69 results on '"Hoffmann JF"'
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2. Diagnostisches und therapeutisches Vorgehen in der chronischen Phase nach kraniozervikalem Beschleunigungstrauma (cKZBT, sog. Schleudertrauma) (ohne Commotio cerebri/mild traumatic brain injury)
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Stöckli, HR, primary, Ettlin, T, additional, Gysi, F, additional, Knüsel, O, additional, Marelli, R, additional, Mayer, CU, additional, Soltermann, B, additional, Anoni, JM, additional, Dubs, L, additional, Hoffmann, JF, additional, Müller, A, additional, Radanov, B, additional, Walz, F, additional, and Zimmermann, H, additional
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- 2005
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3. Ovalbumin messenger ribonucleic acid accumulation in the chick oviduct during secondary stimulation: influence of combinations of steroid hormones and circannual rhythms
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Coulson Pb, Hoffmann Jf, Van Eys-Fuchs Dc, and Seaver Ss
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medicine.medical_specialty ,Ovalbumin ,medicine.drug_class ,Period (gene) ,Estrogen receptor ,Stimulation ,Oviducts ,Biology ,Biochemistry ,Internal medicine ,medicine ,Animals ,Testosterone ,RNA, Messenger ,Progesterone ,Nucleic Acid Hybridization ,Estrogens ,Hormones ,Circadian Rhythm ,Endocrinology ,Estrogen ,biology.protein ,Oviduct ,Female ,Chickens ,Hormone - Abstract
We have analyzed by hybridization the accumulation of ovalbumin mRNA after the administration of estrogen, progesterone, these two hormones together, or each hormone with testosterone to "withdrawn" chicks (chicks previously stimulated with estrogen but then withdrawn from the hormone). We were interested in determining if the time lag between hormone treatment and a significant increase in ovalbumin mRNA levels could be shortened. After every hormonal treatment we found that there was a 1.5-2.5-h lag period before a significant increase in ovalbumin mRNA levels. This lag period was not simply due to the slow delivery of the hormone to the oviduct. Nuclear estrogen receptor levels had plateaued by 1 h. Rather unexpectedly, the rate of ovalbumin mRNA accumulation after this lag period seemed to depend on the time of the year. Ovalbumin mRNA accumulated faster during the summer and early fall than during the winter and early spring. These seasonal differences were also observed in ovalbumin mRNA levels 24 h after hormone treatment. Such a circannual rhythm may help explain reported differences in the rate of ovalbumin mRNA accumulation during secondary stimulation.
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- 1980
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4. Comprehensive assessment of clean-up strategies for optimizing an analytical multi-method to determine pesticides and mycotoxins in Brazilian medicinal herbs using QuEChERS-LC-TQ-MS/MS.
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Zorzella Fontana ME, Caiel da Silva R, Duarte Dos Santos I, Neu JP, Wouters RD, Babinski PJ, Hoffmann JF, Rossi RC, Essi L, and Pizzutti IR
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- Brazil, Chromatography, Liquid methods, Limit of Detection, Pesticide Residues analysis, Pesticides analysis, Reproducibility of Results, Tandem Mass Spectrometry methods, Mycotoxins analysis, Mycotoxins isolation & purification, Plants, Medicinal chemistry
- Abstract
The use of medicinal herbs has increased significantly. However, the presence of pesticide residues and mycotoxins in medicinal herbs has generated constant discussion and concern among regulatory agencies. Developing and validating an analytical method for determining pesticides and mycotoxins in medicinal plants is challenging due to the naturally occurring substances in these plants. The purpose of this work was to develop and to optimize a sensitive, accurate, precise, effective QuEChERS method for simultaneous determination of over 160 pesticide and mycotoxin residues in complex medicinal plant matrices using LC-TQ-MS/MS. A comprehensive comparison of clean-up procedures and other parameters was conducted to achieve this goal. The validation procedure was performed according to SANTE 11312/2021. More polar analytes, such as acephate, methamidophos and omethoate, presented a higher negative matrix effect in both Melissa officinalis L. and Malva sylvestris L. However, other molecules, such as spirodiclofen, showed a 24% signal enhancement in M. officinalis and a 46% signal suppression in M. sylvestris , indicating that a representative matrix-matched calibration would lead to inaccurate quantification of the analyte. Accuracy and precision were satisfactory according to SANTE 11312/2021 for 157 pesticide residues and mycotoxins in M. officinalis and for 152 molecules in M. sylvestris . LOQs at 10 µg kg
-1 were achieved for 117 pesticides in M. officinalis and 99 pesticides in M. sylvestris . Among the mycotoxins, all four aflatoxins (B1, B2, G1 and G2) presented LOQs of 5 µg kg-1 , and ochratoxin A had an LOQ of 10 µg kg-1 in M. officinalis . The same LOQ values were shown for these mycotoxins in M. sylvestris , except for aflatoxin B2 and ochratoxin A, which had LOQs of 20 µg kg-1 . Moreover, in Southern Brazil, there has been no previous study on mycotoxin and pesticide contamination in medicinal herbs. Therefore, the application of this method was assessed through the analysis of forty-two real samples. Imidacloprid was found in M. officinalis , and methyl pirimiphos was found in M. sylvestris . The proposed method not only serves as a helpful tool for routine monitoring but also offers a basis for further research on risk assessment and control in food safety.- Published
- 2024
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5. A multimodal approach connecting cortical and behavioural responses to the visual continuity illusion.
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Bailey MCD, du Hoffmann JF, and Dalley JW
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In their recently published study, Gil, Valente and Shemesh combined behaviour, functional magnetic resonance imaging, electroencephalography and causal interventions to establish and validate a cortical processing substrate underlying the transition from static to dynamic visual states in the rat. Their research highlights the superior colliculus as the primary mediator of visual temporal discrimination by showing a direct correlation between behavioural and cortically derived flicker fusion frequency thresholds. This work provides the first empirical evidence addressing the previously established disparity between behavioural and cortically derived flicker fusion frequency thresholds. It demonstrates how important convergent multimodal approaches are to mapping and validating previously disputed cortical pathways. Here, we discuss and evaluate their work, suggesting possible future applications in the field of behavioural neuroscience., Competing Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article., (© The Author(s) 2024.)
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- 2024
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6. Probiotic Yogurt Supplemented with Lactococcus lactis R7 and Red Guava Extract: Bioaccessibility of Phenolic Compounds and Influence in Antioxidant Activity and Action of Alpha-amylase and Alpha-glucosidase Enzymes.
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Santos Pereira ED, de Oliveira Raphaelli C, Massaut KB, Camargo TM, Radünz M, Hoffmann JF, Vizzotto M, Pieniz S, and Fiorentini ÂM
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- Antioxidants pharmacology, alpha-Amylases, alpha-Glucosidases, Yogurt, Dietary Supplements, Plant Extracts pharmacology, Plant Extracts chemistry, Psidium chemistry, Lactococcus lactis, Probiotics
- Abstract
The industry has increasingly explored the development of foods with functional properties, where supplementation with probiotics and bioactive compounds has gained prominence. In this context, the study aimed to evaluate the influence of in vitro biological digestion on the content of phenolic compounds, antioxidant activity, and inhibition of α-amylase and α-glucosidase activities of probiotic yogurt supplemented with the lactic acid bacteria Lactococcus lactis R7 and red guava extract (Psidium cattleianum). A yogurt containing L. lactis R7 (0.1%) and red guava extract (4%) was characterized for the content of phenolic compounds, antioxidant activity, and potential for inhibition of digestive enzymes after a simulated in vitro digestion process. After digestion, the caffeic and hydroxybenzoic acids remained, and sinapic acid only in the last digestive phase. Antioxidant activity decreased during digestion by 28.93, 53.60, and 27.97% for DPPH, nitric oxide and hydroxyl radicals, respectively, and the inhibition of the α-amylase enzyme decreased only 4.01% after the digestion process. α-glucosidase was more efficient in intestinal digestion, demonstrating an increase of almost 50% in probiotic yogurt with red guava extract before digestion. Possibly, the phenolics change their conformation during digestion, generating new compounds, reducing antioxidant activity, and increasing the inhibitory activity of α-glucosidase digestive enzymes. It was concluded that the probiotic yogurt formulation supplemented with red guava extract could interfere with the concentration of phenolic compounds and the formation of new compounds, suggesting a positive and effective inhibition of the digestive enzymes, even after the digestive process., (© 2024. The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.)
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- 2024
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7. Lime and orange essential oils and d-limonene as a potential COVID-19 inhibitor: Computational, in chemico , and cytotoxicity analysis.
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Corrêa ANR, Weimer P, Rossi RC, Hoffmann JF, Koester LS, Suyenaga ES, and Ferreira CD
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The COVID-19 pandemic has substantially impacted the world health systems, causing public health concerns, and the search for new compounds with antiviral activity is of extreme interest. Natural molecules with bioactive potential are a trend, with essential oils (Eos) being the focus of recent studies. Thus, this study evaluates in chemico the d-limonene inhibitory activities in the viral genome of SARS-CoV-2 and analyzes the cytotoxic potential and safety profile of d-limonene and lime and orange EOs with a high content of d-limonene. The EOs were extracted and characterized, and the in chemico computational analysis for the determination as a potential anti-SARS-CoV-2 was performed with d-limonene, the major compound in EOs. The cytotoxicity analysis of EOs and d-limonene was carried out with MRC-5 and HaCaT, and the preliminary safety profile was also evaluated by the HET-CAM assay. d-limonene was suggested as a promising compound for anti-SARS-CoV-2 research, since the molecule does not provide mutagenic and cytotoxic fragments, and does not have irritating potential when diluted, in addition to having favorable pharmacokinetic characteristics, through in chemico analysis. Collectively, the results reveal the antiviral potential of lime and orange EOs, as well as their major compound. In this sense, further studies should be conducted to understand the antiviral mechanisms., Competing Interests: The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper., (© 2022 Elsevier Ltd. All rights reserved.)
- Published
- 2023
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8. Antimicrobial and cytotoxic activity to human colon adenocarcinoma cell lines (HT-29) potential of olive oil extraction residue.
