Association of adiposity and its changes over time with COVID-19 risk in older adults with overweight/obesity and metabolic syndrome: a longitudinal evaluation in the PREDIMED-Plus cohort.

BACKGROUND: Cross-sectionally, older age and obesity are associated with increased coronavirus disease-2019 (COVID-19) risk. We assessed the longitudinal associations of baseline and changes in adiposity parameters with COVID-19 incidence in older adults at high cardiovascular risk. METHODS: This analysis included 6874 men and women (aged 55-75 years) with overweight/obesity and metabolic syndrome in the PREDIMED-Plus lifestyle intervention trial for cardiovascular risk reduction. Body weight, body-mass-index (BMI), waist circumference, waist-to-height ratio (WHtR), and a body shape index (ABSI) were measured at baseline and annual follow-up visits. COVID-19 was ascertained by an independent Event Committee until 31 December 2021. Cox regression models were fitted to evaluate the risk of COVID-19 incidence based on baseline adiposity parameters measured 5-6 years before the pandemic and their changes at the visit prior to censoring. RESULTS: At the time of censoring, 653 incident COVID-19 cases occurred. Higher baseline body weight, BMI, waist circumference, and WHtR were associated with increased COVID-19 risk. During the follow-up, every unit increase in body weight (HRadj (95%CI): 1.01 (1.00, 1.03)) and BMI (HRadj: 1.04 (1.003, 1.08)) was associated with increased COVID-19 risk. CONCLUSIONS: In older adults with overweight/obesity, clinically significant weight loss may protect against COVID-19. TRIAL REGISTRATION: This study is registered at the International Standard Randomized Controlled Trial (ISRCT; http://www.isrctn.com/ISRCTN89898870 ).

A systematic review on machine learning approaches in the diagnosis and prognosis of rare genetic diseases.

BACKGROUND: The diagnosis of rare genetic diseases is often challenging due to the complexity of the genetic underpinnings of these conditions and the limited availability of diagnostic tools. Machine learning (ML) algorithms have the potential to improve the accuracy and speed of diagnosis by analyzing large amounts of genomic data and identifying complex multiallelic patterns that may be associated with specific diseases. In this systematic review, we aimed to identify the methodological trends and the ML application areas in rare genetic diseases. METHODS: We performed a systematic review of the literature following the PRISMA guidelines to search studies that used ML approaches to enhance the diagnosis of rare genetic diseases. Studies that used DNA-based sequencing data and a variety of ML algorithms were included, summarized, and analyzed using bibliometric methods, visualization tools, and a feature co-occurrence analysis. FINDINGS: Our search identified 22 studies that met the inclusion criteria. We found that exome sequencing was the most frequently used sequencing technology (59%), and rare neoplastic diseases were the most prevalent disease scenario (59%). In rare neoplasms, the most frequent applications of ML models were the differential diagnosis or stratification of patients (38.5%) and the identification of somatic mutations (30.8%). In other rare diseases, the most frequent goals were the prioritization of rare variants or genes (55.5%) and the identification of biallelic or digenic inheritance (33.3%). The most employed method was the random forest algorithm (54.5%). In addition, the features of the datasets needed for training these algorithms were distinctive depending on the goal pursued, including the mutational load in each gene for the differential diagnosis of patients, or the combination of genotype features and sequence-derived features (such as GC-content) for the identification of somatic mutations. CONCLUSIONS: ML algorithms based on sequencing data are mainly used for the diagnosis of rare neoplastic diseases, with random forest being the most common approach. We identified key features in the datasets used for training these ML models according to the objective pursued. These features can support the development of future ML models in the diagnosis of rare genetic diseases.

Building capacity for World Trade Organization dispute settlement: piloting polarity mapping for trade relations.

