139 research outputs found
Nephrotic syndrome caused by Babesia spp. in a dog: A case repor
P?ginas. 91-99Un canino, macho, entero, de raza Weimaraner, de dos a?os de edad, es presentado a consulta por adelgazamiento progresivo y distensi?n abdominal en el transcurso de cuatro semanas. Al realizar examen cl?nico y las pruebas de laboratorio, se confirm? la presencia de s?ndrome nefr?tico y enfermedad renal cr?nica, posiblemente desencadenada por Babesia spp. El tratamiento se enfoc? en el control del hemopar?sito y manejo sintom?tico de las afecciones asociadas al s?ndrome. El presente documento expone un caso cl?nico de s?ndrome nefr?tico, su diagn?stico y tratamiento.ABSTRACT. A two-years-old canine intact male Weimaraner is presented to the veterinary clinic with a record of progressive weight loss and abdominal distension since 4 weeks ago. Clinical examination and laboratory tests confirmed the presence of nephrotic syndrome and chronic kidney disease, suspected to be caused by Babesia spp. The treatment was focused on the hemoparasites and reduction of ascites. In this report we discuss the nephrotic syndrome, its diagnosis and treatment
Longitudinal variability of size-fractionated N-2 fixation and DON release rates along 24.5 degrees N in the subtropical North Atlantic
Dinitrogen (N-2) fixation and dissolved organic nitrogen (DON) release rates were measured on fractionated samples (\u3e10 mu m and m) along 24.5 degrees N in the subtropical North Atlantic. Net N-2 fixation rates (N-2 assimilation into biomass) ranged from 0.01 to 0.4 nmol N L-1 h(-1), and DON release rates ranged from 0.001 to 0.09 nmol N L-1 h(-1). DON release represented approximate to 14% and approximate to 23% of \u3e10 mu m and (assimilation into biomass plus DON release), respectively. This implies that by overlooking DON release, N-2 fixation rates are underestimated. Net N-2 fixation rates were higher in the east and decreased significantly toward the west (r(s)=-0.487, p=0.002, and r(s)=-0.496, p=0.001, for the \u3e10 mu m and fractions, respectively). The sum of both fractions correlated with aerosol optical depth at 550 nm (AOD 550 nm) (r(s)=0.382, p=0.017) and phosphate (PO43-) concentrations (r(s)=0.453, p=0.018), suggesting an enhancement of diazotrophy as a response to aerosol inputs and phosphorus availability. In contrast, DON release was constant among size fractions and did not correlate with any of these variables. We also compared N-2 fixation rates obtained using the N-15(2) dissolved and bubble methods. The first gave average rates 50% (49% 39) higher than the latter, which supports the finding that previously published N-2 fixation rates are likely underestimated. We suggest that by combining N-2 fixation and DON release measurements using dissolved N-15(2), global N-2 fixation rates could increase enough to balance oceanic fixed nitrogen budget disequilibria
Barium bioaccumulation by bacterial biofilms and implications for Ba cycling and use of Ba proxies
Supplementary Information accompanies this paper at https://doi.org/10.1038/s41467-
018-04069-z.Data availability. The datasets generated during the current study are available
from the corresponding author.Ba proxies have been broadly used to reconstruct past oceanic export production. However,
the precise mechanisms underlying barite precipitation in undersaturated seawater are not
known. The link between bacterial production and particulate Ba in the ocean suggests that
bacteria may play a role. Here we show that under experimental conditions marine bacterial
