LIVIVO - The Search Portal for Life Sciences

zur deutschen Oberfläche wechseln
Advanced search

Search results

Result 1 - 10 of total 109

Search options

  1. Article ; Online: Effect of fibers from bracts of maize (Zea mays) as natural additives in wheat bread-making: a technological approach

    Bernhardt, D. C. / Castelli, M. V. / Arqueros, V. / Gerschenson, L. N. / Fissore, E. N. / Rojas, A. M.

    Food Measure. 2022 Oct., v. 16, no. 5 p.4036-4049

    2022  

    Abstract: Bracts of maize (Zea mays, L.), a large agro-industrial residue and a source of functional ...

    Abstract Bracts of maize (Zea mays, L.), a large agro-industrial residue and a source of functional biopolymers, were evaluated as a source of additives in bread-making. After drying and milling, the dried powder obtained (BP), its alcohol insoluble residue (AIR: ~70% yield on BP; composed by 26% arabinoxylans, 26% cellulose, 7% lignin, 5.5% pectins), and the ferulate-crosslinked arabinoxylans (AX-OH) isolated by 4%-KOH treatment from AIR, were evaluated. Bread loaves were made by replacing the wheat flour in 1.5% (w/w) by each fraction, applying two elaboration methodologies: required and constant hydration. Doughs’ thermomechanical behavior during kneading showed that the rheological properties and water availability were affected within both methodologies of bread making. The major effect was noted in the formulation with the fiber enriched in arabinoxylans (AX-OH) when added at required hydration. The hydration percentage tended to increase with the enrichment in arabinoxylans, varying from 58.7% in the dough made without wheat flour replacement, to 62% in AX-OH dough, with the highest content of hemicellulose. Dough stability and protein weakening were the most influenced parameters, mainly owing to AX-OH fibers, suggesting that they interfered the water distribution and hence the gluten network formation. As expected, fibers’ addition decreased the specific volume of bread, while firmness analysis showed that all maize fibers also delayed bread aging at required hydration, probably by hindering the diffusion of water and, hence, leading to starch retrogradation delay. Fibers from maize bracts can be a source of biopolymers useful as natural additives in bakery products.
    Keywords Zea mays ; alcohols ; arabinoxylan ; biopolymers ; breadmaking ; breads ; cellulose ; corn ; dough ; firmness ; gluten ; hemicellulose ; lignin ; retrogradation ; water distribution ; wheat ; wheat flour
    Language English
    Dates of publication 2022-10
    Size p. 4036-4049.
    Publishing place Springer US
    Document type Article ; Online
    ZDB-ID 2754612-3
    ISSN 2193-4134 ; 2193-4126
    ISSN (online) 2193-4134
    ISSN 2193-4126
    DOI 10.1007/s11694-022-01490-3
    Database NAL-Catalogue (AGRICOLA)

    More links

    Kategorien

  2. Article ; Online: Perinatally acquired HIV infection is associated with abnormal blood mitochondrial function during childhood/adolescence.

    Jao, Jennifer / Jacobson, Denise L / Russell, Jonathan S / Wang, Jiajia / Yu, Wendy / Gojanovich, Greg S / Siminski, Sue / Hyzy, Laurie / Geffner, Mitchell E / Gerschenson, Mariana

    AIDS (London, England)

    2021  Volume 35, Issue 9, Page(s) 1385–1394

    Abstract: Objective: We assessed differences in mitochondrial function between youth living with perinatal HIV (YPHIV) and youth perinatally HIV-exposed but uninfected (YPHEU).: Design: Cross-sectional analysis.: Methods: We measured lactate and pyruvate ... ...

