Felix Henrique Paim Kessler
Dados Biográficos
| ID | 1781483 |
|---|---|
| NOME | Felix Henrique Paim Kessler |
| PRENOMES | Felix Henrique Paim |
| SOBRENOME | Kessler |
| ASSINATURA | KESSLER F H P |
| AFILIAÇÕES | Universidade Federal do Rio Grande do Sul |
| ORCID | 0000-0001-7059-2564 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 20 |
| TOTAL DE CITAÇÕES | 16 |
| TOTAL COMO AUTOR | 20 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1997 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 2 |
Banning loot boxes for minors
Brazil's Digital Child and Adolescent Act (2025) prohibits paid loot boxes in games accessible to minors under a public health and child-rights framework, regardless of whether they should be classified as gambling. The law focuses on psychological mechanisms underlying harm, including variable-ratio reinforcement and reward uncertainty, to which adolescents are developmentally vulnerable. It establishes administrative sanctions, including fines …
HIV prevalence in men hospitalized for alcohol use disorder in Brazil
Alcohol is widely consumed in Brazil, yet the prevalence of sexually transmitted infections (STIs)—particularly human immunodeficiency virus (HIV)—among individuals with alcohol use disorder (AUD) remains underexplored. This study aimed to assess HIV prevalence in a sample of hospitalized alcohol users undergoing detoxification and to explore associations with demographic and clinical factors. A consecutive sample of 445 men with AUD was recruite…
Treatment Approaches for Problematic Pornography Use
Proposing an integrative, dynamic and transdiagnostic model for addictions
Several theories have been proposed to explain the complex diagnostic aspects related to addiction disorders and their development. Recent frameworks tend to focus on dimensional perspectives of symptoms rather than categorical systems, since substance use disorders are frequently comorbid with other psychiatric and especially personality disorders. However, useful transdiagnostic models that could integrate clinical evaluation derived from neuro…
Domestic and external violence, parental neglect, and social sanctions among crack users
Background: Substance Use Disorders are often associated with significant levels of domestic and external violence registered among abusers. This investigation aimed to evaluate the Domestic Violence Involvement (DVI) and related gender differences among Crack Cocaine Users in Brazil. Methods: For this purpose, a secondary data analysis of a multicenter cross-sectional study involving 780 Crack Cocaine Users from 6 Brazilian capitals was performe…
Hikikomori in Brazil
“Pandemic fear” and Covid-19
Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digitales de tema americanista a los investigadores y usuarios interesados de cualquier parte del mundo.
Concurrent Use of Alcohol and Crack Cocaine is Associated with High Levels of Anger and Liability to Aggression
The present findings suggest that alcohol and aggression levels may be associated with violent behavior. Concurrent use of alcohol and crack cocaine was related to higher levels of aggression, which may be associated with more severe alterations in behavior and impulse control
The impact of the Covid-19 pandemic on the mental health of healthcare professionals
The 2019 novel coronavirus pandemic (COVID-19) is an international public health emergency unprecedented in modern history 1 . Besides the biological context, and due to the wide and longlasting changes in daily life it may cause, coping with it represents a challenge to psychological resilience. Previous studies have shown that epidemics and contamination outbreaks of diseases have been followed by drastic individual and social psychosocial impa…
The female crack users
Female crack users who sought treatment are a hard to find part of the population. We studied sociodemographic and behavioral characteristics of crack users undergoing treatment in psychosocial care centers for alcohol and other drugs in six Brazilian cities. We carried out a cross-sectional study of 816 crack users and collected data with the Addiction Severity Index. Women were more likely to be in vulnerable situations: had worst levels of edu…
Vulnerabilidades clínicas e sociais em usuários de crack de acordo com a situação de moradia
O estudo teve como objetivo avaliar a gravidade do uso de substâncias psicoativas, situações de violência, saúde física e emocional de usuários de crack que buscam atendimento em Centros de Atenção Psicossocial para Álcool e Drogas (CAPSad), em relação ao status de moradia. Trata-se de um estudo multicêntrico em seis capitais brasileiras, com 564 usuários de crack categorizados em dois grupos: (1) usuários que estiveram em situação de rua (n = 26…
Genomic Instability in Human Lymphocytes from Male Users of Crack Cocaine
