期刊文献+
共找到252,772篇文章
< 1 2 250 >
每页显示 20 50 100
The influence of resistance exercise training prescription variables on skeletal muscle mass,strength,and physical function in healthy adults:An umbrella review 被引量:1
1
作者 Jonathan C.Mcleod Brad S.Currier +1 位作者 Caroline V.Lowisz Stuart M.Phillips 《Journal of Sport and Health Science》 SCIE CSCD 2024年第1期47-60,共14页
Purpose:The aim of this umbrella review was to determine the impact of resistance training(RT)and individual RT prescription variables on muscle mass,strength,and physical function in healthy adults.Methods:Following ... Purpose:The aim of this umbrella review was to determine the impact of resistance training(RT)and individual RT prescription variables on muscle mass,strength,and physical function in healthy adults.Methods:Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses(PRISMA)guidelines,we systematically searched and screened eligible systematic reviews reporting the effects of differing RT prescription variables on muscle mass(or its proxies),strength,and/or physical function in healthy adults aged>18 years.Results:We identified 44 systematic reviews that met our inclusion criteria.The methodological quality of these reviews was assessed using A Measurement Tool to Assess Systematic Reviews;standardized effectiveness statements were generated.We found that RT was consistently a potent stimulus for increasing skeletal muscle mass(4/4 reviews provide some or sufficient evidence),strength(4/6 reviews provided some or sufficient evidence),and physical function(1/1 review provided some evidence).RT load(6/8 reviews provided some or sufficient evidence),weekly frequency(2/4 reviews provided some or sufficient evidence),volume(3/7 reviews provided some or sufficient evidence),and exercise order(1/1 review provided some evidence)impacted RT-induced increases in muscular strength.We discovered that 2/3 reviews provided some or sufficient evidence that RT volume and contraction velocity influenced skeletal muscle mass,while 4/7 reviews provided insufficient evidence in favor of RT load impacting skeletal muscle mass.There was insufficient evidence to conclude that time of day,periodization,inter-set rest,set configuration,set end point,contraction velocity/time under tension,or exercise order(only pertaining to hypertrophy)influenced skeletal muscle adaptations.A paucity of data limited insights into the impact of RT prescription variables on physical function.Conclusion:Overall,RT increased muscle mass,strength,and physical function compared to no exercise.RT intensity(load)and weekly frequency impacted RT-induced increases in muscular strength but not muscle hypertrophy.RT volume(number of sets)influenced muscular strength and hypertrophy. 展开更多
关键词 HYPERTROPHY resistance training resistance training prescription variables STRENGTH Umbrella review
下载PDF
Antibiotic resistance in Helicobacter pylori among children and adolescents in East Asia:A systematic review and meta-analysis 被引量:1
2
作者 Yuhang Zhou Yanli Zhang Shiyu Du 《Chinese Medical Journal》 SCIE CAS CSCD 2024年第16期1926-1938,共13页
Background:In East Asia,Helicobacter pylori(H.pylori)infection and related diseases are common,primarily during childhood and adolescence.The rates of primary antibiotic resistance in H.pylori among East Asian childre... Background:In East Asia,Helicobacter pylori(H.pylori)infection and related diseases are common,primarily during childhood and adolescence.The rates of primary antibiotic resistance in H.pylori among East Asian children and adolescents have not been extensively explored;few relevant systematic reviews or meta-analyses have been conducted.We evaluated the rates of antibiotic resistance in H.pylori among East Asian children and adolescents,with the goal of facilitating individualized treatment recommendations.Methods:We searched PubMed,Embase,and the Cochrane Library for studies in any language published up to February 2023 that explored antibiotic resistance in H.pylori among East Asian children and adolescents.We used MeSH and non-MeSH terms related to the topic,including terms related to children,adolescents,antibiotic resistance,H.pylori,and nations or regions.Additionally,we reviewed the reference lists of relevant articles.Studies that matched our strict predefined eligibility criteria were included in the screening process.Using established assessment methods,we evaluated the quality of the included studies.Results:We identified 15 observational studies involving 4831 H.pylori isolates,all published between 2001 and 2022.There was substantial primary antibiotic resistance in H.pylori isolates from East Asian children and adolescents.The rates of primary resistance were 51%(95%confidence interval[CI]:40-62%)for metronidazole;37%(95%CI:20-53%)for clarithromycin;19%(95%CI:11-28%)for levofloxacin;and