121 results on '"Mauro Vaccarezza"'
Search Results
2. The Facial Approximation of the Skull Attributed to Jan Žižka (ca. AD 1360–1424)
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Cicero Moraes, Johari Yap Abdullah, Jiri Šindelář, Matěj Šindelář, Zuzana Thomová, Jakub Smrčka, Mauro Vaccarezza, Thiago Beaini, and Francesco Maria Galassi
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anatomy ,anthropology ,artificial intelligence ,digital ,facial approximation ,Jan Žižka ,Archaeology ,CC1-960 - Abstract
The present study aims to approximate the face from the alleged skull of Jan Žižka (ca. AD 1360–1424), a military commander and national hero in the Czech Republic. Found in 1910, the skull has only a fraction of its original structure, which required an initial effort to reconstruct the missing regions from data collected in CT scans of living people’s heads. The forensic facial approximation consisted of projecting the skin boundaries with soft tissue markers and cross-referencing data from statistical projections from CT scans of living people and the use of the anatomical deformation technique, where the digital head of a virtual donor was adjusted until it matched the alleged skull of the Czech general. The final face was the result of the cross-referencing of all data and the completion of the structure respected the iconography attributed to Jan Žižka.
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- 2024
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3. Emerging Mechanisms of Physical Exercise Benefits in Adjuvant and Neoadjuvant Cancer Immunotherapy
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Fabio Casciano, Lorenzo Caruso, Enrico Zauli, Arianna Gonelli, Giorgio Zauli, and Mauro Vaccarezza
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immune response ,immunotherapy ,lifestyle ,oncology ,physical exercise ,tumor microenvironment ,Biology (General) ,QH301-705.5 - Abstract
The primary factors that can be modified in one’s lifestyle are the most influential determinants and significant preventable causes of various types of cancer. Exercise has demonstrated numerous advantages in preventing cancer and aiding in its treatment. However, the precise mechanisms behind these effects are still not fully understood. To contribute to our comprehension of exercise’s impact on cancer immunotherapy and provide recommendations for future research in exercise oncology, we will examine the roles and underlying mechanisms of exercise on immune cells. In addition to reducing the likelihood of developing cancer, exercise can also improve the effectiveness of certain approved anticancer treatments, such as targeted therapy, immunotherapy, and radiotherapy. Exercise is a pivotal modulator of the immune response, and thus, it can play an emerging important role in new immunotherapies. The mechanisms responsible for these effects involve the regulation of intra-tumoral angiogenesis, myokines, adipokines, their associated pathways, cancer metabolism, and anticancer immunity. Our review assesses the potential of physical exercise as an adjuvant/neoadjuvant tool, reducing the burden of cancer relapse, and analyzes emerging molecular mechanisms predicting favorable adjuvanticity effects.
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- 2024
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4. Human cerebral blood supply via circulus arteriosus cerebri: A scoping review on its variations and clinical implications
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Adilah F. Ahmad, Francesco M. Galassi, Arjun Burlakoti, Mauro Vaccarezza, and Veronica Papa
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Circle of willis ,Cerebral artery ,Angiography ,Aneurysm ,Stroke ,Anatomical variation ,Science (General) ,Q1-390 ,Social sciences (General) ,H1-99 - Abstract
Background: Circulus arteriosus cerebri (CAC), responsible for supplying blood to the brain, presents anatomical variations that have been associated with both haemorrhagic and ischemic strokes. Therefore, it is crucial to conduct comprehensive investigations and comparisons of the diverse variant components of the CAC, published in various journals, and analyze them to identify individuals at risk of cerebrovascular pathologies, thereby ensuring enhanced and timely treatment. Methods: A scoping review according to the five-stage protocol by Arksey and O'Malley was performed between February and June 2023. Seven hundred and seventy-seven records were initially identified, and a total of 51 studies were finally included. Results: This scoping review focuses on the anatomical variations of the CAC and their clinical implications on cerebrovascular disease and includes more original articles than review s. Consistent with previous findings, most of the records included small populations or samples, while only three records reported larger populations. Surprisingly, the populations enclosed in the included records consisted of autopsied cadaveric specimens more than living subjects. Finally, the qualitative analysis highlighted three main themes concerning the relationship between the normal CAC morphology and the cerebrovascular disease onset as well as the variant CAC morphology and its main features that might be also involved in these diseases. Finally, techniques that can be used to measure CAC have also been assessed. Conclusion: Variations in the CAC, more common in the posterior part, with genetic and environmental factors influencing these variations impact cerebrovascular disorders. Understanding variants components of CAC can aid in improving brain surgeries and post-stroke care.
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- 2024
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5. circRNAs as Epigenetic Regulators of Integrity in Blood–Brain Barrier Architecture: Mechanisms and Therapeutic Strategies in Multiple Sclerosis
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Elisabetta D’Aversa, Francesca Salvatori, Mauro Vaccarezza, Bianca Antonica, Miriana Grisafi, Ajay Vikram Singh, Paola Secchiero, Giorgio Zauli, Veronica Tisato, and Donato Gemmati
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multiple sclerosis ,blood–brain barrier ,cytoskeleton proteins ,circularRNAs ,Cytology ,QH573-671 - Abstract
Multiple sclerosis (MS) is a chronic inflammatory neurodegenerative disease leading to progressive demyelination and neuronal loss, with extensive neurological symptoms. As one of the most widespread neurodegenerative disorders, with an age onset of about 30 years, it turns out to be a socio-health and economic issue, thus necessitating therapeutic interventions currently unavailable. Loss of integrity in the blood–brain barrier (BBB) is one of the distinct MS hallmarks. Brain homeostasis is ensured by an endothelial cell-based monolayer at the interface between the central nervous system (CNS) and systemic bloodstream, acting as a selective barrier. MS results in enhanced barrier permeability, mainly due to the breakdown of tight (TJs) and adherens junctions (AJs) between endothelial cells. Specifically, proinflammatory mediator release causes failure in cytoplasmic exposure of junctions, resulting in compromised BBB integrity that enables blood cells to cross the barrier, establishing iron deposition and neuronal impairment. Cells with a compromised cytoskeletal protein network, fiber reorganization, and discontinuous junction structure can occur, resulting in BBB dysfunction. Recent investigations on spatial transcriptomics have proven circularRNAs (circRNAs) to be powerful multi-functional molecules able to epigenetically regulate transcription and structurally support proteins. In the present review, we provide an overview of the recent role ascribed to circRNAs in maintaining BBB integrity/permeability via cytoskeletal stability. Increased knowledge of the mechanisms responsible for impairment and circRNA’s role in driving BBB damage and dysfunction might be helpful for the recognition of novel therapeutic targets to overcome BBB damage and unrestrained neurodegeneration.
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- 2024
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6. Using optical coherence tomography and optical coherence tomography angiography to delineate neurovascular homeostasis in migraine: a review
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Devahuti R. Chaliha, Mauro Vaccarezza, Jason Charng, Fred K. Chen, Amy Lim, Peter Drummond, Ryusuke Takechi, Virginie Lam, Satvinder S. Dhaliwal, and John C. L. Mamo
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optical coherence tomography ,optical coherence tomography angiography (OCTA) ,migraine ,retina ,choroid ,vasculature ,Neurosciences. Biological psychiatry. Neuropsychiatry ,RC321-571 - Abstract
Migraine is one of the world’s most debilitating disorders, and it has recently been shown that changes in the retina can be a potential biomarker for the disease. These changes can be detected by optical coherence tomography (OCT), which measures retinal thickness, and optical coherence tomography angiography (OCTA), which measures vessel density. We searched the databases Google Scholar, ProQuest, Scopus, and Web of Science for studies in English using OCT and OCTA in migraineurs, using the search terms “optical coherence tomography,” “OCT,” “optical coherence tomography angiography,” “OCTA” and “migraine.” We found 73 primary studies, 11 reviews, and 8 meta-analyses pertaining to OCT and OCTA findings in migraineurs. They showed that migraineurs had reduced retinal thickness (via OCT), retinal vessel density, and greater foveal avascular zone area (via OCTA) than controls. OCTA changes reflect a perfusion compromise occurring in migraineurs as opposed to in healthy controls. OCT and OCTA deficits were worse in migraine-with-aura and chronic migraine than in migraine-without-aura and episodic migraine. Certain areas of the eye, such as the fovea, may be more vulnerable to these perfusion changes than other parts. Direct comparison between study findings is difficult because of the heterogeneity between the studies in terms of both methodology and analysis. Moreover, as almost all case–control studies were cross-sectional, more longitudinal cohort studies are needed to determine cause and effect between migraine pathophysiology and OCT/OCTA findings. Current evidence suggests both OCT and OCTA may serve as retinal markers for migraineurs, and further research in this field will hopefully enable us to better understand the vascular changes associated with migraine, perhaps also providing a new diagnostic and therapeutic biomarker.
