PsicAP transdiagnostic protocol of group cognitive-behavioral training for emotional disorders in Dominican Republic: a randomized controlled trial protocol.

Emotional disorders (ED) such as anxiety, depression and somatization are extremely prevalent disorders that can affect an individual's quality of life and functionality. Primary Health Care (PHC) is the first place to identify most patients with these conditions. Mental health services in the Dominican Republic, as well as in Latin America and the Caribbean in general, are unable to provide appropriate care for most people with mental disorders. Using evidence-based treatment protocols is also crucial to make progress in helping people with ED. The PsicAP project is a group intervention that uses a transdiagnostic approach and is grounded in cognitive-behavioral techniques. The program is implemented in 7 group sessions, each lasting for one and a half hours. The program has been shown to be effective in reducing clinical symptoms, dysfunction, and in improving quality of life. It is also a non-time-intensive, low-cost treatment that is helpful for addressing EDs in a PHC context. The objective is to bring psychological treatments into PHC facilities of Dominican Republic, making them more accessible for a larger amount of the population.

Metabolism or behavior: explaining the performance of aphids on alkaloid-producing fungal endophytes in annual ryegrass (Lolium multiflorum).

Plant-herbivore interactions are often mediated by plant microorganisms, and the "defensive mutualism" of epichloid fungal endophytes of grasses is an example. These endophytes synthesize bioactive alkaloids that generally have detrimental effects on the performance of insect herbivores, but the underlying mechanisms are not well understood. Our objective was to determine whether changes in the physiology and/or behavior of aphids explain the changes in performance of insects feeding on endophytic plants. We studied the interaction between the aphid Rhopalosiphum padi and the annual ryegrass Lolium multiflorum symbiotic (E+) or not symbiotic (E-) with the fungus Epichloë occultans that can synthesize loline alkaloids. We hypothesized that aphids feeding on E+ plants have higher energetic demands for detoxification of fungal alkaloids, thereby negatively impacting the individual performance, population growth, and structure. Aphids growing on E+ plants had lower values in morphometric and functional variables of individual performance, displayed lower birth rate, smaller population size, and dramatic structural changes. However, aphids exhibited lower values of standard metabolic rate (SMR) on E+ plants, which suggests no high costs of detoxification. Behavioral variables during the first 8 h of feeding showed that aphids did not change the phloem sap ingestion with the presence of fungal endophytes. We hypothesize that aphids may maintain phloem sap ingestion according to their fungal alkaloid tolerance capacity. In other words, when alkaloid concentrations overcome tolerance threshold, ingestion of phloem should decrease, which may explain the observed lower values of SMR in E+ feeding aphids.

Induced senescence promotes the feeding activities and nymph development of Myzus persicae (Hemiptera: Aphididae) on potato plants.

The effect of dark-induced senescence on Solanum tuberosum L. (Solanales: Solanaceae) plants was assessed on the feeding behavior and performance of the green peach aphid, Myzus persicae Sulzer (Hemiptera: Aphididae). Senescence was induced by covering the basal part of the plant with a black cloth for 5 d, avoiding the light passage, but keeping the apical buds uncovered. The basal part of control plants was covered with a white nonwoven cloth. The degree of senescence was determined by measuring the chlorophyll content of the covered leaves. The performance and feeding behavior of M. persicae were studied on the uncovered nonsenescent apical leaves. The aphid's performance was evaluated by measuring nymphal mortality and prereproductive time. Aphid feeding behavior was monitored by the electrical penetration graph technique. In plants with dark-induced senescence, the aphids showed a reduction in their prereproductive time. Aphids also spent more time ingesting sap from the phloem than in control plants and performed more test probes after the first sustained ingestion of phloem sap. These data suggest that M. persicae's phloem activities and nymph development benefit from the nutritional enrichment of phloem sap, derived from dark-induced senescence on potato plants. The induced senescence improved plant acceptance by M. persicae through an increase in sap ingestion that likely resulted in a reduction in developmental time.

Safety net hospital risk model demonstrates stronger, population-specific applicability in characterizing lung cancer risk.

