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mycoplasma pneumoniae

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https://www.readbyqxmd.com/read/28811193/a-novel-detection-procedure-for-mutations-in-the-23s-rrna-gene-of-mycoplasma-pneumoniae-with-peptide-nucleic-acid-mediated-loop-mediated-isothermal-amplification-assay
#1
Jun Sakai, Takuya Maeda, Norihito Tarumoto, Kazuhisa Misawa, Shinsuke Tamura, Kazuo Imai, Toshiyuki Yamaguchi, Satoshi Iwata, Takashi Murakami, Shigefumi Maesaki
Rapid and easy detection of a single nucleotide point mutation of bacterial genes, which is directly linked to drug susceptibility, is essential for the proper use of antimicrobial agents. Here, we established a detection method using a peptide nucleic acid mediated loop-mediated amplification (LAMP) assay for macrolide (ML)-susceptible Mycoplasma pneumoniae. This assay specifically detected the absence of missense mutations encoding the central loop of domain V in the gene encoding 23S rRNA, which can reduce the affinity for MLs and subsequently generate ML-resistant strains of M...
August 12, 2017: Journal of Microbiological Methods
https://www.readbyqxmd.com/read/28810609/value-of-serum-mycoplasma-pneumoniae-immunoglobulin-in-the-diagnosis-of-mycoplasma-related-pneumonia-in-newborns
#2
Yan Dong, Wei Lv, Zhen Lin
Mycoplasma pneumoniae (M. pneumoniae) is an important pathogen of neonatal acquired pneumonia in newborns. Rapid and accurate diagnosis of M. pneumoniae infection is critical because timely antibiotic therapy can reduce drug overuse and prevent the development of bacterial resistance. Anti-M. pneumoniae immunoglobulin M (IgM) is an indicator of early infection that can persist for several months. Studies have shown that anti-M. pneumoniae IgA in adults is a reliable indicator of early M. pneumoniae infection...
August 2017: Experimental and Therapeutic Medicine
https://www.readbyqxmd.com/read/28807095/simultaneous-detection-of-13-key-bacterial-respiratory-pathogens-by-combination-of-multiplex-pcr-and-capillary-electrophoresis
#3
Lu Xi Jiang, Hong Yu Ren, Hai Jian Zhou, Si Hong Zhao, Bo Yan Hou, Jian Ping Yan, Tian Qin, Yu Chen
OBJECTIVE: Lower respiratory tract infections continue to pose a significant threat to human health. It is important to accurately and rapidly detect respiratory bacteria. To compensate for the limits of current respiratory bacteria detection methods, we developed a combination of multiplex polymerase chain reaction (PCR) and capillary electrophoresis (MPCE) assay to detect thirteen bacterial pathogens responsible for lower respiratory tract infections, including Streptococcus pneumoniae, Haemophilus influenzae, Moraxella catarrhalis, Pseudomonas aeruginosa, Klebsiella pneumoniae, Escherichia coli, Staphylococcus aureus, Mycoplasma pneumoniae, Legionella spp...
August 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28777207/five-year-study-of-viral-etiology-and-features-of-febrile-respiratory-tract-infections-with-prolonged-fever-in-japanese-pediatric-outpatients
#4
Michimaru Hara, Shinichi Takao
Over 5 years, we prospectively collected nasopharyngeal aspirate samples from pediatric outpatients with prolonged fever (≥ 5 days, ≥ 38.0 °C). Real-time PCR assays identifying 13 different respiratory viruses and mycoplasma pneumoniae were performed on the test samples. Real-time PCR assays identified at least one pathogen in 273 (75.4%) of the 362 samples assessed (239 single and 34 multiple infections).
August 1, 2017: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/28760082/mycoplasma-pneumoniae-23s-rrna-a2063g-mutation-does-not-influence-chest-radiography-features-in-children-with-pneumonia
#5
Huan Deng, Jun Rui, Deyu Zhao, Feng Liu
Objective To measure the rate of the A2063G mutation in the Mycoplasma pneumoniae ( M. pneumoniae) 23S rRNA domain V in children with pneumonia and to determine the correlation between radiographic findings and the presence of the A2063G mutation. Methods Patients who were hospitalized with a confirmed diagnosis of M. pneumoniae pneumonia were enrolled in this study. M. pneumoniae strains were collected for genotype analysis. Chest radiography was performed on all children prior to and following macrolide treatment...
