Publications by authors named "Dan Grigorescu"

The worldwide prevalence of allergic disease is rising as a result of complex gene-environment interactions that shape the immune system and host response. Climate change and loss of biodiversity are existential threats to humans, animals, plants, and ecosystems. While there is significant progress in the development of targeted therapeutic options to treat allergies and asthma, these approaches are inadequate to meet the challenges faced by climate change.

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Modern humans have populated Europe for more than 45,000 years. Our knowledge of the genetic relatedness and structure of ancient hunter-gatherers is however limited, owing to the scarceness and poor molecular preservation of human remains from that period. Here we analyse 356 ancient hunter-gatherer genomes, including new genomic data for 116 individuals from 14 countries in western and central Eurasia, spanning between 35,000 and 5,000 years ago.

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The coronavirus disease 2019 (COVID-19) pandemic is probably the most critical epidemiological situation that human civilization has faced in the last few decades. In this context, of all the professional categories involved in the management of patients with COVID-19 are the most likely to develop burnout syndrome. The main objective of this study is to analyze specific predictive factors of the occurrence and development of the burnout syndrome in the healthcare workers involved in the diagnosis and treatment of patients with COVID-19.

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Article Synopsis
  • Multidrug-resistant organisms, particularly carbapenem-resistant Enterobacteriaceae, are a growing concern for ICU patients with decompensated cirrhosis.
  • A study found that 46% of bacteria found at admission and 60% during ICU stay were multiresistant, with a notable increase in carbapenem-resistant strains over time.
  • The length of ICU stay and previous carbapenem antibiotic usage were significant risk factors for acquiring second infections in these patients, highlighting the urgent need for monitoring and better treatment strategies.
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Background: Currently considered an occupational disease, the burnout syndrome affects 13-27% of the active population in multiple occupational sectors of the modern world.

Objectives: Considering the burnout syndrome from the new perspective of the predictive, preventive, personalized medicine concept as a pathological entity with a predictable appearance and evolution which allows a preventive approach and a personalized therapy, the main objective of the study is to highlight the possibility of psychotherapeutic interventions for producing measurable psychological changes in order to decrease the burnout level of hospital nurses.

Method: The research design is experimental, the independent variable being the participation or non-participation of nurses in psychotherapeutic sessions where specific classical psychodrama techniques are originally used.

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The Cioclovina (Romania) calvaria, dated to ca. 33 cal ka BP and thought to be associated with the Aurignacian lithic industry, is one of the few relatively well preserved representatives of the earliest modern Europeans. Two large fractures on this specimen have been described as taphonomic modifications.

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Aim: To evaluate the shaping ability of the XP-endo shaper file system in maxillary molars, representing root canals with variation in morphology.

Materials And Methods: Twenty maxillary molars were instrumented according to recommended protocols. Pre- and postoperative microcomputed tomography (CT) scans were performed and the root canals classified according to canal type and curvature.

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Modern humans arrived in Europe ~45,000 years ago, but little is known about their genetic composition before the start of farming ~8,500 years ago. Here we analyse genome-wide data from 51 Eurasians from ~45,000-7,000 years ago. Over this time, the proportion of Neanderthal DNA decreased from 3-6% to around 2%, consistent with natural selection against Neanderthal variants in modern humans.

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How modern humans dispersed into Eurasia and Australasia, including the number of separate expansions and their timings, is highly debated [1, 2]. Two categories of models are proposed for the dispersal of non-Africans: (1) single dispersal, i.e.

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Objectives: The morphology of the human bony labyrinth is thought to preserve a strong phylogenetic signal and to be minimally, if at all, affected by postnatal processes. The form of the semicircular canals is considered a derived feature of Neanderthals and different from the modern human anatomy. Among other hominins, European Middle Pleistocene humans have been found to be most similar to Neanderthals.

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Background: Lower limb ulcers are a major source of morbidity and mortality in diabetic patients. Surgical coverage of these wounds is fraught with a high complication rate. Although clinically perforator flaps lead to good results in diabetic patients, there is little experimental data to support this finding.

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Endocasts provide evidence on size and shape characteristics, blood supply trajectories, and neurological features of the brain, allowing comparative analyses of fossil hominins crucial to our understanding of human brain evolution. Here, we assess the morphological features of the virtual endocast of the Cioclovina Upper Paleolithic calvarium, one of the earliest reliably dated European modern human fossils. Our study was conducted on a computed tomography (CT) scan of the original specimen.

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From 2004 to 2005, 60%-72% of invasive Staphylococcus aureus isolates from Romanian hospitals were resistant to methicillin (methicillin-resistant S. aureus [MRSA]), the highest frequency for any European nation. Few reports, however, have addressed the molecular characteristics of S.

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The current modern human origins debate centers on the possibility and degree of admixture between indigenous archaic humans and modern human populations migrating out of Africa into Europe and Asia in the Late Pleistocene. Evidence for such admixture must be sought in the earliest fossil record of modern humans outside Africa, as it is those populations that would have encountered, and possibly interbred with, archaic hominins. In the case of Europe, the recent application of direct dating techniques has eliminated several specimens from the Upper Paleolithic fossil record, while confirming early ages for others.

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