less than 3%each for amoxicillin,tetracycline,and furazolidone.Subgroup analysis revealed a prominent increase in metronidazole resistance over time.Clarithromycin and levofloxacin resistance rates fluctuated between 2005 and 2015,then remained stable;other antibiotic resistance rates were generally stable.Metronidazole,clarithromycin,and levofloxacin resistance rates were significantly higher in the Chinese mainland than in other East Asian regions.The rates of dual and multiple antibiotic resistance were 28%(95%CI:21-36%)and 10%(95%CI:7-14%),highlighting the potential for diverse resistance patterns.Conclusions:H.pylori isolates from East Asian children and adolescents exhibit high levels of metronidazole and clarithromycin resistance,particularly in the Chinese mainland.The non-negligible rates of dual and multiple resistance highlight the complexity of this problem.Registration:PROSPERO,No.CRD42023402510. 展开更多
关键词 Antibiotic resistance PREVALENCE CHILDREN Adolescents
原文传递
Reversal of tamoxifen resistance by artemisinin in ER+breast cancer:bioinformatics analysis and experimental validation 被引量:1
3
作者 ZHILI ZHUO DONGNI ZHANG +4 位作者 WENPING LU XIAOQING WU YONGJIA CUI WEIXUAN ZHANG MENGFAN ZHANG 《Oncology Research》 SCIE 2024年第6期1093-1107,共15页
Breast cancer is the leading cause of cancer-related deaths in women worldwide,with Hormone Receptor(HR)+being the predominant subtype.Tamoxifen(TAM)serves as the primary treatment for HR+breast cancer.However,drug re... Breast cancer is the leading cause of cancer-related deaths in women worldwide,with Hormone Receptor(HR)+being the predominant subtype.Tamoxifen(TAM)serves as the primary treatment for HR+breast cancer.However,drug resistance often leads to recurrence,underscoring the need to develop new therapies to enhance patient quality of life and reduce recurrence rates.Artemisinin(ART)has demonstrated efficacy in inhibiting the growth of drug-resistant cells,positioning art as a viable option for counteracting endocrine resistance.This study explored the interaction between artemisinin and tamoxifen through a combined approach of bioinformatics analysis and experimental validation.Five characterized genes(ar,cdkn1a,erbb2,esr1,hsp90aa1)and seven drug-disease crossover genes(cyp2e1,rorc,mapk10,glp1r,egfr,pgr,mgll)were identified using WGCNA crossover analysis.Subsequent functional enrichment analyses were conducted.Our findings confirm a significant correlation between key cluster gene expression and immune cell infiltration in tamoxifen-resistant and-sensitized patients.scRNA-seq analysis revealed high expression of key cluster genes in epithelial cells,suggesting artemisinin’s specific impact on tumor cells in estrogen receptor(ER)-positive BC tissues.Molecular target docking and in vitro experiments with artemisinin on LCC9 cells demonstrated a reversal effect in reducing migratory and drug resistance of drug-resistant cells by modulating relevant drug resistance genes.These results indicate that artemisinin could potentially reverse tamoxifen resistance in ER-positive breast cancer. 展开更多
关键词 ARTEMISININ Tamoxifen resistance Breast cancer
下载PDF
Drug resistance mechanisms in cancers:Execution of prosurvival strategies 被引量:1
4
作者 Pavan Kumar Dhanyamraju 《Journal of Biomedical Research》 CAS CSCD 2024年第2期95-121,共27页
One of the quintessential challenges in cancer treatment is drug resistance.Several mechanisms of drug resistance have been described to date,and new modes of drug resistance continue to be discovered.The phenomenon o... One of the quintessential challenges in cancer treatment is drug resistance.Several mechanisms of drug resistance have been described to date,and new modes of drug resistance continue to be discovered.The phenomenon of cancer drug resistance is now widespread,with approximately 90% of cancer-related deaths associated with drug resistance.Despite significant advances in the drug discovery process,the emergence of innate and acquired mechanisms of drug resistance has impeded the progress in cancer therapy.Therefore,understanding the mechanisms of drug resistance and the various pathways involved is integral to treatment modalities.In the present review,I discuss the different mechanisms of drug resistance in cancer cells,including DNA damage repair,epithelial to mesenchymal transition,inhibition of cell death,alteration of drug targets,inactivation of drugs,deregulation of cellular energetics,immune evasion,tumor-promoting inflammation,genome instability,and other contributing epigenetic factors.Furthermore,I highlight available treatment options and conclude with future directions. 展开更多
关键词 cancer drug resistance MECHANISMS MICRORNAS treatment strategies
下载PDF
Identification of Fusarium wilt resistance gene SiRLK1 in Sesamum indicum L. 被引量:1
5