    Abstract Objective: We assessed differences in mitochondrial function between youth living with perinatal HIV (YPHIV) and youth perinatally HIV-exposed but uninfected (YPHEU).
    Design: Cross-sectional analysis.
    Methods: We measured lactate and pyruvate values, as well as mitochondrial Complex I and Complex IV activity in peripheral blood mononuclear cells. Logistic or linear regression models were fit, as appropriate, to assess the association between PHIV status and each mitochondrial parameter, adjusted for confounders. We introduced interaction terms to assess effect modification of PHIV status on the relationship between anthropometric factors and each mitochondrial parameter. Among YPHIV, similar regression models were fit to assess the relationship between HIV-associated factors and each mitochondrial outcome.
    Results: A total of 243 YPHIV and 118 YPHEU were compared. On average, YPHIV had higher lactate/pyruvate ratio (β: 7.511, 95% confidence interval [95% CI]: 0.402, 14.620) and Complex IV activity (β: 0.037, 95% CI: 0.002, 0.072) compared to YPHEU, adjusted for confounders. Among YPHIV, body mass index Z score (BMIZ) and Complex I activity were inversely associated, whereas, among YPHEU, there was a positive association (β for interaction: -0.048, P = 0.003). Among YPHIV, current (β: -0.789, 95% CI: -1.174, -0.404) and nadir CD4+% (β: -0.605, 95% CI: -1.086, -0.125) were inversely associated with lactate/pyruvate ratio; higher current (4.491, 95% CI: 0.754, 8.229) and peak (7.978, 95% CI: 1.499, 14.457) HIV RNA levels were positively associated with lactate/pyruvate ratio in adjusted models.
    Conclusions: Mitochondrial function and substrate utilization appear perturbed in YPHIV compared to YPHEU. Increasing immunosuppression and viremia are associated with mitochondrial dysfunction among YPHIV.
    MeSH term(s) Adolescent ; Cross-Sectional Studies ; Diagnostic Tests, Routine ; Female ; HIV Infections/complications ; Humans ; Infectious Disease Transmission, Vertical ; Leukocytes, Mononuclear ; Mitochondria ; Pregnancy
    Language English
    Publishing date 2021-02-26
    Publishing country England
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 639076-6
    ISSN 1473-5571 ; 0269-9370 ; 1350-2840
    ISSN (online) 1473-5571
    ISSN 0269-9370 ; 1350-2840
    DOI 10.1097/QAD.0000000000002884
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  3. Article ; Online: Associations of FGF21 and GDF15 with mitochondrial dysfunction in children living with perinatally-acquired HIV: A cross-sectional evaluation of pediatric AIDS clinical trials group 219/219C.

    Gojanovich, Greg S / Jacobson, Denise L / Broadwell, Carly / Karalius, Brad / Kirmse, Brian / Geffner, Mitchell E / Jao, Jennifer / Van Dyke, Russell B / McFarland, Elizabeth J / Silio, Margarita / Crain, Marilyn / Gerschenson, Mariana

    PloS one

    2021  Volume 16, Issue 12, Page(s) e0261563

    Abstract: Background: In persons living with HIV, mitochondrial disease (MD) is difficult to diagnose, as clinical signs are non-specific with inconsistent patterns. Fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15) are mitokines ... ...

