Giuseppe Nunnari

Prof. Dr. Giuseppe Nunnari

Unit of Infection Disease, Department of Clinical and Experimental Medicine, University of Messina, Piazza Pugliatti, 1, 98122 Messina, Italy

Research Focus & Metrics

Academic Career Length

14Years (2013-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

View All Publications
25 July 2024 in Epidemiologia
Verified
Journal Article
Open access
PDF file
Luigi La ViaLuigi La Via
Luigi La Via
GSGiuseppe Sangiorgio
Giuseppe Sangiorgio
SSStefania Stefani
Stefania Stefani
Andrea MarinoAndrea Marino
Andrea Marino
GNGiuseppe Nunnari
Giuseppe Nunnari
Antonino ManiaciAntonino Maniaci
Antonino Maniaci
A dysregulated host response to infection causes organ dysfunction in sepsis and septic shock, two potentially fatal diseases. They continue to be major worldwide health burdens with high rates of morbidity and mortality despite advancements in medical care. The goal of this thorough review was to present a thorough summary of the current body of knowledge about the prevalence of sepsis and septic shock worldwide. Using widely used computerized databases, a comprehensive search of the literature was carried out, and relevant studies were chosen in accordance with predetermined inclusion and exclusion criteria. A narrative technique was used to synthesize the data that were retrieved. The review’s conclusions show how widely different locations and nations differ in terms of sepsis and septic shock’s incidence, prevalence, and fatality rates. Compared to high-income countries (HICs), low- and middle-income countries (LMICs) are disproportionately burdened more heavily. We talk about risk factors, comorbidities, and difficulties in clinical management and diagnosis in a range of healthcare settings. The review highlights the need for more research, enhanced awareness, and context-specific interventions in order to successfully address the global burden of sepsis and septic shock.

5 May 2025 in Epidemiologia
Verified
Journal Article
Open access
PDF file
Andrea MarinoAndrea Marino
Andrea Marino
Antonino ManiaciAntonino Maniaci
Antonino Maniaci
MLMario Lentini
Mario Lentini
SRSalvatore Ronsivalle
Salvatore Ronsivalle
GNGiuseppe Nunnari
Giuseppe Nunnari
Luigi La ViaLuigi La Via
Luigi La Via
Background/Objectives: This narrative review provided a broad synthesis of recent epidemiological trends, priority resistance mechanisms, and public health implications of multidrug-resistant (MDR) bacteria. We focused on the most clinically significant MDR pathogens, regional differences in resistance, and the effectiveness of containment strategies. Our goal was to synthesize current knowledge and propose research directions. Methods: Through comprehensive analysis of epidemiological studies, surveillance reports, clinical trials, and meta-analyses, we present a detailed assessment of the evolving landscape of antimicrobial resistance across both developed and developing nations. The review encompasses data from 187 countries, analyzing over 2500 published studies and reports from major health organizations. Results: Our findings reveal a concerning 43% increase in multidrug-resistant infections globally, with particularly sharp rises in healthcare-associated infections (67% increase) and community-acquired infections (38% increase) in regions with high antibiotic misuse. The analysis specifically focuses on critical pathogens, including methicillin-resistant Staphylococcus aureus (MRSA), extended-spectrum β-lactamase-producing Enterobacteriaceae (ESBL), and carbapenem-resistant Enterobacteriaceae (CRE), documenting their prevalence, transmission patterns, and treatment outcomes. Economic impact assessments indicate annual global healthcare costs exceeding USD 100 billion due to resistant infections. The review identifies significant gaps in current surveillance systems, particularly in low- and middle-income countries, and proposes standardized approaches for monitoring and containment strategies. We evaluate the effectiveness of various antimicrobial stewardship programs, documenting success rates and implementation challenges across different healthcare settings. Conclusions: The analysis concludes with evidence-based recommendations for policy reforms, research priorities, and international collaboration frameworks necessary to address this growing global health crisis. Our findings highlighted the importance of strengthening stewardship efforts, proposing novel diagnostics and therapeutic interventions, and addressing inequities in access to care and data across different countries.