biofilms, particularly extracellular polymeric substances (EPS), are capable of bioaccumulating
Ba, providing adequate conditions for barite precipitation. An amorphous P-rich phase
is formed at the initial stages of Ba bioaccumulation, which evolves into barite crystals. This
supports that in high productivity regions where large amounts of organic matter are subjected
to bacterial degradation, the abundant EPS would serve to bind the necessary Ba and
form nucleation sites leading to barite precipitation. This also provides new insights into
barite precipitation and opens an exciting field to explore the role of EPS in mineral precipitation
in the ocean.This study was supported by the European Regional Development Fund (ERDF) cofinanced
grant CGL2015-66830-R (MINECO Secretaría de Estado de Investigación,
Desarrollo e Innovación, Spain), Research Groups BIO 103 and RNM-179 (Junta de Andalucía), and the University of Granada (Unidad Científica de Excelencia UCEPP2016-05)
Phase transitions in tumor growth VI: Epithelial–Mesenchymal transition
Herewith we discuss a network model of the epithelial–mesenchymal transition (EMT) based on our previous proposed framework. The EMT appears as a “first order” phase transition process, analogous to the transitions observed in the chemical–physical field. Chiefly, EMT should be considered a transition characterized by a supercritical Andronov–Hopf bifurcation, with the emergence of limit cycle and, consequently, a cascade of saddle-foci Shilnikov's bifurcations. We eventually show that the entropy production rate is an EMT-dependent function and, as such, its formalism reminds the van der Waals equation.Fil: Guerra, A.. Universidad de La Habana; CubaFil: Rodriguez, D. J.. Universidad de La Habana; CubaFil: Montero, S.. Medical Sciences University Of Havana; CubaFil: Betancourt Mar, J. A.. Universidad de La Habana; CubaFil: Martín Pardo, Reinaldo Román. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - San Luis. Instituto de Investigaciones en Tecnología Química. Universidad Nacional de San Luis. Facultad de Química, Bioquímica y Farmacia. Instituto de Investigaciones en Tecnología Química; Argentina. Mexican Institute Of Complex Systems. Tamaulipas; MéxicoFil: Silva Lamar, Eduardo. Universidad de La Habana; CubaFil: Bizzarri, María Julia. Universidad de La Habana; CubaFil: Cocho, G.. Universidad Nacional Autónoma de México; MéxicoFil: Mansilla, R.. Universidad Nacional Autónoma de México; MéxicoFil: Nieto Villar, José Manuel. Universidad de La Habana; Cub
Patrones de abundancia de la macrofauna asociada a macroalgas marinas a largo de la Península Ibérica
macroalgae were studied on a spatial scale along the Iberian Peninsula. Nineteen
stations and four dominant algae were selected (intertidal zone: Corallina
elongata and Asparagopsis armata; subtidal zone: Stypocaulon scoparium and
Cladostephus spongiosus). Five environmental factors were also considered
(seawater temperature, conductivity, dissolved oxygen, turbidity and pH). The
Atlantic coast was characterized by lower temperature and conductivity as well
as higher values of oxygen and turbidity than the Mediterranean coast. A total
of 106274 macrofaunal specimens were sorted and examined (68% arthropods,
27% molluscs, 4% annelids and 1% echinoderms). Crustaceans were the dominant
group in all the macroalgae (ca. 80% in C. elongata and A. armata, ca.
50% in S. scoparium and C. spongiosus) followed by molluscs, which were
more abundant in the subtidal algae (ca. 40%) than in intertidal ones (ca.10%).
