Publications by authors named "Jose Baez"

15 Publications

  • Page 1 of 1

Migrating Swollen Joint and Lyme Disease: A Case Report.

J Emerg Nurs 2021 Jul 11;47(4):543-550. Epub 2021 Jun 11.

This article discusses a case involving a pediatric patient who presented to a large urban children's hospital in the Northeastern United States with complaints of migratory monoarticular joint swelling. The patient had presented with a swollen and painful left knee but with no other associated symptoms. He was nontoxic appearing, afebrile, and had normal vital signs. On examination, he was noted to have a tender and swollen left knee that was not erythematous, bruised, or warm to the touch. There was a history of fevers over the summer after returning home from a camping trip in a park located in the northeastern United States. A plain film knee x-ray showed signs of joint effusion but no osseous abnormalities. A bedside ultrasonography of the knee showed a pocket of fluid in the joint space. With parental consent, the left knee joint was aspirated under direct ultrasound guidance, with collection of dark yellow synovial fluid. This was sent for analysis that included cultures, Gram stain, crystal analysis, and Lyme antigens. The patient was admitted, and his symptoms improved during his hospitalization. The results were positive for Lyme and he was discharged home on a 3-week course of Amoxicillin with complete resolution of his symptoms.
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http://dx.doi.org/10.1016/j.jen.2021.04.009DOI Listing
July 2021

Ensemble modeling of the potential distribution of the whale shark in the Atlantic Ocean.

Ecol Evol 2020 Jan 28;10(1):175-184. Epub 2019 Nov 28.

Instituto Español de Oceanografía Centro Oceanográfico de Canarias Santa Cruz de Tenerife Spain.

The whale shark () is an endangered marine fish species which can be adversely affected by the fishing activities of the industrial purse seine fleet targeting tropical tuna. Tuna tend to aggregate around all types of floating objects, including whale sharks. We analyzed and modeled the spatial distribution and environmental preferences of whale sharks based on the presence and absence data from fishing observations in the Atlantic Ocean. We used a thorough multialgorithm analysis, based on a new presence-absence dataset, and endeavored to follow the most recent recommendations on best practices in species distribution modeling. First, we selected a subset of relevant variables using a generalized linear model that addressed multicollinearity, statistical errors, and information criteria. We then used the selected variables to build a model ensemble including 19 different algorithms. After eliminating models with insufficient performance, we assessed the potential distribution of whale sharks using the mean of the predictions of the selected models. We also assessed the variance among the predictions of different algorithms, in order to identify areas with the highest model consensus. The results show that several coastal regions and warm shallow currents, such as the Gulf Stream and the Canary and Benguela currents, are the most suitable areas for whale sharks under current environmental conditions. Future environmental projections for the Atlantic Ocean suggest that some of the suitable regions will shift northward, but current concentration areas will continue to be suitable for whale shark, although with less productivity, which could have negative consequences for conservation of the species. We discuss the implications of these predictions for the conservation and management of this charismatic marine species.
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http://dx.doi.org/10.1002/ece3.5884DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6972796PMC
January 2020

Effects of atmospheric oscillations on infectious diseases: the case of Chagas disease in Chile.

Mem Inst Oswaldo Cruz 2019 3;114:e180569. Epub 2019 Jun 3.

Universidad Autónoma de Chile, Facultad de Ciencias de la Salud, Instituto de Ciencias Biomédicas, Santiago, Chile.

Background: Currently, there is an increasing global interest for the study of how infectious diseases could be linked to climate and weather variability. The Chagas disease was described in 1909 by Carlos Chagas, and is caused by the flagellate protozoan Trypanosoma cruzi. The Chagas disease is considered one of the biggest concerns in public health in Latin America. In Chile, the main vectors involved in the transmission of T. cruzi are arthropods of the Triatominae subfamily. Moreover, another main transmission way is through of vectors by fecal-urine way, however, oral way also has been described among others transmission form.

Objectives: In order to get understand outbreaks of Chagas-disease, we search for possible relationships between the frequency of cases in the Chilean population and atmospheric oscillations.

