Roberta Cattaneo Horn’s research while affiliated with Girijananda Chowdhury Institute of Pharmaceutical Science and other places

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Publications (13)


Figure 1 -Antioxidant enzyme levels in the plasma of farmers occupationally exposed to pesticides
Perfil redox e inflamatório de agricultores expostos a agrotóxicos
  • Article
  • Full-text available

January 2022

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16 Reads

Ciência e Natura

Roberta Cattaneo Horn

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Mariana Spanamberg Mayer

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Durante a exposição a agrotóxicos ocorrem alterações fisiológicas no organismo humano, como o estresse oxidativo, caracterizado por um desequilíbrio entre o sistema de defesa antioxidante e a geração de espécies reativas. Os agrotóxicos podem ocasionar alterações inflamatórias, em algumas citocinas, que são essenciais para o funcionamento do nosso organismo. Neste contexto, o objetivo desse estudo foi avaliar o perfil oxidativo e inflamatório de agricultores expostos a agrotóxicos. Foram utilizadas amostras de sangue de 50 agricultores e 50 indivíduos não expostos a agrotóxicos (Grupo Controle – GC). Foram mensurados no plasma dos participantes marcadores de dano oxidativo e marcadores inflamatórios. Foi encontrada uma elevação nos níveis de TBARS (p<0,0001), IL-6 (p=0,03700), IL-8 (p=0,0011) e IL-10 (p=0,0011), diminuição da atividade das enzimas: SOD (p<0,001), CAT (p=0,0251), GPx (p<0,001), GST (p<0,0070), GR (p<0,001), GSH (p<0,0001) e BChE (p<0,0001) nos agricultores avaliados em relação aos dados do GC. Os agricultores demonstraram um elevado dano oxidativo, baixos níveis de antioxidantes e alterações inflamatórias.

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AVALIAÇÃO DA QUALIDADE DE COMPRIMIDOS DISPENSADOS EM UMA FARMÁCIA PÚBLICA DO NOROESTE DO RIO GRANDE DO SUL

June 2020

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48 Reads

Revista Contexto & Saúde

O controle de qualidade é um processo importante após o preparo de medicamentos e deve abranger todas as etapas da produção. Desvios na qualidade de um medicamento podem causar diversos danos à saúde do paciente. O Sistema Único de Saúde (SUS) conta com distribuição gratuita de medicamentos para a população e a aquisição desses medicamentos é feita através de licitações. Nesse sentido, o objetivo deste trabalho foi realizar testes físico-químicos de controle de qualidade de comprimidos dispensados em uma Farmácia Pública de um município do noroeste do Rio Grande do Sul. Foram fornecidos pela Farmácia Pública, os seguintes medicamentos: furosemida 40 mg, enalapril de 10 mg e propranolol 40 mg. Os testes realizados foram: análise do aspecto físico, peso médio, friabilidade, tempo de desintegração e doseamento. A furosemida foi reprovada no teste do peso médio e aprovada nos demais testes. Já o propranolol foi reprovado no ensaio de doseamento, encontrando-se abaixo das especificações. O enalapril apresentou conformidade em todos os testes realizados. Esses resultados demonstram que os medicamentos podem comprometer a saúde do usuário do Sistema público e que esses requisitos podem ser utilizados para qualificar os fornecedores que participam dos processos licitatórios.


Inflammatory markers. Total leukocyte numbers (a), neutrophil number (b) serum concentration of proinflammatory cytokines IL-1 (c), and plasmatic fibrinogen (d) in healthy cows (n = 22), cows presenting subclinical endometritis (n = 17), and clinical endometritis (n = 22). Data are presented as means ± SD. Groups with different letters are statistically different (one-way ANOVA, Tukey test P < 0.05)
Cholinergic blood activity. a Acetylcholinesterase activity in whole blood, b serum butyrylcholinesterase, and c acetylcholinesterase activity in lymphocytes in healthy cows (n = 22), cows presenting subclinical endometritis (n = 17), and clinical endometritis (n = 22). Data are presented as means ± SD. Groups with different letters are statistically different (one-way ANOVA, Tukey test P < 0.05)
Oxidative markers. Myeloperoxidase (MPO) activity (a), lipid peroxidation evaluated by levels of thiobarbituric acid reactive substances (TBARS). b An antioxidant enzyme assessed by catalase activity (c) in healthy cows (n = 22), cows presenting subclinical endometritis (n = 17), and clinical endometritis (n = 22). Data are presented as means ± SD. Groups with different letters are statistically different (one-way ANOVA, Tukey test P < 0.05)
Bovine Endometritis and the Inflammatory Peripheral Cholinergic System

