S100A12 protein as a porcine health status biomarker when quantified in saliva samples.

The S100A12 protein was validated as a biomarker of health status in porcine saliva samples using a semi-quantitative approach based on Western blotting in four healthy and sixteen diseased animals, and in four animals with severe respiratory disease during three days of antibiotic therapy. Afterwards, a non-competitive sandwich immunoassay was then developed, validated, and used to quantify S100A12 in clinical porcine samples, using 14 healthy and 25 diseased pigs. Finally, the S100A12 concentrations in the saliva of ten pigs with respiratory disease were monitored during antibiotic therapy. Diseased animals showed higher concentrations of S100A12 than healthy animals, and the high concentrations of S100A12 in pigs with respiratory distress were reduced after antimicrobial therapy. The assay developed showed good precision and accuracy, as well as a low limit of detection of 3.19 ng/mL. It was possible to store saliva samples at -20 °C, or even at 4 °C, for two weeks before analysis without losing the validity of the results. The concentrations of S100A12 observed in serum and saliva samples showed a moderately positive association with a correlation coefficient of 0.48. The concentrations of the new validated biomarker S100A12 are highly associated with the novel salivary biomarker of inflammation, adenosine deaminase, and moderately to highly associated with the total oxidant status. The results reported in this study provide a new way of evaluating inflammatory diseases in pigs using saliva samples, which should be further explored for disease prevention and monitoring in the field.

Influence of the circadian cycle, sex and production stage on the reference values of parameters related to stress and pathology in porcine saliva.

BACKGROUND: The concentration of biomarkers in saliva could be influenced by several factors not related to the specific condition under analyses, which should be considered for proper clinical interpretation. In the present study, the circadian rhythm of C-reactive protein (CRP), haptoglobin (Hp), Pig-MAP, S100A12, Cu, Zn, Adenosine deaminase (ADA), total protein (TP), total antioxidant capacity (TAC), total oxidant status (TOS), oxidative stress index (OSI), cortisol and α-amylase in saliva of 20 female and 20 male pigs was investigated. Moreover, the influence of sex and production phase (post-weaning, fattening and finishing) on the concentrations of biomarkers in a total of 414 healthy pigs was studied and the reference intervals for all salivary biomarkers were calculated accordingly. RESULTS: All parameters except Pig-MAP, OSI and α-amylase varied significantly along the daytime, and most of them peak around early afternoon (13-15 h). The cosinor analysis described the temporal dynamics of circadian rhythms for all parameters. The range values showed differences between male and female pigs in 8 out of the 13 biomarkers, with higher concentrations in females in comparison to male pigs. The influence of the production phase on the salivary concentrations was observed for all the biomarkers. The highest concentrations were observed for Pig-MAP, S100A12 and α-amylase in post-weaning animals, for TP in growing pigs and for OSI in finishing animals. Most of the sex-influenced biomarkers showed the highest concentrations at growing stages with some exceptions such as ADA or Hp that showed the peak at finishing and post-weaning stages respectively. CONCLUSIONS: It is necessary to establish the optimal daytime for routine saliva sampling to avoid circadian variations and for that end, the time interval between 10:00 a.m. to 12:00 a.m. is highly recommended. The factors sex and production phase influence the concentration of biomarkers and should be considered for proper biomarker interpretation. The reference intervals presented here for each salivary biomarker will help to correctly interpret the results of these analytes and contribute to the use of saliva as a non-invasive sample for the diagnosis and monitoring of the health status of swine farms.

The Connection Between Stress and Immune Status in Pigs: A First Salivary Analytical Panel for Disease Differentiation.

