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https://www.readbyqxmd.com/read/29334446/pediatric-community-acquired-pneumonia
#1
Stephanie Posten, Jennifer Reed
Pediatric community acquired pneumonia (CAP) is frequently encountered by medical providers and is one of the most common reasons for hospital admission. CAP is known to cause significant morbidity and mortality, causing greater than 2 million deaths annually worldwide in children younger than five years old. The Infectious Disease Society of America (IDSA) released guidelines in 2011 with recommendations regarding appropriate diagnosis and management of community acquired pneumonia for children greater than 3 months age, with the goal of assisting providers in clinical decision making...
December 2017: South Dakota Medicine: the Journal of the South Dakota State Medical Association
https://www.readbyqxmd.com/read/29333787/detection-of-ureaplasma-species-by-a-semi-quantitative-pcr-test-in-urine-samples-can-it-predict-clinical-significance
#2
Merav Strauss, Raul Colodner, Dana Sagas, Azmi Adawi, Hanna Edelstein, Bibiana Chazan
BACKGROUND: Ureaplasma species (Usp) are the most prevalent genital Mycoplasma isolated from the urogenital tract of both men and women. Usp may be commensals in the genital tract but may also be contributors to a number of pathological conditions of the genital tract. Because they can also just colonize the genital tract of healthy people, their pathogenic role can be difficult to prove. OBJECTIVES: The aim of the study was to evaluate the efficacy of a quantitative polymerase chain reaction (qPCR) method for the discrimination between infection and colonization by measuring prevalence of Usp in asymptomatic versus symptomatic patients...
January 2018: Israel Medical Association Journal: IMAJ
https://www.readbyqxmd.com/read/29331619/mycoplasma-pneumoniae-and-toll-like-receptors-a-mutual-avenue
#3
REVIEW
M Naghib, M Hatam-Jahromi, M Niktab, R Ahmadi, A Kariminik
Mycoplasma pneumoniae is an intracellular bacterium leading to several complications in humans. M. pneumoniae is cleared in some cases and induces complications in others. The main responsible mechanisms regarding the controversy are yet to be cleared. Toll-like receptors (TLRs) are the important cell membrane and intracellular receptors which recognize a wide range of microbial macromolecules. The roles of TLRs in the eradication of several pathogens and also induction of their related complications have been demonstrated...
January 10, 2018: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/29331467/canadian-national-dairy-study-herd-level-milk-quality
#4
C A Bauman, H W Barkema, J Dubuc, G P Keefe, D F Kelton
The objective of this study was to estimate Canadian national milk quality parameters and estimate the bulk tank milk (BTM) prevalence of 4 mastitis pathogens, Staphylococcus aureus, Streptococcus agalactiae, Mycoplasma bovis, and Prototheca spp., on Canadian dairy farms. A questionnaire was sent to all Canadian dairy producers. Of the 1,062 producers who completed the questionnaire, 374 producers from across the country were visited and milking hygiene was assessed. Farm-level milk quality data for all Canadian dairy producers was collected from the provincial marketing boards and combined with the questionnaire and farm visit data...
January 10, 2018: Journal of Dairy Science
https://www.readbyqxmd.com/read/29329577/respiratory-explants-as-a-model-to-investigate-early-events-of-contagious-bovine-pleuropneumonia-infection
#5
Giovanni Di Teodoro, Giuseppe Marruchella, Andrea Di Provvido, Gianluca Orsini, Gaetano Federico Ronchi, Anna Rita D'Angelo, Nicola D'Alterio, Flavio Sacchini, Massimo Scacchia
Contagious bovine pleuropneumonia (CBPP) is a severe disease caused by Mycoplasma mycoides subsp. mycoides (Mmm). Knowledge on CBPP pathogenesis is fragmented and hampered by the limited availability of laboratory animal and in vitro models of investigation. The purpose of the present study is to assess respiratory explants as useful tools to study the early stages of CBPP. Explants were obtained from trachea, bronchi and lungs of slaughtered cattle, tested negative for Mycoplasma spp. and for the major bacterial and viral respiratory pathogens...