Methods: We explored the two most important atmospheric oscillations in the Southern Hemisphere: southern oscillation index (SOI) and Antarctic oscillation (AAO), during the available years with official data. Because the number of migrant people born outside from Chile increasing significantively between 2014 and 2018, we used for the analysis two different periods from data available official data: (i) 2001 to 2014, (ii) 2001 to 2017.

Findings: For both periods we observed a significant and positive relation between AAO one year before. However, for the 2001 to 2014 period positive SOI one year before, which is related with La Niña phases, was the more important variable.

Main Conclusions: The Chagas disease frequency per year in Chile was found to depend mainly on SOI in previous year, whose values can be determined one year in advance. Therefore, it is possible to partially forecast annual frequency patterns. This could have important applications in public health strategies and for allocating resources for the management of the disease.
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http://dx.doi.org/10.1590/0074-02760180569DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6548492PMC
August 2019

A Simple and Efficient Method for the Partial Synthesis of Pure (3,3')-Astaxanthin from (3,3',6')-Lutein and Lutein Esters via (3,3')-Zeaxanthin and Theoretical Study of Their Formation Mechanisms.

Molecules 2019 Apr 9;24(7). Epub 2019 Apr 9.

Posgrado en Ciencias Químico Biológicas, Faculty of Chemistry, Autonomous University of Querétaro, Querétaro 76010, Mexico.

Carotenoids are natural compounds that have important roles in promoting and maintaining human health. Synthetic astaxanthin is a highly requested product by the aquaculture industry, but natural astaxanthin is not. Various strategies have been developed to synthesize this carotenoid. Nonetheless, these approaches have not only provided limited global yields, but its main commercial source also carries several health risks for humans. In this contribution, the one-pot base-catalyzed reaction of (3,3',6')-lutein () esters has resulted in a successful isomerization process to easily obtain up to 95% meso-zeaxanthin (), which in turn is oxidized to (3,3')-astaxanthin () with a global yield of 68%. The same oxidation performed with UV irradiation (365 nm) for 5 min provided the highest global yield (76%). These chemical transformations have also been achieved with a significant reduction of the health risks associated with its potential human consumption. Furthermore, this is the first time only one of the configurational isomers has been obtained semisynthetically. The poorly understood formation mechanisms of these two compounds were also investigated using Density-Functional Theory (DFT) calculations. These theoretical studies revealed that the isomerization involves a base-catalyzed deprotonation at C-6', followed by C-4' protonation, while the oxidation occurs via free radical mechanisms.
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http://dx.doi.org/10.3390/molecules24071386DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6480186PMC
April 2019

Using opportunistic sightings to infer differential spatio-temporal use of western Mediterranean waters by the fin whale.

PeerJ 2019 29;7:e6673. Epub 2019 Mar 29.

Centro Oceanográfico de Canarias, Instituto Español de Oceanografía, Santa Cruz de Tenerife, Spain.

The fin whale () is a cosmopolitan species with a resident population in the Mediterranean Sea. Due to its habitat, open seas often far from ports and airfields, and its long-distance migratory behaviour, studying and monitoring its distribution is costly. Currently, many opportunistic sightings (OS) reports are available, which provide a source of potentially useful, low-cost information about the spatio-temporal distribution of this species. Since 1993, the Spanish Institute of Oceanography has compiled a dataset comprising 874 records of OS of nine species of cetaceans in the western Mediterranean Sea and adjacent waters. The aim of this study was to use this dataset to investigate the differential use of these waters by the fin whale when compared with other cetaceans. We compared the presence of fin whales with the presence of any other cetacean species in the dataset. Binary logistic regression was then used to model these occurrences according to several spatio-temporal variables expected to reflect their habitat use. Several significant models reveal that fin whales are more prone than other cetaceans to use the waters over the slope of the Gulf of Lion in summer. This finding confirms that the Gulf of Lion is an area of importance for this species and suggests that the slope of the continental shelf could be particularly important. Our study shows how OS can be a source of useful information when appropriately analyzed.
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http://dx.doi.org/10.7717/peerj.6673DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6442671PMC
March 2019

North Atlantic Oscillation drives the annual occurrence of an isolated, peripheral population of the brown seaweed in the Western Mediterranean Sea.