January 1, 2017: Journal of International Medical Research
https://www.readbyqxmd.com/read/28756815/establishment-of-a-predictive-diagnostic-model-for-acute-mycoplasma-pneumoniae-infection-in-elderly-patients-with-community-acquired-pneumonia
#6
Hong Li Xiao, De Li Xin, Yan Wang, Li Jian Cui, Xiao Ya Liu, Song Liu, Li Hong Song, Chun Ling Liu, Cheng Hong Yin
We established a diagnostic model to predict acute Mycoplasma pneumoniae (M. pneumonia) infection in elderly Community-acquired pneumonia (CAP) patients. We divided 456 patients into acute and non-acute M. pneumoniae infection groups. Binary logistic regression and receiver operating characteristic (ROC) curves were used to establish a predictive model. The following independent factors were identified: age ⋝ 70 years; serum cTNT level ⋝ 0.05 ng/mL; lobar consolidation; mediastinal lymphadenopathy; and antibody titer in the acute phase ⋝ 1:40...
July 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28752681/spontaneous-pneumomediastinum-emphysema-and-pulmonary-bullae-associated-with-refractory-mycoplasma-pneumoniae-pneumonia-in-a-child
#7
Lilin Huang, Huajia Chen, Shumei Peng
We report a 21-month-old child with spontaneous pneumomediastinum (PM), emphysema, and pulmonary bullae caused by Mycoplasma pneumonia (M. pneumoniae) pneumonia. The patient presented with stubborn dyspnea and wheezing although received integrated treatment, including anti-infection, anti-inflammation, and intravenous immunoglobulin. This case was unique in that pulmonary bullae kept increasing. PM and emphysema were refractory in our patient, which have been reported as benign and limited. Surgical intervention was implemented to ultimately cure the case...
July 28, 2017: Pediatric Pulmonology
https://www.readbyqxmd.com/read/28752116/multiple-drug-sensitization-syndrome-a-distinct-phenotype-associated-with-unrecognized-mycoplasma-pneumonia-infection
#8
Yumi Aoyama, Fumihisa Sawada, Eiichi Makino, Tetsuo Shiohara
No abstract text is available yet for this article.
July 2017: JAAD Case Reports
https://www.readbyqxmd.com/read/28751888/identification-of-the-components-involved-in-cyclic-di-amp-signaling-in-mycoplasma-pneumoniae
#9
Cedric Blötz, Katrin Treffon, Volkhard Kaever, Frank Schwede, Elke Hammer, Jörg Stülke
Bacteria often use cyclic dinucleotides as second messengers for signal transduction. While the classical molecule c-di-GMP is involved in lifestyle selection, the functions of the more recently discovered signaling nucleotide cyclic di-AMP are less defined. For many Gram-positive bacteria, c-di-AMP is essential for growth suggesting its involvement in a key cellular function. We have analyzed c-di-AMP signaling in the genome-reduced pathogenic bacterium Mycoplasma pneumoniae. Our results demonstrate that these bacteria produce c-di-AMP, and we could identify the diadenylate cyclase CdaM (MPN244)...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28747412/severe-asymptomatic-rhabdomyolysis-complicating-a-mycoplasma-pneumonia
#10
Alex Gosselt, Jobien Olijhoek, Thomas Wierema
Rhabdomyolysis is a very rare and serious extrapulmonary manifestation of a Mycoplasma pneumoniae infection. We describe a case of a 47-year-old male patient who presented with progressive dyspnoea, hypoxaemia and cough during the last 3 days. He had no relevant muscular complaints but was diagnosed with severe rhabdomyolysis for which he was treated with hyperhydration. Molecular diagnostics confirmed M. pneumoniae as the causative agent and our patient was successfully treated with doxycycline.Only a few cases of rhabdomyolysis complicating a M...
