Your browser doesn't support javascript.
loading
Show: 20 | 50 | 100
Results 1 - 20 de 67
Filter
1.
Mycopathologia ; 189(4): 63, 2024 Jul 10.
Article in English | MEDLINE | ID: mdl-38985209

ABSTRACT

The diagnosis of Talaromyces marneffei infection in HIV-negative patients remains challenging. There is an urgent need for rapid and convenient methods to diagnose this complicated disease. The aim of this study was to evaluate the diagnostic efficiency of metagenomic next-generation sequencing (mNGS) for talaromycosis in non-HIV-infected patients by comparing mNGS with traditional microbial culture. In total, 66 samples from 57 patients were analyzed via both mNGS and microbial culture. The ROC curve showed a sensitivity for mNGS of 97.22%, which was greater than that of microbial culture (61.11%). Samples from the respiratory tract, infectious skin lesions, and lymph nodes are recommended as routine samples for talaromycosis detection via mNGS. Furthermore, mNGS significantly reduced the diagnostic time compared to microbial culture. Overall, our study demonstrated that mNGS is a promising tool for rapid and accurate pathogenic detection in HIV-negative patients with talaromycosis.


Subject(s)
High-Throughput Nucleotide Sequencing , Metagenomics , Mycoses , Sensitivity and Specificity , Talaromyces , Humans , High-Throughput Nucleotide Sequencing/methods , Talaromyces/genetics , Talaromyces/isolation & purification , Male , Female , Metagenomics/methods , Adult , Mycoses/diagnosis , Mycoses/microbiology , Middle Aged , Aged , Young Adult , ROC Curve , Adolescent
2.
Drug Dev Ind Pharm ; 49(9): 559-571, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37649422

ABSTRACT

OBJECTIVE: Alzheimer's disease (AD) is a neurodegenerative disease that is associated with aging and is influenced by both genetic and environmental factors. Several studies and clinical trials have demonstrated that resveratrol (Res) and salidroside (Sal) are not only biologically safe but also influence AD biomarker trajectories. However, their clinical applications have been quite limited due to poor specificity, low solubility, and insufficient blood-brain barrier (BBB) penetration. Therefore, we developed a nano-drug delivery system in which Res and Sal were encapsulated in liposomes, which were surface-modified with ApoE (ApoE-Res/Sal-Lips) to compensate for these deficiencies. METHOD: In this study, ApoE-Res/Sal-Lips were prepared using a standard thin-film hydration method for liposomes. Then, cellular uptake of the loaded liposomes was assessed in vitro using fluorescent staining assays. A BBB model was constructed to investigate the capacity of the liposomes to cross the BBB in vitro, and the ability of liposomes to target the brain was observed by in vivo imaging. In addition, the neuroprotective effects of the different liposome formulations in APP/PS-1 mice were evaluated by measuring the changes in levels of oxidative, anti-inflammatory, and anti-apoptotic factors in the mice brains. RESULTS: In vitro, ApoE-Res/Sal-Lips increased the uptake of Res and Sal by bEnd.3 and N2a cells, enhanced BBB penetration, and improved transport efficiency. In vivo, the ApoE-Res/Sal-Lips were found to alleviate AD pathological symptoms, reduce learning and memory impairments, and improve brain function. CONCLUSION: ApoE-Res/Sal-Lips provide a new method for the treatment of AD.


Subject(s)
Alzheimer Disease , Glucosides , Neurodegenerative Diseases , Phenols , Mice , Animals , Liposomes/pharmacology , Alzheimer Disease/drug therapy , Resveratrol/pharmacology , Blood-Brain Barrier , Apolipoproteins E/pharmacology , Apolipoproteins E/therapeutic use
3.
Mycoses ; 66(9): 795-800, 2023 Sep.
Article in English | MEDLINE | ID: mdl-37226871

ABSTRACT

BACKGROUND: Mucormycosis is a rare form of invasive, rapidly progressive and lethal opportunistic fungal infection caused by Mucorales. Although Rhizopus arrhizus (R. arrhizus) is the most commonly isolated Mucorales worldwide, infections caused by Apophysomyces variabilis (A. variabilis) are increasing. OBJECTIVES AND METHODS: We present a case of necrotizing fasciitis caused by A. variabilis in an immunocompetent woman. In order to further understand the characteristics of the strain isolated from the patient, we identified the strain through ITS sequencing, assessed the ability to tolerate salt concentrations and temperature conditions, in addition to performing in vitro drug susceptibility testing against common antifungal agents. RESULTS: The strain showed 98.76% identity with A. variabilis in the NCBI database, and it was found to tolerate higher temperatures and salt concentrations than previously reported strains. The strain was sensitive to amphotericin B and posaconazole, but not to voriconazole, itraconazole, 5-fluorocytosine and echinocandins. CONCLUSIONS: This case indicates that Mucorales caused by A. variabilis should be recognised as an emerging pathogen that can cause a high mortality rate in the absence of prompt diagnosis and proper treatment in China, aggressive surgical debridement combined with prompt and appropriate antifungal treatment may improve outcomes.