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- 2024
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7. L-arginine and aged garlic extract for the prevention of migraine: a study protocol for a randomised, double-blind, placebo-controlled, phase-II trial (LARGE trial)
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Devahuti R. Chaliha, Mauro Vaccarezza, Emily Corti, Ryusuke Takechi, Satvinder S. Dhaliwal, Peter Drummond, Eric Visser, Fred K. Chen, Jason Charng, Virginie Lam, and John C.L. Mamo
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Aged garlic extract ,L-arginine ,Chronic frequent episodic migraine ,Photosensitivity ,Randomised controlled trial ,Retinal imaging ,Neurology. Diseases of the nervous system ,RC346-429 - Abstract
Abstract Background Migraine is a common and distressing neurological condition characterised by recurrent throbbing headaches, nausea and heightened sensitivity to light and sound. Accumulating evidence suggests that cerebral arteries dilate during migraine, causing distal microvessels to constrict, which could activate nociceptors and cause onset of headache pain. If so, preventing or attenuating chronic microvascular constriction, and promoting a dilatory phenotype, may reduce frequency and/or severity of migraines. The primary aim of the L-Arginine and Aged Garlic Extract (LARGE) trial is to investigate whether oral treatment with dietary nutraceuticals, L-arginine and aged garlic extract (AGE), both systemic vasodilatory agents, will alleviate migraine frequency, duration and severity in adults with chronic frequent episodic migraines. Methods The study is a randomised double-blind placebo-controlled phase-II single-site clinical trial conducted in Perth, Australia. The target sample is to recruit 240 participants diagnosed with chronic frequent episodic migraines between 18 and 80 years of age. Participants will be randomised to one of four treatment groups for 14 weeks (placebo induction for 2 weeks, followed by 12 weeks on one of the respective treatment arms): placebo, L-arginine, AGE, or a combination of L-arginine and AGE. The doses of L-arginine and AGE are 1.5 g and 1 g daily, respectively. The primary outcome is to assess migraine response using change in migraine frequency and intensity between baseline and 12 weeks. Secondary outcomes include the impact of L-arginine and/or AGE on photosensitivity, retinal vessel changes, and blood biomarker concentrations of vascular tone, following a 12-week intervention. Discussion The protocol describes the oral administration of 2 nutraceutical-based interventions as possible prophylactic treatments for chronic frequent episodic migraines, with potential for direct clinical translation of outcomes. Potential limitations of the study include the fixed-dose design of each treatment arm and that in vivo neuroimaging methods, such as magnetic resonance imaging (MRI), will not be conducted to determine putative cerebro-vasodilatory changes to coincide with the outcome measures. Dose-response studies may be indicated. Trial registration The trial was retrospectively registered with the Australian New Zealand Clinical Trials Registry ACTRN12621001476820 (Universal Trial Number: U1111-1268-1117) on 04/08/2021. This is protocol version 1, submitted on 25/11/2022.
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- 2023
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8. The Evolution of Diagnostic Techniques in the Paleopathology of Tuberculosis: A Scoping Review
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Veronica Papa, Francesco Maria Galassi, Elena Varotto, Andrea Gori, and Mauro Vaccarezza
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Tuberculosis ,spondylodiscitis ,ancient DNA ,Mycobacterium Tuberculosis Complex (MTBC) ,human remains ,Pathology ,RB1-214 ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Tuberculosis (TB) is an ancient chronic infectious disease that remains a global health concern. In human remains, the most common and characteristic clinical signs are the skeletal modifications involving the spine, such as in Pott’s disease. Diagnosing TB in ancient human remains is challenging. Therefore, in this systematic review, the authors investigated the studies assessing molecular diagnosis of Pott’s disease in ancient human remains with the intention to survey the literature, map the evidence, and identify gaps and future perspectives on TB in paleopathology. Our systematic review offers a full contextualization of the history of Pott’s disease in ancient times. Our search strategy was performed between August 2022 and March 2023. The authors initially identified 340 records, and 74 studies were finally included and assessed for qualitative analysis. Due to non-specific clinical signs associated with TB, how best to diagnose tuberculosis in human remains still represents a central point. Nevertheless, ancient DNA (aDNA) analysis, lipid biomarkers, and spoligotyping might be extremely useful tools in the study of TB in human remains. Moreover, we propose the extraction and study of immune response genes involved in innate and adaptive immunity versus Mycobacterium spp. as an innovative and vastly overlooked approach in TB paleopathology. Complementary methodologies should be integrated to provide the best approach to the study of TB in human remains.
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- 2023
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9. Nutrients, herbal bioactive derivatives and commensal microbiota as tools to lower the risk of SARS-CoV-2 infection
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Arianna Romani, Domenico Sergi, Enrico Zauli, Rebecca Voltan, Giada Lodi, Mauro Vaccarezza, Lorenzo Caruso, Maurizio Previati, and Giorgio Zauli
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SARS-CoV-2 ,COVID-19 ,natural products ,phytochemicals ,ACE-2 ,TMPRSS2 ,Nutrition. Foods and food supply ,TX341-641 - Abstract
The SARS-CoV-2 outbreak has infected a vast population across the world, causing more than 664 million cases and 6.7 million deaths by January 2023. Vaccination has been effective in reducing the most critical aftermath of this infection, but some issues are still present regarding re-infection prevention, effectiveness against variants, vaccine hesitancy and worldwide accessibility. Moreover, although several old and new antiviral drugs have been tested, we still lack robust and specific treatment modalities. It appears of utmost importance, facing this continuously growing pandemic, to focus on alternative practices grounded on firm scientific bases. In this article, we aim to outline a rigorous scientific background and propose complementary nutritional tools useful toward containment, and ultimately control, of SARS-CoV-2 infection. In particular, we review the mechanisms of viral entry and discuss the role of polyunsaturated fatty acids derived from α-linolenic acid and other nutrients in preventing the interaction of SARS-CoV-2 with its entry gateways. In a similar way, we analyze in detail the role of herbal-derived pharmacological compounds and specific microbial strains or microbial-derived polypeptides in the prevention of SARS-CoV-2 entry. In addition, we highlight the role of probiotics, nutrients and herbal-derived compounds in stimulating the immunity response.
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- 2023
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10. Cardiovascular Computed Tomography in the Diagnosis of Cardiovascular Disease: Beyond Lumen Assessment
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Zhonghua Sun, Jenna Silberstein, and Mauro Vaccarezza
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cardiac computed tomography ,3D ,visualization ,diagnosis ,coronary artery disease ,3D printing ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Abstract
Cardiovascular CT is being widely used in the diagnosis of cardiovascular disease due to the rapid technological advancements in CT scanning techniques. These advancements include the development of multi-slice CT, from early generation to the latest models, which has the capability of acquiring images with high spatial and temporal resolution. The recent emergence of photon-counting CT has further enhanced CT performance in clinical applications, providing improved spatial and contrast resolution. CT-derived fractional flow reserve is superior to standard CT-based anatomical assessment for the detection of lesion-specific myocardial ischemia. CT-derived 3D-printed patient-specific models are also superior to standard CT, offering advantages in terms of educational value, surgical planning, and the simulation of cardiovascular disease treatment, as well as enhancing doctor–patient communication. Three-dimensional visualization tools including virtual reality, augmented reality, and mixed reality are further advancing the clinical value of cardiovascular CT in cardiovascular disease. With the widespread use of artificial intelligence, machine learning, and deep learning in cardiovascular disease, the diagnostic performance of cardiovascular CT has significantly improved, with promising results being presented in terms of both disease diagnosis and prediction. This review article provides an overview of the applications of cardiovascular CT, covering its performance from the perspective of its diagnostic value based on traditional lumen assessment to the identification of vulnerable lesions for the prediction of disease outcomes with the use of these advanced technologies. The limitations and future prospects of these technologies are also discussed.
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- 2024
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11. The New Anatomy of Neuroimmunology
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Claudio Solaro, David Barratt, and Mauro Vaccarezza
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neuroinflammation ,meninges ,glympathic system ,CNS immunsurveilance ,neuroimmunology ,Medicine - Abstract
In the past few years, a renowned interest in the interplay between the immune system and central nervous systems (CNS) has sparked a wealth of new experimental studies. Two recent publications in Science shed new light on the “resident” immune cell populations in the CNS and their functions in homeostasis and pathological status, with potential implications in understanding CNS disease mechanisms and in designing new “intelligent” therapies.
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- 2022
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12. Nicotinamide adenine dinucleotide and the sirtuins caution: Pro‐cancer functions
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Raymond D. Palmer and Mauro Vaccarezza
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cancer, disease, NAD, overexpression, sirtuin, upregulation ,Geriatrics ,RC952-954.6 - Abstract
Abstract This scoping review aims to perform a brief but comprehensive assessment of existing peer‐reviewed literature and determine whether raising nicotinamide adenine dinucleotide can prevent or promote tumorigenesis. The examination of extensive peer‐reviewed data regarding the synthesis of nicotinamide adenine dinucleotide has been performed with a focus on nuclear dynamics and the deoxyribose nucleic acid repair pathway. Various enzymatic protective functions have been identified from nicotinamide adenine dinucleotide levels, as well as the threat role that is also explored. Nicotinamide adenine dinucleotide precursors and sirtuin‐activating compounds are becoming ubiquitous in the commercial market. Further research into whether elevating levels of nicotinamide adenine dinucleotide or overexpression of sirtuins can increase the potential for neoplasm or other age‐related pathophysiology is warranted due to the high energy requirements of certain diseases such as cancer.
