Dietary phytoestrogens modulate aggression and activity in social behavior circuits of male mice.

Phytoestrogens comprise biologically active constituents of human and animal diet that can impact on systemic and local estrogen functions in the brain. Here we report on the importance of dietary phytoestrogens for maintaining activity in a brain circuit controlling aggressive and social behavior of male mice. After six weeks of low-phytoestrogen chronic diet (diadzein plus genistein <20 µg/g) a reduction of intermale aggression and altered territorial marking behavior could be observed, compared to littermates on a standard soy-bean based diet (300 µg/g). Further, mice on low-phyto diet displayed a decrease in sociability and a reduced preference for social odors, indicating a general disturbance of social behavior. Underlying circuits were investigated by analysing the induction of the activity marker c-Fos upon social encounter. Low-phyto diet led to a markedly reduced c-Fos induction in the medial as well as the cortical amygdala, the lateral septum, medial preoptic area and bed nucleus of the stria terminalis. No difference between groups was observed in the olfactory bulb. Together our data suggest that dietary phytoestrogens critically modulate social behavior circuits in the male mouse brain.

DNA Methylation Patterns in the Round Goby Hypothalamus Support an On-The-Spot Decision Scenario for Territorial Behavior.

The question as to how early life experiences are stored on a molecular level and affect traits later in life is highly topical in ecology, medicine, and epigenetics. In this study, we use a fish model to investigate whether DNA methylation mediates early life experiences and predetermines a territorial male reproductive phenotype. In fish, adult reproductive phenotypes frequently depend on previous life experiences and are often associated with distinct morphological traits. DNA methylation is an epigenetic mechanism which is both sensitive to environmental conditions and stably inherited across cell divisions. We therefore investigate early life predisposition in the round goby Neogobius melanostomus by growth back-calculations and then study DNA methylation by MBD-Seq in the brain region controlling vertebrate reproductive behavior, the hypothalamus. We find a link between the territorial reproductive phenotype and high growth rates in the first year of life. However, hypothalamic DNA methylation patterns reflect the current behavioral status independently of early life experiences. Together, our data suggest a non-predetermination scenario in the round goby, in which indeterminate males progress to a non-territorial status in the spawning season, and in which some males then assume a specialized territorial phenotype if current conditions are favorable.

Stress-Reducing Function of Matcha Green Tea in Animal Experiments and Clinical Trials.

Theanine, a major amino acid in green tea, exhibits a stress-reducing effect in mice and humans. Matcha, which is essentially theanine-rich powdered green tea, is abundant in caffeine. Caffeine has a strong antagonistic effect against theanine. The stress-reducing effect of matcha was examined with an animal experiment and a clinical trial. The stress-reducing effect of matcha marketed in Japan and abroad was assessed based on its composition. The stress-reducing effect of matcha in mice was evaluated as suppressed adrenal hypertrophy using territorially-based loaded stress. High contents of theanine and arginine in matcha exhibited a high stress-reducing effect. However, an effective stress-reducing outcome was only possible when the molar ratio of caffeine and epigallocatechin gallate (EGCG) to theanine and arginine was less than two. Participants (n = 39) consumed test-matcha, which was expected to have a stress-reducing effect, or placebo-matcha, where no effect was expected. Anxiety, a reaction to stress, was significantly lower in the test-matcha group than in the placebo group. To predict mental function of each matcha, both the quantity of theanine and the ratios of caffeine, EGCG, and arginine against theanine need to be verified.

Estrogen receptor alpha is required in GABAergic, but not glutamatergic, neurons to masculinize behavior.

