A novel methodology for epidemic risk assessment of COVID-19 outbreak.

We propose a novel data-driven framework for assessing the a-priori epidemic risk of a geographical area and for identifying high-risk areas within a country. Our risk index is evaluated as a function of three different components: the hazard of the disease, the exposure of the area and the vulnerability of its inhabitants. As an application, we discuss the case of COVID-19 outbreak in Italy. We characterize each of the twenty Italian regions by using available historical data on air pollution, human mobility, winter temperature, housing concentration, health care density, population size and age. We find that the epidemic risk is higher in some of the Northern regions with respect to Central and Southern Italy. The corresponding risk index shows correlations with the available official data on the number of infected individuals, patients in intensive care and deceased patients, and can help explaining why regions such as Lombardia, Emilia-Romagna, Piemonte and Veneto have suffered much more than the rest of the country. Although the COVID-19 outbreak started in both North (Lombardia) and Central Italy (Lazio) almost at the same time, when the first cases were officially certified at the beginning of 2020, the disease has spread faster and with heavier consequences in regions with higher epidemic risk. Our framework can be extended and tested on other epidemic data, such as those on seasonal flu, and applied to other countries. We also present a policy model connected with our methodology, which might help policy-makers to take informed decisions.

Seroprevalence and risk factors of Toxoplasma gondii infection in women with recurrent fetal loss from the province of Khyber Pakhtunkhwa, Pakistan.

BACKGROUND: In women with a bad obstetric history (BOH), infection is an established cause of recurrent fetal loss. A common infecting agent is the protozoan parasite Toxoplasma gondii (T. gondii). The aim of this study was to measure the prevalence of toxoplasmosis in women with recurrent fetal loss from the Khyber Pakhtunkhwa province of Pakistan. METHODS: The study included 360 females aged 16-40 years, of which 180 had a bad obstetric history (study group) and the other 180 had no such history (control group). Blood serum samples were tested for toxoplasma IgM antibodies by Enzyme Linked Immunosorbent Assay and for toxoplasma IgG antibodies using an Immunochromatographic technique. RESULTS: The overall seroprevalence of toxoplasma infection in study group females was 40.6% and in control group females it was 7.2%. Specifically, IgM prevalence was 12.8% in the study group and 1.1% in the control group. IgG prevalence was 23.9% in the study group and 6.1% in the control group. IgM and IgG combined prevalence was 3.9% in the study group cases. There is a statistically significant association between BOH and seropositivity for T. gondii (p < 0.0001, Chi square test). Various risk factors associated with T. gondii seroprevalence in study and control groups were analyzed. CONCLUSION: The seroprevalence of toxoplasmosis was significantly higher in women with a bad obstetric history compared to those with no such history. Associated risk factors had no significant effects on the results.

Parietal interhemispheric transfalcine transtentorial approach for posterior incisural space lesions: from the lab to the operative room.

The operative approach to the posterior incisural space is challenging because of its deep location, the surrounding eloquent areas, and the intimate relationship with the deep veins. Several approaches have been proposed to manage the lesions in this region: supratentorial, infratentorial and a combination of them. Brain retraction, injury to the occipital lobe and corpus callosum, and venous bleeding are the principle drawbacks of these routes. We performed anatomical dissection study using 10 embalmed human cadaver specimens injected with colored latex exploring a different route, parietal interhemispheric transfalcine transtentorial (PITT). Then we used a PITT approach on two patients with posterior incisural space (PIS) lesions. The PITT approach led to successful and safe complete removal of PIS lesions in our cases. No complications were reported. The present approach could be a valuable option in case of PIS lesions, especially those associated with downward displacement of the deep venous complex; thanks to the gravity it reduce the complications related to the occipital lobe retraction and manipulation. Moreover, cutting the superior-anterior edge of the tentorium, the sub-tentorial space could be reached.

Effects of nutraceuticals on quality of life and sexual function of perimenopausal women.