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- 2021
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13. Precursor comparisons for the upregulation of nicotinamide adenine dinucleotide. Novel approaches for better aging
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Raymond D. Palmer, Magdy Mahmoud Elnashar, and Mauro Vaccarezza
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aging ,nicotinamide ,nicotinamide adenine dinucleotide ,nicotinamide mononucleotide ,nicotinamide riboside ,nicotinic acid ,Geriatrics ,RC952-954.6 - Abstract
Abstract Nicotinamide adenine dinucleotide (NAD) is a coenzyme found in every human cell and regulates a number of systems across multiple cellular compartments and tissue types via an endogenous and exogenous influence. NAD levels are demonstrated to decline with age and therefore measures to counteract the waning of NAD have been devised. A number of NAD precursor candidates such as nicotinamide riboside (NR), nicotinamide mononucleotide (NMN), the reduced form of nicotinamide mononucleotide (NMNH), nicotinic acid (NA) nicotinamide (NAM), and dihydronicotinamide riboside (DNR) increase NAD levels in vitro and in vivo. This discussion will focus on the precursors NR, NMN, NMNH, and DNR in the upregulation of NAD. There are many publications on NAD precursors as it has become popular for human consumption in recent years due to its vital importance to the general consumer. However, there is no consensus between researchers and this was the aim of this review, to determine and discuss their areas of agreement versus disagreement, to highlight the gaps in research, and to give recommendations for future work. Bioavailability and potency of NR, NMNH, NMN, and DNR is also examined on the light of the most recent literature.
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- 2021
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14. Physical Exercise and Appetite Regulation: New Insights
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Lorenzo Caruso, Enrico Zauli, and Mauro Vaccarezza
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obesity ,appetite ,physical exercise ,L-Lactate ,Microbiology ,QR1-502 - Abstract
Physical exercise is considered an important physiological intervention able to prevent cardiovascular diseases, obesity, and obesity-related cardiometabolic imbalance. Nevertheless, basic molecular mechanisms that govern the metabolic benefits of physical exercise are poorly understood. Recent data unveil new mechanisms that potentially explain the link between exercise, feeding suppression, and obesity.
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- 2023
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15. Efficacy of probucol on cognitive function in Alzheimer’s disease: study protocol for a double-blind, placebo-controlled, randomised phase II trial (PIA study)
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Christopher M Reid, Satvinder S Dhaliwal, Leon Flicker, Suzanne Robinson, Nicola Lautenschlager, Ben Horgan, Mauro Vaccarezza, Michael Bynevelt, Gerald Watts, Virginie Lam, Roger Clarnette, Roslyn Francis, Carolyn F Orr, Poh Loh, Jonathan K Foster, Emily Corti, Ryusuke Takechi, and John Mamo
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Medicine - Published
- 2022
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16. Receiver Operating Characteristic Analysis of Posture and Gait Parameters to Prevent Frailty Condition and Fall Risk in the Elderly
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Valentina Presta, Laura Galuppo, Giancarlo Condello, Francesca Rodà, Prisco Mirandola, Marco Vitale, Mauro Vaccarezza, and Giuliana Gobbi
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older people ,posture ,gait ,screening ,prevention ,ROC curve ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Prevention strategies should be constantly improved to manage falls and frailty in the elderly. Therefore, we aimed at creating a screening and predictive protocol as a replicable model in clinical settings. Bioimpedance analysis was conducted on fifty subjects (mean age 76.9 ± 3.69 years) to obtain body composition; then, posture was analysed with a stabilometric platform. Gait performance was recorded by a 10 m walking test, six-minute walking test, and timed up and go test. After 12 months, subjects were interviewed to check for fall events. Non-parametric analysis was used for comparisons between fallers and non-fallers and between able and frail subjects. ROC curves were obtained to identify the predictive value of falling risk and frailty. Path length (area under the curve, AUC = 0.678), sway area (AUC = 0.727), and sway speed (AUC = 0.778) resulted predictive factors of fall events (p < 0.05). The six-minute walking test predicted frailty condition (AUC = 0.840). Timed up and go test was predictive of both frailty (AUC = 0.702) and fall events (AUC = 0.681). Stabilometry and gait tests should be, therefore, included in a screening protocol for the elderly to prevent fall events and recognize the condition of frailty at an early stage.
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- 2023
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17. Cutting-edge biotechnological advancement in islet delivery using pancreatic and cellular approaches
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Magdy Elnashar, Mauro Vaccarezza, and Hani Al-Salami
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auto-transplantation ,bile acid ,diabetes treatment ,encapsulation ,human pancreas ,pancreatic islets ,Medicine ,Medicine (General) ,R5-920 - Abstract
There are approximately 1 billion prediabetic people worldwide, and the global cost for diabetes mellitus (DM) is estimated to be $825 billion. In regard to Type 1 DM, transplanting a whole pancreas or its islets has gained the attention of researchers in the last few decades. Recent studies showed that islet transplantation (ILT) containing insulin-producing β cells is the most notable advancement cure for Type 1 DM. However, this procedure has been hindered by shortage and lack of sufficient islet donors and the need for long-term immunosuppression of any potential graft rejection. The strategy of encapsulation may avoid the rejection of stem-cell-derived allogeneic islets or xenogeneic islets. This review article describes various biotechnology features in encapsulation-of-islet-cell therapy for humans, including the use of bile acids.
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- 2021
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18. Anatomy teaching to Sport Science students
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Veronica Papa and Mauro Vaccarezza
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Special aspects of education ,LC8-6691 ,Theory and practice of education ,LB5-3640 - Abstract
Anatomy has historically been a cornerstone in medical education regardless of nation, racial background, or medical school system. By learning gross anatomy, medical students get a first “impression” about the structure of the human body which is the basis for understanding pathologic and clinical problems. Gross anatomy classes are still regarded as an integral part of human biomedical education worldwide. Dissection of the human body is practiced in most anatomy institutions worldwide despite increasing pressure to reduce material and staff costs, regardless the ongoing debate concerning the suitability of body donors for medical education. Moreover, anatomical teaching skills are also evolving and need to be tailored for the different areas of anatomical expertise students have to acquire therefore, anatomic dissection goes probably beyond the scope of anatomy teaching in some classes such as sports sciences. However, there is no doubt that a practical approach to the study and teaching of anatomy is surely preferable to basic ex cathedra anatomy lectures. Here, we propose a brief insight into new teaching methods suitable for sports sciences students.
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- 2020
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19. New Promises and Challenges on Inflammation and Atherosclerosis: Insights From CANTOS and CIRT Trials
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Raymond D. Palmer and Mauro Vaccarezza
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cardiovascular risk ,acute coronary syndrome ,atherosclerosis ,ischemic heart disease ,vascular disease ,Diseases of the circulatory (Cardiovascular) system ,RC666-701 - Published
- 2019
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20. Notch Signaling Regulates Immune Responses in Atherosclerosis
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Francesco Vieceli Dalla Sega, Francesca Fortini, Giorgio Aquila, Gianluca Campo, Mauro Vaccarezza, and Paola Rizzo
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atherosclerosis ,endothelial dysfunction ,Notch ,Dll4 ,immunity ,M1 macrophages ,Immunologic diseases. Allergy ,RC581-607 - Abstract
Atherosclerosis is a chronic autoimmune inflammatory disease that can cause coronary artery disease, stroke, peripheral artery disease, depending on which arteries are affected. At the beginning of atherosclerosis plasma lipoproteins accumulate in the sub-endothelial space. In response, monocytes migrate from the circulation through the endothelium into the intima where they differentiate into macrophages. These early events trigger a complex immune response that eventually involves many cellular subtypes of both innate and adaptive immunity. The Notch signaling pathway is an evolutionary conserved cell signaling system that mediates cell-to-cell communication. Recent studies have revealed that Notch modulate atherosclerosis by controlling macrophages polarization into M1 or M2 subtypes. Furthermore, it is known that Notch signaling controls differentiation and activity of T-helper and cytotoxic T-cells in inflammatory diseases. In this review, we will discuss the role of Notch in modulating immunity in the context of atherosclerosis and whether targeting Notch may represent a therapeutic strategy.
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- 2019
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21. Physical Activity and Redox Balance in the Elderly: Signal Transduction Mechanisms
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Daniela Galli, Cecilia Carubbi, Elena Masselli, Mauro Vaccarezza, Valentina Presta, Giulia Pozzi, Luca Ambrosini, Giuliana Gobbi, Marco Vitale, and Prisco Mirandola
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ROS ,physical activity ,signal transduction ,aging ,Technology ,Engineering (General). Civil engineering (General) ,TA1-2040 ,Biology (General) ,QH301-705.5 ,Physics ,QC1-999 ,Chemistry ,QD1-999 - Abstract
Reactive Oxygen Species (ROS) are molecules naturally produced by cells. If their levels are too high, the cellular antioxidant machinery intervenes to bring back their quantity to physiological conditions. Since aging often induces malfunctioning in this machinery, ROS are considered an effective cause of age-associated diseases. Exercise stimulates ROS production on one side, and the antioxidant systems on the other side. The effects of exercise on oxidative stress markers have been shown in blood, vascular tissue, brain, cardiac and skeletal muscle, both in young and aged people. However, the intensity and volume of exercise and the individual subject characteristics are important to envisage future strategies to adequately personalize the balance of the oxidant/antioxidant environment. Here, we reviewed the literature that deals with the effects of physical activity on redox balance in young and aged people, with insights into the molecular mechanisms involved. Although many molecular pathways are involved, we are still far from a comprehensive view of the mechanisms that stand behind the effects of physical activity during aging. Although we believe that future precision medicine will be able to transform exercise administration from wellness to targeted prevention, as yet we admit that the topic is still in its infancy.
