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1.
Infect Immun ; : e0005524, 2024 Aug 19.
Artículo en Inglés | MEDLINE | ID: mdl-39158264

RESUMEN

To research the role of the NLRP3 inflammasome in Schistosoma japonicum-induced granuloma formation and liver fibrosis. In in vivo tests, BALB/c mice were used. shNLRP3 plasmid based on adeno-associated virus serotype 8 (AAV8-shNLRP3) was injected to block NLRP3 inflammasome via tail vein. Serum alanine aminotransferase (ALT) and aspartate aminotransferase (AST) levels were detected to assess liver injury. H&E staining was used for routine histopathological assessment; Masson's trichrome staining was used to detect fibrous tissues and collagen fibers. Hepatic expression of NLRP3, procaspase-1, bioactive caspase-1, collagen-1, tissue inhibitor of metalloproteinases-1 (TIMP-1), and α-smooth muscle actin (α-SMA) were detected by western blot. Serum levels of IL-1ß were detected by enzyme-linked immunosorbent assay (ELISA). The inflammatory cell infiltration and hepatic expression of IL-1ß around the granuloma were detected by immunohistochemistry staining. Treatment of S. japonicum infected mice with AAV8-shNLRP3 significantly reduced the hepatic levels of bioactive caspase-1 and IL-1ß, as well as circulating IL-1ß concentrations, while reducing the amounts of myeloperoxidase (MPO) and F4/80 positive cells around the granuloma. Moreover, collagen deposition, TIMP-1, and α-SMA, which are markers of hepatic stellate cell (HSC) activation, were reduced around the liver granuloma. These findings highlight a therapeutic potential of AAV8-shNLRP3 in schistosomiasis cirrhosis.

2.
Infect Immun ; 92(6): e0002624, 2024 Jun 11.
Artículo en Inglés | MEDLINE | ID: mdl-38767360

RESUMEN

Schistosomiasis is a serious public health problem, and previous studies found that liver function and hepatic cells are damaged. To evaluate the serum parameters of liver function and fibrosis in schistosomiasis patients infected with Schistosoma japonicum (Schistosoma J.) and analyze the correlations between liver function and serum fibrosis markers in patients infected with Schistosoma J., this retrospective study enrolled 133 patients. The study population was divided into four groups: healthy people control group (n = 20), chronic schistosomiasis without liver cirrhosis (CS) group (n = 21), schistosomiasis cirrhosis without hypoalbuminemia (SC-HA) group (n = 68), and schistosomiasis cirrhosis with hypoalbuminemia (SC +HA) group (n = 24). Clinical and laboratory data were collected for analysis. In the multiple comparison of abnormal rates of aspartate aminotransferase (AST) and total bilirubin (TBIL), the abnormal rate of the SC +HA group was significantly higher than that of the other three groups (P < 0.05), and the abnormal rate of γ-GT in the SC +HA group was significantly higher than that in the control group (P < 0.05). Multiple comparison results of serum levels of fibrosis markers showed that the SC group had a significantly higher level of indexes than other groups (P < 0.05). The levels of TGF-ß1 in the CS group, SC-HA group and SC +HA group were significantly higher than those in the control group (P < 0.001). Our study demonstrated that the liver function and hepatic cells were damaged with the progression of liver disease in patients infected with Schistosoma J., and they played an important role in the occurrence and development of liver fibrosis.


Asunto(s)
Hepatocitos , Cirrosis Hepática , Schistosoma japonicum , Esquistosomiasis Japónica , Humanos , Cirrosis Hepática/patología , Cirrosis Hepática/parasitología , Esquistosomiasis Japónica/complicaciones , Esquistosomiasis Japónica/patología , Masculino , Femenino , Persona de Mediana Edad , Animales , Adulto , Estudios Retrospectivos , Hepatocitos/patología , Hepatocitos/parasitología , Biomarcadores/sangre , Anciano , Hígado/patología , Hígado/parasitología , Pruebas de Función Hepática
3.
Mar Drugs ; 22(9)2024 Sep 18.
Artículo en Inglés | MEDLINE | ID: mdl-39330305

