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Book ; Online: Magnification of Plasmon Resonances in Monolayer MoS$_{2}$ via Conjugated Molecular Adsorbates

Guerrero-Felipe, Juan Pablo / Valencia, Ana M. / Cocchi, . C.

2023

Abstract: The adsorption of carbon-conjugated molecules represents an established route to tune the electronic and optical properties of transition metal dichalcogenide (TMDC) monolayers. Here, we demonstrate from first principles that such a functionalization ... ...

Abstract	The adsorption of carbon-conjugated molecules represents an established route to tune the electronic and optical properties of transition metal dichalcogenide (TMDC) monolayers. Here, we demonstrate from first principles that such a functionalization with prototypical compounds pyrene and tetracene can also enhance the magnitude of selected plasmon resonances in a MoS$_2$ single sheet, without significantly altering their energy and dispersion. Our proof-of-principle results indicate that such a magnification can be achieved by proper alignment of the molecules with respect to the direction of the transferred momentum. The distinct signatures in the loss function of the interface compared to those of its constituents suggest not only the presence of non-negligible interactions between them but also the possibility of using electron energy loss spectroscopy to detect the presence and the orientation of molecular adsorbates on TMDCs.
Keywords	Condensed Matter - Materials Science
Subject code	535
Publishing date	2023-11-29
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article ; Online: Donors, acceptors, and a bit of aromatics: electronic interactions of molecular adsorbates on hBN and MoS

Melani, Giacomo / Guerrero-Felipe, Juan Pablo / Valencia, Ana M / Krumland, Jannis / Cocchi, Caterina / Iannuzzi, Marcella

Physical chemistry chemical physics : PCCP

2022 Volume 24, Issue 27, Page(s) 16671–16679

Abstract: The design of low-dimensional organic-inorganic interfaces for the next generation of opto-electronic applications requires in-depth understanding of the microscopic mechanisms ruling electronic interactions in these systems. In this work, we present a ... ...

Abstract	The design of low-dimensional organic-inorganic interfaces for the next generation of opto-electronic applications requires in-depth understanding of the microscopic mechanisms ruling electronic interactions in these systems. In this work, we present a first-principles study based on density-functional theory inspecting the structural, energetic, and electronic properties of five molecular donors and acceptors adsorbed on freestanding hexagonal boron nitride (hBN) and molybdenum disulfide (MoS
Language	English
Publishing date	2022-07-13
Publishing country	England
Document type	Journal Article
ZDB-ID	1476244-4
ISSN	1463-9084 ; 1463-9076
ISSN (online)	1463-9084
ISSN	1463-9076
DOI	10.1039/d2cp01502a
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Book ; Online: Donors, Acceptors, and a Bit of Aromatics

Melani, Giacomo / Guerrero-Felipe, Juan Pablo / Valencia, Ana M. / Krumland, Jannis / Cocchi, Caterina / Iannuzzi, Marcella

Electronic Interactions of Molecular Adsorbates on hBN and MoS$_2$ Monolayers

2022

Abstract: The design of low-dimensional organic-inorganic interfaces for the next generation of opto-electronic applications requires an in-depth understanding of the microscopic mechanisms ruling electronic interactions in these systems. In this work, we present ... ...

Abstract	The design of low-dimensional organic-inorganic interfaces for the next generation of opto-electronic applications requires an in-depth understanding of the microscopic mechanisms ruling electronic interactions in these systems. In this work, we present a first-principles study based on density-functional theory inspecting the structural, energetic, and electronic properties of five molecular donors and acceptors adsorbed on freestanding hexagonal boron nitride (hBN) and molybdenum disulfide (MoS$_2$) monolayers. All considered heterostructures are stable, due to the crucial contribution of dispersion interactions, which are maximized by the overall flat arrangement of the physisorbed molecules on both substrates. The level alignment of the hybrid systems depends on the characteristics of the constituents. On hBN, both type-I and type-II heterostructures may form, depending on the relative energies of the frontier orbitals with respect to the vacuum level. On the other hand, all MoS$_2$-based hybrid systems exhibit a type-II level alignment, with the molecular frontier orbitals positioned across the energy gap of the semiconductor. The electronic structure of the hybrid materials is further determined by the formation of interfacial dipole moments and by the wave-function hybridization between the organic and inorganic constituents. These results provide important indications for the design of novel low-dimensional hybrid materials with suitable characteristics for opto-electronics.
Keywords	Condensed Matter - Materials Science
Subject code	541
Publishing date	2022-04-04
Publishing country	us
Document type	Book ; Online
Database	BASE - Bielefeld Academic Search Engine (life sciences selection)

