Publications by authors named "M Alma Solis"

296 Publications

Approaches for the Prediction of Leaf Wetness Duration with Machine Learning.

Biomimetics (Basel) 2021 May 14;6(2). Epub 2021 May 14.

Instituto del Café de Costa Rica, Heredia 280-3011, Costa Rica.

The prediction of leaf wetness duration (LWD) is an issue of interest for disease prevention in coffee plantations, forests, and other crops. This study analyzed different LWD prediction approaches using machine learning and meteorological and temporal variables as the models' input. The information was collected through meteorological stations placed in coffee plantations in six different regions of Costa Rica, and the leaf wetness duration was measured by sensors installed in the same regions. The best prediction models had a mean absolute error of around 60 min per day. Our results demonstrate that for LWD modeling, it is not convenient to aggregate records at a daily level. The model performance was better when the records were collected at intervals of 15 min instead of 30 min.
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http://dx.doi.org/10.3390/biomimetics6020029DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8161455PMC
May 2021

Antimicrobial effectiveness of wound matrices containing native extracellular matrix with polyhexamethylene biguanide.

Int Wound J 2021 May 6. Epub 2021 May 6.

Organogenesis Inc., Canton, Massachusetts, USA.

A variety of wound matrix materials that are designed to help heal both acute and chronic wounds are currently available. Because wounds often encounter opportunistic microbes that can delay healing, the effectiveness of these materials is often suboptimal, resulting in delayed or compromised wound healing. The importance of reducing and controlling wound microbes is well recognised and there are several antimicrobial options available to address this unmet clinical need. This study compares the antimicrobial and wound healing capabilities, both in vivo and in vitro against methicillin-resistant Staphylococcus aureus (MRSA) USA 300, for the following compounds: Collagen Wound Matrix-Anti Microbial (CWM-AM); Collagen Wound Matrix-Anti Microbial XT (CWM-AM XT); Antimicrobial Hydrofiber Wound Dressing (AHWD); Dermal Scaffold with Silver (DRSAg); Collagen Extracellular Matrix (CEM); Collagen Wound Matrix (CWM); Matrix Wound Dressing with Silver (MWDAg); Cadexomer Iodine Gel (CIG); Triple Antibiotic Ointment (TAO); and Antimicrobial Wound Gel (AWG). For the in vitro zone of inhibition assay, AWG and CIG had the largest diffused areas, followed by CWM-AM and CWM-AM XT. Furthermore, CWM-AM, CWM-AM XT, AWG, and CIG exhibited a persistent antimicrobial activity for up to 10 days after incubation. However, in the cytotoxicity studies performed using human fibroblasts, CWM-AM and CWM-AM XT had no detrimental effects in cell proliferation and viability, while AWG and CIG were cytotoxic and prohibitive for cell proliferation. Treatments were then assessed for microbiology and wound healing efficacy using an in vivo porcine deep reticular dermal wound model. CWM-AM XT displayed the greatest in vivo antimicrobial activity against MRSA USA300 and expedited the reepithelialisation at a faster rate than other treatment groups. This study shows that a novel collagen matrix containing an antimicrobial agent can reduce the bacterial load and support healing.
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http://dx.doi.org/10.1111/iwj.13600DOI Listing
May 2021

Attenuation of insecticide impact by a small wetland in a stream draining a horticultural basin in Argentina.

Sci Total Environ 2021 Sep 24;785:147317. Epub 2021 Apr 24.

Instituto de Limnología "Dr. Raúl Ringuelet" (CONICET-UNLP), Bv 120 n° 1437, CP 1900 La Plata, Argentina.

