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Reticular hyperpigmentation
Published in Dimitris Rigopoulos, Alexander C. Katoulis, Hyperpigmentation, 2017
Alexander C. Katoulis, Efthymia Soura
The exact pathogenesis of CARP has not yet been elucidated. Some authors suggest that CARP may be a disorder of keratinization, a theory supported by the fact that many patients respond to treatment with oral and/or topical retinoids.103,104 Another theory suggests that CARP could be caused by endocrine imbalance. This theory is supported by the fact that many patients are overweight or present with menstrual irregularities, diabetes mellitus, or pituitary or thyroid disorders. In addition, CARP exhibits a clinical resemblance to another disorder associated with endocrine imbalance: acanthosis nigricans.103 Finally, other theories suggest that CARP may be associated with an abnormal host response to the Malassezia furfur yeast, a bacterial infection (Dietzia strain of Actinomyces),105 or UV radiation, or that it is a variant of cutaneous amyloidosis.103
An update on the routine application of MALDI-TOF MS in clinical microbiology
Published in Expert Review of Proteomics, 2019
Martin Welker, Alex Van Belkum, Victoria Girard, Jean-Philippe Charrier, David Pincus
It appears that a frequent cause of rare opportunistic species causing infections in immunocompetent individuals is through traumatic entry: Navaratnam et al. [37] described a case of endophthalmitis following a minor but traumatic eye injury caused by a Dietzia sp. At the time, the isolate could not be identified to the species level by MALDI-TOF MS as two of three closely related species (100% 16S rDNA identity) were not included in the database.Lotte et al. [38] described the first case of chronic osteitis caused by Clostridium indolis in a 37-year-old female, who had suffered an open bone fracture after a motorcycle accident, which was apparently contaminated with this soil inhabitant that was able to colonize an otherwise immunocompetent individual.Another unusual clinical isolate, Paenibacillus turicensis, was implicated in a similar infection triggered by a motorbike accident with an open bone fracture in a 65-year-old man [39].Mycobacterium chimaera was recently found as causing infections in patients following open-heart surgery [40]. Identification of these species by MALDI-TOF MS was possible, however, it required algorithms beyond standard identification [41].
Drip irrigation biofouling with treated wastewater: bacterial selection revealed by high-throughput sequencing
Published in Biofouling, 2019
Kévin Lequette, Nassim Ait-Mouheb, Nathalie Wéry
Dripper–pipe group separation was significantly dominated by Aquabacterium (OTU1). Dripper–TWW group separation was mainly driven by Terrimonas (OTU2), the OTU10 affiliated to the order Burkholderiales (MWH-UniP1 aquatic group) and the OTU13 affiliated to the class Actinobacteria (PeM15_ge) with a cumulative contribution of 11%. Cyanobacteria such as Synechococcus (OUT24) also contributed to the dripper–TWW divergence (Supplemental material Table S4). Pipe–TWW group separation was mainly driven by a member of the order Burkholderiales (MWH-UniP1 aquatic group, OTU10), the genus Aeromicrobium (OTU16) and the genus Brevundimonas (OTU20) with a cumulative contribution of 9%. Others such as Thiobacillus (OTU14), Chryseobacterium (OTU22), PeM15_ge (OTU13), Gordonia (OTU19) and Dietzia (OTU32) (Table 4, Supplemental material Table S3) also significantly contributed to the Pipe–TWW divergence.
Bacteria Associated with Granulomatous Lobular Mastitis and the Potential for Personalized Therapy
Published in Journal of Investigative Surgery, 2022
Xin-Qian Li, Hong-Li Wu, Jing-Ping Yuan, Tian-gang Liu, Sheng-Rong Sun, Chuang Chen
Other bacteria associated with GLM have been reported. For example, Wang et al. [9] identified the five most abundant pathogenic genera in GLM as Pseudomonas, Brevundimonas, Stenotrophomonas, Acinetobacter and Aspergillus. Actinomyces has also been identified in GLM [41]. Fujii et al. [29] detected common sequences of Nocardia, Mycobacterium, Rhodococcus equi, Gordonia and Dietzia in two cases. In addition, mixed strains of Corynebacterium, Propionibacterium acnes, group B Streptococcus, and Candida were isolated in four cases [30].