Net ecosystem metabolism (NEM) was measured in the Piauí River estuary, NE Brazil. A mass balance of C, N, and P was used to infer its sources and sinks. Dissolved inorganic carbon (DIC) concentrations and fluxes were measured over a year along this mangrove dominated estuary. DIC concentrations were high in all estuarine sections, particularly at the fluvial end member at the beginning of the rainy season. Carbon dioxide concentrations in the entire estuary were supersaturated throughout the year and highest in the upper estuarine compartment and freshwater, particularly at the rainy season, due to washout effects of carbonaceous soils and different organic anthropogenic effluents. The estuary served as a source of DIC to the atmosphere with an estimated flux of 13 mol CO 2 m −2 year −1 . Input from the river was 46 mol CO 2 m −2 year −1 . The metabolism of the system was heterotrophic, but short periods of autotrophy occurred in the lower more marine portions of the estuary. The pelagic system was more or less balanced between auto-and heterotrophy, whereas the benthic and intertidal mangrove region was heterotrophic. Estimated annual NEM yielded a total DIC production in the order of 18 mol CO 2 m −2 year −1 . The anthropogenic inputs of particulate C, N, and P, dissolved inorganic P (DIP), and DIC were significant. The fluvial loading of particulate organic carbon and dissolved inorganic nitrogen (DIN) was largely retained in two flow regulation and hydroelectric reservoirs, promoting a reduction of C:N and C:P particulate ratios in the estuary. The net nonconservative fluxes obtained by a mass balance approach revealed that the estuary acts as a source of DIP, DIN, and DIC, the latter one being almost equivalent to the losses to the atmosphere. Mangrove forests and tidal mudflats were responsible for most of NEM rates and are the main sites of organic decomposition to sustain net heterotrophy. The main sources for this organic matter are the fluvial and anthropogenic inputs. The mangrove areas are the highest estuarine sources of DIP, DIC, and DIN.

A microcefalia pode ser definida como uma redução significante na circunferência ocipitofrontal da cabeça. Desta forma, ela é um achado clínico e não deve ser descrita como uma doença. Suas consequências são dependentes da área cerebral afetada. Sabendo que o crescimento facial é dependente do crescimento do crânio, supõem-se que a microcefalia também possa causar deformações faciais e distúrbios em funções como fonação, mastigação e deglutição. O Hospital Universitário da Universidade Federal de Sergipe desenvolve um trabalho com bebês microcefálicos e proporciona atendimento multiprofissional para acompanhamento desses pacientes, a Odontologia foi incluída nesse grupo de trabalho a partir da iniciativa desse estudo. O presente trabalho teve como objetivo analisar as funções orais de bebês diagnosticados com microcefalia em acompanhamento no Hospital Universitário de Sergipe. Achados clínicos de importante relevância foram descritos baseados no acompanhamento destes bebês. Os resultados obtidos mostraram que as funções mais afetadas foram da deglutição, respiração, tonicidade muscular e erupção dentária. Conclui-se que devido à variabilidade e à imprevisibilidade das consequências da microcefalia, é imprescindível o acompanhamento preventivo odontológico destes casos.

, BRAZIL). Metabolic rates were determined by dissolved oxigen changes in light and dark bottles, filled with river water and after input of mixed effluent concentrations. In another experiment, dissolved inorganic nutrients, chlorophyll-α and other physico-chemical parameters were analyzed. Water column showed higher decomposition than production rates. Waste inputs increased primary production rates, but in higher concentrations forced the system to heterotrophy. The natural richness of macrophytes and macroalgae could be limiting the phytoplanktonic production by phosphorus assimilation. Observation of the nitrogenated inorganic nutrients suggest that the natural pelagic system is directed to nitrification. Mixed waste input inverted this trend, toward denitrification.

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Background There is evidence that chemosensory dysfunctions, including smell and taste disorders, are common findings in patients with SARS-CoV-2 infection. However, the underlying biological mechanisms and the role of inflammatory markers are still poorly understood. Aim To investigate the inflammatory biomarkers levels in patients with COVID-19 presenting chemosensory dysfunctions. Methods This review was conducted according to the Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guideline. A systematic literature search was performed from January 1, 2020, to May 12, 2022. Observational studies that provided data on hematological, biochemical, infection-related indices and cellular immunity, and coagulation function in patients with COVID-19 experiencing smell and/or taste disorders were considered eligible. Effect sizes were reported as standardized mean difference (SMD) with 95% confidence intervals (CI). A negative effect size indicated that the inflammatory biomarker levels were lower among patients with chemosensory dysfunctions. Results Eleven studies were included. Patients with chemosensory disturbances had lower levels of leukocytes (SMD − 0.18, 95% CI − 0.35 to − 0.01, p = 0.04), lactate dehydrogenase (SMD − 0.45, 95% CI − 0.82 to − 0.09, p = 0.01), IL-6 (SMD − 0.25, 95% CI − 0.44 to − 0.06, p < 0.01), and C-reactive protein (SMD − 0.33, 95% CI − 0.58 to − 0.08, p < 0.01) than patients without chemosensory disturbances. Conclusion Patients with SARS-CoV-2 infection who have olfactory and gustatory disorders have a lower inflammatory response than patients who do not have chemosensory alterations. The presence of these symptoms may indicate a more favorable clinical course for COVID-19. Supplementary Information The online version contains supplementary material available at 10.1007/s10787-022-01066-z.