Trade disputes have been on the rise in recent decades. Resolving these disputes can be challenging, even when relying on the World Trade Organization (WTO) formal dispute settlement system. Polarity mapping, a visual framework for understanding the challenges of organisational collaboration, could help to provide structure to these negotiations. This paper describes how polarity mapping was adapted to support or mitigate trade disputes related to the trade of animals or animal products. A three-step process allowed stakeholders to: identify the conditions affecting a trade relationship, use polarity mapping to identify priorities and challenges for continued trade relationships, and outline an action plan to support these relationships in the event of a disease outbreak. The tool was then tested, using an exploratory case study methodology. Polarity mapping was found to be both useful and practical for investigating how to improve trade relationships. The case-study participants were able to identify strategies, choices and decisions that moved them towards a more sustainable trade relationship. Further testing and iterative development of the tool in a current, real-life trade dispute would be beneficial. The hope is that, in the future, a simple tool such as polarity mapping could be used either to plan pre-emptively for trade challenges and thereby prevent disputes, or to provide a method for consultation within the formal WTO dispute settlement process.

Nous assistons depuis quelques décennies à une intensification des litiges en matière commerciale. La résolution de ces différends est une tâche difficile, même en recourant au système formel de règlement des différends de l'Organisation mondiale du commerce (OMC). La cartographie des polarités (méthode générant une représentation visuelle des difficultés rencontrées lors de la collaboration organisationnelle) pourrait contribuer à structurer ces négociations. Les auteurs expliquent comment la méthode des cartes des polarités a été adaptée afin d'étayer ou d'atténuer les différends commerciaux relatifs aux échanges internationaux d'animaux ou de produits d'origine animale. Dans la procédure en trois étapes qui leur a été proposée, les parties prenantes ont pu identifier les circonstances affectant une relation commerciale déterminée, utiliser la carte des polarités pour définir les priorités et les obstacles à la poursuite de ces relations commerciales et concevoir un plan d'action permettant de maintenir ces relations en cas de foyer de maladie. Dans un deuxième temps, l'outil a été testé en appliquant une méthodologie d'exploration d'études de cas. La cartographie des polarités s'est révélée une méthode à la fois utile et concrète pour rechercher les moyens d'améliorer les relations commerciales. Les participants aux études de cas ont pu déterminer quelles étaient les stratégies, les choix et les décisions susceptibles de les faire avancer vers des relations commerciales plus durables. Les auteurs estiment qu'il serait judicieux de continuer à tester l'outil lors d'applications itératives dans le contexte de différends commerciaux réels en cours de traitement. Ils espèrent qu'un outil aussi simple que les cartes des polarités puisse être utilisé à l'avenir, soit pour traiter de manière préventive les difficultés liées au commerce international afin d'éviter les différends, soit pour fournir un éclairage aux consultations dans le cadre du système formel de règlement des différends de l'OMC.

De unos decenios a esta parte, las controversias comerciales han ido en aumento. Resolver estos litigios puede ser harto complicado, aun pasando por el sistema oficial de solución de controversias de la Organización Mundial del Comercio (OMC). La elaboración de mapas de polaridad, que plasman en un esquema visual las dificultades de la colaboración organizativa, podría ser de ayuda para estructurar esas negociaciones. Los autores explican cómo se adaptó la elaboración de mapas de polaridad al objetivo de ayudar a resolver o paliar controversias relacionadas con el comercio de animales o productos de origen animal. Pasando por un proceso en tres etapas, los interlocutores pudieron: determinar las condiciones que afectan a la relación comercial; utilizar un mapa de polaridad para determinar las prioridades y los obstáculos para la continuidad de sus relaciones comerciales; y esbozar un plan de acción para afianzar esas relaciones en caso de brote infeccioso. Después se ensayó la herramienta empleando un método de estudio exploratorio de casos prácticos. La elaboración de mapas de polaridad fue juzgada a la vez útil y práctica para estudiar la manera de mejorar las relaciones comerciales. Los participantes en el estudio pudieron distinguir las estrategias, opciones y decisiones que los conducían a una relación comercial más duradera. Sería provechoso poder ensayar la herramienta y someterla a un proceso de desarrollo iterativo aplicándola a una controversia comercial real que esté hoy abierta. La esperanza para el futuro reside en poder emplear una herramienta tan sencilla como los mapas de polaridad bien preventivamente, para anticipar, y con ello evitar, problemas comerciales, o bien como método de consulta integrado en el proceso oficial de solución de controversias de la OMC.

Direct cost of lupus care in the developing world: the case of Colombia.