RESUMEN

Marine microbial secondary metabolites with diversified structures have been found as promising sources of anti-inflammatory lead compounds. This review summarizes the sources, chemical structures, and pharmacological properties of anti-inflammatory natural products reported from marine microorganisms in the past three years (2021-2023). Approximately 252 anti-inflammatory compounds, including 129 new ones, were predominantly obtained from marine fungi and they are structurally divided into polyketides (51.2%), terpenoids (21.0%), alkaloids (18.7%), amides or peptides (4.8%), and steroids (4.3%). This review will shed light on the development of marine microbial secondary metabolites as potential anti-inflammatory lead compounds with promising clinical applications in human health.


Asunto(s)
Antiinflamatorios , Organismos Acuáticos , Productos Biológicos , Antiinflamatorios/farmacología , Antiinflamatorios/química , Antiinflamatorios/aislamiento & purificación , Humanos , Productos Biológicos/farmacología , Productos Biológicos/química , Productos Biológicos/aislamiento & purificación , Animales , Hongos/química , Hongos/efectos de los fármacos
4.
BMC Plant Biol ; 22(1): 403, 2022 Aug 17.
Artículo en Inglés | MEDLINE | ID: mdl-35974315

RESUMEN

Glucoraphanin (GRA) is present in the seeds and nutrient organs of broccoli and is the precursor of the anti-cancer compound sulforaphane (SF). The hairy roots obtained by infecting broccoli (Brassica oleracea L. var. Italic Planch) leaves with Agrobacterium rhizogenes (ATCC15834) are phytohormonally autonomous, genetically stable, and can produce large amounts of the anti-cancer substance SF. Melatonin (MT) is a natural hormone widely found in plants. Studies have shown that melatonin can regulate the synthesis of secondary metabolites of downstream targets by mediating the synthesis of signal molecules. However, whether MT regulates the synthesis of NO and H2O2 and mediates the synthesis mechanism of secondary metabolites, GRA and SF, is not yet clear. In this study, the hairy roots of broccoli were treated with 500 µmol/L MT, and the genome of broccoli (Brassica oleracea L. var. botrytis L) was used as the reference genome for transcriptome analysis. By this approach, we found that MT regulates the synthesis of NO and H2O2 and mediates the synthesis of secondary metabolites GRA and SF. GO annotations indicated that DEGs involved in the MT treatment of broccoli hairy roots were mainly related to catalytic activity, cells, and metabolic processes; the KEGG pathway analysis indicated that MT treatment likely affects the hormone signal transduction process in broccoli hairy roots; broccoli hairy roots were treated with 500 µmol/L MT for 0, 6, 12, 20, and 32 h, respectively; compared with 0 h, the yield of GRA and SF increased under the other treatments. The highest yields of GRA and SF occurred at 12 h. The NO content was the highest at 12 h, and the H2O2 content was positively correlated with MT concentration. The content of NO and H2O2 were regulated, and the content of GRA and SF was increased under MT treatment. NO synthase inhibitor (L-NAME and TUN) could effectively inhibit the content of NO in broccoli hairy roots and reduce GRA and SF yield; MT could regulate NO levels by regulating NO synthesis-related enzymes and could alleviate the reduction of NO content in tissue cells caused by NO synthase inhibitor and promote NO synthesis. These results have important theoretical implications for understanding the regulation of GRA and SF synthesis events by NO and H2O2.


Asunto(s)
Brassica , Melatonina , Brassica/genética , Brassica/metabolismo , Glucosinolatos/metabolismo , Peróxido de Hidrógeno/metabolismo , Isotiocianatos , Melatonina/metabolismo , Óxido Nítrico/metabolismo , Óxido Nítrico Sintasa/metabolismo , Oximas , Sulfóxidos , Transcriptoma
5.
Amino Acids ; 54(1): 123-135, 2022 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-34825276

