scholarly journals Outbreaks of Hemotrophic Mycoplasma Infections in China

2009 ◽  
Vol 15 (7) ◽  
pp. 1139-1140 ◽  
Author(s):  
Zhe Hu ◽  
Jigang Yin ◽  
Kefei Shen ◽  
Wei Kang ◽  
Qijun Chen
2013 ◽  
Vol 44 (1) ◽  
pp. 6 ◽  
Author(s):  
Albina Sokoli ◽  
Katrin Groebel ◽  
Katharina Hoelzle ◽  
Werner M Amselgruber ◽  
José M Mateos ◽  
...  

2012 ◽  
Vol 194 (6) ◽  
pp. 1505-1514 ◽  
Author(s):  
K. M. Felder ◽  
P. M. Carranza ◽  
P. M. Gehrig ◽  
B. Roschitzki ◽  
S. Barkow-Oesterreicher ◽  
...  

2020 ◽  
Vol 8 (10) ◽  
pp. 1493
Author(s):  
Amir Salvador Alabí ◽  
Gustavo Monti ◽  
Carola Otth ◽  
Paulina Sepulveda-García ◽  
Melissa Sánchez-Hidalgo ◽  
...  

Even though hemotrophic mycoplasma (hemoplasma) infections are well documented in a wide variety of hosts worldwide, there is a gap in the knowledge aobut hemoplasmas in rodents. This study aimed to molecularly survey and investigate the genetic diversity of hemoplasmas in rodents from Chile. Synanthropic and wild rodents (n = 74) were captured in the southern province of Valdivia (Corral, Valdivia, Riñihue, and Reumén localities). Spleen samples were submitted to a conventional PCR for hemotrophic Mycoplasma spp. targeting the 16S rRNA gene (800 bp), followed by sequencing, phylogenetic, and genetic diversity analyses. The overall occurrence of hemotrophic mycoplasmas in rodents from Valdivia was 24.5% (18/74) [95% CI (14.5; 34.1)]. Hemoplasmas were detected in Mus musculus (1/4), Rattus norvegicus (1/16), Abrothrix longipilis (7/13), A. olivaceo (6/8), and Oligoryzomys longicaudatus (3/10). The nucleotide polymorphism analysis of the targeted 16S rRNA region showed low diversity, with two genotypes and a high identity to the variants detected in wild rodents from Brazil. Hemoplasmas are described for the first time in rodents from Chile with a moderate occurrence and low 16S rDNA genetic diversity within the sampled rodent population. The detected hemoplasma genotypes were specific to rodents and were not shared with other mammals.


2011 ◽  
Vol 149 (1-2) ◽  
pp. 262-268 ◽  
Author(s):  
Dmitriy V. Volokhov ◽  
Tenaya Norris ◽  
Carlos Rios ◽  
Maureen K. Davidson ◽  
Joanne B. Messick ◽  
...  

2011 ◽  
Vol 193 (9) ◽  
pp. 2369-2370 ◽  
Author(s):  
J. Oehlerking ◽  
M. Kube ◽  
K. M. Felder ◽  
D. Matter ◽  
M. M. Wittenbrink ◽  
...  

2008 ◽  
Vol 77 (2) ◽  
pp. 576-584 ◽  
Author(s):  
K. Groebel ◽  
K. Hoelzle ◽  
M. M. Wittenbrink ◽  
U. Ziegler ◽  
L. E. Hoelzle

ABSTRACT Mycoplasma suis belongs to the hemotrophic mycoplasma group and causes infectious anemia in pigs. According to the present state of knowledge, this organism adheres to the surface of erythrocytes but does not invade them. We found a novel M. suis isolate that caused severe anemia in pigs with a fatal disease course. Interestingly, only marginal numbers of the bacteria were visible on and between the erythrocytes in acridine orange-stained blood smears for acutely diseased pigs, whereas very high loads of M. suis were detected in the same blood samples by quantitative PCR. These findings indicated that M. suis is capable of invading erythrocytes. By use of fluorescent labeling of M. suis and examination by confocal laser scanning microscopy, as well as scanning and transmission electron microscopy, we proved that the localization of M. suis was intracellular. This organism invades erythrocytes in an endocytosis-like process and is initially surrounded by two membranes, and it was also found floating freely in the cytoplasm. In conclusion, we were able to prove for the first time that a member of the hemotrophic mycoplasma group is able to invade the erythrocytes of its host. Such colonization should protect the bacterial cells from the host's immune response and hamper antibiotic treatment. In addition, an intracellular life cycle may explain the chronic nature of hemotrophic mycoplasma infections and should serve as the foundation for novel strategies in hemotrophic mycoplasma research (e.g., treatment or prophylaxis).


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