April 2020

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94 Reads

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12 Citations

Applied Biochemistry and Biotechnology

Endometritis is an inflammation of the endometrium associated with bacterial infection. The pathogenesis of endometritis in cows is still not completely understood. The combined analysis of the markers of inflammation and oxidative stress has contributed to a better understanding of disease mechanisms, but is still unexplored in uterine disorders. Moreover, research provides evidence about an important role of the vagus nerve in regulating the innate immune function through the cholinergic anti-inflammatory pathway in response to bacterial infections. This new pathway has demonstrated a critical role in controlling the inflammatory system. The aim of this study was to evaluate the activity of cholinesterase in total blood, lymphocytes, and serum of dairy cows with clinical and subclinical endometritis. Sixty-one Holstein cows, between 30 and 45 days in milk, were classified into 3 groups of animals: presenting clinical endometritis (n = 22), subclinical endometritis (n = 17), and healthy (n = 22). Mean leukocyte counts did not differ among groups, but the neutrophil number was significantly higher in cows with clinical endometritis than those in healthy animals. Also, serum concentration of interleukin-1beta (pg/mL) was significantly higher in cows with endometritis. The activity of acetylcholinesterase in blood and lymphocytes increased in both groups with endometritis. Animals with endometritis presented an increase in lipid peroxidation, but the antioxidant enzyme activity (catalase levels) was higher in endometritis groups than in normal cows. In conclusion, the inflammatory process of clinical and subclinical endometritis leads to systemic lipid peroxidation despite the compensatory increase of the antioxidant enzyme. These data also provide evidence of an important role of the cholinergic pathway in regulating dairy cows with clinical and subclinical endometritis.


Tamoxifen treatment adherence assessment by women with breast cancer

January 2020

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122 Reads

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4 Citations

Revista de Epidemiologia e Controle de Infecção

Justification and objectives: oral antineoplastic therapy has advantages compared to other therapies for the treatment of cancer, as it is administered at home, in a simple and fast way. However, this therapy increases patients’ responsibility for their treatment, and compliance is critical to its effectiveness. Few studies are evident regarding pharmacotherapeutic follow-up in oral antineoplastic therapy. In this context, this study seeks to assess adherence to tamoxifen treatment in women with breast cancer, before and after pharmacotherapeutic follow-up. Methods: this is a randomized, quantitative clinical study. Data collection was carried out for six months. Random randomization was divided into a control group and a follow-up group, with the follow-up subdivided into before and after follow-up. The follow-up group received individual pharmaceutical interventions monthly. Adherence was assessed by The Brief Medication Questionnaire, Brazilian version and drug-related problems as to necessity, effectiveness, and safety. Results: after pharmaceutical follow-p, a difference was observed between the follow-up group and the control group regarding physical activity (p=0.043), treatment adherence (p=0.006), reduction of side effects (p=0.003) and associated diseases (p=0.002). The most frequent drug-related problems were safety and adherence, for which 54 pharmaceutical interventions were performed. The side effects described by patients mainly affected the genital system and gastrointestinal tract. Conclusion: it was evident that pharmacotherapeutic follow-up effectively contributed to adherence to treatment with tamoxifen and the pharmaceutical interventions performed contributed to prevention and reduction of drug-related problems.



