Seroprevalence of SARS-CoV-2 IgG antibodies among workers in the University Hospital of Guadeloupe.

OBJECTIVE: The Covid-19 pandemic is the major global health crisis of our time. The purpose of this study is to estimate the seroprevalence of IgG against SARS-CoV-2 among workers in the University Hospi-tal of Guadeloupe and to assess this seroprevalence in asymptomatic personnel as well as the proportion of asymptomatic agents among seropositive agents. SETTING AND METHODS: We carried out a seroprevalence study in the staff of the University Hospital of Guadeloupe. The presence of IgG anti SARS-CoV-2 was determined by a micro-particulate immunolo-gical assay using the chemiluminescence technique (CMIA, Architect i2000SR, Abbott). Data on the previous presence of symptoms sugge-stive of COVID-19, were identified using a standardized questionnaire. Statistical analyses were performed using Epi Info® software. RESULTS: From 07/05/2020 to 28/10/2020, 892 serologies were performed, 45 of which were positive for SARS-CoV-2 : a prevalence of 5.0% [95% CI: 3.6% - 6.5%]. Seroprevalence was 1.5% [95% CI: 0.6% - 2.3%] among agents who reported being asymptomatic. Among seropositive individuals, 24.4% [95% CI:12% - 36%] was totally asymptomatic. CONCLUSION: Our results highlight the importance of continuing seroprevalence studies for SARS-CoV-2 in hospital staff, which can provide important information on the level of exposure in healthcare workers and asymptomatic transmission of SARS-CoV-2 in clinical set-tings.

Non-adherence to Mediterranean diet and synergy with lifestyle habits in the occurrence of breast cancer: a case-control study in Italy.

OBJECTIVE: The aim of this study was to assess the synergistic effect of non-adherence to the Mediterranean Diet (MD) and lifestyle habits on the occurrence of breast cancer (BC). PATIENTS AND METHODS: A case-control study was carried out from September 2018 to February 2019 at the Teaching Hospital "Umberto I" in Rome. A Food Frequency Questionnaire was used for assessing the level of adherence to MD, the IPAQ Questionnaire to measure physical activity, and AUDIT-C to estimate alcohol consumption. The possible interaction between risk factors was tested using the synergism index. RESULTS: A total of 94 cases and 88 controls were enrolled (median age 55.8 for cases and 57.9 for controls). The MD Score over 6 was associated with low odds of having breast cancer (OR = 0.29; 95% CI: 0.12-0.69). There is a clear indication for the additivity and synergism between non-adherence to MD and many risk factors on the occurrence of BC: current smoker (S = 2.02; 95% CI 0.62-8.07), physical inactivity (S = 2.14; 95% CI 0.71 2-8.28) and alcohol consumption (S = 3.02; 95% CI 0.91-12.95). CONCLUSIONS: Primary prevention of BC can benefit from intervention targeting nutritional and lifestyle factors that act synergistically.

Returning to work after breast cancer: A systematic review of reviews.

BACKGROUND: Due to improvements in breast cancer diagnosis and treatment, the healthcare system faces a growing number of cancer survivors. Breast cancer survivors experience many difficulties when returning to work, including discrimination at work and lack of support by employers and colleagues. OBJECTIVE: To point out the knowledge in literature up to date about return to work (RTW) after breast cancer, the factors influencing it and the interventions to facilitate it. METHODS: A literature search was conducted in January 2017 using the databases Medline (PubMed) and Scopus. Studies were included if they analyzed the problem of RTW in women treated for breast cancer. RESULTS: Twenty-six articles met the inclusion criteria. The studies were divided into four themes: factors facilitating or impeding RTW; interventions to enhance RTW; lived experiences of RTW; economic aspects related to cancer survivors and RTW. CONCLUSIONS: The heterogeneity of the interventions suggests the need for a better definition of the concept of RTW. To compare interventions, studies should use a rigorous approach and better outcome measures should be identified to evaluate RTW.

Evaluation of cardiovascular risk profile: a comparative analysis between CUORE algorithm and the Framingham risk scores.

OBJECTIVE: Coronary heart diseases (CHD) are the leading cause of premature death and loss of disability adjusted life years in Europe. In order to implement appropriate health interventions as preventive tools, it is necessary to understand the epidemiological stratification of cardiovascular risk and the specific situation of each individual reality. This study investigates the reliability of two algorithms used to assess cardiovascular risk: the Framingham algorithm and the CUORE algorithm. PATIENTS AND METHODS: Data specific on patients of General Practitioners working in the Province of Rome were considered, and a total of 996 subjects of both genders were evaluated. The goodness of fit of the regression model was evaluated using the R2 value. RESULTS: The inferential analysis showed that the R2 value of the simple linear regression between CHD risk calculated according to the CUORE method (dependent variable) and CHD risk calculated according the Framingham method (independent variable), was initially equal to 0.350, and rose to 0.732 when the independent variables "Gender" and "Age" were added, thereby creating a multivariate regression. The R2 of the multivariate regression was 0.478 when using CHD Framingham as the dependent variable and CHD CUORE as the independent variable. CONCLUSIONS: It emerged that the CUORE score was less reliable than the Framingham risk score; in fact, in the multiple linear regression model, the coefficient of determination was greater when the independent variable was the Framingham scale for CHD risk.

Bactrocera oleae-induced olive VOCs routing mate searching in Psyttalia concolor males: impact of associative learning.

