitoring after systemic therapies.


Assuntos
Antígenos de Neoplasias , Protocolos de Quimioterapia Combinada Antineoplásica , Cisplatino , Paclitaxel , Neoplasias Penianas , Serpinas , Humanos , Masculino , Neoplasias Penianas/tratamento farmacológico , Neoplasias Penianas/sangue , Neoplasias Penianas/mortalidade , Neoplasias Penianas/patologia , Pessoa de Meia-Idade , Antígenos de Neoplasias/sangue , Protocolos de Quimioterapia Combinada Antineoplásica/uso terapêutico , Paclitaxel/administração & dosagem , Paclitaxel/uso terapêutico , Cisplatino/uso terapêutico , Cisplatino/administração & dosagem , Serpinas/sangue , Idoso , Estadiamento de Neoplasias , Biomarcadores Tumorais/sangue , Prognóstico , Estudos Retrospectivos , Adulto
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