This paper analyzes the association between stress and immune response activations in different diseases, based on the salivary analytics. Moreover, a first attempt to discriminate between diseases was performed by principal component analysis. The salivary analytics consisted of the measurement of psychosocial stress (cortisol and salivary alpha-amylase) indicators, innate (acute phase proteins: C-reactive protein and haptoglobin), and adaptive immune (adenosine deaminase, Cu and Zn) markers and oxidative stress parameters (antioxidant capacity and oxidative status). A total of 107 commercial growing pigs in the field were divided into six groups according to the signs of disease after proper veterinary clinical examination, especially, healthy pigs, pigs with rectal prolapse, tail-biting lesions, diarrhea, lameness, or dyspnea. Associations between stress and immune markers were observed with different intensities. High associations (r = 0.61) were observed between oxidative stress markers and adaptive immune markers. On the other hand, moderate associations (r = 0.31-0.48) between psychosocial stress markers with both innate and adaptive immune markers were observed. All pathological conditions showed statistically significant differences in at least 4 out of the 11 salivary markers studied, with no individual marker dysregulated in all the diseases. Moreover, each disease condition showed differences in the degree of activation of the analyzed systems which could be used to create different salivary profiles. A total of two dimensions were selected through the principal component analysis to explain the 48.3% of the variance of our data. Lameness and rectal prolapse were the two pathological conditions most distant from the healthy condition followed by dyspnea. Tail-biting lesions and diarrhea were also far from the other diseases but near to healthy animals. There is still room for improvements, but these preliminary results displayed a great potential for disease detection and characterization using salivary biomarkers profiling in the near future.

A multi-herd study shows that saliva is more than a reflection of serum biomarkers in pigs.

This study evaluates if biomarkers of porcine health status in saliva samples is a mere reflection of serum to detect disease in pigs under field conditions. Four farms from the same commercial company were included to obtain samples from animals with different pathological conditions. A total of 10 healthy animals and 10-15 animals from each farm with clinical symptoms of the disease were sampled for paired saliva and blood during a veterinary clinical visit. The biomarker panel included acute-phase proteins (APPs), C-reactive protein (CRP), haptoglobin (Hp), an inflammatory marker, adenosine deaminase (ADA), the total antioxidant capacity (TAC), the levels of essential trace elements, copper (Cu) and zinc (Zn), and the measurement of the total protein content (TP). After detailed statistical analysis, the results showed that saliva could replace serum for APP measurements since a good agreement has been observed between the concentrations of APPs in both body fluids. For any other biomarker, no agreement between the concentrations quantified in serum and saliva samples was observed visually. However, salivary ADA and TP concentrations were statistically significantly higher in the diseased, whereas the statistical tests with serum concentrations were inconclusive. Furthermore, greater differentiation between healthy and diseased animals could be observed when the distribution of biomarkers was analysed in saliva than in other serum samples. The diagnostic power to discriminate between healthy and diseased pigs is similar in saliva and in serum samples. Preliminary regression models may offer an optimal combination of biomarkers for disease detection in saliva (Hp, CRP, and TAC) and serum (Hp, CRP, and Cu), which demands less labour, sample, and financial cost for saliva determinations. The contradictory results observed for TAC, Cu, and Zn levels between body fluids indicate a need for further studies. To sum up, saliva-based biomarkers instead of serum-based biomarkers could contribute to more efficient detection of diseased animals.

Prospective cohort study on the management and complications of peripheral venous catheter in patients hospitalised in internal medicine.

OBJECTIVE: To analyse compliance with the recommendations on the insertion-maintenance of peripheral venous catheter (PVC) and the incidence of complications according to the healthcare department that inserted the PVCs. PATIENTS AND METHODS: We conducted a prospective cohort follow-up study of PVCs, from their insertion in the emergency or internal medicine (IM) department until their withdrawal. RESULTS: We monitored 590 PVCs, 274 from the emergency department and 316 from IM. In terms of compliance with the process indicators, there was a cannulation rate in the antecubital fossa of 3.5 and 1.6 per 100 catheters-day (p < .001) in the emergency and IM departments, respectively. The sterile placement rates were 1.6 and 12.4 (p < .001), and the rate for transparent dressing was 2.1 and 11.5 (p < .001) per 100 catheters-day in the emergency and IM departments, respectively. The complications rates showed no differences between the departments. The most common complication was phlebitis (95 cases, 16.1%). CONCLUSIONS: Compliance with the insertion-maintenance recommendations for PVC showed differences between the departments; however, the incidence of complications was similar.