    Abstract Background: In persons living with HIV, mitochondrial disease (MD) is difficult to diagnose, as clinical signs are non-specific with inconsistent patterns. Fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15) are mitokines elevated in MD patients without HIV, and associated with cardiometabolic comorbidities in adults living with HIV. We assessed relationships of these biomarkers with MD in children living with perinatally-acquired HIV infection (CPHIV).
    Setting: Cross-sectional study of CPHIV from Pediatric ACTG 219/219C classified by Mitochondrial Disease Criteria (MDC) that defines scores 2-4 as "possible" MD.
    Methods: Each case with MDC equaling 4 (MDC4; n = 23) was matched to one randomly selected control displaying no MDC (MDC0; n = 23) based on calendar date. Unmatched cases with MDC equaling 3 (MDC3; n = 71) were also assessed. Plasma samples proximal to diagnoses were assayed by ELISA. Mitokine distributions were compared using Wilcoxon tests, Spearman correlations were calculated, and associations with MD status were assessed by conditional logistic regression.
    Results: Median FGF21 and GDF15 concentrations, respectively, were highest in MDC4 (143.9 and 1441.1 pg/mL), then MDC3 (104.0 and 726.5 pg/mL), and lowest in controls (89.4 and 484.7 pg/mL). Distributions of FGF21 (paired Wilcoxon rank sum p = 0.002) and GDF15 (paired Wilcoxon rank sum p<0.001) differed in MDC4 vs MDC0. Mitokine concentrations were correlated across all participants (r = 0.33; p<0.001). Unadjusted odds ratios of being MDC4 vs MDC0 were 5.2 [95% confidence interval (CI): 1.06-25.92] for FGF21 and 3.5 (95%CI: 1.19-10.25) for GDF15. Relationships persisted after covariate adjustments.
    Conclusion: FGF21 and GDF15 levels may be useful biomarkers to screen for CPHIV with mitochondrial dysfunction.
    MeSH term(s) Adolescent ; Anti-Retroviral Agents/adverse effects ; Anti-Retroviral Agents/therapeutic use ; Biomarkers/metabolism ; Child ; Child, Preschool ; Cross-Sectional Studies ; Cytokines/metabolism ; Enzyme-Linked Immunosorbent Assay ; Female ; Fibroblast Growth Factors/biosynthesis ; Fibroblast Growth Factors/genetics ; Follow-Up Studies ; Growth Differentiation Factor 15/biosynthesis ; Growth Differentiation Factor 15/genetics ; HIV Infections/complications ; HIV Infections/etiology ; HIV Infections/metabolism ; Humans ; Infant ; Male ; Mitochondria/metabolism ; Mitochondrial Diseases/complications ; Mitochondrial Diseases/diagnosis ; Mitochondrial Diseases/metabolism ; Regression Analysis ; Risk ; Young Adult
    Chemical Substances Anti-Retroviral Agents ; Biomarkers ; Cytokines ; FGF21 protein, human ; GDF15 protein, human ; Growth Differentiation Factor 15 ; Fibroblast Growth Factors (62031-54-3)
    Language English
    Publishing date 2021-12-31
    Publishing country United States
    Document type Journal Article ; Multicenter Study ; Observational Study ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2267670-3
    ISSN 1932-6203 ; 1932-6203
    ISSN (online) 1932-6203
    ISSN 1932-6203
    DOI 10.1371/journal.pone.0261563
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  4. Article: Gelling pectins from carrot leftovers extracted by industrial-enzymes with ultrasound pretreatment

    Idrovo Encalada, A. M. / Pérez, C. D. / Gerschenson, L. N. / Rojas, A. M. / Fissore, E. N.

    LWT - food science and technology

    2019  Volume 111, Issue -, Page(s) 640

    Language English
    Document type Article
    ZDB-ID 2169058-3
    ISSN 0023-6438
    Database Current Contents Nutrition, Environment, Agriculture

    More links

    Kategorien

  5. Article ; Online: Mitochondrial Dysfunction and Insulin Resistance in Pubertal Youth Living with Perinatally Acquired HIV.

    Gojanovich, Greg S / Jacobson, Denise L / Jao, Jennifer / Russell, Jonathan S / Van Dyke, Russell B / Libutti, Daniel E / Sharma, Tanvi S / Geffner, Mitchell E / Gerschenson, Mariana

    AIDS research and human retroviruses

    2020  Volume 36, Issue 9, Page(s) 703–711

    Abstract: Mitochondrial dysfunction (MD) is linked to cardiometabolic complications, such as obesity and insulin resistance (IR), the frequencies of which are higher in adults living with HIV infection and receiving combination antiretroviral therapies (ARV). ARV- ... ...

