LIVIVO - Search results -

Search results

Result 1 - 10 of total 317

Search options

Article ; Online: Vitellogenin genes are transcribed in Culex quinquefasciatus ovary.

Moura, Alexandre S / Costa-da-Silva, André Luis / Peixoto, Pedro S / Maciel, Ceres / Cardoso, André F

2023 Volume 118, Page(s) e220143

Abstract: Background: Culex quinquefasciatus, a cosmopolitan, domestic, and highly anthropophilic mosquito, is a vector of pathogenic arboviruses such as West Nile virus and Rift Valley virus, as well as lymphatic filariasis. The current knowledge on its ... ...

Abstract	Background: Culex quinquefasciatus, a cosmopolitan, domestic, and highly anthropophilic mosquito, is a vector of pathogenic arboviruses such as West Nile virus and Rift Valley virus, as well as lymphatic filariasis. The current knowledge on its reproductive physiology regarding vitellogenin expression in different tissues is still limited. Objectives: In this study, we analysed the transcriptional profiles of vitellogenin genes in the fat body and ovaries of C. quinquefasciatus females during the first gonotrophic cycle. Methods: C. quinquefasciatus ovaries and/or fat bodies were dissected in different times during the first gonotrophic cycle and total RNA was extracted and used for reverse transcription polymerase chain reaction, quantitative real time-PCR, and in situ hybridisation. Findings: We confirmed the classical descriptions of the vitellogenic process in mosquitoes by verifying that vitellogenin genes are transcribed in the fat bodies of C. quinquefasciatus females. Using RNA in situ hybridisation approach, we showed that vitellogenin genes are also transcribed in developing ovaries, specifically by the follicle cells. Main conclusions: This is the first time that vitellogenin transcripts are observed in mosquito ovaries. Studies to determine if Vg transcripts are translated into proteins and their contribution to the reproductive success of the mosquito need to be further investigated.
MeSH term(s)	Animals ; Female ; Culex/genetics ; Vitellogenins/genetics ; Vitellogenins/metabolism ; Ovary/metabolism ; Mosquito Vectors/genetics ; Culicidae ; RNA/metabolism
Chemical Substances	Vitellogenins ; RNA (63231-63-0)
Language	English
Publishing date	2023-07-17
Publishing country	Brazil
Document type	Journal Article
ZDB-ID	953293-6
ISSN	1678-8060 ; 0074-0276
ISSN (online)	1678-8060
ISSN	0074-0276
DOI	10.1590/0074-02760220143
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Ud II Zs.33: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 2021: Bestellungen von Artikeln über das Online-Bestellformular
ab Jg. 2022: Lesesaal (EG)

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Details ▾
- See ZB MED holdings
- Order with fees

Article ; Online: Impact of network centrality and income on slowing infection spread after outbreaks.

Yücel, Shiv G / Pereira, Rafael H M / Peixoto, Pedro S / Camargo, Chico Q

Applied network science

2023 Volume 8, Issue 1, Page(s) 16

Abstract: The COVID-19 pandemic has shed light on how the spread of infectious diseases worldwide are importantly shaped by both human mobility networks and socio-economic factors. However, few studies look at how both socio-economic conditions and the complex ... ...

Abstract	The COVID-19 pandemic has shed light on how the spread of infectious diseases worldwide are importantly shaped by both human mobility networks and socio-economic factors. However, few studies look at how both socio-economic conditions and the complex network properties of human mobility patterns interact, and how they influence outbreaks together. We introduce a novel methodology, called the Infection Delay Model, to calculate how the arrival time of an infection varies geographically, considering both effective distance-based metrics and differences in regions' capacity to isolate-a feature associated with socio-economic inequalities. To illustrate an application of the Infection Delay Model, this paper integrates household travel survey data with cell phone mobility data from the São Paulo metropolitan region to assess the effectiveness of lockdowns to slow the spread of COVID-19. Rather than operating under the assumption that the next pandemic will begin in the same region as the last, the model estimates infection delays under every possible outbreak scenario, allowing for generalizable insights into the effectiveness of interventions to delay a region's first case. The model sheds light on how the effectiveness of lockdowns to slow the spread of disease is influenced by the interaction of mobility networks and socio-economic levels. We find that a negative relationship emerges between network centrality and the infection delay after a lockdown, irrespective of income. Furthermore, for regions across all income and centrality levels, outbreaks starting in less central locations were more effectively slowed by a lockdown. Using the Infection Delay Model, this paper identifies and quantifies a new dimension of disease risk faced by those most central in a mobility network.
Language	English
Publishing date	2023-02-24
Publishing country	Switzerland
Document type	Journal Article
ISSN	2364-8228
ISSN (online)	2364-8228
DOI	10.1007/s41109-023-00540-z
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: Inducing Polyp Bail-out in Coral Colonies to Obtain Individualized Micropropagates for Laboratory Experimental Use.