Estudio de cohortes prospectivo sobre el manejo y las complicaciones del catéter venoso periférico en pacientes ingresados en Medicina Interna / Prospective cohort study on the management and complications of peripheral venous catheter in patients hospitalised in Internal Medicine

Objetivo Analizar la adherencia a las recomendaciones de inserción-mantenimiento del catéter venoso periférico (CVP) y la incidencia de complicaciones según el servicio asistencial de inserción. Pacientes y métodos Estudio de cohortes prospectivo de seguimiento del CVP desde su inserción en Urgencias o Medicina Interna (MI) hasta su retirada. Resultados Se monitorizaron 590 CVP: 274 de Urgencias y 316 de MI. Entre la adherencia a indicadores de proceso destaca la tasa de canalización en fosa antecubital de 3,5 vs. 1,6 por 100 catéteres-día (p <0,001) en Urgencias y MI, respectivamente. La tasa de fijación estéril fue 1,6 vs. 12,4 (p <0,001) y el apósito transparente de 2,1 vs. 11,5 (p <0,001) por 100 catéteres-día en Urgencias y MI, respectivamente. Las tasas de complicaciones no mostraron diferencias entre los servicios. La más frecuente fue la flebitis 95 (16,1%). Conclusiones La adherencia a las recomendaciones de inserción-mantenimiento del CVP mostró diferencias entre servicios; sin embargo, la incidencia de complicaciones fue similar (AU)

Objective To analyse compliance with the recommendations on the insertion-maintenance of peripheral venous catheter (PVC) and the incidence of complications according to the healthcare department that inserted the PVCs. Patients and methods We conducted a prospective cohort follow-up study of PVCs, from their insertion in the emergency or internal medicine (IM) department until their withdrawal. Results We monitored 590 PVCs, 274 from the emergency department and 316 from IM. In terms of compliance with the process indicators, there was a cannulation rate in the antecubital fossa of 3.5 and 1.6 per 100 catheters-day (P<.001) in the emergency and IM departments, respectively. The sterile placement rates were 1.6 and 12.4 (P<.001), and the rate for transparent dressing was 2.1 and 11.5 (P<.001) per 100 catheters-day in the emergency and IM departments, respectively. The complications rates showed no differences between the departments. The most common complication was phlebitis (95 cases, 16.1%). Conclusions Compliance with the insertion-maintenance recommendations for PVC showed differences between the departments; however, the incidence of complications was similar (AU)

Prospective cohort study on the management and complications of peripheral venous catheters in patients hospitalised in Internal Medicine. / Estudio de cohortes prospectivo sobre el manejo y las complicaciones del catéter venoso periférico en pacientes ingresados en Medicina Interna.

OBJECTIVE: To analyse compliance with the recommendations on the insertion-maintenance of peripheral venous catheters (PVC) and the incidence of complications according to the healthcare department that inserted the PVCs. PATIENTS AND METHODS: We conducted a prospective cohort follow-up study of PVCs, from their insertion in the emergency or internal medicine (IM) department until their withdrawal. RESULTS: We monitored 590 PVCs, 274 from the emergency department and 316 from IM. In terms of compliance with the process indicators, there was a cannulation rate in the antecubital fossa of 3.5 and 1.6 per 100 catheters-day (P<.001) in the emergency and IM departments, respectively. The sterile placement rates were 1.6 and 12.4 (P<.001), and the rate for transparent dressing was 2.1 and 11.5 (P<.001) per 100 catheters-day in the emergency and IM departments, respectively. The complications rates showed no differences between the departments. The most common complication was phlebitis (95 cases, 16.1%). CONCLUSIONS: Compliance with the insertion-maintenance recommendations for PVC showed differences between the departments; however, the incidence of complications was similar.

Psoriasis linear y liquen estriado: una asociación rara entre dos dermatosis lineares / Linear psoriasis and lichen striatus: a rare association between two linear dermatoses

Resumen: La psoriasis linear y el liquen estriado son dos dermatosis de distribución linear por su localización sobre las líneas de Blaschko. Aunque estas dos enfermedades comparten algunas características, su asociación no es común y su diagnóstico en algunas ocasiones puede ser un reto. Presentamos el caso de una paciente pediátrica que desarrolló las dos patologías, con adecuada respuesta al tratamiento con corticoides tópicos.