27 December 2018 in Dermatologic Therapy
Verified
Journal Article
Closed access
PDF file
Manuela CeccarelliManuela Ceccarelli
Manuela Ceccarelli
Emmanuele Venanzi RulloEmmanuele Venanzi Rullo
Emmanuele Venanzi Rullo
Mario VaccaroMario Vaccaro
Mario Vaccaro
AFAlessio Facciolà
Alessio Facciolà
FDFrancesco D'Aleo
Francesco D'Aleo
CGClaudio Guarneri
Claudio Guarneri


26 November 2020 in Antioxidants
Verified
Journal Article
Open access
PDF file
Massimiliano BerrettaMassimiliano Berretta
Massimiliano Berretta
Vincenzo QuagliarielloVincenzo Quagliariello
Vincenzo Quagliariello
NMNicola Maurea
Nicola Maurea
RFRaffaele Di Francia
Raffaele Di Francia
SSSaman Sharifi
Saman Sharifi
MMMonica Montopoli
Monica Montopoli
Severe disease commonly manifests as a systemic inflammatory process. Inflammation is associated withthe enhanced production of reactive oxygen and nitrogen species and with a marked reduction in the plasma concentrations of protective antioxidant molecules. This imbalance gives rise to oxidative stress, which is greater in patients with more severe conditions such as sepsis, cancer, cardiovascular disease, acute respiratory distress syndrome, and burns. In these patients, oxidative stress can trigger cell, tissue, and organ damage, thus increasing morbidity and mortality. Ascorbic acid (ASC) is a key nutrient thatserves as an antioxidant and a cofactor for numerous enzymatic reactions. However, humans, unlike most mammals, are unable to synthesize it. Consequently, ASC must be obtained through dietary sources, especially fresh fruit and vegetables. The value of administering exogenous micronutrients, to reestablish antioxidant concentrations in patients with severe disease, has been recognized for decades. Despite the suggestion that ASC supplementation may reduce oxidative stress and prevent several chronic conditions, few large, randomized clinical trials have tested it in patients with severe illness. This article reviews the recent literature on the pharmacological profile of ASC and the role of its supplementation in critically ill patients.

Verified
Journal Article
Open access
PDF file
Andrea MarinoAndrea Marino
Andrea Marino
EAEgle Augello
Egle Augello
Stefano StracquadanioStefano Stracquadanio
Stefano Stracquadanio
CBCarlo Maria Bellanca
Carlo Maria Bellanca
FCFederica Cosentino
Federica Cosentino
GNGiuseppe Nunnari
Giuseppe Nunnari
Acinetobacter baumannii represents a significant concern in nosocomial settings, particularly in critically ill patients who are forced to remain in hospital for extended periods. The challenge of managing and preventing this organism is further compounded by its increasing ability to develop resistance due to its extraordinary genomic plasticity, particularly in response to adverse environmental conditions. Its recognition as a significant public health risk has provided a significant impetus for the identification of new therapeutic approaches and infection control strategies. Indeed, currently used antimicrobial agents are gradually losing their efficacy, neutralized by newer and newer mechanisms of bacterial resistance, especially to carbapenem antibiotics. A deep understanding of the underlying molecular mechanisms is urgently needed to shed light on the properties that allow A. baumannii enormous resilience against standard therapies. Among the most promising alternatives under investigation are the combination sulbactam/durlobactam, cefepime/zidebactam, imipenem/funobactam, xeruborbactam, and the newest molecules such as novel polymyxins or zosurabalpin. Furthermore, the potential of phage therapy, as well as deep learning and artificial intelligence, offer a complementary approach that could be particularly useful in cases where traditional strategies fail. The fight against A. baumannii is not confined to the microcosm of microbiological research or hospital wards; instead, it is a broader public health dilemma that demands a coordinated, global response.