keyword
MENU ▼
Read by QxMD icon Read
search

Botulism

keyword
https://www.readbyqxmd.com/read/28534855/rbc-adherence-of-immune-complexes-containing-botulinum-toxin-improves-neutralization-and-macrophage-uptake
#1
Fetweh H Al-Saleem, Rashmi Sharma, Rama Devudu Puligedda, Md Elias, Chandana Devi Kattala, Paul M Simon, Lance L Simpson, Scott K Dessain
In the paralytic disease botulism, the botulinum neurotoxin (BoNT) passes through the bloodstream to reach and inactivate neuromuscular junctions. Monoclonal antibodies (mAbs) may be useful BoNT countermeasures, as mAb combinations can rapidly clear BoNT from the blood circulation. We have previously shown that the BoNT-neutralizing potency of mAbs can be improved through red blood cell (RBC) immunoadherence. For example, a fusion protein (FP) that adheres biotinylated mAbs to the RBC surface enabled a pair of mAbs to neutralize 5000 LD50 BoNT/A in the mouse protection assay...
May 19, 2017: Toxins
https://www.readbyqxmd.com/read/28524037/-clinical-analysis-of-53-patients-with-clostridium-botulinum-food-poisoning
#2
Peng Zhang, Jianguang Dong, Lili Bai, Zewu Qiu
OBJECTIVE: To analyze the epidemiologic data of patients with Clostridium botulinum food poisoning, and to improve the understanding, diagnosis and treatment of food borne botulism. METHODS: A retrospective study was conducted. Fifty-three patients with Clostridium botulinum food poisoning admitted to Chinese PLA Center of Poisoning and Treatment from January 2009 to December 2016 were enrolled, and they were divided into mild, moderate, and severe groups according to the severity of disease...
May 2017: Zhonghua Wei Zhong Bing Ji Jiu Yi Xue
https://www.readbyqxmd.com/read/28522711/draft-genome-sequences-of-five-brazilian-clostridium-botulinum-group-iii-type-d-c-strains
#3
Cédric Woudstra, Roseane B Brito, Antônio A Fonseca Júnior, Rodrigo O S Silva, Francisco C F Lobato, Patrick Fach
Animal botulism is mainly associated with Clostridium botulinum group III-producing neurotoxin types C, C/D, D, and D/C. In this report, we present the draft genome sequences of the first five strains of Clostridium botulinum type D/C isolated in Brazil and used for vaccination purposes.
May 18, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28500638/adult-intestinal-colonization-botulism-mimicking-brain-death
#4
Brin Freund, Lindsey Hayes, Lucia Rivera-Lara, Charlotte Sumner, Vinay Chaudhry, Kevin Chatham-Stephens, Katharine Benedict, Suzanne Kalb, David Blythe, Richard Brooks, John C Probasco
No abstract text is available yet for this article.
May 13, 2017: Muscle & Nerve
https://www.readbyqxmd.com/read/28489146/acute-muscular-weakness-in-children
#5
Ricardo Pablo Javier Erazo Torricelli
Acute muscle weakness in children is a pediatric emergency. During the diagnostic approach, it is crucial to obtain a detailed case history, including: onset of weakness, history of associated febrile states, ingestion of toxic substances/toxins, immunizations, and family history. Neurological examination must be meticulous as well. In this review, we describe the most common diseases related to acute muscle weakness, grouped into the site of origin (from the upper motor neuron to the motor unit). Early detection of hyperCKemia may lead to a myositis diagnosis, and hypokalemia points to the diagnosis of periodic paralysis...
April 2017: Arquivos de Neuro-psiquiatria
https://www.readbyqxmd.com/read/28480790/wound-botulism-its-neurological-manifestations-treatment-and-outcomes-a-case-series-from-the-glasgow-outbreak-2015
#6
Sarah-Jane Martin, Gillian Penrice, Corinne Amar, Kathie Grant, George H Gorrie
Background and aims We examined the neurological manifestations, treatment and outcomes of a subset of 25 patients within the largest ever outbreak of wound botulism in Europe. Methods and results All 25 cases were intravenous drug users. The most common presenting symptom was dysarthria in 19/25 (76%), followed by dysphagia in 12/25 (48%), blurred vision in 10/25 (40%) and double vision in 8/25 (32%). Microbiological analysis confirmed the diagnosis in nine cases (36%). Duration of admission positively correlated with time to antitoxin, time to wound debridement and female sex...
