Publications by authors named "Giulia Canali"

5 Publications

  • Page 1 of 1

Gastric microbiota composition in patients with corpus atrophic gastritis.

Dig Liver Dis 2021 Jun 8. Epub 2021 Jun 8.

Medical-Surgical Department of Clinical Sciences and Translational Medicine, Sant'Andrea Hospital, University Sapienza, Rome, Italy. Electronic address:

Background: In corpus atrophic gastritis (CAG), hypochlorhydria makes plausible the overgrowth of intragastric bacteria, whose role in gastric carcinogenesis is under debate.

Aims: To characterize the antrum/corpus composition of the gastric bacterial microbiota in CAG patients compared to controls without CAG.

Methods: A cross-sectional monocentric study on consecutive patients with known histological diagnosis of CAG undergoing gastroscopy for gastric cancer surveillance and patients without CAG undergoing gastroscopy for dyspepsia or anemia (108 biopsies from 55 patients, median age 61.5). Genomic DNA from one antral and one corpus biopsy from each case (n = 23) and control (n = 32) was extracted. Gastric microbiota was assessed by sequencing hypervariable regions of the 16SrRNA gene.

Results: Bacterial abundance and diversity were significantly lower in CAG cases than in controls (p < 0.001). Firmicutes were more frequent in cases, Bacteroidetes and Fusobacteria in controls (p < 0.0001). Streptococcaceae were more abundant in cases (p < 0.0001), Prevotellaceae in controls (p < 0.0001). The genus Streptococcus was positively correlated with severe OLGA/OLGIM stages linked to a higher risk of gastric cancer.

Conclusion: Gastric bacterial microbiota in CAG showed a reduced abundance and complexity but was characterized by higher colonization of Firmicutes, in particular Streptococcus, increased in subjects with severe atrophy/metaplasia stages at higher risk of gastric cancer.
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June 2021

Laparoscopic versus open rectal resection: a 1:2 propensity score-matched analysis of oncological adequateness, short- and long-term outcomes.

Int J Colorectal Dis 2021 Apr 22;36(4):801-810. Epub 2021 Jan 22.

Department of Medical Surgical Science and Translational Medicine, Sapienza University of Rome, Sant'Andrea Hospital, Via di Grottarossa 1035-39, 00189, Rome, Italy.

Background: Laparoscopic resections for rectal cancer are routinely performed in high-volume centres. Despite short-term advantages have been demonstrated, the oncological outcomes are still debated. The aim of this study was to compare the oncological adequateness of the surgical specimen and the long-term outcomes between open (ORR) and laparoscopic (LRR) rectal resections.

Methods: Patients undergoing laparoscopic or open rectal resections from January 1, 2013, to December 31, 2019, were enrolled. A 1:2 propensity score matching was performed according to age, sex, BMI, ASA score, comorbidities, distance from the anal verge, and clinical T and N stage.

Results: Ninety-eight ORR were matched to 50 LRR. No differences were observed in terms of operative time (224.9 min. vs. 230.7; p = 0.567) and postoperative morbidity (18.6% vs. 20.8%; p = 0.744). LRR group had a significantly earlier soft oral intake (p < 0.001), first bowel movement (p < 0.001), and shorter hospital stay (p < 0.001). Oncological adequateness was achieved in 85 (86.7%) open and 44 (88.0%) laparoscopic resections (p = 0.772). Clearance of the distal (99.0% vs. 100%; p = 0.474) and radial margins (91.8 vs. 90.0%, p = 0.709), and mesorectal integrity (94.9% vs. 98.0%, p = 0.365) were comparable between groups. No differences in local recurrence (6.1% vs.4.0%, p = 0.589), 3-year overall survival (82.9% vs. 91.4%, p = 0.276), and disease-free survival (73.1% vs. 74.3%, p = 0.817) were observed.