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- 2021
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22. Muscle Activation in Traditional and Experimental Barbell Bench Press Exercise: A Potential New Tool for Fitness Maintenance
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Andrea Melani, Giuliana Gobbi, Daniela Galli, Cecilia Carubbi, Elena Masselli, Luca Maria Neri, Gaspare Giovinco, Antonio Cicchella, Laura Galuppo, Valentina Presta, Mauro Vaccarezza, Marco Vitale, and Prisco Mirandola
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bench press ,inter-handle distance barbell ,fitness maintenance ,Sports ,GV557-1198.995 - Abstract
Background: The bench press exercise (BP) is commonly practiced in both recreational and professional training. The weight is lowered from a position where the elbows are at a 90° angle at the start and
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- 2019
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23. Impact of Sulphurous Water Politzer Inhalation on Audiometric Parameters in Children with Otitis Media with Effusion
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Prisco Mirandola, Giuliana Gobbi, Chiara Malinverno, Cecilia Carubbi, Filippo M. Ferné, Marco Artico, Marco Vitale, and Mauro Vaccarezza
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Otitis media ,Pediatric audiology ,Sulphur hydrogen ,Spa therapy ,Medicine ,Otorhinolaryngology ,RF1-547 - Abstract
ObjectivesThe positive effects of spa therapy on ear, nose, and throat pathology are known but robust literature in this field, is still lacking. The aim of this study was to assess through a retrospective analysis, the effects on otitis media with effusion of Politzer endotympanic inhalation of sulphurous waters in children aged 5-9 years.MethodsA cohort of 95 patients was treated with Politzer insufflations of sulphurous water: 58 patients did a cycle consisting of a treatment of 12 days per year for three consecutive years; 37 patients followed the same procedure for 5 years consecutively. The control population was represented by untreated, age-matched children. A standard audiometric test was used before and after each cycle of treatment.ResultsOne cycle of Politzer inhalation of sulphur-rich water improved the symptoms. Three cycles definitively stabilized the improvement of hearing function.ConclusionOur results show that otitis media with effusion in children can be resolved by an appropriate non-pharmacological treatment of middle ear with sulphur-rich water.
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- 2013
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24. Inflammation and Cardiovascular Cross Talk in Ischemic Vascular Diseases
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Giorgio Zauli, Veronica Tisato, Joseph D. Raffetto, and Mauro Vaccarezza
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Pathology ,RB1-214 - Published
- 2017
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25. Computed tomography measurement of rib cage morphometry in emphysema.
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Nicola Sverzellati, Davide Colombi, Giorgia Randi, Antonio Pavarani, Mario Silva, Simon L Walsh, Massimo Pistolesi, Veronica Alfieri, Alfredo Chetta, Mauro Vaccarezza, Marco Vitale, and Ugo Pastorino
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Medicine ,Science - Abstract
BACKGROUND: Factors determining the shape of the human rib cage are not completely understood. We aimed to quantify the contribution of anthropometric and COPD-related changes to rib cage variability in adult cigarette smokers. METHODS: Rib cage diameters and areas (calculated from the inner surface of the rib cage) in 816 smokers with or without COPD, were evaluated at three anatomical levels using computed tomography (CT). CTs were analyzed with software, which allows quantification of total emphysema (emphysema%). The relationship between rib cage measurements and anthropometric factors, lung function indices, and %emphysema were tested using linear regression models. RESULTS: A model that included gender, age, BMI, emphysema%, forced expiratory volume in one second (FEV1)%, and forced vital capacity (FVC)% fit best with the rib cage measurements (R(2) = 64% for the rib cage area variation at the lower anatomical level). Gender had the biggest impact on rib cage diameter and area (105.3 cm(2); 95% CI: 111.7 to 98.8 for male lower area). Emphysema% was responsible for an increase in size of upper and middle CT areas (up to 5.4 cm(2); 95% CI: 3.0 to 7.8 for an emphysema increase of 5%). Lower rib cage areas decreased as FVC% decreased (5.1 cm(2); 95% CI: 2.5 to 7.6 for 10 percentage points of FVC variation). CONCLUSIONS: This study demonstrates that simple CT measurements can predict rib cage morphometric variability and also highlight relationships between rib cage morphometry and emphysema.
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- 2013
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26. Teaching Anatomy in the XXI Century: New Aspects and Pitfalls
- Author
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Veronica Papa and Mauro Vaccarezza
- Subjects
Technology ,Medicine ,Science - Abstract
Anatomy has historically been a cornerstone in medical education regardless of nation, racial background, or medical school system. By learning gross anatomy, medical students get a first “impression” about the structure of the human body which is the basis for understanding pathologic and clinical problems. Although the importance of teaching anatomy to both undergraduate and postgraduate students remains undisputed, there is currently a relevant debate concerning methods of anatomy teaching. In the past century, dissection and lectures were its sole pedagogy worldwide. Recently, the time allocated for anatomy teaching was dramatically reduced to such an extent that some suggest that it has fallen below an adequate standard. Traditional anatomy education based on topographical structural anatomy taught in lectures and gross dissection classes has been replaced by a multiple range of study modules, including problem-based learning, plastic models or computer-assisted learning, and curricula integration. “Does the anatomical theatre still have a place in medical education?” And “what is the problem with anatomic specimens?” We endeavor to answer both of these questions and to contribute to the debate on the current situation in undergraduate and graduate anatomy education.
- Published
- 2013
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27. Developing Next-Generation Genome Editing Tools
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Mauro Vaccarezza, Gandadireja, Andrianto Prayogo, Mauro Vaccarezza, and Gandadireja, Andrianto Prayogo
- Abstract
Genome editing is a revolutionary biotechnological field allowing scientists to modify DNA with precision. However, current technologies remain limited and there is a need to explore new genome editing techniques that may provide alternatives to the existing techniques, which is the focus of this thesis. Here we proposed and explored three relatively new systems, namely, prokaryotic argonautes, next-generation adenine base editors, and mitochondrial RNA deaminases, which we have characterised and improved in this work.
- Published
- 2024
28. Peripheral metabolism of lipoprotein-amyloid beta as a risk factor for Alzheimer’s disease: potential interactive effects of APOE genotype with dietary fats
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Zachary J. D’Alonzo, Virginie Lam, Ryu Takechi, Michael Nesbit, Mauro Vaccarezza, and John C. L. Mamo
- Subjects
Endocrinology, Diabetes and Metabolism ,Genetics - Abstract
Alzheimer’s disease (AD) is a progressive neurodegenerative disorder pathologically characterized by brain parenchymal abundance of amyloid-beta (Aβ) and the accumulation of lipofuscin material that is rich in neutral lipids. However, the mechanisms for aetiology of AD are presently not established. There is increasing evidence that metabolism of lipoprotein-Aβ in blood is associated with AD risk, via a microvascular axis that features breakdown of the blood-brain barrier, extravasation of lipoprotein-Aβ to brain parenchyme and thereafter heightened inflammation. A peripheral lipoprotein-Aβ/capillary axis for AD reconciles alternate hypotheses for a vascular, or amyloid origin of disease, with amyloidosis being probably consequential. Dietary fats may markedly influence the plasma abundance of lipoprotein-Aβ and by extension AD risk. Similarly, apolipoprotein E (Apo E) serves as the primary ligand by which lipoproteins are cleared from plasma via high-affinity receptors, for binding to extracellular matrices and thereafter for uptake of lipoprotein-Aβ via resident inflammatory cells. The epsilon APOE ε4 isoform, a major risk factor for AD, is associated with delayed catabolism of lipoproteins and by extension may increase AD risk due to increased exposure to circulating lipoprotein-Aβ and microvascular corruption.
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- 2023
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29. One year of anatomy teaching and learning in the outbreak: Has the Covid‐19 pandemic marked the end of a century‐old practice? A systematic review
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Veronica Papa, Elena Varotto, Massimo Galli, Mauro Vaccarezza, and Francesco M. Galassi
- Subjects
SH4_11 ,Embryology ,Students, Medical ,Histology ,SARS-CoV-2 ,anatomy laboratories, body donation, cadaveric dissection, Covid-19, gross anatomy education, infectious diseases, medical education, pandemic ,Teaching ,pandemic ,Socio-culturale ,General Medicine ,infectious diseases ,Education, Distance ,anatomy laboratories ,body donation ,cadaveric dissection ,Humans ,Curriculum ,gross anatomy education ,Anatomy ,Covid-19 ,medical education ,Pandemics ,Education, Medical, Undergraduate - Abstract
At the end of 2019, the Covid-19 pandemic spread caused restrictions in business and social spheres. Higher education was also severely affected: universities and medical schools moved online to distance learning and laboratory facilities closed. Questions arise about the long-term effects of this pandemic on anatomical education. In this systematic review, the authors investigated whether or not anatomical educators were able to deliver anatomical knowledge during this pandemic. They also discuss the challenges that anatomical education has faced over the last year. The search strategy was conducted between July 2020 and July 2021. Two hundred and one records were identified, and a total of 79 studies were finally included. How best to deliver anatomy to students remains a moot point. In the last years, the advent of new technologies has raised the question of the possible overcoming of dissection as the main instrument in anatomical education. The Covid-19 pandemic further sharpened the debate. Remote learning enhanced the use of technologies other than cadaveric dissection to teach anatomy. Moreover, from the analyzed records it appears that both from students' perspective as well as teachers' there is a clear tear between those who endorse dissection and those who believe it could be easily overcome or at least integrated by virtual reality and online learning. The authors strongly believe that the best anatomy teaching practice requires the careful adaptation of resources and methods. Nevertheless, they support cadaveric dissection and hope that it will not be replaced entirely as a result of this pandemic.