Background: Determining lung cancer (LC) risk using personalized risk stratification may improve screening effectiveness. While the Prostate, Lung, Colorectal, and Ovarian Cancer Screening Trial (PLCO) is a well-established stratification model for LC screening, it was derived from a predominantly Caucasian population and its effectiveness in a safety net hospital (SNH) population is unknown. We have developed a model more tailored to the SNH population and compared its performance to the PLCO model in a SNH setting. Methods: Retrospective dataset was compiled from patients screened for LC at SNH from 2015 to 2019. Descriptive statistics were calculated using the following variables: age, sex, race, education, body mass index (BMI), smoking history, personal cancer history, family LC history, chronic obstructive pulmonary disease (COPD), and emphysema. Variables distribution was compared using t- and chi-square tests. LC risk scores were calculated using SNH and PLCO models and categorized as low (scores <0.65%), moderate (0.65-1.49%), and high (>1.5%). Linear regression was applied to evaluate the relationship between models and covariates. Results: Of 896 individuals, 38 were diagnosed with LC. Data reflected the SNH patient demographics, which predominantly were African American (53.5%), current smokers (69.9%), and with emphysema (70.1%). Among the non-LC cohort, SNH model most frequently categorized patients as low risk, while PLCO model most frequently classified patients as moderate risk. Among the LC cohort, there was no significant difference between mean scores or risk stratification. SNH model showed 92.1% sensitivity and 96.8% specificity while PLCO model showed 89.4% sensitivity and 26.1% specificity. Emphysema demonstrated a strong association in SNH model (P<0.001) while race showed no relation. Conclusions: SNH model demonstrated greater specificity for characterizing LC risk in a SNH population. The results demonstrated the importance of study sample representation when identifying risk factors in a stratification model.

Hypothetical framework for post-COVID 19 condition based on a fibromyalgia pathogenetic model.

There is a clear clinical overlap between fibromyalgia, myalgic encephalomyelitis, and post-COVID 19 condition. Chronic fatigue, cognitive impairment, and widespread pain characterize these 3 syndromes. A steady line of investigation posits fibromyalgia as stress-evoked sympathetically maintained neuropathic pain syndrome and places dorsal root ganglia dysregulation with the ensuing small fiber neuropathy at the epicenter of fibromyalgia pathogenesis. This article discusses emerging evidence suggesting that similar mechanism may operate in post-COVID 19 condition.

Is Being a Lark Healthier for Patients with Type 1 Diabetes Mellitus?

Background Sleep quality and mood have been evaluated in type 1 diabetic (T1DM) patients, but chronotypes were not studied. Our objectives were to analyze chronotypes, sleep and mood variables and to describe their association with some metabolic variables in this population. Methods An observational, cross-sectional study was performed. Adults with a diagnosis of T1DM were included. We evaluated chronotypes by the Morningness-Eveningness Questionnaires, sleep quality by Pittsburgh Sleep Quality Index (PSQI), excessive daytime sleepiness by Epworth Sleepiness Scale (ESS), symptoms of depression by Patient Health Questionnaire - 9 (PHQ-9) and emotional well-being by Emotional Well Being Index (IWHO-5). A few metabolic variables were included. Results Ninety-five patients participated. The mean age was 38 years old (range 18-70). The average body mass index (BMI) was 24.4 Kg/m 2 (standard deviation [SD]: 4.6). Out of the total sample, 52.6% were males. The Intermediate chronotype was predominant: n = 56 (55%). We found poor quality of sleep in 67.4% of the sample, excessive daytime sleepiness in 14.7%, depressive symptoms in 6.3% by PHQ9 and low perception of well-being by IWHO-5 in 16.8%. Evening chronotype scored worse in sleep quality ( p = 0.05) and had lower well-being ( p = 0.03) compared with the other chronotypes. Higher MEQ values (morningness) correlated with lower height ( p = 0.043), lower values in the PSQI ( p = 0.021); and higher values in emotional well-being ( p = 0.040). Conclusions We found that the predominant chronotype in T1DM was the intermediate. Two-thirds reported poor quality of sleep and 14,7% excessive daytime sleepiness. Possible diagnosis of a depressive disorder in 6.3% and poor self-perception of emotional well-being in 16. 8% were observed. The morning chronotype had significant correlation with better sleep quality and higher scores in emotional well-being.

[Diabetes, alexithymia and depression]. / Diabetes, alexitimia y depresión.