Subject(s)
Mucorales , Mucormycosis , Mycobacterium tuberculosis , Female , Humans , Microbial Sensitivity Tests , Antifungal Agents/therapeutic use , Mucormycosis/diagnosis , Mucormycosis/drug therapy , Mucormycosis/microbiology
4.
Drug Dev Ind Pharm ; 49(2): 189-206, 2023 Feb.
Article in English | MEDLINE | ID: mdl-36971392

ABSTRACT

OBJECTIVE: The aim was to develop a nanoscale drug delivery system with enzyme responsive and acid sensitive particle size and intelligent degradation aiming to research the inhibitory effect on breast cancer. SIGNIFICANCE: The delivery system addressed the problems of tissue targeting, cellular internalization, and slow drug release at the target site, which could improve the efficiency of drug delivery and provide a feasible therapeutic approach for breast cancer. METHODS: The acid sensitive functional material DSPE-PEG2000-dyn-PEG-R9 was synthesized by Michael addition reaction. Then, the berberine plus baicalin intelligent micelles were prepared by thin-film hydration. Subsequently, we characterized the physical and chemical properties of berberine plus baicalin intelligent micelles, evaluated its anti-tumor effects in vivo and in vitro. RESULTS: The target molecule was successfully synthesized, and the intelligent micelles showed excellent chemical and physical properties, delayed drug release and high encapsulation efficiency. In vitro and in vivo experiments also confirmed that the intelligent micelles could effectively target tumor sites, penetrate tumor tissues, enrich in tumor cells, inhibit tumor cell proliferation, inhibit tumor cell invasion and migration, and induce tumor cell apoptosis. CONCLUSION: Berberine plus baicalin intelligent micelles have excellent anti-tumor effects and no toxicity to normal tissues, which provides a new potential drug delivery strategy for the treatment of breast cancer.


Subject(s)
Antineoplastic Agents , Berberine , Breast Neoplasms , Humans , Female , Micelles , Breast Neoplasms/drug therapy , Antineoplastic Agents/pharmacology , Berberine/pharmacology , Berberine/chemistry , Berberine/therapeutic use , Particle Size , Cell Line, Tumor , Drug Carriers/chemistry
5.
J Clin Med ; 11(18)2022 Sep 14.
Article in English | MEDLINE | ID: mdl-36143037

ABSTRACT

Originally considered to be a plant pathogen, reports of phaeohyphomycosis due to Curvularia lunata (C. lunata) in animals and humans are increasing. However, studies on the pathogenesis, virulence, and epidemiology of C. lunata have rarely been discussed. In the present study, BALB/c mice were experimentally inoculated with C. lunata suspension by different routes and the course of infection was evaluated. In addition, the in vitro antifungal susceptibility of C. lunata against six commonly used antifungals was evaluated using the microdilution method. Inoculation resulted in skin lesions in animals inoculated intraperitonially and subcutaneously. Infection was confirmed by both mycological and histopathologic examination. C. lunata spores and hyphae were detected in the histopathologic sections stained with hexamine silver staining. In addition, voriconazole (VRC) demonstrated greater activity against C. lunata when compared to the other antifungals, whereas fluconazole (FLC) was the least active antifungal with a minimum inhibitory concentration (MIC) range of 8-16 µg/mL. Further studies are necessary to understand the pathogenicity of C. lunata and uncover the mystery of this fungus.