BACKGROUND: Lupus is a chronic autoimmune and incurable rheumatic disease and has a global prevalence of 3.2-517.5 cases per 100,000 people. However, currently there is no knowledge regarding the actual direct cost of patients with lupus to healthcare systems in developing countries. This study aimed to determine the direct cost of lupus care in Colombia. METHODS: To identify patients with lupus, claims data of 2 years from two health insurers were subjected to an algorithm according to International Statistical Classification of Diseases and Related Health Problems 10th Revision codes. Multivariate linear regression analyses were used to assess the direct cost of lupus care. RESULTS: The average annual per-patient, all-claims, all-cause direct cost was $2355; this is approximately 9 times the average annual premium received by health insurers for covering the public benefits package. Approximately 50% of direct costs are not included in the public benefits package. The incidence of one or more condition is 98.4%. The direct cost incurred by patients with two comorbidities was 1.8 times more, with three chronic conditions was 1.9 times more and with six chronic conditions was 4.5 times more than that incurred by patients with only lupus. CONCLUSIONS: The direct cost of lupus care in the developing world may be higher than expected; in addition, access to healthcare may not be equal for the entire population.

Use of a voluntary testing program to study the spatial epidemiology of Johne's disease affecting dairy herds in Minnesota: a cross sectional study.

BACKGROUND: One of the key steps in the management of chronic diseases in animals including Johne's disease (JD), caused by Mycobacterium avium subsp. paratuberculosis (MAP), is the ability to track disease incidence over space and time. JD surveillance in the U.S. dairy cattle is challenging due to lack of regulatory requirements, imperfect diagnostic tests, and associated expenses, including time and labor. An alternative approach is to use voluntary testing programs. Here, data from a voluntary JD testing program, conducted by the Minnesota Dairy Herd Improvement Association, were used to: a) explore whether such a program provides representative information on JD-prevalence in Minnesota dairy herds, b) estimate JD distribution, and, c) identify herd and environmental factors associated with finding JD-positive cows. Milk samples (n = 70,809) collected from 54,652 unique cows from 600 Minnesota dairy herds between November 2014 and April 2017 were tested using a MAP antibody ELISA. Participant representativeness was assessed by comparing the number of JD-tested herds with the number of herds required to estimate the true disease prevalence per county based on official statistics from the National Agricultural Statistical Services. Multivariable logistic regression models, with and without spatial dependence between observations, were then used to investigate the association between herd status to JD (positive/negative), as indicated by milk ELISA results, and available covariates at the herd level. RESULTS: Within the study population, at least one test-positive cow was found in 414 of 600 (69%) herds. Results indicated that large herds that test frequently and herds located in loamy or silt soils are more likely to have at least one MAP test-positive cow. After adjusting for herd size, testing frequency, and soil type, there was no spatial dependence in JD risk between neighboring dairies within 5 to 20 km. Furthermore, the importance of collecting data on herd management, feed, and biosecurity for insightful interpretations was recognized. The study suggested that, although limited, the voluntary testing database may support monitoring JD status. CONCLUSIONS: Results presented here help elucidate the spatial characteristics of JD in Minnesota and the study may ultimately contribute to the design and implementation of surveillance programs for the disease.

Transforming the One Health workforce: lessons learned from initiatives in Africa, Asia and Latin America.

The capacity to effectively and efficiently address threats to public and animal health requires an adequately trained workforce. A prerequisite for this is an effective plan for building the capacity of both private and public health workers. Yet capacity building and workforce development within One Health collaboration remain challenging for a number of reasons, including competing priorities, sectorspecific funding and a lack of trust and communication across sectors. Practical considerations, such as differences in language and culture, and working across time zones and geography, also have a considerable influence. Consequently, previous attempts to build capacity have traditionally lacked the attributes necessary for effective development and sustainability, such as continuity and systematic coordination of the learning process. Through the presentation and analysis of two recently implemented workforce development programmes, the authors highlight effective characteristics of workforce initiatives to build capacity. Such programmes can play a strategic role in developing, coordinating and supporting systematic and sustainable training for One Health and Veterinary Services performance on a regional and global scale.