Figure 1: A-Area of rural properties, B-Reason for choosing rural, C-Factors for individuals' permanence in the field, and D-Origin of used water.
Figure 2: A-Actions taken by farmers in case of water scarcity, B-Actions seen as priority for water conservation.
The Analysis of Water Availability as an Important Factor for Farmers' Permanence in the Field: A Study in Southern Brazilian Countryside

October 2019

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43 Reads

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2 Citations

International Journal for Innovation Education and Research

Water availability in rural areas is essential to production activities and quality of life. The aim of the current study is to evaluate the key role played by water resources in rural properties as a factor for farmers' permanence in the field in Southern Brazil. The research followed a qualitative and quantitative approach, which encompassed the application of semi-structured questionnaires to family farmers living in Marmeleiro and Fontana Freda communities, in the rural area of Jaguari County, Rio Grande do Sul State, Brazil. Based on collected data, participants have shown knowledge about aspects such as water quality and availability, as well as about the preservation of this resource. Nevertheless, it was clear that water availability is a fundamental factor for farmers to remain in the field.


Esporulação in vitro e inoculação de Exserohilum turcicum em milho

September 2019

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86 Reads

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2 Citations

Summa Phytopathologica

RESUMO A helmintosporiose está entre as principais doenças da cultura do milho. Realizou-se dois ensaios com os objetivos de avaliar a esporulação do fungo diferentes meios de cultura, métodos de inoculação e concentrações de inóculo para Exserohilum turcicum. Para a esporulação em diferentes meios de cultura, testou-se seis diferentes substratos: batata sacarose ágar (BSA), extrato de folha de milho (FM), potato dextrose ágar (PDA), suco V8 ágar (V8), lactose caseína hidrolisada ágar (LCHA) e meio semi-seletivo De Rossi e Reis (DRR) submetidos a dois regimes luminosos, fotoperíodo de 12 e escuro contínuo. E no segundo ensaio avaliou-se dois métodos de inoculação: a aspersão e a deposição do inóoculo no cartucho das plântulas, sendo testadas as concentrações de 5x103, 10x103, 15x103 20x103, 25x103 conídios/mL, e para o segundo foram depositados 0,5 mL na concentração de 20x103 conídios/mL nos cartuchos. Para ambos os métodos a inoculação foi feita no estádio V4 (quarta folha expandida, apresentando colar, lígula e aurículas visíveis), e mantidos em câmara úmida por 24 horas na temperatura de 25 0C. Quinze dias após a inoculação, avaliou-se a severidade estimada e a área da lesão. O delineamento experimental foi inteiramente casualizado com quatro repetições e os dados obtidos foram submetidos à análise de variância e de regressão. O maior número de conídios.cm-2 foi obtido no meio DRR, independente do regime luminoso. O método de aspersão mostrou-se eficaz nas concentrações de 15x103, 20x103 e 25x103 conídios/mL


Figure 1 A. Levels of total proteins (g/dL) Figure 1 B. Carbonylated protein (nmol carbonyl/mg)
Figure 2 A. Levels of lipid peroxidation (nmol MDA/Hb) Figure 2 B. Uric acid (mg/dl)
Figure 3 A. Activity Reduced Glutathione Figure 3 B. Levels Ascorbic Acid
Antioxidant effect of Physalis angulata fruit on cells exposed to 2,4- dichlorophenoxyacetic acid

August 2019

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65 Reads

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1 Citation

International Journal for Innovation Education and Research

Several in vitro studies have described the erythrocyte toxicity mechanism response to the 2,4-dichlorophenoxyacetic acid (2,4-D) and its metabolites, strongly related to oxidative stress. Compounds such as ascorbic acid and flavonoids, present in various fructiferous plants like Physalis angulata L.- Solanaceae, are exogenous sources of antioxidants, which have aroused interest because of its beneficial biological effects to health by capturing oxygen reactive species. Here, was investigated the cytotoxic effects of the 2,4-D in human erythrocytes exposed to this herbicide and treated with the juice of P. angulata fruits. Analyzing the oxidant and antioxidant mechanisms in these cells in vitro, was demonstrated that the damage mechanism by the Physalis juice occurred at the level of cellular proteins and membranes, altering levels of endogenous antioxidants components such as reduced glutathione and uric acid, and exogenous like vitamin C. Our results indicate new insights into the mechanism of human erythrocytes response exposed to the P. angulata juice, providing wayforward to future studies of cytotoxicity.