Cardoso, Pedro M / Alsaggaf, Ahmed A / Villela, Helena M / Peixoto, Raquel S

Journal of visualized experiments : JoVE

2022 , Issue 182

Abstract: Corals are colonial animals formed by modular units called polyps. Coral polyps are physiologically linked and connected by tissue. The phenomenon of polyp bail-out is a process induced by acute stress, in which coral polyps digest the tissue connecting ... ...

Abstract	Corals are colonial animals formed by modular units called polyps. Coral polyps are physiologically linked and connected by tissue. The phenomenon of polyp bail-out is a process induced by acute stress, in which coral polyps digest the tissue connecting them to the rest of the colony and ultimately detach from the skeleton to continue living as separate individuals. Coral biologists have acknowledged the process of polyp bail-out for years, but only recently the micropropagates generated by this process have been recognized as a model system for coral biology studies. The use of polyp bail-out can create a high number of clonal units from a single coral fragment. Another benefit is that single polyps or patches of polyps can be easily visualized under a microscope and maintained in highly standardized low-cost environments such as Petri dishes, flasks, and microfluidic chips. The present protocol demonstrates reproducible methods capable of inducing coral micropropagation and different approaches for maintaining the single polyps alive in the long term. This methodology was capable of successfully cultivating polyps of the coral species Pocillopora verrucosa for up to 8 weeks after bail-out, exhibiting the practicality of using individual coral polyps for coral research.
MeSH term(s)	Animals ; Anthozoa/physiology ; Coral Reefs ; Microfluidics ; Microscopy ; Models, Biological
Language	English
Publishing date	2022-04-28
Publishing country	United States
Document type	Journal Article ; Video-Audio Media ; Research Support, Non-U.S. Gov't
ZDB-ID	2259946-0
ISSN	1940-087X ; 1940-087X
ISSN (online)	1940-087X
ISSN	1940-087X
DOI	10.3791/63840
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Exploring the Potential Molecular Mechanisms of Interactions between a Probiotic Consortium and Its Coral Host.

Rosado, Phillipe M / Cardoso, Pedro M / Rosado, João G / Schultz, Júnia / Nunes da Rocha, Ulisses / Keller-Costa, Tina / Peixoto, Raquel S

mSystems

2023 Volume 8, Issue 1, Page(s) e0092122

Abstract: Beneficial microorganisms for corals (BMCs) have been demonstrated to be effective probiotics to alleviate bleaching and mitigate coral ... ...

Abstract	Beneficial microorganisms for corals (BMCs) have been demonstrated to be effective probiotics to alleviate bleaching and mitigate coral mortality
MeSH term(s)	Animals ; Anthozoa/genetics ; Bacteria/genetics ; Probiotics/pharmacology ; Coral Bleaching
Language	English
Publishing date	2023-01-23
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ISSN	2379-5077
ISSN (online)	2379-5077
DOI	10.1128/msystems.00921-22
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article: A Longitudinal Study with a Laser Methane Detector (LMD) Highlighting Lactation Cycle-Related Differences in Methane Emissions from Dairy Cows.

Pereira, Ana Margarida / Peixoto, Pedro / Rosa, Henrique J D / Vouzela, Carlos / Madruga, João S / Borba, Alfredo E S

Animals : an open access journal from MDPI

2023 Volume 13, Issue 6

Abstract: Reversing climate change requires broad, cohesive, and strategic plans for the mitigation of greenhouse gas emissions from animal farming. The implementation and evaluation of such plans demand accurate and accessible methods for monitoring on-field ... ...

Abstract	Reversing climate change requires broad, cohesive, and strategic plans for the mitigation of greenhouse gas emissions from animal farming. The implementation and evaluation of such plans demand accurate and accessible methods for monitoring on-field CH
Language	English
Publishing date	2023-03-08
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2606558-7
ISSN	2076-2615
ISSN	2076-2615
DOI	10.3390/ani13060974
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Modeling future spread of infections via mobile geolocation data and population dynamics. An application to COVID-19 in Brazil.

Peixoto, Pedro S / Marcondes, Diego / Peixoto, Cláudia / Oliva, Sérgio M

PloS one

2020 Volume 15, Issue 7, Page(s) e0235732

Abstract: Mobile geolocation data is a valuable asset in the assessment of movement patterns of a population. Once a highly contagious disease takes place in a location the movement patterns aid in predicting the potential spatial spreading of the disease, hence ... ...