Horticulture has greatly increased in Argentina in recent decades mainly due to increasing greenhouse utilization and agrochemical consumption, thus representing a threat to adjacent water bodies. Riparian wetlands, however, could attenuate agrochemical contamination. The present work therefore compared insecticide concentrations in bottom sediments in addition to sediment toxicity to the amphipod Hyalella curvispina and investigated the macroinvertebrate composition upstream and downstream from a natural wetland in a small stream draining a basin undergoing intense horticultural production. The wetland surface was covered by macrophytes, mainly Thypha sp., and the insecticide concentrations measured downstream from the wetland were significantly lower, at roughly 19% of the upstream values. The growth rates of H. curvispina were significantly higher when exposed to the sediments downstream from the wetland, while the macroinvertebrate-assemblage composition was significantly different upstream and downstream: the snail Pomacea canaliculata was the dominant species upstream while the amphipod H. curvispina was dominant downstream. Pomacea canaliculata is often the dominant species in the regional streams draining agriculture and horticultural basins. Hyalella curvispina is sensitive to pesticide toxicity and is often dominant in streams draining extensive livestock basins and within a biosphere reserve. We conclude that riparian wetlands effectively attenuate horticulture contamination in pampean streams and should therefore be preserved and restored.
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http://dx.doi.org/10.1016/j.scitotenv.2021.147317DOI Listing
September 2021

PRSS50 is a testis protease responsible for proper sperm tail formation and function.

Development 2021 Apr 16;148(8). Epub 2021 Apr 16.

Scott Department of Urology, Baylor College of Medicine, Houston, TX 77030, USA.

Multiple morphological abnormalities of the sperm flagella (MMAF) are a major cause of asthenoteratozoospermia. We have identified protease serine 50 (PRSS50) as having a crucial role in sperm development, because Prss50-null mice presented with impaired fertility and sperm tail abnormalities. PRSS50 could also be involved in centrosome function because these mice showed a threefold increase in acephalic sperm (head-tail junction defect), sperm with multiple heads (spermatid division defect) and sperm with multiple tails, including novel two conjoined sperm (complete or partial parts of several flagellum on the same plasma membrane). Our data support that, in the testis, as in tumorigenesis, PRSS50 activates NFκB target genes, such as the centromere protein leucine-rich repeats and WD repeat domain-containing protein 1 (LRWD1), which is required for heterochromatin maintenance. Prss50-null testes have increased IκκB, and reduced LRWD1 and histone expression. Low levels of de-repressed histone markers, such as H3K9me3, in the Prss50-null mouse testis may cause increases in post-meiosis proteins, such as AKAP4, affecting sperm formation. We provide important insights into the complex mechanisms of sperm development, the importance of testis proteases in fertility and a novel mechanism for MMAF.
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http://dx.doi.org/10.1242/dev.197558DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8077533PMC
April 2021

Diagnostics of Manitischeria /gen. nov., an Old-World genus of leaf-mining Tischeriidae, composed of new species and species formerly in Tischeria Zeller.

Zootaxa 2021 Apr 22;4964(2):zootaxa.4964.2.2. Epub 2021 Apr 22.

Institute of Ecology, Nature Research Centre, Akademijos St. 2, LT-08412, Vilnius, Lithuania..

We describe a new genus, Manitischeria Diškus Stonis, gen. nov., and five new species: Manitischeria selindica Stonis Diškus, sp. nov., M. namibiensis Stonis Diškus, sp. nov. from Africa, and M. brachiata Diškus Stonis, sp. nov., M. symbolica Diškus Stonis, sp. nov., and M. baryshnikovae Diškus Stonis, sp. nov. from South East Asia. We discuss the diagnostics of Manitischeria gen. nov. composed of these new species and others transferred from Tischeria Zeller. Species are mostly trophically associated with Malvaceae, but also Rhamnaceae and Betulaceae. We list 18 currently known species of Manitischeria gen. nov., including M. ptarmica (Meyrick), the type species, and provide 13 new combinations and the first documentation of genitalia of some, previously little-known species. New species are illustrated with photographs or drawings of the adults, genitalia, and the leaf mines when available. We briefly discuss the use of herbarium specimens to discover lepidopteran leaf mines, host plant, and distribution data.
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http://dx.doi.org/10.11646/zootaxa.4964.2.2DOI Listing
April 2021