6.
Front Endocrinol (Lausanne) ; 13: 928788, 2022.
Article in English | MEDLINE | ID: mdl-35992139

ABSTRACT

Mutations in the B-Raf proto-oncogene, serine/threonine kinase (BRAF), have been linked to a variety of solid tumors such as papillary thyroid carcinoma. The purpose of this study was to compare the DP-TOF, a DNA mass spectroscopy (MS) platform, and next-generation sequencing (NGS) methods for detecting multiple-gene mutations (including BRAFV600E) in thyroid nodule fine-needle aspiration fluid. In this study, we collected samples from 93 patients who had previously undergone NGS detection and had sufficient DNA samples remaining. The MS method was used to detect multiple-gene mutations (including BRAFV600E) in DNA remaining samples. NGS detection method was used as the standard. The MS method's overall sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) were 95.8%, 100%, 100%, and 88%, respectively in BRAFV600E gene mutation detection. With a kappa-value of 0.92 (95%CI 0.82-0.99), the level of agreement between these methods was incredibly high. Furthermore, when compared to NGS in multiple-gene detection, the MS method demonstrated higher sensitivity and specificity, 82.9% and 100%, respectively. In addition, we collected the postoperative pathological findings of 50 patients. When the postoperative pathological findings were used as the standard, the MS method demonstrated higher sensitivity and specificity, at 80% and 80%, respectively. Our findings show that the MS method can be used as an inexpensive, accurate, and dependable initial screening method to detect genes mutations and as an adjunct to clinical diagnosis.


Subject(s)
Thyroid Neoplasms , Thyroid Nodule , Biopsy, Fine-Needle/methods , DNA Mutational Analysis/methods , High-Throughput Nucleotide Sequencing , Humans , Mass Spectrometry , Mutation , Proto-Oncogene Proteins B-raf/genetics , Thyroid Neoplasms/diagnosis , Thyroid Neoplasms/genetics , Thyroid Neoplasms/pathology , Thyroid Nodule/diagnosis , Thyroid Nodule/genetics , Thyroid Nodule/pathology
7.
Ying Yong Sheng Tai Xue Bao ; 33(12): 3395-3402, 2022 Dec.
Article in Chinese | MEDLINE | ID: mdl-36601846

ABSTRACT

Organic pollutant 2,4,6-trichlorophenol (2,4,6-TCP) is commonly found in anaerobic environments such as sediments and groundwater aquifers. To investigate the ability of the anaerobic consortium XH-1 to degrade 2,4,6-TCP, we established anaerobic incubations using 2,4,6-TCP as the substrate and inoculated the incubations with XH-1. Additional subcultures were established by amending with intermediate product 4-chlorophenol (4-CP) or phenol as the substrate. The transformation products of 2,4,6-TCP were analyzed and determined using high-performance liquid chromatography (HPLC). Microbial community structure and key microbial groups involved in the degradation of 2,4,6-TCP were analyzed based on 16S rRNA gene high-throughput sequencing. The results showed that the initial 122 µmol·L-1 2,4,6-TCP was completely transformed after a 80-day incubation at a rate of 0.15 µmol·d-1. 2,4-dichlorophenol (2,4-DCP), 4-CP and phenol were identified as the intermediate products. All intermediate products generated from 2,4,6-TCP transformation were completely degraded after being incubated for 325 days. The main microbial groups responsible for the reductive dechlorination of 2,4,6-TCP might be the organohalide respiring Dehalobacter and Dehalococcoides. The subsequent reductive dechlorination of 4-CP to phenol was likely driven by Dehalococcoides. The cooperation between the organohalide respiring bacteria, Syntrophorhabdus and methanogens (e.g. Methanosaeta and Methanofolis) was responsible for the complete degradation of 2,4,6-TCP.


Subject(s)
Chlorophenols , Anaerobiosis , RNA, Ribosomal, 16S/genetics , Chlorophenols/chemistry , Chlorophenols/metabolism , Phenols/metabolism , Phenol , Biodegradation, Environmental
9.
Front Microbiol ; 12: 708280, 2021.
Article in English | MEDLINE | ID: mdl-34447360

