ABSTRACT
This study aims to systematically review the clinical features and outcome indicators in randomized controlled trial(RCT) of traditional Chinese medicine(TCM) intervention in septic kidney injury and provide a reference for optimizing clinical study design and building the core outcome set(COS) of TCM treatment of septic kidney injury. Computer searches were conducted on PubMed, Cochrane Library, EMbase, Web of Science, CNKI, Wanfang, VIP, and SinoMed to find published RCT of TCM intervention in septic kidney injury in the past five years, extract the basic characteristics, intervention measures, outcome indicators, and other data of included studies, and conduct descriptive analysis. 53 RCTs were included, and the sample size was mostly concentrated in 60-80 cases, with abdominal infection being the most common(15 articles, 83.3%) and the TCM syndrome of blood stasis being the most frequent(9 articles, 50.0%). The frequency of intervention methods from high to low were TCM decoction(28 articles, 52.8%), Chinese patent medicine(22 articles, 41.5%), and combined TCM therapy(3 articles, 7.5%); the intervention time of the trial was more than 7 d(34 articles, 69.4%). The risk of bias in included studies was unclear. A total of 84 outcome indicators were involved, which were divided into 9 fields, including 63 physical and chemical tests(305 times, 72.2%), 4 kinds of disease degree(48 times, 11.6%), 4 kinds of clinical effective rate(15 times, 3.6%), 1 kind of quality of life(1 time, 0.2%), 2 kinds of economic evaluation(14 times, 3.3%), 1 kind of TCM disease(9 times, 2.1%), 2 kinds of long-term prognosis(16 times, 3.8%), 2 kinds of safety events(6 times, 1.4%), and 5 other indicators(8 times, 0.7%). The cumulative frequency was 422 times, among which the outcome indicators with higher frequency were inflammatory factors(42 articles, 79.2%) and markers of renal function and kidney injury(40 articles, 75.5%). Only 1(1.9%) of the included articles mentioned primary and secondary outcome indicators, and 6 articles(11.3%) mentioned safety events, 13 articles(24.5%) mentioned economic assessment. The RCT quality of TCM intervention in septic renal injury was generally low, and the reference standards for sepsis, kidney injury, and TCM syndrome diagnosis were not uniform. There are some problems in outcome indicators, such as unclear distinction between primary and secondary indicators, neglect of endpoint indicators, lack of application of TCM characteristic indicators, and insufficient attention to safety events and economic assessment. It is suggested that the quality of clinical research methodology should be improved in the future, and the COS should be constructed to provide high-level evidence-based evidence for TCM intervention in septic kidney injury.
Subject(s)
Drugs, Chinese Herbal , Medicine, Chinese Traditional , Randomized Controlled Trials as Topic , Sepsis , Humans , Drugs, Chinese Herbal/therapeutic use , Sepsis/drug therapy , Male , Treatment Outcome , Female , Aged , Adult , Middle Aged , Acute Kidney Injury/drug therapy , Acute Kidney Injury/therapyABSTRACT
Acute kidney injury (AKI) caused by anti-tumor drugs, such as cisplatin, is a severe complication with no effective treatment currently, leading to the reduction or discontinuation of chemotherapy. Natural products or herbal medicines are gradually considered as promising agents against cisplatin-induced AKI with the advantages of multi-targeting, multi-effects, and less resistance. In this study, we investigated the effects of kaempferide, a natural flavonoid extracted from the rhizome of Kaempferia galanga, in experimental AKI models in vitro and in vivo. We first conducted pharmacokinetic study in mice and found a relative stable state of kaempferide with a small amount of conversion into kaempferol. We showed that both kaempferide (10 µM) and kaempferol (10 µM) significantly inhibited cisplatin-caused injuries in immortalized proximal tubule epithelial cell line HK-2. In AKI mice induced by injection of a single dose of cisplatin (15 mg/kg), oral administration of kaempferide (50 mg/kg) either before or after cisplatin injection markedly improved renal function, and ameliorated renal tissue damage. We demonstrated that kaempferide inhibited oxidative stress and induced autophagy in cisplatin-treated mice and HK-2 cells, thus increasing tubular cell viability and decreasing immune responses to attenuate the disease progression. In addition, treatment with kaempferide significantly ameliorated ischemia-reperfusion-induced renal injury in vitro and in vivo. We conclude that kaempferide is a promising natural product for treating various AKI. This study has great implications for promotion of its use in healthcare products, and help to break through the limited use of cisplatin in the clinic.