RESUMEN

Due to the limited effects of conventional antibiotics on the increasing emergence of drug-resistant bacteria and fungi, novel antimicrobial agents were urgently needed to alleviate this phenomenon. Nowadays, antimicrobial peptides are believed to be a promising candidate for a new generation of antimicrobial drugs. Antimicrobial peptide polybia-MPII (MPII) was first isolated from the venom of the social wasp Polybia paulista with a broad spectrum of antimicrobial activity. In the present study, the counterparts and mimics of cationic amino acids of Lys, such as Arg, His, Orn, Dab and Dap were employed to substitute Lys in the sequence of MPII. The effects of the incorporation of these amino acids on its antimicrobial activity, hemolytic activity, cytotoxicity, enzyme stability and therapeutic potential were explored. Our results showed that although the incorporation of Arg could improve its antimicrobial activity, there is no improvement in enzyme stability. The incorporation of His makes MPII exert its antimicrobial activity in a pH-dependent manner. Notably, incorporating Dap could effectively decrease its hemolytic activity and cytotoxicity and enhance its enzyme stability against trypsin. In conclusion, this study would provide an effective strategy to improve the bioavailability and metabolic stability of AMPs while decrease their hemolytic activity and cytotoxicity.


Asunto(s)
Antiinfecciosos , Avispas , Animales , Antiinfecciosos/farmacología , Péptidos Catiónicos Antimicrobianos/química , Péptidos Catiónicos Antimicrobianos/farmacología , Péptidos Antimicrobianos , Lisina , Pruebas de Sensibilidad Microbiana , Venenos de Avispas/química , Venenos de Avispas/farmacología , Avispas/química
6.
J Plant Res ; 135(6): 757-770, 2022 Nov.
Artículo en Inglés | MEDLINE | ID: mdl-35999478

RESUMEN

Hairy roots obtained by infecting broccoli (Brassica oleracea var. italica) leaves with Agrobacterium rhizogenes (ATCC15834) have the characteristics of phytohormone autonomy, genetic stability and can produce a large amount of the anti-cancer substance Sulforaphane (SF) and the biosynthetic precursor Glucoraphanin (GRA). Under the induction of the exogenous signaling molecule methyl jasmonate (MeJA), the production of SF in broccoli hairy roots was significantly increased. However, the molecular mechanism of GRA and SF synthesis in hairy roots of broccoli treated with MeJA has not been reported. In this study, according to the yield of GRA and SF, the best concentration of MeJA treatment for hairy roots of broccoli was selected. After 18 days of growth, broccoli hairy roots were treated with 10 mmol L-1 MeJA for 0, 3, 6, 9 and 12 h. Compared with 0 h, the yield of GRA and SF increased under other treatments. The highest yield of GRA and SF occurred at 9 h, which were 2.22-fold and 1.74-fold higher than those at 0 h. Brassica oleracea var. botrytis was used as reference genome, and 5,757 differentially expressed genes (DEG) were observed at 0, 3, 6, 9 and 12 h under 10 mmol L-1 MeJA treatment, of which 4,673 were down-regulated and 1084 were up-regulated. The key genes regulating GRA synthesis, CYP79F1, CYP83A1, UGT74B1, FMOGS-OX5 and GSL-OH, were up-regulated at 0 and 3 h, and down-regulated the rest of the time; BCAT2 was up-regulated at 6, 9, 12 h, and at 0, 3 h expression was down-regulated, transcription factors MYB28 and MYB29 were down-regulated by exogenous MeJA treatment. A pathway of GRA biosynthesis and transformation pathways in MeJA-treated broccoli hairy roots was simulated and the molecular mechanism of GRA biosynthesis and SF accumulation in broccoli hairy roots under MeJA treatment was revealed.