January 1, 2017: Scottish Medical Journal
https://www.readbyqxmd.com/read/28478747/creation-of-a-virtual-antidotes-network-between-pharmacy-departments-of-catalan-hospitals
#7
Raquel Aguilar-Salmerón, Edurne Fernández de Gamarra-Martínez, Milagros García-Peláez, Antoni Broto-Sumalla, Lidia Martínez-Sánchez, Santiago Nogué-Xarau
Objetive: To design a virtual antidote network between hospitals that could help to locate on-line those hospitals that stocked those antidotes with the highest difficulty in terms of availability, and ensured that the medication was loaned in case of necessity. METHODS: The application was developed by four hospital pharmacists and two clinical toxicologists with the support of a Healthcare Informatics Consultant Company. RESULTS: The antidotes network in Catalonia, Spain, was launched in July 2015...
May 1, 2017: Farmacia Hospitalaria
https://www.readbyqxmd.com/read/28478553/electrochemical-aptamer-scaffold-biosensors-for-detection-of-botulism-and-ricin-proteins
#8
Jessica Daniel, Lisa Fetter, Susan Jett, Teisha J Rowland, Andrew J Bonham
Electrochemical DNA (E-DNA) biosensors enable the detection and quantification of a variety of molecular targets, including oligonucleotides, small molecules, heavy metals, antibodies, and proteins. Here we describe the design, electrode preparation and sensor attachment, and voltammetry conditions needed to generate and perform measurements using E-DNA biosensors against two protein targets, the biological toxins ricin and botulinum neurotoxin. This method can be applied to generate E-DNA biosensors for the detection of many other protein targets, with potential advantages over other systems including sensitive detection limits typically in the nanomolar range, real-time monitoring, and reusable biosensors...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28475321/metal-ions-effectively-ablate-the-action-of-botulinum-neurotoxin-a
#9
Paul T Bremer, Sabine Pellett, James P Carolan, William H Tepp, Lisa M Eubanks, Karen N Allen, Eric A Johnson, Kim D Janda
Botulinum neurotoxin serotype A (BoNT/A) causes a debilitating and potentially fatal illness known as botulism. The toxin is also a bioterrorism threat, yet no pharmacological antagonist to counteract its effects has reached clinical approval. Existing strategies to negate BoNT/A intoxication have looked to antibodies, peptides, or organic small molecules as potential therapeutics. In this work, a departure from the traditional drug discovery mindset was pursued, in which the enzyme's susceptibility to metal ions was exploited...
May 19, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28465161/assessment-of-elisa-as-endpoint-in-neuronal-cell-based-assay-for-bont-detection-using-hipsc-derived-neurons
#10
Sabine Pellett, William H Tepp, Eric A Johnson, Dorothea Sesardic
INTRODUCTION: Botulinum neurotoxins (BoNTs), the causative agents of botulism, are widely used as powerful bio-pharmaceuticals to treat neuro-muscular disorders. Due to the high potency and potential lethality of BoNTs, careful monitoring of the biologic activity of BoNT-based pharmaceuticals is required to ensure safe usage. For decades, the only approved method for potency determination of pharmaceutical BoNTs was the mouse bioassay (MBA), but in recent years improvements in cell-assay technologies have enabled MBA replacement by cell-based assays for specific product evaluations...
April 29, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28464023/heat-shock-and-prolonged-heat-stress-attenuate-neurotoxin-and-sporulation-gene-expression-in-group-i-clostridium-botulinum-strain-atcc-3502
#11
Katja Selby, Gerald Mascher, Panu Somervuo, Miia Lindström, Hannu Korkeala
Foodborne pathogenic bacteria are exposed to a number of environmental stresses during food processing, storage, and preparation, and in the human body. In order to improve the safety of food, the understanding of molecular stress response mechanisms foodborne pathogens employ is essential. Many response mechanisms that are activated during heat shock may cross-protect bacteria against other environmental stresses. To better understand the molecular mechanisms Clostridium botulinum, the causative agent of botulism, utilizes during acute heat stress and during adaptation to stressfully high temperature, the C...
