检索结果-南通市图书馆

Rhombencephalitis caused by listeria monocytogenes with hydrocephalus and intracranial hemorrhage:A case report and review of the literature

引用

World Journal of Clinical Cases 2019年第4期7卷 538-547页

作者： Jing-Jing Liang Xiao-Yan He Hong Ye Department of Neurology Wuhan University Renmin Hospital Department of Neurology Shijiazhuang Second Hospital Department of Neurology Xuanwu Hospital Capital Medical University

BACKGROUND listeria monocytogenes(L. monocytogenes), a Gram-positive facultatively intracellular bacterium, is the causative agent of human listeriosis. listeria infection is usually found in immunocompromised patients, including elderly people, pregnant women, and newborns, whereas it is rare in healthy people. L.monocytogenes may cause meningitis, meningoencephalitis, and some very rare and severe complications, such as hydrocephalus and intracranial hemorrhage,which cause high mortality and morbidity worldwide. Up to now, reports on hydrocephalus and intracranial hemorrhage due to L. monocytogenes are few.CASE SUMMARY We herein report a case of rhombencephalitis caused by L. monocytogenes in a 29-year-old man. He was admitted to the hospital with a 2-d history of headache and fever. He consumed unpasteurized cooked beef two days before appearance.His medical history included type 2 diabetes mellitus, and contaminated beef intake 2 d before onset. Cerebrospinal fluid analysis revealed Gram-positive rod infection, and blood culture was positive for L. monocytogenes. Magnetic resonance imaging findings suggested rhombencephalitis and hydrocephalus.Treatment was started empirically and then modified according to the blood culture results. Repeated CT images were suggestive of intracranial hemorrhage.Although the patient underwent aggressive external ventricular drainage, he died of a continuing deterioration of intracranial conditions.CONCLUSION Hydrocephalus, intracranial hemorrhage, and inappropriate antimicrobial treatment are the determinations of unfavorable outcomes.

关键词： Rhombencephalitis listeria monocytogenes Central nervous system infections Hydrocephalus Intracranial hemorrhage Case report

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Severe Sepsis Caused by listeria monocytogenes in A Patient Given Monoclonal Antibodies Against CD38 and Proteosome Inhibitor

引用

Infectious Microbes & Diseases 2019年第1期1卷 30-31页

作者： Derek L.L.Hung Susanna K.P.Lau Patrick C.Y.Woo Department of Microbiology The University of Hong KongHong KongChina State Key Laboratory of Emerging Infectious Diseases The University of Hong KongHong KongChina Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases The University of Hong KongHong KongChina

Introduction Target therapies are widely used for treatment of various kinds of hematological malignancies.Since the cancer cells that are targeted,share the same markers with the non-cancerous cells of the immunological system,these therapies are often associated with infectious diseases that require the particular type of immune response for control.In this article,we report a case of listeria monocytogenes bacteraemia complicating carfilzomib and daratumumab treatment for multiple myeloma.To the best of our knowledge,this is the first case report of listeriosis as a complication of monoclonal antibodies against CD38 and/or proteosome inhibitor therapy.

关键词： listeria multiple myeloma daratumumab carfilzomib

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Over-Production of P60 Family Proteins, Glycolytic and Stress Response Proteins Characterizes the Autolytic Profile of listeria monocytogenes

引用

Advances in Microbiology 2012年第2期2卷 181-200页

作者： Elsa Pinto Natália Marques Peter W. Andrew M. Leonor Faleiro BioFig Universidade do Algarve Faculdade de Ciências e Tecnologia Faro Portugal Centro de Biomedicina Molecular e Estrutural (IBB) Faculdade de Ciências e Tecnologia Universidade do Algarve Faro Portugal Department of Infection Immunity and Inflammation University of Leicester Leicester UK