Asunto(s)
Brassica , Brassica/genética , Brassica/metabolismo , Perfilación de la Expresión Génica
7.
J Pept Sci ; 27(3): e3294, 2021 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-33283388

RESUMEN

With the extensive use of antibiotics in medicine, agriculture and food chemistry, the emergence of multi-drug resistant bacteria become more and more frequent and posed great threats to human health and life. So novel antimicrobial agents were urgently needed to defend the resistant bacteria. Jelleine-I was a small antimicrobial peptide (AMP) with eight amino acids in its sequence. It was believed to be an ideal template for developing antimicrobial agents. In the present study, the possible action mode against both gram-negative bacteria and gram-positive bacteria and in vivo antimicrobial activity was explored. Our results showed that Jelleine-I exhibits its antimicrobial activity mainly by disrupting the integrity of the cell membrane, which would not be affected by the conventional resistant mechanism. It also aims at some intracellular targets such as genomic DNA to inhibit the growth of microbes. In addition, the result of in vivo antimicrobial activity experiment showed that Jelleine-I performed a good therapeutic effect toward the mice with Escherichia coli infected peritonitis. Notably, Jelleine-I has negligible cytotoxicity toward the tested mammalian cells, indicating excellent cell selectivity between prokaryotic cells and eurkayotic cells. In summary, our results showed that Jelleine-I would be a potential candidate to be developed as a novel antimicrobial agent.


Asunto(s)
Antibacterianos/farmacología , Bacterias Gramnegativas/efectos de los fármacos , Bacterias Grampositivas/efectos de los fármacos , Proteínas Citotóxicas Formadoras de Poros/farmacología , Animales , Antibacterianos/química , Supervivencia Celular/efectos de los fármacos , ADN Bacteriano/efectos de los fármacos , ADN Bacteriano/genética , Células HEK293 , Humanos , Lipopolisacáridos/antagonistas & inhibidores , Lipopolisacáridos/farmacología , Ratones , Pruebas de Sensibilidad Microbiana , Proteínas Citotóxicas Formadoras de Poros/química , Células RAW 264.7
8.
Zhongguo Zhong Yao Za Zhi ; 46(22): 5953-5957, 2021 Nov.
Artículo en Zh | MEDLINE | ID: mdl-34951187

RESUMEN

An UPLC-MS/MS method was developed to simultaneously determine complanatoside A and complanatoside B in rat plasma with rutin as the internal standard and applied to examine the effect of salt-processing on pharmacokinetics of these two flavonoid glycosides. The pharmacokinetic parameters were estimated using DAS 3.2.6 and subjected to independent sample t-test with SPSS 23.0. No significant difference in T_(max) of complanatoside B was observed between the raw and processed groups; however, in the processed group, C_(max) and AUC_(0-12 h) of complanatoside B increased obviously(P<0.05), while MRT_(0-12 h) decreased from(3.34±0.44) h to(1.81±0.36) h(P<0.05). C_(max) [(14.72±11.13) µg·L~(-1)] and MRT_(0-24) [(3.93±0.26) h] of complanatoside A in the raw group were statistically different from those [(35.64±21.99) µg·L~(-1),(1.43±0.24) h] in the processed group(P<0.05). As a result, salt-processing can facilitate the in vivo adsorption and accelerate the excretion of complanatoside A and complanatoside B.


Asunto(s)
Planta del Astrágalo , Espectrometría de Masas en Tándem , Animales , Cromatografía Líquida de Alta Presión , Cromatografía Liquida , Glicósidos , Ratas , Semen
9.
Bioorg Med Chem Lett ; 29(13): 1576-1579, 2019 07 01.
Artículo en Inglés | MEDLINE | ID: mdl-31078411

RESUMEN

Basing on chromatographic separation techniques, fifteen aglycones (1-15), including two new anthraquinone aglycones (1, 2) and thirteen known compounds (3-15), were isolated from the small polar fraction of Cassia obtusefolia (petroleum ether extract). Structural elucidations were performed by 1D/2D NMR spectroscopy and mass spectrometry. The in vitro antioxidant and α-glucosidase inhibitory activities of these fifteen compounds were determined. Except compounds 12 (IC50 3.03 ±â€¯0.31 µg/mL, stronger than ascorbic acid, which IC50 was 6.48 ±â€¯2.30 µg/mL) and 13 (IC50 78.40 ±â€¯2.39 µg/mL), the free radical scavenging capacities of other compounds were weak. Compounds 4, 5, 6 and 13 exhibited inhibitory activities on α-glucosidase with IC50 values of 50.60 ±â€¯1.10, 22.57 ±â€¯0.07, 60.09 ±â€¯1.40, and 80.01 ±â€¯2.66 µg/mL separately, however, all the α-glucosidase inhibitory activities were weaker than positive control (acarbose).