    Abstract Mitochondrial dysfunction (MD) is linked to cardiometabolic complications, such as obesity and insulin resistance (IR), the frequencies of which are higher in adults living with HIV infection and receiving combination antiretroviral therapies (ARV). ARV-treated youth living with perinatally acquired HIV infection (YLPHIV) may be especially susceptible to IR due to long-term exposure to both factors. Medical histories, fasting blood chemistry panels, and mitochondrial function in banked peripheral blood mononuclear cells (PBMCs) were assessed in eligible YLPHIV from the Pediatric HIV/AIDS Cohort Study (PHACS)/Adolescent Master Protocol (AMP) Mitochondrial Determinants Component cohort, stratified by Homeostatic Model Assessment of IR (HOMA-IR) score: case (score ≥4,
    MeSH term(s) Adolescent ; Child ; Cohort Studies ; HIV Infections ; Humans ; Insulin Resistance ; Leukocytes, Mononuclear ; Mitochondria
    Language English
    Publishing date 2020-07-20
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 639130-8
    ISSN 1931-8405 ; 0889-2229
    ISSN (online) 1931-8405
    ISSN 0889-2229
    DOI 10.1089/AID.2020.0067
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  6. Article ; Online: Upregulated ethanolamine phospholipid synthesis via selenoprotein I is required for effective metabolic reprogramming during T cell activation.

    Ma, Chi / Hoffmann, FuKun W / Marciel, Michael P / Page, Kathleen E / Williams-Aduja, Melodie A / Akana, Ellis N L / Gojanovich, Greg S / Gerschenson, Mariana / Urschitz, Johann / Moisyadi, Stefan / Khadka, Vedbar S / Rozovsky, Sharon / Deng, Youping / Horgen, F David / Hoffmann, Peter R

    Molecular metabolism

    2021  Volume 47, Page(s) 101170

    Abstract: Objective: T cell activation triggers metabolic reprogramming to meet increased demands for energy and metabolites required for cellular proliferation. Ethanolamine phospholipid synthesis has emerged as a regulator of metabolic shifts in stem cells and ... ...

    Abstract Objective: T cell activation triggers metabolic reprogramming to meet increased demands for energy and metabolites required for cellular proliferation. Ethanolamine phospholipid synthesis has emerged as a regulator of metabolic shifts in stem cells and cancer cells, which led us to investigate its potential role during T cell activation.
    Methods: As selenoprotein I (SELENOI) is an enzyme participating in two metabolic pathways for the synthesis of phosphatidylethanolamine (PE) and plasmenyl PE, we generated SELENOI-deficient mouse models to determine loss-of-function effects on metabolic reprogramming during T cell activation. Ex vivo and in vivo assays were carried out along with metabolomic, transcriptomic, and protein analyses to determine the role of SELENOI and the ethanolamine phospholipids synthesized by this enzyme in cell signaling and metabolic pathways that promote T cell activation and proliferation.
    Results: SELENOI knockout (KO) in mouse T cells led to reduced de novo synthesis of PE and plasmenyl PE during activation and impaired proliferation. SELENOI KO did not affect T cell receptor signaling, but reduced activation of the metabolic sensor AMPK. AMPK was inhibited by high [ATP], consistent with results showing SELENOI KO causing ATP accumulation, along with disrupted metabolic pathways and reduced glycosylphosphatidylinositol (GPI) anchor synthesis/attachment CONCLUSIONS: T cell activation upregulates SELENOI-dependent PE and plasmenyl PE synthesis as a key component of metabolic reprogramming and proliferation.
    MeSH term(s) Animals ; Cell Proliferation ; Ethanolamine/metabolism ; Ethanolamines/metabolism ; Female ; Glycolysis ; Glycosylphosphatidylinositols/metabolism ; Lipogenesis/genetics ; Lipogenesis/physiology ; Male ; Metabolic Networks and Pathways ; Metabolomics ; Mice ; Mice, Knockout ; Phosphatidylethanolamines/metabolism ; Phospholipids/biosynthesis ; Selenoproteins/deficiency ; Selenoproteins/genetics ; Selenoproteins/metabolism ; T-Lymphocytes/metabolism
    Chemical Substances Ethanolamines ; Glycosylphosphatidylinositols ; Phosphatidylethanolamines ; Phospholipids ; Selenoproteins ; phosphatidylethanolamine (39382-08-6) ; Ethanolamine (5KV86114PT)
    Language English
    Publishing date 2021-01-20
    Publishing country Germany
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2708735-9
    ISSN 2212-8778 ; 2212-8778
    ISSN (online) 2212-8778
    ISSN 2212-8778
    DOI 10.1016/j.molmet.2021.101170
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  7. Article ; Online: Insulin resistance in HIV-infected youth is associated with decreased mitochondrial respiration.