PURPOSE: The aim of the study was to evaluate the effects of nutraceuticals containing Equol, Resveratrol, Quecitine and Passiflora (Zemiar®, Avantgarde, Pomezia, Rome, Italy) on quality of life (QoL) and sexual function in perimenopausal women. METHODS: Sixty perimenopausal women having vasomotor symptoms and being in the -1, +1a of the STRAW system (amenorrhea for longer than 60 days and FSH < 20 UI/L) were enrolled. The modified Kupperman Index (KI) was used to evaluate menopause symptoms. The Short Form-36 (SF-36), Female Sexual Function Index (FSFI) and the Female Sexual Distress Scale (FSDS) were used to assess QoL, sexual function and sexual distress, respectively. The study had two follow-ups at 3 and 6 months. RESULTS: The women reported an improvement in the KI total score from the baseline (35 ± 4) to the 1st (21 ± 3, p < 0.05) and the 2nd (18 ± 2, p < 0.01) follow-ups. At the 1st follow-up, the women reported QoL improvements in some functions (p < 0.05); at the 2nd follow-up, they reported improvements in all categories (p < 0.001). At baseline, the total FSFI score was 23.1 ± 1.2 and the FSDS score was 18.1 ± 1.4, both indicating sexual dysfunction with sexual distress. FSFI and FSDS total scores did not change at the 1st follow-up (p = NS). On the contrary, at the 2nd follow-up, the FSFI score had risen to (27.6 ± 1.5) (p < 0.001) and the FSDS score had dropped to (11.3 ± 1.2) (p < 0.001). CONCLUSIONS: Nutraceuticals can be effective in modulating the perimenopausal symptoms in women. The progressive reduction of the vasomotor symptoms reported by women over the nutraceutical usage could contribute to improve their QoL and sexual life.

Safe introduction of ancillary trocars in gynecological surgery: the "yellow island" anatomical landmark.

AIM: This technical note aims to suggest a safe introduction of ancillary trocars in gynaecological surgery, in order to prevent inferior epigastric artery damage. MATERIAL OF STUDY: We performed a narrative overview, synthesizing the findings of literature retrieved from searches of computerized databases. RESULTS: Among the different techniques, the identification of the "yellow island" as anatomical landmark seems to be a useful aid to avoid complication. This particular landmark is identified taking the lateral third of a line between the anterior superior iliac spine and the umbilicus as reference points, by a subperitoneal accumulation of adipose tissue located in that area. DISCUSSION: "Yellow island" could be considered a safe place for trocars introduction because epigastric artery never runs there, even in patients with particular anatomical variants. This technique is particularly useful in obese patients, in which "yellow island" appears to be more evident respect to lean ones. Furthermore, the use of "open" trocars insertion may reduce the possibility of epigastric artery lesions respect to "Verres needle technique". CONCLUSION: The identification of the "yellow island" anatomical landmark could be considered an useful aid for the safe introduction of ancillary trocars in gynaecological surgery. KEY WORDS: Gynaecology, Laparoscopic surgery, Trocars placement.

Otorrhagia and Nosebleed as first signs of Intravascular Absorption Syndrome During Hysteroscopy: From Bench to Bedside.

Hysteroscopic surgery is indicated for the treatment of several intrauterine diseases. The surgeon needs to be aware of, and know how to prevent, possible complications related to these procedures. In the case of operative hysteroscopy, the systemic effects of low-viscosity fluid uptake must be considered in order to prevent the complications in the patient. We report on two unusual clinical signs of intravascular absorption syndrome (IAS) that developed during an operative hysteroscopy with glycine 1.5% as the fluid of distension. Based on our experience, we recommend that practitioners reduce operating times, monitor fluid balances, check electrolytes and kinetic heart rates, and monitor for symptoms including otorrhagia and nosebleed, in order to identify and possibly prevent IAS due to an overload of low-viscosity fluids.

The relationship between negative symptom subdomains and cognition.