2017: PloS One
https://www.readbyqxmd.com/read/28455330/regulation-of-botulinum-neurotoxin-synthesis-and-toxin-complex-formation-by-arginine-and-glucose-in-clostridium-botulinum-atcc-3502
#12
Chase M Fredrick, Guangyun Lin, Eric A Johnson
Botulinum neurotoxin (BoNT) produced by neurotoxigenic clostridia is the most potent biological toxin known and the causative agent of the paralytic disease botulism. The nutritional, environmental, and genetic regulation of BoNT synthesis, activation, stability, and toxin complex (TC) formation are not well studied. Previous studies indicated that growth and BoNT formation was affected by arginine and glucose in C. botulinum types A and B. In the present study, C. botulinum ATCC 3502 was grown in toxin production medium (TPM) with different levels of arginine, glucose and three products of arginine metabolism, citrulline, proline and ornithine...
April 28, 2017: Applied and Environmental Microbiology
https://www.readbyqxmd.com/read/28450682/clinical-serum-therapy-benefits-cautions-and-potential-applications
#13
Toru Hifumi, Akihiko Yamamoto, Manabu Ato, Kyoko Sawabe, Kazunori Morokuma, Nobuya Morine, Yutaka Kondo, Eiichiro Noda, Atsushi Sakai, Jin Takahashi, Kazuo Umezawa
Blood serum from immunized humans or animals (e.g., horses) contains relevant antibodies and has been used as serum therapy to treat many diseases or envenomation events. The effectiveness of blood serum was initially discovered in 1890 when Kitasato and von Behring observed the effectiveness of this type of therapy against diphtheria and tetanus. Serum therapies played an important role in the advancement of modern medicine prior to the development of penicillin and steroids. At present, several types of serum therapy remain in clinical use...
April 28, 2017: Keio Journal of Medicine
https://www.readbyqxmd.com/read/28441004/insights-into-the-mechanisms-by-which-clostridial-neurotoxins-discriminate-between-gangliosides
#14
Joshua R Burns, Gregory S Lambert, Michael R Baldwin
Botulinum neurotoxins (BoNTs) and tetanus neurotoxin (TeNT) are the causative agents of the paralytic diseases botulism and tetanus, respectively. Entry of toxins into neurons is mediated through initial interactions with gangliosides, followed by binding to a protein co-receptor. Herein, we aimed to understand the mechanism through which individual neurotoxins recognize the carbohydrate motif of gangliosides. Using cell-based and in vitro binding assays, in conjunction with structure-driven site-directed mutagenesis, a conserved hydrophobic residue within the BoNTs that contributes to both affinity and specificity toward Sia5-containing gangliosides was identified...
May 9, 2017: Biochemistry
https://www.readbyqxmd.com/read/28398677/preparing-for-biological-threats-addressing-the-needs-of-pregnant-women
#15
REVIEW
Amelia K Watson, Sascha Ellington, Christina Nelson, Tracee Treadwell, Denise J Jamieson, Dana M Meaney-Delman
Intentional release of infectious agents and biological weapons to cause illness and death has the potential to greatly impact pregnant women and their fetuses. We review what is known about the maternal and fetal effects of seven biological threats: Bacillus anthracis (anthrax); variola virus (smallpox); Clostridium botulinum toxin (botulism); Burkholderia mallei (glanders) and Burkholderia pseudomallei (melioidosis); Yersinia pestis (plague); Francisella tularensis (tularemia); and Rickettsia prowazekii (typhus)...
March 15, 2017: Birth Defects Res
https://www.readbyqxmd.com/read/28393685/immunoproteomics-approach-for-screening-vaccine-candidates-against-the-intestinal-botulism
#16
Arti Sharma, Sarkaraisamy Ponmariappam, Sarita Rani
Intestinal botulism is an infectious form of botulism in which disease results from ingesting spores, which is followed by spore germination and intraluminal production of botulinum neurotoxins over an extended period. Botulinum neurotoxin is produced by endospore forming bacteria called C. botulinum. The immunoproteomic is used to screen the cross reactive immunogenic proteins of C. botulinum type B using C. botulinum type B live spore antiserum. The whole cell proteins are separated by two dimensional gel electrophoresis and transferred to polyvinylidene difluoride membranes...