Recent research suggests that crack cocaine use alters systemic biochemical markers, like oxidative damage and inflammation markers, but very few studies have assessed the potential effects of crack cocaine at the cellular level. We assessed genome instability by means of the comet assay and the cytokinesis-block micronucleus technique in crack cocaine users at the time of admission to a rehabilitation clinic and at two times after the beginning …
Dependence module of the Mini plus adapted for sugar dependence
This study aimed to analyze the factorial structure and the scale of measurement of the items for dependence of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) adapted for sugar consumption in order to verify if the structural characteristics can be applied to sugar dependence. The questionnaire was applied to a sample of 500 subjects in Brazil (67% female; mean age: 38 y.o.; 43% from weight control clinics; 63% with normal BMI…
Differences in Addiction Severity Between Social and Probable Pathological Gamblers Among Substance Abusers in Treatment in Rio de Janeiro
Processo de desenvolvimento de um questionário para avaliação de abuso e dependência de açúcar
Este estudo descreve o processo de desenvolvimento de um questionário para avaliação de possível abuso e dependência de açúcares extrínsecos não lácticos. Pesquisas recentes mostram que o consumo excessivo de açúcares extrínsecos não lácticos pode levar a alterações no sistema nervoso central a partir da influência destas substâncias no sistema neuroquímico de recompensa. O desenvolvimento desse instrumento ocorreu com base na adaptação do módulo…
Changing Patterns of Cocaine Use and HIV Risks in the South of Brazil
For well over a decade, researchers in Porto Alegre, Brazil, have been documenting the extent of the AIDS epidemic in the region, with a specific focus on the linkages between drug use and HIV seropositivity. Virtually all of the studies conducted during those years found injection drug use (IDU) to be the major vector for HIV seropositivity in this population. However, recent research found that the number of IDUs had declined significantly. Qua…
Tailoring an HIV-prevention intervention for cocaine injectors and crack users in Porto Alegre, Brazil
Brazil has the second largest number of reported AIDS cases in the world. Porto Alegre, like most other large urban centres in Brazil, has been greatly impacted by an AIDS epidemic driven by high rates of drug use and risky sexual behaviours. While epidemiologic surveillance of HIV/AIDS and treatment initiatives for HIV-infected individuals are well developed in Brazil, comparatively little attention has focused on developing interventions direct…
Uso de substâncias, situações de risco e soroprevalência em indivíduos que buscam testagem gratuita para HIV em Porto Alegre, Brasil
Even irregular or occasional drug use increases the odds of seropositivity, particularly if intravenous drugs are used. Sexual transmission played an important role in seropositivity in this sample, indicating that drug use can affect the judgment of risk and thus contribute to HIV transmission
Preditores de soropositividade para HIV em indivíduos não abusadores de drogas que buscam centros de testagem e aconselhamento de Porto Alegre, Rio Grande do Sul, Brasil
Este estudo descreve comportamentos de risco para HIV, obtidos através de questionário, em 570 indivíduos de Porto Alegre que não usavam drogas regularmente. A idade média foi 30,3, 51,1 % eram homens, e a maioria tinha baixa renda (59,1%). A soropositividade foi de 9,9% (13,1% entre homens e 6,9% entre mulheres), associada a sexo masculino, ter mais de 30 anos e baixa renda. Mulheres reportaram mais sexo desprotegido (86,4%) do que homens (74,4%…
The effect of Syzygium cumini (L.) skeels on post-prandial blood glucose levels in non-diabetic rats and rats with streptozotocin-induced diabetes mellitus
The impact of the Covid-19 pandemic on the mental health of healthcare professionals
The 2019 novel coronavirus pandemic (COVID-19) is an international public health emergency unprecedented in modern history 1 . Besides the biological context, and due to the wide and longlasting changes in daily life it may cause, coping with it represents a challenge to psychological resilience. Previous studies have shown that epidemics and contamination outbreaks of diseases have been followed by drastic individual and social psychosocial impa…
Vulnerabilidades clínicas e sociais em usuários de crack de acordo com a situação de moradia
O estudo teve como objetivo avaliar a gravidade do uso de substâncias psicoativas, situações de violência, saúde física e emocional de usuários de crack que buscam atendimento em Centros de Atenção Psicossocial para Álcool e Drogas (CAPSad), em relação ao status de moradia. Trata-se de um estudo multicêntrico em seis capitais brasileiras, com 564 usuários de crack categorizados em dois grupos: (1) usuários que estiveram em situação de rua (n = 26…
Processo de desenvolvimento de um questionário para avaliação de abuso e dependência de açúcar