Abstract: Linear Psoriasis and Lichen Striatus are known as linear dermatoses for their distribution along the Blaschko lines. Although they share some characteristics, their association is not common and accurate diagnosis can sometimes be a challenge. We present the case of a girl who develops two linear dermatoses, with adequate response to topical corticosteroids.

Methodology for Y Chromosome Capture: A complete genome sequence of Y chromosome using flow cytometry, laser microdissection and magnetic streptavidin-beads.

This study is a comparison of the efficiency of three technologies used for Y chromosome capture and the next-generation sequencing (NGS) technologies applied for determining its whole sequence. Our main findings disclose that streptavidin-biotin magnetic particle-based capture methodology offers better and a deeper sequence coverage for Y chromosome capture, compared to chromosome sorting and microdissection procedures. Moreover, this methodology is less time consuming and the most selective for capturing only Y chromosomal material, in contrast with other methodologies that result in considerable background material from other, non-targeted chromosomes. NGS results compared between two platforms, NextSeq 500 and SOLID 5500xl, produce the same coverage results. This is the first study to explore a methodological comparison of Y chromosome capture and genetic analysis. Our results indicate an improved strategy for Y chromosome research with applications in several scientific fields where this chromosome plays an important role, such as forensics, medical sciences, molecular anthropology and cancer sciences.

Compact focusing grating couplers for silicon horizontal slot waveguides.

In this Letter, we present the design, simulation (2D and 3D), fabrication, and experimental characterization of compact and fully etched focusing gratings for a horizontal slot waveguide based on a silicon nitride layer sandwiched between amorphous silicon and a silicon-on-insulator. The measured coupling losses are about 4 dB with a 3 dB bandwidth of 38 nm. The fully etched configuration allows the fabrication in a single lithography step.

Detection and first characterization of an uncommon haptoglobin in porcine saliva of pigs with rectal prolapse by using boronic acid sample enrichment.

Salivary glycoprotein profiles, obtained after boronic acid enrichment, were studied for the first time in pigs in order to search for specific overall alterations related to acute inflammatory condition. Five healthy pigs and five pigs suffering from rectal prolapse were used, and the levels of acute phase proteins were measured to determine the degree of inflammation of the animals. The enriched glycoprotein profiles, achieved by two-dimensional gel electrophoresis (2DE) were statistically evaluated and spots that appeared differentially regulated between states were subjected to MS analysis for protein identification. Spots from three unique proteins were identified: carbonic anhydrase VI (CA VI), α-1-antichymotrypsin and haptoglobin (Hp). CA VI appeared as two adjacent horizontal spot trains in the glycoprotein profile of healthy animals in its regular isoelectric points (pI). One spot of α-1-antichymotrypsin was found in saliva from pigs with rectal prolapse in an unusual basic pI, and was considered as a breakdown product. Hp was identified as several spot trains in saliva from pigs with rectal prolapse in an unusual alkaline pI and was consequently further investigated. SDS-PAGE and 2DE of paired serum and saliva samples combined with Western blot analysis showed that the unusual Hp position observed in saliva samples was absent in serum. Furthermore, N-glycans from serum and saliva Hp glycopatterns were evaluated from SDS-PAGE Hp bands and showed that the serum N-glycan distribution in Hp ß-chain was comparable in quantity and quality in both groups of animals. In saliva, no Hp ß-chain derived N-glycans could unambiguously be identified from this sample set, thus needing further detailed investigations in the future.

[Polarized light microscopy for evaluation of oocytes as a prognostic factor in the evolution of a cycle in assisted reproduction]. / Microscopia de luz polarizada para evaluación de ovocitos como factor pronóstico en la evolución de un ciclo de reproducción asistida.

