Global reprogramming of bacterial gene expression in response to nutritional stress, the stringent response, is well studied in E. coli. Now Stallings et al. report that Mycobacterium tuberculosis employs a different strategy involving the general transcription factor CarD for growth control and persistence in response to stresses encountered during infection.
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http://dx.doi.org/10.1016/j.chom.2009.07.001 | DOI Listing |
PeerJ Comput Sci
October 2024
Beijing Wuzi University, Beijing, China.
Online financial transactions bring convenience to people's lives, but also present vulnerabilities for criminals to embezzle users' accounts and trick users into credit card fraud. Although machine learning methods have been adopted to detect anomalous transactions, it's hard for a single machine learning method to achieve satisfying results with the increasing scale and dimensionality of financial datasets. In addition, for anomaly detection of financial data, there is an obvious imbalance between normal records and abnormal.
View Article and Find Full Text PDFJ Innov Card Rhythm Manag
August 2024
Adult Congenital Heart Disease Center, Memorial Cardiac and Vascular Institute, Joe DiMaggio Children's Hospital, Hollywood, FL, USA.
Current leadless pacemaker (LP) systems, which have been developed and used in patients with normal cardiac anatomy, are rare and technically even more challenging to implant in patients with congenital heart diseases, especially with univentricular physiology and Fontan palliation. We report two cases of percutaneous LP implantation in an adult and a child, respectively, highlighting the unconventional approaches, different challenges, and use of multimodality imaging in patients who underwent a Fontan operation.
View Article and Find Full Text PDFPort J Card Thorac Vasc Surg
July 2024
Department of Cardiothoracic Surgery, Santa Cruz Hospital, Lisbon, Portugal.
The saphenous vein graft (SVG) remains the most used conduit as a second graft in Coronary Artery Bypass Grafting (CABG).1 Traditionally, surgeons harvest SVG with an open approach, making a long incision along the medial part of the leg or thigh. This procedure can potentially result in important complications, such as delayed wound healing, postoperative pain and infection.
View Article and Find Full Text PDFActa Neurochir Suppl
December 2023
Fondazione Policlinico Gemelli IRCCS, Catholic University of the Sacred Heart, Rome, Italy.
Posterior atlantoaxial screw fixation is a widely adopted therapeutic option for C1-C2 instability secondary to fractures or dislocation, degenerative diseases, or tumors at this level. Anterior transarticular screw fixation (ATSF) is an effective alternative to the posterior approaches, presenting several advantages despite being scarcely known and rarely chosen.In this chapter, we describe the ATSF step by step, illustrating its variations reported in literature, and we critically analyze the several advantages and contraindications of this technique.
View Article and Find Full Text PDFJ Card Surg
December 2022
Department of Cardiovascular Diseases, Gemelli Molise, Campobasso, Italy.
Mitral valve regurgitation (MR) is a common valvular disorder occurring in up to 10% of the general population. Mitral valve reconstructive strategies may address any of the components, annulus, leaflets, and chords, involved in the valvular competence. The classical repair technique involves the resection of the prolapsing tissue.
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