Subject(s)
Acute Kidney Injury , Cisplatin , Mice , Animals , Cisplatin/pharmacology , Kaempferols/pharmacology , Kaempferols/therapeutic use , Acute Kidney Injury/chemically induced , Acute Kidney Injury/drug therapy , Acute Kidney Injury/pathology , Oxidative Stress , Autophagy , Apoptosis , Mice, Inbred C57BLABSTRACT
Macrophages play a critical role in the pathogenesis of acetaminophen (APAP)-induced liver injury (AILI), a major cause of acute liver failure or even death. Sapidolide A (SA) is a sesquiterpene lactone extracted from Baccaurea ramiflora Lour., a folk medicine used in China to treat inflammatory diseases. In this study, we investigated whether SA exerted protective effects on macrophages, thus alleviated the secondary hepatocyte damage in an AILI. We showed that SA (5-20 µM) suppressed the phosphorylated activation of NF-κB in a dose-dependent manner, thereby inhibiting the expression and activation of the NOD-like receptor protein 3 (NLRP3) inflammasome and pyroptosis in LPS/ATP-treated mouse bone marrow-derived primary macrophages (BMDMs). In human hepatic cell line L02 co-cultured with BMDMs, SA (10 µM) protected macrophages from the pyroptosis induced by APAP-damaged L02 cells. Moreover, SA treatment reduced the secondary liver cell damage aggravated by the conditioned medium (CM) taken from LPS/ATP-treated macrophages. The in vivo assessments conducted on mice pretreated with SA (25, 50 mg/kg, ip) then with a single dose of APAP (400 mg/kg, ip) showed that SA significantly alleviated inflammatory responses of AILI by inhibiting the expression and activation of the NLRP3 inflammasome. In general, the results reported herein revealed that SA exerts anti-inflammatory effects by regulating NLRP3 inflammasome activation in macrophages, which suggests that SA has great a potential for use in the treatment of AILI patients.
Subject(s)
Inflammasomes , NLR Family, Pyrin Domain-Containing 3 Protein , Acetaminophen , Adenosine Triphosphate/metabolism , Animals , Humans , Inflammasomes/metabolism , Lipopolysaccharides/pharmacology , Liver/metabolism , Macrophages/metabolism , Mice , Mice, Inbred C57BL , NLR Family, Pyrin Domain-Containing 3 Protein/metabolism , NLR Proteins/metabolismABSTRACT
Synthetic glucocorticoids (GCs) have been widely used in the treatment of a broad range of inflammatory diseases, but their clinic use is limited by undesired side effects such as metabolic disorders, osteoporosis, skin and muscle atrophies, mood disorders and hypothalamic-pituitary-adrenal (HPA) axis suppression. Selective glucocorticoid receptor modulators (SGRMs) are expected to have promising anti-inflammatory efficacy but with fewer side effects caused by GCs. Here, we reported HT-15, a prospective SGRM discovered by structure-based virtual screening (VS) and bioassays. HT-15 can selectively act on the NF-κB/AP1-mediated transrepression function of glucocorticoid receptor (GR) and repress the expression of pro-inflammation cytokines (i.e., IL-1ß, IL-6, COX-2, and CCL-2) as effectively as dexamethasone (Dex). Compared with Dex, HT-15 shows less transactivation potency that is associated with the main adverse effects of synthetic GCs, and no cross activities with other nuclear receptors. Furthermore, HT-15 exhibits very weak inhibition on the ratio of OPG/RANKL. Therefore, it may reduce the side effects induced by normal GCs. The bioactive compound HT-15 can serve as a starting point for the development of novel therapeutics for high dose or long-term anti-inflammatory treatment.