January 12, 2018: Veterinary Research
https://www.readbyqxmd.com/read/29327955/co-occurrence-of-mycoplasma-species-and-pigeon-herpesvirus-1-infection-in-racing-pigeons-columba-livia
#6
Tom Hellebuyck, Stephan Göbel, Frank Pasmans, Connie Adriaensen, An Martel
Oropharyngeal swab samples were collected from 438 live racing pigeons ( Columba livia), with and without signs of respiratory disease, that were housed in 220 lofts in 3 provinces in the western part of the Netherlands. Polymerase chain reaction (PCR) was used to identify Mycoplasma species and pigeon herpesvirus-1 (PHV-1) from the samples. In 8.6% of the pigeon lofts tested, signs of respiratory disease were present in pigeons at sampling, and in 30.9% of the sampled pigeon lofts, respiratory signs were observed in pigeons during the 6-month period immediately before sampling...
December 2017: Journal of Avian Medicine and Surgery
https://www.readbyqxmd.com/read/29326371/mycoplasma-pneumoniae-infection-presenting-as-stroke-and-meningoencephalitis-with-aortic-and-subclavian-aneurysms-without-pulmonary-involvement
#7
Pournamy Sarathchandran, Abubaker Al Madani, Ayman M Alboudi, Jihad Inshasi
A 39-year-old Philipino man presented with acute onset fever and headache. Neurological examination was normal except for neck stiffness. There was no history of chest pain, cough or breathlessness. Cerebrospinal fluid (CSF) showed a mild increase in protein with normal sugar and lymphocytic pleocytosis. CSF PCR for herpes simplex and varicella zoster virus was negative. He developed acute right haemiplegia a week after hospitalisation. MRI showed acute infarct in the left centrum semiovale. His angiogram showed aneurysm in the left subclavian artery and aortic arch...
January 11, 2018: BMJ Case Reports
https://www.readbyqxmd.com/read/29318876/on-demand-modulation-of-bacterial-cell-fates-on-multifunctional-dynamic-substrates
#8
Inseong Choi, Jinhwan Lee, Wontae Kim, Hyunook Kang, Se Won Bae, Rakwoo Chang, Sunghyun Kim, Woon-Seok Yeo
This paper reports unprecedented dynamic surfaces based on zwitterionic low density self-assembled monolayers (LDSAMs) of alkanethiolates on gold, which integrate three interconvertible states - bacteria-adherable, bactericidal, and nonfouling states - through electrical modulations. The conformations of alkanethiolates were electrically modulated to generate zwitterionic, anionic, and cationic surfaces, which responded differently to bacteria and determined the fate of bacteria. Furthermore, the reversible switching of multi-functions of the surface was realized for killing bacteria and subsequently releasing dead bacteria from the surface...
January 10, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29318796/recurrent-guillain-barr%C3%A3-syndrome-following-urinary-tract-infection-by-escherichia-coli
#9
Yoon Sik Jo, Jin Yong Choi, Hong Chung, Yuseok Kim, Sang Jun Na
Recurrent Guillain-Barré syndrome (GBS) is a rare, immune-mediated disease of the peripheral nervous system. It has been reported to occur at intervals ranging from four months to 10 years; published case studies suggest that 1%-6% of patients who have had GBS will experience recurrent attacks. The most commonly identified infections coinciding with GBS are Campylobacter jejuni, Haemophilus influenzae, Mycoplasma pneumonia, and cytomegalovirus, while an antecedent infection with Escherichia coli is very uncommon...
January 22, 2018: Journal of Korean Medical Science
https://www.readbyqxmd.com/read/29318527/mycoplasma-pneumoniae-in-community-acquired-lower-respiratory-tract-infections
#10
Surinder Kumar, Indu Bala Garg, Gulshan Rai Sethi
OBJECTIVE: To determine the role of Mycoplasma pneumoniae (M. pneumoniae) in pediatric lower respiratory tract infections (LRTIs) employing serological tests and polymerase chain reaction (PCR) analysis. METHODS: In this prospective study, 200 children aged 6 mo to 12 y hospitalized with acute LRTIs were investigated for M. pneumoniae. Serum samples were collected for serological analysis of M. pneumoniae. Throat swab samples were obtained on admission to amplify 277-base pair region of 16S rDNA gene of M...