La capacité d'apporter une réponse efficace et efficiente aux dangers qui menacent la santé publique et la santé animale est indissociable de l'existence de ressources humaines dotées d'un niveau de formation adéquat. Pour garantir ce niveau il est nécessaire de planifier au préalable le renforcement des capacités des personnels des secteurs public et privé de la santé. Le développement des capacités et des compétences des ressources humaines dans le cadre d'une collaboration Une seule santé demeure toutefois une entreprise difficile pour plusieurs raisons, notamment la concurrence entre priorités, le caractère spécifiquement sectoriel de certains financements et le manque de confiance et de communication entre secteurs. Des considérations pratiques peuvent également avoir une influence considérable, par exemple les différences de langue et de culture et le fait de travailler dans des fuseaux horaires et des contextes géographiques différents. Par le passé, les tentatives de renforcement des capacités étaient dépourvues des attributs indispensables à un développement efficace et durable, en particulier la continuité et la coordination systématique du processus d'apprentissage. À travers la description et l'analyse de deux programmes récents de renforcement des compétences, les auteurs mettent en avant les paramètres nécessaires à un développement efficace des capacités des ressources humaines. Des programmes de ce type peuvent jouer un rôle stratégique majeur pour concevoir, coordonner et soutenir la formation systématique et durable des Services vétérinaires et des intervenants Une seule santé afin de développer leurs compétences à l'échelle régionale et mondiale.

Para poder combatir con eficacia y eficiencia las amenazas que pesan sobre la salud pública y la sanidad animal hay que contar con recursos humanos debidamente formados. Un requisito previo al efecto es disponer de un plan eficaz para capacitar al personal de salud tanto privado como público. Sin embargo, la capacitación y el perfeccionamiento del personal como parte de la colaboración en clave de Una sola salud siguen siendo objetivos problemáticos por diversos motivos, en particular la existencia de prioridades encontradas, el hecho de que los fondos vayan destinados específicamente a uno u otro sector y la falta de confianza y comunicación entre los sectores. También influyen sensiblemente consideraciones de índole práctica como las diferencias de idioma y cultura o la dificultad de trabajar en distintas franjas horarias y zonas geográficas. De ahí que tradicionalmente las tentativas realizadas para crear capacidad vinieran careciendo de los atributos necesarios para resultar eficaces y deparar frutos duraderos, atributos tales como la continuidad y la coordinación sistemática del proceso de aprendizaje. Presentando y analizando dos programas de perfeccionamiento del personal implantados en fechas recientes, los autores destacan las características que debe reunir una iniciativa de capacitación de los recursos humanos para ser eficaz. Los programas de este tipo pueden cumplir una función estratégica a la hora de implantar, coordinar y secundar actividades sistemáticas y sostenibles de formación en clave de Una sola salud con objeto de constituir Servicios Veterinarios eficaces a escala regional y mundial.

Osseointegration mechanisms: a proteomic approach.

The prime objectives in the development of biomaterials for dental applications are to improve the quality of osseointegration and to short the time needed to achieve it. Design of implants nowadays involves changes in the surface characteristics to obtain a good cellular response. Incorporating osteoinductive elements is one way to achieve the best regeneration possible post-implantation. This study examined the osteointegrative potential of two distinct biomaterials: sandblasted acid-etched titanium and a silica sol-gel hybrid coating, 70% MTMOS-30% TEOS. In vitro, in vivo, and proteomic characterisations of the two materials were conducted. Enhanced expression levels of ALP and IL-6 in the MC3T3-E1 cells cultured with coated discs, suggest that growing cells on such surfaces may increase mineralisation levels. 70M30T-coated implants showed improved bone growth in vivo compared to uncoated titanium. Complete osseointegration was achieved on both. However, coated implants displayed osteoinductive properties, while uncoated implants demonstrated osteoconductive characteristics. Coagulation-related proteins attached predominantly to SAE-Ti surface. Surface properties of the material might drive the regenerative process of the affected tissue. Analysis of the proteins on the coated dental implant showed that few proteins specifically attached to its surface, possibly indicating that its osteoinductive properties depend on the silicon delivery from the implant.

Proteomic analysis of silica hybrid sol-gel coatings: a potential tool for predicting the biocompatibility of implants in vivo.