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Article: Weak connectivity and population cohesiveness in rudderfish Kyphosus sandwicensis (Teleostei: Kyphosidae) inhabiting remote oceanic islands

Valencia, Evelyn / Meerhoff, Erika / Díaz‐Cabrera, Ernesto / Guerrero, Felipe / Roja‐Hernández, Noemi / Vega‐Retter, Caren / Veliz, David

Aquatic conservation. 2021 Feb., v. 31, no. 2

2021

Abstract: Population connectivity has a fundamental role in metapopulation dynamics, with important implications in conservation. Easter Island (EI) and Salas y Gómez Island (SG) in the Pacific Ocean are ideal for the study of population connectivity because they ... ...

Abstract	Population connectivity has a fundamental role in metapopulation dynamics, with important implications in conservation. Easter Island (EI) and Salas y Gómez Island (SG) in the Pacific Ocean are ideal for the study of population connectivity because they are separated by 415 km and isolated from other islands in the Pacific Ocean by >2,000 km. Considering that dispersal processes could play a critical role in the persistence of its populations, the connectivity pattern of the rudderfish Kyphosus sandwicensis was evaluated between EI and SG using both a population genetics and a biophysical modelling approach. The variability in the control region of the mitochondrial DNA did not show a significant phylogeographical pattern, and the variability in 16 microsatellite loci suggested that individuals of K. sandwicensis located at EI and SG belong to the same genetic population. However, historical migration showed that 0.2% of the recruits at EI come from SG and that 0.15% at SG come from EI per year. Using simulated larval release during September and a larval development of 30 days in the plankton, biophysical modelling did not detect migration between the islands. Furthermore, self‐recruitment shows interannual variation ranging from 5 to 10% of the total released larvae. Whereas the genetic data showed a lack of population genetic structure but low connectivity of K. sandwicensis between EI and SG, the biophysical modelling showed null movement of particles between the islands. Stochastic movement of larvae or adults could explain the pattern observed, with rafting as an example. These low‐frequency and stochastic movements may be important in maintaining the cohesiveness between EI and SG.
Keywords	Kyphosus ; cohesion ; genetic structure ; larvae ; larval development ; microsatellite repeats ; mitochondrial DNA ; phylogeography ; plankton ; population genetics ; Pacific Ocean ; Pacific Ocean Islands
Language	English
Dates of publication	2021-02
Size	p. 356-366.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	NAL-AP-2-clean ; JOURNAL ARTICLE
ZDB-ID	1146285-1
ISSN	1052-7613
ISSN	1052-7613
DOI	10.1002/aqc.3438
Database	NAL-Catalogue (AGRICOLA)

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Article: Immune-related adverse events of biological immunotherapies used in COVID-19.

Baracaldo-Santamaría, Daniela / Barros-Arias, Giovanna María / Hernández-Guerrero, Felipe / De-La-Torre, Alejandra / Calderon-Ospina, Carlos-Alberto

Frontiers in pharmacology

2022 Volume 13, Page(s) 973246

Abstract: The use of biological immunotherapeutic drugs is one of the options currently being evaluated and employed to manage COVID-19, specifically monoclonal antibodies, which have shown benefit by regulating the excessive immune response seen in patients with ... ...