ABSTRACT

This study analyzed the in vitro drug sensitivity of Cryptococcus spp. from Guangxi, Southern China. One hundred three strains of Cryptococcus were recovered from 86 patients; 14 were HIV positive and 72 were HIV negative. Ninety-two strains were identified as Cryptococcus neoformans var. grubii, while 11 strains were identified as Cryptococcus gattii (5 C. gattii sensu stricto and 6 Cryptococcus deuterogattii). The recovered strains were tested against commonly used antifungal drugs (fluconazole, amphotericin B, 5-fluorocytosine, itraconazole, and voriconazole) and to novel antifungal drugs (posaconazole and isavuconazole) using CLSI M27-A4 method. The results showed that all isolates were susceptible to most antifungal drugs, of which the minimum inhibitory concentration (MIC) ranges were as follows: 0.05-4 µg/ml for fluconazole, 0.25-1 µg/ml for amphotericin B; 0.0625-2 µg/ml for 5-fluorocytosine, 0.0625-0.25 µg/ml for itraconazole, 0.0078-0.25 µg/ml for voriconazole, 0.0313-0.5 µg/ml for posaconazole, 0.0020-0.125 µg/ml for isavuconazole for C. neoformans var. grubii isolates, and 1-16 µg/ml for fluconazole, 0.125-1 µg/ml for 5-fluorocytosine, 0.25-1 µg/ml for amphotericin B, 0.0625-0.25 µg/ml for itraconazole, 0.0156-0.125 µg/ml for voriconazole, 0.0156-0.25 µg/ml for posaconazole, and 0.0078-0.125 µg/ml for isavuconazole for C. gattii isolates. Furthermore, some C. neoformans var. grubii isolates were found to be susceptible-dose dependent to 5-fluorocytosine and itraconazole. In addition, a reduction in the potency of fluconazole against C. gattii is possible. We observed no statistical differences in susceptibility of C. neoformans var. grubii and C. gattii in the tested strains. Continuous observation of antifungal susceptibility of Cryptococcus isolates is recommended to monitor the emergence of resistant strains.

10.
Autoimmunity ; 54(2): 104-113, 2021 03.
Article in English | MEDLINE | ID: mdl-33719773

ABSTRACT

BACKGROUND: Bronchopneumonia is a disease of the respiratory tract. It leads to other complications and endangers life and health. Long non-coding RNA (lncRNA) participates in the occurrence and development of bronchopneumonia. Nuclear paraspeckle assembly transcript 1 (NEAT1) plays a key role in inflammatory diseases, but the function of NEAT1 in bronchopneumonia remains unclear. METHODS: RT-qPCR and Western blotting were performed to determine genes and proteins expressions. MTT was applied to test cell viability. Cell apoptosis was detected by flow cytometry. RIP was used to investigate the correlation between NEAT1 and miR-155-5p. The interaction between miR-155-5p and NEAT1 or MyD88 was evaluated by the dual-luciferase reporter gene. RESULTS: NEAT1 and MyD88 were upregulated in BEAS-2B cells by LPS, while miR-155-5p was downregulated. Knockdown of NEAT1 inhibited LPS-induced BEAS-2B cells growth inhibition by inhibiting the apoptosis. In addition, NEAT1 silencing suppressed LPS-induced inflammatory responses in BEAS-2B cells via suppression of TNF-α, IL-1ß, IL-6, and IL-18. Meanwhile, NEAT1 is directly bound to miR-155-5p to regulate MyD88/NF-κB axis, and overexpression of miR-155-5p increased cell proliferation and suppressed inflammatory factors expression levels and cell apoptosis. Furthermore, sh-NEAT1-induced inhibition of BEAS-2B cells injury was partially reversed by miR-155-5p inhibitor or MyD88 overexpression. CONCLUSION: NEAT1 silencing suppressed LPS-induced BEAS-2B cells injury and inflammation by the mediation of miR-155-5p/MyD88/NF-κB axis. Thus, our study might shed new light on exploring the new strategies for the treatment of bronchopneumonia.


Subject(s)
Bronchopneumonia/genetics , MicroRNAs/metabolism , Myeloid Differentiation Factor 88/genetics , RNA, Long Noncoding/metabolism , Apoptosis/drug effects , Apoptosis/genetics , Apoptosis/immunology , Bronchopneumonia/immunology , Case-Control Studies , Cell Line, Tumor , Cell Proliferation/drug effects , Cell Proliferation/genetics , Gene Knockdown Techniques , Humans , Lipopolysaccharides/immunology , MicroRNAs/antagonists & inhibitors , Myeloid Differentiation Factor 88/metabolism , NF-kappa B/metabolism , RNA, Long Noncoding/genetics , Signal Transduction/drug effects , Signal Transduction/genetics , Signal Transduction/immunology
11.
Drug Dev Ind Pharm ; 47(1): 100-112, 2021 Jan.
Article in English | MEDLINE | ID: mdl-33295825