BACKGROUND: Identification of the best embryos to transfer is a key element for success in assisted reproduction. In the last decade, several morphological criteria of oocytes and embryos were evaluated with regard to their potential for predicting embryo viability. The introduction of polarization light microscopy systems has allowed the visualization of the meiotic spindle and the different layers of the zona pellucida in human oocytes on the basis of birefringence in a non-destructive way. Conflicting results have been reported regarding the predictive value in ICSI cycles. OBJECTIVE: To assess the predictive ability of meiotic spindle and zona pellucida of human oocytes to implant by polarized microscopy in ICSI cycles. MATERIAL AND METHODS: Prospective and observational clinical study. 903 oocytes from 94 ICSI cycles were analyzed with polarized microscopy. Meiotic spindle visualization and zona pellucida birefringence values by polarized microscopy were correlated with ICSI cycles results. RESULTS: Meiotic spindle visualization and birefringence values of zona pellucida decreased in a direct basis with increasing age. In patients aged over the 35 years, the percentage of a visible spindle and mean zona pellucida birefringence was lower than in younger patients. Fertilization rate were higher in oocytes with visible meiotic spindle (81.3% vs. 64%; p < 0.0001), as well as embryo quality (47.4% vs. 39%; p=0.01). Fertilization rate was higher in oocytes with positive values of birefringence (77.5 % vs. 68.5% p=0.005) with similar embryo quality. Conception cycles showed oocytes with higher mean value of zona birefringence and visible spindle vs. no-conception cycles (p<0.05). CONCLUSIONS: Polarized light microscopy improves oocyte selection, which significantly impacts in the development of embryos with greater implantation potential. The use of polarized light microscopy with sperm selection methods, blastocyst culture and deferred embryo transfers will contribute to transfer fewer embryos without diminishing rates of live birth and single embryo transfer will be more feasible.

Changes in saliva biomarkers of stress and immunity in domestic pigs exposed to a psychosocial stressor.

A combination of salivary biomarkers measured at the same time, reflecting the different systems that are involved in the stress mechanism, could be the best tool for its evaluation. In this study, changes in a panel of salivary biomarkers of stress and immunity including chromogranin A (CgA), IgA, cortisol, testosterone, haptoglobin (Hp) and C-reactive protein (CRP), were evaluated. A total of 14 (7 control and 7 test) crossbred Duroc × (Landrace × Large White) males of 190 days of age were used for this experiment. The stress mechanism was evaluated after applying a psychosocial stressor model in 7 pigs, based on isolation and regrouping. Our results show that after of isolation, there was a significant (P<0.05) increase in salivary CgA and IgA. However, after regrouping, there was a significant increase (P<0.05) in salivary cortisol, testosterone and CgA. Salivary Hp and CRP concentrations did not significantly change after applying this stress model. This panel of salivary biomarkers could be used as a practical and non-invasive tool for reflecting the activity of different physiology systems involved in the stress response.

Application of acute phase protein measurements in meat extract collected during routine veterinary inspection at abattoirs.

The possible application of acute phase protein measurements of meat extract in porcine carcass inspection at abattoir, under routine conditions, was studied. Concentrations of two acute phase proteins, C-reactive protein and haptoglobin, were quantified in 357 samples from carcasses subjected to official veterinary inspection at slaughterhouses. Carcasses were classified according to their sanitary status in five groups of animals ranging from healthy animals, without any organ alteration (group 1), to completely condemned carcasses with gross alteration in several organic systems (group 5). The concentration of both acute phase proteins appeared significantly higher in groups 2 to 5 in comparison to group 1. Sensitivity of these proteins to detect animals with organ alterations was 86% when the values of both proteins were taken into account. The quantification of the levels of acute phase proteins could be of help during routine veterinary meat inspection by offering an objective tool for active disease detection.

Diagnostic accuracy of porcine acute phase proteins in meat juice for detecting disease at abattoir.

The aim of this work was to evaluate whether acute phase protein (APP) determinations could assist Official Veterinarians carrying out work in slaughterhouses. To test this hypothesis, the diagnostic accuracy of APP determinations in meat juice of pigs was analysed to differentiate between healthy and diseased pigs. One hundred and one pigs of two different origins were classified into two groups according to their health status (healthy and diseased pigs), which was determined by a veterinary clinical examination on the farm. To assess the pigs' immune status, against the main porcine diseases, serological analyses were monitored. A general idea of the degree of disease coverage was analysed by examining organ lesions postmortem. Haptoglobin (Hp) and C reactive protein (CRP) were measured in meat juice samples. 72.13 per cent of pigs appeared to be seropositive for the porcine respiratory and reproductive syndrome virus, and almost 86.2 per cent of them had concomitant infections with other pathogens, such as Porcine circovirus type 2 or Swine influenza virus. Median Hp and CRP concentrations were significantly higher in diseased animals at different stages of the production chain, when compared with levels found in healthy finishing pigs (P<0.0001). Receiver operating characteristic analysis showed the highest sensitivity-specificity pairs, nearly 80-90 per cent, at cut-off levels of 83 and 10 µg/ml for Hp and CRP determinations, respectively, with high AUCs 0.9. This cut-off could be useful for veterinary inspections at the time of slaughter, to differentiate between the carcase of a healthy animal and the carcase of an animal suffering from a systemic disease, which should be completely condemned.