Diabetes Mellitus and Depression are two increasing pathologies. Several articles indicate that Depression in Diabetes is twice as important as in the general population. Yet, Depression in diabetic patients is underdiagnosed. On the other hand, Alexithymia might be a factor associated to Depression. We therefore carried out a research in order to evaluate the relationship between Depression and Alexithymia in diabetic patients at the Italian Hospital of Buenos Aires. We performed psychiatric interviews, which led to diagnoses based on DSM-IV, and applied the following scales: HAM-D, TAS-26, DBI and M.I.N.I. We evaluated 59 patients who had been diagnosed Type II Diabetes. Crossing variables, we observed a negative correlation between the results of Beck's Depression Inventory and those of Hamilton's Depression Scale. On the contrary, these last results showed a positive correlation with results obtained through TAS-26, which reveals a significant relationship between Depression and the presence of Alexithymia. According to the link between Depression, Diabetes Mellitus II and Alexithymia and considering that Alexithymia has consequences on the illness evolution and the treatment of both pathologies, it seems important to determine when and how to include its evaluation.

Prescription profile in patients with SARS-CoV-2 infection hospitalised in Aragon, Spain.

INTRODUCTION: On 14 March 2020, a state of alarm was declared in Spain because of the pandemic of coronavirus disease (COVID-19). After 12 weeks from the beginning of the pandemic, the number of confirmed cases stoods at 5781 in Aragon: 46% hospitalised, 5% admitted to intensive care unit, and 15% died. The absence of controlled trials in SARS-CoV-2 infection and the fast progression of the disease has promoted the use of treatments with unproven potential benefit. The objective of this study is to define the prescription profile in patients with SARS-CoV-2 infection hospitalised in Aragon, Spain during the pandemic and its adaptation to the official recommendations. PATIENTS AND METHODS: Descriptive retrospective study of the consumption and inpatient dispensation of drugs in a sample of COVID-19 infected inpatients (with positive PCR test result) admitted to hospitals of Aragon, between 1 March and 8 May 2020. Data were collected by an inpatient dispensation software program. RESULTS: 1482 positive COVID-19 patients were analysed: 54.9% male, median age 75 years (IQR 62-85); 12% were admitted to the intensive care unit. Median prescription: 13 active ingredients per patient (IQR 9-19). 73% (1093 patients) received hydroxychloroquine, lopinavir/ritonavir, or azithromycin, 81% as combination therapy. 4.3% (52) received other antivirals. 46% received corticosteroids (84% methylprednisolone, 8.7% dexamethasone) and 2.2% tocilizumab. DISCUSSION: At the time of the study period there was not enough quality evidence to issue a recommendation on any treatment. There are several clinical trials ongoing to clarify what is the best treatment for patient with SARS-CoV-2 infection.

Sex disparities in lung cancer survival rates based on screening status.

OBJECTIVE: Low dose computed tomography (LDCT) became the standard method for lung cancer (LC) screening in 2013. However, it is unclear whether there are differences in survival rates based on sex and whether the differences depend on screening status. We aimed to evaluate the LC survival rates between females and males based on screening. MATERIAL AND METHODS: This retrospective cohort study examined data from the Boston LC Study (BLCS) between 2013 and 2021. LC screening depends on patients' demographics (age and smoking history) to determine whether a person is a high-risk individual and, therefore, undergo LDCT. Descriptive statistics were calculated for race, age, histology, smoking history, stage, and treatment. These variables' distributions were compared between sex and screening status using t-test and chi-square, respectively. Cox proportional hazards model and Kaplan-Meier curves were used to compare survival between sex and screening. Propensity score matching was applied to account for selection bias in screening when evaluating the association between screening and stage. RESULTS: A total of 1,216 LC patients were identified with a screening incidence of 9.4 %, among whom 56 % were female. Unscreened males had 1.59 times higher risk of mortality than unscreened females (P=.0002) and had a worse 5-year survival (male 50 %; 95 %CI, 0.38,0.6 vs female 70 %; 95 %CI,0.62,0.76). In contrast, there were no significant differences in survival between sexes among screened. In a balanced cohort of screened and unscreened, the odds of being diagnosed at late stages for females and smokers were 1.33 and 2.51 times that of males and nonsmokers; however, there were no statistical significance. CONCLUSION: Unscreened females had a lower risk of mortality and better survival than unscreened males, while among the screened population, there was no difference in the overall survival. These observations demonstrate the influence of sex on survival prognosis in LC when screening is not performed.