    Takemoto, Jody K / Miller, Tracie L / Wang, Jiajia / Jacobson, Denise L / Geffner, Mitchell E / Van Dyke, Russell B / Gerschenson, Mariana

    AIDS (London, England)

    2017  Volume 31, Issue 1, Page(s) 15–23

    Abstract: Objective: To identify relationships between insulin resistance (IR) and mitochondrial respiration in perinatally HIV-infected youth.: Design: Case-control study.: Methods: Mitochondrial respiration was assessed in perinatally HIV-infected youth ... ...

    Abstract Objective: To identify relationships between insulin resistance (IR) and mitochondrial respiration in perinatally HIV-infected youth.
    Design: Case-control study.
    Methods: Mitochondrial respiration was assessed in perinatally HIV-infected youth in Tanner stages 2-5, 25 youth with IR (IR+) and 50 without IR (IR-) who were enrolled in the Pediatric HIV/AIDS Cohort Study. IR was defined as a homeostatic model of assessment for IR value at least 4.0. A novel, high-throughput oximetry method was used to evaluate cellular respiration in peripheral blood mononuclear cells. Unadjusted and adjusted differences in mitochondrial respiration markers between IR+ and IR- were evaluated, as were correlations between mitochondrial respiration markers and biochemical measurements.
    Results: IR+ and IR- youth were similar on age, sex, and race/ethnicity. Mean age was 16.5 and 15.6 years in IR+ and IR-, respectively. The IR+ group had significantly higher mean BMI and metabolic analytes (fasting glucose, insulin, cholesterol, triglycerides, and venous lactate and pyruvate) compared with the IR-. Mitochondrial respiration markers were, on average, lower in the IR+ compared with IR-, including basal respiration (417.5 vs. 597.5 pmol, P = 0.074), ATP production (11 513 vs. 15 202 pmol, P = 0.078), proton leak (584.6 vs. 790.0 pmol, P = 0.033), maximal respiration (1815 vs. 2399 pmol, P = 0.025), and spare respiration capacity (1162 vs. 2017 pmol, P = 0.032). Nonmitochondrial respiration did not differ by IR status. The results did not change when adjusted for age.
    Conclusion: HIV-infected youth with IR have lower mitochondrial respiration markers when compared to youth without IR. Disordered mitochondrial respiration may be a potential mechanism for IR in this population.
    Language English
    Publishing date 2017-01-02
    Publishing country England
    Document type Journal Article
    ZDB-ID 639076-6
    ISSN 1473-5571 ; 0269-9370 ; 1350-2840
    ISSN (online) 1473-5571
    ISSN 0269-9370 ; 1350-2840
    DOI 10.1097/QAD.0000000000001299
    Database MEDical Literature Analysis and Retrieval System OnLINE

    More links

    Kategorien

  8. Book ; Conference proceedings: Gene Expression and carcinogenesis in cultured liver

    Gerschenson, L. E. / Thompson, Edward Bradbridge

    [proceedings of an internat. symposium held at the Univ. of California, Los Angeles] ; [Los Angeles, California, May 8 - 10, 1974]

    1975  

    Author's details ed. by L. E. Gerschenson ; E[dward] Brad[bridge] Thompson
    Language English
    Size XV, 495 S. ; 8-o
    Publisher Acad. Pr
    Publishing place New York u.a.
    Publishing country United States
    Document type Book ; Conference proceedings
    HBZ-ID HT008765955
    Database Catalogue ZB MED Medicine, Health

    Kategorien

  9. Article: Rheological performance of pectin-enriched products isolated from red beet (Beta vulgaris L. var. conditiva) through alkaline and enzymatic treatments

    Fissore, E. N. / Rojas, A. M. / Gerschenson, L. N.