listeria monocytogenes is a foodborne pathogen capable of surviving under challenging conditions both outside and inside the host. During the transition from exponential to stationary phase it experiences a series of environmental changes that require an appropriate response to maintain cell viability. In this study the autolytic behaviour of a L. monocytogenes strain was investigated by two-dimensional electrophoresis. The study was done at the permissive autolysis temperature, 30℃ and at 20℃, an autolysis non-permissive temperature. An autolytic strain proteome was also compared to a non-autolytic strain at the permissive autolysis temperature. The autolytic strain proteome at 30℃ in comparison to 20℃ evidenced increased synthesis of the P60 autolysin, glycolytic enzymes and proteins related with environmental stress responses. The over-production of P45 autolysin, was observed when the autolytic strain proteome was compared with the non-autolytic strain. The proteomes at the non-permissive temperature and the proteome of the non-autolytic strain were characterized by a diminished synthesis of several stress related proteins. The lack of autolysis seems to be associated to the over-production of proteins linked to fatty acid and amino acid synthesis, transcription regulation and cell morphogenesis as evidenced by the proteome at the non-permissive temperature and the non-autolytic strain. Autolysis proteome evidenced the over-production of P60 autolysins, glycolysis and stress proteins whereas the proteome obtained in conditions of absence of autolysis reveal a completely different group of proteins. Possible targets to activate listerial autolysis were identified.

关键词： listeria monocytogenes Autolysis Proteome Stress Proteins

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Evaluation of Potential for Translocation of listeria monocytogenesfrom Floor Drains to Food Contact Surfaces in the Surrounding Environment Using listeria innocuaas a Surrogate

引用

Advances in Microbiology 2012年第4期2卷 565-570页

作者： Jasdeep K. Saini James L. Marsden Daniel Y. C. Fung Beth Ann Crozier-Dodson Food Science Institute Department of Animal Sciences and Industry Kansas State University Manhattan US Food Science Institute Department of Animal Sciences and Industry Kansas State University Manhattan US.

Floor drains in processing environments harbor listeria spp. due to continuous presence of humidity and organic substrates. Cleaning and washing activities in food-processing facilities can translocate the bacterial cells from the drain to the surrounding environment, thus contaminating food products still in production. This study evaluated the potential for translocation of listeria monocytogenes from drains to food contact surfaces in the surrounding environment using listeria innocua as a surrogate. A 7 × 7 × 8-foot polycarbonate flexi-glass chamber with a 10-inch-diameter drain mounted on an aluminum cabinet was used. Stainless steel coupons (6.4 × 1.9 × 0.1 cm, 12 per height) were hung at 1, 3, and 5 feet inside the chamber. Four treatment sets;non-inoculated, non-treated;non-inoculated, treated;inoculated, treated;inoculated non-treated;and two subtreatments of 8 h and 48 h were performed. For the inoculated sets, meat slurry (10 gof ground beef in 900 mL water) and a four-strain cocktail of listeria innocua at 7 - 8 log CFU/mL were used. For the treated sets, in addition, a commercial cleaner and sanitizer was applied. The drain was cleaned using a pressure hose (40 - 50 psi) after 8 h and 48 h. Coupons were then removed and enriched in listeria enrichment broth to establish if any cell translocated from the drain onto the stainless steel coupons via aerosols generated during washing. Confirmation was done using VIP listeria rapid test kits. Results indicated translocation at all three heights ranging from 2% - 25%. Significantly higher translocation (p listeria spp. from drains to food contact surfaces does occur and increases with increased proximity to the drain.

关键词： listeria Monocytogenes listeria Innocua Drain Translocation Stainless Steel Coupons

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Comparative Analysis of Pathogenicity Assays and PCR for listeria monocytogenesIsolated from Animal, Raw Food and Environmental Sources in Korea

引用

Advances in Microbiology 2013年第2期3卷 191-199页

作者： Sanghun Park Jihun Jung Younghee Oh Jibho Lee Seunghee Ryu Hyowon Jung Sunhee Park Miok Song Gunyong Park Sungmin Choi Sangmi Lee Junghun Kim YoungZoo Chae Byungyeol Jung Myunghun Lee Hyunsoo Kim Seoul Metropolitan Government Research Institute of Public Health and Environment Yangjae-Dong Seocho-Gu Seoul Korea

Results of PCR with oligonucleotide primers were designed from the assembled panel of four potential virulence genes (two of internalin gene and two of transcriptional regulator gene). Most of the isolates including reference strains were reactive by PCR, whereas the other strains (No.80, 81, and 83) isolated from pork, were non-reactive by PCR. In particular, all pork isolates were PCR-negative for two primers (lmo2672 and 2821) sets tested. However, No.82 was positive for lmo1134 primer, and No.84 was positive for lmo2470 of pork isolates. It was observed that all listeria monocytogenes (L. monocytogenes) penetrate Vero cells, although the invasion efficiency of each strain varied (between 0.5 and 18.9%). When compared in cell assay with PFGE, the results were shown that the mean invasion efficiency for lineage II isolate (2.6%) was significantly lower (ANOVA-test,

