Experimental necrotizing enterocolitis using oral lipopolysaccharide and protective role of breastmilk. / Enterocolitis necrotizante experimental con lipopolisacárido oral y función protectora de la leche materna.

INTRODUCTION: Necrotizing enterocolitis (NEC) is a life-threatening condition that afflicts neonates. Breastfeeding has demonstrated to play a protective role against it. By administering lipopolysaccharides (LPS) orally in newborn rats (NBR), we have developed an experimental model to induce NEC-like gut damage. Our aim was to assess the macroscopic and microscopic appearance of the gut, to evaluate the presence of NEC and study the role of breast milk (BM). MATERIALS AND METHODS: NBR were divided into 3 groups: Group A (control, n= 10) remained with the mother, group B (LPS, n= 25) was isolated after birth, gavage-fed with special rat formula and oral LPS, then submitted to stress (hypoxia after gavage) and group c (BM, n= 12) was breastfed once after birth, then isolated, and submitted to stress like group B. On day 4, NBR were sacrificed, and intestine was harvested and assessed. RESULTS: In the control group NEC was not present either macroscopically or histologically. Both groups submitted to stress (B and C) presented a global incidence of NEC of 73%. Most of group B developed histologic signs of NEC (85%) and group C showed a statistically lower incidence of NEC (50%, p= 0.04), playing the BM a protective role against NEC (OR= 0.19; 95% CI: 0.40-0.904). CONCLUSION: Our model showed a significant incidence of NEC in NBR (73%) with the same protective role of BM as in newborn humans, achieving a reliable and reproducible experimental NEC model. This will allow us to investigate new potential therapeutic targets for a devastating disease that currently lacks treatment.

INTRODUCCION: La enterocolitis necrotizante (ECN) es una enfermedad potencialmente mortal que afecta a los neonatos, y frente a la que la leche materna ha demostrado tener un papel protector. Administrando lipopolisacáridos (LPS) por vía oral en ratas recién nacidas (RRN), hemos desarrollado un modelo experimental para inducir un daño intestinal similar al que provoca la ECN con objeto de evaluar el aspecto macroscópico y microscópico del intestino, y de ese modo, analizar la presencia de ECN y estudiar el papel que desempeña la leche materna (LM). MATERIAL Y METODOS: Las RRN se dividieron en tres grupos: el grupo A (control, n= 10) permaneció con su madre; el grupo B (LPS, n= 25) fue aislado tras el nacimiento, alimentado por sonda con una fórmula especial para ratas y LPS oral, y sometido a estrés (hipoxia tras sonda); y el grupo C (LM, n= 12) fue alimentado con leche materna tras el nacimiento y posteriormente aislado y sometido a estrés al igual que el grupo B. El día 4 se sacrificó a las RRN y se recuperaron sus intestinos para su posterior evaluación. RESULTADOS: En el grupo de control, no se observó ECN ni macroscópica ni histológicamente, mientras que los dos grupos sometidos a estrés (B y C) presentaron una incidencia global de la ECN del 73%. La mayoría de los sujetos del grupo B desarrollaron signos histológicos de ECN (85%), y los del grupo C registraron una incidencia de la ECN estadísticamente menor (50%, p= 0,04), lo que significa que la LM desempeña una función protectora frente a la ECN (OR= 0,19; IC 95%: 0,40-0,904). CONCLUSION: Nuestro modelo reveló una incidencia significativa de la ECN en RRN (73%), desempeñando la LM la misma función protectora que en el caso de los humanos recién nacidos, lo que significa que este modelo experimental de ECN es fiable y reproducible. Gracias a dicho logro, podremos investigar nuevos y potenciales objetivos terapéuticos para una peligrosa enfermedad que, a día de hoy, carece de tratamiento.

Purely robotic ileocystoplasty in children: why not? First case in Spain. / Ampliación vesical pediátrica mediante abordaje robótico puro: ¿por qué no? Primer caso en España.

INTRODUCTION: We present the first case of pediatric ileocystoplasty using a purely robotic approach in Spain. CASE REPORT: 12-year-old male with neurogenic bladder of low capacity and high pressures. After failure of conservative treatment, bladder augmentation with ileum patch was decided upon. Surgery was carried out using a purely robotic approach with 4 robotic and 2 accessory ports. Surgery duration was 380 minutes in total, without intraoperative complications. He was discharged 2 weeks after cystographic control. During 32-months follow-up, he has remained continent. DISCUSSION: The minimal invasion, surgical precision and ergonomics made the robotic approach an optimal option for complex surgical techniques. Given the little availability of the robot and the low pediatric volume, its standardization is a challenge. Our accumulated experience is consistent with the current literature and shows promising surgical and esthetic results. We hope this case report will contribute to the divulgation and progressive introduction of robotic surgery in our daily lives.