Qualidade de vida e saúde em uma perspectiva interdisciplinar – volume 6

August 2019

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369 Reads

O conceito e a aplicabilidade de qualidade de vida têm evoluído no cenário mundial a partir da década de sessenta, através de diferentes instrumentos de medida. Destaca-se na área das ciências o maior impulso, que se deu na década de noventa, quando a qualidade de vida relacionada à saúde ganhou mais visibilidade, a começar pelos grandes estudos de especialistas referenciados pela Organização Mundial da Saúde. Frente a isso, a incorporação de parâmetros de avaliação da qualidade de vida, considerada um indicador multidimensional num marco social e cultural determinado, passou a constituir importante elemento para a tomada de decisão e avaliação do setor. Nesta coleção, intitulada “Qualidade de vida e saúde em uma perspectiva interdisciplinar”, são discutidas temáticas que abordam a singularidade do indivíduo e se estendem até as políticas públicas em diferentes contextos de saúde-doença e suas interações. É sob essa perspectiva que os capítulos aqui expostos descrevem o percurso histórico do entendimento da saúde da população brasileira em diferentes condições de doenças e agravos que abarcam desde processos fisiológicos, como o envelhecimento, até condições de enfermidades de interesse público em sua interface com a qualidade de vida. Essas obras são continuação e ampliação das discussões iniciadas na coleção anterior “Qualidade de vida e condições de saúde de diversas populações”, que fora idealizada pelo Prof. Dr. Ramon Missias-Moreira. O trabalho minucioso e delicado, refletido na maneira como os organizadores e autores descrevem suas experiências em grupos e em pesquisas, favorece uma leitura prazerosa que incita a reflexão acerca da abordagem multiprofissional, interdisciplinar e do enfoque operacional para o campo de suas práticas.


Fig. 1. Effects of inspiratory threshold loading on TBARS. Data were expressed as mean and standard deviation. Inspiratory threshold loading reduced baseline TBARS in obese and normal-weight subjects. Measured values were not significantly changed in the control protocol. †p < 0.05 baseline vs. end
Fig. 2. Effects of inspiratory threshold loading on TBARS related to gender. Data were expressed as mean and standard deviation. Inspiratory threshold loading reduced TBARS similarly in men and women. Men did have greater TBARS at baseline. *p < 0.05 woman vs. men. †p < 0.05 baseline vs. end
Fig. 3. Effects of inspiratory threshold loading on protein carbonyl. Data were expressed as mean and standard deviation. Protein carbonyl was not significantly changed by inspiratory threshold loading and control protocol
Fig. 4. Effects of inspiratory threshold loading on reduced glutathione. Data were expressed as mean and standard deviation. Inspiratory threshold loading did not change reduced glutathione. Control protocol induced an increase in reduced glutathione in obese and normal-weight subjects. †p < 0.05 baseline vs. end
Fig. 5. Effects of control protocol on reduced glutathione related to gender. Data were expressed as mean and standard deviation. Control protocol induced an increase in reduced glutathione similar in men and women. †p < 0.05 baseline vs. end
Inspiratory threshold loading reduces lipoperoxidation in obese and normal-weight subjects