Asunto(s)
Antioxidantes/uso terapéutico , Cassia/química , Semillas/química , alfa-Glucosidasas/metabolismo , Antioxidantes/farmacología , Estructura Molecular
10.
Sensors (Basel) ; 20(1)2019 Dec 24.
Artículo en Inglés | MEDLINE | ID: mdl-31878254

RESUMEN

It very important to be able to efficiently detect hydrazine hydrate in an aqueous medium due to its high toxicity. Here, we have proposed a new idea: to construct a sensor for the rapid determination of hydrazine hydrate based on the nano-CuO derived by controlled pyrolysis of HKUST-1 [Cu3(BTC)2(H2O)3]. The as-prepared CuO at 400 °C possesses a uniform appearance with nano-structure via SEM images, and the nano-CuO-400 has exhibited excellent electrocatalytic activity towards hydrazine oxidation. Amperometric i-t curves shows the peak current as linearly proportional to the hydrazine concentration within 1.98-169.3 µmol L-1 and 232-2096 µmol L-1 with the detection limit of 2.55 × 10-8 mol L-1 and 7.01 × 10-8 mol L-1, respectively. Moreover, the sensor constructed in the experiment shows good selectivities, and it is feasible to determining actual water samples.

11.
Zhongguo Zhong Yao Za Zhi ; 44(22): 4947-4952, 2019 Nov.
Artículo en Zh | MEDLINE | ID: mdl-31872605

RESUMEN

An UPLC-MS/MS method simultaneously determining contents of quercetin-3-O-ß-D-glucose-7-O-ß-D-gentiobioside and sinapic acid in rats' plasma was firstly established and applied to study the effects of processing on pharmacokinetics of Descurainiae Semen's active constituents. Complantatoside A as internal standard,methanol used for protein precipitation,the method was validated according to the instructions of CFDA. Rats' plasma was collected after being oral administrated equal dosage of 60% ethanal extract of raw or processed Descurainiae Semen at different point of time,then the concentrations were determined to calculate pharmacokinetic parameters using DAS 3. 2. 6. And the parameters were analyzed using SPSS 23. 0,meantime the concentration-time curve was drawn.The results showed that processing had no effects on the pharmacokinetics of QGG,but could improve the absorption of sinapic acid and slow down the excretion.


Asunto(s)
Medicamentos Herbarios Chinos/farmacocinética , Animales , Cromatografía Líquida de Alta Presión , Cromatografía Liquida , Ratas , Ratas Sprague-Dawley , Espectrometría de Masas en Tándem
12.
Molecules ; 23(12)2018 Dec 19.
Artículo en Inglés | MEDLINE | ID: mdl-30572573

RESUMEN

Andrographis Herba (AH), the dry aerial segments of Andrographis paniculata (Burm.f.) Nees, is a common herbal remedy with bitter properties in traditional Chinese medicine (TCM) theory. Although bitterness is one of the features representing Chinese medicine, it has not been implemented as an index to assess the quality and efficacy of TCM because of peoples' subjectivity to taste. In this study, 30 batches of AH with different commercial classifications (leaves, stems, or mixtures of both) were collected. Bitterness of AH was quantified by electronic tongue technology. Meanwhile, chemical compositions were characterized through establishing high-performance liquid chromatography fingerprints. The result indicated that the radar curves of the bitterness from different AH commercial classifications displayed different taste fingerprint information. Based on six taste factors, a Principal Component Analysis (PCA) score three-dimensional (3D) plot exhibited a clear grouping trend (R²X, 0.912; Q², 0.763) among the three different commercial classifications. Six compounds (Peaks 2, 3, 4, 6, 7, 8) with positive correlation to bitterness were discovered by a Spearman correlation analysis. Peaks 2, 6, 7, 8 were identified as andrographolide, neoandrographolide, 14-deoxyandrographolide, and dehydroandrographolide, respectively. The electronic tongue can be used to distinguish AH samples with different commercial classifications and for quality evaluation.