    Food hydrocolloids

    2012  Volume 26, Issue 1, Page(s) 249

    Language English
    Document type Article
    ZDB-ID 742742-6
    ISSN 0268-005X
    Database Current Contents Nutrition, Environment, Agriculture

    More links

    Kategorien

  10. Article ; Online: Associations of FGF21 and GDF15 with mitochondrial dysfunction in children living with perinatally-acquired HIV

    Greg S Gojanovich / Denise L Jacobson / Carly Broadwell / Brad Karalius / Brian Kirmse / Mitchell E Geffner / Jennifer Jao / Russell B Van Dyke / Elizabeth J McFarland / Margarita Silio / Marilyn Crain / Mariana Gerschenson / Pediatric HIV/AIDS Cohort Study

    PLoS ONE, Vol 16, Iss 12, p e

    A cross-sectional evaluation of pediatric AIDS clinical trials group 219/219C.

    2021  Volume 0261563

    Abstract: Background In persons living with HIV, mitochondrial disease (MD) is difficult to diagnose, as clinical signs are non-specific with inconsistent patterns. Fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15) are mitokines ... ...

    Abstract Background In persons living with HIV, mitochondrial disease (MD) is difficult to diagnose, as clinical signs are non-specific with inconsistent patterns. Fibroblast growth factor 21 (FGF21) and growth differentiation factor 15 (GDF15) are mitokines elevated in MD patients without HIV, and associated with cardiometabolic comorbidities in adults living with HIV. We assessed relationships of these biomarkers with MD in children living with perinatally-acquired HIV infection (CPHIV). Setting Cross-sectional study of CPHIV from Pediatric ACTG 219/219C classified by Mitochondrial Disease Criteria (MDC) that defines scores 2-4 as "possible" MD. Methods Each case with MDC equaling 4 (MDC4; n = 23) was matched to one randomly selected control displaying no MDC (MDC0; n = 23) based on calendar date. Unmatched cases with MDC equaling 3 (MDC3; n = 71) were also assessed. Plasma samples proximal to diagnoses were assayed by ELISA. Mitokine distributions were compared using Wilcoxon tests, Spearman correlations were calculated, and associations with MD status were assessed by conditional logistic regression. Results Median FGF21 and GDF15 concentrations, respectively, were highest in MDC4 (143.9 and 1441.1 pg/mL), then MDC3 (104.0 and 726.5 pg/mL), and lowest in controls (89.4 and 484.7 pg/mL). Distributions of FGF21 (paired Wilcoxon rank sum p = 0.002) and GDF15 (paired Wilcoxon rank sum p<0.001) differed in MDC4 vs MDC0. Mitokine concentrations were correlated across all participants (r = 0.33; p<0.001). Unadjusted odds ratios of being MDC4 vs MDC0 were 5.2 [95% confidence interval (CI): 1.06-25.92] for FGF21 and 3.5 (95%CI: 1.19-10.25) for GDF15. Relationships persisted after covariate adjustments. Conclusion FGF21 and GDF15 levels may be useful biomarkers to screen for CPHIV with mitochondrial dysfunction.
    Keywords Medicine ; R ; Science ; Q
    Subject code 610
    Language English
    Publishing date 2021-01-01T00:00:00Z
    Publisher Public Library of Science (PLoS)
    Document type Article ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

    More links

    Kategorien

To top