作者 Yinghui Duan Wenwen Qu +10 位作者 Shuxian Chang Ming Ju Cuiying Wang Cong Mu Hengchun Cao Guiting Li Qiuzhen Tian Qin Ma Zhanyou Zhang Haiyang Zhang Hongmei Miao 《The Crop Journal》 SCIE CSCD 2024年第1期252-261,共10页
Sesame Fusarium wilt(SFW),caused by Fusarium oxysporum f.sp.sesami(Fos),is one of the most devastating diseases affecting sesame cultivation.Deciphering the genetic control of SFW resistance is pivotal for effective d... Sesame Fusarium wilt(SFW),caused by Fusarium oxysporum f.sp.sesami(Fos),is one of the most devastating diseases affecting sesame cultivation.Deciphering the genetic control of SFW resistance is pivotal for effective disease management in sesame.An inheritance study on a cross between the highly resistant variety Yuzhi 11 and the highly susceptible accession Sp1 using a Fos pathogenicity group 1 isolate indicated that resistance was conferred by a single dominant allele.The target locus was located in a 1.24 Mb interval on chromosome 3 using a combination of cross-population association mapping and bulked segregant analysis.Fine genetic mapping further narrowed the interval between 21,350 and 21,401 kb.The locus Sindi_0812400 was identified as the SFW resistance gene and officially designated SiRLK1.This gene encodes a specific malectin/receptor-like protein kinase with three putative tandem kinase domains and is considered a kinase fusion protein.Sequence analysis revealed that a high proportion(49.44%)of variants within the locus was located within the kinase domainⅢ,and several of which were evidently associated with the diversity in SFW response,indicating the critical role of kinase domainⅢin expression of disease resistance.These findings provide valuable information for further functional analysis of SFW resistance genes and marker-assisted resistance breeding in sesame. 展开更多
关键词 Breeding for resistance Genetic analysis Molecular analysis Tandem kinase domain
下载PDF
Insulin resistance as the molecular link between diabetes and Alzheimer's disease 被引量:1
6
作者 Mona Mohamed Ibrahim Abdalla 《World Journal of Diabetes》 SCIE 2024年第7期1430-1447,共18页
Diabetes mellitus(DM)and Alzheimer's disease(AD)are two major health concerns that have seen a rising prevalence worldwide.Recent studies have indicated a possible link between DM and an increased risk of developi... Diabetes mellitus(DM)and Alzheimer's disease(AD)are two major health concerns that have seen a rising prevalence worldwide.Recent studies have indicated a possible link between DM and an increased risk of developing AD.Insulin,while primarily known for its role in regulating blood sugar,also plays a vital role in protecting brain functions.Insulin resistance(IR),especially prevalent in type 2 diabetes,is believed to play a significant role in AD's development.When insulin signalling becomes dysfunctional,it can negatively affect various brain functions,making individuals more susceptible to AD's defining features,such as the buildup of beta-amyloid plaques and tau protein tangles.Emerging research suggests that addressing insulin-related issues might help reduce or even reverse the brain changes linked to AD.This review aims to explore the relationship between DM and AD,with a focus on the role of IR.It also explores the molecular mechanisms by which IR might lead to brain changes and assesses current treatments that target IR.Understanding IR's role in the connection between DM and AD offers new possibilities for treatments and highlights the importance of continued research in this interdisciplinary field. 展开更多
关键词 Alzheimer's disease Insulin resistance OBESITY DEMENTIA DIABETES Metabolic syndrome
下载PDF
Greatly enhanced corrosion/wear resistances of epoxy coating for Mg alloy through a synergistic effect between functionalized graphene and insulated blocking layer 被引量:1
7
作者 Z.Y.Xue X.J.Li +3 位作者 J.H.Chu M.M.Li D.N.Zou L.B.Tong 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2024年第1期332-344,共13页
The poor corrosion and wear resistances of Mg alloys seriously limit their potential applications in various industries.The conventional epoxy coating easily forms many intrinsic defects during the solidification proc... The poor corrosion and wear resistances of Mg alloys seriously limit their potential applications in various industries.The conventional epoxy coating easily forms many intrinsic defects during the solidification process,which cannot provide sufficient protection.In the current study,we design a double-layer epoxy composite coating on Mg alloy with enhanced anti-corrosion/wear properties,via the spin-assisted assembly technique.The outer layer is functionalized graphene(FG)in waterborne epoxy resin(WEP)and the inner layer is Ce-based conversion(Ce)film.The FG sheets can be homogeneously dispersed within the epoxy matrix to fill the intrinsic defects and improve the barrier capability.The Ce film connects the outer layer with the substrate,showing the transition effect.The corrosion rate of Ce/WEP/FG composite coating is 2131 times lower than that of bare Mg alloy,and the wear rate is decreased by~90%.The improved corrosion resistance is attributed to the labyrinth effect(hindering the penetration of corrosive medium)and the obstruction of galvanic coupling behavior.The synergistic effect derived from the FG sheet and blocking layer exhibits great potential in realizing the improvement of multi-functional integration,which will open up a new avenue for the development of novel composite protection coatings of Mg alloys. 展开更多