The interactions of implanted biomaterials with the host organism determine the success or failure of an implantation. Normally, their biocompatibility is assessed using in vitro tests. Unfortunately, in vitro and in vivo results are not always concordant; new, effective methods of biomaterial characterisation are urgently needed to predict the in vivo outcome. As the first layer of proteins adsorbed onto the biomaterial surfaces might condition the host response, mass spectrometry analysis was performed to characterise these proteins. Four distinct hybrid sol-gel biomaterials were tested. The in vitro results were similar for all the materials examined here. However, in vivo, the materials behaved differently. Six of the 171 adsorbed proteins were significantly more abundant on the materials with weak biocompatibility; these proteins are associated with the complement pathway. Thus, protein analysis might be a suitable tool to predict the in vivo outcomes of implantations using newly formulated biomaterials.

Effect of high-oleic-acid soybeans on production performance, milk fatty acid composition, and enteric methane emission in dairy cows.

The objective of this study was to investigate the effect of 3 soybean sources differing in fatty acid profile and processing method on productivity, milk composition, digestibility, rumen fermentation, and enteric methane emission in lactating dairy cows. The soybean sources were conventional, high-linoleic-acid variety extruded soybean meal (ESBM; 8.7% ether extract with 15% oleic and 54% linoleic acids); extruded Plenish (DuPont Pioneer, Johnston, IA), high-oleic-acid variety soybean meal (EPSBM; 8.4% ether extract with 73% oleic and 8% linoleic acids); and whole, heated Plenish soybeans (WPSB; 20.2% ether extract). The study involved 15 Holstein cows in a replicated 3 × 3 Latin square design experiment with three 28-d periods. The inclusion rate of the soybean sources in the diet was (dry matter basis) 17.1, 17.1, and 7.4% for ESBM, EPSBM, and WPSB, respectively, which resulted in ether extract concentration of the diets of 3.99, 3.94, and 4.18%, respectively. Compared with ESBM, the Plenish diets tended to increase dry matter intake and decreased feed efficiency (but had no effect on energy-corrected milk feed efficiency). The Plenish diets increased milk fat concentration on average by 5.6% and tended to increase milk fat yield, compared with ESBM. The WPSB diet tended to increased milk true protein compared with the extruded soybean meal diets. Treatments had no effect on rumen fermentation and enteric methane or carbon dioxide emissions, except pH was higher for WPSB versus EPSBM. The Plenish diets decreased the prevalence of Ruminococcus and increased that of Eubacterium and Treponema in whole ruminal contents. Total-tract apparent digestibility of organic matter and crude protein were decreased by WPSB compared with ESBM and EPSBM. Compared with the other treatments, urinary N excretion was increased by EPSBM and fecal N excretion was greater for WPSB. Treatments had marked effects on milk fatty acid profile. Generally, the Plenish diets increased mono-unsaturated (mostly cis-9 18:1) and decreased polyunsaturated, total trans-, and conjugated linoleic fatty acids concentrations in milk fat. In this study, compared with conventional, high-linoleic-acid variety extruded soybean meal, the Plenish soybean diets increased milk fat concentration and tended to increase fat yield, decreased feed efficiency, and modified milk fatty acid profile in a manner expected from the greater concentration of oleic acid in Plenish soybean oil.

Association between TNF-α-308G>A and -238G>A gene polymorphisms and TNF-α serum levels in Mexican colorectal cancer patients.

The objective of this study was to examine the association between TNF-α serum levels and -308G>A and -238G>A polymorphisms in the corresponding gene by comparing healthy subjects to colorectal cancer (CRC) patients from a Mexican population. Serum levels of TNF-α were found to significantly differ between CRC patients and controls (P = 0.001), but no relationship between the -308G>A and -238G>A polymorphisms and increased CRC risk was established (P > 0.05). However, an association between the -308G>A variant and disease became evident when the distribution of AA-GA genotypes was examined in patients with hematologic toxicity (neutropenia) and those without (odds ratio = 3.356, 95% confidence interval = 1.295- 8.698, P = 0.013). The GG haplotype was more common in controls than CRC patients, with a frequency of 0.85 among the former, but this difference was not significant (P > 0.05). In conclusion, TNF-α serum levels and AA-AG genotypes of the TNF-α-308G>A polymorphism may significantly contribute to CRC susceptibility in the population examined in this investigation.