July 26, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28743917/a-rapid-low-cost-and-microfluidic-chip-based-system-for-parallel-identification-of-multiple-pathogens-related-to-clinical-pneumonia
#11
Guoliang Huang, Qin Huang, Lan Xie, Guangxin Xiang, Lei Wang, Hui Xu, Li Ma, Xianbo Luo, Juan Xin, Xinying Zhou, Xiangyu Jin, Lei Zhang
An air-insulated microfluidic chip was designed for the automatic centrifugal distribution of samples to 24-test cells, enabling the parallel identification of multiple clinical pneumonia-related pathogens in 1.45-μL reactions without cross-contamination in 45 min. A portable nucleic acid analyzer that integrates mechanical, confocal optical, electronic, and software functions was also developed to collect fluorescence data in a Ø3 mm imaging field near the optical diffraction limit for highly sensitive fluorescence detection of nucleic acid amplification in real time...
July 25, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28743259/a-comparison-study-between-gexp-based-multiplex-pcr-and-serology-assay-for-mycoplasma-pneumoniae-detection-in-children-with-community-acquired-pneumonia
#12
Le Wang, Zhishan Feng, Mengchuan Zhao, Shuo Yang, Xiaotong Yan, Weiwei Guo, Zhongren Shi, Guixia Li
BACKGROUND: Diagnosis of community-acquired pneumonia (CAP) caused by Mycoplasma pneumoniae (Mp) in children has been hampered by difficulty in obtaining convalescent serum and time constraints. In this study, the two diagnostic assays that targeted respectively on Mp-antibody and Mp-DNA were retrospectively investigated. METHODS: A total of 3146 children were clinically diagnosed to have CAP and were confirmed by chest X-ray during March 2015 to February 2016 in Children's hospital of Hebei Province (China)...
July 25, 2017: BMC Infectious Diseases
https://www.readbyqxmd.com/read/28742802/determinants-for-swine-mycoplasmal-pneumonia-reproduction-under-experimental-conditions-a-systematic-review-and-recursive-partitioning-analysis
#13
Beatriz Garcia-Morante, Joaquim Segalés, Emmanuel Serrano, Marina Sibila
One of the main Mycoplasma hyopneumoniae (M. hyopneumoniae) swine experimental model objectives is to reproduce mycoplasmal pneumonia (MP). Unfortunately, experimental validated protocols to maximize the chance to successfully achieve lung lesions induced by M. hyopneumoniae are not available at the moment. Thus, the objective of this work was to identify those factors that might have a major influence on the effective development of MP, measured as macroscopic lung lesions, under experimental conditions. Data from 85 studies describing M...
2017: PloS One
https://www.readbyqxmd.com/read/28741040/detection-and-phylogenetic-analysis-of-mycoplasma-hyopneumoniae-from-tibetan-pigs-in-western-china
#14
Gang Qiu, Yapei Rui, Kun Li, Shucheng Huang, Zhaoqing Han, Xiaoqiang Wang, Wenteng Jiang, Houqiang Luo, Yanfang Lan, Jiakui Li
Enzootic pneumonia (EP), often caused by Mycoplasma hyopneumoniae, occurs in Tibetan pigs between October and December in Western China. The aim of this study was to determine the prevalence of M. hyopneumoniae in Tibetan pig herds and also the prevalence of infection. M. hyopneumoniae was detected using enzyme-linked immunosorbent assay, polymerase chain reaction (PCR), and 16S rRNA sequencing. Twenty-nine inflammatory gross-lesions were observed in 155 lungs of slaughtered pigs. Invasion of focal lymphocytes was confirmed by paraffin sectioning and hematoxylin-eosin staining of lung sections...
July 24, 2017: Tropical Animal Health and Production
https://www.readbyqxmd.com/read/28730137/pediatric-mycoplasma-pneumoniae-infection-presenting-with-acute-cholestatic-hepatitis-and-other-extrapulmonary-manifestations-in-the-absence-of-pneumonia
#15
Won Jae Song, Ben Kang, Hwa Pyung Lee, Joongbum Cho, Hae Jeong Lee, Yon Ho Choe
Mycoplasma pneumoniae infections mainly involve respiratory tract; however, also can manifestate other symptoms by site involved. Extrapulmonary manifestations of M. pneumoniae infection are rarely known to occur without pneumonia. Herein we report a case of a 9-year-old boy who presented with acute cholestatic hepatitis in the absence of pneumonia. Rhabdomyolysis, skin rash, and initial laboratory results suspicious of disseminated intravascular coagulopathy were also observed in this patient. M. pneumoniae infection was identified by a 4-fold increase in immunoglobulin G antibodies to M...