INTRODUCCION: Presentamos el primer caso de abordaje robótico pediátrico puro en España. CASO CLINICO: Varón de 12 años con vejiga neurógena de escasa capacidad y altas presiones sin respuesta al tratamiento conservador, abogando por una ileocistoplastia de aumento. Se lleva a cabo un abordaje robótico puro con 4 puertos robóticos y 2 accesorios, de 380 minutos de duración total sin complicaciones intraoperatorias. Es dado de alta a las 2 semanas previo control cistográfico. Tras 32 meses de seguimiento continúa continente. COMENTARIOS: La mínima invasión, mayor precisión y ergonomía del abordaje robótico, hacen de éste una opción óptima para técnicas quirúrgicas complejas. Dada la difícil disponibilidad del robot y el escaso volumen pediátrico, resulta un reto su normalización en este campo. Nuestra experiencia coincide con la literatura, mostrando resultados quirúrgicos y estéticos prometedores. Esperamos este reporte contribuya a la difusión e introducción progresiva de la cirugía robótica en nuestra rutina.

Enterocolitis necrotizante experimental con lipopolisacárido oral y función protectora de la lechematerna / Experimental necrotizing enterocolitis using oral lipopolysaccharide and protective role of breastmilk

Introducción: La enterocolitis necrotizante (ECN) es una enfermedad potencialmente mortal que afecta a los neonatos, y frente a laque la leche materna ha demostrado tener un papel protector. Administrando lipopolisacáridos (LPS) por vía oral en ratas recién nacidas(RRN), hemos desarrollado un modelo experimental para inducir undaño intestinal similar al que provoca la ECN con objeto de evaluarel aspecto macroscópico y microscópico del intestino, y de ese modo,analizar la presencia de ECN y estudiar el papel que desempeña laleche materna (LM). Material y métodos: Las RRN se dividieron en tres grupos: el grupoA (control, n= 10) permaneció con su madre; el grupo B (LPS, n=25)fue aislado tras el nacimiento, alimentado por sonda con una fórmulaespecial para ratas y LPS oral, y sometido a estrés (hipoxia tras sonda);y el grupo C (LM, n= 12) fue alimentado con leche materna tras elnacimiento y posteriormente aislado y sometido a estrés al igual que elgrupo B. El día 4 se sacrificó a las RRN y se recuperaron sus intestinospara su posterior evaluación. Resultados: En el grupo de control, no se observó ECN ni macroscópica ni histológicamente, mientras que los dos grupos sometidos aestrés (B y C) presentaron una incidencia global de la ECN del 73%.La mayoría de los sujetos del grupo B desarrollaron signos histológi-cos de ECN (85%), y los del grupo C registraron una incidencia de laECN estadísticamente menor (50%, p= 0,04), lo que significa que laLM desempeña una función protectora frente a la ECN (OR= 0,19; IC95%: 0,40-0,904). Conclusión: Nuestro modelo reveló una incidencia significativa dela ECN en RRN (73%), desempeñando la LM la misma función protectora que en el caso de los humanos recién nacidos, lo que significa que estemodelo experimental de ECN es fiable y reproducible. Gracias a dichologro, podremos investigar nuevos y potenciales objetivos terapéuticospara una peligrosa enfermedad que, a día de hoy, carece de tratamiento.(AU)

Introduction: Necrotizing enterocolitis (NEC) is a life-threateningcondition that afflicts neonates. Breastfeeding has demonstrated to playa protective role against it. By administering lipopolysaccharides (LPS)orally in newborn rats (NBR), we have developed an experimental modelto induce NEC-like gut damage. Our aim was to assess the macroscopicand microscopic appearance of the gut, to evaluate the presence of NECand study the role of breast milk (BM). Material and methods: NBR were divided into 3 groups: GroupA (control, n= 10) remained with the mother, group B (LPS, n= 25)was isolated after birth, gavage-fed with special rat formula and oralLPS, then submitted to stress (hypoxia after gavage) and group c (BM,n= 12) was breastfed once after birth, then isolated, and submitted tostress like group B. On day 4, NBR were sacrificed, and intestine washarvested and assessed. Results: In the control group NEC was not present either macroscopically or histologically. Both groups submitted to stress (B and C)presented a global incidence of NEC of 73%. Most of group B developedhistologic signs of NEC (85%) and group C showed a statistically lowerincidence of NEC (50%, p= 0.04), playing the BM a protective roleagainst NEC (OR= 0.19; 95% CI: 0.40- 0.904)Conclusion: Our model showed a significant incidence of NEC inNBR (73%) with the same protective role of BM as in newborn humans,achieving a reliable and reproducible experimental NEC model. This willallow us to investigate new potential therapeutic targets for a devastatingdisease that currently lacks treatment.(AU)