Este estudo descreve o processo de desenvolvimento de um questionário para avaliação de possível abuso e dependência de açúcares extrínsecos não lácticos. Pesquisas recentes mostram que o consumo excessivo de açúcares extrínsecos não lácticos pode levar a alterações no sistema nervoso central a partir da influência destas substâncias no sistema neuroquímico de recompensa. O desenvolvimento desse instrumento ocorreu com base na adaptação do módulo…
Preditores de soropositividade para HIV em indivíduos não abusadores de drogas que buscam centros de testagem e aconselhamento de Porto Alegre, Rio Grande do Sul, Brasil
Este estudo descreve comportamentos de risco para HIV, obtidos através de questionário, em 570 indivíduos de Porto Alegre que não usavam drogas regularmente. A idade média foi 30,3, 51,1 % eram homens, e a maioria tinha baixa renda (59,1%). A soropositividade foi de 9,9% (13,1% entre homens e 6,9% entre mulheres), associada a sexo masculino, ter mais de 30 anos e baixa renda. Mulheres reportaram mais sexo desprotegido (86,4%) do que homens (74,4%…
The effect of Syzygium cumini (L.) skeels on post-prandial blood glucose levels in non-diabetic rats and rats with streptozotocin-induced diabetes mellitus
Tailoring an HIV-prevention intervention for cocaine injectors and crack users in Porto Alegre, Brazil
Brazil has the second largest number of reported AIDS cases in the world. Porto Alegre, like most other large urban centres in Brazil, has been greatly impacted by an AIDS epidemic driven by high rates of drug use and risky sexual behaviours. While epidemiologic surveillance of HIV/AIDS and treatment initiatives for HIV-infected individuals are well developed in Brazil, comparatively little attention has focused on developing interventions direct…
Uso de substâncias, situações de risco e soroprevalência em indivíduos que buscam testagem gratuita para HIV em Porto Alegre, Brasil
Even irregular or occasional drug use increases the odds of seropositivity, particularly if intravenous drugs are used. Sexual transmission played an important role in seropositivity in this sample, indicating that drug use can affect the judgment of risk and thus contribute to HIV transmission
Preditores de soropositividade para HIV em indivíduos não abusadores de drogas que buscam centros de testagem e aconselhamento de Porto Alegre, Rio Grande do Sul, Brasil
Este estudo descreve comportamentos de risco para HIV, obtidos através de questionário, em 570 indivíduos de Porto Alegre que não usavam drogas regularmente. A idade média foi 30,3, 51,1 % eram homens, e a maioria tinha baixa renda (59,1%). A soropositividade foi de 9,9% (13,1% entre homens e 6,9% entre mulheres), associada a sexo masculino, ter mais de 30 anos e baixa renda. Mulheres reportaram mais sexo desprotegido (86,4%) do que homens (74,4%…
Changing Patterns of Cocaine Use and HIV Risks in the South of Brazil
For well over a decade, researchers in Porto Alegre, Brazil, have been documenting the extent of the AIDS epidemic in the region, with a specific focus on the linkages between drug use and HIV seropositivity. Virtually all of the studies conducted during those years found injection drug use (IDU) to be the major vector for HIV seropositivity in this population. However, recent research found that the number of IDUs had declined significantly. Qua…
Differences in Addiction Severity Between Social and Probable Pathological Gamblers Among Substance Abusers in Treatment in Rio de Janeiro
Processo de desenvolvimento de um questionário para avaliação de abuso e dependência de açúcar
Este estudo descreve o processo de desenvolvimento de um questionário para avaliação de possível abuso e dependência de açúcares extrínsecos não lácticos. Pesquisas recentes mostram que o consumo excessivo de açúcares extrínsecos não lácticos pode levar a alterações no sistema nervoso central a partir da influência destas substâncias no sistema neuroquímico de recompensa. O desenvolvimento desse instrumento ocorreu com base na adaptação do módulo…
Dependence module of the Mini plus adapted for sugar dependence
This study aimed to analyze the factorial structure and the scale of measurement of the items for dependence of the Diagnostic and Statistical Manual of Mental Disorders (DSM-IV) adapted for sugar consumption in order to verify if the structural characteristics can be applied to sugar dependence. The questionnaire was applied to a sample of 500 subjects in Brazil (67% female; mean age: 38 y.o.; 43% from weight control clinics; 63% with normal BMI…
Genomic Instability in Human Lymphocytes from Male Users of Crack Cocaine
Recent research suggests that crack cocaine use alters systemic biochemical markers, like oxidative damage and inflammation markers, but very few studies have assessed the potential effects of crack cocaine at the cellular level. We assessed genome instability by means of the comet assay and the cytokinesis-block micronucleus technique in crack cocaine users at the time of admission to a rehabilitation clinic and at two times after the beginning …