Abstract	The use of biological immunotherapeutic drugs is one of the options currently being evaluated and employed to manage COVID-19, specifically monoclonal antibodies, which have shown benefit by regulating the excessive immune response seen in patients with severe infection, known as a cytokine storm. Tocilizumab has received particular importance for this clinical application, as has sarilumab. Both drugs share a substantial similarity in terms of pharmacodynamics, being inhibitors of the interleukin six receptor (IL-6Rα). Furthermore, sotrovimab, a neutralizing anti-SARS CoV-2 antibody, has gained the attention of the scientific community since it has recently been authorized under certain circumstances, positioning itself as a new therapeutic alternative in development. However, despite their clinical benefit, biological immunotherapies have the potential to generate life-threatening immune-related adverse events. Therefore it is essential to review their incidence, mechanism, and risk factors. This review aims to provide a comprehensive understanding of the safety of the biological immunotherapeutic drugs currently recommended for the treatment of COVID-19, provide a review of the known immune-mediated adverse events and explore the potential immune-related mechanisms of other adverse reactions.
Language	English
Publishing date	2022-08-25
Publishing country	Switzerland
Document type	Journal Article ; Review
ZDB-ID	2587355-6
ISSN	1663-9812
ISSN	1663-9812
DOI	10.3389/fphar.2022.973246
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Genetics, Morphometrics and Health Characterization of Green Turtle Foraging Grounds in Mainland and Insular Chile.

Álvarez-Varas, Rocío / Medrano, Carol / Benítez, Hugo A / Guerrero, Felipe / León Miranda, Fabiola / Vianna, Juliana A / González, Camila / Véliz, David

Animals : an open access journal from MDPI

2022 Volume 12, Issue 12

Abstract: Two divergent genetic lineages have been described for the endangered green turtle in the Pacific Ocean, occurring sympatrically in some foraging grounds. Chile has seven known green turtle foraging grounds, hosting mainly juveniles of different lineages. ...

Abstract	Two divergent genetic lineages have been described for the endangered green turtle in the Pacific Ocean, occurring sympatrically in some foraging grounds. Chile has seven known green turtle foraging grounds, hosting mainly juveniles of different lineages. Unfortunately, anthropic factors have led to the decline or disappearance of most foraging aggregations. We investigated age-class/sex structure, morphological variation, genetic diversity and structure, and health status of turtles from two mainland (Bahia Salado and Playa Chinchorro) and one insular (Easter Island) Chilean foraging grounds. Bahia Salado is composed of juveniles, and with Playa Chinchorro, exclusively harbors individuals of the north-central/eastern Pacific lineage, with Galapagos as the major genetic contributor. Conversely, Easter Island hosts juveniles and adults from both the eastern Pacific and French Polynesia. Morphological variation was found between lineages and foraging grounds, suggesting an underlying genetic component but also an environmental influence. Turtles from Easter Island, unlike Bahia Salado, exhibited injuries/alterations probably related to anthropic threats. Our findings point to establishing legal protection for mainland Chile's foraging grounds, and to ensure that the administrative plan for Easter Island's marine protected area maintains ecosystem health, turtle population viability, and related cultural and touristic activities.
Language	English
Publishing date	2022-06-07
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2606558-7
ISSN	2076-2615
ISSN	2076-2615
DOI	10.3390/ani12121473
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: Genetics, Morphometrics and Health Characterization of Green Turtle Foraging Grounds in Mainland and Insular Chile

Álvarez-Varas, Rocío / Medrano, Carol / Benítez, Hugo A. / Guerrero, Felipe / León Miranda, Fabiola / Vianna, Juliana A. / González, Camila / Véliz, David