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Ferreira do Amaral V, Santos ACMD, Moura JGL, Castilhos J, Gemelli T, Hoffmann JF, Ziegler V, and Ferreira CD
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- Anti-Bacterial Agents metabolism, Cell Line, Humans, Olive Oil, Plant Extracts chemistry, Adenocarcinoma drug therapy, Anti-Infective Agents metabolism, Colonic Neoplasms drug therapy, Olea chemistry
- Abstract
In the Olive drupe ( Olea europaea L.) oil extraction process, 80% of the volume generated is waste (bagasse). Advancing the expansion of the olive oil market, it is necessary to develop alternatives that, in addition to adding value to industrial waste, also reduce possible environmental damage. Our study aimed to understand the antimicrobial and Cytotoxic activity potential of the residues from the extraction of olive oil from the blend of the varieties Arbequina and Arbosana. The extract shows cytotoxic activity, inhibiting about 75% of cancer cells in the human colon at a concentration of 0.15 mg of Gallic Acid equivalent (GAE)/mL. The effectiveness of the extract against microorganisms often associated with foodborne diseases and food decomposition has also been discovered, without compromising the microorganisms responsible for fermentation. Thus, this study provides future perspectives for the use of active ingredients extracted from the residue from the extraction of olive oil.
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- 2022
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9. Multiresistant bacteria isolated from domestic and wild animals with skin lesions were susceptible to native plants from Southern Brazil.
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Giordani C, Waller SB, Guterres KA, da Silva CC, Lobo RR, Hoffmann JF, Perera SC, Chaves FC, Ladeira SRL, Sallis ESV, Vargas GD, and Cleff MB
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- Animals, Anti-Bacterial Agents chemistry, Anti-Bacterial Agents pharmacology, Brazil, Escherichia coli, Gram-Negative Bacteria, Gram-Positive Bacteria, Microbial Sensitivity Tests, Animals, Wild, Bacteria
- Abstract
We evaluated the chemical composition, toxicity, and antibacterial activity of Schinus terebinthifolia (SCH), Eugenia uniflora (EUG), Persicaria hydropiperoides (PER), Equisetum hyemale (EQU), Solidago chilensis (SOL), and Baccharis trimera (BRA). These plants were tested (7.5-0.01 mg/mL) against Gram-positive (G+; n = 32) and Gram-negative (G-; n = 26) isolates from animals (M07-A9, CLSI). Antibiogram (disk diffusion), chromatographic analysis (UPLC), and toxicity assay (HET-CAM) were also performed. A high incidence of resistance was noted, in which 18.4% (07/38) of G+ ( Staphylococcus intermedius/Enterococcus faecium ) and 17.7% (06/34) of G- ( Pseudomonas aeruginosa/Escherichia coli/Proteus mirabilis ) were multidrug-resistant. All bacteria were sensitive (MIC
50 ) to SCH (both 3.75 mg/mL), EUG (3.75 mg/mL and 7.5 mg/mL, respectively) and PER (both 7.5 mg/mL). SCH/EUG/PER highlighted as antibacterial, probably due to the major compounds (ethyl gallate, quinic acid, quercetin). These extracts showed normal embryonic development (SCH/EUG: 7.5-0.94 mg/mL). These findings highlighted the promising use of native plants for therapeutic purposes.- Published
- 2022
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10. Chemical, antioxidant and cytotoxic profile of hydroalcoholic extracts of plants from Southern Brazil and their activity against pathogenic fungi isolated from dogs and cats with sensitivity and resistance to conventional antifungals.
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Giordani C, Waller SB, Madrid IM, Guterres KA, de Matos CB, Hoffmann JF, de Castro LL, Chaves FC, de Faria RO, and Cleff MB
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- Animals, Antifungal Agents chemistry, Antioxidants pharmacology, Brazil, Cats, Dogs, Microbial Sensitivity Tests, Plant Extracts chemistry, Cat Diseases, Dog Diseases
- Abstract
We aimed to evaluate the chemical, antioxidant, cytotoxic, and antifungal activities of hydroalcoholic extracts of native plants from Southern Brazil: Schinus terebinthifolia (SCH) , Persicaria hydropiperoides (PER) , Eugenia uniflora (EUG) and Equisetum hyemale (EQU). Ethyl gallate, quercetin, and quinic acid were prevalent compounds identified by LC-MS. For total phenolic/flavonoid contents and the antioxidant potential against ABTS/DPPH radicals, the ascending order was EQU < PER < EUG < SCH. All extracts were low cytotoxic and kept a high Vero cell viability (>75%) at concentrations up to 12.5 mg/mL (MTT assay). By M38-A2/M27-A3 (CLSI) against 68 clinical isolates of animals and strains of Malassezia pachydermatis , Sporothrix brasiliensis , Microsporum canis, Microsporum gypseum and Trichophyton mentagrophytes , all extracts (MIC/MFC ≤3.13-100 mg/mL) were active, except EUG. SCH inhibited and killed S. brasiliensis (MIC/MFC
50/90 3.12-12.5 mg/mL) and dermatophytes (MIC/MFC 6.25-25 mg/mL) resistant to ketoconazole and itraconazole. These findings support the promising use of the selected plant extracts as antifungal agents.- Published
- 2022
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11. Jabuticaba [ Plinia peruviana (Poir.) Govaerts]: a Brazilian fruit with a promising application against itraconazole-susceptible and -resistant Sporothrix brasiliensis .
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Waller SB, Peter CM, Hoffmann JF, Cleff MB, Faria de RO, and Zani JL
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- Animals, Antifungal Agents pharmacology, Cats, Dogs, Fruit, Microbial Sensitivity Tests, Itraconazole pharmacology, Sporothrix
- Abstract
Hydroalcoholic extract from Jabuticaba peels was evaluated for the chemical profile, antioxidant potential, cytotoxicity, and anti- Sporothrix brasiliensis activities against both dimorphic phases. Higher phenolic content (14.91 ± 0.97) compared to flavonoid (2.05 ± 1.00) associated with the ellagic acid (1.93 ± 0.03; LC-MS), and a good scavenging ability against ABST and DPPH radicals was noted. On MDBK cells, elevated cell viability (>90%) was demonstrated between 0.39 and 0.097 mg/ml (MTT assay). Mycelial (CLSI M38-A2) and yeast (CLSI M27-A3) phases of 18 isolates of Sporothrix brasiliensis from cats ( n = 8), dogs ( n = 8) and humans ( n = 2) were used. They were identified itraconazole-susceptible and itraconazole-resistant isolates in both phases, which were all inhibited (MIC of ≤1.56-6.25 mg/ml for both phases) and killed (MFC of ≤1.56-12.5 mg/ml for mycelial; ≤1.56-50 mg/ml for yeast) by Jabuticaba. For the first time, these findings highlighted the potential usefulness of hydroalcoholic extract from Jabuticaba peel as a promising antifungal against sporotrichosis.
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- 2021
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12. Nanoscale structure and dynamics of thermoresponsive single-chain nanoparticles investigated by EPR spectroscopy.
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Roos AH, Hoffmann JF, Binder WH, and Hinderberger D
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We characterize temperature-dependent macroscopic and nanoscopic phase transitions and nanoscopic pre-transitions of water-soluble single chain nanoparticles (SCNPs). The studied SCNPs are based on polymers displaying lower-critical solution temperature (LCST) behavior and show nanoscale compartmentation. SCNPs are amenable to continuous wave electron paramagnetic resonance (CW EPR) spectroscopy to study how amphiphilic, non-covalently added nitroxide spin probes or covalently attached spin labels sample their environment concerning nanoscale structures (polarity, hydrophilicity/-phobicity) and dynamics. These SCNPs are formed through single-chain collapse and have been shown to have nanosized compartments that are rigidified during the crosslinking process. We analyze the temperature-dependent phase transitions of spin-labeled SCNPs by rigorous spectral simulations of a series of multicomponent EPR-spectra that derive from the nanoinhomogeneities (1) that are due to the single-chain compartmentation in SCNPs and (2) the transformation upon temperature change due to the LCST behavior. These transitions of the SCNPs and their respective polymer precursors can be monitored and understood on the nanoscale by following EPR-spectroscopic parameters like hyperfine couplings that depend on the surrounding solvent molecules or Heisenberg spin exchange between small molecule spin probes or covalently attached spin labels in the nanocompartments. In particular, for one SCNP, we find an interesting behavior that we ascribe to the properties of the nanosized inner core with continuous effects before and jump-like changes after the macroscopic thermal collapse, indicating highly efficient desolvation and compaction upon an increase in temperature and aggregation of individual nanoparticles above the collapse temperature.
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- 2021
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13. Cerebrospinal fluid findings in patients with psychotic symptoms-a retrospective analysis.