January 10, 2018: Indian Journal of Pediatrics
https://www.readbyqxmd.com/read/29316971/mycoplasma-bovis-co-infection-with-bovine-viral-diarrhea-virus-in-bovine-macrophages
#11
Nina Bürgi, Christoph Josi, Sibylle Bürki, Matthias Schweizer, Paola Pilo
Several studies suggest that synergisms between Mycoplasma bovis and other microorganisms might exacerbate disease outcome of bovine mycoplasmosis. Screening several bovine cell types to assess their potential use as in vitro infection models for M. bovis, it was observed that a widely used cell line of bovine macrophages (Bomac cells) is in fact persistently infected with bovine viral diarrhea virus (BVDV). The cell line was first cured of this virus allowing comparative studies between both cell lines. Subsequently, uptake and co-culture of two M...
January 9, 2018: Veterinary Research
https://www.readbyqxmd.com/read/29313203/prevalence-and-antimicrobial-resistance-of-ureaplasma-spp-and-mycoplasma-hominis-isolated-from-semen-samples-of-infertile-men-in-shanghai-china-from-2011-to-2016
#12
Y-H Zhou, H-X Ma, Y Yang, W-M Gu
This study was conducted to estimate the prevalence and antimicrobial resistance rate of Ureaplasma spp. and Mycoplasma hominis that were isolated from the semen samples of infertile males in Shanghai, China from 2011 to 2016. A total of 5016 infertile males and 412 healthy male controls were examined. The cultivation, identification, and antimicrobial susceptibilities of Ureaplasma spp. and M. hominis were assessed by using a Mycoplasma IST kit that was performed in parallel to selective solid agar cultivation...
January 8, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29312828/profiling-of-subgingival-plaque-biofilm-microbiota-in-female-adult-patients-with-clear-aligners-a-three-month-prospective-study
#13
Runzhi Guo, Yunfei Zheng, Hao Liu, Xiaobei Li, Lingfei Jia, Weiran Li
Background: Clear aligners are well known for facilitating oral hygiene maintenance and decreasing susceptibility to periodontal diseases as compared to conventional fixed appliances. However, few research studies focus on the subgingival microbial community during clear aligner treatment (CAT). Hence, this study investigates changes of the subgingival microbial community and its association with clinical characteristics during the first three months of CAT. Methods: Ten female patients with clear aligners were enrolled in this study...
2018: PeerJ
https://www.readbyqxmd.com/read/29311457/-intestinal-microbiota-in-migrating-barn-swallows-around-osaka
#14
Takehiko Kenzaka, Kenji Kataoka, Takashi Fujimitsu, Katsuji Tani
 Migratory birds are considered as vectors of infectious diseases, owing to their potential for transmitting pathogens over large distances. The populations of barn swallow (Hirundo rustica) migrate from Southeast Asia to the Japanese mainland during spring and migrate back to Southeast Asia during autumn. This migratory population is estimated to comprise approximately hundreds to thousands of individuals per year. However, to date, not much is known about the gastrointestinal microbiota of the barn swallow...
2018: Yakugaku Zasshi: Journal of the Pharmaceutical Society of Japan
https://www.readbyqxmd.com/read/29311238/bacterial-pathogen-emergence-required-more-than-direct-contact-with-a-novel-passerine-host
#15
Molly Staley, Geoffrey E Hill, Chloe C Josefson, Jonathan W Armbruster, Camille Bonneaud
While direct contact may sometimes be sufficient to allow a pathogen to jump into a new host species, in other cases fortuitously adaptive mutations that arise in the original donor host are also necessary. Viruses have been the focus of most host shift studies, so less is known about the importance of ecological versus evolutionary processes to successful bacterial host shifts. Here we tested whether direct contact with the novel host was sufficient to enable the mid-1990s jump of the bacterium Mycoplasma gallisepticum from domestic poultry into house finches (Haemorhous mexicanus)...
January 8, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29311234/mycoplasma-bovis-induced-inhibition-of-bovine-pbmc-proliferation-is-ameliorated-after-blocking-the-immune-inhibitory-programmed-death-1-pd-1-receptor
#16
Muhammad Suleman, Farhan S Cyprian, Steve Jimbo, Teresia Maina, Tracy Prysliak, Claire Windeyer, Jose Perez-Casal
Mycoplasma bovis (M. bovis) induced-immune suppression is a major obstacle faced by the host for controlling infections. M. bovis impairment of antigen-specific T-cells responses is achieved through inhibiting the proliferation of peripheral-blood mononuclear cells (PBMC). This impairment may contribute to the persistence of M. bovis infection in various sites including lungs and its systemic spread to various organs like joints, with the underlying mechanisms remaining elusive. Here, we elucidated the role of the immune-inhibitory receptor programmed death-1 (PD-1) and its ligand (PD-L1) in M...
