Publications by authors named "Gama C"

Article Synopsis
  • An air quality monitoring campaign in Luanda, Angola, in June 2023 examined gaseous pollutants at 25 locations, finding that traffic-heavy areas had higher levels of benzene, toluene, SO, and NO, but these were within WHO guidelines.
  • * Ozone levels were notably higher than in other African regions, with heavy traffic areas showing a strong potential for ozone formation, primarily from compounds like m,p-xylene and toluene.
  • * Despite moderate risk for non-cancer diseases across most sites, the Mulenvos landfill showed a high hazard quotient, and overall cancer risks exceeded acceptable levels, primarily driven by naphthalene exposure.*
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"Very hot beverage" (>65°C) consumption is an IARC probable carcinogen and may contribute to the African esophageal cancer burden. We conducted community cross-sectional exposure studies of hot beverage consumption in Kenya and Malawi during 2018-2019, aiming to: (i) implement a detailed measurement protocol incorporating three measurements of sip temperature and volume so as to predict each sip's intra-esophageal liquid temperature (IELT); (ii) examine variations by seasonality, drinking venue and age, including children. 246 participants were included, of whom 236 had drink measurements (52 children and 183 adults).

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Unlabelled: Despite the abundance of literature on treatment-resistant depression (TRD), there is no universally accepted definition of TRD, and available treatment pathways for the management of TRD vary across the Latin American region, highlighting the need for a uniform definition and treatment principles to optimize the management of TRD in Latin America.

Methods: Following a thematic literature review and pre-meeting survey, a Latin America expert panel comprising 14 psychiatrists with clinical experience in managing patients with TRD convened and utilized the RAND/UCLA appropriateness method to develop consensus-based recommendations on the appropriate definition of TRD and principles for its management.

Results: The expert panel agreed that 'treatment-resistant depression' (TRD) is defined as 'failure of two drug treatments of adequate doses, for 4-8 weeks duration with adequate adherence, during a major depressive episode'.

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Citrus bergamia is a citric species known as bergamot. The species is widely used due to its derivatives, such as juices, extracts, and essential oil. Specifically, the bergamot essential oil (BEO) is of great interest, with a chemical composition rich in terpenes and esters.

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Objectives: To evaluate relative expression of genes with the potential to translate environmental stimuli into long-term alterations in the brain - namely Early Growth Response (EGR)1, EGR3, and Cryptochrome Circadian Regulator 2 (CRY2) - in peripheral blood from patients with Bipolar Disorder (BD), Schizophrenia (SZ), Major Depressive Disorder (MDD) and healthy controls (HC).

Methods: Thirty individuals ranging from 18 to 60 years were recruited for each group (BD, SZ, MDD or HC) from a Brazilian public hospital. Therefore, individuals' peripheral blood was collected and EGR1, EGR3 and CRY2 gene expression analyzed by PCR Real Time.

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After the oil spill disaster occurred in 2019, various events of tar balls reaching the Brazilian coast and archipelagos have been reported. The hypothesis here is that the oil/waste dumped in international waters by ships on-route to Cape of Good Hope is reaching the Brazilian coast. On that account, 30-year probabilistic simulations were used to estimate the probability of dumped oil residue reaching the Brazilian coast.

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Early weight gain following the diagnosis of schizophrenia (SCZ) has been associated with improved daily functioning. However, in the general population and in other psychiatric conditions such as bipolar disorder, increased body mass index (BMI) has been associated with worse functioning. The data on this association in chronic individuals with SCZ is still scarce.

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Gender inequality across the world has been associated with a higher risk to mental health problems and lower academic achievement in women compared to men. We also know that the brain is shaped by nurturing and adverse socio-environmental experiences. Therefore, unequal exposure to harsher conditions for women compared to men in gender-unequal countries might be reflected in differences in their brain structure, and this could be the neural mechanism partly explaining women's worse outcomes in gender-unequal countries.

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Clozapine presents immunoregulatory properties not well understood. To address this issue, we performed this systematic review to evaluate the immune alterations induced by clozapine and its relationship with the drug's clinical response and compare it with other antipsychotics. Our systematic review has selected nineteen studies meeting the inclusion criteria, from which eleven were included in the meta-analysis, totalizing 689 subjects distributed over three different comparisons.

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In recent decades, public policies of the Unified Health System (SUS) in Brazil have structured a community mental health care network (RAPS) based on various community actions and services. This study carried out evaluative research on the implementation of the structure and process dimensions of this care network in Minas Gerais, the second most populous state of Brazil, generating indicators that can enhance the strategic management of the public health system in the strengthening the psychosocial care in the state. The application of a multidimensional instrument, previously validated (IMAI-RAPS), in 795 of the 853 municipalities in Minas Gerais was carried out between June and August 2020.

