• Epstein Gomez opublikował 1 rok, 3 miesiące temu

    The TP53 tumor suppressor is the most frequently mutated gene in human cancer. p53 suppresses tumorigenesis by transcriptionally regulating a network of target genes that play roles in various cellular processes. Though originally characterized as a critical regulator for responses to acute DNA damage (activation of apoptosis and cell cycle arrest), recent studies have highlighted new pathways and transcriptional targets downstream of p53 regulating genomic integrity, metabolism, redox biology, stemness, and non-cell autonomous signaling in tumor suppression. Here, we summarize our current understanding of p53-mediated tumor suppression, situating recent findings from mouse models and unbiased screens in the context of previous studies and arguing for the importance of the pleiotropic effects of the p53 transcriptional network in inhibiting cancer.Thrombotic microangiopathy (TMA) is characterized by systemic microvascular thrombosis, target organ injury, anemia and thrombocytopenia. Thrombotic thrombocytopenic purpura, atypical hemolytic uremic syndrome and Shiga toxin E-coli-related hemolytic uremic syndrome are the three common forms of TMAs. Traditionally, TMA is encountered during pregnancy/postpartum period, malignant hypertension, systemic infections, malignancies, autoimmune disorders, etc. Recently, the patients presenting with trauma have been reported to suffer from TMA. TMA carries a high morbidity and mortality, and demands a prompt recognition and early intervention to limit the target organ injury. Because trauma surgeons are the first line of defense for patients presenting with trauma, the prompt recognition of TMA for these experts is critically important. Early treatment of post-traumatic TMA can help improve the patient outcomes, if the diagnosis is made early. The treatment of TMA is also different from acute blood loss anemia namely in that plasmapheresis is recommended rather than platelet transfusion. This article familiarizes trauma surgeons with TMA encountered in the context of trauma. Besides, it provides a simplified approach to establishing the diagnosis of TMA. Because trauma patients can require multiple transfusions, the development of disseminated intravascular coagulation must be considered. Therefore, the article also provides different features of disseminated intravascular coagulation and TMA. Finally, the article suggests practical points that can be readily applied to the management of these patients.The purpose of this work is to analyse the soundness of the Temporalis Muscle Flap as a safe and reliable flap to restore the aesthetic and functions of the facial mesostructure after its partial resection. Subjects were selected retrospectively and were invited to come to our outpatient clinic. Here, subjects completed a clinical evaluation in which the medical examiners evaluated the aesthetic outcome, the phonation, the ocular motility and the swallowing. Twenty-two subjects were enrolled in this study and completed the clinical evaluation. The mean value of the score obtained for the aesthetic outcome was 2.91 ± 0.92, slightly less than good. The VHI-30 questionnaire for voice evaluation obtained a mean score of 22.5 ± 11.5, pointing out minor voice problems. The mean value of the P-score evaluated during Fiberoptic Endoscopic Evaluation of Swallowing was 4.64 ± 0.95, highlighting the near absence of endoscopic signs of dysphagia. On the evaluation of ocular function, only one subject showed an inferior displacement of his right eyeball without vertical diplopia. The Temporalis Muscle Flap is a safe and reliable flap that can be used to reconstruct numerous surgical defects of the maxilla, giving an excellent recovery of physical aspect, phonation, and swallowing.This study examines the political role of German and Austrian maxillofacial surgeons in the Third Reich. It is based on archival sources, most of which have been evaluated for the first time – including the National Socialist Workers’ Party membership files in the Federal Archives in Berlin. The examinations yielded five key findings (1) A total of 187 specialist surgeons were identified; 116 (62%) of these were members of the Nazi Party (NSDAP). (2) More than half of the collective (54%) belonged to the educated or property-owning bourgeoisie due to their father’s profession; surgeons of bourgeois origin generally showed barely any less affinity to the NSDAP than those who came from the middle class. (3) Party members were able to further their careers during the Third Reich far more frequently than non-members. (4) The specialist surgeons were deeply divided regarding the question of the forced sterilization of patients with cleft lips and palates. (5) After 1945, the vast majority of NSDAP members did not suffer any career setbacks. It can be concluded that maxillofacial surgeons joined the NSDAP to a greater extent than the medical profession as a whole (ca. 45%). This was partly due to the fact that the Nazis emphasized the important role of maxillofacial surgeons in the care of injured soldiers and civilians. In addition, most maxillofacial surgeons were employed at university hospitals, where party membership was particularly career-enhancing.The objective of this study was to assess the resorption index of particulate calvarial grafts in maxillary sinuses of patients undergoing total reconstruction of an atrophic maxilla with residual alveolar bone that was less than, or equal to, 3mm thick. Twenty-one maxillary sinus floor elevations were carried out using particulate calvarial grafts in 11 individuals with totally edentulous maxillas. All patients had computed tomography (CT) before (T0), and 48hours (T1) and six months after surgery (T2). For each CT scan, linear measurements were taken of sections of the anterior, medial, and posterior regions of the maxillary sinus. There was a significant increase in the height of the maxillary sinus floor when T0 was compared with T1 (p=0.001). There was a statistically significant reduction in all maxillary sinus measurements when T1 was compared with T2; the mean height reduction being 2.36mm (16.87%) in the anterior region, 3.53mm (22.47%) in the medial region, and 2.21mm (22.78%) in the posterior region (p=0.001). Mean resorption was 20.7%. Autogenous calvarial bone used alone is an option for graft material in pneumatised maxillary sinuses and in cases where there is limited alveolar bone.Resorbable materials are used to fix bony fragments after sagittal split ramus osteotomy (SSRO), but to our knowledge, there is no clear regimen for antibiotic prophylaxis when such materials are used. The purpose of this study therefore was to compare inpatient single-agent and extended dual-agent antibiotic prophylaxis for the prevention of surgical site infections (SSI) in patients after SSRO. This prospective study included 100 patients who underwent SSRO for deformities of the jaw. Cephalometric analysis was performed preoperatively, and at one month and one year postoperatively. Patients were divided into two groups of 50 each. Group A was given cefazolin sodium 1g preoperatively and every eight hours for 48 hours postoperatively. Group B was given cefazolin sodium 1g preoperatively and every eight hours for 48 hours postoperatively, after which they were provided with oral amoxicillin for three days. Both groups were assessed for SSIs for one year postoperatively using the Clavien-Dindo classification. SSIs were documented in seven patients in Group A and six in Group B, with no significant difference between the groups. The two regimens had no significant association with SSI. In conclusion, our results suggest that the inpatient, single-agent, postoperative antibiotic regimen is sufficient to prevent SSI in patients who have SSRO with resorbable plate and screw fixation.Radiology trainees are served well by understanding the financial and operational aspects of the burgeoning phenomenon of private equity (PE) backed radiology and its implications on radiologist roles and remuneration. Consolidation in radiology has two major patterns, namely coalitions and PE-backed corporations, with distinct ownership, remuneration, and clinical decision-making dynamics. PE is defined by stock ownership, reduced base compensation, and greater conflicts of interest with respect to clinical decision-making given private investors’ arguably larger appetites for profit. Data on PE’s impact on radiology are scarce, but literature in other specialties suggests a potential for negative effects. Early career radiologist data point to growing concerns over this phenomenon’s growing presence in radiology. Radiology trainees are encouraged to become more financially literate with respect to PE, as this model has the potential to disrupt the practice of radiology and the competitiveness of future talent pools.

