1
|
Gutiérrez Santana JC, Coria Jiménez VR. Burkholderia cepacia complex in cystic fibrosis: critical gaps in diagnosis and therapy. Ann Med 2024; 56:2307503. [PMID: 38261606 PMCID: PMC10810671 DOI: 10.1080/07853890.2024.2307503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Accepted: 01/15/2024] [Indexed: 01/25/2024] Open
Abstract
Burkholderia cepacia complex (Bcc) is a bacterial group with 'natural' multi-antimicrobial resistance. This complex has generated epidemic outbreaks across the world. In people with cystic fibrosis (CF), Bcc can cause severe lung infections that lead to accelerated lung damage, which can be complicated by necrotizing pneumonia accompanied by high fevers, leucocytosis, and bacteraemia, which commonly causes fatal outcomes. Specifically, infection by Burkholderia cenocepacia is considered an exclusion criterion for lung transplantation. The species of Bcc exhibit both genetic and phenotypic hypervariability that complicate their accurate microbiological identification. Automated methods such as MALDI-TOF can err in the determination of species. Their slow growth even in selective agars and the absence of international consensuses on the optimal conditions for their isolation make early diagnosis a difficult challenge to overcome. The absence of correlations between antibiograms and clinical results has resulted in the absence of standardized cut-off values of antimicrobial susceptibility, a fact that brings a latent risk since incorrect antibiotic therapy can induce the selection of more aggressive variants that worsen the clinical picture of the host, added to the absence of a clear therapeutic guide for the eradication of pulmonary infections by Bcc in patients with CF, resulting in frequently ineffective treatments. There is an urgent need to standardize methods and diagnostic tools that would allow an early and accurate diagnosis, as well as to perform clinical studies of the effectiveness of available antibiotics to eradicate Bcc infections, which would allow us to establish standardized therapeutic schemes for Bcc-infected patients.
Collapse
|
2
|
Segneanu AE, Vlase G, Chirigiu L, Herea DD, Pricop MA, Saracin PA, Tanasie ȘE. Romanian Wild-Growing Armoracia rusticana L.-Untargeted Low-Molecular Metabolomic Approach to a Potential Antitumoral Phyto-Carrier System Based on Kaolinite. Antioxidants (Basel) 2023; 12:1268. [PMID: 37371998 DOI: 10.3390/antiox12061268] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2023] [Accepted: 06/06/2023] [Indexed: 06/29/2023] Open
Abstract
Horseradish is a globally well-known and appreciated medicinal and aromatic plant. The health benefits of this plant have been appreciated in traditional European medicine since ancient times. Various studies have investigated the remarkable phytotherapeutic properties of horseradish and its aromatic profile. However, relatively few studies have been conducted on Romanian horseradish, and they mainly refer to the ethnomedicinal or dietary uses of the plant. This study reports the first complete low-molecular-weight metabolite profile of Romanian wild-grown horseradish. A total of ninety metabolites were identified in mass spectra (MS)-positive mode from nine secondary metabolite categories (glucosilates, fatty acids, isothiocyanates, amino acids, phenolic acids, flavonoids, terpenoids, coumarins, and miscellaneous). In addition, the biological activity of each class of phytoconstituents was discussed. Furthermore, the development of a simple target phyto-carrier system that collectively exploits the bioactive properties of horseradish and kaolinite is reported. An extensive characterization (FT-IR, XRD, DLS, SEM, EDS, and zeta potential) was performed to investigate the morpho-structural properties of this new phyto-carrier system. The antioxidant activity was evaluated using a combination of three in vitro, non-competitive methods (total phenolic assay, 2,2-Diphenyl-1-picrylhydrazyl (DPPH) radical-scavenging assay, and phosphomolybdate (total antioxidant capacity)). The antioxidant assessment indicated the stronger antioxidant properties of the new phyto-carrier system compared with its components (horseradish and kaolinite). The collective results are relevant to the theoretical development of novel antioxidant agent fields with potential applications on antitumoral therapeutic platforms.
Collapse
Affiliation(s)
- Adina-Elena Segneanu
- Institute for Advanced Environmental Research, West University of Timisoara (ICAM-WUT), Oituz nr. 4, 300086 Timisoara, Romania
| | - Gabriela Vlase
- Institute for Advanced Environmental Research, West University of Timisoara (ICAM-WUT), Oituz nr. 4, 300086 Timisoara, Romania
- Research Center for Thermal Analysis in in Environmental Problems, West University of Timisoara, Pestalozzi St. 16, 300115 Timisoara, Romania
| | - Liviu Chirigiu
- Faculty of Pharmacy, University of Medicine and Pharmacy Craiova, 2, Petru Rareș, 200349 Craiova, Romania
| | - Daniel Dumitru Herea
- National Institute of Research and Development for Technical Physics, 47 Mangeron Blvd, 700050 Iasi, Romania
| | - Maria-Alexandra Pricop
- OncoGen Centre, Clinical County Hospital "Pius Branzeu", Blvd. Liviu Rebreanu 156, 300723 Timisoara, Romania
| | - Patricia-Aida Saracin
- Faculty of Pharmacy, University of Medicine and Pharmacy Craiova, 2, Petru Rareș, 200349 Craiova, Romania
| | - Ștefania Eliza Tanasie
- Faculty of Pharmacy, University of Medicine and Pharmacy Craiova, 2, Petru Rareș, 200349 Craiova, Romania
| |
Collapse
|