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Metamizole is a drug with analgesic and antipyretic properties widely available in Portugal. Its use is highly controversial because of the risk of agranulocytosis, a rare but serious adverse event. A 70-year-old female patient with a recent history of treatment with metamizole for post-surgery fever and pain presented to the ED with sustained fever, diarrhea, and painful mouth ulcers.

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Within the scope of the Aveiro STEAM City project, an air quality monitoring network was installed in the city of Aveiro (Portugal), to evaluate the potential of sensors to characterize spatial and temporal patterns of air quality in the city. The network consists of nine sensors stations with air quality sensors (PM10, PM2.5, NO, O and CO) and two meteorological stations, distributed within selected locations in the city of Aveiro.

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Article Synopsis
  • Climate change significantly impacts public health, contributing to injury mortality, which represents 8% of global deaths.
  • A study conducted in six provinces of China from 2013-2019 indicates that for each 1°C rise in temperature, injury mortality risk increases by 0.50%, with intentional injuries seeing a higher risk than unintentional ones.
  • Projections for the 2090s suggest that China could experience an additional 156,586 injury deaths due to temperature increases, particularly affecting young males and those in Western regions, highlighting the need for climate-adaptive public health policies.
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This study aimed to present the prevalence of household food insecurity in different territories of the city of Salvador, Bahia State, Brazil, and to analyze demographic and socio-environmental factors associated with it. The data used are from a larger survey named Quality of the Urban Environment of Salvador - QUALISalvador, carried out from 2018 to 2020 in in the city. Food insecurity was assessed using the Brazilian Food Insecurity Scale.

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Objective: Clozapine is a second-generation antipsychotic indicated for treatment-resistant schizophrenia. Studies in several countries have shown a low rate of clozapine use despite the fact that approximately 30% of schizophrenia cases are treatment-resistant. In Brazil, few studies have addressed the frequency and variety of antipsychotic use in individuals diagnosed with schizophrenia (ICD F20).

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Article Synopsis
  • Bipolar disorder (BD) and schizophrenia (SZ) are chronic mental health conditions that affect cognitive abilities, particularly verbal memory, which is crucial for functioning and may decline with age.
  • A study evaluated verbal memory over five years in 31 BD patients and 27 SZ patients, using various assessment tools to gather data.
  • Results indicated that SZ patients had poorer verbal memory compared to BD patients, but both groups showed no significant changes in memory performance over time, suggesting a stable cognitive trajectory for both disorders.
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Article Synopsis
  • Verbal memory (VM) is lower in schizophrenia (SZ) and bipolar disorder (BD) compared to healthy controls, and it is linked to psychosocial functioning, but the specific processes involved, such as semantic clustering, haven't been extensively studied.
  • In a study with 495 participants, SZ showed the worst VM performance, followed by BD and then healthy controls, with healthy controls using semantic clustering more effectively, affecting the link between VM and functioning.
  • The findings suggest that SZ and BD may rely on different cognitive strategies that do not involve semantic clustering, highlighting the need for cognitive remediation approaches focused on improving VM in these disorders.*
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The present study sought to explore the factors associated with the odds of having probable depression and posttraumatic stress disorder (PTSD) related to traumatic COVID-19 experiences and their impact on health care workers in distinct categories. In this cross-sectional study, 1843 health care workers (nurses, nurse technicians, physicians, physical therapists, and other healthcare workers) were recruited via convenience sampling. A survey was administered to obtain information regarding sociodemographic, occupational, and mental health status.

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This article describes a digital workflow for ceramic veneer preparation using computer-aided design and computer-aided manufacturing technology. A digital waxing was planned on the exocad software program to reestablish esthetic and functional parameters. Then, the digital guides for veneer preparation were designed by using the Meshmixer design software program to control the tooth structure removed during preparation to the minimal thickness necessary for the definitive restorations.

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Background: Schizophrenia (SZ) is a complex brain disorder linked to cognitive and neurostructural abnormalities that involves genetic and environmental factors with obstetric complications (OCs) at birth conferring a high risk for the disease. Indeed, current research in the general population describes the deleterious effect of OCs on cognitive performance in adulthood. With this rationale, we aim to review the relationship between OCs and cognition in SZ and related psychotic disorders.

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The aim of this study is to analyze home food (in)security via intersectionality. The data are from the cross-sectional study Quality of the Urban Environment of Salvador - QUALISalvador, conducted from 2018 to 2020 in Salvador, Bahia State, Brazil. A structured questionnaire and the Brazilian Food Insecurity Scale were used.

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The Coronavirus Disease 2019 (COVID-19) pandemic has exposed healthcare workers (HCW) to traumatic situations that might lead to the development of posttraumatic stress disorder (PTSD). An important vulnerability factor for PTSD is the peritraumatic tonic immobility (TI) reaction, an involuntary and reflexive defensive response evoked by an intense and inescapable threat. TI is largely understudied in humans and has not been investigated during trauma related to COVID-19.

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