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Rattay TW, Martin P, Vittore D, Hengel H, Cebi I, Tünnerhoff J, Stefanou MI, Hoffmann JF, von der Ehe K, Klaus J, Vonderschmitt J, Herrmann ML, Bombach P, Al Barazi H, Zeltner L, Richter J, Hesse K, Eckstein KN, Klingberg S, and Wildgruber D
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- Adolescent, Adult, Age of Onset, Aged, Autoimmune Diseases of the Nervous System cerebrospinal fluid, Autoimmune Diseases of the Nervous System psychology, Biomarkers cerebrospinal fluid, COVID-19 psychology, Cerebrospinal Fluid Proteins analysis, Child, Child, Preschool, Humans, Middle Aged, Psychotic Disorders etiology, Psychotic Disorders psychology, Retrospective Studies, Schizophrenia cerebrospinal fluid, Young Adult, Psychotic Disorders cerebrospinal fluid
- Abstract
In current international classification systems (ICD-10, DSM5), the diagnostic criteria for psychotic disorders (e.g. schizophrenia and schizoaffective disorder) are based on symptomatic descriptions since no unambiguous biomarkers are known to date. However, when underlying causes of psychotic symptoms, like inflammation, ischemia, or tumor affecting the neural tissue can be identified, a different classification is used ("psychotic disorder with delusions due to known physiological condition" (ICD-10: F06.2) or psychosis caused by medical factors (DSM5)). While CSF analysis still is considered optional in current diagnostic guidelines for psychotic disorders, CSF biomarkers could help to identify known physiological conditions. In this retrospective, partly descriptive analysis of 144 patients with psychotic symptoms and available CSF data, we analyzed CSF examinations' significance to differentiate patients with specific etiological factors (F06.2) from patients with schizophrenia, schizotypal, delusional, and other non-mood psychotic disorders (F2). In 40.3% of all patients, at least one CSF parameter was out of the reference range. Abnormal CSF-findings were found significantly more often in patients diagnosed with F06.2 (88.2%) as compared to patients diagnosed with F2 (23.8%, p < 0.00001). A total of 17 cases were identified as probably caused by specific etiological factors (F06.2), of which ten cases fulfilled the criteria for a probable autoimmune psychosis linked to the following autoantibodies: amphiphysin, CASPR2, CV2, LGl1, NMDA, zic4, and titin. Two cases presented with anti-thyroid tissue autoantibodies. In four cases, further probable causal factors were identified: COVID-19, a frontal intracranial tumor, multiple sclerosis (n = 2), and neurosyphilis. Twenty-one cases remained with "no reliable diagnostic classification". Age at onset of psychotic symptoms differed between patients diagnosed with F2 and F06.2 (p = 0.014), with the latter group being older (median: 44 vs. 28 years). Various CSF parameters were analyzed in an exploratory analysis, identifying pleocytosis and oligoclonal bands (OCBs) as discriminators (F06.2 vs. F2) with a high specificity of > 96% each. No group differences were found for gender, characteristics of psychotic symptoms, substance dependency, or family history. This study emphasizes the great importance of a detailed diagnostic workup in diagnosing psychotic disorders, including CSF analysis, to detect possible underlying pathologies and improve treatment decisions.
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- 2021
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14. Fluorescent and Water Dispersible Single-Chain Nanoparticles: Core-Shell Structured Compartmentation.
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Hoffmann JF, Roos AH, Schmitt FJ, Hinderberger D, and Binder WH
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Single-chain nanoparticles (SCNPs) are highly versatile structures resembling proteins, able to function as catalysts or biomedical delivery systems. Based on their synthesis by single-chain collapse into nanoparticular systems, their internal structure is complex, resulting in nanosized domains preformed during the crosslinking process. In this study we present proof of such nanocompartments within SCNPs via a combination of electron paramagnetic resonance (EPR) and fluorescence spectroscopy. A novel strategy to encapsulate labels within these water dispersible SCNPs with hydrodynamic radii of ≈5 nm is presented, based on amphiphilic polymers with additional covalently bound labels, attached via the copper catalyzed azide/alkyne "click" reaction (CuAAC). A detailed profile of the interior of the SCNPs and the labels' microenvironment was obtained via electron paramagnetic resonance (EPR) experiments, followed by an assessment of their photophysical properties., (© 2020 The Authors. Angewandte Chemie International Edition published by Wiley-VCH GmbH.)
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- 2021
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15. Encapsulation of broccoli extract by electrospraying: Influence of in vitro simulated digestion on phenolic and glucosinolate contents, and on antioxidant and antihyperglycemic activities.
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Radünz M, Mota Camargo T, Dos Santos Hackbart HC, Blank JP, Hoffmann JF, Moro Stefanello F, and da Rosa Zavareze E
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- Antioxidants chemistry, Antioxidants isolation & purification, Antioxidants pharmacology, Biomimetics, Brassica metabolism, Capsules, Hyperglycemia, Hypoglycemic Agents chemistry, Hypoglycemic Agents isolation & purification, Hypoglycemic Agents pharmacology, Plant Extracts pharmacology, Brassica chemistry, Digestion, Electricity, Glucosinolates analysis, Phenols analysis, Plant Extracts chemistry, Plant Extracts isolation & purification
- Abstract
Compounds present in broccoli are vulnerable to the digestive process, and encapsulation becomes an alternative for their preservation. The encapsulation of broccoli extract, by electrospraying, was performed with the purpose of evaluating the effect of in vitro simulated digestion on individual compounds and antioxidant and antihyperglycemic potentials. Each digestion fraction was evaluated by chromatography, as well as for antioxidant activity and antihyperglycemic potential. The encapsulated extract showed high encapsulation efficiency and spherical morphology. Losses in the levels of phenolic compounds and glucosinolates were found in both extracts, considering the fractions submitted to digestion. The digestion promoted an increase in the inhibition of hydroxyl, nitric oxide and α-amylase, as well as a decrease in the inhibition of α-glucosidase in both extracts, when compared to undigested fractions. Thus, the digestion affects the compounds content in both encapsulated and unencapsulated extracts. However, they still promote the control of oxidative processes and hyperglycemia., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2021
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16. Postharvest UV-C irradiation for fungal control and reduction of mycotoxins in brown, black, and red rice during long-term storage.
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Ferreira CD, Lang GH, Lindemann IDS, Timm NDS, Hoffmann JF, Ziegler V, and de Oliveira M
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- Cell Wall chemistry, Cell Wall radiation effects, Color, Cooking, Food Microbiology, Fungi, Oryza chemistry, Phenols analysis, Time Factors, Ultraviolet Rays, Food Preservation methods, Food Storage, Mycotoxins analysis, Oryza microbiology, Oryza radiation effects
- Abstract
The formation of fungal colonies, mycotoxins, phenolic compounds, cooking quality and color properties were evaluated in freshly-harvested brown, black, and red rice grains and then subjected to ultraviolet radiation (UV-C) for 1 and 3 h. Assessments were made after 6 months of storage. The exposure of black and red rice at 1 h of UV-C was enough to decrease the presence of fungal colonies by 22% and 79%, respectively, without any changes in cooking and coloring properties. In brown rice, only 3 h of UV-C irradiation was able to reduce the formation of fungal colonies. The release of phenolic compounds associated with cell wall was observed only in black and red rice subjected to UV-C radiation. The levels of mycotoxins gradually decreased with the increase in the time of exposure to UV-C radiation, demonstrating UV-C irradiation to be an effective method in fungal control and reduction of mycotoxins in stored rice., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2021
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17. Extraction and characterization of phytochemical compounds from araçazeiro (Psidium cattleianum) leaf: Putative antioxidant and antimicrobial properties.
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Zandoná GP, Bagatini L, Woloszyn N, de Souza Cardoso J, Hoffmann JF, Moroni LS, Stefanello FM, Junges A, and Rombaldi CV
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- Anti-Bacterial Agents pharmacology, Antioxidants pharmacology, Gram-Negative Bacteria, Gram-Positive Bacteria, Phytochemicals pharmacology, Plant Extracts pharmacology, Plant Leaves, Anti-Infective Agents pharmacology, Psidium
- Abstract
Underexplored species have phytochemical potential for pharmacological and nutraceutical applications. The fruits of such species, including aracá (Psidium cattleianum Sabine), are rich in specialized metabolites with putative antioxidant and antimicrobial activity; therefore, the leaves of these species are also a potential source of bioactive compounds. In this study, araçazeiro leaves were extracted using an aqueous infusion (Al) and a pressurized liquid extraction system with water (PLE-W), ethanol (PLE-E), and 1:1 water:ethanol ratio combination (PLE-W:E). PLE-W:E yielded a greater diversity of extracted compounds. Nonetheless, all extracts showed inhibitory activity against pathogenic Gram-positive and Gram-negative bacteria and antioxidant activity in the in vitro thiobarbituric acid reactive substances (TBARS) and reactive oxygen species (ROS) assays with rat brain and yeast model systems. Thus, araçazeiro leaves can be exploited as a promising source of bioactive compounds., (Copyright © 2020 Elsevier Ltd. All rights reserved.)
- Published
- 2020
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18. Hypolipidemic and anti-inflammatory properties of phenolic rich Butia odorata fruit extract: potential involvement of paraoxonase activity.
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Ramos VP, da Silva PG, Oliveira PS, Bona NP, Soares MSP, Cardoso JS, Hoffmann JF, Chaves FC, Schneider A, Spanevello RM, Lencina CL, Stefanello FM, and Tavares RG
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- Animals, Anti-Inflammatory Agents chemistry, Anti-Inflammatory Agents pharmacology, C-Reactive Protein metabolism, Cholesterol, HDL blood, Chromatography, Liquid, Fruit chemistry, Humans, Hypolipidemic Agents chemistry, Hypolipidemic Agents pharmacology, Male, Phenols chemistry, Plant Extracts chemistry, Plant Extracts pharmacology, Rats, Tandem Mass Spectrometry, Triglycerides blood, Arecaceae chemistry, Aryldialkylphosphatase genetics, Liver drug effects, Oxidative Stress drug effects
- Abstract
Aim: This study investigated the effects of polar Butia odorata fruit extract on metabolic, inflammatory, and oxidative stress parameters in rats submitted to a hyperlipidaemia condition induced by tyloxapol. Methods: Animals were divided into 3 groups: saline, saline plus tyloxapol, and B. odorata extract plus tyloxapol. Animals were treated for 15 days with a saline solution or B. odorata fruit extract and after hyperlipidaemia was induced by tyloxapol. Results: Treatment with B. odorata extract reduced serum triglyceride, total cholesterol, C-reactive protein, and adenosine deaminase and butyrylcholinesterase activities when compared to the tyloxapol group. HDL-cholesterol and paraoxonase 1 activity were higher in B. odorata extract treated animals when compared to tyloxapol-treated animals. No differences were observed in hepatic oxidative stress parameters. Phenolic compounds present in B. odorata fruit extract were identified and quantified by LC-MS/MS. Conclusion: These findings indicated that phenolic rich B. odorata extract has hypolipidemic and anti-inflammatory effects in hyperlipidemic rats.
- Published
- 2020
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19. Glucosinolates and phenolic compounds rich broccoli extract: Encapsulation by electrospraying and antitumor activity against glial tumor cells.