Asunto(s)
Andrographis/química , Equipo para Diagnóstico , Gusto , Diterpenos/análisis , Glucósidos/análisis , Análisis de Componente Principal , Tetrahidronaftalenos/análisis
13.
Zhongguo Zhong Yao Za Zhi ; 43(15): 3145-3149, 2018 Aug.
Artículo en Zh | MEDLINE | ID: mdl-30200710

RESUMEN

References and our previous experiment showed that the contents of glycosides were significantly decreased,while the contents of aglycones were significantly increased after processing of Cassiae Semen.It may be related to its glycosidases or the heating process. In order to investigate the reasons, high performance liquid chromatographic (HPLC) was used to study the effects of these two factors on contents of Cassiae Semen's main chemical components in processing. The results showed that glycoside hydrolases was present in Cassiae Semen and could rapidly hydrolyze glycosides from Cassiae Semen into aglycones in suitable temperature with sufficient water.However,it didn't show effect on contents change of main constituents in the procedure of Cassiae Semen processing.The reason for content decrease of glycosides and content increase of aglycones in processed Cassiae Semen was glycoside bond cracking to produce corresponding aglycone at high temperature.This study further provides basis for further revealing of the processing mechanism of Cassiae Semen.


Asunto(s)
Cassia/química , Medicamentos Herbarios Chinos/química , Glicósidos/química , Química Farmacéutica , Cromatografía Líquida de Alta Presión
14.
Zhongguo Zhong Yao Za Zhi ; 43(7): 1459-1466, 2018 Apr.
Artículo en Zh | MEDLINE | ID: mdl-29728037

RESUMEN

A new flavonoid glycoside, named complanatoside C (1), and 19 known compounds (2-20) were isolated from an 95% ethanol extract of Astragali Semen by various chromatographic methods. Their structures were identified on the basis of UV, IR, NMR, MS spectroscopic data analysis, and comparison with those in literature, including fifteen flavonoid glycoside (1-15), and six other constituents (16-20), among which compounds 16-19 were isolated from this plant for the first time.


Asunto(s)
Planta del Astrágalo/química , Flavonoides/análisis , Glicósidos/análisis , Semillas/química , Estructura Molecular , Fitoquímicos/análisis
15.
J Huazhong Univ Sci Technolog Med Sci ; 35(2): 230-234, 2015 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-25877357

RESUMEN

This study was aimed to evaluate the long-term effects of telbivudine (LdT) in the treatment of chronic hepatitis B (CHB) and HBV-related liver cirrhosis (LC) and to observe the changes of immunological responses during LdT treatment. Clinical data of 80 CHB and 28 HBV-related LC patients who were administered with LdT for 108 weeks and followed up were retrospectively analyzed. The liver function indicators including ALT, AST and γ-GT, HBV DNA copy number in serum and the rates of hepatitis B e antigen (HBeAg) seroconversion were analyzed before and 12, 24, 36, 48, 60, 72, 84, 96 and 108 weeks after LdT treatment in CHB and LC groups. Four serum fibrosis-related markers, including hyaluronic acid (HA), human laminin (LN), human type IV collagen (IV-C) and human N-terminal procollagen III peptide (PC-III), were detected before and after LdT treatment in LC group. The results showed favorable viral suppression and biochemical responses after treatment with LdT for 12 weeks, and a high rate of virological and biochemical control was maintained during the course of 108-week treatment in both CHB and LC groups. The four fibrosis-related markers, especially HA and LN, were down-regulated to some degrees in LC group. Moreover, LdT treatment led to the fluctuation of the circulating interferon-γ (IFN-γ) and interleukin-10 (IL-10) levels at different time points in CHB group. It was concluded that LdT could favorably lead to the virological suppression and biochemical remission. Besides, IFN-γ and IL-10 may represent a suitable and effective predictor of responsiveness during LdT therapy.