ABSTRACT

Gastric cancer is one of the leading causes of cancer-related death worldwide with a poor prognosis. Gastric cancer is usually treated with surgery and chemotherapy, accompanied by a high rate of metastasis and recurrence. In this paper, R8 (RRRRRRRR) modified vinorelbine plus schisandrin B liposomes had been successfully constructed for treating gastric cancer. In the liposomes, R8 was used to enhance the intracellular uptake, schisandrin B was incorporated into liposomes for inhibiting tumor cells metastasis, and vinorelbine was encapsulated into liposomes as antitumor drugs. Studies were performed on BGC-823 cells in vitro and were verified in the BGC-823 cell xenografts nude mice in vivo. Results in vitro demonstrated that the targeting liposomes could induce BGC-823 cells apoptosis, inhibit the metastasis of tumor cells, and increase targeting effects to tumor cells. Meanwhile, action mechanism studies showed that the targeting liposomes could down-regulate VEGF, VE-Cad, HIF-1a, PI3K, MMP-2, and FAK to inhibit tumor metastasis. In vivo results exhibited that the targeting liposomes displayed an obvious antitumor efficacy by accumulating selectively in tumor site and induce tumor cell apoptosis. Hence, R8 modified vinorelbine plus schisandrin B liposomes might provide a safe and efficient therapy strategy for gastric cancer.


Subject(s)
Liposomes , Stomach Neoplasms , Vinorelbine/chemistry , Animals , Apoptosis , Cell Line, Tumor , Cyclooctanes/chemistry , Cyclooctanes/pharmacology , Lignans/chemistry , Lignans/pharmacology , Mice , Mice, Nude , Polycyclic Compounds/chemistry , Polycyclic Compounds/pharmacology , Stomach Neoplasms/drug therapy , Vinorelbine/pharmacology
12.
J Exp Med ; 217(12)2020 12 07.
Article in English | MEDLINE | ID: mdl-32880631

ABSTRACT

Talaromyces marneffei causes life-threatening opportunistic infections, mainly in Southeast Asia and South China. T. marneffei mainly infects patients with human immunodeficiency virus (HIV) but also infects individuals without known immunosuppression. Here we investigated the involvement of anti-IFN-γ autoantibodies in severe T. marneffei infections in HIV-negative patients. We enrolled 58 HIV-negative adults with severe T. marneffei infections who were otherwise healthy. We found a high prevalence of neutralizing anti-IFN-γ autoantibodies (94.8%) in this cohort. The presence of anti-IFN-γ autoantibodies was strongly associated with HLA-DRB1*16:02 and -DQB1*05:02 alleles in these patients. We demonstrated that adult-onset acquired immunodeficiency due to autoantibodies against IFN-γ is the major cause of severe T. marneffei infections in HIV-negative patients in regions where this fungus is endemic. The high prevalence of anti-IFN-γ autoantibody-associated HLA class II DRB1*16:02 and DQB1*05:02 alleles may account for severe T. marneffei infections in Southeast Asia. Our findings clarify the pathogenesis of T. marneffei infection and pave the way for developing novel treatments.


Subject(s)
Autoantibodies/immunology , Interferon-gamma/immunology , Mycoses/immunology , Mycoses/microbiology , Talaromyces/physiology , Adult , Aged , Alleles , Autoantibodies/blood , Case-Control Studies , Female , HLA-DRB1 Chains/immunology , Humans , Male , Middle Aged , Mycoses/blood , Young Adult
13.
J Drug Target ; 28(10): 1071-1084, 2020 12.
Article in English | MEDLINE | ID: mdl-32484364

ABSTRACT

Gastric cancer is a malignant tumour characterised by the uncontrolled cell growth. The incidence and mortality of gastric cancer remain high for the invasion and metastasis. We are urgently seeking a risk-free and effective treatment strategy for gastric cancer. In this study, paclitaxel and tetrandrine were encapsulated in the inner core of micelles, and DSPE-PEG2000-CPP and HA were modified on the micellar surface. HA/CPP modified paclitaxel plus tetrandrine micelles had a suitable particle size (90 nm) for permeating tumour tissue. The zeta potential of the targeting micelles was 8.37 mV after hydrolysis by HAase solution. Results of in vitro experiments indicated that HA/CPP modified paclitaxel plus tetrandrine micelles + HAase could enhance the intracellular uptake, inhibit the formation of neovascularization, block the process of EMT and destroy the invasion and metastasis. In vivo assays indicated that HA/CPP modified paclitaxel plus tetrandrine micelles could be selectively accumulated into tumour sites and exhibited the strong antitumor activity with negligible toxicity. These results suggested that HA/CPP modified paclitaxel plus tetrandrine micelles might provide a new strategy for treating gastric cancer.