Animals. 2022 June 07, v. 12, no. 12

2022

Abstract	Two divergent genetic lineages have been described for the endangered green turtle in the Pacific Ocean, occurring sympatrically in some foraging grounds. Chile has seven known green turtle foraging grounds, hosting mainly juveniles of different lineages. Unfortunately, anthropic factors have led to the decline or disappearance of most foraging aggregations. We investigated age-class/sex structure, morphological variation, genetic diversity and structure, and health status of turtles from two mainland (Bahia Salado and Playa Chinchorro) and one insular (Easter Island) Chilean foraging grounds. Bahia Salado is composed of juveniles, and with Playa Chinchorro, exclusively harbors individuals of the north-central/eastern Pacific lineage, with Galapagos as the major genetic contributor. Conversely, Easter Island hosts juveniles and adults from both the eastern Pacific and French Polynesia. Morphological variation was found between lineages and foraging grounds, suggesting an underlying genetic component but also an environmental influence. Turtles from Easter Island, unlike Bahia Salado, exhibited injuries/alterations probably related to anthropic threats. Our findings point to establishing legal protection for mainland Chile’s foraging grounds, and to ensure that the administrative plan for Easter Island’s marine protected area maintains ecosystem health, turtle population viability, and related cultural and touristic activities.
Keywords	Chelonia mydas ; environmental health ; genetic variation ; health status ; marine protected areas ; morphometry ; playas ; population viability ; turtles ; Chile ; French Polynesia ; Pacific Ocean
Language	English
Dates of publication	2022-0607
Publishing place	Multidisciplinary Digital Publishing Institute
Document type	Article
ZDB-ID	2606558-7
ISSN	2076-2615
ISSN	2076-2615
DOI	10.3390/ani12121473
Database	NAL-Catalogue (AGRICOLA)

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Article ; Online: Platelet function defects and sertraline-induced bleeding: a case report.

Strumia, Mathilde / Guerrero, Felipe / Maurel-Ribes, Agnès / Garcia, Cédric / Payrastre, Bernard / Bagheri, Haleh

Fundamental & clinical pharmacology

2020 Volume 34, Issue 5, Page(s) 632–636

Abstract: A 71-year-old man is admitted for nose bleeds recurring for several days. His medical background shows in particular major depression for which he has been receiving sertraline for several years. The workup shows anemia, and no anomalies on head and neck ...

Abstract	A 71-year-old man is admitted for nose bleeds recurring for several days. His medical background shows in particular major depression for which he has been receiving sertraline for several years. The workup shows anemia, and no anomalies on head and neck CT angiography. However, further explorations suggest an acquired thrombopathy that could have contributed to the bleeding. During sertraline exposure, platelet functional exploration and platelet secretion were abnormal. Sertraline is often used as first-line treatment of depression. Pharmacological data and spontaneous notifications suggest increased potential risk with sertraline. It appears necessary to pay attention to bleeding with sertraline use.
MeSH term(s)	Aged ; Blood Platelets/drug effects ; Depressive Disorder/drug therapy ; Diagnosis, Differential ; Epistaxis/chemically induced ; Epistaxis/diagnosis ; Humans ; Male ; Serotonin Uptake Inhibitors/adverse effects ; Serotonin Uptake Inhibitors/pharmacology ; Serotonin Uptake Inhibitors/therapeutic use ; Sertraline/adverse effects ; Sertraline/pharmacology ; Sertraline/therapeutic use
Chemical Substances	Serotonin Uptake Inhibitors ; Sertraline (QUC7NX6WMB)
Language	English
Publishing date	2020-03-18
Publishing country	England
Document type	Case Reports ; Journal Article ; Review
ZDB-ID	639134-5
ISSN	1472-8206 ; 0767-3981
ISSN (online)	1472-8206
ISSN	0767-3981
DOI	10.1111/fcp.12552
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Article ; Online: Pediatric patients with lysosomal acid lipase deficiency.

Suarez-Zamora, David A / Rojas-Rojas, Maria M / Ordoñez-Guerrero, Felipe / Mugnier-Quijano, Jacqueline / Lopez-Panqueva, Rocio

Revista espanola de patologia : publicacion oficial de la Sociedad Espanola de Anatomia Patologica y de la Sociedad Espanola de Citologia

2021 Volume 56, Issue 2, Page(s) 113–118

Abstract: Lysosomal acid lipase (LAL) deficiency is a rare, autosomal recessive disease caused by mutations in the LIPA gene, which produces cholesteryl ester and triglyceride accumulation predominantly in hepatocytes, adrenal glands, and gastrointestinal tract. ... ...