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Radünz M, Hackbart HCDS, Bona NP, Pedra NS, Hoffmann JF, Stefanello FM, and Da Rosa Zavareze E
- Abstract
Gliomas, intracranial malignant tumors, are aggressive, asymptomatic and difficult to treat due to their degree of infiltration, alternatives are needed to treat the disease. In this sense, natural compounds from the specialized metabolism of plants can act to control the disease. Glucosinolates and phenolic compounds, present in broccoli, have a potential to promote tumor cell death, however due to the low stability of these compounds, encapsulation becomes an alternative for their preservation. The objective was to encapsulate the broccoli extract by electrospraying and to evaluate its cytotoxicity in the primary cell culture of astrocytes and gliomas. The capsules were produced and characterized by encapsulation efficiency, functional groups, thermal stability and morphology, the capsule that presented the best parameters was used for the evaluation of cell cytotoxicity and antitumor activity. Capsules with equal or less than 50 % extract showed high encapsulation efficiency, high thermal stability and uniform morphology due to non-saturation of the active zein sites, which allowed a complete encapsulation of the added extract, as well as a greater protection of the compounds. The capsule with 50 % of the extract showed good results of the efficiency, morphology and thermal stability and was used to evaluate the antitumor activity, since the addition of extract in proportions greater than 60 % promoted saturation of the active sites and lower encapsulation efficiency, and directly affects the morphology and thermal stability. The encapsulated and unencapsulated extracts showed strong selective antitumor effect against glial tumor cells without toxicity to non-tumor cells., (Copyright © 2020 Elsevier B.V. All rights reserved.)
- Published
- 2020
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20. Discrimination of genotype and geographical origin of black rice grown in Brazil by LC-MS analysis of phenolics.
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Dittgen CL, Hoffmann JF, Chaves FC, Rombaldi CV, Filho JMC, and Vanier NL
- Subjects
- Amylose analysis, Discriminant Analysis, Genotype, Glucosides chemistry, Least-Squares Analysis, Oryza genetics, Oryza metabolism, Phenols chemistry, Plant Extracts chemistry, Principal Component Analysis, Quercetin analogs & derivatives, Quercetin chemistry, Vanillic Acid chemistry, Chromatography, High Pressure Liquid, Mass Spectrometry, Oryza chemistry, Phenols analysis
- Abstract
Physicochemical properties, cooking time, and phenolics profile of two black rice genotypes grown at six different locations in Brazil were determined. The cultivar IAC 600 and the elite-line AE 153045 were used. The main growing locations for black rice were considered, as follows: Alegrete (ALG), Capão do Leão (CPL), Guaratinguetá (GUA), Roseira (ROS), Santa Vitória do Palmar (SVP), and Taubaté (TBT). Principal component analysis (PCA) and supervised partial least squares-discriminant analysis (PLS-DA) from liquid chromatography-mass spectrometry (LC-MS) data sets showed distinction among genotypes and locations. Quercetin-3-O-glucoside and vanillic acid were the most relevant compounds for discriminating genotypes. SVP location provided the most distinctive black rice, with greater total phenolics content. Characteristics of black rice from SVP location were associated to effects of latitude and wind conditions. Hesperetin, vanillic acid, quercetion-3-O-glucoside, and p-coumaric acid were the most relevant compounds for discriminating locations., (Copyright © 2019 Elsevier Ltd. All rights reserved.)
- Published
- 2019
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21. Effects of drying temperature and long-term storage conditions on black rice phenolic compounds.
- Author
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Lang GH, Lindemann IDS, Ferreira CD, Hoffmann JF, Vanier NL, and de Oliveira M
- Subjects
- Anthocyanins analysis, Antioxidants analysis, Drug Stability, Flavonoids analysis, Food Preservation methods, Hot Temperature, Hydroxybenzoates, Seeds chemistry, Vacuum, Desiccation methods, Food Storage methods, Oryza chemistry, Phenols analysis, Temperature
- Abstract
This study aimed to investigate the influence of drying temperatures (20, 40, 60, 80, and 100 °C) followed by 12 months-storage under normal-atmosphere (conventional), nitrogen-atmosphere, and vacuum-atmosphere on black rice phenolics. Increase in drying temperature reduced the total content of free-phenolics, free-flavonoids, and anthocyanins. An increase in bound phenolics extractability was observed at 60 and 80 °C, suggesting some extent of phenolics polymerization and complexation at these drying temperatures. The free fraction of ferulic, caffeic, p-coumaric, and gallic acids were the most thermally unstable compounds. After storage, no reductions were observed only for free caffeic and protocatechuic acids. For total flavonoids, an increase in the free fraction and reduction of the bound fraction were observed in the grains stored under conventional- and vacuum-atmosphere. A reduction of total phenolics occurred regardless of the storage condition. However, storage under nitrogen-atmosphere is the most recommendable condition for maintenance of phenolics in black rice., (Copyright © 2019 Elsevier Ltd. All rights reserved.)
- Published
- 2019
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22. Changes in Phenolic Acid and Isoflavone Contents during Soybean Drying and Storage.
- Author
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Ferreira CD, Ziegler V, Schwanz Goebel JT, Hoffmann JF, Carvalho IR, Chaves FC, and de Oliveira M
- Subjects
- Desiccation, Food Preservation, Food Storage, Temperature, Hydroxybenzoates analysis, Isoflavones analysis, Glycine max chemistry
- Abstract
The changes in phenolic acid and isoflavone profile of soybean genotypes ( Nidera 5909 RR and BMX Força RR) dried at different temperatures and stored for 12 months were investigated. In both cultivars, there was a reduction of the germination capacity and an increase of fungal incidence with the increase of drying temperature and storage time. Multivariate analysis of phenolic acids allowed for the differentiation among treatments. Cultivar Nidera 5909 RR, dried at 110 °C, showed an interaction with characters of greater relevance for differentiation, being influenced by the increase of bound coumaric, and syringic, and free-hydroxybenzoic, syringic, and coumaric acids. Multivariate analysis of isoflavones showed a strong affinity of the aglycone isoflavones (genistein, glycitein, and daidzein) within the Nidera 5909 RR cultivar at all drying temperatures and with BMX Força RR cultivar at the highest temperatures. These results indicate that the release and interconversion of isoflavone malonyl-β-glucosides and β-glucosides into aglycone forms are simultaneous reactions during storage.
- Published
- 2019
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23. Hydrothermal treatment of maize: Changes in physical, chemical, and functional properties.
- Author
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Rocha-Villarreal V, Hoffmann JF, Vanier NL, Serna-Saldivar SO, and García-Lara S
- Subjects
- Carotenoids analysis, Nutritive Value, Phenols analysis, Seeds chemistry, Thiamine analysis, Food Handling methods, Zea mays chemistry
- Abstract
The objective of this work was to assess the effects of a traditional parboiling treatment on physical, chemical and functional properties of yellow maize kernels. For this, maize kernels were subjected to the three main stages of a traditional parboiling process (soaking, steaming, and drying) at different moisture contents (15%, 25%, or 35%), and different pressure steaming times (0, 15, or 30 min). Kernels were evaluated for physical and chemical changes, while manually generated endosperm fractions were further evaluated for nutritional and functional changes. The parboiling process negatively altered the maize kernels properties by increasing the number of kernels with burst pericarp and decreasing the total carotenoid content in the endosperm by 42%. However, the most intense conditions (35% moisture and 30 min steam) lowered the number of broken kernels by 41%, and the number of stress cracks by 36%. Results also demonstrated that soaking enhanced the nutritional value of soaked yellow maize by increasing the thiamine content and the bound phenolic content in the endosperm fraction up to 102%. The proper implementation of this hydrothermal treatment could lead to significant enhancements in nutritional and functionality of maize products., (Copyright © 2018 Elsevier Ltd. All rights reserved.)
- Published
- 2018
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24. Planning pathways in the transfer of Directly Observed Treatment of Tuberculosis.
- Author
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Peruhype RC, Mitano F, Hoffmann JF, Surniche CA, and Palha PF
- Subjects
- Brazil, Humans, Planning Techniques, Public Policy, Qualitative Research, Delivery of Health Care organization & administration, Directly Observed Therapy, Tuberculosis drug therapy
- Abstract
Objective: to investigate the planning pathways in the transfer of Directly Observed Treatment of tuberculosis., Method: a qualitative study conducted using interviews and a semi-structured guide, administered to five subjects who were among the coordinators and managers of the tuberculosis control programs, and the secretary of health of a municipality in the south of Brazil. Situational Strategic Planning and Discourse Analysis of the French matrix were the theoretical and analytical references used, respectively., Results: three reflexive axes were identified: weaknesses in the process of planning the Directly Observed Treatment transfer, antagonism between planning and daily requirements and formulation of planning and execution. Lack of systematization regarding the planning and execution for transfer the Directly Observed Treatment policy, demonstrates the fragility and incipience of this activity, and the possibility of its non-existence., Conclusion: the urgent need for managers and coordinators to better appropriate the theoretical framework for changing public policies, and the related planning mechanisms, includes a proposal for reorganization and qualification of the diffusion process, both practical-operative and political-organization.
- Published
- 2018
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25. Optimized Camellia sinensis var. sinensis, Ilex paraguariensis, and Aspalathus linearis blend presents high antioxidant and antiproliferative activities in a beverage model.
- Author
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Santos JS, Deolindo CTP, Hoffmann JF, Chaves FC, do Prado-Silva L, Sant'Ana AS, Azevedo L, do Carmo MAV, and Granato D
- Subjects
- Adolescent, Adult, Anti-Infective Agents pharmacology, Antioxidants analysis, Beverages, Caco-2 Cells, Female, Hep G2 Cells, Humans, Male, Middle Aged, Pasteurization, Phenols analysis, Plant Extracts pharmacology, Reactive Oxygen Species metabolism, Taste, Antioxidants pharmacology, Aspalathus chemistry, Camellia sinensis chemistry, Ilex paraguariensis chemistry, Teas, Herbal analysis
- Abstract
A statistical optimization study was conducted to obtain a tea containing fermented rooibos (Aspalathus linearis), white tea (Camellia sinensis var. sinensis), and roasted mate (Ilex paraguariensis). An optimal combination of these species was proposed. This optimized tea inhibited 64% the lipoperoxidation in vitro and presented a high phenolic content, especially kaempferol, (+)-catechin, (-)-epicatechin, rutin, (-)-epigallocatechin, and (-)-epicatechin-2-O-gallate. Indeed, the antioxidant effect was confirmed by decreasing 30% the reactive oxygen species generation in human hepatoma carcinoma cells (HepG2, 100 and 240 µg/mL). In the cell viability assay, the GI
50 for human colorectal adenocarcinoma epithelial cells (Caco-2) was about 547 µg/mL and 481 µg/mL for HepG2. The pasteurization process (65 °C/30 min) did not affect the total phenolic content and antioxidant activity of the optimized tea formulation. The sensory test indicated an acceptability index of 78%, showing that the analytical approach adopted was feasible to develop a phenolic-rich beverage., (Copyright © 2018 Elsevier Ltd. All rights reserved.)- Published
- 2018
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26. Directly Observed Treatment: planning perspectives, improvisation and transfer of policy.