Ampliación vesical pediátrica mediante abordaje robótico puro: ¿por qué no? Primer caso en España / Purely robotic ileocystoplasty in children: why not? First case in Spain

Introducción: Presentamos el primer caso de abordaje robóticopediátrico puro en España. Caso clínico. Varón de 12 años con vejiga neurógena de escasacapacidad y altas presiones sin respuesta al tratamiento conservador,abogando por una ileocistoplastia de aumento. Se lleva a cabo un abordaje robótico puro con 4 puertos robóticos y 2 accesorios, de 380 minutosde duración total sin complicaciones intraoperatorias. Es dado de alta alas 2 semanas previo control cistográfico. Tras 32 meses de seguimientocontinúa continente. Comentarios: La mínima invasión, mayor precisión y ergonomíadel abordaje robótico, hacen de este una opción óptima para técnicasquirúrgicas complejas. Dada la difícil disponibilidad del robot y el escasovolumen pediátrico, resulta un reto su normalización en este campo.Nuestra experiencia coincide con la literatura, mostrando resultados quirúrgicos y estéticos prometedores. Esperamos este reporte contribuya a ladifusión e introducción progresiva de la cirugía robótica en nuestra rutina.(AU)

Introduction: We present the first case of pediatric ileocystoplastyusing a purely robotic approach in Spain. Case report: 12-year-old male with neurogenic bladder of low capacity and high pressures. After failure of conservative treatment, bladderaugmentation with ileum patch was decided upon. Surgery was carriedout using a purely robotic approach with 4 robotic and 2 accessoryports. Surgery duration was 380 minutes in total, without intraoperativecomplications. He was discharged 2 weeks after cystographic control.During 32-months follow-up, he has remained continent. Discussion. The minimal invasion, surgical precision and ergonomics made the robotic approach an optimal option for complex surgicaltechniques. Given the little availability of the robot and the low pediatricvolume, its standardization is a challenge. Our accumulated experienceis consistent with the current literature and shows promising surgical andesthetic results. We hope this case report will contribute to the divulga-tion and progressive introduction of robotic surgery in our daily lives.(AU)

Measurement of Electron-Neutrino Charged-Current Cross Sections on

Using an 185-kg NaI[Tl] array, COHERENT has measured the inclusive electron-neutrino charged-current cross section on ^{127}I with pion decay-at-rest neutrinos produced by the Spallation Neutron Source at Oak Ridge National Laboratory. Iodine is one the heaviest targets for which low-energy (≤50 MeV) inelastic neutrino-nucleus processes have been measured, and this is the first measurement of its inclusive cross section. After a five-year detector exposure, COHERENT reports a flux-averaged cross section for electron neutrinos of 9.2_{-1.8}^{+2.1}×10^{-40} cm^{2}. This corresponds to a value that is ∼41% lower than predicted using the MARLEY event generator with a measured Gamow-Teller strength distribution. In addition, the observed visible spectrum from charged-current scattering on ^{127}I has been measured between 10 and 55 MeV, and the exclusive zero-neutron and one-or-more-neutron emission cross sections are measured to be 5.2_{-3.1}^{+3.4}×10^{-40} and 2.2_{-0.5}^{+0.4}×10^{-40} cm^{2}, respectively.

Superconducting nonlinear transport in optically driven high-temperature K3C60.

Optically driven quantum materials exhibit a variety of non-equilibrium functional phenomena, which to date have been primarily studied with ultrafast optical, X-Ray and photo-emission spectroscopy. However, little has been done to characterize their transient electrical responses, which are directly associated with the functionality of these materials. Especially interesting are linear and nonlinear current-voltage characteristics at frequencies below 1 THz, which are not easily measured at picosecond temporal resolution. Here, we report on ultrafast transport measurements in photo-excited K3C60. Thin films of this compound were connected to photo-conductive switches with co-planar waveguides. We observe characteristic nonlinear current-voltage responses, which in these films point to photo-induced granular superconductivity. Although these dynamics are not necessarily identical to those reported for the powder samples studied so far, they provide valuable new information on the nature of the light-induced superconducting-like state above equilibrium Tc. Furthermore, integration of non-equilibrium superconductivity into optoelectronic platforms may lead to integration in high-speed devices based on this effect.

Comparative study of mechanical vs. manual circumcision in the pediatric population: An alternative to the conventional technique? / Estudio comparativo entre circuncisión mecánica y manual en población pediátrica: ¿una alternativa a la técnica convencional?