Ketamine for rapid reduction of suicidal ideation: a randomized controlled trial.

BACKGROUND: Suicide is a devastating public health problem and very few biological treatments have been found to be effective for quickly reducing the intensity of suicidal ideation (SI). We have previously shown that a single dose of ketamine, a glutamate N-methyl-d-aspartate (NMDA) receptor antagonist, is associated with a rapid reduction in depressive symptom severity and SI in patients with treatment-resistant depression. METHOD: We conducted a randomized, controlled trial of ketamine in patients with mood and anxiety spectrum disorders who presented with clinically significant SI (n = 24). Patients received a single infusion of ketamine or midazolam (as an active placebo) in addition to standard of care. SI measured using the Beck Scale for Suicidal Ideation (BSI) 24 h post-treatment represented the primary outcome. Secondary outcomes included the Montgomery-Asberg Depression Rating Scale--Suicidal Ideation (MADRS-SI) score at 24 h and additional measures beyond the 24-h time-point. RESULTS: The intervention was well tolerated and no dropouts occurred during the primary 7-day assessment period. BSI score was not different between the treatment groups at 24 h (p = 0.32); however, a significant difference emerged at 48 h (p = 0.047). MADRS-SI score was lower in the ketamine group compared to midazolam group at 24 h (p = 0.05). The treatment effect was no longer significant at the end of the 7-day assessment period. CONCLUSIONS: The current findings provide initial support for the safety and tolerability of ketamine as an intervention for SI in patients who are at elevated risk for suicidal behavior. Larger, well-powered studies are warranted.

Synthesis and complementary self-association of novel lipophilic π-conjugated nucleoside oligomers.

A series of lipophilic nucleosides comprising natural and non-natural bases that are π-conjugated to a short oligophenylene-ethynylene fragment has been synthesized. These bases comprise guanosine, isoguanosine, and 2-aminoadenosine as purine heterocycles, and cytidine, isocytosine and uridine as complementary pyrimidine bases. The hydrogen-bonding dimerization and association processes between complementary bases were also studied by (1)H NMR and absorption spectroscopy in order to obtain the relevant association constants.

Tuberculosis in swine co-infected with Mycobacterium avium subsp. hominissuis and Mycobacterium bovis in a cluster from Argentina.

SUMMARY In Argentina little is known about the epidemiology of tuberculosis (TB) infection in swine. We characterized the epidemiological dynamics of Mycobacterium avium complex (MAC) infection in a swine population of Argentina using molecular tools and spatial analysis techniques. Isolates (n = 196) obtained from TB-like lesions (n = 200) were characterized by polymerase chain reaction. The isolates were positive to either M. bovis (IS6110) (n = 160) or M. avium (IS1245) (n = 16) while the remaining 20 (10.2%) isolates were positive to both M. bovis and M. avium. The detection of both bacteria together suggests co-infection at the animal level. In addition, MAC-positive isolates (n = 36) were classified as M. avium subsp. avium (MAA) (n = 30) and M. avium subsp. hominissuis (MAH) (n = 6), which resulted in five genotypes when they were typed using mycobacterial interspersed repetitive unit, variable number of tandem repeats (MIRU-VNTR). One significant (P = 0.017) spatial clustering of genotypes was detected, in which the proportion of MAH isolates was larger than expected under the null hypothesis of even distribution of genotypes. These results show that in Argentina the proportion of TB cases in pigs caused by M. avium is larger than that reported in earlier studies. The proportion of M. bovis-MAC co-infections was also higher than in previous reports. These results provide valuable information on the epidemiology of MAC infection in swine in Argentina.

Association of the GSTM1 null polymorphism with breast cancer in a Mexican population.