Asunto(s)
Antivirales/uso terapéutico , Hepatitis B Crónica/tratamiento farmacológico , Cirrosis Hepática/tratamiento farmacológico , Timidina/análogos & derivados , Adulto , Anciano , Femenino , Hepatitis B Crónica/inmunología , Humanos , Cirrosis Hepática/inmunología , Masculino , Persona de Mediana Edad , Telbivudina , Timidina/uso terapéutico
16.
Sci Total Environ ; 946: 174057, 2024 Oct 10.
Artículo en Inglés | MEDLINE | ID: mdl-38914340

RESUMEN

Root-associated microbiota provide great fitness to hosts under environmental stress. However, the underlying microecological mechanisms controlling the interaction between heavy metal-stressed plants and the microbiota are poorly understood. In this study, we screened and isolated representative amplicon sequence variants (strain M4) from rhizosphere soil samples of Trifolium repens L. growing in areas with high concentrations of heavy metals. To investigate the microecological mechanisms by which T. repens adapts to heavy metal stress in abandoned mining areas, we conducted potting experiments, bacterial growth promotion experiments, biofilm formation experiments, and chemotaxis experiments. The results showed that high concentrations of heavy metals significantly altered the rhizosphere bacterial community structure of T. repens and significantly enriched Microbacterium sp. Strain M4 was demonstrated to significantly increased the biomass and root length of T. repens under heavy metal stress. Additionally, L-proline and stigmasterol could promote bacterial growth and biofilm formation and induce chemotaxis for strain M4, suggesting that they are key rhizosphere secretions of T. repens for Microbacterium sp. recruitment. Our results suggested that T. repens adapted the heavy metal stress by reshaping rhizosphere secretions to modify the rhizosphere microbiota.


Asunto(s)
Metales Pesados , Microbacterium , Minería , Raíces de Plantas , Rizosfera , Microbiología del Suelo , Contaminantes del Suelo , Trifolium , Trifolium/microbiología , Contaminantes del Suelo/toxicidad , Raíces de Plantas/microbiología , Microbacterium/fisiología , Microbiota/efectos de los fármacos , Plomo/toxicidad , Zinc
17.
Talanta ; 274: 126060, 2024 Jul 01.
Artículo en Inglés | MEDLINE | ID: mdl-38604044

RESUMEN

In this study, a lysosomal targeting fluorescent probe recognition on CEs was designed and synthesized. The obtained probe BF2-cur-Mor demonstrated excellent selectivity, sensitivity, pH-independence, and enzyme affinity towards CEs within 5 min. BF2-cur-Mor could enable recognition of intracellular CEs and elucidate that the CEs content of different cancer cells follows the rule of HepG2 > HCT-116 > A549 > HeLa, and the CEs expression level of hepatoma cancer cells far exceeds that of normal hepatic cells, being in good agreement with the previous reports. The ability of BF2-cur-Mor to monitor CEs in vivo was confirmed by zebrafish experiment. BF2-cur-Mor exhibits some pharmacological activity in that it can induce apoptosis in hepatocellular carcinoma cells but is weaker in normal hepatocyte cells, being expected to be a potential "diagnostic and therapeutic integration" tool for the clinical diagnosis of CEs-related diseases.


Asunto(s)
Colorantes Fluorescentes , Pez Cebra , Humanos , Colorantes Fluorescentes/química , Colorantes Fluorescentes/síntesis química , Animales , Carboxilesterasa/metabolismo , Carboxilesterasa/antagonistas & inhibidores , Apoptosis/efectos de los fármacos , Diseño de Fármacos
18.
Cancers (Basel) ; 15(23)2023 Nov 29.
Artículo en Inglés | MEDLINE | ID: mdl-38067346