- Author
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Peruhype RC, Costa SG, Hoffmann JF, Bissell K, Mitano F, Sá LD, and Palha PF
- Subjects
- Brazil, Humans, Interviews as Topic methods, Public Health legislation & jurisprudence, Qualitative Research, Tuberculosis therapy, Health Policy, Public Health methods
- Abstract
Objective: to investigate the possibilities of positive and negative association of improvisation and the understanding of what will be the planning by managers and coordinators of tuberculosis control programs, in a context of transference of the Directly Observed Treatment policy., Method: this is a qualitative study, developed through semi-structured interviews analyzed in the light of French Discourse Analysis., Results: there was a weakening of the constructive and operational planning process, which is at the mercy of political will and the need of putting out fires. This, in turn, along with achômetro (Brazilian popular expression used on unsubstantiated point of view or opinion that is based solely and exclusively on the intuition of the person who says it), composed the metaphor of improvisation in its negative perspective, understood by automatism and unsystematization process. Improvisation, however, emerged as a representation of innovation, creativity, and contextual change., Final Considerations: both the planning and the transfer of public policies constitute processes that need to be strengthened and qualified in the field of public health.
- Published
- 2018
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27. Quality of black beans as a function of long-term storage and moldy development: Chemical and functional properties of flour and isolated protein.
- Author
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Ferreira CD, Ziegler V, Lindemann IDS, Hoffmann JF, Vanier NL, and Oliveira M
- Subjects
- Fermentation, Food Contamination, Food Microbiology, Food Quality, Hydroxybenzoates analysis, Mycotoxins analysis, Phaseolus chemistry, Plant Proteins, Dietary analysis, Temperature, Viscosity, Flour analysis, Food Storage methods, Phaseolus microbiology, Plant Proteins, Dietary chemistry
- Abstract
The aim of this study was to evaluate the effects of moisture content and storage temperature on the percentage of moldy and fermented beans, mycotoxins levels, phenolic acids content, pasting properties of whole flour, as well as functional and thermal properties of protein isolates from black beans stored for 12 months. Beans stored under 14%/32 °C exhibited 16% of fermented grains, while at 17%/25 °C (42.3%) and 17%/32 °C (93.5%) of moldy plus fermented grains, named drastic conditions (DC). Mycotoxins were not present in grains from all storage conditions. Reduction of gallic, caffeic, and p-hydroxybenzoic acid contents, and increase of sinapic acid were observed in DC. Reduction of peak, final, and setback viscosities of bean flours in DC indicate the application in refrigerated and frozen products. The increase in foaming and reduction in foam degradation of the proteins highlights their use in beverages where the foam is an important factor., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2018
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28. Cooking quality properties and free and bound phenolics content of brown, black, and red rice grains stored at different temperatures for six months.
- Author
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Ziegler V, Ferreira CD, Hoffmann JF, Chaves FC, Vanier NL, de Oliveira M, and Elias MC
- Subjects
- Color, Cooking, Food Quality, Food Storage methods, Oryza chemistry, Phenols analysis, Phenols chemistry, Temperature
- Abstract
The changes in cooking quality and phenolic composition of whole black and red rice grains stored during six months at different temperatures were evaluated. Brown rice with known cooking quality properties and low phenolic levels was used for purposes comparison. All rice genotypes were stored at 13% moisture content at temperatures of 16, 24, 32, and 40°C. Cooking time, hardness, free and bound phenolics, anthocyanins, proanthocyanidins, and free radical scavenging capacity were analysed. The traditional rice with brown pericarp exhibited an increase in cooking time and free phenolics content, while rice with black pericarp exhibited a reduction in cooking time after six months of storage at the highest studied temperature of 40°C. There as increases in ferulic acid levels occurred as a function of storage temperature. Red pericarp rice grains showed decreased antioxidant capacity against ABTS radical for the soluble phenolic fraction with increased time and storage temperature., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2018
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29. Effects of moisture and temperature during grain storage on the functional properties and isoflavone profile of soy protein concentrate.
- Author
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Ziegler V, Ferreira CD, Hoffmann JF, de Oliveira M, and Elias MC
- Subjects
- Edible Grain chemistry, Food Storage, Solubility, Temperature, Isoflavones analysis, Soybean Proteins chemistry, Glycine max chemistry
- Abstract
The objective of this study was evaluate the effects of moisture and temperature during grain storage on the functional properties and isoflavone profile of soy protein concentrate. The protein concentrate was extracted from soybeans on the first day of storage and after 12months of storage, at 12 and 15% moisture and at temperatures of 11, 18, 25, and 32°C. The protein concentrate obtained from grains stored at 32°C showed decreased extraction yield (51.6% with 15% of moisture) and protein solubility (24.8% with 15% of moisture) with increased emulsifying capacity (52.2% with 12% of moisture) and foam formation, compared with sample obtained at the start of the storage period. The isoflavone profile showed a decrease in the concentrations of glycosylated, malonyl, and acetyl isoflavones and a corresponding increase in the concentrations of aglycone isoflavones, with the magnitude of these changes increasing with increasing storage temperature and moisture content., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2018
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30. Polar Origanum vulgare (Lamiaceae) extracts with antifungal potential against Sporothrix brasiliensis.
- Author
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Waller SB, Hoffmann JF, Madrid IM, Picoli T, Cleff MB, Chaves FC, Zanette RA, de Mello JRB, de Faria RO, and Meireles MCA
- Subjects
- Animals, Antioxidants, Cats, Cell Line, Cell Survival drug effects, Dogs, Madin Darby Canine Kidney Cells, Microbial Sensitivity Tests, Plant Extracts isolation & purification, Sporotrichosis drug therapy, Sporotrichosis microbiology, Antifungal Agents pharmacology, Origanum chemistry, Plant Extracts pharmacology, Sporothrix drug effects
- Abstract
Oregano (Origanum vulgare) has anti-Sporothrix spp. activity, including against strains that are resistant to antifungal drugs. As the studies are limited to the essential oil, the aim of this study was to evaluate the chemical, antioxidant and cytotoxic properties of polar oregano extracts and their anti-Sporothrix brasiliensis activity. Aerial plant parts were used in the preparation of 10 min (INF10) and 60 min (INF60) infusions, a decoction (DEC) and a hydroalcoholic extract (HAE). Six phenolic acids and four flavonoids were identified and quantified through liquid-chromatography (LC-MS). Extracts in increasing order of total phenolic and flavonoid contents were HAE
40 mg/ml for the other extracts. This is the first report of oregano extracts showing antifungal activity against S. brasiliensis. Its use in the treatment of sporotrichosis may be considered upon toxicity and safe-use conditions are tested., (© The Author 2017. Published by Oxford University Press on behalf of The International Society for Human and Animal Mycology. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.) - Published
- 2018
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31. Stability of bioactive compounds in butiá (Butia odorata) fruit pulp and nectar.
- Author
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Hoffmann JF, Zandoná GP, Dos Santos PS, Dallmann CM, Madruga FB, Rombaldi CV, and Chaves FC
- Subjects
- Antioxidants, Fruit, Phenols, Arecaceae, Plant Nectar
- Abstract
Butia odorata is a palm tree native to southern Brazil whose fruit (known as butiá) and leaves are used to make many food products and crafts. Butiá contain several biologically active compounds with potential health benefits. However, processing conditions can alter quality attributes including bioactive compound content. This study evaluated the stability of bioactive compounds in butiá pulp upon pasteurization, during 12months of frozen storage, and in butiá nectar after a 3-month storage period. Pulp pasteurization resulted in a reduction in phenolic, flavonoid, carotenoid, and ascorbic acid contents. After a 12-month frozen storage period, flavonoid, phenolic, and ascorbic acid contents decreased while carotenoid content remained unaltered. Carotenoid, ascorbic acid, and phenolic contents were unaffected by the 3-month storage of butiá nectar; however, flavonoid content and antioxidant potential were reduced. Despite bioactive compound degradation upon heat treatment and storage, butiá nectar remained rich in phenolics, especially (-)-epicatechin, rutin, and (+)-catechin., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2017
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32. Effects of Organic and Conventional Cropping Systems on Technological Properties and Phenolic Compounds of Freshly Harvested and Stored Rice.