Subject(s)
Glucocorticoids , Receptors, Glucocorticoid , Anti-Inflammatory Agents/pharmacology , Biological Assay , Glucocorticoids/pharmacology , Prospective Studies , Receptors, Glucocorticoid/metabolismABSTRACT
Ledrinae is a unique group of leafhoppers with a distinct appearance. Petalocephala is the largest Ledrinae genus that is difficult to identify except by dissecting the male genitals. To date, research on Ledrinae is relatively less compared with other leafhoppers. Therefore, to better understand this group, we sequenced and analyzed three complete Petalocephala mitochondrial genomes. We comparatively analyzed these general Petalocephala genomic features (including size, AT content, AT/GC skew, 13 protein-coding gene nucleotide compositions, etc.), and predicted 22 transfer RNA secondary structures. We obtained highly consistent phylogenetic results within Cicadellidae based on mitogenomic data using the maximum likelihood and Bayesian methods. Our results showed that all subfamilies were monophyletic and had a high node support rate, and there was a sister group relationship between Ledrinae and all other leafhopper groups. Furthermore, treehoppers were found to originate from leafhoppers and showed sister group relationships with Megophthalminae. Within Ledrinae, all phylogenetic trees supporting phylogenetic relationships were as follows: ([P. dicondylica + P. gongshanensis] + [Tituria pyramidata + [Ledra auditura + P. gongshanensis]]) Based on the complete mitogenome phylogenetic analysis and the comparison of morphological characteristics, we propose that Petalocephala is not monophyletic.
Subject(s)
Genome, Mitochondrial , Hemiptera , Animals , Base Composition , Bayes Theorem , PhylogenyABSTRACT
Plant architecture plays a major role in canopy photosynthesis and biomass production, and plants adjust their growth (and thus architecture) in response to changing environments. Leaf angle is one of the most important traits in rice (Oryza sativa L.) plant architecture, because leaf angle strongly affects leaf direction and rice production, with more-erect leaves being advantageous for high-density plantings. The degree of leaf bending depends on the morphology of the lamina joint, which connects the leaf and the sheath. In this review, we discuss cell morphology in different lamina joint tissues and describe the underlying genetic network that governs this morphology and thus regulates leaf direction. Furthermore, we focus on the mechanism by how environmental factors influence rice leaf angle. Our review provides a theoretical framework for the future genetic improvement of rice leaf orientation and plant architecture.
Subject(s)
Oryza/physiology , Plant Growth Regulators/physiology , Plant Leaves/physiology , Environment , Oryza/anatomy & histology , Oryza/cytology , Plant Cells , Plant Leaves/anatomy & histology , Plant Leaves/growth & development , Plant Proteins/genetics , Plant Proteins/metabolismABSTRACT
OBJECTIVES: Our study purpose was to detect the distribution of anti-nuclear antibody (ANA) IgG subclasses in patients with systemic lupus erythematosus (SLE) and to evaluate their influence on the inflammatory process in SLE. METHODS: We determined the serum levels of ANA IgG subclasses from 70 SLE patients, 25 patients with other autoimmune diseases (OAD), and 25 healthy controls using ELISA. The serum level of total ANA IgG and the avidity of ANA IgG, dsDNA IgG, and dsDNA IgG subclasses were analysed by ELISA. RESULTS: The results indicated that levels of four ANA IgG subclasses (IgG1, IgG2, IgG3 and IgG4) and total IgG were significantly higher in SLE patients than in OAD patients and healthy controls (p < 0.001). Moreover, the level of each ANA IgG subclass and the prevalence of high-avidity IgG ANAs (HA IgG ANAs) were significantly higher in the active cases than in the inactive cases of SLE and LN. Furthermore, level of ANA IgG subclasses decreased as level of dsDNA IgG subclasses decreased in 30 patients with SLE. In comparison, ANA IgG3 was significantly effective in high-dose prednisone combined with hydroxychloroquine (p = 0.025). Additionally, it revealed that level of dsDNA IgG had a significant influence on four ANA IgG subclasses, especially on ANA IgG3 (ß coefficient = 0.649, p < 0.001). Level of ANA IgG3 was also positively related to the serum level of dsDNA IgG (r = 0.729, p < 0.001) and RAI of HA IgG ANAs (r = 0.504, p < 0.001). However, the level of ANA IgG4 was positively related to the serum level of albumin (r = 0.572, p < 0.001) and RAI of HA IgG ANAs (r = 0.549, p < 0.001). Moreover, the results revealed that cutaneous and renal involvement were mainly associated with the ANA IgG1 and IgG4 subclasses. Although, arthritic involvement was mainly associated with ANA IgG3. CONCLUSIONS: First, we demonstrated that the ANA IgG subclasses were diagnostic tools in SLE patients. Furthermore, HA IgG ANAs might affect the distribution of ANA IgG3 and IgG4. Moreover, ANA IgG3 might play a particular role in the activity of SLE disease and therapy. Therefore, an altered ANA IgG subclass distribution might be a risk factor influencing the inflammatory process in SLE.