OBJECTIVE: Circumcision is one of the most common surgical procedures in pediatric surgery. Even though manual suture (MANS) is regarded as the gold standard technique, easy-to-use mechanical suture (MECS) devices have been recently developed, with better postoperative results in the adult population. The objective of our study was to compare the operating time and incidence of postoperative complications between both techniques in our environment. MATERIALS AND METHODS: A retrospective study of patients undergoing circumcision in our institution from October 2021 to December 2022 was carried out. Operating time and complications observed in the first 14 postoperative days (edema, hematoma, dehiscence) were analyzed according to the technique used (MANS vs. MECS) and patient age (< 12 and ≥ 12 years old). RESULTS: 173 patients (147 MANS, 26 MECS) were included. Mean operating time was significantly lower in MECS patients, both in patients < 12 years old (16 min vs. 10 min, p= 0.002) and in patients ≥ 12 years old (23 min vs. 12 min, p< 0.001). Regarding complications, MECS patients ≥ 12 years old had a lower rate of suture dehiscence (23.5% vs. 0%, p< 0.001), with no significant differences in the younger group. CONCLUSIONS: MECS circumcision is a simple and effective technique involving shorter operating times than MANS circumcision, regardless of age. It has a lower rate of complications in older children (≥ 12 years), which means it stands as a valid alternative to the conventional technique.

OBJETIVOS: La circuncisión es una de las intervenciones quirúrgicas más realizadas en cirugía pediátrica. Aunque la técnica con sutura manual (SMAN) se considera el gold standard, recientemente se han desarrollado dispositivos de sutura mecánica (SMEC) de fácil manejo y con mejores resultados postoperatorios en la población adulta. El objetivo de nuestro estudio es comparar el tiempo quirúrgico y la incidencia de complicaciones postoperatorias entre ambas técnicas en nuestro ámbito. MATERIAL Y METODOS: Estudio retrospectivo de pacientes circuncidados en nuestro centro entre octubre 2021 y diciembre 2022. Se analizó el tiempo quirúrgico y las complicaciones observadas en los primeros 14 días postoperatorios (edema, hematoma, dehiscencia), en función de la técnica empleada (SMAN vs SMEC) y la edad de los pacientes (< 12 y ≥ 12 años). RESULTADOS: Se incluyeron 173 pacientes (147 SMAN, 26 SMEC). El tiempo quirúrgico medio fue significativamente menor en los pacientes con SMEC, tanto en < 12 años (16 min vs. 10 min, p= 0,002) como en ≥ 12 años (23 min vs 12 min, p< 0,001). En cuanto a las complicaciones, los pacientes con SMEC del grupo ≥ 12 años presentaron menor tasa de dehiscencia de sutura (23,5% vs 0%, p< 0,001), sin observarse diferencias significativas en el grupo de menor edad. CONCLUSIONES: La circuncisión con SMEC es una técnica sencilla y eficaz, que precisa un tiempo quirúrgico más reducido que la sutura manual, independientemente de la edad. Presenta menor tasa de complicaciones en los niños de mayor edad (≥ 12 años), por lo que se plantea como una alternativa válida a la técnica clásica.

Estudio comparativo entre circuncisión mecánica y manual en población pediátrica: ¿una alternativa a la técnica convencional? / Comparative study of mechanical vs. manual circumcision in the pediatric population: An alternative to the conventional technique?

Objetivos: La circuncisión es una de las intervenciones quirúrgicas más realizadas en cirugía pediátrica. Aunque la técnica con suturamanual (SMAN) se considera el gold standard, recientemente se handesarrollado dispositivos de sutura mecánica (SMEC) de fácil manejo ycon mejores resultados postoperatorios en la población adulta. El objetivo de nuestro estudio es comparar el tiempo quirúrgico y la incidencia decomplicaciones postoperatorias entre ambas técnicas en nuestro ámbito.Material y métodos: Estudio retrospectivo de pacientes circuncidados en nuestro centro entre octubre 2021 y diciembre 2022. Se analizóel tiempo quirúrgico y las complicaciones observadas en los primeros14 días postoperatorios (edema, hematoma, dehiscencia), en funciónde la técnica empleada (SMAN vs SMEC) y la edad de los pacientes(< 12 y ≥ 12 años). Resultados: Se incluyeron 173 pacientes (147 SMAN, 26 SMEC).El tiempo quirúrgico medio fue significativamente menor en los pacientes con SMEC, tanto en < 12 años (16 min vs. 10 min, p= 0,002) comoen ≥ 12 años (23 min vs 12 min, p< 0,001). En cuanto a las complicaciones, los pacientes con SMEC del grupo ≥ 12 años presentaron menortasa de dehiscencia de sutura (23,5% vs 0%, p< 0,001), sin observarsediferencias significativas en el grupo de menor edad. Conclusiones: La circuncisión con SMEC es una técnica sencillay eficaz, que precisa un tiempo quirúrgico más reducido que la suturamanual, independientemente de la edad. Presenta menor tasa de complicaciones en los niños de mayor edad (≥ 12 años), por lo que se planteacomo una alternativa válida a la técnica clásica.(AU)