- Published
- 2022
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30. The Ability of Nutrition to Mitigate Epigenetic Drift: A Novel Look at Regulating Gene Expression
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Raymond D. PALMER, Veronica PAPA, and Mauro VACCAREZZA
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Nutrition and Dietetics ,genomic diet ,Gene Expression ,Nutritional Status ,Medicine (miscellaneous) ,DNA Methylation ,NO ,Epigenesis, Genetic ,epigenetic drift ,epigenetic diet ,gene expression ,histones ,methylation ,nutraceutical ,nutrigenomics ,Genetic ,LS2_8 ,Epigenesis - Abstract
Epigenetic drift causes modification in gene expression during aging and a myriad of physiological changes that are mostly undesirable, remove youthful phenotype and are related to biological decay and disease onset. The epigenome is considered a stable regulator of genetic expression. Moreover, evidence is now accumulating that commonly available compounds found in foods can influence the epigenome to embrace a more youthful and therefore, more disease resistant state. Here we explore the correlation between nutriment and the epigenetic regulation through various types of alimentation. The aim is not to discuss specific chemicals involved in disease onset. Instead, we offer a brief glance at pathogens and offer a practical pathway into epigenetic regulation, hypothesizing that epigenetic drift might be attenuated by several foods able to drive a more youthful and disease resistant phenotype.
- Published
- 2021
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31. L-arginine and aged garlic extract for the prevention of migraine: a study protocol for a randomised, double-blind, placebo-controlled, phase-II trial (LARGE trial)
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Devahuti R. Chaliha, Mauro Vaccarezza, Emily Corti, Ryusuke Takechi, Satvinder S. Dhaliwal, Peter Drummond, Eric Visser, Fred K. Chen, Jason Charng, Virginie Lam, and John C.L. Mamo
- Subjects
Neurology (clinical) ,General Medicine - Abstract
IntroductionMigraine is a common and distressing neurological condition characterised by recurrent throbbing headaches, nausea and heightened sensitivity to light and sound. Accumulating evidence suggests that cerebral arteries dilate during migraine, causing distal microvessels to constrict, which could activate nociceptors and cause onset of headache pain. If so, preventing or attenuating chronic microvascular constriction, and promoting a dilatory phenotype, may reduce frequency and/or severity of migraines. The primary aim of the L-Arginine and Aged Garlic Extract (LARGE) trial is to investigate whether oral treatment with dietary nutraceuticals, L-arginine and aged garlic extract (AGE), both systemic vasodilatory agents, will alleviate migraine frequency, duration and severity in adults with chronic frequent episodic migraines.Methods and analysisThe study is a randomised double-blind placebo-controlled phase-II single-site clinical trial conducted in Perth, Australia. The target sample is to recruit 240 participants diagnosed with chronic frequent episodic migraines between 18 and 80 years of age. Participants will be randomised to one of four treatment groups for 14 weeks (placebo induction for 2 weeks, followed by 12 weeks on one of the respective treatment arms): placebo, L-arginine, AGE, or a combination of L-arginine and AGE. The doses of L-arginine and AGE are 1.5 g and 1 g daily, respectively. The primary outcome is to assess migraine response using change in migraine frequency and intensity between baseline and 12 weeks. Secondary outcomes include the impact of L-arginine and/or AGE on photosensitivity, retinal vessel changes, and blood biomarker concentrations of vascular tone, following a 12-week intervention.Ethics and disseminationThe Curtin University Human Research Ethics Committee (HREC) has approved this study (Approval number: HRE2020-0466; Version 4; 16thAugust 2021). Written consent will be obtained from all participants prior to commencing their participation in the trial. The results of the study will be disseminated in peer-reviewed publications and presented at key national and international conferences and local stakeholder events.Registration detailsThe trial is registered with the Australian New Zealand Clinical Trials RegistryACTRN12621001476820 (Universal Trial Number: U1111-1268-1117).Strengths and limitations of the studyThis is the first in-human randomised double-blind placebo-controlled phase-II clinical trial examining the efficacy, safety and tolerability of L-arginine and AGE, in preventing chronic frequent episodic migraines by assessing participant-reported pain-related outcomes, and changes in photosensitivity and retinal vessels.The double-blinded nature of the study, and the placebo run-in for 2 weeks at the beginning of the study, are strengths in trial methodology.The protocol describes the oral administration of 2 nutraceutical-based interventions as possible prophylactic treatments for chronic frequent episodic migraines, with potential for direct clinical translation of outcomes.Potential limitations of the study include the fixed-dose design of each treatment arm and thatin vivoneuroimaging methods, such as magnetic resonance imaging (MRI), will not be conducted to determine putative cerebro-vasodilatory changes to coincide with the outcome measures. Dose-response studies may be indicated.
- Published
- 2022
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32. A Systematic Review of the MDMA Model to Address Social Impairment in Autism
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John C.L. Mamo, Devahuti Chaliha, Ryu Takechi, Virginie Lam, Mauro Vaccarezza, and Matthew A. Albrecht
- Subjects
MDMA ,N-Methyl-3,4-methylenedioxyamphetamine ,media_common.quotation_subject ,autism spectrum disorder ,Empathy ,Article ,NO ,social behavior ,Pharmacological treatment ,Neurodevelopmental disorder ,3, 4-methylenedioxymethamphetamine, animal, autism spectrum disorder, human, MDMA, social behavior ,mental disorders ,medicine ,Animals ,Humans ,animal ,Pharmacology (medical) ,LS5_3 ,4-methylenedioxymethamphetamine ,human ,Autistic Disorder ,media_common ,Pharmacology ,General Medicine ,3,4-methylenedioxymethamphetamine ,medicine.disease ,Clinical trial ,Disease Models, Animal ,Psychiatry and Mental health ,Neurology ,Prosocial behavior ,Autism spectrum disorder ,Autism ,Neurology (clinical) ,Psychology ,psychological phenomena and processes ,Clinical psychology ,medicine.drug - Abstract
Background: Autism Spectrum Disorder (ASD) is a neurodevelopmental disorder characterised by repetitive behaviours, cognitive rigidity/inflexibility, and social-affective impairment. Unfortunately, no gold-standard treatments exist to alleviate the core socio-behavioural impairments of ASD. Meanwhile, the prosocial empathogen/entactogen 3,4- methylene-dioxy-methamphetamine (MDMA) is known to enhance sociability and empathy in both humans and animal models of psychological disorders. Objective: We review the evidence obtained from behavioural tests across the current literature, showing how MDMA can induce prosocial effects in animals and humans, where controlled experiments were able to be performed. Methods: Six electronic databases were consulted. The search strategy was tailored to each database. Only Englishlanguage papers were reviewed. Behaviours not screened in this review may have affected the core ASD behaviours studied. Molecular analogues of MDMA have not been investigated. Results: We find that the social impairments may potentially be alleviated by postnatal administration of MDMA producing prosocial behaviours in mostly the animal model. Conclusion: MDMA and/or MDMA-like molecules appear to be an effective pharmacological treatment for the social impairments of autism, at least in animal models. Notably, clinical trials based on MDMA use are now in progress. Nevertheless, larger and more extended clinical studies are warranted to prove the assumption that MDMA and MDMA-like molecules have a role in the management of the social impairments of autism.
- Published
- 2021
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33. Teaching anatomy through images: the power of anatomical drawings
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Veronica Papa, Elena Varotto, Mauro Vaccarezza, and Francesco M. Galassi
- Subjects
Power (social and political) ,medicine.medical_specialty ,Anthropology ,media_common.quotation_subject ,medicine ,Medical physics ,Art ,Anatomy education ,media_common - Published
- 2021
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34. Efficacy of probucol on cognitive function in Alzheimer's disease: study protocol for a double-blind, placebo-controlled, randomised phase II trial (PIA study)
- Author
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Virginie Lam, Roger Clarnette, Roslyn Francis, Michael Bynevelt, Gerald Watts, Leon Flicker, Carolyn F Orr, Poh Loh, Nicola Lautenschlager, Christopher M Reid, Jonathan K Foster, Satvinder S Dhaliwal, Suzanne Robinson, Emily Corti, Mauro Vaccarezza, Ben Horgan, Ryusuke Takechi, and John Mamo
- Subjects
Amyloid beta-Peptides ,Australia ,General Medicine ,Mice ,Clinical Trials, Phase II as Topic ,Cognition ,Probucol ,Treatment Outcome ,Double-Blind Method ,Alzheimer Disease ,Quality of Life ,Animals ,Humans ,Randomized Controlled Trials as Topic - Abstract
IntroductionPreclinical, clinical and epidemiological studies support the hypothesis that aberrant systemic metabolism of amyloid beta (Aβ) in the peripheral circulation is causally related to the development of Alzheimer’s disease (AD). Specifically, recent studies suggest that increased plasma concentrations of lipoprotein-Aβ compromise the brain microvasculature, resulting in extravasation and retention of the lipoprotein-Aβ moiety. The latter results in an inflammatory response and neurodegeneration ensues. Probucol, a historic cholesterol-lowering drug, has been shown in murine models to suppress lipoprotein-Aβ secretion, concomitant with maintaining blood–brain-barrier function, suppressing neurovascular inflammation and supporting cognitive function. This protocol details the probucol in Alzheimer’s study, a drug intervention trial investigating if probucol has potential to attenuate cognitive decline, delay brain atrophy and reduce cerebral amyloid burden in patients with mild-to-moderate AD.Methods and analysisThe study is a phase II, randomised, placebo-controlled, double-blind single-site clinical trial held in Perth, Australia. The target sample is 314 participants with mild-to-moderate AD. Participants will be recruited and randomised (1:1) to a 104-week intervention consisting of placebo induction for 2 weeks followed by 102 weeks of probucol (Lorelco) or placebo. The primary outcome is changed in cognitive performance determined via the Alzheimer’s Disease Assessment Scales-Cognitive Subscale test between baseline and 104 weeks. Secondary outcomes measures will be the change in brain structure and function, cerebral amyloid load, quality of life, and the safety and tolerability of Lorelco, after a 104week intervention.Ethics and disseminationThe study has been approved by the Bellberry Limited Human Research Ethics Committee (approval number: HREC2019-11-1063; Version 4, 6 October 2021). Informed consent will be obtained from participants prior to any study procedures being performed. The investigator group will disseminate study findings through peer-reviewed publications, key conferences and local stakeholder events.Trial registration numberAustralian New Zealand Clinical Trials Registry (ACTRN12621000726853).