Subject(s)
Antibodies, Antinuclear/analysis , Immunoglobulin G/analysis , Lupus Erythematosus, Systemic/immunology , Adolescent , Adult , Aged , Antibody Specificity , Case-Control Studies , Child , Enzyme-Linked Immunosorbent Assay , Female , Humans , Linear Models , Lupus Erythematosus, Systemic/blood , Male , Middle Aged , Young AdultABSTRACT
Cisplatin is a clinically advanced and highly effective anticancer drug used in the treatment of a wide variety of malignancies, such as head and neck, lung, testis, ovary, breast cancer, etc. However, it has only a limited use in clinical practice due to its severe adverse effects, particularly nephrotoxicity; 20%-35% of patients develop acute kidney injury (AKI) after cisplatin administration. The nephrotoxic effect of cisplatin is cumulative and dose dependent and often necessitates dose reduction or withdrawal. Recurrent episodes of AKI result in impaired renal tubular function and acute renal failure, chronic kidney disease, uremia, and hypertensive nephropathy. The pathophysiology of cisplatin-induced AKI involves proximal tubular injury, apoptosis, oxidative stress, inflammation, and vascular injury in the kidneys. At present, there are no effective drugs or methods for cisplatin-induced kidney injury. Recent in vitro and in vivo studies show that numerous natural products (flavonoids, saponins, alkaloids, polysaccharide, phenylpropanoids, etc.) have specific antioxidant, anti-inflammatory, and anti-apoptotic properties that regulate the pathways associated with cisplatin-induced kidney damage. In this review we describe the molecular mechanisms of cisplatin-induced nephrotoxicity and summarize recent findings in the field of natural products that undermine these mechanisms to protect against cisplatin-induced kidney damage and provide potential strategies for AKI treatment.
Subject(s)
Acute Kidney Injury/drug therapy , Acute Kidney Injury/prevention & control , Antineoplastic Agents/toxicity , Biological Products/therapeutic use , Cisplatin/toxicity , Protective Agents/therapeutic use , Acute Kidney Injury/chemically induced , Acute Kidney Injury/etiology , Animals , Apoptosis/drug effects , Humans , Inflammation/drug therapy , Kidney/drug effects , Oxidative Stress/drug effectsABSTRACT
BACKGROUND Two diagnostic models of prostate cancer (PCa) and clinically significant prostate cancer (CS-PCa) were established using clinical data of among patients whose prostate-specific antigen (PSA) levels are in the gray area (4.0-10.0 ng/ml). MATERIAL AND METHODS Data from 181 patients whose PSA levels were in the gray area were retrospectively analyzed, and the following data were collected: age, digital rectal examination, total PSA, PSA density (PSAD), free/total PSA (f/t PSA), transrectal ultrasound, multiparametric magnetic resonance imaging (mpMRI), and pathological reports. Patients were diagnosed with benign prostatic hyperplasia (BPH) and PCa by pathology reports, and PCa patients were separated into non-clinically significant PCa (NCS-PCa) and CS-PCa by Gleason score. Afterward, predictor models constructed by above parameters were researched to diagnose PCa and CS-PCa, respectively. RESULTS According to the analysis of included clinical data, there were 109 patients with BPH, 44 patients with NCS-PCa, and 28 patients with CS-PCa. Regression analysis showed PCa was correlated with f/t PSA, PSAD, and mpMRI (P<0.01), and CS-PCa was correlated with PSAD and mpMRI (P<0.01). The area under the receiver operating characteristic curves of 2 models for PCa (sensitivity=73.64%, specificity=64.23%) and for CS-PCa (sensitivity=71.41%, specificity=81.82%) were 0.79 and 0.87, respectively. CONCLUSIONS The prediction models had satisfactory diagnostic value for PCa and CS-PCa among patients with PSA in the gray area, and use of these models may help reduce overdiagnosis.