The female crack users
Female crack users who sought treatment are a hard to find part of the population. We studied sociodemographic and behavioral characteristics of crack users undergoing treatment in psychosocial care centers for alcohol and other drugs in six Brazilian cities. We carried out a cross-sectional study of 816 crack users and collected data with the Addiction Severity Index. Women were more likely to be in vulnerable situations: had worst levels of edu…
Vulnerabilidades clínicas e sociais em usuários de crack de acordo com a situação de moradia
O estudo teve como objetivo avaliar a gravidade do uso de substâncias psicoativas, situações de violência, saúde física e emocional de usuários de crack que buscam atendimento em Centros de Atenção Psicossocial para Álcool e Drogas (CAPSad), em relação ao status de moradia. Trata-se de um estudo multicêntrico em seis capitais brasileiras, com 564 usuários de crack categorizados em dois grupos: (1) usuários que estiveram em situação de rua (n = 26…
“Pandemic fear” and Covid-19
Americanae nace como un proyecto conjunto que surge dentro de la Red Europea de Información y Documentación sobre América Latina (REDIAL), y que ha afrontado la Biblioteca de la Agencia Española de Cooperación Internacional para el Desarrollo (AECID). Esta nueva biblioteca virtual hace más accesibles los libros digitales de tema americanista a los investigadores y usuarios interesados de cualquier parte del mundo.
Concurrent Use of Alcohol and Crack Cocaine is Associated with High Levels of Anger and Liability to Aggression
The present findings suggest that alcohol and aggression levels may be associated with violent behavior. Concurrent use of alcohol and crack cocaine was related to higher levels of aggression, which may be associated with more severe alterations in behavior and impulse control
The impact of the Covid-19 pandemic on the mental health of healthcare professionals
The 2019 novel coronavirus pandemic (COVID-19) is an international public health emergency unprecedented in modern history 1 . Besides the biological context, and due to the wide and longlasting changes in daily life it may cause, coping with it represents a challenge to psychological resilience. Previous studies have shown that epidemics and contamination outbreaks of diseases have been followed by drastic individual and social psychosocial impa…
Hikikomori in Brazil
Treatment Approaches for Problematic Pornography Use
Proposing an integrative, dynamic and transdiagnostic model for addictions
Several theories have been proposed to explain the complex diagnostic aspects related to addiction disorders and their development. Recent frameworks tend to focus on dimensional perspectives of symptoms rather than categorical systems, since substance use disorders are frequently comorbid with other psychiatric and especially personality disorders. However, useful transdiagnostic models that could integrate clinical evaluation derived from neuro…
Domestic and external violence, parental neglect, and social sanctions among crack users
Background: Substance Use Disorders are often associated with significant levels of domestic and external violence registered among abusers. This investigation aimed to evaluate the Domestic Violence Involvement (DVI) and related gender differences among Crack Cocaine Users in Brazil. Methods: For this purpose, a secondary data analysis of a multicenter cross-sectional study involving 780 Crack Cocaine Users from 6 Brazilian capitals was performe…
HIV prevalence in men hospitalized for alcohol use disorder in Brazil
Alcohol is widely consumed in Brazil, yet the prevalence of sexually transmitted infections (STIs)—particularly human immunodeficiency virus (HIV)—among individuals with alcohol use disorder (AUD) remains underexplored. This study aimed to assess HIV prevalence in a sample of hospitalized alcohol users undergoing detoxification and to explore associations with demographic and clinical factors. A consecutive sample of 445 men with AUD was recruite…
Banning loot boxes for minors
Brazil's Digital Child and Adolescent Act (2025) prohibits paid loot boxes in games accessible to minors under a public health and child-rights framework, regardless of whether they should be classified as gambling. The law focuses on psychological mechanisms underlying harm, including variable-ratio reinforcement and reward uncertainty, to which adolescents are developmentally vulnerable. It establishes administrative sanctions, including fines …
Medicine (12 obras) · Psychology (12 obras) · Psychiatry (11 obras) · Demography (6 obras) · Environmental health (6 obras) · Adolescent Sexual and Reproductive Health (5 obras) · HIV, Drug Use, Sexual Risk (5 obras) · HIV/AIDS Research and Interventions (5 obras) · Public health (4 obras) · Addiction (3 obras)