Changes in social functioning and engagement during canine-assisted intervention for children with neurodevelopmental disorders in the context of an early intervention service.

PURPOSE: The objectives were to evaluate the feasibility of early implementation of a canine-assisted intervention (CAI) for children with neurodevelopmental disorders, and to determine the changes in social functioning and in engagement experienced by the participants. MATERIALS AND METHODS: A CAI consisting of 24 sessions was piloted in an intra-subject quasi-experimental longitudinal design. The outcome measures were the Assessment of Communication and Interaction Skills (ACIS) and Individual Child Engagement Record-Revised (ICER-R). RESULTS: No adverse events or side-effects were noted. The sample consisted of 44 participants (median age 37 months). A total of 33 children (75%) attended all sessions. Main results showed that after completing the intervention, the overall ACIS score improved significantly (p < 0.001); the effect size was large. There was a significant improvement in the scales of the ICER-R from baseline to the final assessment: overall engagement (p < 0.001), frequency of repetitive behaviours (p < 0.001), frequency of interaction between the child and adults (p < 0.001), and the quality of this interaction (p < 0.001); the effect sizes ranged from medium to large. CONCLUSIONS: The early application was feasible. The results in the areas of social functioning and engagement suggest that this CAI may be a useful complementary strategy in early therapeutic intervention with these children. WHAT THIS PAPER ADDS?: The results of implementation of a canine-assisted intervention (CAI) at an early therapeutic intervention unit for children with neurodevelopmental disorders are not known. This research supported the feasibility and positive impact of a CAI in a population consisting of children with neurodevelopmental disorders in the earliest stages of their life, with similar proportions of participants with global developmental delay and autism spectrum disorder. The study was pioneering in the development of this form of actions in an early intervention service for children with these health conditions. The intervention appears feasible and the results extend the existing evidence base for this intervention modality. The findings suggest significant improvements of a medium to large size in the domains of communication skills and social relations, engagement levels, frequency and quality of interaction with adults and repetitive behaviours after 12 and 24 weekly CAI sessions.

Ruxolitinib as a treatment strategy for SARS-CoV-2 pneumonia: clinical experience in a real-world setting.

INTRODUCTION: Severe acute respiratory syndrome-related coronavirus (SARS-CoV-2) infection is characterised by a viral phase and a severe pro-inflammatory phase. The inhibition of the JAK/STAT pathway limits the pro-inflammatory state in moderate to severe COVID-19. METHODOLOGY: We analysed the data obtained by an observational cohort of patients with SARS-CoV-2 pneumonia treated with ruxolitinib in 22 hospitals of Mexico. The applied dose was determined based on physician's criteria. The benefit of ruxolitinib was evaluated using the 8-points ordinal scale developed by the NIH in the ACTT1 trial. Duration of hospital stay, changes in pro-inflammatory laboratory values, mortality, and toxicity were also measured. RESULTS: A total of 287 patients were reported at 22 sites in Mexico from March to June 2020; 80.8% received ruxolitinib 5 mg BID and 19.16% received ruxolitinib 10 mg BID plus standard of care. At beginning of treatment, 223 patients were on oxygen support and 59 on invasive ventilation. The percentage of patients on invasive ventilation was 53% in the 10 mg and 13% in the 5 mg cohort. A statistically significant improvement measured as a reduction by 2 points on the 8-point ordinal scale was described (baseline 5.39 ± 0.93, final 3.67± 2.98, p = 0.0001). There were 74 deaths. Serious adverse events were presented in 6.9% of the patients. CONCLUSIONS: Ruxolitinib appears to be safe in COVID-19 patients, with clinical benefits observed in terms of decrease in the 8-point ordinal scale and pro-inflammatory state. Further studies must be done to ensure efficacy against mortality.

Endogenous presynaptic nitric oxide supports an anterograde signaling in the central nervous system.