Subject(s)
Kallikreins/blood , Models, Statistical , Prostate-Specific Antigen/blood , Prostatic Hyperplasia/diagnosis , Prostatic Neoplasms/diagnosis , Age Factors , Aged , Biopsy/statistics & numerical data , Diagnosis, Differential , Digital Rectal Examination/statistics & numerical data , Humans , Male , Medical Overuse/prevention & control , Multiparametric Magnetic Resonance Imaging/statistics & numerical data , Neoplasm Grading , Prostate/diagnostic imaging , Prostate/pathology , Prostatic Hyperplasia/blood , Prostatic Hyperplasia/pathology , Prostatic Neoplasms/blood , Prostatic Neoplasms/pathology , ROC Curve , Reference Values , Retrospective Studies , Risk Assessment/methods , Ultrasonography/statistics & numerical dataABSTRACT
BACKGROUND: To evaluate the utility of the process capability indices Cp and Cpk for assessing the quality control processes at chain laboratory facilities. METHODS: In April 2020, the minimum Cp and Cpk values for 33 assays of a laboratory chain with 19 facilities were collected for further analysis and a total of 627 datasets (Cp and Cpk ) were compared. In addition, standard values for Cp and Cpk , defined as the lowest of the top 20%, were obtained for comparison and the indices were used to determine whether precision or trueness improvements were required for the corresponding assay. RESULTS: A total of 627 datasets of 33 assays from 19 laboratory facilities were collected for further analysis. Based on the Cp results, 329 (52.5%), 211 (33.7%), 65 (10.3%), and 22 (3.5%) were rated as excellent, good, marginal, and poor, respectively. While the corresponding results for Cpk were 300 (47.8%), 216 (34.4%), 79 (12.6%), and 32 (5.1%). In addition, it was noteworthy that eight (Cp criteria) and six assays (Cpk criteria) were rated as excellent or good at all 19 facilities. Comparison of the process capability indices at the Jinan KingMed Center with the standard values revealed that total protein, albumin, and urea showed trueness individual improvement, precision individual improvement, and precision common improvement, respectively, while the results of other assays were stable. CONCLUSION: Process capability indices are useful for evaluating the quality control procedures in laboratory facilities and can help improve the precision and trueness of laboratory tests.
Subject(s)
Laboratories, Clinical/standards , Quality Control , Blood Chemical Analysis/standards , China , HumansABSTRACT
Three previously unidentified polycyclic polyprenylated acylphloroglucinols (PPAPs) derivatives, hypseudohenrins I-K (1-3), along with a known analogue hyphenrone X (4), were isolated from the aerial part of Hypericum pseudohenryi. The structures of the new compounds were elucidated by NMR spectroscopy and ECD calculation. The anti-inflammatory activity of the compounds was evaluated. Compounds 1-3 showed mild anti-inflammatory activity while hyphenrone X showed prominent anti-inflammatory activity.[Formula: see text].
Subject(s)
Hypericum , Magnetic Resonance Spectroscopy , Molecular Structure , Phloroglucinol/pharmacologyABSTRACT
Polycyclic polyprenylated acylphloroglucinols (PPAPs) were mainly obtained from the plants of Hypericum genus of Guttiferae family, and possessed intriguing chemical structures and appealing biological activities. Two new PPAPs derivatives, hyperacmosin C (1) and hyperacmosin D (2) were isolated from H. acmosepalum. Their structures were established by NMR, HREIMS, and experimental electronic circular dichroism spectra. Besides, compound 1 showed significant hepatoprotective activity at 10 µM against paracetamol-induced HepG2 cell damage and compound 2 could moderately increase the relative glucose consumption.
Subject(s)
Hypericum , Circular Dichroism , Magnetic Resonance Spectroscopy , Molecular Structure , Phloroglucinol/pharmacologyABSTRACT
In this study, we screened potential natural compounds for the treatment of myocardial infarction (MI) and explored the underlying mechanisms. We built three machine learning models to screen the potential compounds. qPCR, flow cytometry, immunohistochemistry, and immunofluorescence analyses were applied to analyze the pharmacological effects of the compounds on macrophages/monocytes in vivo and in vitro. Arctigenin (AG) was selected as a candidate, and echocardiography, Masson's trichrome staining, and TUNEL staining were utilized to detect the effect of AG on MI in vivo. Transcriptome analysis and subsequent bioinformatics analyses were performed to predict the target of the selected compound. Western blot and luciferase reporter assays were used to confirm the target and mechanism of AG. The reversibility of the effects of AG were verified through overexpression of NFAT5. The results showed that AG can improve cardiac injury after MI by reducing infarct size, improving heart function, and inhibiting cardiac death. In addition, AG suppresses inflammatory macrophages/monocytes and proinflammatory cytokines in vivo and in vitro. Transcriptomic and biological experiments revealed that AG modulates macrophage polarization via the NFAT5-induced signaling pathway. Therefore, our data suggest that AG can improve MI by inhibiting the inflammatory phenotype of macrophages/monocytes through targeting of NFAT5.