PeerJ 2017 14;5:e4048. Epub 2017 Nov 14.

Departamento de Biología Vegetal (Botánica), Facultad de Ciencias, Universidad de Málaga, Málaga, Spain.

The canopy-forming, intertidal brown (Phaeophyceae) seaweed is distributed along the cold-temperate and warm-temperate coasts of Europe and North Africa. Curiously, an isolated population develops at Punta Calaburras (Alboran Sea, Western Mediterranean) but thalli are not present in midsummer every year, unlike the closest (ca. 80 km), perennial populations at the Strait of Gibraltar. The persistence of the alga at Punta Calaburras could be due to the growth of resilient, microscopic stages as well as the arrival of few-celled stages originating from neighbouring localities, and transported by the permanent Atlantic Jet flowing from the Atlantic Ocean into the Mediterranean. A twenty-six year time series (from 1990 to 2015) of midsummer occurrence of thalli at Punta Calaburras has been analysed by correlating with oceanographic (sea surface temperature, an estimator of the Atlantic Jet power) and climatic factors (air temperature, rainfall, and North Atlantic Oscillation -NAO-, and Arctic Oscillation -AO- indexes). The midsummer occurrence of thalli clustered from 1990-1994 and 1999-2004, with sporadic occurrences in 2006 and 2011. Binary logistic regression showed that the occurrence of thalli at Punta Calaburras in midsummer is favoured under positive NAO index from April to June. It has been hypothesized that isolated population of should show greater stress than their congeners of permanent populations, and to this end, two approaches were used to evaluate stress: one based on the integrated response during ontogeny (developmental instability, based on measurements of the fractal branching pattern of algal thalli) and another based on the photosynthetic response. Although significant differences were detected in photosynthetic quantum yield and water loss under emersion conditions, with thalli from Punta Calaburras being more affected by emersion than those from Tarifa, the developmental instability showed that the population from Tarifa suffers higher stress during ontogeny than that from Punta Calaburras. In conclusion, this study demonstrates the teleconnection between atmospheric oscillations and survival and proliferation of marine macroalgae.
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http://dx.doi.org/10.7717/peerj.4048DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5691785PMC
November 2017

Historical and ecological drivers of the spatial pattern of Chondrichthyes species richness in the Mediterranean Sea.

PLoS One 2017 13;12(4):e0175699. Epub 2017 Apr 13.

Centro Oceanográfico de Málaga, Instituto Español de Oceanografía (IEO), Fuengirola, Spain.

Chondrichthyes, which include Elasmobranchii (sharks and batoids) and Holocephali (chimaeras), are a relatively small group in the Mediterranean Sea (89 species) playing a key role in the ecosystems where they are found. At present, many species of this group are threatened as a result of anthropogenic effects, including fishing activity. Knowledge of the spatial distribution of these species is of great importance to understand their ecological role and for the efficient management of their populations, particularly if affected by fisheries. This study aims to analyze the spatial patterns of the distribution of Chondrichthyes species richness in the Mediterranean Sea. Information provided by the studied countries was used to model geographical and ecological variables affecting the Chondrichthyes species richness. The species were distributed in 16 Operational Geographical Units (OGUs), derived from the Geographical Sub-Areas (GSA) adopted by the General Fisheries Commission of the Mediterranean Sea (GFCM). Regression analyses with the species richness as a target variable were adjusted with a set of environmental and geographical variables, being the model that links richness of Chondrichthyes species with distance to the Strait of Gibraltar and number of taxonomic families of bony fishes the one that best explains it. This suggests that both historical and ecological factors affect the current distribution of Chondrichthyes within the Mediterranean Sea.
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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0175699PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5391105PMC
April 2017

Chiral polymers of intrinsic microporosity: selective membrane permeation of enantiomers.

Angew Chem Int Ed Engl 2015 Sep;54(38):11214-8

Department of Chemistry, University of California, Irvine, Irvine, CA 92697 (USA).

