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[Immunomodulatory properties of 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate and search for its new derivatives].

A strong immunomodulatory effect of 2-C-methyl-D-erythritol-2,4-cyclopyrophosphate (MEC) responsible for the survival of bacteria was shown on isolated macrophages and in experimental infections in mice (typhoid and tularemia). Derivatives of MEC were found by 1H-NMR spectroscopy under stress conditions in colorless mutants of the bacteria and isolated to be subsequently purified and used for modulation of the immune system of animals.

[Benign necrotizing osteitis of the external ear canal. A report of a clinical case].

Benign necrotizing osteitis of the external ear canal is a process of unknown origin. This necrotic process with sequestration of the tympanic bone occurs in healthy, non-diabetic patients. It should be differentiated from malignant otitis externa and radionecrosis of the tympanic bone. A case is reported and the literature on this rare clinical entity is discussed.

Clostridial infection following severe facial trauma.

Severe posttraumatic wound infections are uncommon occurrences in the craniofacial region. Although most reported cases have occurred following an odontogenic infection or minor soft-tissue trauma, the potential for the development of this type of infection exists following complex facial fractures. We report a case with clostridial infection in the temporalis fascia complicating a complex facial fracture. The implications regarding antibiotic usage and delay of surgical treatment are discussed.

Clinical features of the yellow nail syndrome.

The yellow nail syndrome is a rare cause of exudative pleural effusions. Diagnosis is based on the presence of typical clinical features, striking nail changes, lymphedema, and pleural effusions of undetermined etiology. There is no direct relationship between the syndrome and primary immunologic disorders, malignancies, endocrine abnormalities, or connective tissue diseases. In patients with symptomatic pleural effusions, pleurodesis is beneficial but no treatment for the nail changes has been devised.

In-vitro activity of lomefloxacin in comparison with pefloxacin and ofloxacin.

The in-vitro activity of lomefloxacin (SC 47111, NY-198) was investigated by the determination of MICs in agar and in broth, of MBCs in broth, of killing curves and of the duration of the post-antibiotic effect. MICs measured in broth and in agar were almost identical. Lomefloxacin was two- to eight-fold less active against Gram-positive bacteria than ofloxacin. Its activity against Staphylococcus aureus was independent of resistance to penicillin and oxacillin. The activity of lomefloxacin, ofloxacin and pefloxacin was poor against JK corynebacteria. Enterobacteriaceae, Aeromonas spp., Haemop

[Circulation of the causative agent of diphtheria in immune collectives].

Prolonged observations on the spread of toxigenic C. diphtheriae carriership, made during a school year in 12 groups of immune children (3809 children), showed that the penetration of diphtherial infection could give rise to the outbreak of bacterial carriership, its level being as high as 20.9-35.1% of the total number of children in the group. The spread of bacterial carriership occurred during the first months after the penetration of the infection, achieving its peak, then followed the subsidence of the infection in the focus. Though some children in the group persistently released C. diph

Correlation between nasal microbiome composition and remote purulent skin and soft tissue infections.

The incidence of skin and soft tissue infections (SSTIs) has increased dramatically over the past decade, resulting in significant morbidity … an in participants with abscesses. Additionally, we noted a significant inverse correlation between Corynebacterium spp. and S. aureus (P = 0.0001). The sensitivity of standard microbiological culture for abscesses was 71.4%. These data expand our knowledge of the complexity of the nasal and abscess microbiomes and potentially pave the way for novel therapeutic a …

Diversity and composition of ocular microbiota in contact lens wearers: Efficacy of liposomal ozonated oil.

PURPOSE: To characterize the ocular surface microbiota in regular contact lens wearers with dry eyes and assess the effectiveness of reducin … in R. RESULTS: Both groups predominantly harbored Staphylococcus caprae, Streptococcus oralis, and Corynebacterium spp., with OSSO and HPMC users showing distinct bacterial profiles. Alpha diversity showed no significant differences, but beta diversity revealed differences in bacterial composition between the groups. CONCLUSIONS: The results seem to indicate th …

Exploring Biomass Precursor Synthesis as a Determinant in Microbial Adaptation to Unadapted Carbon Sources with AdaptUC.

Industrial microorganisms often struggle to utilize renewable substrates such as methanol, formate, and xylose. Here, we introduce AdaptUC, … to higher driving forces for evolution of the starting strain. Case studies in Escherichia coli and Corynebacterium glutamicum, validated against experimental records and literature, confirm AdaptUC's ability to identify knockout combinations that fine-tune precursor dependency and accelerate adaptation. By leveraging genome-scale metabolic models, AdaptUC naviga …

Delayed-onset pseudophakic endophthalmitis.