Abundance patterns of macrofauna along the Iberian Peninsula were similar in
the four studied algae. Most of crustaceans belonged to the order Amphipoda,
which showed high densities (>1000 ind/1000 ml algae) along the whole Peninsula;
isopods showed the highest abundances in the Atlantic, while tanaids,
cumaceans and decapods were more abundant in the Mediterranean. Among
molluscs, gasteropods showed highest abundances along the Atlantic coasts,
whereas bivalves showed higher densities along the MediterraneanSe llevó a cabo un estudio espacial de los patrones de abundancia y distribución
de la macrofauna asociada a macroalgas a lo largo de la Península
Ibérica. Se seleccionaron 19 estaciones y 4 algas dominantes (zona intermareal:
Corallina elongata y Asparagopsis armata; zona submareal: Stypocaulon scoparium
y Cladostephus spongiosus). Se consideraron también cinco variables
ambientales (temperatura del agua, conductividad, oxígeno disuelto, turbidez
y pH). La costa atlántica se caracterizó por valores más bajos de temperatura
y conductividad, y más altos de oxígeno y turbidez. Se examinaron 106274
individuos de la macrofauna (68% artrópodos, 27% moluscos, 4% anélidos y
1% equinodermos). Los crustáceos fueron dominantes en todas las macroalgas
(alrededor del 80% en C. elongata y A. armata, y en torno al 50% en S. scoparium
y C. spongiosus), seguidos por los moluscos, que fueron más abundantes
en el submareal (40%) que en el intermareal (10%). Los patrones de abundancia
de la macrofauna a lo largo de la Península Ibérica fueron similares en las
cuatro algas estudiadas. La mayoría de los crustáceos pertenecieron al orden
Amphipoda, que mostró densidades muy altas (>1000 ind/1000 ml alga) en toda
la Península; los isópodos mostraron las mayores densidades en el Atlántico,
mientras que los tanaidáceos, cumáceos y decápodos fueron más abundantes en
el Mediterráneo. Entre los moluscos, los gasterópodos mostraron abundancias
mayores en el Atlántico, mientras que los bivalvos dominaron en el Mediterráneo.
Teniendo en cuenta que todas las estaciones seleccionadas no tenían
influencia antrópica importante, los patrones de abundancia obtenidos podrían
explicarse en base a diferencias naturales en la temperatura del agua, oxígeno,
conductividad y turbidez, existiendo un gradiente transicional entre taxones de
aguas más cálidas (del norte de Africa y del Mediterráneo) y taxones de aguas
más frías (del Mar del Norte y el Ártico)
The Harvey–Bradshaw Index adapted to a mobile application compared with In-clinic assessment: the MediCrohn Study
[Abstract]
Objectives: Mobile apps are useful tools in e-health and self-management strategies in disease monitoring. We evaluated the Harvey–Bradshaw index (HBI) mobile app self-administered by the patient to see if its results agreed with HBI in-clinic assessed by a physician.
Methods: Patients were enrolled in a 4-month prospective study with clinical assessments at months 1 and 4. Patients completed mobile app HBI and within 48 h, HBI was performed by a physician (gold standard). HBI scores characterized Crohn's disease (CD) as remission <5 or active ≥5. We determined agreement per item and total HBI score and intraclass correlation coefficients (ICCs). Bland–Altman plot was performed. HBI changes in disease activity from month 1 to month 4 were determined.
Results: A total of 219 patients were enrolled. All scheduled assessments (385 pairs of the HBI questionnaire) showed a high percentage of agreement for remission/activity (92.4%, κ = 0.796), positive predictive value (PPV) for remission of 98.2%, and negative predictive value of 76.7%. High agreement was also found at month 1 (93.15%, κ = 0.82) and month 4 (91.5%, κ = 0.75). Bland–Altman plot was more uniform when the HBI mean values were <5 (remission). ICC values were 0.82, 0.897, and 0.879 in all scheduled assessments, 1 and 4 months, respectively.