Objective: Circumcision is one of the most common surgical procedures in pediatric surgery. Even though manual suture (MANS) isregarded as the gold standard technique, easy-to-use mechanical suture(MECS) devices have been recently developed, with better postoperative results in the adult population. The objective of our study was tocompare the operating time and incidence of postoperative complicationsbetween both techniques in our environment.Materials and methods: A retrospective study of patients undergoing circumcision in our institution from October 2021 to December 2022was carried out. Operating time and complications observed in the first14 postoperative days (edema, hematoma, dehiscence) were analyzedaccording to the technique used (MANS vs. MECS) and patient age(< 12 and ≥12 years old).Results: 173 patients (147 MANS, 26 MECS) were included.Mean operating time was significantly lower in MECS patients, bothin patients < 12 years old (16 min vs. 10 min, p= 0.002) and in patients≥12 years old (23 min vs. 12 min, p< 0.001). Regarding complications,MECS patients ≥12 years old had a lower rate of suture dehiscence(23.5% vs. 0%, p< 0.001), with no significant differences in the youngergroup. Conclusions: MECS circumcision is a simple and effective technique involving shorter operating times than MANS circumcision, regardless of age. It has a lower rate of complications in older children (≥12years), which means it stands as a valid alternative to the conventionaltechnique.(AU)

Experimental testing of a prototype cantilevered liquid-nitrogen-cooled silicon mirror.

This report presents testing of a prototype cantilevered liquid-nitrogen-cooled silicon mirror. This mirror was designed to be the first mirror for the new soft X-ray beamlines to be built as part of the Advanced Light Source Upgrade. Test activities focused on fracture, heat transfer, modal response and distortion, and indicated that the mirror functions as intended.

La viruela del mono y el embarazo: una enfermedad olvidada y su impacto en la salud perinatal / Mpox and pregnancy: A neglected disease and its impact on perinatal health

Las infecciones virales durante el embarazo han sido una de las principales causas asociadas a problemas perinatales de gran importancia como lo son daños congénitos, síndromes neurológicos fetales, abortos y desenlaces adversos de la gestación. La infección por el virus de viruela del mono, causada por un Orthopoxvirus emparentado con el virus de la viruela humana, ha sido declarada por la Organización Mundial de la Salud en julio de 2022 una emergencia de salud global ante el gran número de casos surgidos fuera del área endémica habitual en África. Existe poca información sobre el impacto de la infección por el virus de la viruela del mono durante el embarazo, aunque las escasas evidencias disponibles muestran una alta tasa de daño fetal. En esta revisión se aborda el problema de la infección por el virus de la viruela del mono en mujeres embarazadas, proporcionando indicaciones para su prevención, su diagnóstico y su tratamiento (AU)

Viral infections during pregnancy have been one of the leading causes associated with significant perinatal problems, such as congenital defects, fetal neurological syndromes, stillbirths, and adverse pregnancy outcomes. The mpox virus infection, caused by an Orthopoxvirus related to the human smallpox virus, was declared a global health emergency by the World Health Organization in July 2022 due to the large number of cases emerging outside the usual endemic area in Africa. There is little information on the impact of mpox virus infection during pregnancy, although the limited evidence available shows a high rate of fetal harm. This review addresses the problem of mpox virus infection in pregnant women and provides indications for its prevention, diagnosis, and treatment (AU)

Transcriptome analysis of the binucleate ciliate Tetrahymena thermophila with asynchronous nuclear cell cycles.

Tetrahymena thermophila harbors two functionally and physically distinct nuclei within a shared cytoplasm. During vegetative growth, the "cell cycles" of the diploid micronucleus and polyploid macronucleus are offset. Micronuclear S phase initiates just before cytokinesis and is completed in daughter cells before onset of macronuclear DNA replication. Mitotic micronuclear division occurs mid-cell cycle, while macronuclear amitosis is coupled to cell division. Here we report the first RNA-seq cell cycle analysis of a binucleated ciliated protozoan. RNA was isolated across 1.5 vegetative cell cycles, starting with a macronuclear G1 population synchronized by centrifugal elutriation. Using MetaCycle, 3244 of the 26,000+ predicted genes were shown to be cell cycle regulated. Proteins present in both nuclei exhibit a single mRNA peak that always precedes their macronuclear function. Nucleus-limited genes, including nucleoporins and importins, are expressed before their respective nucleus-specific role. Cyclin D and A/B gene family members exhibit different expression patterns that suggest nucleus-restricted roles. Periodically expressed genes cluster into seven cyclic patterns. Four clusters have known PANTHER gene ontology terms associated with G1/S and G2/M phase. We propose that these clusters encode known and novel factors that coordinate micro- and macronuclear-specific events such as mitosis, amitosis, DNA replication, and cell division.