The glutathione S transferase (GST) family plays an important role in the processing of carcinogens. Data on the null GSTM1 genotype has revealed associations with cancer, and has been suggested to affect carcinogen metabolism and to contribute to tumor promotion in the mammary gland. We examined the role of the null GSTM1 genotype by comparing the genotypes of 276 healthy Mexican women with those of 558 Mexican women with breast cancer (BC). The genotype frequencies observed in the controls and patients with BC were 38 and 45% for the null GSTM1 genotype, respectively. The obtained odds ratio (OR) was 1.36, with a 95% confidence interval (95%CI) of 1.02-1.8, P = 0.04. The protective association was also evident upon analysis of the distributions of the null GSTM1 genotype in patients with positive chemotherapy response who had high plasma levels of glucose (OR 0.56, 95%CI = 0.33-0.94, P = 0.03). This study suggested that the null GSTM1 genotype is associated with BC susceptibility in the Mexican population analyzed.

Association of the C677T polymorphism in the methylenetetrahydrofolate reductase gene with breast cancer in a Mexican population.

The methylenetetrahydrofolate reductase (MTHFR) gene plays an important role in the steps involved in the processing of amino acids. The analysis of polymorphisms in the MTHFR gene has revealed associations with cancer; in particular the C677T polymorphism, which has been suggested to affect folate metabolism, DNA methylation, synthesis, and repair, and to contribute to tumor promotion in the mammary gland. We examined the role of the C677T polymorphism in the MTHFR gene by comparing the C677T genotypes of 339 healthy Mexican women with those of 497 Mexican women with breast cancer (BC). The genotype frequencies observed in the controls and patients with BC were 10 and 21% for 677TT; 41 and 36% for 677CT; and 49 and 43% for 677CC, respectively. The odds ratio (OR) for the 677TT genotype was 2.5, with a 95% confidence interval (95%CI) of 1.6-3.8; P = 0.0001. The positive association was also evident when the distributions of the 677TT genotype in control and patients affected within the following two categories were compared to alcohol consumption (OR = 0.41; 95%CI = 0.19-0.86; P = 0.018); and high level glutamate-oxaloacetate transaminase (SGOT) (OR = 0.36; 95%CI = 0.15-0.83, P = 0.017). These results suggest that the 677TT genotype of the C677T polymorphism in the MTHFR gene is associated with BC susceptibility in the Mexican population.

Bright squeezed-vacuum source with 1.1 spatial mode.

Bright squeezed vacuum, a macroscopic nonclassical state of light, can be obtained at the output of a strongly pumped nonseeded traveling-wave optical parametric amplifier (OPA). By constructing the OPA of two consecutive crystals separated by a large distance, we make the squeezed vacuum spatially single-mode without a significant decrease in the brightness or squeezing.

Effectiveness of systematic foot and mouth disease mass vaccination campaigns in Argentina.

The objective of this paper is to evaluate the effectiveness of systematic mass vaccination campaigns against foot and mouth disease in Argentina. The analysis was based on an estimation of the proportion of protected animals and protected farms in vaccinated populations, as reflected by levels of antibodies measured in liquid-phase enzyme-linked immunosorbent assay. The analysis was carried out in 49 animal health districts in Buenos Aires province, using data collected from four cross-sectional studies, in 2004, 2007, 2008 and 2011. Cattle were assigned to one of two categories on the basis of correlation between serological titres and expected percentage protection: non-adequately protected (expected protection < 75%) and adequately protected (expected protection ≥ 75%). The proportions of adequately protected cattle and significantly non-adequately protected farms were estimated and compared among sampled locations. Protection was variable among the districts; cattle aged one to two years showed higher levels of protection than cattle six to 12 months old, and the proportion of protected cattle was higher in the more recent studies. The results of the analysis will allow the national animal health service to investigate in depth those districts where protection was lower than the regional background protection. The authors propose that this methodology could be used to evaluate the effectiveness of vaccination campaigns in other countries or zones where systematic foot and mouth disease mass vaccination campaigns are undertaken.

[Health service needs of migrant women from a basic health area: A qualitative study]. / Necesidades sentidas de salud en mujeres migrantes de una zona básica de salud: estudio cualitativo.