Subject(s)
Furans/pharmacology , Inflammation/metabolism , Lignans/pharmacology , Myocardial Infarction/metabolism , Transcription Factors , Animals , Heart/drug effects , Macrophages/drug effects , Macrophages/metabolism , Male , Mice , Mice, Inbred C57BL , Monocytes/drug effects , Monocytes/metabolism , Myocardium/cytology , Myocardium/pathology , RAW 264.7 Cells , Signal Transduction/drug effects , Transcription Factors/antagonists & inhibitors , Transcription Factors/metabolismABSTRACT
The accurate and rapid monitoring of the expression levels of enterovirus 71 (EV71)-related microRNAs (miRNAs) can contribute to diagnosis of hand, foot, and mouth disease (HFMD) at the early stage. However, there is currently a lack of convenient methods for simultaneous monitoring of multiplex miRNAs in one step. Herein a one-step method for the simultaneous monitoring of multiple EV71 infection-related miRNAs is developed based on core-satellite structure assembled with magnetic nanobeads and quantum dots (MNs-ssDNA-QDs). In the presence of target miRNAs, duplex-specific nuclease (DSN)-assisted target recycling can be triggered, resulting in the release of QDs and recycling of target miRNAs. Then the simultaneous quantification can be easily realized by recording the corresponding amplified fluorescence signal of QDs in the suspension. With this method, simultaneous detection of hsa-miRNA-296-5p and hsa-miRNA-16-5p, potential biomarkers of EV71 infection, can be easily achieved with femtomolar sensitivity and single-base mismatch specificity. Moreover, the method is successfully used for monitoring of the expression level of miRNAs in EV71-infected cells at different time points, demonstrating the potential for diagnostic applications. With the merits of one-step operation and single-nucleotide mismatch discrimination, this work opens a new avenue for multiplex miRNAs detection. As different nucleotide sequences and multicolor QDs can be employed, this work is expected to offer great potential for the development of high throughput diagnosis.
Subject(s)
Enterovirus A, Human/physiology , Enterovirus Infections/genetics , Host-Pathogen Interactions , MicroRNAs/genetics , Quantum Dots/chemistry , Biomarkers/analysis , Cell Line , DNA, Single-Stranded/chemistry , DNA, Single-Stranded/genetics , Enterovirus Infections/diagnosis , Gene Expression Regulation , Humans , Immobilized Nucleic Acids/chemistry , Immobilized Nucleic Acids/genetics , Magnetite Nanoparticles/chemistry , MicroRNAs/analysis , Spectrometry, Fluorescence/methodsABSTRACT
Three new polycyclic polyprenylated acylphloroglucinol derivatives, hyperacmosins H-J (1-3), with four known compounds (4-7), were isolated from the air-dried aerial parts of Hypericum acmosepalum. Especially, compounds 1 and 2 were identified as methylated polycyclic polyprenylated acylphloroglucinol derivatives (mPPAPs). Their structures were established by NMR, HRESIMS and experimental electronic circular dichroism (ECD) spectra. The hepatoprotective activity of seven compounds were evaluated. Compounds 1 and 5 exhibited hepatoprotective activity against paracetamol-induced HepG2 cell damage.[Formula: see text].