Subject(s)
Antineoplastic Agents, Phytogenic/pharmacology , Benzylisoquinolines/pharmacology , Micelles , Paclitaxel/pharmacology , Stomach Neoplasms/drug therapy , Animals , Antineoplastic Agents, Phytogenic/administration & dosage , Benzylisoquinolines/administration & dosage , Cell Line, Tumor , Cell Proliferation/drug effects , Cell Survival/drug effects , Drug Carriers/administration & dosage , Drug Carriers/chemistry , Drug Combinations , Drug Liberation , Humans , Mice , Mice, Inbred BALB C , Paclitaxel/administration & dosage , Phosphatidylethanolamines/chemistry , Polyethylene Glycols/chemistry , Surface Properties
14.
Oncol Rep ; 41(3): 1549-1559, 2019 Mar.
Article in English | MEDLINE | ID: mdl-30747217

ABSTRACT

The present study aimed to further explore the molecular mechanisms of miRNA-223 in non-small cell lung cancer (NSCLC). Data prospectively collected from NSCLC patients and volunteers from March 2016 to MayMAP2016 at Tsinghua Changgung Hospital were analyzed. Cell proliferation was measured using MTT assay, while cell apoptosis and caspase-3/9 activity were measured using flow cytometry and caspase-3/9 activity kit. Bax, EGFR, PI3K and p-Akt protein were also investigated using western blotting. The results revealed that the serum levels of miRNA-223 in NSCLC patients were downregulated. In an inMAPvitro model, over-expression of miRNA-223 induced apoptosis while reducing cell proliferation. In contrast, downregulation of the expression of miRNA-223 inhibited apoptosis whereas it increased cell proliferation. Meanwhile, overexpression of miRNA-223 suppressed the protein expression of EGFR, PI3K and p-Akt in NSCLC cells. An EGFR inhibitor promoted the anticancer effects of miRNA-223 in NSCLC cells through the EGFR/PI3K/AKT pathway. Meanwhile, a PI3K inhibitor increased the anticancer effects of miRNA-223 in NSCLC cells through the PI3K/AKT pathway. Thus, a new pathway has been identified in the present study, and application of miRNA-223 may induce the apoptosis of NSCLC through the PI3K/AKT pathway by EGFR.


Subject(s)
Carcinoma, Non-Small-Cell Lung/genetics , Lung Neoplasms/genetics , MicroRNAs/genetics , Phosphatidylinositol 3-Kinases/genetics , Proto-Oncogene Proteins c-akt/genetics , Signal Transduction/genetics , A549 Cells , Apoptosis/genetics , Carcinoma, Non-Small-Cell Lung/pathology , Cell Line, Tumor , Cell Movement/genetics , Cell Proliferation/genetics , Down-Regulation/genetics , ErbB Receptors/genetics , Female , Gene Expression Regulation, Neoplastic/genetics , Humans , Lung Neoplasms/pathology , Male , Middle Aged
15.
Mycopathologia ; 184(2): 295-301, 2019 Apr.
Article in English | MEDLINE | ID: mdl-30805832

ABSTRACT

Talaromyces (Penicillium) marneffei can cause fatal disseminated infection in immunocompromised hosts. However, therapeutic strategies for the mycosis are limited. Reports of the other fungi suggest that berberine, a component of traditional herb, inhibitors interact with antifungal agents to improve the treatment outcomes. In the study, we evaluated the in vitro efficacy of berberine in combination with conventional antifungal agents against the pathogenic yeast form of T. marneffei. We demonstrate the synergistic effect of combination of berberine with fluconazole (52.38%), itraconazole (66.67%), voriconazole (71.43%), amphotericin B (71.43%) or caspofungin (52.38%) of T. marneffei strains, respectively. Time-kill curves confirmed the synergistic interaction, and no antagonistic was observed in all of the combinations. In conclusion, berberine could enhance the efficacy of conventional antifungal agents against the yeast form of T. marneffei in vitro. The results indicated berberine might have a potential role in combination therapy for talaromycosis.


Subject(s)
Antifungal Agents/pharmacology , Berberine/pharmacology , Drug Synergism , Talaromyces/drug effects , Amphotericin B/pharmacology , Azoles/pharmacology , Caspofungin/pharmacology , Microbial Sensitivity Tests , Microbial Viability/drug effects
16.
Molecules ; 23(8)2018 Jul 27.
Article in English | MEDLINE | ID: mdl-30060516

ABSTRACT

We report the highly efficient and chemoselective oxidation of benzylic alcohols catalyzed by sodium copper chlorophyllin in water, producing corresponding arylcarbonyl compounds. Importantly, the catalytic system exhibits a wide substrate scope and high functional group tolerance. Moreover, secondary alcohols and even diarylmethanes were smoothly oxidized to the desired aryl ketones with excellent yields.