The source size and density determine the extent of nitric oxide (NO) diffusion which critically influences NO signaling. In the brain, NO released from postsynaptic somas following NMDA-mediated activation of neuronal nitric oxide synthase (nNOS) retrogradely affects smaller presynaptic targets. By contrast, in guinea pig trigeminal motor nucleus (TMN), NO is produced presynaptically by tiny and disperse nNOS-containing terminals that innervate large nNOS-negative motoneurons expressing the soluble guanylyl-cyclase (sGC); consequently, it is uncertain whether endogenous NO supports an anterograde signaling between pre-motor terminals and postsynaptic trigeminal motoneurons. In retrogradely labeled motoneurons, we indirectly monitored NO using triazolofluorescein (DAF-2T) fluorescence, and evaluated sGC activity by confocal cGMP immunofluorescence. Multiple fibers stimulation enhanced NO content and cGMP immunofluorescence into numerous nNOS-negative motoneurons; NOS inhibitors prevented depolarization-induced effects, whereas NO donors mimicked them. Enhance of cGMP immunofluorescence required extracellular Ca(2+), a nNOS-physiological activator, and was prevented by inhibiting sGC, silencing neuronal activity or impeding NO diffusion. In conclusion, NO released presynaptically from multiple cooperative tiny fibers attains concentrations sufficient to activate sGC in many motoneurons despite of the low source/target size ratio and source dispersion; thus, endogenous NO is an effective anterograde neuromodulator. By adjusting nNOS activation, presynaptic Ca(2+) might modulate the NO diffusion field in the TMN.

Independence in Daily Activities after Stroke among Occupational Therapy Patients and Its Relationship with Unilateral Neglect.

More research is needed to better understand the impact of occupational therapy (OT) in stroke patients and syndromes of unilateral neglect (UN) and anosognosia. A prospective, observational, longitudinal design was conducted on a sample of 27 OT patients. The objectives were to examine: (1) the presence of UN and anosognosia; (2) the functional outcomes; and (3) the association of UN at baseline with functional status at discharge from OT. The outcomes were Barthel (functional independence) and the Rivermead Mobility Index (RMI). The baseline proportion of participants with UN was 33% according to the Star Cancellation Test (STC), and 48.1% according to the Catherine Bergego Scale (CBS) therapist-version. There was a significant difference between the therapist and participant-rated CBS scores (p = 0.004). Functional independence improved significantly between the initial and final assessments (p < 0.001); the effect size (r) was large (r = 0.61). There was a significant improvement in RMI scores (p < 0.001), which was large in size (r = 0.59). Both the STC and CBS-therapist scores were significantly correlated with the Barthel (p < 0.001, p = 0.005, respectively) and with the RMI (p = 0.004, p = 0.028, respectively). The participants substantially enhanced their functional status skills. UN and anosognosia were common problems, and neglect was associated with worse OT program outcomes.

The Influence of Spirituality and Religiosity on US Oncologists' Personal Use of and Clinical Practices Regarding Complementary and Alternative Medicine.

BACKGROUND: Cancer patients frequently use complementary and alternative medicine (CAM), and spirituality has been associated with CAM use among patients. We evaluated how oncologists' spirituality and religiosity are associated with personal use and patient recommendations for CAM. METHODS: A survey was mailed to 1000 medical oncologists in the United States. The questionnaire asked about oncologists' approaches to CAM use by patients, focusing on the use of herbs and supplement (HS), and about religiosity and spirituality. RESULTS: Of 937 deliverable questionnaires, 392 were returned (response rate 42%). Respondents were mostly men (71%) and Caucasian (76%), with a median age of 48. Approximately 16% reported no religion, 19% Jewish, 24% Catholic, 28% Christian, and 13% other religions. Eighteen percent reported attending religious services at least once a week, including 15% who attend several times per week. Twenty-eight percent reported high theological pluralism (skepticism regarding whether one religion is comprehensively and uniquely true); 58% described themselves as moderately or very spiritual. Self-reported spirituality and religious service attendance were associated with using CAM personally and recommending HS to patients. In multivariate analyses, moderate-high spirituality and attending religious services less than monthly was positively associated with personal use of CAM: odds ratio (OR) = 3.10 (confidence interval [CI] = 1.5-6.5) and OR = 3.04 (CI = 1.5-6.6), respectively. Physicians with moderate to high spirituality were more likely to report recommending CAM in general (OR = 3.07, CI = 1.3-7.1), but less likely to report recommending HS (OR = 0.33, CI = 0.14-0.75). CONCLUSION: Self-reported spirituality is a significant factor among US oncologists' decision to use CAM and recommend CAM to patients.