RESUMEN

We aimed to develop a clinical predictive model for predicting the overall survival (OS) in stage I-III CRC patients after radical resection with normal preoperative CEA. This study included 1082 consecutive patients. They were further divided into a training set (70%) and a validation set (30%). The selection of variables for the model was informed by the Akaike information criterion. After that, the clinical predictive model was constructed, evaluated, and validated. The net reclassification index (NRI) and integrated discrimination improvement (IDI) were employed to compare the models. Age, histologic type, pT stage, pN stage, carbohydrate antigen 242 (CA242), and carbohydrate antigen 125 (CA125) were selected to establish a clinical prediction model for OS. The concordance index (C-index) (0.748 for the training set and 0.702 for the validation set) indicated that the nomogram had good discrimination ability. The decision curve analysis highlighted that the model has superior efficiency in clinical decision-making. NRI and IDI showed that the established nomogram markedly outperformed the TNM stage. The new clinical prediction model was notably superior to the AJCC 8th TNM stage, and it can be used to accurately assess the OS of stage I-III CRC patients undergoing radical resection with normal preoperative CEA.

19.
ACS Nano ; 16(5): 7636-7650, 2022 05 24.
Artículo en Inglés | MEDLINE | ID: mdl-35533290

RESUMEN

Postoperative adhesion is a common complication of abdominal surgery, which always has many adverse effects in patients. At present, there is still a lack of effective treatment measures and materials to prevent adhesion in the clinics. Herein, we report the potential use of J-1-ADP hydrogel formed by natural antimicrobial peptide jelleine-1 (J-1) self-assembling in adenosine diphosphate (ADP) sodium solution to prevent postsurgery adhesion formation. J-1-ADP hydrogel was found to have good antimicrobial activity against the bacteria and fungi tested and can be used to prevent tissue infection, which was thought to be one of the incitements of adhesion. Due to ADP being a platelet-activating factor, J-1-ADP hydrogel showed significant hemostatic activity in vitro verified by whole blood coagulation, plasma coagulation, platelet activation, and platelet adhesion assays. Further, it showed potent hemostatic activity in a mouse liver hemorrhage model. Bleeding was believed to be a cause of the formation of postsurgery adhesion. J-1-ADP hydrogel had a significant antiadhesion effect in a rat side wall defect-cecum abrasion model. In addition, it had good biocompatibility and degradation properties. So the present study may provide an alternative strategy for designing antimicrobial peptide hydrogel material to prevent postoperative adhesion formation in the clinic.


Asunto(s)
Antiinfecciosos , Hemostáticos , Ratas , Ratones , Animales , Hidrogeles/farmacología , Hidrogeles/química , Adenosina Difosfato/farmacología , Péptidos Antimicrobianos , Hemostasis , Adherencias Tisulares/metabolismo , Adherencias Tisulares/prevención & control , Hemostáticos/farmacología , Antiinfecciosos/farmacología , Hemorragia/tratamiento farmacológico , Péptidos/farmacología , Péptidos/uso terapéutico
20.
J Int Med Res ; 49(4): 3000605211009715, 2021 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-33884913

RESUMEN

OBJECTIVES: This retrospective study aimed to investigate and analyze the clinical significance of blood platelets (PLTs) and mean platelet volume (MPV) in patients with ulcerative colitis (UC). METHODS: A total of 132 patients with UC and 208 healthy subjects were enrolled. PLTs, MPV, platelet-large cell rate (P-LCR), C-reactive protein (CRP), fibrinogen (FIB) and D-dimer were analyzed. Correlations were calculated between disease activity/extent of disease and MPV, PLT, and CRP levels in patients with UC. RESULTS: PLT levels were significantly higher while MPV and P-LCR were lower in patients with UC compared with controls. Disease activity was positive correlated with CRP (r = 0.564) and PLT (r = 0.307) but negatively correlated with MPV (r = -0.351). Extent of disease was positively correlated with CRP (r = 0.312) but showed no correlation with PLTs and MPV. FIB and D-dimer were higher in patients with UC, but the difference in FIB levels was not statistically significant. CONCLUSIONS: PLTs and MPV are potential biomarkers for UC disease activity. These data may help clinicians to attain a more comprehensive judgment of the general condition of patients with UC.


Asunto(s)
Colitis Ulcerosa , Volúmen Plaquetario Medio , Plaquetas , Proteína C-Reactiva , Humanos , Estudios Retrospectivos
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