- Author
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Alves GH, Paraginski RT, Lamas NS, Hoffmann JF, Vanier NL, and de Oliveira M
- Subjects
- Antioxidants analysis, Chemical Phenomena, Coumaric Acids analysis, Edible Grain chemistry, Hydroxybenzoates analysis, Propionates analysis, Agriculture methods, Food Preservation, Organic Agriculture methods, Oryza chemistry, Oryza growth & development, Phenols analysis
- Abstract
This study compared the physicochemical and technological properties of the IRGA 410 rice cultivar, obtained from organic and conventional cropping systems, and showed its susceptibility to changes during storage at 0, 6, and 12 mo. The rice conventional cropping system exhibited greater protein, lipids, and ash levels, and a head rice yield. However, organic rice presented greater total carbohydrates, soluble protein, amylose content, 33% greater free phenolics, and phenolic acids, but exhibited a greater percentage of stained grains during the storage period. The free phenolic content of cooked rice was lower than the free phenolic content of the raw rice. By Liquid chromatography with mass spectrometer (LC-MS) were identified p-coumaric and ferulic acids in both fractions (free and bound). The content of p-coumaric acid and ferulic acid in bound fraction was higher in organic brown rice than in conventional brown rice. At 6 and 12 mo of storage, the main fungi found were Aspergillus sp. and Penicillium sp. Prior to storage, the Bipolaris sp. fungi was identified only in organic rice. For conventional rice, the infestation level by Aspergillus sp. increased from 3% to 70% at the 6th mo of storage. In addition to the advantage of organic rice being free of agrochemicals, this study revealed that natural plant defense compounds could be produced when the rice was subjected to more biotic and abiotic stresses. However, some disadvantages were observed, such as lower protein content and a greater percentage of soluble protein, which favored the breaking of rice in processing, and a greater percentage of grain stained before and during storage., Practical Application: The organic and conventional cropping systems affect the physicochemical and technological properties of rice grains, which is one of the main cereals grown and consumed in the world. This study shows the advantages and disadvantages of the cropping system in grain properties that are in the interest of both consumers and processing industries., (© 2017 Institute of Food Technologists®.)
- Published
- 2017
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33. Untargeted Metabolomic Analysis of Capsicum spp. by GC-MS.
- Author
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Aranha BC, Hoffmann JF, Barbieri RL, Rombaldi CV, and Chaves FC
- Subjects
- Gas Chromatography-Mass Spectrometry, Capsicum chemistry, Fruit chemistry, Metabolomics
- Abstract
Introduction: In order to conserve the biodiversity of Capsicum species and find genotypes with potential to be utilised commercially, Embrapa Clima Temperado maintains an active germplasm collection (AGC) that requires characterisation, enabling genotype selection and support for breeding programmes., Objective: The objective of this study was to characterise pepper accessions from the Embrapa Clima Temperado AGC and differentiate species based on their metabolic profile using an untargeted metabolomics approach., Material and Methods: Cold (-20°C) methanol extraction residue of freeze-dried fruit samples was partitioned into water/methanol (A) and chloroform (B) fractions. The polar fraction (A) was derivatised and both fractions (A and B) were analysed by gas chromatography coupled to mass spectrometry (GC-MS). Data from each fraction was analysed using a multivariate principal component analysis (PCA) with XCMS software., Results: Amino acids, sugars, organic acids, capsaicinoids, and hydrocarbons were identified. Outlying accessions including P116 (C. chinense), P46, and P76 (C. annuum) were observed in a PCA plot mainly due to their high sucrose and fructose contents. PCA also indicated a separation of P221 (C. annuum) and P200 (C. chinense), because of their high dihydrocapsaicin content., Conclusions: Although the metabolic profiling did not allow for grouping by species, it permitted the simultaneous identification and quantification of several compounds complementing and expanding the metabolic database of the studied Capsicum spp. in the AGC. Copyright © 2017 John Wiley & Sons, Ltd., (Copyright © 2017 John Wiley & Sons, Ltd.)
- Published
- 2017
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34. Foliar Desiccators Glyphosate, Carfentrazone, and Paraquat Affect the Technological and Chemical Properties of Cowpea Grains.
- Author
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Lindemann IDS, Lang GH, Hoffmann JF, Rombaldi CV, de Oliveira M, Elias MC, and Vanier NL
- Subjects
- Glycine pharmacology, Seeds drug effects, Vigna chemistry, Glyphosate, Glycine analogs & derivatives, Herbicides pharmacology, Paraquat pharmacology, Seeds chemistry, Triazoles pharmacology, Vigna drug effects
- Abstract
The effects of the use of glyphosate (GLY), glyphosate plus carfentrazone (GLY/CAR), and paraquat (PAR) as plant desiccators on the technological and chemical properties of cowpea grains were investigated. All studied desiccants provided lower cooking time to freshly harvested cowpea. However, the coat color of PAR- and GLY/CAR-treated cowpea was reddish in comparison to the control treatment. Principal component analysis (PCA) from liquid chromatography-mass spectrometry (LC-MS) data sets showed a clear distinction among cowpea from the different treatments. Catechin-3-glucoside and epicatechin significantly contributed for discriminating GLY-treated cowpea, while citric acid was responsible for discriminating GLY/CAR-treated cowpea. Quercetin derivative and gluconic acid were responsible for discriminating control treatment. Residual glyphosate and paraquat content was higher than the maximum limits allowed by Codex Alimentarius and the European Union Commission. Improvements in the technological and chemical properties of cowpea may not be overlapped by the risks that those desiccants exhibit when exceeding the maximum limits of tolerance in food.
- Published
- 2017
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35. Chemical composition and cytotoxicity of extracts of marjoram and rosemary and their activity against Sporothrix brasiliensis.
- Author
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Waller SB, Madrid IM, Hoffmann JF, Picoli T, Cleff MB, Chaves FC, Faria RO, Meireles MCA, and Braga de Mello JR
- Subjects
- Animals, Antifungal Agents isolation & purification, Antifungal Agents toxicity, Cats, Cell Line, Cell Survival drug effects, Chromatography, Liquid, Dogs, Mass Spectrometry, Microbial Sensitivity Tests, Phytochemicals isolation & purification, Phytochemicals toxicity, Plant Extracts isolation & purification, Plant Extracts toxicity, Antifungal Agents pharmacology, Origanum chemistry, Phytochemicals pharmacology, Plant Extracts pharmacology, Rosmarinus chemistry, Sporothrix drug effects
- Abstract
Purpose: Motivated by increasing reports of antifungal resistance in human and animal sporotrichosis, this study evaluated the chemical composition, cytotoxicity and anti-Sporothrix brasiliensis activity of extracts of marjoram (Origanum majorana) and rosemary (Rosmarinus officinalis)., Methodology: Ten (INF10) and 60 min (INF60) infusions, a decoction and a hydroalcoholic extract (HAE, 70 %) were prepared from both plants (10 % w/v). The extract composition was analysed by liquid chromatography/mass spectrometry and the cytotoxicity was evaluated using a colorimetric assay in canine and feline kidney cells. Using a broth microdilution assay (CLSI M38-A2) adapted to the extracts, 30 Sporothrix brasiliensis isolates from dogs, cats and humans, and one Sporothrix schenckii were tested.Results/Key findings. The predominant phenolic compounds found in all extracts were 4-hydroxybenzoic acid, caffeic acid and chlorogenic acid. Luteolin was also one of the predominant compounds, but only in the HAE of marjoram. Extracts of marjoram maintained cell viability in concentrations up to 2.5 mg ml-1 for the feline cell line and up to 10 mg ml-1 for the canine cell line, whereas in rosemary, the cell viability for both kidney lines was maintained with concentrations up to 5 mg ml-1. The activity of rosemary extracts was low or absent. Among the marjoram extracts, HAE was highlighted and had fungistatic activity against Sporothrix brasiliensis (MIC5040 mg ml-1), including in all itraconazole-resistant isolates. S. schenckiisensu stricto was sensitive to marjoram extracts (MIC/MFC ≤5 mg ml-1), with the exception of INF10., Conclusion: These findings support the potential usefulness of the HAE of marjoram in the treatment of sporotrichosis.
- Published
- 2017
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36. Association between dietary patterns and mental disorders in pregnant women in Southern Brazil.
- Author
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Paskulin JTA, Drehmer M, Olinto MT, Hoffmann JF, Pinheiro AP, Schmidt MI, and Nunes MA
- Subjects
- Adolescent, Adult, Anxiety Disorders epidemiology, Brazil epidemiology, Candy statistics & numerical data, Cross-Sectional Studies, Depressive Disorder, Major epidemiology, Female, Food Preferences, Fruit, Humans, Phaseolus, Pregnancy, Prevalence, Severity of Illness Index, Socioeconomic Factors, Young Adult, Diet Surveys statistics & numerical data, Feeding Behavior, Mental Disorders epidemiology, Pregnancy Complications epidemiology
- Abstract
Objective:: To evaluate the association between dietary patterns and mental disorders among pregnant women in southern Brazil., Methods:: Cross-sectional study with 712 pregnant women recruited from the Study of Food Intake and Eating Behaviors in Pregnancy (ECCAGe). Food intake assessment was performed using the Food Frequency Questionnaire. Dietary patterns were identified by cluster analysis. The Primary Care Evaluation of Mental Disorders (PRIME-MD) was used to evaluate participants' mental health. Poisson regression models with robust variance were fitted to estimate prevalence ratios (PR)., Results:: In the adjusted models, there was a high prevalence of major depressive disorder among women with low fruit intake (43%, PR 1.43, 95%CI 1.04-1.95) and high sweets and sugars intake (91%, PR 1.91, 95%CI 1.19-3.07). Women with a common-Brazilian dietary pattern had higher prevalence of major depressive disorder compared to those with a varied consumption pattern (PR 1.43, 95%CI 1.01-2.02). Low intake of beans was significantly associated with generalized anxiety disorder (PR 1.40, 95%CI 1.01-1.93)., Conclusions:: Low consumption of fruits and beans and intake of the common-Brazilian dietary pattern during pregnancy were associated with higher prevalence of mental disorders. These results reinforce the importance of an adequate dietary intake to ensure better mental health in pregnancy.
- Published
- 2017
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37. Liquid Chromatography with mass spectrometry analysis of mycotoxins in food samples using silica hydride based stationary phases.
- Author
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Pesek JJ, Matyska MT, Hoffmann JF, Madruga NA, Crizel RL, Elias MC, Vanier NL, and Chaves FC
- Subjects
- Chromatography, Liquid, Mass Spectrometry, Food Contamination analysis, Mycotoxins analysis, Silicates
- Abstract
Liquid chromatography with mass spectrometry analysis of selected food samples using silica hydride stationary phases allowed for the identification and quantification of common mycotoxins including aflatoxin B1, B2, G1, G2, ochratoxin A, and fumosinin B1. Phenyl and C
18 columns showed relatively similar selectivity based on hydrophobicity but the phenyl phase provides an additional mechanism, π-π interaction. The most hydrophobic of the analyzed compounds was more strongly retained on the C18 column and also has fewer unsaturated sites, which limited the interaction with the phenyl phase. Bean, maize, rice, and wheat samples were harvested and stored under conditions conducive to fungal development, and all samples presented toxin contamination exceeding the maximum tolerable limits., (© 2017 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.)- Published
- 2017
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38. Chemical and cytotoxic analyses of brown Brazilian propolis (Apis mellifera) and its in vitro activity against itraconazole-resistant Sporothrix brasiliensis.