Following its resolution by diastereomeric complexation, 5,5',6,6'-tetrahydroxy-3,3,3',3'-tetramethyl-1,1'-spirobisindane (TTSBI) was used to synthesize a chiral ladder polymer, (+)-PIM-CN. (+)-PIM-COOH was also synthesized by the acid hydrolysis of (+)-PIM-CN. Following characterization, both (+)-PIM-CN and (+)-PIM-COOH were solvent cast directly into semipermeable membranes and evaluated for their ability to enable the selective permeation of a range of racemates, including mandelic acid (Man), Fmoc-phenylalanine, 1,1'-bi-2-naphthol (binol), and TTSBI. High ee values were observed for a number of analytes, and both materials exhibited high permeation rates. A selective diffusion-permeation mechanism was consistent with the results obtained with these materials. Their high permeability, processability, and ease of chemical modification offer considerable potential for liquid-phase membrane separations and related separation applications.
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http://dx.doi.org/10.1002/anie.201504934DOI Listing
September 2015

Interannual differences for sea turtles bycatch in Spanish longliners from Western Mediterranean Sea.

ScientificWorldJournal 2014 10;2014:861396. Epub 2014 Feb 10.

Biogeography, Diversity, and Conservation Research Team, Department of Animal Biology, University of Málaga, 29071 Málaga, Spain.

Recent studies showed that regional abundance of loggerhead and leatherback turtles could oscillate interannually according to oceanographic and climatic conditions. The Western Mediterranean is an important fishing area for the Spanish drifting longline fleet, which mainly targets swordfish, bluefin tuna, and albacore. Due to the spatial overlapping in fishing activity and turtle distribution, there is an increasing sea turtle conservation concern. The main goal of this study is to analyse the interannual bycatch of loggerhead and leatherback turtles by the Spanish Mediterranean longline fishery and to test the relationship between the total turtle by-catch of this fishery and the North Atlantic Oscillation (NAO). During the 14 years covered in this study, the number of sea turtle bycatches was 3,940 loggerhead turtles and 8 leatherback turtles, 0.499 loggerhead turtles/1000 hooks and 0.001014 leatherback turtles/1000 hooks. In the case of the loggerhead turtle the positive phase of the NAO favours an increase of loggerhead turtles in the Western Mediterranean Sea. However, in the case of leatherback turtle the negative phase of the NAO favours the presence of leatherback turtle. This contraposition could be related to the different ecophysiological response of both species during their migration cycle.
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http://dx.doi.org/10.1155/2014/861396DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3934524PMC
December 2014

Modelling favourability for invasive species encroachment to identify areas of native species vulnerability.

ScientificWorldJournal 2014 21;2014:519710. Epub 2014 Jan 21.

Departamento de Biología Animal, Facultad de Ciencias, Universidad de Málaga, 29071 Málaga, Spain.

We assessed the vulnerability of the native Mediterranean pond turtle to encroachment by the invasive red-eared slider in southern Spain. We first obtained an ecogeographical favourability model for the Mediterranean pond turtle. We then modelled the presence/absence of the red-eared slider in the Mediterranean pond turtle range and obtained an encroachment favourability model. We also obtained a favourability model for the red-eared slider using the ecogeographical favourability for the Mediterranean pond turtle as a predictor. When favourability for the Mediterranean pond turtle was high, favourability for the red-eared slider was low, suggesting that in these areas the Mediterranean pond turtle may resist encroachment by the red-eared slider. We also calculated favourability overlap between the two species, which is their simultaneous favourability. Grids with low overlap had higher favourability values for the Mediterranean pond turtle and, consequently, were of lesser conservation concern. A few grids had high values for both species, being potentially suitable for coexistence. Grids with intermediate overlap had similar intermediate favourability values for both species and were therefore areas where the Mediterranean pond turtle was more vulnerable to encroachment by the red-eared slider. We mapped the favourability overlap to provide a map of vulnerability of the Mediterranean pond turtle to encroachment by the red-eared slider.
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http://dx.doi.org/10.1155/2014/519710DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3956645PMC
November 2015

Combined effects of the North Atlantic Oscillation and the Arctic Oscillation on sea surface temperature in the Alborán Sea.

PLoS One 2013 18;8(4):e62201. Epub 2013 Apr 18.