关键词 Mg alloy Functionalized graphene Epoxy coating Corrosion/wear resistance Blocking layer
下载PDF
Novel insights into D-Pinitol based therapies:a link between tau hyperphosphorylation and insulin resistance 被引量:3
8
作者 Dina Medina-Vera Antonio Jesús López-Gambero +4 位作者 Juan Antonio Navarro Carlos Sanjuan Elena Baixeras Juan Decara Fernando Rodríguez de Fonseca 《Neural Regeneration Research》 SCIE CAS CSCD 2024年第2期289-295,共7页
Alzheimer’s disease is a neurodegenerative disorder characterized by the amyloid accumulation in the brains of patients with Alzheimer’s disease.The pathogenesis of Alzheimer’s disease is mainly mediated by the pho... Alzheimer’s disease is a neurodegenerative disorder characterized by the amyloid accumulation in the brains of patients with Alzheimer’s disease.The pathogenesis of Alzheimer’s disease is mainly mediated by the phosphorylation and aggregation of tau protein.Among the multiple causes of tau hyperphosphorylation,brain insulin resistance has generated much attention,and inositols as insulin sensitizers,are currently considered candidates for drug development.The present narrative review revises the interactions between these three elements:Alzheimer’s disease-tau-inositols,which can eventually identify targets for new disease modifiers capable of bringing hope to the millions of people affected by this devastating disease. 展开更多
关键词 Alzheimer’s disease cyclin-dependent kinase 5 diabetes D-PINITOL inositols insulin resistance KINASES PHOSPHORYLATION PI3K/Akt tau
下载PDF
Upregulated lncRNA PRNT promotes progression and oxaliplatin resistance of colorectal cancer cells by regulating HIPK2 transcription 被引量:2
9
作者 Sai-Nan Li Shan Yang +5 位作者 Hao-Qi Wang Tian-Li Hui Meng Cheng Xi Zhang Bao-Kun Li Gui-Ying Wang 《World Journal of Gastrointestinal Oncology》 SCIE 2024年第4期1564-1577,共14页
BACKGROUND Colorectal cancer(CRC)is the third most common cancer and a significant cause of cancer-related mortality globally.Resistance to chemotherapy,especially during CRC treatment,leads to reduced effectiveness o... BACKGROUND Colorectal cancer(CRC)is the third most common cancer and a significant cause of cancer-related mortality globally.Resistance to chemotherapy,especially during CRC treatment,leads to reduced effectiveness of drugs and poor patient outcomes.Long noncoding RNAs(lncRNAs)have been implicated in various pathophysiological processes of tumor cells,including chemotherapy resistance,yet the roles of many lncRNAs in CRC remain unclear.AIM To identify and analyze the lncRNAs involved in oxaliplatin resistance in CRC and to understand the underlying molecular mechanisms influencing this resistance.METHODS Gene Expression Omnibus datasets GSE42387 and GSE30011 were reanalyzed to identify lncRNAs and mRNAs associated with oxaliplatin resistance.Various bioinformatics tools were employed to elucidate molecular mechanisms.The expression levels of lncRNAs and mRNAs were assessed via quantitative reverse transcription-polymerase chain reaction.Functional assays,including MTT,wound healing,and Transwell,were conducted to investigate the functional implications of lncRNA alterations.Interactions between lncRNAs and trans-cription factors were examined using RIP and luciferase reporter assays,while Western blotting was used to confirm downstream pathways.Additionally,a xenograft mouse model was utilized to study the in vivo effects of lncRNAs on chemotherapy resistance.RESULTS LncRNA prion protein testis specific(PRNT)was found to be upregulated in oxaliplatin-resistant CRC cell lines and negatively correlated with homeodomain interacting protein kinase 2(HIPK2)expression.PRNT was demonstrated to sponge transcription factor zinc finger protein 184(ZNF184),which in turn could regulate HIPK2 expression.Altered expression of PRNT influenced CRC cell sensitivity to oxaliplatin,with overexpression leading to decreased sensitivity and decreased expression reducing resistance.Both RIP and luciferase reporter assays indicated that ZNF184 and HIPK2 are targets of PRNT.The PRNT/ZNF184/HIPK2 axis was implicated in promoting CRC progression and oxaliplatin resistance both in vitro and in vivo.CONCLUSION The study concludes that PRNT is upregulated in oxaliplatin-resistant CRC cells and modulates the expression of HIPK2 by sponging ZNF184.This regulatory mechanism enhances CRC progression and resistance to oxaliplatin,positioning PRNT as a promising therapeutic target for CRC patients undergoing oxaliplatin-based chemotherapy. 展开更多