Masculinization of the altricial rodent brain is driven by estrogen signaling during a perinatal critical period. Genetic deletion of estrogen receptor alpha (Esr1/ERα) results in altered hypothalamic-pituitary-gonadal (HPG) axis signaling and a dramatic reduction of male sexual and territorial behaviors. However, the role of ERα in masculinizing distinct classes of neurons remains unexplored. We deleted ERα in excitatory or inhibitory neurons using either a Vglut2 or Vgat driver and assessed male behaviors. We find that Vglut2-Cre;Esr1lox/lox mutant males lack ERα in the ventrolateral region of the ventromedial hypothalamus (VMHvl) and posterior ventral portion of the medial amygdala (MePV). These mutants recapitulate the increased serum testosterone levels seen with constitutive ERα deletion, but have none of the behavioral deficits. In contrast, Vgat-Cre;Esr1lox/lox males with substantial ERα deletion in inhibitory neurons, including those of the principal nucleus of the bed nucleus of the stria terminalis (BNSTpr), posterior dorsal MeA (MePD), and medial preoptic area (MPOA) have normal testosterone levels, but display alterations in mating and territorial behaviors. These mutants also show dysmasculinized expression of androgen receptor (AR) and estrogen receptor beta (Esr2). Our results demonstrate that ERα masculinizes GABAergic neurons that gate the display of male-typical behaviors.

Is territorial expansion a mechanism for crossmodal plasticity?

Crossmodal plasticity is the phenomenon whereby, following sensory damage or deprivation, the lost sensory function of a brain region is replaced by one of the remaining senses. One of several proposed mechanisms for this phenomenon involves the expansion of a more active brain region at the expense of another whose sensory inputs have been damaged or lost. This territorial expansion hypothesis was examined in the present study. The cat ectosylvian visual area (AEV) borders the auditory field of the anterior ectosylvian sulcus (FAES), which becomes visually reorganized in the early deaf. If this crossmodal effect in the FAES is due to the expansion of the adjoining AEV into the territory of the FAES after hearing loss, then the reorganized FAES should exhibit connectional features characteristic of the AEV. However, tracer injections revealed significantly different patterns of cortical connectivity between the AEV and the early deaf FAES, and substantial cytoarchitectonic and behavioral distinctions occur as well. Therefore, the crossmodal reorganization of the FAES cannot be mechanistically attributed to the expansion of the adjoining cortical territory of the AEV and an overwhelming number of recent studies now support unmasking of existing connections as the operative mechanism underlying crossmodal plasticity.

Medidas judiciais atinentes à atenção em saúde mental de adolescentes em conflito com a lei / Judicial measures related to the mental health ofteenagers in conflict with the law / Medidas legales de atención en salud mental para adolescentes en conflicto con la ley

Com base em uma pesquisa documental realizada na Vara da Infância e Juventude de São Paulo, que continha decisões judiciais determinando o encaminhamento de crianças e adolescentes usuários de substâncias psicoativas para tratamento no campo da saúde mental, este estudo objetivou analisar a orientação das decisões judiciais em relação ao modelo assistencial adotado nos casos concretos: o modelo psiquiátrico clássico ou o modelo de assistência proposto pela reforma psiquiátrica. Os resultados revelaram que, "a priori", não há uma orientação assistencial definida, havendo a necessidade da análise do caso concreto, especialmente em relação a duas condições essenciais para a determinação do paradigma assistencial no campo da saúde mental adotado nas decisões judiciais: avaliação da esfera territorial dos pacientes e o conhecimento do específico serviço de saúde mental indicado para o tratamento.

This research consists of a documental approach performed in the Court for Minors of São Paulo. It includes the judiciary decisions related to the process of forwarding children and teenagers that are users of psychoactive substances for their treatment in the mental health system. This study analyzes the orientation of judicial decisions by their relation to the model of care adopted in real cases. Here, two models are discussed: the psychiatric classic model and the model of care proposed by the psychiatric reform. The results revealed that, in advance, there are not specific orientations that define the health assistance given to children and teenagers. Thus, two conditions for determining the mental health paradigm that is adopted in judiciary decisions are needed: first, an evaluation of the territorial sphere of the patients and second, the knowledge of the specific mental health service that has been indicated for the treatment.

La presente consiste en una investigación documental realizada en la Vara de Infancia y Juventud de São Paulo, Brasil. La misma está referida a decisiones judiciales que determinan el proceso de orientación de niños y adolescentes usuarios de drogas para su tratamiento en el campo de la salud mental. Este estudio propone analizar la orientación de las sentencias judiciales en lo que hace al modelo adoptado en los casos particulares: el modelo psiquiátrico clásico o el modelo de atención propuesto por la reforma psiquiátrica. Los resultados mostraron que no hay "a priori" una orientación asistencial definida, requeriéndose del análisis de los casos de manera individual. El estudio nota que ello ocurre sobre todo em relación con dos condiciones esenciales para determinar el paradigma el cuidado de la salud mental adoptada en las decisiones judiciales: evaluación del ámbito territorial de los pacientes y conocimiento del servicio de salud mental específico que ha sido indicado para el tratamento.