Subject(s)
Hypericum , Hep G2 Cells , Magnetic Resonance Spectroscopy , Molecular Structure , PhloroglucinolABSTRACT
The rapid and sensitive detection of pathogens is extremely crucial for timely clinical diagnosis and diseases control. Here, by employing cellular beacons with in situ synthesized QDs created from Staphylococcus aureus ( S. aureus), we efficiently fabricated an antibody (Ab) and acetylcholinesterase (AChE)-functionalized nanobioprobe, i.e., multifunctional cellular beacons (MCBs), avoiding complicated modification. Coupled with magnetic separation, a novel method for pathogen detection with the naked eye is established. With this method, enterovirus 71 (EV71) can be detected by the naked eye through the aggregation of gold nanoparticles that is triggered by the product of AChE catalyzed acetylthiocholine, with a detection limit of 0.5 ng/mL. Moreover, due to the MCBs have high luminance with perfect uniformity, the detection can also be realized by counting the number of MCBs, with a detection limit of 1 ng/mL. The method is validated with human throat swabs, resulting in a complete consistence with reverse transcription-polymerase chain reaction results. This study reports the first cellular beacons-based method for pathogen detection by the naked eye and broadens the applicability of cell self-synthesized nanoparticles-based immunoassays. Moreover, the MCBs-based method will provide a powerful tool for clinical detection.
Subject(s)
Biosensing Techniques , Pharynx/microbiology , Quantum Dots/chemistry , Staphylococcus aureus/isolation & purification , Acetylcholinesterase/chemistry , Acetylcholinesterase/metabolism , Antibodies/chemistry , Gold/chemistry , Humans , Nanostructures/chemistry , Real-Time Polymerase Chain Reaction , Staphylococcus aureus/geneticsABSTRACT
Autophagy is a sophisticated mechanism for maintaining cellular homeostasis, in which E1-like enzyme (ATG7) controls the activation of ubiquitin-like conjugation system in the autophagy pathway. In the insect pathogenic fungus Beauveria bassiana, a yeast ortholog of ATG7 was identified and functionally analyzed. Ablation of BbATG7 gene blocks the autophagic process under starvation stress. The mutant ΔBbATG7 exhibited impaired growth on the media with chitin as single nitrogen source. On rich media, gene loss did not cause notable effect on vegetative growth, but resulted in a considerable reduction in conidiation (71.6%) and blastospore yield (61.1%) in the mutant. In addition, the ΔBbATG7 mutant displayed increased sensitivity to stress caused by menadione and Congo red. The virulence of ΔBbATG7 mutant was significantly attenuated as indicated in topical and intrahemocoel injection assays. Our study indicates that BbATG7 contributes to B. bassiana virulence via regulating autophagy pathway and playing non-autophagic functions in the infection cycle.
Subject(s)
Autophagy-Related Protein 7/genetics , Autophagy/genetics , Beauveria/genetics , Animals , Beauveria/pathogenicity , Gene Deletion , Gene Expression Regulation, Fungal , Insecta/genetics , Insecta/microbiology , Spores, Fungal/genetics , Spores, Fungal/pathogenicity , Stress, Physiological/genetics , Virulence/geneticsABSTRACT
Mitofilin acts as an essential organizer that maintains the complex architecture of the mitochondrial inner membrane (IM). In the present study, a yeast ortholog of mitofilin was characterized in the filamentous entomopathogenic fungus Beauveria bassiana; hence, it was named BbMtf. Mitochondrial localization was observed for B. bassiana mitofilin, and loss of this protein altered both the overall morphology and crista junction of the mitochondrial IM. Disruption of BbMtf resulted in reduced ATP synthesis and germination on the oligotrophic surface compared to the control. The ΔBbMtf mutant did not display significant variation in mycelial growth and stress tolerance. However, the BbMtf gene was required for conidiation and blastospore formation, and its absence led to a significant reduction in conidiation (40%) and blastospore yield (70%) in the mutant strain compared to the control. In addition, the development of the ΔBbMtf mutant in the host hemocoel was also significantly impaired, with a reduction of approximately 80% in spore concentration. Finally, disruption of BbMtf significantly attenuated fungal pathogenicity against insect hosts. Mitofilin, therefore, maintains the function of the mitochondrial IM, which contributes to the development and virulence of B. bassiana as a biocontrol fungus.