Diagnosis and Management of Squamous Cell Carcinoma of Unknown Primary in the Head and Neck: ASCO Guideline.

PURPOSE: To provide evidence-based recommendations to practicing physicians and other health care providers on the diagnosis and management of squamous cell carcinoma of unknown primary in the head and neck (SCCUP). METHODS: The American Society of Clinical Oncology convened an Expert Panel of medical oncology, surgery, radiation oncology, radiology, pathology, and advocacy experts to conduct a literature search, which included systematic reviews, meta-analyses, randomized controlled trials, and prospective and retrospective comparative observational studies published from 2008 through 2019. Outcomes of interest included survival, local and regional disease control, and quality of life. Expert Panel members used available evidence and informal consensus to develop evidence-based guideline recommendations. RESULTS: The literature search identified 100 relevant studies to inform the evidence base for this guideline. Four main clinical questions were addressed, which included subquestions on preoperative evaluations, surgical diagnostic and therapeutic procedures, appropriate pathology techniques, and adjuvant therapy. RECOMMENDATIONS: Evidence-based recommendations were developed to address preoperative evaluation for patients with a neck mass, surgical diagnostic and therapeutic procedures, appropriate treatment options in unilateral versus bilateral SCCUP.Additional information is available at www.asco.org/head-neck-cancer-guidelines.

Improving social participation of children with autism spectrum disorder: Pilot testing of an early animal-assisted intervention in Spain.

Children with autism spectrum disorder (ASD) experience moderate to profound challenges in relation to the skills required for social participation. Animal-assisted intervention (AAI) is increasingly used within early community care. However, the results of its early application in this population group are not known. This pilot study aimed to explore the feasibility of an early intervention based on the use of therapy dogs and to examine their impact on communication and social interaction skills. A within-subject quasi-experimental longitudinal design was used. The instruments for measuring results were the Assessment of Communication and Interaction Skills (ACIS) and Animal-assisted Therapy Flow Sheet, both based on observation. A total of 19 children with confirmed or probable ASD (with mean age of 46.2 months), cared for in a Spanish therapeutic unit, participated in a median of nine AAI sessions, with a mean duration of 19.9 min per session. The total ACIS score increased significantly between the initial and final assessments of the study, with communication and social interaction skills improving with a large effect size. In the Animal-assisted Therapy Flow Sheet instrument, statistically significant improvements were found in most of the items that evaluate the frequency of child-dog social relationships (look at the dog, touch it, talk to it and get involved in an activity with the animal) and child-therapist relationships (look at the therapist and talk to him/her); the effect sizes ranged from medium to large. In conclusion, the early application of an AAI is feasible and seems to improve communication and social interaction skills, both essential elements for social participation. The results suggest that this intervention may be a beneficial non-pharmacological therapy as a complementary approach within community care for children with ASD in the early years of their life.

Assessing the Outcomes of an Animal-Assisted Intervention in a Paediatric Day Hospital: Perceptions of Children and Parents.

There is a growing interest in the use of animal-assisted intervention (AAI) as a non-pharmacological strategy to improve child welfare in hospitals. However, the efficacy of implementation of programmes based on activities with dogs in a paediatric day hospital is not known. An intra-subject quasi-experimental longitudinal design was used for the purpose of assessing the feasibility of such an intervention, as well as exploring the perceptions of its outcomes by children and parents/guardians. A total of 55 children in outpatient care at a paediatric day hospital participated in an AAI session. The application of this intervention was feasible. Self-assessment by the paediatric patients revealed a statistically significant improvement in their emotional state after the session, which was large in size. Parents confirmed this improvement in their child, perceiving significant changes in their mood, which were large in size. This study suggests that AAI is an effective approach when it comes to promoting the emotional welfare of children during their stay in hospital care environments. Participating in recreational occupations with dogs could contribute in a relevant and efficient way to the development of significant and gratifying experiences and to a more positive perception of healthcare centres on the part of children.

[The Red Cross, Pan-Americanism and health in the inter-war period]. / La Cruz Roja, el panamericanismo y la salud en el período de entreguerras.