- Published
- 2022
35. Inflammation Beats Cholesterol: A Comment on the Unequivocal Driver of Cardiovascular Disease Risk
- Author
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Mauro Vaccarezza and Francesco Maria Galassi
- Subjects
General Medicine - Abstract
Despite advancements in the current standard of care, cardiovascular diseases continue to hold the top spot as the leading cause of mortality worldwide. The development of atherosclerosis is the most common culprit behind ailments such as myocardial infarction, stroke, and peripheral vascular disease. Consequently, it imposes a significant burden on life expectancy, quality of life, morbidity, and societal costs. Both increased cholesterol levels and the activation of the inflammatory cascade are known as cardiovascular risk facts. Their relative weight is in the spotlight of curent biomedical research. Newly published data shed light on the role of inflammation in determining cardiovascular risk irrespective of cholesterol levels and cholesterol-lowering therapies.
- Published
- 2023
- Full Text
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36. Attenuation of chronic tension headache frequency and severity with daily l-arginine and aged garlic extract dietary supplementation
- Author
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John C.L. Mamo, Ryusuke Takechi, Devahuti Chaliha, Virginie Lam, and Mauro Vaccarezza
- Subjects
medicine.medical_specialty ,Arginine ,Tension headache ,Medicine (miscellaneous) ,Vasodilation ,Gastroenterology ,law.invention ,Constriction ,Double-Blind Method ,Randomized controlled trial ,law ,Internal medicine ,medicine ,Humans ,Dietary supplementation ,Garlic ,Aged ,Nutrition and Dietetics ,Plant Extracts ,business.industry ,Tension-Type Headache ,medicine.disease ,Treatment Outcome ,Migraine ,Dietary Supplements ,Female ,business - Abstract
A 74-year-old female subject with suboptimal management of episodic tension headache was treated with a daily dose of 1.5 g L-arginine and 1.2 g aged garlic extract (AGE). The aim of the intervention was to promote vasodilation of parenchymal cerebral blood vessels. Within 6 weeks of commencing treatment, her self-reported symptoms improved markedly and were sustained at 2 years following commencement. We propose that the putative beneficial effect of L-arginine and AGE in this patient is because of the well-established systemic vasodilatory effects of L-arginine and aged garlic extract. On the hypothesis that migraine is precipitated by cerebral microvascular constriction, we recommend a double-blind randomised controlled trial to clinically test this hypothesis in migraine patients.
- Published
- 2021
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37. Updated report on the study of the Neapolitan'eared skull
- Author
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Papa, Veronica, Elena, Varotto, DEL PIZZO, Silvio, Troisi, Salvatore, DI CIACCIO, Fabiana, Silvia Sofia Staiano, Stefano, Vanin, Mauro, Vaccarezza, Laura, Landini, and Carlo Cantile Francesco Maria Galassi
- Published
- 2022
38. Efficacy of Probucol on cognitive function in Alzheimer’s disease: Study protocol for a double-blind, placebo-controlled, randomised phase II trial (PIA Study)
- Author
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Carolyn Orr, Roger Clarnette, Gerald F. Watts, Ben Horgan, Suzanne Robinson, Satvinder S. Dhaliwal, Emily J. Corti, Mauro Vaccarezza, Virginie Lam, Jonathan K. Foster, Michael Bynevelt, Nicola T. Lautenschlager, Leon Flicker, Ryusuke Takechi, Roslyn J. Francis, Christopher M. Reid, Poh Loh, and John C.L. Mamo
- Subjects
Oncology ,medicine.medical_specialty ,business.industry ,Probucol ,medicine.disease ,Placebo ,Clinical trial ,Atrophy ,Internal medicine ,Concomitant ,Medicine ,Dementia ,Alzheimer's disease ,Cognitive decline ,business ,medicine.drug - Abstract
IntroductionPreclinical, clinical and epidemiological studies support the hypothesis that aberrant systemic metabolism of amyloid-beta (Aβ) in the peripheral circulation is causally related to the development of Alzheimer’s disease (AD). Specifically, recent studies suggest that increased plasma concentrations of lipoprotein-Aβ compromises the brain microvasculature, resulting in extravasation and retention of the lipoprotein-Aβ moiety. The latter results in an inflammatory response and neurodegeneration ensues.Probucol, a historic cholesterol-lowering drug, has been shown in murine models to suppress lipoprotein-Aβ secretion, concomitant with maintaining blood-brain-barrier function and suppressing neurovascular inflammation. Probucol has also been shown to protect cognitive function in dietary-induced amyloidogenic mice.This protocol details the Probucol in Alzheimer’s Study (PIA-study), a double-blind, randomised, placebo-controlled drug intervention trial investigating if Probucol attenuates cognitive decline in patients with mild-to-moderate AD.ObjectivesThe primary objective of the 104-week study is to assess whether Probucol supports cognitive function and delays brain atrophy in AD patients. A secondary objective is to determine whether Probucol treatment will reduce cerebral amyloid burden.Methods & AnalysisThe study is a phase II single-site, randomised, placebo-controlled, double-blind clinical trial assessing the efficacy of Probucol in AD. A total of 300 participants with mild-to-moderate AD will be recruited and randomised 1:1 (active: placebo). Cognitive function, regional volumetric changes in brain and cerebral amyloid load will be evaluated via the cognitive subscale test, AD assessment scales (ADAS-Cog), magnetic resonance imaging (MRI) and positron emission tomography (PET) scans, respectively, after a 104-week intervention.Ethics & DisseminationThe study has been approved by the Bellberry Limited Human Research Ethics Committee (Approval number: HREC2019-11-1063; Version 4, 6thOctober 2021). The investigator group will disseminate study findings through peer-reviewed publications, key conferences and local stakeholder events.Trial registrationThis trial has been registered with the Australian New Zealand Clinical Trial Registry (ACTRN12621000726853).ARTICLE SUMMARYStrengths and limitations of this studyThis is the first-in-human (FIH) randomised double-blind placebo-controlled study to assess the efficacy of Probucol in delaying cognitive decline in individuals with mild cognitive impairment (MCI) and mild-to-moderate dementia due to Alzheimer’s disease (AD).The 24-month intervention study will be the first to investigate whether treatment with Probucol will stabilise structural/functional changes in brain and if cerebral amyloid load will decrease in individuals with AD, following treatment with Probucol.Probucol is clinically used to treat cardiovascular disease with well-characterised efficacy and safety profiles, thus reducing risk of the study, and if applicable, accelerate clinical translation of the study findings.
- Published
- 2021
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39. Trimethylamine N-oxide (TMAO): a new attractive target to decrease cardiovascular risk
- Author
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Ione Swanepoel, Veronica Papa, Mauro Vaccarezza, Chelsea Brauns, Devahuti Chaliha, Raymond D. Palmer, and April Roberts
- Subjects
cardiovascular risk ,platelet reactivity ,Cvd risk ,Trimethylamine N-oxide ,Disease ,030204 cardiovascular system & hematology ,Bioinformatics ,NO ,adult cardiology ,biophysics ,coronary heart disease ,microbiology ,pathology ,vascular medicine ,03 medical and health sciences ,chemistry.chemical_compound ,Methylamines ,0302 clinical medicine ,Risk Factors ,Medicine ,Humans ,030304 developmental biology ,0303 health sciences ,business.industry ,General Medicine ,Trimethylamine N-Oxide (TMAO) ,Coronary heart disease ,Increased risk ,chemistry ,Cardiovascular Diseases ,Heart Disease Risk Factors ,atherosclerosis, Trimethylamine N-Oxide (TMAO), cardiovascular risk, platelet reactivity ,atherosclerosis ,business - Abstract
Cardiovascular disease (CVD) is one of the greatest disease burdens and takes the lives of many each year. There are many risk factors both modifiable and non-modifiable which contribute to the onset and progression of the disease. Trimethylamine N-oxide (TMAO) in recent years has been found to have a correlation with CVD onset. Those with increased levels of the metabolite have a markedly increased risk of future development of cardiometabolic disorders. This literature review aimed to critique past studies undertaken to find a consensus of the significance of the interrelationship between TMAO and cardiovascular risk. A definite link between TMAO levels and a CVD outcome was found. The majority of the literature stated the relationship with evidence; however, there is still some uncertainty as to why and how the correlation occurs. Further study needs to be done to further dissect and understand the relationship between TMAO and CVD risk.