Different stressors elicit different responses in the salivary biomarkers cortisol, haptoglobin, and chromogranin A in pigs.

Most commonly, salivary cortisol is used in pig stress assessment, alternative salivary biomarkers are scarcely studied. Here, salivary cortisol and two alternative salivary biomarkers, haptoglobin and chromogranin A were measured in a pig stress study. Treatment pigs (n = 24) were exposed to mixing and feed deprivation, in two trials, and compared to untreated controls (n = 24). Haptoglobin differed for feed deprivation vs control. Other differences were only found within treatment. Treatment pigs had higher salivary cortisol concentrations on the mixing day (P < 0.05). Chromogranin A concentrations were increased on the day of refeeding (P < 0.05). Haptoglobin showed a similar pattern to chromogranin A. Overall correlations between the salivary biomarkers were positive. Cortisol and chromogranin A were moderately correlated (r = 0.49, P < 0.0001), correlations between other markers were weaker. The present results indicate that different types of stressors elicited different physiological stress responses in the pigs, and therefore including various salivary biomarkers in stress evaluation seems useful.

Measurement of chromogranin A in porcine saliva: validation of a time-resolved immunofluorometric assay and evaluation of its application as a marker of acute stress.

The objective of this study was to develop and validate a time-resolved immunofluorometric assay (TR-IFMA) for porcine salivary chromogranin A (CgA) measurements, using a species-specific antibody, and evaluate its behaviour in an acute stress model. Polyclonal antibodies were produced in rabbits immunized with a synthetic porcine fragment of CgA359-379 and used to develop a sandwich TR-IFMA. This TR-IFMA was analytically validated and showed intra- and inter-assay coefficients of variation of 6.23% and 5.82%, respectively, an analytical limit of detection of 4.27 × 10-3 µg/ml and a limit of quantification of 24.5 × 10-3 µg/ml. The assay also demonstrated a high level of accuracy, as determined by linearity under dilution (r = 0.975) and recovery tests. When a model of experimental acute stress, in which animals were immobilized for 3 min with a nose snare (stressor stimulus), was applied, a significant increase (P < 0.05) in CgA levels in saliva was detected at 15 min post-stressor stimulus. These results indicate that the assay developed in this study could measure CgA in porcine saliva in a reliable way and that the concentrations of CgA in saliva samples of pigs increase after an acute stress situation.

Circadian pattern of acute phase proteins in the saliva of growing pigs.

The circadian rhythm of the acute phase proteins (APPs) haptoglobin (Hp) and C-reactive protein (CRP) was assessed in saliva samples from 18- and 21-week old pigs. Saliva was collected at 07.00, 11.00, 15.00 and 19.00 h on two consecutive days and the Hp and CRP concentrations were quantified using two species-specific, time-resolved immunofluorometric assays. Salivary Hp levels were significantly higher (P < 0.001) in the morning compared to late afternoon (0.68 and 0.37 µg/mL, respectively) although the magnitude of the difference was much lower than is produced by inflammatory conditions. No significant differences were observed in CRP concentrations. Although the concentration of both APPs was higher in the 21- compared to the 18-week old pigs (P < 0.0001), no differences were observed in the circadian rhythm of these APPs when the two age groups were compared. Animal gender did not influence the circadian pattern of either APP, although the mean salivary CRP levels were higher in females (P < 0.05).

Detection of potential markers for systemic disease in saliva of pigs by proteomics: a pilot study.

