Valentina Siciliano

Valentina Siciliano


Research Focus & Metrics

Academic Career Length

5Years (2022-Present)

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

Representative Publications

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4 May 2023 in Life
Verified
Journal Article
Open access
PDF file
VSValentina Siciliano
Valentina Siciliano
RPRosa Anna Passerotto
Rosa Anna Passerotto
MCMarta Chiuchiarelli
Marta Chiuchiarelli
GLGabriele Maria Leanza
Gabriele Maria Leanza
Veronica OjettiVeronica Ojetti
Veronica Ojetti
Multidrug-resistant Staphylococcus epidermidis (MDRSE) is responsible for difficult-to-treat infections in humans and hospital-acquired-infections. This review discusses the epidemiology, microbiology, diagnosis, and treatment of MDRSE infection and identifies knowledge gaps. By using the search term “pan resistant Staphylococcus epidermidis” OR “multi-drug resistant Staphylococcus epidermidis” OR “multidrug-resistant lineages of Staphylococcus epidermidis”, a total of 64 records have been identified from various previously published studies. The proportion of methicillin resistance in S. epidermidis has been reported to be as high as 92%. Several studies across the world have aimed to detect the main phylogenetic lineages and antibiotically resistant genes through culture, mass spectrometry, and genomic analysis. Molecular biology tools are now available for the identification of S. epidermidis and its drug resistance mechanisms, especially in blood cultures. However, understanding the distinction between a simple colonization and a bloodstream infection (BSI) caused by S. epidermidis is still a challenge for clinicians. Some important parameters to keep in mind are the number of positive samples, the symptoms and signs of the patient, the comorbidities of the patient, the presence of central venous catheter (CVC) or other medical device, and the resistance phenotype of the organism. The agent of choice for empiric parenteral therapy is vancomycin. Other treatment options, depending on different clinical settings, may include teicoplanin, daptomycin, oxazolidinones, long-acting lipoglycopeptides, and ceftaroline. For patients with S. epidermidis infections associated with the presence of an indwelling device, assessment regarding whether the device warrants removal is an important component of management. This study provides an overview of the MDRSE infection. Further studies are needed to explore and establish the most correct form of management of this infection.

29 September 2023 in Antibiotics
Verified
Journal Article
Open access
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AGAngelo Del Gaudio
Angelo Del Gaudio
CCCarlo Covello
Carlo Covello
FVFederica Di Vincenzo
Federica Di Vincenzo
SLSara Sofia De Lucia
Sara Sofia De Lucia
TMTeresa Mezza
Teresa Mezza
ENEnrico Celestino Nista
Enrico Celestino Nista
Acute pancreatitis (AP) is an acute inflammation of the pancreas caused by the activation of digestive enzymes in the pancreatic tissue. The main causes of AP are cholelithiasis and alcohol abuse; less commonly, it can be caused by drugs, with a prevalence of up to 5%. Causal associations between drugs and pancreatitis are largely based on case reports or case series with limited evidence. We reviewed the available data on drug-induced AP, focusing on antimicrobial drugs and antivirals, and discussed the current evidence in relation to the classification systems available in the literature. We found 51 suspected associations between antimicrobial and antiviral drugs and AP. The drugs with the most evidence of correlation are didanosine, protease inhibitors, and metronidazole. In addition, other drugs have been described in case reports demonstrating positive rechallenge. However, there are major differences between the various classifications available, where the same drug being assigned to different probability classes. It is likely that the presence in multiple case reports of an association between acute pancreatitis and a drug should serve as a basis for conducting prospective randomized controlled trials to improve the quality of the evidence.

Verified
Journal Article
Open access
PDF file
ASAngela Saviano
Angela Saviano
APAnnalisa Potenza
Annalisa Potenza
VSValentina Siciliano
Valentina Siciliano
CPCarmine Petruzziello
Carmine Petruzziello
CTClaudia Tarli
Claudia Tarli
Veronica OjettiVeronica Ojetti
Veronica Ojetti
Background: COVID-19 disease, which typically presents with respiratory symptoms, can trigger intestinal inflammation through SARS-CoV-2 replication in the gastrointestinal tract. Supplementation with probiotics may have beneficial effects on gut inflammation due to their analgesic and anti-inflammatory properties. The primary objective of our study was to evaluate the efficacy of a mix of three probiotic strains (Bifidobacterium lactis LA 304, Lactobacillus salivarius LA 302, and Lactobacillus acidophilus LA 201; Lactibiane Iki®) in the reduction in fecal calprotectin in patients with COVID-19 pneumonia, compared to a control group. The secondary aim was to evaluate the reduction in oxygen support and length of hospital stay in patients taking the probiotic mix. Patients and Methods: We conducted a prospective randomized controlled trial at Fondazione Policlinico Gemelli, Rome. We enrolled patients with COVID-19 interstitial pneumonia. One group received the probiotic mix twice a day for 10 days in addition to the standard COVID-19 therapy, and a second group received standard COVID-19 therapy without probiotics. We administered oxygen support (through Ventimask or Optiflow®) on days (D) 1, 3, 5, 7 and 10, and the level of fecal calprotectin between D3–D5 and D7–D10. Results: A total of 80 patients (44 M/36 F; mean age: 59.8 ± 17.3) were enrolled with a mean value of calprotectin at enrollment of 140 mg/dl. At D7–10, the probiotic group showed a 35% decrease in fecal calprotectin compared to 16% in the control group, a decrease in C-reactive protein (CRP) of 72.7% compared to 62%, and a slight but not significant decrease in oxygen support compared to the control group. Conclusion : Supplementation with a mix of probiotics for 10 days in patients with COVID-19 interstitial pneumonia significantly reduces inflammatory markers.

20 February 2024 in Pathogens
Verified
Journal Article
Open access
PDF file
VSValentina Siciliano
Valentina Siciliano
FSFlavio Sangiorgi
Flavio Sangiorgi
PVPierluigi Del Vecchio
Pierluigi Del Vecchio
LVLayla Vahedi
Layla Vahedi
MGMaya Manuela Gross
Maya Manuela Gross
Veronica OjettiVeronica Ojetti
Veronica Ojetti
Long-acting lipoglycopeptides (LGPs), such as dalbavancin and oritavancin, are semisynthetic antibiotics known for their strong effectiveness against a wide array of Gram-positive bacteria. This includes Staphylococcus aureus, both methicillin-sensitive (MSSA) and methicillin-resistant (MRSA) strains, coagulase-negative Staphylococci (CoNS), streptococci, and vancomycin-sensitive Enterococcus faecalis. A literature search was conducted on PubMed and on ClinicalTrials.gov to identify articles published until July 2023 investigating the use of oritavancin and dalbavancin in clinical practice. The review included case reports, case series, observational studies, and clinical studies. Although more consistent data are needed, LGPs seem to be a good alternative that may provide a quicker hospital discharge and reduce long-term intravenous access and therapy. This is attributed to their unique pharmacologic and pharmacokinetic characteristics. More quality data (i.e., number of patients treated with clinical success) are needed before clinicians may use these therapies more widely.