- Author
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Waller SB, Peter CM, Hoffmann JF, Picoli T, Osório LD, Chaves F, Zani JL, de Faria RO, de Mello JR, and Meireles MC
- Subjects
- Animals, Antifungal Agents chemistry, Antifungal Agents isolation & purification, Biological Products chemistry, Biological Products isolation & purification, Brazil, Cat Diseases microbiology, Cats, Cell Line, Cell Survival drug effects, Chromatography, Liquid, Dog Diseases microbiology, Dogs, Drug Resistance, Fungal, Itraconazole pharmacology, Mass Spectrometry, Microbial Sensitivity Tests, Microbial Viability drug effects, Sporothrix isolation & purification, Sporotrichosis veterinary, Antifungal Agents pharmacology, Antifungal Agents toxicity, Biological Products pharmacology, Biological Products toxicity, Propolis pharmacology, Propolis toxicity, Sporothrix drug effects
- Abstract
This study aimed to evaluate the chemical composition and cytotoxic activity of brown Brazilian propolis and its in vitro activity against itraconazole-resistant Sporothrix brasiliensis from animal sporotrichosis. Propolis was acquired commercially and prepared as a hydroalcoholic extract. Chemical analysis was evaluated by liquid chromatography coupled to mass spectrometry of ultra-efficiency. The cell viability was evaluated by MTT test in MDBK cells of 50 to 0.09 μg/mL. For antifungal tests, twenty isolates of Sporothrix brasiliensis from dogs (n = 11) and cats (n = 9) with sporotrichosis were tested to itraconazole (16-0.0313 μg/mL) and to propolis (3.125-0.09 mg/mL) by broth microdilution technique (CLSI M38-A2), adapted to natural products. The results were expressed in minimal inhibitory concentration (MIC) and minimal fungicidal concentration (MFC). Itraconazole showed activity between MIC values of 0.25 to greater than 16 μg/mL, and 88.9% (08/09) and 72.7% (08/11) of S. brasiliensis from cats and dogs, respectively, were considered itraconazole-resistant. All Sporothrix brasiliensis were sensitive to brown propolis between MIC values of 0.19-1.56 mg/mL, including the itraconazole-resistant isolates, whereas the MFC values of propolis were from 0.78 to greater than 3.125 mg/mL. Propolis maintained a medium to high cell viability between concentration of 0.78 to 0.09 μg/mL, and p-coumaric acid was the major compound. Brown Brazilian propolis is a promising antifungal candidate against sporotrichosis and more studies need to be undertaken to evaluate its safe use to understand its efficacy., (Copyright © 2017 Elsevier Ltd. All rights reserved.)
- Published
- 2017
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39. Starch digestibility and molecular weight distribution of proteins in rice grains subjected to heat-moisture treatment.
- Author
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Silva WM, Biduski B, Lima KO, Pinto VZ, Hoffmann JF, Vanier NL, and Dias AR
- Subjects
- Molecular Weight, Oryza chemistry, Starch chemistry
- Abstract
The objective of this study was to evaluate the effects of the heat-moisture treatment (HMT) applied to paddy rice grains on the physicochemical properties, in vitro starch digestibility, and molecular weight distribution of proteins in rice flour. The paddy rice grains were adjusted to 13%, 16%, and 18% moisture and autoclaved at 121°C for 30 and 60min. The HMT promoted a reduction of the amylose content, the swelling power, and the solubility of the rice flour. Changes in the relative crystallinity and molecular weight of the proteins extracted with a sodium phosphate buffer containing 2.0% sodium dodecyl sulfate (SDDS) were observed in HMT samples. The different methods for the quantification of resistant starch resulted in distinct resistant starch contents. The HMT (18%-60min) promoted an increase in resistant starch content and the HMT (16%-60min) caused an increase in the slowly digestible starch in the rice flour., (Copyright © 2016. Published by Elsevier Ltd.)
- Published
- 2017
- Full Text
- View/download PDF
40. Butia spp. (Arecaceae) LC-MS-Based Metabolomics for Species and Geographical Origin Discrimination.
- Author
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Hoffmann JF, Carvalho IR, Barbieri RL, Rombaldi CV, and Chaves FC
- Subjects
- Brazil, Chromatography, Liquid methods, Fruit chemistry, Fruit metabolism, Mass Spectrometry methods, Metabolomics, Multivariate Analysis, Principal Component Analysis, Arecaceae chemistry, Arecaceae metabolism, Metabolome
- Abstract
The metabolic variability of fruit from Butia spp. (Arecaceae) genotypes from different geographical locations was characterized using untargeted metabolomics by liquid chromatography-mass spectrometry (LC-MS) followed by multivariate data analyses. Principal component analysis (PCA) and partial least-squares discriminant analysis (PLS-DA) from LC-MS data sets showed a clear distinction among Butia catarinensis, Butia odorata, Butia paraguayensis, and Butia yatay. The major metabolites that contributed to species discrimination were primary metabolites including sugars and organic acids and specialized metabolites such as tetrahydroxy-trans-stilbene and rutin. B. odorata fruit from Tapes, RS, Brazil, showed a high content of organic acids and flavonoids, whereas B. odorata fruits from Capão do Leão, RS, Brazil, showed a high sugar content. The results demonstrate that LC-ESI-qToF-MS-based metabolic profiling coupled with chemometric analysis can be used to discriminate among Butia species and between geographical origins of B. odorata and to identify primary and specialized metabolites responsible for the discrimination.
- Published
- 2017
- Full Text
- View/download PDF
41. An Algorithm for the Initial Management of Nasal Trauma.
- Author
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Hoffmann JF
- Subjects
- Closed Fracture Reduction, Humans, Nasal Bone diagnostic imaging, Nasal Bone surgery, Nasal Septum diagnostic imaging, Nasal Septum surgery, Physical Examination, Rhinoplasty methods, Skull Fractures classification, Tomography, X-Ray Computed, Algorithms, Nasal Bone injuries, Nasal Septum injuries, Rhinoplasty instrumentation, Skull Fractures diagnostic imaging, Skull Fractures therapy
- Abstract
Nasal fractures are the most common of all facial skeletal injuries. Untreated, these fractures frequently lead to functional and aesthetic problems. Careful history and physical assessment are critical to determine the extent of injury and to determine proper management. Critical aspects of assessment are discussed, as is the role of imaging in management. The unique aspects of pediatric nasal fractures and their management are reviewed. Fractures are classified based on the degree of injury and the involvement of the septum. A simple treatment algorithm is provided to help guide the selection of optimal treatment techniques. A review of instrumentation and treatment techniques is provided. The goal of treatment is to restore the nose to its preinjury shape and function and to minimize the need for secondary septorhinoplasty., (Thieme Medical Publishers 333 Seventh Avenue, New York, NY 10001, USA.)
- Published
- 2015
- Full Text
- View/download PDF
42. Bioactive and yield potential of jelly palms (Butia odorata Barb. Rodr.).
- Author
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Beskow GT, Hoffmann JF, Teixeira AM, Fachinello JC, Chaves FC, and Rombaldi CV
- Subjects
- Anthocyanins analysis, Antioxidants pharmacology, Arecaceae genetics, Ascorbic Acid analysis, Carotenoids analysis, Fruit chemistry, Genotype, Phenols analysis, Arecaceae chemistry
- Abstract
In this descriptive study, Butia odorata genotypes were evaluated for yield, fruit number, pulp yield, bioactive content (including phenolic compounds, carotenoid, anthocyanin, L-ascorbic acid, and fibre content), antioxidant potential, and phenotypic characteristics. Genotype 117 was the highest yielding, with an estimated fruit yield of 22,000 kg ha(-1) and pulp yield of 12,000 kg ha(-1). On the other hand, the lowest yielding genotype, accession 49, showed an estimated fruit yield of 8400 kg ha(-1). Jelly palm fruit were generally rich in phenolic content (280.50-398.50 mg 100(-1)g), carotenoid content (2.80-4.08 mg 100 g(-1)), and L-ascorbic acid content (34.63-63.84 mg 100g(-1)). While the highest yielding genotype was not the richest in bioactive content, the lowest yielding genotype showed the highest l-ascorbic acid content. Although fruit yield and phytochemical composition are desirable attributes in jelly palm fruit, none of the genotypes evaluated showed high levels of both. Therefore, fruit yield and bioactive phytochemical content appear to be inversely proportional., (Copyright © 2014 Elsevier Ltd. All rights reserved.)
- Published
- 2015
- Full Text
- View/download PDF
43. High prevalence of diabetes and intermediate hyperglycemia - The Brazilian Longitudinal Study of Adult Health (ELSA-Brasil).
- Author
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Schmidt MI, Hoffmann JF, de Fátima Sander Diniz M, Lotufo PA, Griep RH, Bensenor IM, Mill JG, Barreto SM, Aquino EM, and Duncan BB
- Abstract
Background: The global burden of diabetes mellitus and other chronic diseases is high, and 80% of those with diabetes now live in low and middle income countries. Yet, little information is available regarding prevalence of diabetes and intermediate hyperglycemia in these countries, especially when a full range of diagnostic tests is employed. The purpose of this study is to provide a full accounting of these prevalences in a large, free-living Brazilian population., Methods: We report baseline data (2008-2010) from the Brazilian Longitudinal Study of Adult Health (ELSA-Brasil), a cohort study of 15,105 civil servants aged 35-74 years. Diabetes mellitus was ascertained by self-report of diagnosis, medication use, fasting glucose, an oral glucose tolerance test, and/or glycated hemoglobin. Cut-offs for diabetes and intermediate hyperglycemia followed the recommendations of the World Health Organization and the American Diabetes Association. Adjusted prevalences were estimated through logistic regression., Findings: With this full accounting, 19.7% (19.0%-20.3%) had diabetes mellitus, 50.4% being previously undiagnosed. Frequencies of intermediate hyperglycemia according to various criteria ranged from 16.1% to 52.6%. Diabetes or intermediate hyperglycemia was present in 79.1% of participants when using the most comprehensive definitions. The burden was greatest in the elderly, the obese, non-whites, and those with less formal education (p < 0.001)., Interpretation: That four of every five free-living individuals aged 35-74 years working in selected public institutions in six Brazilian state capitals presented either diabetes or intermediate hyperglycemia highlights the advanced stage of the obesity - diabetes epidemic in urban Brazil and indicates the need for urgent action.