BACKGROUND: Negative symptoms and cognitive deficits in schizophrenia are partially overlapping. However, the nature of the relationship between negative symptoms and cognition remains equivocal. Recent reviews have demonstrated the presence of two negative symptom subdomains, diminished emotional expression (DEE) and avolition. In view of this, we sought to clarify the relationship between negative symptoms and cognitive domains. METHOD: A total of 687 participants with schizophrenia were assessed on measures of psychopathology and cognition. Three cognitive factors, namely executive function, fluency/memory and speed/vigilance were computed from the cognitive tests. Confirmatory factor analysis was utilized to examine if a one-factor or two-factor negative model was applicable to our sample. Subsequently, the relationships between negative symptoms and cognition were examined using structural equation modeling. RESULTS: Results demonstrated that the two-factor model fitted the data well. While negative symptoms were mildly to moderately associated with cognition, we found that DEE had unique associations with cognition compared to social avolition, contributing to the validity of the constructs and suggesting the possibility of common underlying substrates in negative symptoms and cognition. CONCLUSIONS: Our study highlighted the need to classify DEE and social avolition separately as both are necessary in refining the complex relationship between negative symptoms and cognition as well as potentially guiding treatment and management of schizophrenia.

Dental management in pregnancy: recent trends.

This review analyzes the changes that occur during normal pregnancy and describes the main odontogenic infections, suggesting the actual best approach in dental management. Several studies support the hypothesis that periodontal disease is associated with preterm labour and other conditions complicating pregnancy, such as pre-eclampsia and fetal growth restriction. Appropriate dental care and prevention during pregnancy may reduce poor prenatal outcomes and eliminating risk factors. Dental examination before pregnancy is strongly suggested in order to act early on dental and periodontal diseases. Prevention means reducing the presence of bacterial plaque through professional hygiene sessions, education, and motivation to proper oral hygiene at home, education in proper nutrition, a balanced diet, and low intake of sugars. For these reasons, it is essential to have a more intense interdisciplinary collaboration between gynecologist and dentist in order to achieve an optimal women's health, during this particular time in their lives.

Pelvic arterial embolization for postpartum hemorrhage: long term results of a single center experience in 29,091 deliveries.

PURPOSE OF INVESTIGATION: To evaluate the rate of all postpartum hemorrhages (PPHs) treated with uterine embolization in a third level delivery center. MATERIALS AND METHODS: Since January 2008 to March 2014, 29,091 deliveries were registered in the present hospital in Bergamo, Italy. Among these deliveries, 2,002 cases (6.8%) of PPHs occurred. Seventy-three patients with severe obstetric hemorrhage underwent uterine artery embolization (UAE) (47 cases, 1.61/1,000 deliveries) or hysterectomy (26 cases, 0.89/1,000 deliveries). All identified cases were followed up by telephone on January 2015 in order to evaluate long term results. RESULTS: Embolization was performed successfully in 45 patients (95.7%). Two women underwent total abdominal hysterectomy: one patient for uterine atony and one for adherent placenta. In the follow up all the women interviewed reported the return of their menstrual cycle and 95.2% of women reported regular cycles. CONCLUSIONS: Embolization showed a success rate of 95.7%. For this reason, in the authors' opinion, it is the best choice as second line treatment of PPH, when patient is hemodynamically stable.

Concomitant chemoradiation treatment in selected Stage I endometrioid endometrial cancers.

PURPOSE OF INVESTIGATION: To evaluate chemotherapy with concomitant radiotherapy (RT) in "high risk" endometrial cancer (EC) patients. Furthermore to develop a new algorithm for management and treatment. MATERIALS AND METHODS: The study included 182 Stage I endometrioid EC patients who underwent definitive surgery after a first treatment. Stage, grade, ploidy DNA index, lymphovascular space involvement (LVSI), tumor diameter (TD), and p53 were considered to identify "high-risk" patients. Twenty-seven women received adjuvant concomitant chemoradiation (CR). Toxicity related to the CR treatment, disease free interval (DFI), and status of the patients were considered. RESULTS: Twenty-seven patients according to the present algorithm treatment were considered at "high risk". Median follow up was 43 months (range 16-68). Twenty-five (92%) patients completed CR treatment. Overall, grade 3/4 hematological toxicity was 18% while gastrointestinal toxicity was 15%. Four patients relapsed with a five-year rate of 14% of recurrences. CONCLUSIONS: Adjuvant concomitant CR is well tolerated and is a feasible regimen in "high risk" patients. The authors' new algorithm treatment could be used for management and further clinical studies.