OBJECTIVES: To know the needs and lack of information on health issues of Maghrebi women. SUBJECTS, MATERIAL AND METHOD: Design: Qualitative study technique nominal group (TGN). SUBJECTS: 14 North African women from Association for Solidarity and Rapprochement of Cultures (ASAC) from the rural clinic of La Aljorra who knew and understood Spanish, older age, and lived in the town for more than 3 years. Material and method TGN asks: «What daily health issues for you and your family worry you the most and do you need answers?¼ Individual reflection and list that were discussed among them, joining the group consensus. Subsequently, they were prioritized individually and a definitive list of their prioritized health needs was made. RESULTS: Thirty-six percent of the ASAC associates attended. At first, 17 topics were written on health needs for which they wanted a response. The final topics chosen and grouped by them were 6: 1) Contraceptive methods; 2) Relationship problems; 3) Thyroid; 4) How to cure the sciatic nerve?; 5) Anemia and 6) Stress. 70% related to the area of sexuality. CONCLUSIONS: 1) Qualitative research is an adequate consensus method to obtain information on little-known topics and directly from the person involved; 2) The Moroccan migrant woman considers information about sexuality and couple relationships very important; 3) Another pathology unknown to them and emerging in the area is thyroid; 4) Stress and its repercussions; 5) Sciatica and its consequences are also important when being agricultural workers.

Variants rs2758346, rs5746094, and rs2758331 of SOD2 gene: association study with breast cancer in a Mexican population and their analysis in silico.

OBJECTIVE: The aim of the study was to analyze the association between the superoxide dismutase 2 (SOD2) gene variants rs2758346, rs5746094, and rs2758331 and breast cancer (BC) in the Mexican population as well as to perform in silico assessments of the variants' potential impact. PATIENTS AND METHODS: We performed in silico analysis and analyzed 489 healthy women and 467 BC patients using TaqMan assays and Real-Time PCR. RESULTS: The TT genotype, the T allele of the rs2758346 variant, and the CC genotype of both rs5746094 and rs2758331 were identified as BC risk factors (p < 0.05). The TT and CTTT genotype of the rs2758346 variant stratified by the presence of ki-67 (> 20%), TCCC, and estrogen receptor (ER)-positive of the rs5746094 variant, and the CC and CT genotypes of rs2758331 stratified by menopause status and non-chemotherapy response were risk factors. The TTC and TTA haplotypes are risk factors for BC. In silico analysis revealed that the rs2758346, rs5746094, and rs2758331 variants could influence SOD2 gene regulation by transcription factors and circulating RNAs (circRNAs). CONCLUSIONS: The rs2758346, rs5746094, and rs2758331 variants of the SOD2 gene were associated with BC risk and could influence SOD2 regulation by transcription factors and circRNAs.

Within-farm spread of infectious salmon anemia virus (ISAV) in Atlantic salmon Salmo salar farms in Chile.

Spread of infectious salmon anemia virus (ISAV) at the cage level was quantified using a subset of data from 23 Atlantic salmon Salmo salar farms located in southern Chile. Data collected from official surveillance activities were systematically organized to obtain detailed information on infectious salmon anemia (ISA) outbreaks. Descriptive statistics for outbreak duration, proportion of infected fish, and time to secondary infection were calculated to quantify the magnitude of ISAV incursions. Linear and multiple failure time (MFT) regression models were used to determine factors associated with the cage-level reproduction number (Rc) and hazard rate (HR) for recurrent events, respectively. In addition, the Knox test was used to assess if cage-to-cage transmissions were clustered in space and time. Findings suggest that within farms, ISA outbreaks, on average, lasted 30 wk (median = 26 wk, 95% CI = 24 to 37 wk) and affected 57.3% (95% CI = 47.7 to 67.0%) of susceptible cages. The median time to secondarily diagnosed cages was 23 d. Occurrence of clinical ISAV outbreaks was significantly associated with increased Rc, whereas increased HR was significantly associated with clinical outbreaks and with a large number of fish. Spatio-temporal analysis failed to identify clustering of cage cases, suggesting that within-farm ISAV spread is independent of the spatial location of the cages. Results presented here will help to better understand ISAV transmission, to improve the design of surveillance programs in Chile and other regions in which salmon are intensively farmed, and to examine the economic impact of ISAV and related management strategies on various cost and demand shifting factors.