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  1. Article ; Online: Immunomodulatory effects of vitamin D: implications for GVHD.

    Rosenblatt, J / Bissonnette, A / Ahmad, R / Wu, Z / Vasir, B / Stevenson, K / Zarwan, C / Keefe, W / Glotzbecker, B / Mills, H / Joyce, R / Levine, J D / Tzachanis, D / Boussiotis, V / Kufe, D / Avigan, D

    Bone marrow transplantation

    2010  Volume 45, Issue 9, Page(s) 1463–1468

    Abstract: ... allogeneic transplantation may decrease the risk of developing GVHD. Vitamin D is a hormone essential for calcium metabolism ... that shows immunomodulatory properties. We showed that correction of vitamin D deficiency appeared ... to mitigate manifestations of GVHD. In pre-clinical studies, we have shown that vitamin D inhibits DC ...

    Abstract GVHD remains a major source of morbidity and mortality after allogeneic BMT. GVHD is mediated by alloreactive T cells derived from the hematopoietic graft that target host tissues. Pre-clinical models have shown that presentation of alloantigens by host DCs results in the activation of donor-derived T cells that mediate GVHD. Strategies that interfere with the Ag-presenting capacity of DCs after allogeneic transplantation may decrease the risk of developing GVHD. Vitamin D is a hormone essential for calcium metabolism that shows immunomodulatory properties. We showed that correction of vitamin D deficiency appeared to mitigate manifestations of GVHD. In pre-clinical studies, we have shown that vitamin D inhibits DC maturation, polarizes T-cell populations toward the expression of Th2 as compared with Th1 cytokines, and blunts allogeneic T-cell proliferation in response to DC stimulation. Exposure to vitamin D resulted in increased expression of IDO, an enzyme responsible for tryptophan metabolism that is upregulated in tolerizing DCs. These data suggest that exposure to vitamin D results in immature DC populations that bias toward tolerizing rather than stimulatory T-cell populations. Vitamin D may therefore have a role in the prevention of GVHD.
    MeSH term(s) Cell Polarity/drug effects ; Cell Polarity/immunology ; Cells, Cultured ; Dendritic Cells/cytology ; Dendritic Cells/drug effects ; Dendritic Cells/immunology ; Graft vs Host Disease/drug therapy ; Graft vs Host Disease/immunology ; Hematopoietic Stem Cell Transplantation/adverse effects ; Humans ; Immunologic Factors/pharmacology ; Immunophenotyping ; Mitogens/pharmacology ; Signal Transduction/drug effects ; Signal Transduction/immunology ; T-Lymphocytes/cytology ; T-Lymphocytes/drug effects ; T-Lymphocytes/immunology ; Vitamin D/pharmacology
    Chemical Substances Immunologic Factors ; Mitogens ; Vitamin D (1406-16-2)
    Language English
    Publishing date 2010-01-18
    Publishing country England
    Document type Journal Article
    ZDB-ID 632854-4
    ISSN 1476-5365 ; 0268-3369 ; 0951-3078
    ISSN (online) 1476-5365
    ISSN 0268-3369 ; 0951-3078
    DOI 10.1038/bmt.2009.366
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Low levels of 25-hydroxyvitamin D before allogeneic hematopoietic SCT correlate with the development of chronic GVHD.

    Glotzbecker, B / Ho, V T / Aldridge, J / Kim, H T / Horowitz, G / Ritz, J / Soiffer, R / Avigan, D / Rosenblatt, J

    Bone marrow transplantation

    2013  Volume 48, Issue 4, Page(s) 593–597

    Abstract: Vitamin D, a hormone involved in bone and calcium homeostasis, has been shown to have potent ... immunomodulatory effects. We performed a retrospective cohort analysis to evaluate whether monohydroxyvitamin D ... who underwent myeloablative HSCT were studied. Vitamin D levels were measured in serum samples obtained ...