- Published
- 2021
40. Precursor comparisons for the upregulation of nicotinamide adenine dinucleotide. Novel approaches for better aging
- Author
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Magdy M. M. Elnashar, Raymond D. Palmer, and Mauro Vaccarezza
- Subjects
nicotinamide mononucleotide ,nicotinamide ,Review Article ,Nicotinamide adenine dinucleotide ,Cofactor ,NO ,chemistry.chemical_compound ,aging, nicotinamide, nicotinamide adenine dinucleotide, nicotinamide mononucleotide, nicotinamide riboside, nicotinic acid, reduced nicotinamide mononucleotide ,Downregulation and upregulation ,LS4_4 ,nicotinic acid ,Review Articles ,nicotinamide adenine dinucleotide ,Nicotinamide mononucleotide ,nicotinamide riboside ,Nicotinamide ,biology ,aging ,RC952-954.6 ,General Medicine ,Riboside ,Biochemistry ,chemistry ,reduced nicotinamide mononucleotide ,Geriatrics ,Nicotinamide riboside ,biology.protein ,NAD+ kinase - Abstract
Nicotinamide adenine dinucleotide (NAD) is a coenzyme found in every human cell and regulates a number of systems across multiple cellular compartments and tissue types via an endogenous and exogenous influence. NAD levels are demonstrated to decline with age and therefore measures to counteract the waning of NAD have been devised. A number of NAD precursor candidates such as nicotinamide riboside (NR), nicotinamide mononucleotide (NMN), the reduced form of nicotinamide mononucleotide (NMNH), nicotinic acid (NA) nicotinamide (NAM), and dihydronicotinamide riboside (DNR) increase NAD levels in vitro and in vivo. This discussion will focus on the precursors NR, NMN, NMNH, and DNR in the upregulation of NAD. There are many publications on NAD precursors as it has become popular for human consumption in recent years due to its vital importance to the general consumer. However, there is no consensus between researchers and this was the aim of this review, to determine and discuss their areas of agreement versus disagreement, to highlight the gaps in research, and to give recommendations for future work. Bioavailability and potency of NR, NMNH, NMN, and DNR is also examined on the light of the most recent literature., Effects of NAD‐boosting molecules on human physiology. NAD+ boosters have a substantial effect on the well‐being and survival of mammals.
- Published
- 2021
41. Preliminary notes on a human eared skull
- Author
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Papa, Veronica, Elena, Varotto, DEL PIZZO, Silvio, Troisi, Salvatore, DI CIACCIO, Fabiana, Silvia Sofia Staiano, Carmine, Lubritto, Stefano, Vanin, Mauro, Vaccarezza, and Francesco Maria Galassi
- Published
- 2021
42. Physical Activity and Redox Balance in the Elderly: Signal Transduction Mechanisms
- Author
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Prisco Mirandola, Marco Vitale, Giulia Pozzi, Valentina Presta, Cecilia Carubbi, Luca Ambrosini, Daniela Galli, Elena Masselli, Giuliana Gobbi, and Mauro Vaccarezza
- Subjects
0301 basic medicine ,Antioxidant ,medicine.medical_treatment ,Physical activity ,physical activity ,medicine.disease_cause ,lcsh:Technology ,Redox ,NO ,lcsh:Chemistry ,03 medical and health sciences ,0302 clinical medicine ,Medicine ,General Materials Science ,lcsh:QH301-705.5 ,Instrumentation ,Balance (ability) ,Fluid Flow and Transfer Processes ,chemistry.chemical_classification ,Reactive oxygen species ,ROS, physical activity, signal transduction, aging ,lcsh:T ,business.industry ,Process Chemistry and Technology ,aging ,General Engineering ,ROS ,Precision medicine ,lcsh:QC1-999 ,Computer Science Applications ,030104 developmental biology ,lcsh:Biology (General) ,lcsh:QD1-999 ,chemistry ,lcsh:TA1-2040 ,Signal transduction ,lcsh:Engineering (General). Civil engineering (General) ,business ,Neuroscience ,lcsh:Physics ,030217 neurology & neurosurgery ,Oxidative stress ,signal transduction - Abstract
Reactive Oxygen Species (ROS) are molecules naturally produced by cells. If their levels are too high, the cellular antioxidant machinery intervenes to bring back their quantity to physiological conditions. Since aging often induces malfunctioning in this machinery, ROS are considered an effective cause of age-associated diseases. Exercise stimulates ROS production on one side, and the antioxidant systems on the other side. The effects of exercise on oxidative stress markers have been shown in blood, vascular tissue, brain, cardiac and skeletal muscle, both in young and aged people. However, the intensity and volume of exercise and the individual subject characteristics are important to envisage future strategies to adequately personalize the balance of the oxidant/antioxidant environment. Here, we reviewed the literature that deals with the effects of physical activity on redox balance in young and aged people, with insights into the molecular mechanisms involved. Although many molecular pathways are involved, we are still far from a comprehensive view of the mechanisms that stand behind the effects of physical activity during aging. Although we believe that future precision medicine will be able to transform exercise administration from wellness to targeted prevention, as yet we admit that the topic is still in its infancy.
- Published
- 2021
43. Cutting-edge biotechnological advancement in islet delivery using pancreatic and cellular approaches
- Author
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Mauro Vaccarezza, Magdy M. M. Elnashar, and Hani Al-Salami
- Subjects
0301 basic medicine ,endocrine system ,endocrine system diseases ,030209 endocrinology & metabolism ,Review ,Diabetes treatment ,NO ,03 medical and health sciences ,0302 clinical medicine ,stem cells ,LS1_2 ,Medicine ,LS7_3 ,LS9_1 ,bile acid ,LS7_1 ,auto-transplantation, bile acid, diabetes treatment, encapsulation, human pancreas, pancreatic islets, stem cells, transplantation, Type 1 diabetes ,geography ,Type 1 diabetes ,geography.geographical_feature_category ,pancreatic islets ,business.industry ,diabetes treatment ,auto-transplantation ,Islet ,medicine.disease ,Biotechnology ,Transplantation ,030104 developmental biology ,Human pancreas ,human pancreas ,encapsulation ,business ,transplantation - Abstract
There are approximately 1 billion prediabetic people worldwide, and the global cost for diabetes mellitus (DM) is estimated to be $825 billion. In regard to Type 1 DM, transplanting a whole pancreas or its islets has gained the attention of researchers in the last few decades. Recent studies showed that islet transplantation (ILT) containing insulin-producing β cells is the most notable advancement cure for Type 1 DM. However, this procedure has been hindered by shortage and lack of sufficient islet donors and the need for long-term immunosuppression of any potential graft rejection. The strategy of encapsulation may avoid the rejection of stem-cell-derived allogeneic islets or xenogeneic islets. This review article describes various biotechnology features in encapsulation-of-islet-cell therapy for humans, including the use of bile acids., Lay abstract The global cost for diabetes mellitus (DM) is estimated to be $825 billion. With regard to Type 1 DM, transplanting pancreas whole/islets have gained the attention of researchers in the last few decades. Recent studies have demonstrated that islet transplants containing insulin-producing β cells is the most notable advancement cure for Type 1 DM. However, this procedure has been hampered by islet donor shortage and the need for long-term immunosuppressive therapy. An encapsulation strategy could overcome these shortcomings. Here, we discuss various biotechnology features in the encapsulation of islet cell therapy for humans including the use of bile acids.
- Published
- 2021
44. A Systematic Review of the Valproic-Acid-Induced Rodent Model of Autism
- Author
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John C.L. Mamo, Ryu Takechi, Mauro Vaccarezza, Virginie Lam, Hani Al-Salami, Matthew A. Albrecht, and Devahuti Chaliha
- Subjects
Gestational exposure ,Autism ,Behaviour ,Rodent ,Valproic acid ,Cognitive rigidity ,Rodentia ,NO ,03 medical and health sciences ,0302 clinical medicine ,Neurodevelopmental disorder ,Animal model ,Developmental Neuroscience ,mental disorders ,medicine ,Animals ,Humans ,Autistic Disorder ,Social Behavior ,Valproic Acid ,Behavior, Animal ,business.industry ,Rodent model ,medicine.disease ,030227 psychiatry ,Disease Models, Animal ,Neurology ,Autism spectrum disorder ,lipids (amino acids, peptides, and proteins) ,Anticonvulsants ,business ,Neuroscience ,030217 neurology & neurosurgery ,medicine.drug - Abstract
Autism spectrum disorder (ASD) is a neurodevelopmental disorder characterised by repetitive behaviours, cognitive rigidity/inflexibility, and social-affective impairment. Unfortunately, few pharmacological treatments exist to alleviate these socio-behavioural impairments. Prenatal administration of valproic acid (VPA) has become an accepted animal model of ASD and has been extensively used to explore new pharmacotherapies in rodents. We conducted a systematic review of the behavioural impairments induced by the VPA model in rodents, with specific reference to 3 core socio-behavioural alterations associated with ASD: repetitive behaviours, cognitive rigidity/inflexibility, and social-affective impairment. We systematically reviewed studies attempting to alleviate these core behavioural alterations using pharmacological means. We include 132 studies exploring the prenatal effects of VPA in rodents. Gestational exposure to VPA in rodents has significant effects on rodent-equivalent measures of the 3 core behavioural traits characteristic of ASD in humans, inducing social impairments, repetitive behaviour, and cognitive rigidity/inflexibility after birth. This model’s validity has seen it used to test potential drug treatments for ASD and is likely to continue doing so. We conclude the rodent VPA model may be suitable to examine future therapeutic interventions for ASD, providing an overview of the progress made so far.