Universidad de Málaga, Departamento Biología Animal, Málaga, Spain.

We explored the possible effects of the North Atlantic Oscillation (NAO) and Arctic Oscillation (AO) on interannual sea surface temperature (SST) variations in the Alborán Sea, both separately and combined. The probability of observing mean annual SST values higher than average was related to NAO and AO values of the previous year. The effect of NAO on SST was negative, while that of AO was positive. The pure effects of NAO and AO on SST are obscuring each other, due to the positive correlation between them. When decomposing SST, NAO and AO in seasonal values, we found that variation in mean annual SST and mean winter SST was significantly related to the mean autumn NAO of the previous year, while mean summer SST was related to mean autumn AO of the previous year. The one year delay in the effect of the NAO and AO on the SST could be partially related to the amount of accumulated snow, as we found a significant correlation between the total snow in the North Alborán watershed for a year with the annual average SST of the subsequent year. A positive AO implies a colder atmosphere in the Polar Regions, which could favour occasional cold waves over the Iberian Peninsula which, when coupled with precipitations favoured by a negative NAO, may result in snow precipitation. This snow may be accumulated in the high peaks and melt down in spring-summer of the following year, which consequently increases the runoff of freshwater to the sea, which in turn causes a diminution of sea surface salinity and density, and blocks the local upwelling of colder water, resulting in a higher SST.
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http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0062201PLOS
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3630154PMC
December 2013

The North Atlantic Oscillation affects the quality of Cava (Spanish sparkling wine).

Int J Biometeorol 2013 May 24;57(3):493-6. Epub 2012 Jul 24.

Biogeography, Diversity, and Conservation Research Team, Department of Animal Biology, University of Malaga, Malaga, Spain.

This study explores the possible effects of the North Atlantic Oscillation (NAO) on the quality of Spanish Cava. We found a significant negative relationship between the mean NAO for the months of March through August of each year between 1970 and 2008 and the probability of obtaining a top quality Cava. The NAO is associated with temperature and rainfall variations in the Cava region, which affect vine physiological processes during grape maturity. The probability of obtaining a top quality Cava was highest when the mean value of the NAO was negative, which causes the mean temperature in the Cava area to decrease, with positive consequences on Cava quality. Although the overall discrimination capacity and explanatory power of the model were low, 80% of clearly favorable years were classified correctly as corresponding to top quality Cava, and 70% of clearly unfavorable years were classified correctly as non top quality Cava.
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http://dx.doi.org/10.1007/s00484-012-0573-3DOI Listing
May 2013

Dolphinfish bycatch in Spanish Mediterranean large pelagic longline fisheries, 2000-2010.

ScientificWorldJournal 2012 12;2012:104389. Epub 2012 Mar 12.

Centro Oceanográfico de Málaga, Instituto Español de Oceanografía, Puerto Pesquero Fuengirola, Málaga, 29640 Fuengirola, Spain.

The aim of this paper is to describe the dolphinfish bycatch rates in the longline fisheries of the Western Mediterranean and modelling the nominal bycatch abundance and distribution of dolphinfish from the Spanish Mediterranean as a function of technical, geographical, and seasonality factors. Our results indicate that the impact of the pelagic and semipelagic longline on the dolphinfish population is relatively low (1.083 fishes per 1000 hooks), in contrast with the greater effect on the target species population. We obtained a statistically significant logistic model, with the following factors: technical characteristics of the fishery, geographical location, and seasonality. Drifting surface longliners targeting albacore is the gear with the highest effect on Mediterranean dolphinfish population. The technical characteristics of the fishery and seasonality factors have an important role in explaining the absence or presence of dolphinfish bycatch in the different boat strata, gear types, and seasons. Moreover, sea surface temperature and lunar phases also present additional explanations. Lunar phase as SST has been frequently used as an explanatory variable affecting catch rates of dolphinfish.
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http://dx.doi.org/10.1100/2012/104389DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3334253PMC
July 2012

[Considerations on cesarean section as performed at the Instituto de Maternidad, 1928-1951].

Authors:
J JOSE BAEZ

Rev Obstet Ginecol Venez 1953 ;13(3):297-323

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May 2003
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