Why Do Migratory Birds Sing on Their Tropical Wintering Grounds?

Many long-distance migratory birds sing extensively on their tropical African wintering grounds, but the function of this costly behavior remains unknown. In this study, we carry out a first empirical test of three competing hypotheses, combining a field study of great reed warblers (Acrocephalus arundinaceus) wintering in Africa with a comparative analysis across Palearctic-African migratory songbird species. We asked whether winter song (i) functions to defend nonbreeding territories, (ii) functions as practice to improve complex songs for subsequent breeding, or (iii) is a nonadaptive consequence of elevated testosterone carryover. We found support for neither the long-assumed territory-defense hypothesis (great reed warblers had widely overlapping home ranges and showed no conspecific aggression) nor the testosterone-carryover hypothesis (winter singing in great reed warblers was unrelated to plasma testosterone concentration). Instead, we found strongest support for the song-improvement hypothesis, since great reed warblers sang a mate attraction song type rather than a territorial song type in Africa, and species that sing most intensely in Africa were those in which sexual selection acts most strongly on song characteristics; they had more complex songs and were more likely to be sexually monochromatic. This study underlines how sexual selection can have far-reaching effects on animal ecology throughout the annual cycle.

Superoxide dismutase deficiency impairs olfactory sexual signaling and alters bioenergetic function in mice.

Oxidative stress (an overproduction of reactive oxygen species in relation to defense mechanisms) may restrict investment in life history traits, such as growth, reproduction, lifespan, and the production of sexual signals to attract mates. The constraint on sexual signaling by oxidative stress is of particular interest because it has been proposed as a mechanism ensuring that only good-quality males produce the most attractive sexual signals. Despite these predictions, evidence supporting this theory is, at best, equivocal. We used a superoxide dismutase knockout mouse to demonstrate that oxidative stress directly impairs investment in morphological (preputial glands) and molecular (major urinary proteins) components of olfactory signaling essential for mate attraction. By maintaining males in a much more competitive environment than usual for mouse laboratory experiments, we also revealed a range of phenotypes of superoxide dismutase deficiency not observed in previous studies of this mouse model. This range included impaired bioenergetic function, which was undetectable in the control environment of this study. We urge further examination of model organisms in seminatural conditions and more competitive laboratory environments, as important phenotypes can be exposed under these more demanding conditions.

Usos da ôLuzö e da ôcracolândiaö: etnografia de práticas espaciais / Usage of ôLuzö and ôcracolândiaö: fieldwork of spatial practices

Introdução: Não há quem, no Brasil, não tenho ouvido falar da ôcracolândiaö paulistana. Ela é fonte inesgotável de notícias, de histórias e de pânico. A mais famosa territorialidade de uso de crack do país é considerada lugar que se deve evitar, lugar de perigo, lugar degradado. Também de degredo. E, por isso mesmo e em vários aspectos, lugar de grande atração. Pensar sobre ela exige criatividade e rigor. Objetivos: Numa direção contrária às visões alarmistas, esta territorialidade será descrita a partir da sua relação com o entorno, notadamente o bairro da Luz, afastando-se de abordagens que tomam tais espaços como fronteiras impenetráveis, isoladas fisicamente e, pior, moralmente. Procedimentos Metodológicos: Serão destacadas etnograficamente a grande quantidade de pessoas que por ali circula, bem como os distintos usos e práticas espaciais observados. Resultados: com esta etnografia, pretende-se conferir visibilidade às disputas, interações e conexões que fazem uma cidade e contribuir para uma visão acurada desta territorialidade. (AU)

Integration of primary health services: being put together does not mean they will work together.