关键词： PFGE Vero Cell listeria monocytogenes in Vitro Assay

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Use of Bacteriocin Producing Lactococcus lactissubsp. lactisLABW4 to Prevent listeria monocytogenesInduced Spoilage of Meat

引用

Food and Nutrition Sciences 2014年第22期5卷 2115-2123页

作者： Soma Barman Ranjan Ghosh Narayan C. Mandal Mycology and Plant Pathology Laboratory Department of Botany Visva-Bharati Santiniketan India

A bacteriocin producing strain of Lactococcus lactis subsp. lactis LABW4 was isolated from naturally fermented milk product which exhibited strong antibacterial activity against listeria monocytogenes MTCC657, a food spoilage psychrophilic organism. Both cell free and heat killed supernatants of LABW4 were effective to produce zones of inhibition against L. monocytogenes in vitro. The antibacterial metabolite(s) of LABW4 showed strong cidal effect on the growth of L. monocytogenes. Meat samples, mixed with heat killed supernatant of LABW4 when inoculated with listeria, remain fresh up to 25 days in refrigerated condition whereas spoilage started immediately after 24 hours of inoculation for control sets. Enhancement of Lactate dehydrogenase of L. monocytogenes upon treatment with LABW4 cell free supernatant suggested its lytic mode of action. Cell lysis or degradations were also supported by scanning electron micrograph of treated cells.

关键词： Lactic Acid Bacteria Bacteriocin Spoilage of Meat listeria monocytogenes Lactate dehydrogenase

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Effects of Sodium Lactate on the Survival of listeria Monocytogenes, Escherichia coliO157:H7, and Salmonellaspp. in Cooked Ham at Refrigerated and Abuse Temperatures

引用

Food and Nutrition Sciences 2011年第5期2卷 464-470页

作者： Cheng-An Hwang Shiowshuh Sheen Vijay Juneja Residue Chemistry and Predictive Microbiology Research Unit Eastern Regional Research Center Agricultural Research Service United States Department of Agriculture Wyndmoor USA

The objective of this study was to determine the effect of sodium lactate on the survival of listeria monocytogenes, Escherichia coli O157: H7, and Salmonella spp. in cooked ham during storage at refrigerated and abuse temperatures. Cooked ham was added with 0% - 3% lactate, inoculated with a multiple-strain mixture of L. monocytogenes, E. coli O157: H7, or Salmonella spp. and stored at 4oC - 15oC for up to 35 day. The growth of the three pathogens was inhibited in ham containing 3% lactate, and no growth of E. coli O157: H7 and Salmonella spp. occurred at the lowest storage tem- peratures of 6 and 8oC, respectively. In ham containing no lactate, the average growth rates were 0.256 - 0.380 log CFU/day for L. monocytogenes at 4oC - 8oC, 0.242 - 0.315 log CFU/day for E. coli O157: H7 at 8oC - 15oC, and 0.249 - 0.328 log CFU/day for Salmonella spp. at 10oC - 15oC. The addition of 1% or 2% lactate significantly (P < 0.05) reduced the growth rates of the three pathogens, and the effect was more profound at lower temperatures. Salmonella spp. were more sensitive to the effect of lactate than L. monocytogenes and E. coli O157: H7. Polynomial models were developed to describe the growth rates of the three pathogens as affected by the lactate concentration and storage tem- perature. Results from this study demonstrate the effect of lactate on the growth of L. monocytogenes, E. coli O157: H7, and Salmonella spp. in cooked ham and indicate the effective lactate concentrations and storage temperatures that can be used to enhance the microbiological safety of ready-to-eat ham products.

关键词： Ham Lactate listeria Monocytogenes Escherichia Coli O157: H7 Salmonella spp.