Subject(s)
Beauveria/genetics , Fungal Proteins/genetics , Gene Expression Regulation, Fungal , Genes, Mitochondrial , Mitochondrial Membranes/metabolism , Beauveria/pathogenicity , Computational Biology , Gene Deletion , Mutation , Spores, Fungal/growth & development , Stress, Physiological/genetics , Virulence/geneticsABSTRACT
We examined the precise association between IL-10 levels and cardiovascular disease (CVD) prognosis and explored the pleiotropic role of IL-10 in different cardiac pathologies. We performed a meta-analysis of cross-sectional and longitudinal studies investigating IL-10 levels. Meta-regression analyses were used to determine the cause of the discrepancies. To assess publication bias, funnel plots were constructed, and Egger's tests were performed. Data from the GSE58015 dataset were used to investigate the levels of IL-10 under certain conditions. Because of substantial heterogeneity in the data used to compare the IL-10 levels between patients with CVD and healthy people, we could not determine the differences between the healthy controls and patients with ischemic or nonischemic pathologies (pâ¯>â¯0.05). The analysis of the association between IL-10 levels and CVD prognosis indicated that higher IL-10 levels were significantly associated with a poor prognosis in patients with nonischemic pathologies (HRâ¯=â¯1.10, 95% CIâ¯=â¯1.00-1.20, pâ¯=â¯0.043) but differentially associated with the prognosis of patients with ischemic pathologies based on the sampling time point (before percutaneous coronary intervention (PCI): HRâ¯=â¯4.90, 95% CIâ¯=â¯1.24-19.30, pâ¯<â¯0.001; after PCI: HRâ¯=â¯0.57, 95% CIâ¯=â¯0.43-0.75, pâ¯=â¯0.023). The meta-regression analysis showed that the pooled HR of the IL-10 levels was positively correlated with the IL-10/IL-6 ratio (ßâ¯=â¯0.644, pâ¯=â¯0.024). The funnel plots and Egger's tests revealed no statistically significant bias in our meta-analysis (pâ¯>â¯0.1). Furthermore, our data mining analysis supported our findings. Our analysis showed that IL-10 levels may be pleiotropically associated with the CVD prognosis possibly based on the type of pathology, disease stage and levels of other proinflammatory factors, such as IL-6.
Subject(s)
Cardiovascular Diseases/metabolism , Cardiovascular Diseases/pathology , Interleukin-10/metabolism , Aged , Case-Control Studies , Cross-Sectional Studies , Female , Humans , Interleukin-6/metabolism , Longitudinal Studies , Male , Middle Aged , Percutaneous Coronary Intervention/methods , PrognosisABSTRACT
Our aim was to evaluate the association of genetic polymorphisms of immunoregulatory molecules with susceptibility to hepatocellular carcinoma (HCC). The polymorphisms in CTLA-4 (-318 T/C, CT60 G/A), TNF (-238 G/A, -308 G/A) and IL10 (-592 C/A, -819 C/T) were genotyped by PCR and DNA sequencing. The functional relevance of the polymorphisms was examined by ELISAs, in vitro lymphocyte proliferation assay and cytotoxic assay. The CTLA-4 -318 TC/TT, CTLA-4 CT60 GG, IL10 -592 CA and -819 CT/TT variants, CTLA-4 -318 T and IL 10 -819 T alleles were positively associated with HCC risk (P < .05). While TNF -238 AA variant, TNF -238 A allele were associated with decreased risk of HCC (P < .05). Furthermore, combinations of CTLA-4 -318 TC/TT and TNF -238 GG/GA; CTLA-4 -318 TC/TT and IL 10 -819 CC; CTLA-4 -318 CC and IL 10 -819 CT/TT in patients with HCC were statistically significant (P < .05). Peripheral blood mononuclear cells (PBMCs) carrying -318 TC/TT genotypes exhibited significantly lower proliferation rates, decreased IL-2, IL-4 levels, fewer cytolytic activities and elevated TGF-ß levels. For IL 10 -819 C/T, the CC genotype was significantly associated with higher proliferation rate, decreased TGF-ß, IL-10 levels and higher cytolytic activities (P < .05). For TNF -238 G/A, the AA genotype only had association with serum IL-2, IL-4 (P < .05). In addition, we also found that CTLA-4 -318 T/C, IL-10 -819 T/C variants, combinations of CTLA-4 -318 CC with IL 10 -819 CT or TT, CTLA-4 -318 TC or TT with IL 10 -819 CT or TT were associated with the severity of HCC. These findings suggest that CTLA-4 -318 TC/TT and IL 10 -819 CT/TT could promote the pathogenesis of HCC, which might be related with down-regulation of Th1/Th2-type cytokines and/or up-regulation of Th3-type cytokines.