The Red Cross, an international organization originally founded in Europe, promoted in different Latin American countries the formation of national societies under the humanitarian and neutral principles in relation to the treatment of prisoners in times of armed conflicts. After the First World War and under the influence of the United States, the League of the Red Cross Societies was fostered to design and apply sanitary and social actions in times of peace. Based on that boost, different Pan-American Congresses were held in the twenties and thirties in Buenos Aires, Washington and Rio de Janeiro, which had an agenda that coincided with the principles of this international organization and, at the same time, allowed the elites and the state and private organisms of different fields to unify in pursuit of intervening in different social sectors.

La Cruz Roja, organismo internacional originalmente organizado en Europa, provocó la formación de sociedades nacionales en distintos países latinoamericanos bajo los principios humanitarios y neutrales relacionados con el tratamiento de prisioneros en épocas de conflictos bélicos. Luego de la Primera Guerra Mundial y bajo la influencia estadounidense, se impulsaron la Liga de las Sociedades de la Cruz Roja para el diseño y aplicación de acciones sanitarias y sociales en tiempos de paz. A partir de ese impulso, en la década de 1920 y 1930, se realizaron congresos panamericanos en Buenos Aires, Washington y Río de Janeiro que dispusieron una agenda coincidente con los principios de esta organización internacional que, a su vez, permitieron unificar las élites, los organismos estatales y privados de diferentes ámbitos en pos de la intervención sobre diferentes sectores sociales.

Aphicidal activity of Bacillus amyloliquefaciens strains in the peach-potato aphid (Myzus persicae).

Myzus persicae Sulzer (Hemiptera: Aphididae), is a generalist cosmopolitan insect that infests more than 400 plant species of 40 different families and is one of the major pests infesting potato crops. It causes direct damage and also spread plant viruses. The intensive use of synthetic insecticide to control aphids has led to resistant populations. Therefore, there is a need to develop biopesticides for effective control that minimizes environmental hazards. The bacteria Bacillus amyloliquefaciens is recognized as a producer of a variety of bioactive compounds. The aim here was to evaluate the aphicidal effect of B. amyloliquefaciens strains, CBMDDrag3, PGPBacCA2, and CBMDLO3, and their metabolites on the mortality and fecundity of M. persicae. Cells suspensions, heat-killed cell suspensions, cell-free supernatants, or isolated lipopeptide fractions from B. amyloliquefaciens strains were offered to aphids through artificial diets. The isolated lipopeptide fractions composed mainly of kurstakins, surfactins, iturins, and fengycins, when were administrated through diets, had no aphicidal effect against M. persicae. However, aphids fed on diets with whole cell suspensions and its cell-free supernatant of all three bacteria strains resulted in 100% mortality of adult aphids and nymphs. Specially, B. amyloliquefaciens CBMDLO3, has an effective aphicidal effect on M. persicae, used both bacterial cells and their metabolites. Moreover, heat-killed cells of B. amyloliquefaciens CBMDLO3 also had aphicidal action, although the aphid mortality was lower than on diet with living bacteria. Therefore, these results propose that B. amyloliquefaciens, could function as a novel eco-friendly biopesticide for the control of M. persicae.

[Surgical practice in the Mexican Empire]. / El ejercicio de la cirugía en el imperio mexica.

The prehispanic medicines of Mexico are considered as testimony of the splendor of the Meso-American cultures; their great scientific advance and technical allowed them to accumulate a vast collection of clinical and pathological data based on the observation and experimentation. They integrated a nomenclature medical surgical that reflected their advance in those fields of the knowledge, where the anatomy and surgery occupied a preponderant paper. The medicine was known generically as ticiotl, of where it derives the term tícitl for the doctor. In their concept health-illness the limits among the magic, religion and the empiricism for natural causes were not clear, therefore they considered that the divine, human or natural origin of the illnesses influenced in an important way in its nature. Inside this complex causal system, the illnesses caused by the gods, spirits and celestial beings were considered as hot, while those caused by beings of the other realm were cold. The practice of the medicine had a very established organization designing a very advanced system of specialties that allowed them to accumulate a vast experience for the handling of chronic and acute illnesses in different progression phases, which managed with an integral therapy that had a plurality of resources of vegetable origin, animal, and mineral. The surgery was designated as texoxotlaliztli and its cures tepatiliztli. The surgeon was designated as texoxotlaticitl and it developed advanced techniques in the handling of sutures, wounded, drainage of abscesses, fractures and joint dislocations, pterygium, tonsillitis, circumcision, and amputations.