Olfaction is a key sense routing foraging behaviour in parasitoids. Preferences for food, mate and host stimuli can be innate in parasitic wasps. Alternatively, learning-mediated mechanisms play a crucial role. Females of the braconid parasitoid Psyttalia concolor exploit olfactory cues arising from tephritid hosts and related microhabitats. However, little is known on the olfactory stimuli routing males searching for mates. In this study, we focused on the attractiveness of Bactrocera oleae-induced olive volatiles towards P. concolor males. Furthermore, we evaluated learning occurrence in virgin males, when trained for selected unattractive volatile organic compounds (VOCs) associated with mate rewards. (E)-ß-Ocimene, α-pinene and limonene attracted virgin males in Y-tube bioassays. Unattractive VOCs evoked positive chemotaxis after associative learning training. P. concolor males exposed to VOCs during a successful or unsuccessful mating, showed short-term preference for these VOCs (<1 h). However, memory consolidation was strictly dependent on reward value. Indeed, males experiencing a successful mating showed a fast consolidation into protein dependent long-term memory, appearing after 24 h. On the other hand, males experiencing a less valuable training experience (i.e. unsuccessful courtship), did not show consolidated memory after 24 h. Overall, our findings suggest that P. concolor virgin males may exploit VOCs from the host microhabitat to boost their mate searching activity, thus their reproductive success. However, since learning is a costly process, P. concolor males retained durable memories just in presence of a valuable reward, thus avoiding maladaptive behaviours.

Fumigant and Repellent Activity of Limonene Enantiomers Against Tribolium confusum du Val.

The use of pesticides, as carried out in the last 50 years, caused several negative environmental and human health consequences, leading to the development of alternative techniques to control pests, such as the use of compounds of plant origin. In this study, we assessed the fumigant and repellent activity of both the enantiomers of limonene, a monoterpene usually found in many plant species, against Tribolium confusum du Val. We tested both molecules at different doses, air temperatures, and in absence and presence of flour. R-(+)-limonene resulted more effective than S-(-)-limonene; indeed, it was able to reach 100% of efficacy at a concentration of 85 mg/L air when tested at different temperatures without flour. Data showed a positive relationship between efficacy and temperature, and a negative effect of the presence of debris on the bioactivity of limonene. Furthermore, repellency trials reported a higher activity of R-(+)-limonene compared to the other enantiomer.

Population Dynamics and Temperature-Dependent Development of Chrysomphalus aonidum (L.) to Aid Sustainable Pest Management Decisions.

The increasing worldwide trades progressively led to decreased impact of natural barriers on wild species movement. The exotic scale Chrysomphalus aonidum (L.) (Hemiptera: Diaspididae), recently reported on citrus in southern Italy, may represent a new threat to Mediterranean citriculture. We studied C. aonidum population dynamics under field conditions and documented its development under various temperatures. To enable describing temperature-dependent development through the use of linear and non-linear models, low temperature thresholds and thermal constants for each developmental stage were estimated. Chrysomphalus aonidum was able to perform four generations on green parts (leaves, sprouts) of citrus trees and three on fruits. In addition, an overall higher population density was observed on samples collected in the southern part of the tree canopy. Temperature had a significant effect on the developmental rate; female needed 625 degree days (DD) to complete its development, while male needed 833 DD. The low threshold temperatures, together with data from population dynamics, demonstrated that C. aonidum is able to overwinter as second instar and as an adult. The results obtained, validated by those collected in the field, revealed few differences between predicted and observed dates of first occurrence of each C. aonidum instar in citrus orchards. Data on C. aonidum phenology and the definition of the thermal parameters (lower and upper threshold temperatures, optimum temperature, and the thermal constant) by non-linear models could allow the estimation of the occurrence in the field of each life stage and would be helpful in developing effective integrated control strategies.

[Cervical pregnancy: an obstetric emergency. A clinical case]. / La gravidanza cervicale: catastrofe ostetrica. Caso clinico.

Cervical implantation could develop in three different ways. The gestational sac can grow up to external os and interruption may simulate an abnormal menstruation. Theoretically the gestational sac could reach the uterine cavity, with a normal evolution of the pregnancy, even if the implantation of the placenta would be on internal uterine os. Lastly, the ectopic gestational sac developes all in cervical channel with an "obstetrical catastrophe". The incidence of cervical pregnancy presents great differences between authors, from 1:1,000 to 1:95,000 pregnancies; this is due to the variability of diagnostic criteria. A 36 year-old woman, para 1001, came to the emergency unit with painless vaginal bleeding. She was pregnant at 8 weeks of amenorrhoea, and previously undergone a cesarean section. The portio was swollen and bluewish, the external os was opened. The uterus was slightly increased, expecially in the peri-isthmic area; no adnexal mass. The urinary hCG was < 15,000 I.U. An ultrasound examination showed the endometrium in decidual transformation, without identification of embrional or extraembrional structures. The diagnosis was retained miscarriage. During the cervical dilatation, an impressive and uncontrollable haemorrhage occurred. It was decided to perform a total hysterectomy via laparotomy. The macroscopic examination of the uterus showed the cavity empty and the sopravaginal cervical area enlarged, invaded by an ectopic trophoblastic proliferation. The majority of obstetricians will never see a cervical pregnancy; the minority who has to treat this pathology wishes to have never seen one.