Abstract	Lysosomal acid lipase (LAL) deficiency is a rare, autosomal recessive disease caused by mutations in the LIPA gene, which produces cholesteryl ester and triglyceride accumulation predominantly in hepatocytes, adrenal glands, and gastrointestinal tract. We describe two new cases occurring in siblings, aged 5 and 7 years, who presented with hepatomegaly, dyslipidemia, and abnormal liver function. Percutaneous liver biopsy revealed portal inflammation, hypertrophic Kupffer cells with a foamy appearance and microvesicular steatosis with fibrosis. Immunostaining for lysosomal markers, cathepsin D and LAMP1 reflected the lysosomal nature of the lipid vacuoles. After enzymatic confirmation, enzyme replacement therapy was initiated for both siblings. Follow-up transaminase levels and lipid profiles showed a notable decrease in AST and ALT and a slight increase in HDL cholesterol. It is crucial to increase awareness of this rare condition among clinicians and pathologists. The expression of lysosomal markers around the lipid vacuoles might help diagnose LAL deficiency in pediatric patients.
MeSH term(s)	Humans ; Child ; Wolman Disease/complications ; Wolman Disease/diagnosis ; Wolman Disease/genetics ; Sterol Esterase/genetics ; Mutation ; Lipids ; Wolman Disease
Chemical Substances	Sterol Esterase (EC 3.1.1.13) ; Lipids
Language	English
Publishing date	2021-06-29
Publishing country	Spain
Document type	Case Reports
ZDB-ID	2463888-2
ISSN	1988-561X ; 1988-561X
ISSN (online)	1988-561X
ISSN	1988-561X
DOI	10.1016/j.patol.2021.03.005
Database	MEDical Literature Analysis and Retrieval System OnLINE

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Article: False Contraindications for Vaccinations Result in Sub-Optimal Vaccination Coverage in Quito, Ecuador: A Cross-Sectional Study.

Andrade-Guerrero, Felipe / Tapia, Adriana / Andrade, Vinicio / Vásconez-González, Jorge / Andrade-Guerrero, José / Noroña-Calvachi, Carlos / Izquierdo-Condoy, Juan S / Yeager, Justin / Ortiz-Prado, Esteban

Vaccines

2022 Volume 11, Issue 1

Abstract: Vaccination coverage in Ecuador has decreased since 2013, falling short of the World Health Organization's vaccination goal. There are several causes for this deficiency in coverage, one of these are lost vaccination opportunities, which are caused when ... ...

Abstract	Vaccination coverage in Ecuador has decreased since 2013, falling short of the World Health Organization's vaccination goal. There are several causes for this deficiency in coverage, one of these are lost vaccination opportunities, which are caused when a patient without contraindications postpones, or for other reasons fails to receive a recommended immunization. The objective of this study was to determine the state of knowledge regarding vaccination contraindications among the Metropolitan District of Quito health personnel to assess missed vaccination opportunities. Through this cross-sectional descriptive study, health personnel were surveyed online and asked 18 clinical scenarios which were created to evaluate their knowledge of the true contraindications of vaccination, and measure missed opportunities. A total of 273 surveys were collected; 74% belonged to the public health system, and the rest represented by private practitioners. Of those surveyed, 98.2% of health personnel had improperly denied vaccination at least once. We specifically found vaccinations were incorrectly denied more frequently in cases where the hypothetical patient presented mild or moderate fever cases. The use of corticosteroids, autoimmune diseases, and egg allergy were also incorrectly denied (89%, 71.4%, 72.9%, and 58.6%, respectively). Among the health personnel surveyed, there is an apparent lack of knowledge of the true contraindications of vaccination and differences in knowledge about contraindications according to personnel in charge of administering immunization to children. Our preliminary results suggest that lack of education related to side effects could be biasing medical professionals' decisions, causing them to unnecessarily delay or deny vaccinations, which likely contributes to explaining low overall vaccination coverage in Quito, the capital city of Ecuador.
Language	English
Publishing date	2022-12-27
Publishing country	Switzerland
Document type	Journal Article
ZDB-ID	2703319-3
ISSN	2076-393X
ISSN	2076-393X
DOI	10.3390/vaccines11010060
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