Animals with different health status have been studied in order to extend the knowledge about protein composition of porcine saliva samples and to discover potential salivary markers for systemic disease in porcine production. Clinical examination of animals was performed at farm level where 10 healthy pigs and 10 animals with evident clinical signs of disease were randomly selected. Saliva and blood samples were obtained and afterwards animals were humanely sacrificed to perform a complete necropsy. Levels of two acute phase proteins, haptoglobin and C-reactive protein, were used to identify possible active infections of the animals. Moreover, serological analysis, to the main porcine infectious diseases in the area, was performed. Salivary proteins were separated by two-dimensional gel electrophoresis followed by mass spectrometry for the identification of specific proteins. A total of 58 spots out of 75 were successfully identified by MS, which correspond to 20 unique proteins. Two different approaches were used to perform a statistical comparison of saliva protein patterns from healthy and diseased animals using the relative spot volume (% spot volume/total volume of all spot in the gel, approach "A") or taking also into account the total protein content of each saliva sample (µg of spot/mL of saliva, approach "B"). Both analyses showed three proteins in common that are differentially regulated between states. However, approach B was selected for biomarker searching since it gave an estimation of protein concentration and showed differential expression of proteins between both health states in a total of 10 proteins, which were up-regulated in disease. Mass spectrometric analysis identified those proteins as salivary lipocalin, lipocalin 1, double headed protease inhibitor protein, adenosine deaminase, haptoglobin, albumin fragments, S100-A8, S100-A9, S100-A12 and pancreatic alpha amylase. These proteins could be considered as potential salivary markers of disease.

Estudio poblacional de los prematuros en el Hospital Universitario de Guadalajara años 2010 / Population study of premature infants in the University Hospital of Guadalajara year 2010

En las unidades de neonatología llama poderosamente la atención el aumento de hijos de padres inmigrantes y el incremento del número de prematuros tardíos. Actualmente, uno de cada cinco nacimientos en España se puede atribuir a la población inmigrante. El 69% de las mujeres inmigrantes tiene entre 15 y 49 años, comparado con el 48% de las españolas. Mientras que la tasa de prematuridad se mantiene constante en un 7-8% , los prematuros tardíos se han incrementado un 13% desde el 2001 suponiendo los prematuros tardíos un 75% de todos ellos. La prematuridad es la principal causa de muerte en el primer mes de vida y la segunda causa de morbilidad fetal o neonatal tras las malformaciones congénitas. La tasa de morbimortalidad en esta población es más baja de la de prematuros de EG más baja, pero mayor que en los recién nacidos a término, presentando sobre todo alta tasa de mal adaptación pulmonar, membrana hialiina, apneas, inestabilidad térmica, hipoglucemia, hipocalcemia, anemia, ictericia, problemas neurológicos (el volumen cerebral en la semana 34ª es el 65% del término). La razón por la que han aumentado en número no es bien conocida. Una hipótesis sería el aumento en las técnicas de reproducción asistida, que generarían un incremento en el número de embarazos múltiples. La segunda hipótesis son los avances en la práctica obstétrica que han llevado a un incremento en el número de intervenciones médicas y quirúrgicas durante el embarazo (AU)

One out of five births actually in Spain is due to foreign parents, which is higher tan the proportion of immigrants in the whole population. This can be explained by a higher fecundity rate and because this population is younger than Spanish (69% of immigrants women have an age between 15 and 49, compare to 48% of Spanish women). The number of preterm births has increased too in the last years up to 7-8%, specially late preterm infants, (define by birth at 34 0/7 through 36 6/7 weeks gestation), which have increased a 13% from 2001. The characteristics of late-preterm infants predispose them to a higher risk of morbidity and mortality than term infant greater risk of respiratory distress, apnea, hypoglycemia, temperature instability, anemia, jaundice, feeding difficulties, cerebral palsy and neurodevelopmental handicaps. The reason for the increase in late-preterm births during the last decade is not well understood. One hypothesis is that it may be attributable to increased use of reproductive technologies, and an increase in multifetal pregnancies. An-other hypothesis is that advances is obstetric practice have led to an increase in surveillance and medical interventions during pregnancy (AU)