[Mpox and pregnancy: A neglected disease and its impact on perinatal health]. / La viruela del mono y el embarazo: una enfermedad olvidada y su impacto en la salud perinatal.

Viral infections during pregnancy have been one of the leading causes associated with significant perinatal problems, such as congenital defects, fetal neurological syndromes, stillbirths, and adverse pregnancy outcomes. The mpox virus infection, caused by an Orthopoxvirus related to the human smallpox virus, was declared a global health emergency by the World Health Organization in July 2022 due to the large number of cases emerging outside the usual endemic area in Africa. There is little information on the impact of mpox virus infection during pregnancy, although the limited evidence available shows a high rate of fetal harm. This review addresses the problem of mpox virus infection in pregnant women and provides indications for its prevention, diagnosis, and treatment.

Mpox and pregnancy: A neglected disease and its impact on perinatal health.

Viral infections during pregnancy have been one of the leading causes associated with significant perinatal problems, such as congenital defects, fetal neurological syndromes, stillbirths, and adverse pregnancy outcomes. The mpox virus infection, caused by an Orthopoxvirus related to the human smallpox virus, was declared a global health emergency by the World Health Organization in July 2022 due to the large number of cases emerging outside the usual endemic area in Africa. There is little information on the impact of mpox virus infection during pregnancy, although the limited evidence available shows a high rate of fetal harm. This review addresses the problem of mpox virus infection in pregnant women and provides indications for its prevention, diagnosis, and treatment.

Identification by molecular techniques of halophilic bacteria producing important enzymes from pristine area in Campeche, Mexico

Abstract Isla Arena is located in the coordinate 20° 70´ N - 90° 45´ W, from Campeche, Mexico. In these estuaries, the ocean mixes with fresh water, and ecosystems are concentrated where petenes and pink flamingos proliferate. Crustaceans and mollusks abound in the sea. Despite its enormous marine wealth, there are no studies carried out on which halophilic microorganisms are present in these waters. In this work, the diversity and structure of the microbial community was investigated through a metagenomics approach and corroborated for sequencing of 16S rRNA genes. It was found that the phylum Fimicutes predominates with more than 50%, in almost the same proportion of the class Bacilli and with almost 41% of relative abundance of the order Bacillales. The sequencing results showed that one of the samples presented a high percentage of similarity (99.75%) using the Nucleotide BLAST program with a peculiar microorganism: Bacillus subtilis. This microorganism is one of the best characterized bacteria among the gram-positive ones. Our results demonstrate that B. subtilis can be an efficient source of proteases, lipases and cellulases, from halophilic microbial communities located in poorly explored areas.

Resumo Isla Arena está localizada na coordenada 20°70N - 90°45W, de Campeche, México. Nesses estuários, o oceano se mistura com a água doce e os ecossistemas se concentram onde proliferam petenos e flamingos rosa. Crustáceos e moluscos abundam no mar. Apesar de sua enorme riqueza marinha, não há estudos realizados sobre a presença de microrganismos halofílicos nessas águas. Neste trabalho, a diversidade e estrutura da comunidade microbiana foram investigadas através de uma abordagem metagenômica e corroboradas para o sequenciamento de genes 16S rRNA. Verificou-se que o filo Fimicutes predomina com mais de 50%, quase na mesma proporção da classe Bacilli e com quase 41% de abundância relativa da ordem Bacillales. Os resultados do sequenciamento mostraram que uma das amostras apresentou alto percentual de similaridade (99,75%) pelo programa Nucleotide BLAST com um microrganismo peculiar: Bacillus subtilis. Nossos resultados demonstram que B. subtilis pode ser uma fonte eficiente de proteases, lipases e celulases, provenientes de comunidades microbianas halofílicas localizadas em áreas pouco exploradas.