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Loop-Mediated Isothermal Amplification (LAMP) for the Detection of listeria monocytogenesand Major Pathogenic Serotypes

引用

American Journal of Analytical Chemistry 2014年第16期5卷 1057-1064页

作者： Ana Paula Rocha da Costa Mariana de Lira Nunes Carina Lucena Mendes-Marques Alzira Maria Paiva de Almeida Nilma Cintra Leal Departamento de Microbiologia Centro de Pesquisas Aggeu Magalh&atilde es FIOCRUZ-PE Recife Brazil

Rapid identification and characterization of listeria monocytogenes are required for the food industry, epidemiological studies, and disease prevention and control. However, typing procedures are labor-intensive and time-consuming, and they require technical expertise, a panel of sera and reference culture strains or sophisticated and expensive equipment. To improve upon traditional diagnostic methods for L. monocytogenes we developed and evaluated an efficient procedure for the specific identification of L. monocytogenes and the major pathogenic serotypes of the species based on loop-mediated isothermal amplification (LAMP). Four individual reactions were designed using primers targeting any L. monocytogenes serotypes (LAMP-AS) and the 1/2a (LAMP-1/2a), 1/2b (LAMP-1/2b), and 4b (LAMP-4b) serotypes. The procedure distinguished L. monocytogenes from closely genetically related species and the targeted serotypes. Cross-reactivity with a few rare serotypes isolated from food or clinical samples did not impair the usefulness of the procedure. Thus, our approach constitutes a fast, easy and low-cost alternative for L. monocytogenes diagnosis and serotyping and may be useful for surveillance and epidemiological investigation programs.

关键词： listeria monocytogenes Diagnosis Serotypes Identification LAMP

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

The Effects of Heat Shock on the D-Values of listeria monocytogeneson Selected Seafood Matrices

引用

Advances in Microbiology 2015年第8期5卷 580-585页

作者： Michael V. Wood Aswathy Sreedharan Rachael Silverberg Alina N. Balaguero Keith R. Schneider Department of Food Science and Human Nutrition University of Florida Gainesville FL USA

With more ready-to-eat foods and increased shelf-lives, prevention of listeria monocytogenes contamination has become a necessity for the food industry. This study examined the effects of sublethal heat treatment on the decimal reduction time (D-values) of three L. monocytogenes serotypes (1/2a, 1/2b, 4c), and non-pathogenic L. innocua. The D70 (D-value at 70℃) values of heat-shocked (HS) and non-heat-shocked (NHS) listeria grown in tryptic soy broth (TSB) were determined. The D70 values of HS L. monocytogenes serotype 1/2a and L. innocua were significantly higher compared to NHS cultures, although by 48 h, the values returned to NHS levels. When HS and NHS 1/2a and 1/2b were inoculated on crab meat and cooked shrimp, the D70 values of HS cultures were at least 2-fold higher, compared to when they were grown in TSB. This increase in heat resistance for the HS cultures may be attributed to the protective effect of the seafood matrix itself.

关键词： listeria monocytogenes Ready-to-Eat Seafood Heat Shock D-Value

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Antibiotic and Bacteriocin Sensitivity of listeria monocytogenesStrains Isolated from Different Foods

引用

Food and Nutrition Sciences 2012年第3期3卷 363-368页

作者： Evrim Gunes Altuntas Deniz Kocan Serap Cosansu Kamuran Ayhan Vijay K. Juneja Luis Materon Agricultural Research Service United States Department of Agriculture (USDA) Eastern Regional Research Center Microbial Food Safety Research Unit Wyndmoor USA Biology Department University of Texas Pan American Edinburg USA. Food Engineering Department Engineering Faculty Ankara University Ankara Turkey Food Engineering Department Engineering Faculty Sakarya University Sakarya Turkey Food Technology Department Guzelyurt Vocational School Aksaray University Guzelyurt Turkey

This study aimed to determine the antibiotic and bacteriocin sensitivity of listeria monocytogenes strains isolated from animal derived foods. With disc diffusion assay, all fourteen L. monocytogenes strains were suscepti-ble to the antibiotics, including penicillin G, vancomycin, tetracycline, chloramphenicol, rifampicin, erythromycin, gentamicin and trime- thoprim. However, the percentages of fosfomycin and streptomycin resistances were 92.9% and 7.1%, respectively. Multiple resistances were not observed among the tested strains. The results of well diffusion assays showed that all strains were inhibited by the cell-free supernatant of a bacteriocin-producing strain, Pediococcus acidilactici 13, with the inhibition zones ranging from 16.00 to 24.50 mm. These results provide useful information on antibiotic resistance of L. monocytogenes strains isolated from foods, and can potentially be used to develop bacteriocin-based interventions to guard against the hazards associated with L. monocytogenes in ready-to-eat meat and poultry products.

关键词： listeria Antibiotic Bacteriocin

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：