Abstract	Mobile geolocation data is a valuable asset in the assessment of movement patterns of a population. Once a highly contagious disease takes place in a location the movement patterns aid in predicting the potential spatial spreading of the disease, hence mobile data becomes a crucial tool to epidemic models. In this work, based on millions of anonymized mobile visits data in Brazil, we investigate the most probable spreading patterns of the COVID-19 within states of Brazil. The study is intended to help public administrators in action plans and resources allocation, whilst studying how mobile geolocation data may be employed as a measure of population mobility during an epidemic. This study focuses on the states of São Paulo and Rio de Janeiro during the period of March 2020, when the disease first started to spread in these states. Metapopulation models for the disease spread were simulated in order to evaluate the risk of infection of each city within the states, by ranking them according to the time the disease will take to infect each city. We observed that, although the high-risk regions are those closer to the capital cities, where the outbreak has started, there are also cities in the countryside with great risk. The mathematical framework developed in this paper is quite general and may be applied to locations around the world to evaluate the risk of infection by diseases, in special the COVID-19, when geolocation data is available.
MeSH term(s)	Brazil/epidemiology ; COVID-19 ; Cities/epidemiology ; Computer Simulation ; Coronavirus Infections/epidemiology ; Disease Outbreaks ; Health Status Indicators ; Humans ; Mobile Applications ; Models, Biological ; Pandemics ; Pneumonia, Viral/epidemiology ; Population Density ; Travel
Keywords	covid19
Language	English
Publishing date	2020-07-16
Publishing country	United States
Document type	Journal Article ; Research Support, Non-U.S. Gov't
ZDB-ID	2267670-3
ISSN	1932-6203 ; 1932-6203
ISSN (online)	1932-6203
ISSN	1932-6203
DOI	10.1371/journal.pone.0235732
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article: The double burden of malnutrition and environmental enteric dysfunction as potential factors affecting gut-derived melatonin in children under adverse environments.

Bezerra, Alane N / Peixoto, Caroline L / Lopes, Synara C / Bruin, Veralice M S / Bruin, Pedro Felipe C / Oriá, Reinaldo B

Frontiers in nutrition

2023 Volume 10, Page(s) 1217173

Abstract: Poor environmental conditions combined with continuous unhealthy and unsafe diets may substantially increase the risk of a vicious cycle of enteric infections (EED-environmental enteric dysfunction) and malnutrition (DBM-double burden of malnutrition) in ...

Abstract	Poor environmental conditions combined with continuous unhealthy and unsafe diets may substantially increase the risk of a vicious cycle of enteric infections (EED-environmental enteric dysfunction) and malnutrition (DBM-double burden of malnutrition) in children. Gut melatonin, mainly produced by the intestinal microbiota, can modulate the composition, variety, and dynamics of the microbiota itself and may affect and be affected by intestinal microbiota alterations due to DBM and EED.
Language	English
Publishing date	2023-11-27
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2776676-7
ISSN	2296-861X
ISSN	2296-861X
DOI	10.3389/fnut.2023.1217173
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Article ; Online: Modeling future spread of infections via mobile geolocation data and population dynamics. An application to COVID-19 in Brazil.

Pedro S Peixoto / Diego Marcondes / Cláudia Peixoto / Sérgio M Oliva

PLoS ONE, Vol 15, Iss 7, p e

2020 Volume 0235732

Abstract	Mobile geolocation data is a valuable asset in the assessment of movement patterns of a population. Once a highly contagious disease takes place in a location the movement patterns aid in predicting the potential spatial spreading of the disease, hence mobile data becomes a crucial tool to epidemic models. In this work, based on millions of anonymized mobile visits data in Brazil, we investigate the most probable spreading patterns of the COVID-19 within states of Brazil. The study is intended to help public administrators in action plans and resources allocation, whilst studying how mobile geolocation data may be employed as a measure of population mobility during an epidemic. This study focuses on the states of São Paulo and Rio de Janeiro during the period of March 2020, when the disease first started to spread in these states. Metapopulation models for the disease spread were simulated in order to evaluate the risk of infection of each city within the states, by ranking them according to the time the disease will take to infect each city. We observed that, although the high-risk regions are those closer to the capital cities, where the outbreak has started, there are also cities in the countryside with great risk. The mathematical framework developed in this paper is quite general and may be applied to locations around the world to evaluate the risk of infection by diseases, in special the COVID-19, when geolocation data is available.
Keywords	Medicine ; R ; Science ; Q ; covid19
Subject code	910
Language	English
Publishing date	2020-01-01T00:00:00Z
Publisher	Public Library of Science (PLoS)
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: A Longitudinal Study with a Laser Methane Detector (LMD) Highlighting Lactation Cycle-Related Differences in Methane Emissions from Dairy Cows

Ana Margarida Pereira / Pedro Peixoto / Henrique J. D. Rosa / Carlos Vouzela / João S. Madruga / Alfredo E. S. Borba

Animals, Vol 13, Iss 974, p

2023 Volume 974

Abstract: ... analysis. Daily CH 4 emission was estimated from each profile’s mean CH 4 concentration (MEAN_CH 4 ). Data ...