关键词 Colorectal cancer Oxaliplatin resistance Prion protein testis specific Zinc finger protein 184 Homeodomain interacting protein kinase 2
下载PDF
Role of targeting ferroptosis as a component of combination therapy in combating drug resistance in colorectal cancer 被引量:1
10
作者 Xiao-Ting Xie Qiang-Hu Pang Lian-Xiang Luo 《World Journal of Clinical Oncology》 2024年第3期375-377,共3页
Colorectal cancer(CRC)is a form of cancer that is often resistant to chemotherapy,targeted therapy,radiotherapy,and immunotherapy due to its genomic instability and inflammatory tumor microenvironment.Ferroptosis,a ty... Colorectal cancer(CRC)is a form of cancer that is often resistant to chemotherapy,targeted therapy,radiotherapy,and immunotherapy due to its genomic instability and inflammatory tumor microenvironment.Ferroptosis,a type of non-apoptotic cell death,is characterized by the accumulation of iron and the oxidation of lipids.Studies have revealed that the levels of reactive oxygen species and glutathione in CRC cells are significantly lower than those in healthy colon cells.Erastin has emerged as a promising candidate for CRC treatment by diminishing stemness and chemoresistance.Moreover,the gut,responsible for regulating iron absorption and release,could influence CRC susceptibility through iron metabolism modulation.Investigation into ferroptosis offers new insights into CRC pathogenesis and clinical management,potentially revolutionizing treatment approaches for therapy-resistant cancers. 展开更多
关键词 Colorectal cancer Ferroptosis IMMUNOTHERAPY Drug resistance CHEMOTHERAPY Nanodrug delivery systems
下载PDF
Dissemination of Resistance Integrons and Genes Coding for Blse and Cabapenemases in the Urban Drainage Network in Cote d’Ivoire
11
作者 Coulibaly Kalpy Julien Diaby Aboubakar Sidik +8 位作者 Vakou N’dri Sabine M’bengue Gbonon Valérie Carole Claon Jean Stephane Yao Kouamé Eric Gnali Gbohounou Fabrice Yéo Yéfougnini Bagré Issa Djaman Allico Joseph Dosso Mireille 《Advances in Microbiology》 CAS 2024年第5期268-286,共19页
Antibiotic resistance has become a major threat to human health worldwide. Environment, particularly the water environment, has long been overlooked as a player in the antibiotic resistance cycle, although its role re... Antibiotic resistance has become a major threat to human health worldwide. Environment, particularly the water environment, has long been overlooked as a player in the antibiotic resistance cycle, although its role remains unclear. These can provide an ideal setting for the acquisition and dissemination of antibiotic resistance, as they are frequently affected by anthropogenic activities. The objective of this study was to establish a diffusion map of resistance integrons used as genetic markers of resistance associated with antibiotic resistance conferring genes (ARGs). Total DNA extracts from non-cultivable bacterial communities were used for the analyses. These communities were obtained from wastewater samples from 14 sites upstream and downstream of drainage channels or effluents in the cities of Abidjan, Bouaké, and Yamoussoukro. The results obtained correspond to the number of positives among the treated samples (n = 39). Among the genetic markers of dissemination, class 1 integrons were the most evident in 94.8% of samples in Abidjan (93.3%), Bouaké (100%) and Yamoussoukro (91.6%). Class 2 integrons and class 3 integrons were found respectively in 41% and 51% of all samples. Genes coding for β-lactamases and blaTEM was identified in almost all samples at a rate of 97.4%. A co-presence of the three genes blaTEM, blaSHV and blaCTX-M is also remarkable in the sites of the city of Yamoussoukro. Among the genes coding for carbapenemases, only blaKPC 17.94%, blaNDM 30.76% and blaOXA48 38.46% were detected in the samples. 展开更多
关键词 Antibiotic resistance WASTEWATER resistance Integrons (RIs) resistance Genes
下载PDF
Natural Products and Antiviral Resistance
12
作者 Erute Magdalene Adongbede Janak Raj Khatiwada +1 位作者 Rishipal Rastrapal Bansode Leonard Lamont Williams 《Advances in Microbiology》 CAS 2024年第7期366-388,共23页