BACKGROUND: This paper reports on an Australian experience of co-locating a range of different primary health services into one building, with the aim of providing integrated services. It discusses some of the early challenges involved with moving services together and reasons why collaborative and integrated working relationships to improve the clients' journey, may remain elusive. METHODS: Ethnographic observational data was collected within a GP plus site as part of day-to-day interactions between the research officer and health professionals. This involved observations of team processes within and across teams at the site. Observations were thematically analysed using a social anthropological approach. RESULTS: Three main themes arose from the analysis: Infrastructural impediments to collaboration; Territorialism; and Interprofessional practice (IPP) simply not on the agenda. The experience of this setting demonstrates that dedicated staff and resources are needed to keep IPP on the agenda of health service organisations. This is especially important where organisations are attempting to implement new models of collaborative and co-located services. Furthermore, it shows that establishing IPP within newly co-located services is a process that needs time to develop, as part of teams building trust with each other in new circumstances, in order to eventually build a new cultural identity for the co-located services. CONCLUSIONS: Co-located health service systems can be complex, with competing priorities and differing strategic plans and performance indicators to meet. This, coupled with the tendency for policy makers to move on to their next issue of focus, and to shift resources in the process, means that adequate time and resources for IPP are often overlooked. Shared interprofessional student placements may be one way forward.

Timing vocal behaviour: experimental evidence for song overlap avoidance in Eurasian wrens.

Timing during vocal interactions can play a significant role in terms of audibility as signal overlap may lead to masking of acoustic details for both of the interacting animals as well as for third-party eavesdroppers. Here we investigated timing aspects experimentally in Eurasian wrens (Troglodytes troglodytes) using non-interactive playback. We applied a randomized overlay method incorporating the temporal pattern of singing by the focal bird to establish a null model and to test observed patterns of overlap against this null model. We used different stimulus song rates but temporal response patterns always resulted in significantly lower levels of overlap than expected by chance. The male wrens avoided overlapping by timing their song starts predominately right after the end of stimulus songs, but they did not avoid being overlapped by the stimulus songs. The territorial males typically raised their song rates during and after playback with a tendency to shorten between-song intervals while keeping song durations unchanged. Higher song rates of the playback stimuli increased the extent to which responders were being overlapped by the stimulus songs. Our data provide experimental evidence for a timing ability in Eurasian wrens by which they reduce mutual interference during vocal interactions.

Escalation of aggressive vocal signals: a sequential playback study.

Rival conspecifics often produce stereotyped sequences of signals as agonistic interactions escalate. Successive signals in sequence are thought to convey increasingly pronounced levels of aggressive motivation. Here, we propose and test a model of aggressive escalation in black-throated blue warblers, presenting subjects with two sequential and increasingly elevated levels of threat. From a speaker outside the territorial boundary, we initiated an interaction (low-threat level), and from a second speaker inside the territory, accompanied by a taxidermic mount, we subsequently simulated a territorial intrusion (escalated threat level). Our two main predictions were that signalling behaviours in response to low-threat boundary playback would predict signalling responses to the escalated within-territory threat, and that these latter signalling behaviours would in turn reliably predict attack. We find clear support for both predictions: (i) specific song types (type II songs) produced early in the simulated interaction, in response to boundary playback, predicted later use of low-amplitude 'soft' song, in response to within-territory playback; and (ii) soft song, in turn, predicted attack of the mount. Unexpectedly, use of the early-stage signal (type II song) itself did not predict attack, despite its apparent role in aggressive escalation. This raises the intriguing question of whether type II song can actually be considered a reliable aggressive signal. Overall, our results provide new empirical insights into how songbirds may use progressive vocal signalling to convey increasing levels of threat.

Robust behavioral effects of song playback in the absence of testosterone or corticosterone release.