Abstract	Reversing climate change requires broad, cohesive, and strategic plans for the mitigation of greenhouse gas emissions from animal farming. The implementation and evaluation of such plans demand accurate and accessible methods for monitoring on-field CH 4 concentration in eructating breath. Therefore, this paper describes a longitudinal study over six months, aiming to test a protocol using a laser methane detector (LMD) to monitor CH 4 emissions in semi-extensive dairy farm systems. Over 10 time points, CH 4 measurements were performed in dry (late gestation) and lactating cows at an Azorean dairy farm. Methane traits including CH 4 concentration related to eructation (E_CH4) and respiration (R_CH 4 ), and eructation events, were automatically computed from CH 4 measured values using algorithms created for peak detection and analysis. Daily CH 4 emission was estimated from each profile’s mean CH 4 concentration (MEAN_CH 4 ). Data were analyzed using a linear mixed model, including breed, lactation stage, and parity as fixed effects, and cow (subject) and time point as random effects. The results showed that Holsteins had higher E_CH 4 than Jersey cows ( p < 0.001). Although a breed-related trend was found in daily CH 4 emission ( p = 0.060), it was not significant when normalized to daily milk yield ( p > 0.05). Methane emissions were lower in dry than in lactation cows ( p < 0.05) and increased with the advancement of the lactation, even when normalizing it to daily milk yield ( p < 0.05). Primiparous cows had lower daily CH 4 emissions related to R_ CH 4 compared to multiparous ( p < 0.001). This allowed the identification of periods of higher CH 4 emissions within the milk production cycle of dairy cows, and thus, the opportunity to tailor mitigation strategies accordingly.
Keywords	Azores ; dairy cows ; extensive farming systems ; laser methane detector (LMD) ; methane ; milk sustainability ; Veterinary medicine ; SF600-1100 ; Zoology ; QL1-991
Subject code	630
Language	English
Publishing date	2023-03-01T00:00:00Z
Publisher	MDPI AG
Document type	Article ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

Full text online

Full text

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article ; Online: A Longitudinal Study with a Laser Methane Detector (LMD) Highlighting Lactation Cycle-Related Differences in Methane Emissions from Dairy Cows

Pereira, Ana Margarida / Peixoto, Pedro / Rosa, Henrique J. D. / Vouzela, Carlos / Madruga, João S. / Borba, Alfredo E. S.

Animals. 2023 Mar. 08, v. 13, no. 6

2023

Abstract: ... analysis. Daily CH₄ emission was estimated from each profile’s mean CH₄ concentration (MEAN_CH₄). Data were ...

Abstract	Reversing climate change requires broad, cohesive, and strategic plans for the mitigation of greenhouse gas emissions from animal farming. The implementation and evaluation of such plans demand accurate and accessible methods for monitoring on-field CH₄ concentration in eructating breath. Therefore, this paper describes a longitudinal study over six months, aiming to test a protocol using a laser methane detector (LMD) to monitor CH₄ emissions in semi-extensive dairy farm systems. Over 10 time points, CH₄ measurements were performed in dry (late gestation) and lactating cows at an Azorean dairy farm. Methane traits including CH₄ concentration related to eructation (E_CH4) and respiration (R_CH₄), and eructation events, were automatically computed from CH₄ measured values using algorithms created for peak detection and analysis. Daily CH₄ emission was estimated from each profile’s mean CH₄ concentration (MEAN_CH₄). Data were analyzed using a linear mixed model, including breed, lactation stage, and parity as fixed effects, and cow (subject) and time point as random effects. The results showed that Holsteins had higher E_CH₄ than Jersey cows (p < 0.001). Although a breed-related trend was found in daily CH₄ emission (p = 0.060), it was not significant when normalized to daily milk yield (p > 0.05). Methane emissions were lower in dry than in lactation cows (p < 0.05) and increased with the advancement of the lactation, even when normalizing it to daily milk yield (p < 0.05). Primiparous cows had lower daily CH₄ emissions related to R_ CH₄ compared to multiparous (p < 0.001). This allowed the identification of periods of higher CH₄ emissions within the milk production cycle of dairy cows, and thus, the opportunity to tailor mitigation strategies accordingly.
Keywords	Holstein ; Jersey ; climate change ; cows ; dairy farming ; greenhouse gases ; lactation stage ; longitudinal studies ; methane ; milk yield ; pregnancy ; statistical models
Language	English
Dates of publication	2023-0308
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article ; Online
ZDB-ID	2606558-7
ISSN	2076-2615
ISSN	2076-2615
DOI	10.3390/ani13060974
Database	NAL-Catalogue (AGRICOLA)

Order via subito

To top

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

Inter-library loan at ZB MED

Full text online

More links

Kategorien

Inter-library loan at ZB MED

More links

Kategorien

Order via subito