- Published
- 2020
45. 3D-Printed specimens as a valuable tool in anatomy education: A pilot study
- Author
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Monique Garas, George Newland, Mauro Vaccarezza, Kylie McVay-Doornbusch, and Jamila Hasani
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Models, Anatomic ,0301 basic medicine ,Shoulder ,3d printed ,medicine.medical_specialty ,Educational measurement ,natomical models ,020205 medical informatics ,Population ,Pilot Projects ,3d model ,02 engineering and technology ,Gross anatomy education ,NO ,Cohort Studies ,Gross anatomy education,3D printing,Medical educationA,natomical models,3D imaging technique,sMulti-color 3D printing ,sMulti-color 3D printing ,03 medical and health sciences ,Cadaver ,0202 electrical engineering, electronic engineering, information engineering ,medicine ,Humans ,Medical physics ,Gross anatomy education3D printingMedical educationAnatomical models3D imaging techniquesMulti-color 3D printing ,education ,education.field_of_study ,Heart ,3D printing ,General Medicine ,Anatomy education ,Magnetic Resonance Imaging ,Test (assessment) ,Tomography x ray computed ,Thigh ,Printing, Three-Dimensional ,Feasibility Studies ,Educational Measurement ,030101 anatomy & morphology ,Laboratory safety ,Anatomy ,Medical educationA ,Tomography, X-Ray Computed ,Psychology ,Plastics ,3D imaging technique ,Developmental Biology - Abstract
Three-dimensional (3D) printing is a modern technique of creating 3D-printed models that allows reproduction of human structures from MRI and CT scans via fusion of multiple layers of resin materials. To assess feasibility of this innovative resource as anatomy educational tool, we conducted a preliminary study on Curtin University undergraduate students to investigate the use of 3D models for anatomy learning as a main goal, to assess the effectiveness of different specimen types during the sessions and personally preferred anatomy learning tools among students as secondary aim. The study consisted of a pre-test, exposure to test (anatomical test) and post-test survey. During pre-test, all participants (both without prior experience and experienced groups) were given a brief introduction on laboratory safety and study procedure thus participants were exposed to 3D, wet and plastinated specimens of the heart, shoulder and thigh to identify the pinned structures (anatomical test). Then, participants were provided a post-test survey containing five questions. In total, 23 participants completed the anatomical test and post-test survey. A larger number of participants (85%) achieved right answers for 3D models compared to wet and plastinated materials, 74% of population selected 3D models as the most usable tool for identification of pinned structures and 45% chose 3D models as their preferred method of anatomy learning. This preliminary small-size study affirms the feasibility of 3D-printed models as a valuable asset in anatomy learning and shows their capability to be used adjacent to cadaveric materials and other widely used tools in anatomy education.
- Published
- 2018
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46. Context-dependent function of ROS in the vascular endothelium: The role of the Notch pathway and shear stress
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Giorgio Aquila, Paola Rizzo, Paola Secchiero, Francesca Fortini, Gianluca Campo, Mauro Vaccarezza, and Francesco Vieceli Dalla Sega
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0301 basic medicine ,chemistry.chemical_classification ,Reactive oxygen species ,Endothelium ,Clinical Biochemistry ,Notch signaling pathway ,General Medicine ,medicine.disease ,Biochemistry ,Cell biology ,Vascular endothelium ,03 medical and health sciences ,Crosstalk (biology) ,030104 developmental biology ,medicine.anatomical_structure ,chemistry ,Shear stress ,medicine ,Molecular Medicine ,Endothelial dysfunction ,Signal transduction - Abstract
Reactive oxygen species (ROS) act as signal molecules in several biological processes whereas excessive, unregulated, ROS production contributes to the development of pathological conditions including endothelial dysfunction and atherosclerosis. The maintenance of a healthy endothelium depends on many factors and on their reciprocal interactions; in this framework, the Notch pathway and shear stress (SS) play two lead roles. Recently, evidence of a crosstalk between ROS, Notch, and SS, is emerging. The aim of this review is to describe the way ROS interact with the Notch pathway and SS protecting from-or promoting-the development of endothelial dysfunction. © 2017 BioFactors, 43(4):475-485, 2017.
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- 2017
- Full Text
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47. NK cells: A double edge sword against SARS-CoV-2
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Marco Vitale, Valentina Presta, Elena Masselli, Mauro Vaccarezza, Giulia Pozzi, Cecilia Carubbi, and Prisco Mirandola
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0301 basic medicine ,NK cells ,COVID-19 ,Viral infection ,Lung inflammation ,Viral infection ,Coronavirus Infections ,Cancer Research ,Cell type ,Antigen presentation ,Pneumonia, Viral ,Biology ,medicine.disease_cause ,Lymphocyte Activation ,Article ,NO ,03 medical and health sciences ,Betacoronavirus ,Interferon-gamma ,0302 clinical medicine ,Immune system ,Lysosomal-Associated Membrane Protein 1 ,Genetics ,medicine ,Interferon gamma ,Molecular Biology ,Lung ,Pandemics ,Coronavirus ,Innate immune system ,SARS-CoV-2 ,Tumor Necrosis Factor-alpha ,Interleukins ,COVID-19 ,Immunity, Innate ,Killer Cells, Natural ,030104 developmental biology ,Gene Expression Regulation ,030220 oncology & carcinogenesis ,Immunology ,Acute Disease ,Host-Pathogen Interactions ,Molecular Medicine ,Tumor necrosis factor alpha ,NK Cell Lectin-Like Receptor Subfamily C ,Respiratory Insufficiency ,medicine.drug - Abstract
Natural killer (NK) cells are pivotal effectors of the innate immunity protecting an individual from microbes. They are the first line of defense against invading viruses, given their substantial ability to directly target infected cells without the need for specific antigen presentation. By establishing cellular networks with a variety of cell types such as dendritic cells, NK cells can also amplify and modulate antiviral adaptive immune responses. In this review, we will examine the role of NK cells in SARS-COV2 infections causing the ongoing COVID19 pandemic, keeping in mind the controversial role of NK cells specifically in viral respiratory infections and in inflammatory-driven lung damage. We discuss lessons learnt from previous coronavirus outbreaks in humans (caused by SARS-CoV-1 and MERS-COV).
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- 2020
48. STRUMENTI DI REALTÀ VIRTUALE NELL’INSEGNAMENTO DELL’ANATOMIA PER I LAUREANDI IN SCIENZE SPORTIVE: UNO STUDIO PILOTA VIRTUAL REALITY TOOLS IN TEACHING GROSS ANATOMY TO SPORTS SCIENCE UNDER- GRADUATED STUDENT: A PILOT STUDY
- Author
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Papa, Veronica, Alberto, Saracco, and Mauro, Vaccarezza
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- 2020
49. Translating Evidence from Clonal Hematopoiesis to Cardiovascular Disease: A Systematic Review
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Luisa Marracino, Gianluca Campo, Francesca Fortini, Mauro Vaccarezza, Paola Rizzo, Francesco Vieceli Dalla Sega, and Veronica Papa
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clonal hematopoiesis of indeterminate potential, driver mutation, DNMT3A, TET2, atherosclerosis ,clonal hematopoiesis of indeterminate potential ,lcsh:Medicine ,Context (language use) ,Review ,Disease ,030204 cardiovascular system & hematology ,medicine.disease_cause ,NO ,03 medical and health sciences ,0302 clinical medicine ,medicine ,coronary heart disease ,030304 developmental biology ,0303 health sciences ,Mutation ,TET2 ,business.industry ,lcsh:R ,driver mutation ,Hematopoietic stem cell ,Cancer ,General Medicine ,medicine.disease ,Haematopoiesis ,medicine.anatomical_structure ,Immunology ,DNMT3A ,Stem cell ,atherosclerosis ,business ,Indeterminate - Abstract
Some random mutations can confer a selective advantage to a hematopoietic stem cell. As a result, mutated hematopoietic stem cells can give rise to a significant proportion of mutated clones of blood cells. This event is known as “clonal hematopoiesis.” Clonal hematopoiesis is closely associated with age, and carriers show an increased risk of developing blood cancers. Clonal hematopoiesis of indeterminate potential is defined by the presence of clones carrying a mutation associated with a blood neoplasm without obvious hematological malignancies. Unexpectedly, in recent years, it has emerged that clonal hematopoiesis of indeterminate potential carriers also have an increased risk of developing cardiovascular disease. Mechanisms linking clonal hematopoiesis of indeterminate potential to cardiovascular disease are only partially known. Findings in animal models indicate that clonal hematopoiesis of indeterminate potential-related mutations amplify inflammatory responses. Consistently, clinical studies have revealed that clonal hematopoiesis of indeterminate potential carriers display increased levels of inflammatory markers. In this review, we describe progress in our understanding of clonal hematopoiesis in the context of cancer, and we discuss the most recent findings linking clonal hematopoiesis of indeterminate potential and cardiovascular diseases.
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- 2020
50. New Promises and Challenges on Inflammation and Atherosclerosis: Insights From CANTOS and CIRT Trials
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Mauro Vaccarezza and Raymond D. Palmer
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cardiovascular risk ,Acute coronary syndrome ,Opinion ,lcsh:Diseases of the circulatory (Cardiovascular) system ,acute coronary syndrome, atherosclerosis, cardiovascular risk, ischemic heart disease, vascular disease ,business.industry ,Vascular disease ,Inflammation ,vascular disease ,Cardiovascular Medicine ,medicine.disease ,Bioinformatics ,ischemic heart disease ,NO ,acute coronary syndrome ,lcsh:RC666-701 ,Medicine ,medicine.symptom ,atherosclerosis ,Cardiology and Cardiovascular Medicine ,business - Published
- 2019
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