Subject(s)
Benzyl Compounds/chemistry , Chlorophyllides/chemistry , Methane/chemistry , Alcohols/chemistry , Catalysis , Molecular Structure , Oxidation-Reduction , Water/chemistry
17.
Reprod Sci ; 25(12): 1619-1628, 2018 12.
Article in English | MEDLINE | ID: mdl-29361889

ABSTRACT

A growing body of evidence suggests that the dysregulation of long noncoding RNA is increasingly linked to many human diseases. Maternally expressed gene 3 ( MEG3) is one such gene thought to be affected. In the placenta of patients with preeclampsia, there is reduced expression of MEG3; however, its role and the mechanism involved are not clear. Therefore, we examined the expression of MEG3, epithelial-mesenchymal transition (EMT) markers (E-cadherin and N-cadherin), and TGF-ß/smad signaling pathway genes ( TGF-ß1, smad3, and smad7) in the placental tissues of 20 patients with preeclampsia and 20 healthy patients. We further observed the impact of MEG3 on the invasion and migration functions of human trophoblast cells and the effects on EMT and TGF-ß/smad signaling pathways in an Human trophoblast cell-8 (HTR-8)Vneo cell line. The expression of MEG3 was lower in tissues from patients with preeclampsia having an EMT decline, as well as a messenger RNA expression of smad7. The expression of TGF-ß1 and smad3 were higher in patients with preeclampsia. In HTR-8/SVneo cells with overexpressed MEG3, the invasion and migration functions were enhanced and accompanied by higher EMT and a significantly increased expression of smad7. Our data indicate that MEG3 is closely associated with the pathogenesis of preeclampsia and thus associated with changes in the EMT of placental trophoblast cells. These results indicate that MEG3 regulation of trophoblast cell EMT via the TGF-ß pathway inhibitor smad7 may be the molecular mechanism involved in the pathogenesis of preeclampsia.


Subject(s)
Pre-Eclampsia/metabolism , RNA, Long Noncoding/metabolism , Trophoblasts/metabolism , Adult , Cadherins/metabolism , Cell Movement/physiology , Epithelial-Mesenchymal Transition/physiology , Female , Humans , Pre-Eclampsia/genetics , Pregnancy , RNA, Long Noncoding/genetics , Signal Transduction/physiology , Smad Proteins/metabolism , Transforming Growth Factor beta/metabolism
18.
Sichuan Da Xue Xue Bao Yi Xue Ban ; 48(2): 314-317, 2017 Mar.
Article in Chinese | MEDLINE | ID: mdl-28612548

ABSTRACT

OBJECTIVES: To explore the clinical value of resection of bilateral fallopian tubes in patients with benign uterine diseases who received (laparoscopic) hysterectomy or subhysterectomy through the postoperative pathologic analysis of resected fallopian tubes. METHODS: A retrospective analysis was conducted to review the histopathological examination results in 1 272 women who underwent (laparoscopic) total hysterectomy or subtotal hysterectomy and the removal of bilateral fallopian tube simultaneously due to uterine leiomyoma, adenomyosis and other benign lesions from December 2010 to December 2015. RESULTS: Of the 1 272 patients, laparoscopic resection was underwent in 1 005 patients (79.01%) and laparotomy in 267 patients (20.99%). In the attachment area, 334 patients (26.26%) had tenderness signs, and 401 patients (31.53%) had signs of thickening. Total 2 498 fallopian tubes were removed. There were 1 654 tubal with no obvious abnormal appearance (66.21%), 636 tubal with lumen part of the uplift (25.46%), 128 fallopian tube with congestion and swelling (5.12%), 80 fallopian tube atrophy adhesions (3.20%). Pathological. RESULTS: showed 2 386 (95.52%) fallopian tubes with chronic fallopian tube inflammation, 988 (39.55%) of fallopian tube cyst, 80 (3.20%) of normal fallopian tube, 78 (3.12%) of tubal effusion, 48 (1.92% ) of tubal hyperplasia, 4 (0.26%) of tubal benign tumor, 8 (0.32%) of tubal mucosa atypical hyperplasia change and 2(0.08%) of tubal cancer. In the 10 cases of fallopian tube cancer and atypical hyperplasia, 8 had obvious changes of chronic inflammation in the contralateral fallopian tube, including 7 cases of atypical hyperplasia and 1 case of fallopian tube cancer. CONCLUSION: Prophylactic salpingectomy can prevent the occurrence of tubal inflammation and removal cancer incentives.