June 2017: Pediatric Gastroenterology, Hepatology & Nutrition
https://www.readbyqxmd.com/read/28729262/genome-sequence-of-canine-polyomavirus-in-respiratory-secretions-of-dogs-with-pneumonia-of-unknown-etiology
#16
Eric Delwart, Beatrix Kapusinszky, Patricia A Pesavento, Marko Estrada, M Alexis Seguin, Christian M Leutenegger
We report here the first canine polyomavirus genome, identified by metagenomics in respiratory secretions of two dogs with severe pneumonia, which tested negative for all canine respiratory pathogens except Mycoplasma cynos The isolate, Canis familiaris polyomavirus 1 (DogPyV-1), is a beta polyomavirus whose closest known LT antigen relatives are primate polyomaviruses.
July 20, 2017: Genome Announcements
https://www.readbyqxmd.com/read/28728317/mycoplasma-pneumoniae-associated-hepatitis-without-lung-involvement
#17
Han Taek Jeong, Jae Young Oh, Jung Eun Song, Byung Seok Kim, Chang Hyeong Lee
Mycoplasma pneumoniae (M. pneumoniae) is a major cause of community acquired respiratory infections. And it also causes a number of extrapulmonary manifestations including cardiovascular, dermatological, musculoskeletal, and hematological systems. But, acute hepatitis without lung involvement is rare in adults. Here, we report a case of 32-year-old man who presented with fever, chilling, myalgia, and headache. Biochemical analysis showed severely impaired liver function and leukopenia. Laboratory tests and liver biopsy demonstrated a hepatocellular pattern of M...
July 25, 2017: Korean Journal of Gastroenterology, Taehan Sohwagi Hakhoe Chi
https://www.readbyqxmd.com/read/28728264/-exploratory-research-on-diagnostic-essentials-of-pediatric-tuberculous-pleurisy
#18
H Xu, J R Liu, S Y Zhao
Objective: To summarize the clinical diagnostic essentials of pediatric tuberculous pleurisy so as to reduce the misdiagnosis rate. Method: A retrospective study was conducted on 113 cases of tuberculous pleurisy who were seen from August 2006 to September 2014 in the second Department of Respiratory Medicine, Beijing Children's Hospital Affiliated to Capital Medical University. Meanwhile, another 113 cases of children over 5 years of age with mycoplasma pneumoniae pneumonia complicated with pleural effusion were randomly selected as control group...
July 2, 2017: Zhonghua Er Ke za Zhi. Chinese Journal of Pediatrics
https://www.readbyqxmd.com/read/28726662/cytokines-as-the-predictors-of-severe-mycoplasma-pneumoniae-pneumonia-in-children-review
#19
I Chkhaidze, N Kapanadze
In spite of many attempts to differentiate bacterial from viral disease and predict severity and outcome, the etiologic diagnosis of paediatric community acquired pneumonia and the estimation of potential outcomes remain unsolved problems in most cases. Mycoplasma pneumoniae is one of the major pathogens causing CAP in children. Although MP infection was traditionally thought to be a self-limited process, more and more severe cases even fatal cases of MP infections were reported in recent years. So it is essential for pediatricians to recognize severe or refractory or severe MP early, treat it promptly and prevent the progress of the disease...
June 2017: Georgian Medical News
https://www.readbyqxmd.com/read/28725301/review-of-infectious-etiology-of-acute-pancreatitis
#20
REVIEW
Prashanth Rawla, Sathyajit S Bandaru, Anantha R Vellipuram
While gallstones and alcoholism are widely known to be the most common causative agents of acute pancreatitis, about 10% of cases are thought to be caused by infectious microorganisms. These microorganisms include viruses (e.g. mumps, Coxsackie B, and hepatitis), bacteria (e.g. Mycoplasma pneumoniae and leptospirosis), and parasites (e.g. Ascaris lumbricoides, Fasciola hepatica, and hydatid disease). Each organism causes acute pancreatitis through diverse mechanisms. The review is primarily conducted in an attempt to provide a better understanding of the possibility of acute pancreatitis presenting as a complication relating to these organisms, and the aim is to guide future diagnoses, management, and predictions of complications...
June 2017: Gastroenterology Research
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