Some species of songbirds elevate testosterone in response to territorial intrusions while others do not. The search for a general explanation for this interspecific variation in hormonal response to social challenges has been impeded by methodological differences among studies. We asked whether song playback alone is sufficient to bring about elevation in testosterone or corticosterone in the dark-eyed junco (Junco hyemalis), a species that has previously demonstrated significant testosterone elevation in response to a simulated territorial intrusion when song was accompanied by a live decoy. We studied two populations of juncos that differ in length of breeding season (6-8 vs. 14-16 weeks), and conducted playbacks of high amplitude, long-range song. In one population, we also played low amplitude, short-range song, a highly potent elicitor of aggression in juncos and many songbirds. We observed strong aggressive responses to both types of song, but no detectable elevation of plasma testosterone or corticosterone in either population. We also measured rise in corticosterone in response to handling post-playback, and found full capacity to elevate corticosterone but no effect of song class (long-range or short-range) on elevation. Collectively, our data suggest that males can mount an aggressive response to playback without a change in testosterone or corticosterone, despite the ability to alter these hormones during other types of social interactions. We discuss the observed decoupling of circulating hormones and aggression in relation to mechanisms of behavior and the cues that may activate the HPA and HPG axes.

An aggression-specific cell type in the anterior hypothalamus of finches.

The anterior hypothalamus (AH) is a major integrator of neural processes related to aggression and defense, but cell types in the AH that selectively promote aggression are unknown. We here show that aggression is promoted in a very selective and potent manner by dorsal AH neurons that produce vasoactive intestinal polypeptide (VIP). Fos activity in a territorial finch, the violet-eared waxbill (Estrildidae: Uraeginthus granatina) is positively related to aggression in the dorsal AH, overlapping a population of VIP-producing neurons. VIP is known to promote territorial aggression in songbirds, and thus we used antisense oligonucleotides to selectively block AH VIP production in male and female waxbills. This manipulation virtually abolishes aggression, reducing the median number of displacements in a 3-min resident-intruder test from 38 in control subjects to 0 in antisense subjects. Notably, most antisense and control waxbills exhibit an agonistic response such as a threat or agonistic call within 2 s of intrusion. Thus, antisense subjects clearly classify intruders as offensive, but fail to attack. Other social and anxiety-like behaviors are not affected and VIP cell numbers correlate positively with aggression, suggesting that these cells selectively titrate aggression. Additional experiments in the gregarious zebra finch (Estrildidae: Taeniopygia guttata) underscore this functional specificity. Colony-housed finches exhibit significant reductions in aggression (primarily nest defense) following AH VIP knockdown, but no effects are observed for social preferences, pair bonding, courtship, maintenance behaviors, or anxiety-like behaviors. To our knowledge, these findings represent a unique identification of an aggression-specific cell type in the brain.

High-dose vitamin C: does it exacerbate the effect of psychosocial stress on liver? Biochemical and histological study.

AIM: Chronic stress has been implicated as a contributing factor in liver injury. However, other factors that can contribute to the severity of stress effect in liver injury have not been well characterized. In this study, the combined effect of chronic psychosocial stress and variable dosing levels of vitamin C on liver injury, have been studied. METHODS: Stress was chronically induced using intruder method. Vitamin C was administered by oral gavage. Both biochemical and histopathological measures were undertaken. RESULTS: The results showed that low (50mg/kg/day) and moderate (150 mg/kg/day) doses of vitamin C alone or in combination with chronic stress had no effect on liver. However, combination of high dose of vitamin C (500 mg/kg/day) and chronic stress induced various histopathological liver lesions in most of animals in the group that was stressed and supplemented with high dose vitamin C. CONCLUSION: Results of this study show a dose-dependent effect for vitamin C in exacerbating stress contribution to liver injury.

Povos indígenas no Brasil, 2006-2010 / Native peoples in Brazil, 2006-2010

A série iniciada em 1980 chega ao décimo-primeiro volume trazendo na capa o líder kayapó Raoni Metuktire, contundente em suas críticas contra a usina hidrelétrica de Belo Monte, na Volta Grande do Rio Xingu, no Pará. Desde os anos 1980, Raoni ergue sua voz contra o projeto que tornou-se obra símbolo do Programa de Aceleração do crescimento (PAC) no governo Lula e prossegue no governo Dilma Rousseff. Mesmo modificado em relação ao projeto original, os povos indígenas das áreas afetadas por Belo Monte não foram ouvidos conforme prevê a Convenção 169 da OIT. Embora os Kayapó não sejam diretamente afetados pela barragem, a suspeita é que para garantir sua viabilidade econômica, outras usinas venham em seguida, alcançando então a área Kayapó. Esta edição de Povos Indígenas no Brasil 2006-2010 resume a situação indígena no período por meio 165 artigos assinados, 810 notícias extraídas e resumidas a partir de 175 fontes, 228 fotos e 33 mapas. Inclui pela primeira vez um caderno especial de 32 páginas com imagens de destaques. As informações estão organizadas em seis capítulos temáticos e 19 regionais, totalizando 778 páginas que dão uma visão geral sobre 235 povos indígenas que vivem no Brasil e falam cerca de 180 línguas. Destes, 49 habitam também o outro lado da fronteira, em países que fazem limite com o Brasil.