We reviewed 19 cases of delayed-onset pseudophakic endophthalmitis in which diagnostic cultures were performed at one month or more after cataract extraction with posterior chamber intraocular lens implantation. We isolated four different organisms in these 19 cases: 12 Propionibacterium species (63%), three Candida parapsilosis (16%), three Staphylococcus epidermidis (16%), and one Corynebacterium species (5%). Because of the unusual delayed-onset features of these cases and the retrospective nature of this study, a variety of treatment regimens were used. Twelve patients had recurrence of ma…

Recent progress in microbial succinic acid production: integrating genome engineering and fermentation strategies.

Succinic acid is a four-carbon dicarboxylic acid and important platform chemical with diverse applications in food and feed, pharmaceutical, … gineering of both native producers, Actinobacillus succinogenes, Mannheimia succiniciproducens, and Corynebacterium glutamicum and non-native production hosts, such as Escherichia coli, Klebsiella oxytoca, and several yeast species, leading to marked improvements in succinate concentration, yield, and productivity. Emerging approaches, including adaptive-laborato …

A two-factor authentication mechanism licenses pilins for pilus assembly in gram-positive bacteria.

Gram-positive bacteria display virulence-associated pili that facilitate adhesion and biofilm formation. These pili are covalently polymerized by class C sortase enzymes, which selectively recognize their cognate pilin substrates amid numerous cell wall sorting signal (CWSS)-bearing proteins. The molecular basis for this stringent substrate specificity has remained unclear. Here, we develop a rapid, quantitative fluorescence-activated cell sorting assay to monitor pilus assembly in Corynebacterium diphtheriae, enabling high-throughput analysis of SpaA pilin and SrtA sortase variants. Using thi…

Патогенная адаптация HLA Alleles и его корреляция с аутоиммунными заболеваниями на китайском языке.

Гены антигена лейкоцита человека (HLA) играют решающую роль в адаптации населения к динамичной патогенной среде. Несмотря на их важное значение, изучение патогенной эволюции ВПП и ее последствий для аутоиммунных заболеваний сопряжено с серьезными проблемами. Вот, мы генотипировали 20 Гены HLA 3-field разрешение 8278 лиц, принадлежащих к различным этническим группам, включая 4013 Не связанные с Ханом китайские личности. Мы сосредоточили внимание на адаптации ХЛА среди населения Китая, анализируя их связь с различными патогенами, и изучили потенциальную корреляцию между патогенной адаптацией и а

Совпадение в аннотации оригинала
Human leukocyte antigen (HLA) genes play a crucial role in the adaptation of human populations to the dynamic pathogenic environment. Despit … RB1*07:01 and HLA-DQB1*06:01 confer strong pathogen adaptability at the sequence level, notably for Corynebacterium diphtheriae and Bordetella pertussis. Additionally, alleles like HLA-C*03:02 demonstrate adaptive selection against pathogens like Mycobacterium tuberculosis and coronavirus at the gene expression level. Simultaneously, the aforementioned HLA allele …

Sterility of antibiotic-admixed peritoneal dialysis solution over time.

BACKGROUND: Intraperitoneal antibiotics may be required daily for up to three weeks to treat peritoneal dialysis (PD)-related peritonitis. I … 0-, 24-, 48- and 72-h intervals. RESULTS: One sterile water admixed bag sampled at 24 h yielded a Corynebacterium spp. after microbiologic culture. A repeat specimen from the same bag at day nine returned a negative culture result. All other sterile water and cefazolin admixed bags returned negative culture results at all time points. CONCLUSIONS: Antibiotic-a …

Pituitary abscess in an adolescent girl: a case report and review of the literature.

We report the case of a 15-year-old girl who presented with a history of recurrent bitemporal headaches for the last 2 months. In the prior few days, she complained of neck pain, emesis, phonophobia and photophobia, but no fever. Additional symptoms included polydipsia, polyuria and weight gain in the last year. Magnetic resonance imaging (MRI) of the brain demonstrated a cystic sellar and suprasellar mass with peripheral enhancement. Cerebrospinal fluid studies showed pleocytosis. Serum hormone levels were consistent with panhypopituitarism. Transnasal sphenoidotomy was performed, and 2 mL of

[Mycolic acids--potential biomarkers of opportunistic infections caused by bacteria of the suborder Corynebacterineae].

Mycolic acids are one of the basic elements of the cell wall structure of bacteria belonging to the suborder Corynebacterineae, constituting from 20% to 40% of dry weight. Additionally, they show high structural diversity within each family and species. Nowadays, profiles of mycolic acids are widely described for the genus Mycobacterium, the causative agent of tuberculosis. However, the suborder Corynebacterineae also includes many representatives of opportunistic human pathogens, e.g. Dietzia, Gordonia, Nocardia and Rhodococcus. Currently, an increased infection risk caused by this group of m