April 4, 2017: Protein and Peptide Letters
https://www.readbyqxmd.com/read/28374597/-foodborne-botulism-a-re-emerging-public-health-challenge
#17
R Mezencev, C Klement
Human foodborne botulism is an intoxication caused by ingestion of botulinum neurotoxins (BoNT) of serotypes A, B, E, and rarely also serotype F, produced in contaminated food by anaerobic bacteria Clostridium botulinum group I, group II, or by toxigenic strains of C. butyricum and C. baratii. BoNT-producing Clostridia are ubiquitously distributed in the environment and, under suitable conditions, they can enter the food chain, proliferate and produce BoNT in a variety of foods. In the past, the risk of foodborne botulism was primarily associated with homemade canned foods; however, the epidemiological importance of commercial and restaurant food is increasing nowadays...
2017: Epidemiologie, Mikrobiologie, Imunologie
https://www.readbyqxmd.com/read/28360447/botulism-outbreak-in-a-family-after-ingestion-of-locally-produced-cheese
#18
Shahram Rafie, Shokrollah Salmanzadeh, Asieh Mehramiri, Adel Nejati
Botulism is one of the most important foodborne diseases and is caused by Clostridium botulinum toxin. The main manifestations are flaccid muscle paralysis and cranial nerve palsies. Botulism is an essential health problem because of its high mortality. The diagnosis of botulism, especially in sporadic cases, is a medical challenge and a high clinical suspicion is necessary for early recognition. So, every physician should be familiar with its signs and symptoms for early detection and treatment. We describe a family with dysphasia and acute paralysis after the ingestion of locally made cheese...
March 2017: Iranian Journal of Medical Sciences
https://www.readbyqxmd.com/read/28359137/an-ultrasensitive-gold-nanoparticle-based-lateral-flow-test-for-the-detection-of-active-botulinum-neurotoxin-type-a
#19
Jing Liu, Shan Gao, Lin Kang, Bin Ji, Wenwen Xin, Jingjing Kang, Ping Li, Jie Gao, Hanbin Wang, Jinglin Wang, Hao Yang
Botulism is a severe and potentially lethal paralytic disease caused by several botulinum neurotoxin-producing Clostridia spp. In China, the majority of the cases caused by botulism were from less-developed rural areas. Here, we designed specific substrate peptides and reconfigured gold nanoparticle-based lateral flow test strip (LFTS) to develop an endopeptidase-based lateral flow assay for the diagnosis of botulism. We performed this lateral flow assay on botulinum neurotoxin-spiked human serum samples. The as-prepared LFTS had excellent performance in the detection of botulinum neurotoxin using only 1 μL of simulated serum, and its sensitivity and specificity were comparable to that of mouse lethality assay...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28348769/clostridium-baratii-a-rare-case-of-pneumonia-associated-with-an-alzheimer-patient-in-rio-de-janeiro-brazil
#20
Carla Ormundo Gonçalves Ximenes Lima, Vinicius Magno da Rocha, Eliane de Oliveira Ferreira, Joaquim Santos Filho, Lucia Rodrigues Serradas, Rodrigo Otávio Silveira Silva, Francisco Carlos Faria Lobato, Regina Maria Cavalcanti Pilotto Domingues
INTRODUCTION: Clostridium baratii is rarely associated with human diseases. Infection is usuallcaused by ingestion of contaminated food, and infant botulism is the most common clinical presentation. CASE REPORT: Here we report a case of pneumonia by a non-toxigenic strain of C. baratii in an Alzheimer 70-year-old male with sepsis in Rio de Janeiro, Brazil. The micro-organism was identified by phenotypical tests, mass spectrometry (MALDI-TOF), DNA amplification (PCR) and sequencing of the 16S rRNA gene...
August 2016: JMM Case Reports
keyword
keyword
325
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"