    In an era in which coronary heart disease is one of the leading causes of death worldwide, several studies report the persistence of obstacles to accessing revascularization, and percutaneous coronary intervention in particular, which may be associated with worse outcomes.

    To compare cardiovascular outcomes in patients admitted to hospitals with and without on-site percutaneous coronary intervention (PCI) capabilities.

    A retrospective study based on the National Registry of Acute Coronary Syndromes (ACS) – with data collection from 2010 to 2018. Division of the patients into two groups with and without ST-elevation. Two subgroups were subsequently created according to the presence/absence of on-site PCI. A propensity score was performed to standardize the results. Patients without information about hospital admission (with/without PCI) were excluded.

    6008 patients were included after exclusion criteria and propensity score were applied. We found that patients admitted for ACS with ST-elevation (STE-ACS) had more episodes of sustained ventricular tachycardia (OR 2.14; CI (1.26-3.61); p=0.004) in hospitals without on-site PCI. Regarding ACS without ST elevation (NSTE-ACS), there were more cases of congestive heart failure (OR 0.79; CI (0.65-0.98)) in hospitals with on-site PCI.

    The incidence of a greater number of major adverse events in hospitalizations without on-site PCI, particularly in the case of STE-ACS, is a consequence of the delay before revascularization. National and local strategies must be established to reduce the negative impact of the absence of on-site PCI and the resulting time before revascularization.

    The incidence of a greater number of major adverse events in hospitalizations without on-site PCI, particularly in the case of STE-ACS, is a consequence of the delay before revascularization. National and local strategies must be established to reduce the negative impact of the absence of on-site PCI and the resulting time before revascularization.Despite some scepticism, the suggestion by Hartung in 1976 that the report in the chronicle of Gervase of Canterbury corresponded to a meteorite impact with the moon in 1178, creating the Giordano Bruno crater, retains considerable support, particularly in popular scientific writing. Nevertheless, a series of studies of images of the crater from orbiting satellites, although confirming its young geological age, have indicated that it was not created within recorded human history. In this paper, we examine astronomical entries in Gervase’s chronicle relating to eclipses and conclude that, despite there being descriptions of miracles elsewhere in the manuscript, he himself was a reliable reporter of astronomical events. On this basis an alternative suggestion can be put forward for the splitting of the horns and writhing of the body of the new moon, reported to Gervase atmospheric turbulence. Although general atmospheric turbulence has been previously dismissed as too small an effect, it is possible to show that the description is consistent with viewing the new moon through a column of hot air from a fire, at a moderate distance and out of the line of sight of the observers.

Szperamy.pl
Logo
Enable registration in settings - general
Compare items
  • Total (0)
Compare
0