Viral diseases are minacious with the potential for causing pandemics and treatment is complicated because of their inherent ability to mutate and become resistant to drugs. Antiviral drug resistance is a persistent p... Viral diseases are minacious with the potential for causing pandemics and treatment is complicated because of their inherent ability to mutate and become resistant to drugs. Antiviral drug resistance is a persistent problem that needs continuous attention by scientists, medical professionals, and government agencies. To solve the problem, an in-depth understanding of the intricate interplay between causes of antiviral drug resistance and potential new drugs specifically natural products is imperative in the interest and safety of public health. This review delves into natural product as reservoir for antiviral agents with the peculiar potentials for addressing the complexities associated with multi-drug resistant and emerging viral strains. An evaluation of the mechanisms underlying antiviral drug activity, antiviral drug resistance is addressed, with emphasis on production of broad-spectrum antiviral agents from natural sources. There is a need for continued natural product-based research, identification of new species and novel compounds. 展开更多
关键词 Drug resistance resistance Mechanisms PHYTOCHEMICALS Broad-Spectrum Drugs Antiviral Agents
下载PDF
Nature’s Pharmacy under Siege: Investigating Antibiotic Resistance Pattern in Endophytic Bacteria of Medicinal Plants
13
作者 Bonoshree Sarkar Afroza Sultana +5 位作者 Nabila Nawar Binti Farhana Tasnim Chowdhury Sadia Afrin Mohammad Fahim Taibur Rahman Atiqur Rahman 《Advances in Microbiology》 CAS 2024年第4期183-208,共26页
Antibiotic resistance poses a significant global health threat, necessitating a thorough understanding of its prevalence in various ecological contexts. Medicinal plants, renowned for their therapeutic properties, hos... Antibiotic resistance poses a significant global health threat, necessitating a thorough understanding of its prevalence in various ecological contexts. Medicinal plants, renowned for their therapeutic properties, host endophytic bacteria that produce bioactive compounds. Understanding antibiotic resistance dynamics in these bacteria is vital for human health and antibiotic efficacy preservation. In this study, we investigated antibiotic resistance profiles in endophytic bacteria from five medicinal plants: Thankuni, Neem, Aparajita, Joba, and Snake plant. We isolated and characterized 113 endophytic bacteria, with varying resistance patterns observed against multiple antibiotics. Notably, 53 strains were multidrug-resistant (MDR), with 14 exhibiting extensive drug resistance (XDR). Thankuni-associated bacteria displayed 44% MDR and 11% XDR, while Neem-associated bacteria showed higher resistance (60% MDR, 13% XDR). Aparajita-associated bacteria had lower resistance (22% MDR, 6% XDR), whereas Joba-associated bacteria exhibited substantial resistance (54% MDR, 14% XDR). Snake plant-associated bacteria showed 7% MDR and 4% XDR. Genus-specific distribution revealed Bacillus (47%), Staphylococcus (21%), and Klebsiella (11%) as major contributors to MDR. Our findings highlight diverse drug resistance patterns among plant-associated bacteria and underscore the complexity of antibiotic resistance dynamics in diverse plant environments. Identification of XDR strains emphasizes the severity of the antibiotic resistance problem, warranting further investigation into contributing factors. 展开更多
关键词 Antibiotic resistance Endophytic Bacteria Medicinal Plants Drug resistance
下载PDF
Five-year analysis of isolated pathogens and antibiotic resistance of ocular infections from two large tertiary comprehensive hospitals in east China
14
作者 Pan-Pan Li Li Li +4 位作者 Jun-Fang Zhang Bai Qin Li-Hua Kang Min Ji Huai-Jin Guan 《International Journal of Ophthalmology(English edition)》 SCIE CAS 2024年第9期1707-1716,共10页
AIM:To analyze the spectrum of isolated pathogens and antibiotic resistance for ocular infections within 5y at two tertiary hospitals in east China.METHODS:Ocular specimen data were collected from January 2019 to Octo... AIM:To analyze the spectrum of isolated pathogens and antibiotic resistance for ocular infections within 5y at two tertiary hospitals in east China.METHODS:Ocular specimen data were collected from January 2019 to October 2023.The pathogen spectrum and positive culture rate for different infection location,such as keratitis,endophthalmitis,and periocular infections,along with antibiotic resistance were analyzed.RESULTS:We included 2727 specimens,including 827(30.33%)positive cultures.A total of 871 strains were isolated,530(60.85%)bacterial and 341(39.15%)fungal strains were isolated.Gram-positive cocci(GPC)were the most common ocular pathogens.The most common bacterial isolates were Staphylococcus epidermidis(25.03%),Staphylococcus aureus(7.46%),Streptococcus pneumoniae(4.59%),Corynebacterium macginleyi(3.44%),and Pseudomonas aeruginosa(3.33%).The most common fungal genera were Fusarium spp.(12.74%),Aspergillus spp.(6.54%),and Scedosporium spp.(5.74%).Staphylococcus epidermidis strains showed more than 50%resistance to fluoroquinolones.Streptococcus pneumoniae and Corynebacterium macginleyi showed more than 90%resistance to erythromycin.The percentage of bacteria showing multidrug resistance(MDR)significantly decreased(χ^(2)=17.44,P=0.002).CONCLUSION:GPC are the most common ocular pathogens.Corynebacterium macginleyi,as the fourth common bacterium,may currently be the local microbiological feature of east China.Fusarium spp.is the most common fungus.More than 50%of the GPC are resistant to fluoroquinolones,penicillins,and macrolides.However,the proportion of MDR strains has been reduced over time. 展开更多