Identification by molecular techniques of halophilic bacteria producing important enzymes from pristine area in Campeche, Mexico / Identificação por técnicas moleculares de bactérias halofílicas que produzem enzimas importantes em área intocada de Campeche, México

Abstract Isla Arena is located in the coordinate 20° 70´ N - 90° 45´ W, from Campeche, Mexico. In these estuaries, the ocean mixes with fresh water, and ecosystems are concentrated where petenes and pink flamingos proliferate. Crustaceans and mollusks abound in the sea. Despite its enormous marine wealth, there are no studies carried out on which halophilic microorganisms are present in these waters. In this work, the diversity and structure of the microbial community was investigated through a metagenomics approach and corroborated for sequencing of 16S rRNA genes. It was found that the phylum Fimicutes predominates with more than 50%, in almost the same proportion of the class Bacilli and with almost 41% of relative abundance of the order Bacillales. The sequencing results showed that one of the samples presented a high percentage of similarity (99.75%) using the Nucleotide BLAST program with a peculiar microorganism: Bacillus subtilis. This microorganism is one of the best characterized bacteria among the gram-positive ones. Our results demonstrate that B. subtilis can be an efficient source of proteases, lipases and cellulases, from halophilic microbial communities located in poorly explored areas.

Resumo Isla Arena está localizada na coordenada 20°70'N - 90°45'W, de Campeche, México. Nesses estuários, o oceano se mistura com a água doce e os ecossistemas se concentram onde proliferam petenos e flamingos rosa. Crustáceos e moluscos abundam no mar. Apesar de sua enorme riqueza marinha, não há estudos realizados sobre a presença de microrganismos halofílicos nessas águas. Neste trabalho, a diversidade e estrutura da comunidade microbiana foram investigadas através de uma abordagem metagenômica e corroboradas para o sequenciamento de genes 16S rRNA. Verificou-se que o filo Fimicutes predomina com mais de 50%, quase na mesma proporção da classe Bacilli e com quase 41% de abundância relativa da ordem Bacillales. Os resultados do sequenciamento mostraram que uma das amostras apresentou alto percentual de similaridade (99,75%) pelo programa Nucleotide BLAST com um microrganismo peculiar: Bacillus subtilis. Nossos resultados demonstram que B. subtilis pode ser uma fonte eficiente de proteases, lipases e celulases, provenientes de comunidades microbianas halofílicas localizadas em áreas pouco exploradas.

Implementing a pediatric robotic surgery program: future perspectives. / Implementación de un programa de cirugía robótica pediátrica. Perspectivas futuras.

INTRODUCTION: The minimally invasive approach using robotic technology is fully incorporated in the treatment of adult pathologies. The first international pediatric studies with a robotic approach date from 2002, and in Spain, from 2009. We present the implementation of a Pediatric Robotic Surgery program in our setting. MATERIALS AND METHODS: A proposal for the application of robotic technology in pediatrics was developed, and after the acquisition of a Da Vinci Xi system at our center, a program was initiated under the guidance of a pediatric surgeon experienced in this approach. RESULTS: 732 patients with a median age of 12 years (7 months-17 years) have been operated on since January 2019. 56% of the procedures were abdominal. 3 thoracic approaches and 11 urologic procedures were carried out. 1 conversion to open surgery was performed during a fundoplication. The median combined duration of abdominal and thoracic approaches was 155 minutes (70-380 minutes). There were no anesthetic or hemodynamic complications. The postoperative period in the cases in which the procedure was completed was uneventful, and patients were discharged after a median of 2 days (1-16 days). CONCLUSION: The main advantage of robotic procedures is the symmetrical movement in line with the surgeon's hands, which makes the learning curve shorter. In our experience, the robotic approach has allowed for greater precision in the surgical technique, favoring the patient's recovery.

INTRODUCCION: El abordaje mínimamente invasivo empleando tecnología robótica está plenamente incorporado a la patología del adulto. Las primeras series pediátricas internacionales con abordaje robótico datan del año 2002 y en España del 2009. Presentamos la implementación de un programa de Cirugía Robótica Pediátrica en nuestro centro. MATERIAL Y METODOS: Se elaboró una propuesta de aplicación de la tecnología robótica en el área pediátrica y tras la adquisición de una plataforma Da Vinci Xi en nuestro centro, se procedió al inicio del programa bajo la tutorización de un cirujano pediátrico experimentado en este abordaje. RESULTADOS: Se han intervenido 32 pacientes con una mediana de edad de 12 años (7 meses-17 años) desde enero de 2019. El 56% de los procedimientos fueron abdominales. Se realizaron tres abordajes torácicos y 11 procedimientos urológicos. Se realizó una conversión a cirugía abierta durante una fundoplicatura. La mediana de la duración en conjunto de los abordajes abdominales y torácicos fue de 155 minutos (70-380 minutos). No hubo complicaciones anestésicas ni hemodinámicas. El postoperatorio en los casos en los que se concluyó el procedimiento no presentó incidencias y el alta se realizó con una mediana de 2 días (1-16 días). CONCLUSION: La principal ventaja de los procedimientos robóticos es el movimiento simétrico en línea con las manos del cirujano, lo que hace que la curva de aprendizaje sea más corta. En nuestra experiencia, el abordaje robótico nos ha permitido una mayor precisión en la técnica quirúrgica favoreciendo la recuperación del paciente.