Laparoendoscopic single-site surgery for the assessment of peritoneal carcinomatosis resectability in patients with advanced ovarian cancer.

PURPOSE OF INVESTIGATION: To evaluate the feasibility, safety, and effectiveness of laparoendoscopic single site surgery (LESS) for the assessment of peritoneal carcinomatosis resectability in patients with advanced stage ovarian cancer (AOC). MATERIALS AND METHODS: The authors retrospectively reviewed the medical records of patients affected by advanced stage ovarian cancer who underwent LESS for operative work-up. A standard cytoreductive laparotomy surgery (CRS) was performed. RESULTS: Fifty-two women affected by AOC underwent LESS for operative work-up. The peritoneal cancer score was completed in 49 (94%) patients by use of LESS; 34/37 (92%) patients considered with a resectable disease were effectively optimally debulked and 15/52 (28%) patients considered with an unresectable disease received before neoadjuvant chemotherapy (NACT) and then underwent surgery. CONCLUSION: LESS is feasible, safe, and is an alternative minimally invasive procedure to assess the resectability of AOC patients.

P16INK4a as a progression/regression tumour marker in LSIL cervix lesions: our clinical experience.

PURPOSE OF INVESTIGATION: The aim of this prospective study was the evaluation of low-grade intraepithelial lesion (LSIL) lesions evolvement in woman with evidence of high risk HPV infection and p 16 4a negative expression. MATERIALS AND METHODS: 150 women with cytological diagnosis of LSIL were selected to be underwent to three years of follow-up consisting in smear test, colposcopy, and protein p16I4a investigation every six months and HPV-test every 12 months. RESULT: Final follow-up showed 45 cases of spontaneous lesion regression and 42 cases of persistence with absence of protein p164NK4a in all of them. There were three cases of disease progression to CIN2, two at 18-month follow-up and one at last follow-up. Disease progression was characterized of p16NK4a expression. CONCLUSION: p16l4a should help to identify which LSIL cases are inclined to the progression of the disease and focalize which patients are eligible for specific treatment.

Diagnosis, antenatal surveillance and management of prolonged pregnancy: current perspectives.

Prolonged pregnancy is defined as a pregnancy that extends beyond 42 weeks of gestation (294 days) from the first day of the last normal menstrual period. An accurate estimation of the 'natural' incidence of prolonged pregnancy would require meticulous early pregnancy dating. The use of ultrasound to establish gestational age reduces the number of pregnancies that are classified as prolonged. Prolonged pregnancy is associated with an increased perinatal mortality and morbidity in pregnancies which appear to be otherwise low risk. Postterm births are easily preventable by intervening to deliver with the use of induction of labor. Thus, this potentially problematic condition deserves further attention and careful consideration. The focus of this article is to review and challenge some current concepts surrounding the diagnosis and management of prolonged pregnancy. We outline how to identify those women with prolonged pregnancy and which is the appropriate moment to start monitoring the fetal wellbeing. Finally we address the question of benefits and hazards of induction of labor strategies.

Cellular and biochemical mechanisms, risk factors and management of preterm birth: state of the art.