January 8, 2018: Infection and Immunity
https://www.readbyqxmd.com/read/29308834/severe-acrocyanosis-precipitated-by-cold-agglutinin-secondary-to-infection-with-mycoplasma-pneumoniae-in-a-pediatric-patient
#17
Bernadett Mosdósi, Zoltán Nyul, Arnold Nagy, Kata Bölcskei, Tamás Decsi, Zsuzsanna Helyes
This is the first report describing a severe form of cold agglutinin-induced acrocyanosis with cutaneous necrosis after Mycoplasma infection in a 9-year-old patient without any other severe symptoms and laboratory alterations. We also present the results of two non-invasive methods used to determine the viability of tissues, degree of tissue perfusion impairment, and the responsiveness of the microvasculature. Laser Doppler flowmetry and laser speckle contrast imaging, both suitable to measure tissue blood perfusion non-invasively, have been used in the diagnosis and follow-up of various peripheral vascular diseases...
December 31, 2017: Croatian Medical Journal
https://www.readbyqxmd.com/read/29302815/long-lasting-cough-in-an-adult-german-population-incidence-symptoms-and-related-pathogens
#18
Raphael Weinberger, Marion Riffelmann, Nicole Kennerknecht, Christel Hülße, Martina Littmann, Judith O'Brien, Rüdiger von Kries, Carl Heinz Wirsing von König
Studies of the incidence of pertussis in adults have shown that it accounts for only 5-15% cases of prolonged coughing. We assessed the burden of suffering related to prolonged coughing and tried to identify further causative agents. Based on a sentinel study with 35 general practitioners in two German cities (Krefeld, Rostock), with 3,946 patients fulfilling the inclusion criteria, we estimated the incidence of prolonged coughing in adults. In 975 of these outpatients, PCR and/or serology for adenovirus, Bordetella pertussis and B...
January 4, 2018: European Journal of Clinical Microbiology & Infectious Diseases
https://www.readbyqxmd.com/read/29301655/intrathecal-antibody-responses-to-galc-in-guillain-barr%C3%A3-syndrome-triggered-by-mycoplasma-pneumoniae
#19
Patrick M Meyer Sauteur, Ruth Huizinga, Anne P Tio-Gillen, Judith Drenthen, Wendy W J Unger, Enno Jacobs, Annemarie M C van Rossum, Bart C Jacobs
Mycoplasma pneumoniae (Mp) triggers Guillain-Barré syndrome (GBS) and elicits anti-galactocerebroside (GalC) antibodies. Specifically anti-GalC IgG is associated with Mp-GBS, possibly because of its better ability to cross the blood-nerve barrier (BNB). We here investigated CSF for the presence of anti-GalC in GBS. Intrathecal anti-GalC was found in 46% of Mp-GBS patients (n=6/13), in contrast to 16% of GBS controls (n=4/25) and 0% of non-GBS controls (n=0/7). The antibodies most likely originated from increased BNB permeability and/or intrathecal synthesis...
January 15, 2018: Journal of Neuroimmunology
https://www.readbyqxmd.com/read/29299243/chronic-disease-in-the-mojave-desert-tortoise-host-physiology-and-recrudescence-obscure-patterns-of-pathogen-transmission
#20
Franziska C Sandmeier, K Nichole Maloney, C Richard Tracy, David Hyde, Hamid Mohammadpour, Ron Marlow, Sally DuPré, Kenneth Hunter
A seminatural, factorial-design experiment was used to quantify dynamics of the pathogen Mycoplasma agassizii and upper respiratory tract disease in the Mojave desert tortoise (Gopherus agassizii) over 2 years. Groups of initially healthy animals were separated into serologically positive (seropositive), seronegative, and artificially infected groups and paired into 23 pens. We found no evidence of long-term immune protection to M. agassizii or of immunological memory. Initially seronegative, healthy tortoises experienced an equal amount of disease when paired with other seronegative groups as when paired with seropositive and artificially infected groups-suggesting that recrudescence is as significant as transmission in introducing disease in individuals in this host-pathogen system...
December 2017: Ecology and Evolution
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