Conclusions: LRR is associated with good postoperative results, safe oncological adequateness of the surgical specimen, and comparable survivals to open surgery.
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April 2021

The Water Content Drives the Susceptibility of the Lichen and the Moss sp. to High Ozone Concentrations.

Biology (Basel) 2020 Apr 27;9(5). Epub 2020 Apr 27.

Department of Life Sciences, University of Siena and Italy, 53100 Siena, Italy.

The aim of this study was to evaluate the tolerance of lichens () and mosses ( sp.) to short-term (1 h), acute (1 ppm) O fumigation under different hydration states (dry, <10% water content, metabolism almost inactive; wet, >200% water content, metabolism fully active). We hypothesized that stronger damage would occur following exposure under wet conditions. In addition, we checked for the effect of recovery (1 week) after the exposure. Ozone fumigation negatively affected the content of chlorophyll only in wet samples, but in the moss, such a difference was no longer evident after one week of recovery. Photosynthetic efficiency was always impaired by O exposure, irrespective of the dry or wet state, and also after one week of recovery, but the effect was much stronger in wet samples. The antioxidant power was increased in wet moss and in dry lichen, while a decrease was found for wet lichens after 1 week. Our results confirm that the tolerance to O of lichens and mosses may be determined by their low water content, which is the case during the peaks of O occurring during the Mediterranean summer. The role of antioxidant power as a mechanism of resistance to high O concentrations needs to be further investigated.
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April 2020

Medication adherence by Palestine refugees living in Jordan who have diabetes: a cross-sectional study.

Lancet 2018 02 21;391 Suppl 2:S13. Epub 2018 Feb 21.

United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA), Amman, Jordan.

Background: The United Nations Relief and Works Agency for Palestine Refugees in the Near East (UNRWA) estimated that in 2016, 11% of Palestine refugees older than 40 years living in Jordan were diagnosed with diabetes and that the disease is controlled in only 45% of Palestine refugees with diabetes. As medication adherence is one of the most important modifiable self-care behaviours to achieve adequate metabolic control, the aims of this study were to measure medication adherence and to review the factors associated with different levels of medication adherence in patients with diabetes.

Methods: This cross-sectional study was a survey of patients with type 1 and type 2 diabetes who attended medical care at the UNRWA Amman New Camp health centre in Jordan. Medication adherence was measured using the Morisky Medication Adherence Scale (MMAS-8), and results were used as outcome variable. Data on factors associated with adherence were collected using a pre-tested patient questionnaire and patients' electronic records, and these factors were used as explanatory variables. Logistic regression analysis of each explanatory variable against the outcome variable was done to estimate crude odds ratios. Data were analysed using STATA version 13.0.

Findings: 763 patients were included in the study. 557 (73%) patients did not adhere to their diabetes drug therapy. Univariate analysis showed that the factors associated with non-adherence were: the use of multiple providers for diabetes care (crude odds ratio 0·51, 95% CI 0·28-0·91) and diabetes drugs (0·22, 0·09-0·56); satisfaction with the quality of UNRWA's diabetes care (4·51, 1·05-19·45) and with the explanation of the disease and treatment presented by UNRWA's health professionals (2·72, 1·24-5·29); and trust in UNRWA's health staff (3·61, 1·4-9·32).

Interpretation: Decreased odds of adherence was associated with the use of multiple providers of care and diabetes medication, whereas increased odds of adherence correlated with full satisfaction with the quality of care, explanation of the disease, and treatment and trust in UNRWA health-care staff. These findings show the importance of health-system-related factors in affecting adherence to drug therapy in a population of Palestinian refugees with diabetes who accessed UNRWA health care in Jordan.

Funding: UNRWA.
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February 2018

Anorectal melanoma: a rare aggressive type of melanoma.

ANZ J Surg 2017 05;87(5):421-422

Medical and Surgical Sciences and Translational Medicine, Faculty of Medicine and Psychology "Sapienza", St. Andrea Hospital, Rome, Italy.

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May 2017