Preterm birth (PTB) is usually defined as a delivery before 37 completed weeks or 259 days of gestation. World Health Organization estimates a worldwide incidence of PTB of 9.6%. Infants born preterm are at higher risks than infants born at term for mortality, and acute and chronic morbidity. Major causes of PTB are the following: spontaneous preterm labor with intact membranes (50%), labor induction or caesarean delivery for maternal or fetal indications (30%), and preterm premature rupture of membranes or PPROM (20%). The aim of this review is to analyze this medical condition, focusing on cellular and biochemical mechanisms, maternal risk factors and role of inflammation and infections in preterm premature rupture of membranes (PPROM) and PTB. Moreover we will discuss about the proper therapeutic strategies for its management. Although different methods have been introduced to predict the advent of preterm labour in asymptomatic women, possibilities for real primary prevention are rare. An early estimation of potential risk factors is pivotal in the secondary prevention of PTB. Finally most efforts so far have been tertiary interventions. These measures have reduced perinatal morbidity and mortality. Advances in primary and secondary care will be needed to prevent prematurity-related illness in infants and children.

Refining the latent structure of neuropsychological performance in schizophrenia.

BACKGROUND: Elucidating the cognitive architecture of schizophrenia promises to advance understanding of the clinical and biological substrates of the illness. Traditional cross-sectional neuropsychological approaches differentiate impaired from normal cognitive abilities but are limited in their ability to determine latent substructure. The current study examined the latent architecture of abnormal cognition in schizophrenia via a systematic approach. METHOD: Exploratory factor analysis (EFA) and confirmatory factor analysis (CFA) were carried out on a large neuropsychological dataset including the Brief Assessment of Cognition in Schizophrenia, Continuous Performance Test, Wisconsin Card Sorting Test, Benton Judgment of Line Orientation Test, and Wechsler Abbreviated Scale of Intelligence matrix reasoning derived from 1012 English-speaking ethnic Chinese healthy controls and 707 schizophrenia cases recruited from in- and out-patient clinics. RESULTS: An initial six-factor model fit cognitive data in healthy and schizophrenia subjects. Further modeling, which accounted for methodological variance between tests, resulted in a three-factor model of executive functioning, vigilance/speed of processing and memory that appeared to best discriminate schizophrenia cases from controls. Factor analytic-derived g estimands and conventionally calculated g showed similar case-control discrimination. However, agreement analysis suggested systematic differences between both g indices. CONCLUSIONS: Factor structures derived in the current study were broadly similar to those reported previously. However, factor structures between schizophrenia subjects and healthy controls were different. Roles of factor analytic-derived g estimands and conventional composite score g were further discussed. Cognitive structures underlying cognitive deficits in schizophrenia may prove useful for interrogating biological substrates and enriching effect sizes for subsequent work.

Betula pendula leaves: polyphenolic characterization and potential innovative use in skin whitening products.

The research of new tyrosinase inhibitors is currently important for the development of skin whitening agents; particularly, birch leaves extracts are included in many skin cosmetic products. In this study, the potential ability of Betula pendula leaves ethanolic extract (BE) was evaluated on mushroom tyrosinase activity. Results showed that BE was capable to inhibit dose-dependently l-DOPA oxidation catalyzed by tyrosinase. The inhibition kinetics, analyzed by Lineweaver-Burk plots, showed a noncompetitive inhibition of BE towards the enzyme, using l-DOPA as substrate. The inhibitory mechanism of BE as studied by spectrophotometric analysis, demonstrated its ability to chelate copper ion in the active site of tyrosinase. In addition, BE exhibited Fe(2+)-chelating ability (IC(50)=614.12±2.14 µg/mL), reducing power and radical-scavenging properties (IC(50)=137.22±1.98 µg/mL). These results suggest the usefulness of birch leaves extracts in cosmetic and pharmaceutical industries for their skin-whitening and antioxidant effects. Determination of the polyphenolic compounds in BE extracts was afterward achieved by means of high-performance liquid chromatography (HPLC) with photodiode array (PDA) and mass spectrometry (MS) detection. A total of 25 compounds were positively identified, through the complementary analytical information, and are reported in such a matrix for the first time. Knowledge on the qualitative composition and contents of these natural sources in fact represents mandatory information, for rational consumption and correlation of the beneficial effects to the specific amounts.