Conclusions: We found a high percentage of agreement between patients' self-administered mobile app HBI and in-clinic physician assessment to detect CD activity with a remarkably high PPV for remission. The mobile app HBI might allow a strict control of inflammation by remote monitoring and flexible follow-up of CD patients. Reduction of sanitary costs could be possible
Late presentation of chronic HBV and HCV patients seeking first time specialist care in Spain: a 2-year registry review
Chronic viral hepatitis infection affects an estimated 325 million people globally. People who initiate treatment after significant disease progression face increased risk of severe liver complications and death. Data are scarce on the characteristics and risk factors of people who present late to care in Spain and globally. Data were collected from January 2018 to December 2019 to report late presentation (LP) to specialist care at 11 large university hospitals in Spain to assess related risk factors using a multivariable logistic regression model. 2290 (CHB = 505, CHC = 1785) patients were analysed, with 581 (25.2%) presenting late. Hepatitis C patients more frequently reported LP compared to hepatitis B patients (28.1% vs 15.0%; p < 0.001). Older age (p < 0.001), being male (p < 0.001), being Spanish-born (p < 0.001), and having an unknown origin of referral (p = 0.08) were associated with a higher likelihood of LP. Advanced liver disease was identified in 533 (23%) patients and late-stage liver disease in 124 (5.4%). LP, including with irreversible liver damage, to viral hepatitis specialist care is frequent in Spain, despite being a country with unrestricted treatment access. Initiatives to reduce LP should specifically target men, older individuals, foreign-born populations for CHB, and Spanish nationals for CHC.AP, TMW, JVL acknowledge support to ISGlobal from the Spanish Ministry of Science, Innovation and Universities through the “Centro de Excelencia Severo Ochoa 2019–2023” Programme (CEX2018-000806-S), and support from the Government of Catalonia through the CERCA Programme. CAP acknowledges support from the Secretaria d’Universitats i Recerca de la Generalitat de Catalunya and the European Social Fund as an AGAUR-funded PhD fellow
Strange particle production in proton-proton collisions at TeV with ALICE at the LHC
The production of mesons containing strange quarks (K, ) and both
singly and doubly strange baryons (, Anti-, and
+Anti-) are measured at central rapidity in pp collisions at
= 0.9 TeV with the ALICE experiment at the LHC. The results are
obtained from the analysis of about 250 k minimum bias events recorded in 2009.
Measurements of yields (dN/dy) and transverse momentum spectra at central
rapidities for inelastic pp collisions are presented. For mesons, we report
yields () of 0.184 0.002 stat. 0.006 syst. for K and
0.021 0.004 stat. 0.003 syst. for . For baryons, we find
= 0.048 0.001 stat. 0.004 syst. for , 0.047
0.002 stat. 0.005 syst. for Anti- and 0.0101 0.0020 stat.
0.0009 syst. for +Anti-. The results are also compared with
predictions for identified particle spectra from QCD-inspired models and
provide a baseline for comparisons with both future pp measurements at higher
energies and heavy-ion collisions.Comment: 33 pages, 21 captioned figures, 10 tables, authors from page 28,
published version, figures at
http://aliceinfo.cern.ch/ArtSubmission/node/387
Particle-yield modification in jet-like azimuthal di-hadron correlations in Pb-Pb collisions at = 2.76 TeV
The yield of charged particles associated with high- trigger
particles ( GeV/) is measured with the ALICE detector in
Pb-Pb collisions at = 2.76 TeV relative to proton-proton
collisions at the same energy. The conditional per-trigger yields are extracted
from the narrow jet-like correlation peaks in azimuthal di-hadron correlations.
In the 5% most central collisions, we observe that the yield of associated
charged particles with transverse momenta GeV/ on the
away-side drops to about 60% of that observed in pp collisions, while on the
near-side a moderate enhancement of 20-30% is found.Comment: 15 pages, 2 captioned figures, 1 table, authors from page 10,
published version, figures at
http://aliceinfo.cern.ch/ArtSubmission/node/350
Elliptic flow of charged particles in Pb-Pb collisions at 2.76 TeV
We report the first measurement of charged particle elliptic flow in Pb-Pb
collisions at 2.76 TeV with the ALICE detector at the CERN Large Hadron
Collider. The measurement is performed in the central pseudorapidity region
(||<0.8) and transverse momentum range 0.2< < 5.0 GeV/. The
elliptic flow signal v, measured using the 4-particle correlation method,
averaged over transverse momentum and pseudorapidity is 0.087 0.002
(stat) 0.004 (syst) in the 40-50% centrality class. The differential
elliptic flow v reaches a maximum of 0.2 near = 3
GeV/. Compared to RHIC Au-Au collisions at 200 GeV, the elliptic flow
increases by about 30%. Some hydrodynamic model predictions which include
viscous corrections are in agreement with the observed increase.Comment: 10 pages, 4 captioned figures, published version, figures at
http://aliceinfo.cern.ch/ArtSubmission/node/389
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