July 2019

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43 Reads

Physiology International

Obesity is related to increased oxidative stress. Although low-intensity physical exercise reduces oxidative stress, obese subjects may show exercise intolerance. For these subjects, inspiratory threshold loading could be an alternative tool to reduce oxidative stress. We investigated the effects of inspiratory threshold loading on biomarkers of oxidative stress in obese and normal-weight subjects. Twenty obese (31.4 ± 6 years old, 10 men and 10 women, 37.5 ± 4.7 kg/m2) and 20 normal-weight (29.4 ± 8 years old, 10 men and 10 women, 23.2 ± 1.5 kg/m2) subjects matched for age and gender participated in the study. Maximal inspiratory pressure (MIP) was assessed by a pressure transducer. Blood sampling was performed before and after loading and control protocols to assess thiobarbituric acid reactive substances (TBARS), protein carbonylation, and reduced glutathione. Inspiratory threshold loading was performed at 60% MIP and maintained until task failure. The 30-min control protocol was performed at 0 cmH2O. Our results demonstrated that inspiratory threshold loading reduced TBARS across time in obese (6.21 ± 2.03 to 4.91 ± 2.14 nmol MDA/ml) and normal-weight subjects (5.60 ± 3.58 to 4.69 ± 2.80 nmol MDA/ml; p = 0.007), but no change was observed in protein carbonyls and glutathione in both groups. The control protocol showed no significant changes in TBARS and protein carbonyls. However, reduced glutathione was increased across time in both groups (obese: from 0.50 ± 0.37 to 0.56 ± 0.35 μmol GSH/ml; normal-weight: from 0.61 ± 0.11 to 0.81 ± 0.23 μmol GSH/ml; p = 0.002). These findings suggest that inspiratory threshold loading could be potentially used as an alternative tool to reduce oxidative stress in both normal-weight and obese individuals.


Citations (4)


... O uso de terapia antineoplásica oral apresenta vantagens como a de não necessitar de acesso venoso, sem comprometer sua rotina habitual com administração de forma simples e rápida, essa terapia aumenta a responsabilidade do paciente em relação ao tratamento e a adesão, o que torna-se fundamental para sua eficácia. O farmacêutico por sua posição estratégica, entre o médico e o paciente, pode contribuir para a adesão e bem estar do paciente, por detectar, prevenir e resolver PRMs e outras condições de saúde do paciente (Rangel et al., 2020). ...

Reference:

CUIDADO FARMACÊUTICO EM TERAPIAS ONCOLÓGICAS: UMA REVISÃO INTEGRATIVA DAS ESTRATÉGIAS E IMPACTOS
Tamoxifen treatment adherence assessment by women with breast cancer

Revista de Epidemiologia e Controle de Infecção

... Sugere-se que a infusão possa ser utilizada como adjuvante de suplementos vitamínicos recomendados durante a gestação (RUBIN et al., 2020 ...

REDOX ALTERATIONS IN PREGNANT WOMEN: ANTIOXIDANT EFFECT OF LEMONGRASS (CYMBOPOGON CITRATUS (DC.) STAPF) ALTERAÇÕES REDOX EM GESTANTES: EFEITO ANTIOXIDANTE DO CAPIM-LIMÃO (CYMBOPOGON CITRATUS (DC.) STAPF)
  • Citing Article
  • January 2020

Brazilian Journal of Development

... The implications of this practice are part of climate smart agriculture and are related to the promotion and strategy of maintaining vegetables that can increase agricultural income (Arpitha et al., 2024). In addition, if farmers can master efficient water use technologies, it will allow for the sustainability of farming, such as the experience of agricultural sustainability in rural Southern Brazil (Perlin et al., 2019). ...

The Analysis of Water Availability as an Important Factor for Farmers' Permanence in the Field: A Study in Southern Brazilian Countryside

International Journal for Innovation Education and Research

... Автори (Hullahalli et al., 2021) зазначають, що абсцес -це бактеріальна інфекція, яка виникає внаслідок потрапляння у пошкоджені тканини бактерій. Найчастіше за розвитку абсцесів ізолюють такі збудники: Esherichia coli, Staphylococcus epidermidis, Staphylococcus aureus, Pseudomonas aeruginosa (Siqueira et al., 2020). Це свідчить, що інфекційні процеси у тварин у наш час є поширеною проблемою, оскільки мікроорганізми, які викликають дану проблему, теж розповсюджені. ...

Bovine Endometritis and the Inflammatory Peripheral Cholinergic System

Applied Biochemistry and Biotechnology