The Effects of Different Types of Exercise on Circulating Irisin Levels in Healthy Individuals and in People With Overweight, Metabolic Syndrome and Type 2 Diabetes.

Irisin is a myokine secreted during exercise. It has drawn the attention of researchers as it regulates several effects of exercise that are considered beneficial. It has also been proposed as a therapeutic tool to treat metabolic disorders. In recent years, the effect of different types of training on circulating irisin has been studied in large populations. An overall beneficial result has been shown, however, the outcome of the investigations has raised some controversy. Herein we evaluated the existing literature on the effects of different types of training on the circulating irisin levels in healthy subjects and in those displaying different metabolic condition. We conducted queries in the PubMed and Web of Science databases for literature published between January 2010 and January 2021. Thirty-seven original articles were retrieved and they were included in this review. Any letter to the editor, meta-analyses, reviews, and systematic review articles were excluded. From these 37 articles, 19 of them reported increased levels of circulating irisin. The interventions encompassed aerobic, resistance, combined, circuit, and interval training types. Such increase of circulating irisin was reported for healthy subjects and for those displaying different metabolic condition. A training that is steadily kept with a moderate to high intensity, including that characterized by brief highly intense intervals, were distinguishable from the rest. Nevertheless, the training effectiveness as evaluated by the increased circulating irisin levels depends on the subject's metabolic condition and age.

The innate immune stimulant Amplimune® is safe to administer to young feedlot cattle.

BACKGROUND: Infectious disease has a significant impact on livestock production. Availability of alternatives to antibiotics to prevent and treat disease is required to reduce reliance on antibiotics while not impacting animal welfare. Innate immune stimulants, such as mycobacterium cell wall fractions (MCWF), are used as alternatives to antibiotics for the treatment and prevention of infectious disease in a number of species including cattle, horses and dogs. This study aimed to evaluate the safety of Amplimune®, an MCWF-based immune stimulant, for weaner Angus cattle. METHODS: On day -1 and 0, sixty mixed-sex Angus weaner cattle were transported for 6 h before being inducted and housed in a large single pen, simulating feedlot induction conditions. The cattle were assigned to one of six treatment groups (n = 10 per group): 2 mL Amplimune intramuscularly (2IM); 2 mL Amplimune subcutaneously (2SC); 5 mL Amplimune intramuscularly (5IM); 5 mL Amplimune subcutaneously (5SC); 5 mL saline intramuscularly (SalIM) and 5 mL saline subcutaneously (SalSC) on day 0 following transportation. Body temperature, body weight, concentrations of circulating pro-inflammatory cytokines (TNFα, IL-1ß, IL-6 and IL-12) and haematology parameters were measured at various times up to 96 h post-treatment. RESULTS: No adverse effects from Amplimune treatment were observed. Amplimune induced an increase in circulating cytokine TNFα concentrations, total white blood cell count and lymphocyte counts indicative of activation of the innate immune system without causing an excessive inflammatory response. CONCLUSIONS: Results confirm that Amplimune can be safely administered to beef cattle at the dose rates and via the routes of administration investigated here.

Identification by molecular techniques of halophilic bacteria producing important enzymes from pristine area in Campeche, Mexico.

Isla Arena is located in the coordinate 20° 70´ N - 90° 45´ W, from Campeche, Mexico. In these estuaries, the ocean mixes with fresh water, and ecosystems are concentrated where petenes and pink flamingos proliferate. Crustaceans and mollusks abound in the sea. Despite its enormous marine wealth, there are no studies carried out on which halophilic microorganisms are present in these waters. In this work, the diversity and structure of the microbial community was investigated through a metagenomics approach and corroborated for sequencing of 16S rRNA genes. It was found that the phylum Fimicutes predominates with more than 50%, in almost the same proportion of the class Bacilli and with almost 41% of relative abundance of the order Bacillales. The sequencing results showed that one of the samples presented a high percentage of similarity (99.75%) using the Nucleotide BLAST program with a peculiar microorganism: Bacillus subtilis. This microorganism is one of the best characterized bacteria among the gram-positive ones. Our results demonstrate that B. subtilis can be an efficient source of proteases, lipases and cellulases, from halophilic microbial communities located in poorly explored areas.