关键词 ocular infections BACTERIA FUNGUS antibiotic resistance multidrug resistance
下载PDF
Enhanced wear resistance,antibacterial performance,and biocompatibility using nanotubes containing nano-Ag and bioceramics in vitro
15
作者 Qingge Wang Jia Liu +9 位作者 Hong Wu Jingbo Liu Yaojia Ren Luxin Liang Xinxin Yan Ian Baker Shifeng Liu V.V.Uglov Chengliang Yang Liqiang Wang 《Bio-Design and Manufacturing》 SCIE EI CAS CSCD 2024年第5期670-686,共17页
A good Ti-based joint implant should prevent stress shielding and achieve good bioactivity and anti-infection performance.To meet these requirements,the low-elastic-modulus alloy—Ti–35Nb–2Ta–3Zr—was used as the s... A good Ti-based joint implant should prevent stress shielding and achieve good bioactivity and anti-infection performance.To meet these requirements,the low-elastic-modulus alloy—Ti–35Nb–2Ta–3Zr—was used as the substrate,and functional coatings that contained bioceramics and Ag ions were prepared for coating on TiO_(2)nanotubes(diameter:(80±20)nm and(150±40)nm)using anodization,deposition,and spin-coating methods.The effects of the bioceramics(nano-β-tricalcium phosphate,microhydroxyapatite(micro-HA),and meso-CaSiO_(3))and Ag nanoparticles(size:(50±20)nm)on the antibacterial activity and the tribocorrosion,corrosion,and early in vitro osteogenic behaviors of the nanotubes were investigated.The tribocorrosion and corrosion results showed that the wear rate and corrosive rate were highly dependent on the features of the nanotube surface.Micro-HA showed great wear resistance with a wear rate of(1.26±0.06)×10^(−3)mm^(3)/(N·m)due to adhesive and abrasivewear.Meso-CaSiO_(3)showed enhanced cell adhesion,proliferation,and alkaline phosphatase activity.The coatings that contained nano-Ag exhibited good antibacterial activity with an antibacterial rate of≥89.5%against Escherichia coli.These findings indicate that hybrid coatings may have the potential to accelerate osteogenesis. 展开更多
关键词 βTi alloy Surface modification Wear resistance Corrosion resistance Osteogenic behavior Antibacterial activity
下载PDF
Multi Location Field Evaluation of BC1F2 Sorghum Populations for Striga Resistance in Niger
16
作者 Ousseini Ardaly Abdou Aissata Mamadou Ibrahim +2 位作者 Yaw Eleblu John Saviour Ofori Kwadwo Ousmane Zakari Moussa 《American Journal of Plant Sciences》 CAS 2024年第10期1010-1021,共12页
In Niger, a landlocked country, sorghum is the second staple food cultivated over the country by smallholder farmer. The crop is important for human and animal consumption. Despite its importance, the crop is affected... In Niger, a landlocked country, sorghum is the second staple food cultivated over the country by smallholder farmer. The crop is important for human and animal consumption. Despite its importance, the crop is affected by biotic and abiotic constraints. Among those constraints, striga has a high impact on yield. In fact, to survive, farmers are growing their local preferred sorghum varieties wish is highly sensible to the weed. Striga management is a challenge that requires a permanent solution. In addition, the development of high-yielding Striga resistant genotypes will be appreciated by farmers. The development of striga resistance will be based on the breeding population performances under farmer’s diverse environmental conditions adaptation. The main objective of this study is to evaluate two breeding populations for striga resistance in two different environments at Boulke and Dibissou in Tahoua region, to identify the early and high-yielding striga tolerant genotypes under natural infestation. 展开更多
关键词 Striga resistance SORGHUM Breeding Population Multi Environment
下载PDF
Unraveling the complex landscape of endocrine resistance in breast cancer:Emerging role of long noncoding RNA AGPG and beyond
17
作者 Muhammad Babar Khawar Shiyi Yu +1 位作者 Ali Afzal Haibo Sun 《Chinese Medical Journal》 SCIE CAS CSCD 2024年第16期1985-1987,共3页