Territorial expansion and primary state formation.

A major research problem in anthropology is the origin of the state and its bureaucratic form of governance. Of particular importance for evaluating theories of state origins are cases of primary state formation, whereby a first-generation state evolves without contact with any preexisting states. A general model of this process, the territorial-expansion model, is presented and assessed with archaeological data from six areas where primary states emerged in antiquity: Mesoamerica, Peru, Egypt, Mesopotamia, the Indus Valley, and China. In each case, the evidence shows a close correspondence in time between the first appearance of state institutions and the earliest expansion of the state's political-economic control to regions lying more than a day's round-trip from the capital. Although additional research will add detail and clarity to the empirical record, the results to date are consistent with the territorial-expansion model, which argues that the success of such long-distance expansion not only demanded the bureaucratization of central authority but also helped provide the resources necessary to underwrite this administrative transformation.

Seasonal differences of gene expression profiles in song sparrow (Melospiza melodia) hypothalamus in relation to territorial aggression.

BACKGROUND: Male song sparrows (Melospiza melodia) are territorial year-round; however, neuroendocrine responses to simulated territorial intrusion (STI) differ between breeding (spring) and non-breeding seasons (autumn). In spring, exposure to STI leads to increases in luteinizing hormone and testosterone, but not in autumn. These observations suggest that there are fundamental differences in the mechanisms driving neuroendocrine responses to STI between seasons. Microarrays, spotted with EST cDNA clones of zebra finch, were used to explore gene expression profiles in the hypothalamus after territorial aggression in two different seasons. METHODOLOGY/PRINCIPAL FINDINGS: Free-living territorial male song sparrows were exposed to either conspecific or heterospecific (control) males in an STI in spring and autumn. Behavioral data were recorded, whole hypothalami were collected, and microarray hybridizations were performed. Quantitative PCR was performed for validation. Our results show 262 cDNAs were differentially expressed between spring and autumn in the control birds. There were 173 cDNAs significantly affected by STI in autumn; however, only 67 were significantly affected by STI in spring. There were 88 cDNAs that showed significant interactions in both season and STI. CONCLUSIONS/SIGNIFICANCE: Results suggest that STI drives differential genomic responses in the hypothalamus in the spring vs. autumn. The number of cDNAs differentially expressed in relation to season was greater than in relation to social interactions, suggesting major underlying seasonal effects in the hypothalamus which may determine the differential response upon social interaction. Functional pathway analyses implicated genes that regulate thyroid hormone action and neuroplasticity as targets of this neuroendocrine regulation.

Potential mechanism of sound production in Oreochromis niloticus (Cichlidae).

Although acoustic communication is an integral part of cichlid behaviour, its mechanism has never been identified before. In the present study, a combination of approaches was used to investigate the sound-producing mechanism of Oreochromis niloticus. Synchronisation of high-speed video data (500 frames s(-1)) and cineradiographies (250 frames s(-1)) with the sound recordings made it possible to locate the different body parts involved in sound production in territorial males. Sounds are made during a backward movement of the pelvic and pectoral girdles and a forward movement of the second pterygiophore of the anal fin. Various electrostimulation experiments, dissections and observation of histological cross-sections revealed a set of bundles (that we call the vesica longitudinalis) situated in the hypaxial musculature, ventro-laterally to the swimbladder. Contraction of these bundles should result in compression of the rib cage and also of the swimbladder, because of its close association with the serosa and ribs. Deflation of the swimbladder resulted in a reduced sound intensity.