- Published
- 2014
- Full Text
- View/download PDF
44. Eating disorders symptoms in pregnancy and postpartum: a prospective study in a disadvantaged population in Brazil.
- Author
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Nunes MA, Pinheiro AP, Hoffmann JF, and Schmidt MI
- Subjects
- Adult, Body Weight, Brazil epidemiology, Feeding Behavior, Feeding and Eating Disorders diagnosis, Female, Humans, Postpartum Period, Pregnancy, Pregnancy Complications diagnosis, Prospective Studies, Socioeconomic Factors, Surveys and Questionnaires, Vulnerable Populations, Young Adult, Feeding and Eating Disorders epidemiology, Pregnancy Complications epidemiology, Puerperal Disorders epidemiology
- Abstract
Objective: To assess eating disorder symptoms (EDS) from prepregancy through postpartum., Method: Seven hundred and twelve women with gestational age ranging from 16th to 36th week completed the eating disorder examination questionnaire (EDE-Q). A shortened version of the EDE-Q was used to assess, retrospectively, EDS during the last 28 days of the pregestational period. Follow up assessment occurred at the 4th-5th month postpartum (n = 427). Generalized structural equation models were used to estimate risk of EDS in pregestation, gestation, and postpartum., Results: Women who did not participate in follow up (n = 285) were not significantly different in sociodemographic characteristics. In postpartum, a higher number of women referred shape (RR = 1.65; 95% CI 1.19-2.30) and weight concerns (RR = 1.64; 95% CI 1.16-2.31) than in pregestation. Binge eating (BE) and self-induced vomiting diminished during pregnancy (RR = 0.70, 95% CI 0.57-0.85; RR = 0.21, 95% CI 0.10-0.44, respectively) and postpartum (RR = 0.62, 95% CI 0.48-0.80; RR = 0.38, 95% CI 0.19-0.76, respectively) compared with pregestation, Discussion: Shape and weight concerns are highly prevalent in postpartum and may confer risk for the development of inappropriate eating behaviors. Health professionals should be trained on how to recognize these symptoms., (Copyright © 2013 Wiley Periodicals, Inc.)
- Published
- 2014
- Full Text
- View/download PDF
45. Health-related quality of life in Brazil: normative data for the SF-36 in a general population sample in the south of the country.
- Author
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Cruz LN, Fleck MP, Oliveira MR, Camey SA, Hoffmann JF, Bagattini AM, and Polanczyk CA
- Subjects
- Adult, Brazil, Female, Humans, Male, Quality of Life, Surveys and Questionnaires
- Abstract
The objective of this study was to provide normative SF-36 scores in a general population sample in Brazil and to describe differences in mean scores according to socio-demographic characteristics. The SF-36 questionnaire was distributed to a randomly selected sample of the general population of Porto Alegre in the State of Rio Grande do Sul. The response rate was 68% and 755 subjects were included (38% male, 62% female). Lower health status was revealed among females in the 30 to 44 year age bracket, from the lower income class, with less education and self-reported chronic medical conditions. The results and percentiles of scores of the SF-36 are reported as normative data for the general population. The SF-36 was an acceptable and practical instrument for measuring health-related quality of life in a sample of Brazilians. The results of this study can be useful for researchers using the SF-36 questionnaire in other groups to compare the scores with normative data. The SF-36 may prove a valuable tool for discovering vulnerable groups in epidemiological studies due to the ability to discriminate between different population subgroups.
- Published
- 2013
- Full Text
- View/download PDF
46. Dietary patterns during pregnancy and the association with sociodemographic characteristics among women attending general practices in southern Brazil: the ECCAGe Study.
- Author
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Hoffmann JF, Nunes MA, Schmidt MI, Olinto MT, Melere C, Ozcariz SG, Buss C, Drhemer M, Manzolli P, Soares RM, Pinheiro AP, and Camey S
- Subjects
- Adult, Body Mass Index, Brazil, Cluster Analysis, Energy Intake, Female, Humans, Pregnancy, Socioeconomic Factors, Surveys and Questionnaires, Young Adult, Feeding Behavior
- Abstract
The assessment of the relationship between food intake and sociodemographic factors is crucial for developing effective public health policies. The present study aimed to examine dietary patterns in pregnant women and the association between these patterns and sociodemographic characteristics. Pregnant women attending general practices in southern Brazil (n = 712) answered a questionnaire and a food-frequency questionnaire with 88 items. Three dietary patterns were identified using cluster analysis. The association between the dietary patterns and sociodemographic variables was analyzed using the chi-square test and adjusted standardized residuals (p < 0,05). The restricted pattern was associated with lower maternal age, not living with a partner and being a non-working student. The varied pattern was associated with older maternal age, living with a partner, being employed and higher levels of education and income. The common-Brazilian dietary pattern included traditional Brazilian food items and was associated with lower levels of education and income, being unemployed and being a non-student.
- Published
- 2013
47. Healthy eating index for pregnancy: adaptation for use in pregnant women in Brazil.
- Author
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Melere C, Hoffmann JF, Nunes MA, Drehmer M, Buss C, Ozcariz SG, Soares RM, Manzolli PP, Duncan BB, and Camey SA
- Subjects
- Adolescent, Adult, Brazil, Diet Surveys, Feeding Behavior, Female, Humans, Young Adult, Diet standards, Nutrition Assessment, Pregnancy, Surveys and Questionnaires
- Abstract
Objective: To evaluate dietary quality in a sample of pregnant women based on one simple and objective parameter., Methods: Pregnant women (n = 712), between 16 and 36 weeks, attending primary care clinics in Porto Alegre and Bento Gonçalves, Southern Brazil, in 2010 were recruited to take part. The Healthy Eating Index for Brazilian Pregnancy (HEIP-B) was created, derived from the American instrument called Alternate Healthy Eating Index for Pregnancy (AHEI-P). Questionnaires on frequency of consumption and on socio-demographic factors were completed. Focused principal component analysis (ACPF) was used to assess the relationship between the index and nutrients relevant to pregnancy., Results: The median (interquartile range) of AHEI-P and HEIP-B were 66.6 (57.8-72.4) and 67.4 (60.0-73.4), respectively. The HEIP-B showed a good positive correlation with nutrients which are specifically recommended for pregnancy: folate (r = 0.8; p < 0.001), calcium (r = 0.6; p < 0.001) and iron (r = 0.7; p < 0.001)., Conclusions: The quality of the diet of the pregnant women in this study was classified as within the "improvements needed" cut off point, which demonstrates the need for more specific education on nutrition for this stage of life. The index showed good correlations and, thus, may be considered an effective tool for assessing the quality of nutrition during pregnancy.
- Published
- 2013
- Full Text
- View/download PDF
48. Contemporary neurotoxins and injectable fillers.
- Author
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Hoffmann JF
- Subjects
- Humans, Patient Safety, Plastic Surgery Procedures methods, Biocompatible Materials therapeutic use, Cosmetic Techniques, Neuromuscular Agents therapeutic use, Neurotoxins therapeutic use
- Published
- 2011
- Full Text
- View/download PDF
49. Future trends and new materials.
- Author
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Hoffmann JF
- Subjects
- Biocompatible Materials classification, Botulinum Toxins, Type A classification, Botulinum Toxins, Type A therapeutic use, Esthetics, Forecasting, Humans, Hyaluronic Acid classification, Hyaluronic Acid therapeutic use, Injections, Intradermal, Neuromuscular Agents classification, Neuromuscular Agents therapeutic use, Neurotransmitter Agents therapeutic use, Biocompatible Materials therapeutic use, Cosmetic Techniques trends, Face
- Abstract
The variety of products available as injectable fillers and neuromodulators continues to increase. New products are soon to be introduced in the United States that will enable the clinician to treat a greater array of esthetic problems and concerns. In addition, existing materials are being modified to allow for less painful treatments and easier product handling., (© Thieme Medical Publishers.)
- Published
- 2011
- Full Text
- View/download PDF
50. Quality of life in Brazil: normative values for the WHOQOL-bref in a southern general population sample.
- Author
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Cruz LN, Polanczyk CA, Camey SA, Hoffmann JF, and Fleck MP
- Subjects
- Adult, Brazil, Female, Health Status Indicators, Humans, Male, Middle Aged, Population Surveillance, Psychometrics, Young Adult, Quality of Life, Surveys and Questionnaires standards
- Abstract
Purpose: Normative data for WHOQOL-bref are scarce in the literature and unavailable in Latin American countries. The main objective of this study was to provide normative scores of WHOQOL-bref in a general population sample in Brazil and to describe differences in mean scores according to some socio-demographic characteristics., Methods: WHOQOL-bref was applied to a randomly selected sample of the general population of Porto Alegre. Participants were literate people aged 20 to 64 years. The questionnaires were self-administered in the presence of an interviewer in the respondent's home., Results: The response rate was 68%, and the final sample contained 751 respondents (38% men, 62% women). Low quality of life was observed in the following subgroups: female gender, lower economic class, lower educational level, and the subgroup reporting a chronic medical condition. The mean scores of the WHOQOL-bref and percentiles of scores are reported as normative data for the general population., Conclusion: Our results can be useful to researchers using the WHOQOL-bref to compare their results with normative data from a randomly selected sample of general population. Additionally, the ability of WHOQOL-bref to discriminate different population subgroups makes it an important tool to identify vulnerable groups in epidemiological surveys.
- Published
- 2011
- Full Text
- View/download PDF
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