Publications by authors named "Simone Martini"

Among the few mosquito larvicides available in the market, Bacillus thuringiensis subsp. israelensis (Bti) and B. sphaericus (Bs) represent the most environmentally safe alternatives.

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Background: In August 2020, in the context of COVID-19 pandemics, an autochthonous dengue outbreak was identified for the first time in Italy.

Methods: Following the reporting of the index case of autochthonous dengue, epidemiological investigation, vector control and substances of human origin safety measures were immediately activated, according to the national arbovirus surveillance plan. Dengue cases were followed-up with weekly visits and laboratory tests until recovery and clearance of viral RNA from blood.

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Article Synopsis
  • The article discusses the monitoring of three invasive mosquito species in Northeast Italy from 2011 to 2020, focusing on data collection from both larvae and adults.
  • Routine species identification used both physical characteristics and molecular techniques to ensure accuracy, with detailed updates provided for 2019 and 2020.
  • The findings include geo-referenced maps showing the presence of these species, insights into their breeding sites, and occurrences of native mosquitoes found alongside them.
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Polymerase chain reaction (PCR)-based genotyping of mutations in the voltage-sensitive sodium channel () associated with resistance to pyrethroid insecticides is widely used and represents a potential early warning and monitoring system for insecticide resistance arising in mosquito populations, which are vectors of different human pathogens. In the secondary vector -an Asian species that has invaded and colonized the whole world, including temperate regions-sequencing of domain II of the gene is still needed to detect the V1016G mutation associated with pyrethroid resistance. In this study we developed and tested a novel allele-specific PCR (AS-PCR) assay to genotype the V1016G mutation in this species and applied it to the analysis of wild populations from Italy.

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  • * The primary case originated from West Sumatra, Indonesia, highlighting the risk of imported diseases.
  • * The pandemic emphasized the importance of screening travelers with fever from dengue-endemic areas in regions where mosquitoes that can transmit the virus exist.
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  • Aquatain is a new larvicide formulation that was tested for its effectiveness in controlling mosquito populations in catch basins in northeastern Italy.
  • The study involved comparing the number of adult mosquitoes emerging from treated basins to those from control basins over nine weeks, using statistical analysis to evaluate the results.
  • Results showed that Aquatain effectively reduced mosquito emergence, but its effectiveness was limited by heavy rainfall, which necessitates careful timing for future applications.
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The detection of biosignatures on Mars is of outstanding interest in the current field of astrobiology and drives various fields of research, ranging from new sample collection strategies to the development of more sensitive detection techniques. Detailed analysis of the organic content in Mars analog materials collected from extreme environments on Earth improves the current understanding of biosignature preservation and detection under conditions similar to those of Mars. In this article, we examined the biological fingerprint of several locations in the Atacama Desert (Chile), which include different wet and dry, and intermediate to high elevation salt flats (also named salars).

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Background: The invasive mosquito species, Aedes japonicus japonicus, was detected in northeastern Italy for the first time in 2015, at the border with Austria. After this finding, a more intensive monitoring was carried out to assess its distribution and to collect biological data. Herein, we report the results of four years (2015-2018) of activity.

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Aedes albopictus and Culex pipiens are commonly distributed in Italy and represent the main species found in catch basins. The application of a silicone-based film (e.g.

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Article Synopsis
  • Aedes koreicus, an invasive mosquito species, was first found in north-eastern Italy in 2011 during the monitoring of another species, Aedes albopictus.
  • From 2011 to 2015, intensive surveillance revealed that Ae. koreicus spread to 73 out of 155 municipalities, with the highest infestation in the Province of Belluno.
  • The species is expanding south and west due to favorable habitats and road connections, posing a significant risk of invasion in northern Italy over the next decade.
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  • West Nile virus (WNV) has re-emerged as a health concern in Europe, especially in northern Italy, with increased outbreaks and human cases since 2008.
  • In 2013, extensive entomological surveillance identified 562,079 mosquitoes, with a notable 1.9% testing positive for WNV, primarily of lineage II, and also detected the related Usutu virus in 2.6% of mosquito pools.
  • The study found that Culex pipiens mosquitoes were the main WNV vectors, and the conditions in areas with higher mosquito abundance were warmer and less rainy, promoting WNV circulation.
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After its first introduction in the 1980's the Asian tiger mosquito, Aedes albopictus (Skuse), has spread throughout Southern Europe. Ae. albopictus is considered an epidemiologically important vector for the transmission of many viral pathogens such as the yellow fever virus, dengue fever and Chikungunya fever, as well as several filarial nematodes such as Dirofilaria immitis or D.

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Using international trading and passive transportation routes, the Asian tiger mosquito, Aedes albopictus (Skuse, 1894), has colonized Europe. While the most common tool to monitor the presence of the mosquito is the ovitrap, other kinds of eggs are occasionally found in the traps as well. Most of the eggs are easy to distinguish, however, some white-yellow eggs have a similar shape and size to those of the tiger mosquito and are often falsely identified as freshly laid tiger mosquito eggs.

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Background: The container breeding species belonging to the genus Aedes (Meigen) are frequently recorded out of their place of origin. Invasive Aedes species are proven or potential vectors of important Arboviruses and their establishment in new areas pose a threat for human and animal health. A new species of exotic mosquito was recorded in 2011 in north-eastern Italy: Aedes (Finlaya) koreicus [Hulecoeteomyia koreica].

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Notch signaling is a key regulator of cell-fate decisions and is essential for proper neuroectodermal development. There, it favors the formation of ectoderm, promotes maintenance of neural stem cells, inhibits differentiation into neurons, and commits neural progenitors to a glial fate. In this report, we explore downstream effects of Notch important for astroglial differentiation.

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In 2010, in Veneto Region, Italy, surveillance of summer fevers was conducted to promptly identify autochthonous cases of West Nile fever and increase detection of imported dengue and chikungunya in travelers. Surveillance highlighted the need to modify case definitions, train physicians, and when a case is identified, implement vector control measures.

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Article Synopsis
  • In the Veneto region of Italy, a surveillance system was set up in 1991 to monitor the Asian tiger mosquito, leading to the unexpected discovery of a new mosquito species, Aedes koreicus, in 2011.
  • Twelve larvae and pupae found in a manhole in Belluno were raised to adults and confirmed as Aedes koreicus, indicating that this Southeast Asian species had become established in the area.
  • The presence of Aedes koreicus raises concerns for public health due to its potential role as a vector for diseases, complicating existing mosquito monitoring efforts and highlighting the need for improved surveillance for invasive species.
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Notch receptor signaling controls cell-fate specification, self-renewal, differentiation, proliferation and apoptosis throughout development and regeneration in all animal species studied to date. Its dysfunction causes several developmental defects and diseases in the adult. A key feature of Notch signaling is its remarkable cell-context dependency.

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Background: Notch receptor signaling controls developmental cell fates in a cell-context dependent manner. Although Notch signaling directly regulates transcription via the RBP-J/CSL DNA binding protein, little is known about the target genes that are directly activated by Notch in the respective tissues.

Methodology/principal Findings: To analyze how Notch signaling mediates its context dependent function(s), we utilized a Tamoxifen-inducible system to activate Notch1 in murine embryonic stem cells at different stages of mesodermal differentiation and performed global transcriptional analyses.

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