To the Editor:Breast cancer(BC)is the most common cancer in women,which affects 2.26 million people annually,with 680,000 fatalities.Around 70%of cases involve estrogen-activated estrogen receptors(ER),which promote t... To the Editor:Breast cancer(BC)is the most common cancer in women,which affects 2.26 million people annually,with 680,000 fatalities.Around 70%of cases involve estrogen-activated estrogen receptors(ER),which promote tumor growth through gene regulation and cellular signaling.ER reactivation without ligands contributes to therapy resistance.Endocrine resistance in estrogen receptor-positive(ER+)breast tumors can result from mutations in ER,altered interactions with coactivators/corepressors,or crosstalk with growth factor receptors and oncogenic pathways.[1]Additionally,long non-coding RNAs(lncRNAs)are diverse molecules with distinct expression patterns in different cancer types,playing critical roles in tumorigenesis.[2]Notably,actin gamma 1 pseudogene(AGPG)is emerging as a noteworthy lncRNA that holds promise as a new therapeutic target intended for the effective management of endocrine-resistant BC. 展开更多
关键词 BREAST resistance LANDSCAPE
原文传递
Gingipain from Porphyromonas gingivalis causes insulin resistance by degrading insulin receptors through direct proteolytic effects
18
作者 Fen Liu Bofeng Zhu +7 位作者 Ying An Zhifei Zhou Peiying Xiong Xuan Li Yang Mi Tongqiang He Faming Chen Buling Wu 《International Journal of Oral Science》 SCIE CAS CSCD 2024年第3期539-552,共14页
Periodontitis is a critical risk factor for the occurrence and development of diabetes.Porphyromonas gingivalis may participate in insulin resistance(IR)caused by periodontal inflammation,but the functional role and s... Periodontitis is a critical risk factor for the occurrence and development of diabetes.Porphyromonas gingivalis may participate in insulin resistance(IR)caused by periodontal inflammation,but the functional role and specific mechanisms of P.gingivalis in IR remain unclear.In the present study,clinical samples were analysed to determine the statistical correlation between P.gingivalis and IR occurrence.Through culturing of hepatocytes,myocytes,and adipocytes,and feeding mice P.gingivalis orally,the functional correlation between P.gingivalis and IR occurrence was further studied both in vitro and in vivo.Clinical data suggested that the amount of P.gingivalis isolated was correlated with the Homeostatic Model Assessment for IR score.In vitro studies suggested that coculture with P.gingivalis decreased glucose uptake and insulin receptor(INSR)protein expression in hepatocytes,myocytes,and adipocytes.Mice fed P.gingivalis tended to undergo IR.P.gingivalis was detectable in the liver,skeletal muscle,and adipose tissue of experimental mice.The distribution sites of gingipain coincided with the downregulation of INSR.Gingipain proteolysed the functional insulin-binding region of INSR.Coculture with P.gingivalis significantly decreased the INSR–insulin binding ability.Knocking out gingipain from P.gingivalis alleviated the negative effects of P.gingivalis on IR in vivo.Taken together,these findings indicate that distantly migrated P.gingivalis may directly proteolytically degrade INSR through gingipain,thereby leading to IR.The results provide a new strategy for preventing diabetes by targeting periodontal pathogens and provide new ideas for exploring novel mechanisms by which periodontal inflammation affects the systemic metabolic state. 展开更多
关键词 gingivalis INFLAMMATION resistance
下载PDF
Cellular models of stress resistance may pave ways to fight neurodegenerative diseases
19
作者 Thu Nguyen Minh Pham Christian Behl 《Neural Regeneration Research》 SCIE CAS 2025年第9期2579-2580,共2页
Alzheimer's disease(AD),the most common form of neurodegeneration,is characterized by selective neuronal vulnerability and brain regionselective neuron demise.The entorhinal cortex and hippoc,ampal CA1 projection ... Alzheimer's disease(AD),the most common form of neurodegeneration,is characterized by selective neuronal vulnerability and brain regionselective neuron demise.The entorhinal cortex and hippoc,ampal CA1 projection neurons are at greater risk in AD whereas other regions display resistance to neurodegeneration.Interestingly,the cerebellum,a phylogenetically very old region,is affected only very late in the disease progression. 展开更多
关键词 CORTEX resistance ALZHEIMER
下载PDF
Large Tunneling Magnetoresistance and Perfect Spin Filtering Effect in van der Waals Cu/FeX_(2)/h-BN/FeX_(2)/Cu(X=Cl,Br,I)Magnetic Tunnel Junctions
20
作者 Xinlong Dong Xiaowen Shi +4 位作者 Dan Qiao Zeyu Li Yuhao Bai Zhenhua Qiao Xiaohong Xu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2024年第10期112-118,共7页
The two-dimensional magnetic van der Waals heterojunctions have opened unprecedented opportunities to explore new physics due to their potential for spintronic applications.Here,combing density functional theory with ... The two-dimensional magnetic van der Waals heterojunctions have opened unprecedented opportunities to explore new physics due to their potential for spintronic applications.Here,combing density functional theory with non-equilibrium Green’s function technique. 展开更多
关键词 technique. resistance PERFECT
下载PDF
上一页 1 2 250 下一页 到第
使用帮助 返回顶部