Subject(s)
Fallopian Tubes/pathology , Hysterectomy , Salpingectomy , Uterine Diseases/pathology , Fallopian Tube Neoplasms/diagnosis , Female , Humans , Retrospective Studies
19.
Ultrastruct Pathol ; 41(3): 245-251, 2017.
Article in English | MEDLINE | ID: mdl-28414554

ABSTRACT

OBJECTIVE: To investigate the antitumour efficacy of pachymic acid (PA), which is a fungal extract component, on nasopharyngeal carcinoma (NPC) cells CNE-1, CNE-2. METHODS: We have chosen NPC cell line CNE-2 for the study, and the cells were treated with PA before the detection. CCK-8 assay was used to detect the proliferative ability, and Annexin V-PI double staining was used for the detection of apoptosis rate; and the nucleus damage was detected by transmission electron microscope, the protein expression of the DNA damage pathway were detected by Western blot. RESULTS: PA can significantly inhibited proliferation of CNE-1, CNE-2 cells. The proportion of apoptotic cells of all cell lines gradually increased in a dose-dependent manner induced by PA, P < 0.05. Meanwhile, the nucleus could be caused morphological changes and the expression of DNA damage-related proteins was upregulated by PA in CNE-2. CONCLUSIONS: PA can significantly inhibit cell proliferation and increase the apoptosis rates and may induce the apoptosis of the human NPC cells.


Subject(s)
Antineoplastic Agents/pharmacology , Carcinoma/pathology , Cell Proliferation/drug effects , Nasopharyngeal Neoplasms/pathology , Triterpenes/pharmacology , Apoptosis/drug effects , Carcinoma/drug therapy , Cell Count/methods , Cell Line, Tumor , Humans , Nasopharyngeal Carcinoma , Nasopharyngeal Neoplasms/drug therapy
20.
J Biomed Nanotechnol ; 11(9): 1568-82, 2015 Sep.
Article in English | MEDLINE | ID: mdl-26485927

ABSTRACT

Regular chemotherapy cannot eradicate invasive breast cancer cells and the residual cancer cells will form vasculogenic mimicry (VM) channels under hypoxic conditions to provide nutrients for cancer masses prior to angiogenesis. This phenomenon is a major reason for the recurrence of invasive breast cancer after treatment. In this study, a novel type of targeted liposomes was developed by modifying a mitochondria-tropic material, D-a-tocopheryl polyethylene glycol 1000 succinate- triphenylphosphine conjugate (TPGS1000-TPP), to encapsulate sunitinib and vinorelbine separately and a combination of the two targeted drug liposomes was used to treat invasive breast cancer as well as VM channels. Evaluations were performed in breast cancer MCF-7 cells and highly invasive breast cancer MDA-MB-435S cells in vitro and in mice. The results determined that the functional material (TPGS1000-TPP) and suitable size of the liposomes (90-100 nm) resulted in prolonged blood circulation, an enhanced permeability retention (EPR) effect in cancer tissue, and a mitochondrial targeting effect. Targeted drug liposomes were internalized via cellular uptake and accumulated in the mitochondria of invasive breast cancer cells or VM channel-forming cancer cells to induce acute cytotoxic injury and apoptosis. Activated apoptotic enzymes caspase 9 and caspase 3 as well as down-regulated VM channel-forming indicators (MMP-9, EphA2, VE-Cadherin, FAK and HIF-1α) contributed to significantly enhanced efficacy. Therefore, a combination of targeted sunitinib liposomes and targeted vinorelbine liposomes may provide an effective strategy for treating invasive breast cancer and prevent relapse arising from VM channels.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/chemical synthesis , Breast Neoplasms/drug therapy , Liposomes/chemistry , Nanocapsules/chemistry , Nanocomposites/chemistry , Animals , Breast Neoplasms/pathology , Diffusion , Female , Indoles/administration & dosage , MCF-7 Cells , Materials Testing , Mice , Mice, Inbred BALB C , Mice, Nude , Nanocapsules/administration & dosage , Nanocapsules/ultrastructure , Nanocomposites/administration & dosage , Nanocomposites/ultrastructure , Neoplasm Invasiveness , Particle Size , Pyrroles/administration & dosage , Sunitinib , Surface Properties , Treatment Outcome , Tumor Burden/drug effects , Vinblastine/administration & dosage , Vinblastine/analogs & derivatives , Vinorelbine
SELECTION OF CITATIONS
SEARCH DETAIL
...