    Abstract Vitamin D, a hormone involved in bone and calcium homeostasis, has been shown to have potent immunomodulatory effects. We performed a retrospective cohort analysis to evaluate whether monohydroxyvitamin D levels before allogeneic hematopoietic SCT (HSCT) correlate with the risk of GVHD. Fifty-three patients who underwent myeloablative HSCT were studied. Vitamin D levels were measured in serum samples obtained before HSCT. The median 25-hydroxyvitamin vitamin D level was 21.9 ng/mL (7.8-45.7). The cumulative incidence (CI) of grades II-IV acute GVHD at 100 days was 53.1% in patients with vitamin D<25, versus 33.3% in patients with vitamin D ≥ 25 ng/mL (P=0.13). The CI of chronic GVHD (cGVHD) at 2 years in patients with vitamin D<25 was 63.8%, compared with 23.8% in patients with vitamin D ≥ 25 ng/mL (P=0.009). Similarly, the 2 year CI of extensive cGVHD was significantly greater in patients with vitamin D<25 compared with those with vitamin D ≥ 25 ng/mL (54.5% versus 14.3%, P=0.005). In a multivariable competing risk model, low pre-transplant vitamin D levels remained a significant factor associated with cGVHD (hazard ratio=5.26, P=0.02). Our results demonstrate that vitamin D deficiency before HSCT is associated with an increased risk of cGVHD.
    MeSH term(s) Acute Disease ; Adolescent ; Adult ; Chronic Disease ; Female ; Graft vs Host Disease/blood ; Graft vs Host Disease/epidemiology ; Graft vs Host Disease/etiology ; Humans ; Male ; Middle Aged ; Retrospective Studies ; Stem Cell Transplantation ; Time Factors ; Transplantation, Homologous ; Vitamin D/analogs & derivatives ; Vitamin D/blood
    Chemical Substances Vitamin D (1406-16-2) ; 25-hydroxyvitamin D (A288AR3C9H)
    Language English
    Publishing date 2013-04
    Publishing country England
    Document type Clinical Trial ; Comparative Study ; Journal Article ; Multicenter Study ; Research Support, N.I.H., Extramural
    ZDB-ID 632854-4
    ISSN 1476-5365 ; 0268-3369 ; 0951-3078
    ISSN (online) 1476-5365
    ISSN 0268-3369 ; 0951-3078
    DOI 10.1038/bmt.2012.177
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Vaccination as Immunotherapy in Hematologic Malignancies.

    Liegel, Jessica / Weinstock, Matthew / Rosenblatt, Jacalyn / Avigan, David

    Journal of clinical oncology : official journal of the American Society of Clinical Oncology

    2021  Volume 39, Issue 5, Page(s) 433–443

    MeSH term(s) Cancer Vaccines/therapeutic use ; Clinical Trials, Phase I as Topic ; Clinical Trials, Phase II as Topic ; Hematologic Neoplasms/immunology ; Hematologic Neoplasms/therapy ; Humans ; Randomized Controlled Trials as Topic ; Vaccination/methods
    Chemical Substances Cancer Vaccines
    Language English
    Publishing date 2021-01-12
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 604914-x
    ISSN 1527-7755 ; 0732-183X
    ISSN (online) 1527-7755
    ISSN 0732-183X
    DOI 10.1200/JCO.20.01706
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Cellular Immunotherapy for Multiple Myeloma.

    Rosenblatt, Jacalyn / Avigan, David

    Cancer journal (Sudbury, Mass.)

    2019  Volume 25, Issue 1, Page(s) 38–44

    Abstract: Cellular immunotherapy for myeloma has the unique potential both to potently kill the malignant clone and to evoke a memory response to protect from relapse. Understanding the complex interactions between the malignant clone and the microenvironment that ...

    Abstract Cellular immunotherapy for myeloma has the unique potential both to potently kill the malignant clone and to evoke a memory response to protect from relapse. Understanding the complex interactions between the malignant clone and the microenvironment that promote immune escape is critical to evoke effective antimyeloma immunity. Tremendous progress has been made in the area of cancer vaccines and adoptive T-cell therapy in recent years. Careful study of the mechanisms of response and of immune escape will be critical to developing novel combination therapies and ultimately to improve outcomes for patients with myeloma.
    MeSH term(s) Humans ; Immunotherapy/methods ; Multiple Myeloma/drug therapy
    Language English
    Publishing date 2019-01-14
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 2018400-1
    ISSN 1540-336X ; 1528-9117 ; 1081-4442
    ISSN (online) 1540-336X
    ISSN 1528-9117 ; 1081-4442
    DOI 10.1097/PPO.0000000000000356
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Flexible spatial learning requires both the dorsal and ventral hippocampus and their functional interactions with the prefrontal cortex.

    Avigan, Philip D / Cammack, Katharine / Shapiro, Matthew L

    Hippocampus

    2020  Volume 30, Issue 7, Page(s) 733–744

    Abstract: When faced with changing contingencies, animals can use memory to flexibly guide actions, engaging both frontal and temporal lobe brain structures. Damage to the hippocampus (HPC) impairs episodic memory, and damage to the prefrontal cortex (PFC) impairs ...

    Abstract When faced with changing contingencies, animals can use memory to flexibly guide actions, engaging both frontal and temporal lobe brain structures. Damage to the hippocampus (HPC) impairs episodic memory, and damage to the prefrontal cortex (PFC) impairs cognitive flexibility, but the circuit mechanisms by which these areas support flexible memory processing remain unclear. The present study investigated these mechanisms by temporarily inactivating the medial PFC (mPFC), the dorsal HPC (dHPC), and the ventral HPC (vHPC), individually and in combination, as rats learned spatial discriminations and reversals in a plus maze. Bilateral inactivation of either the dHPC or vHPC profoundly impaired spatial learning and memory, whereas bilateral mPFC inactivation primarily impaired reversal versus discrimination learning. Inactivation of unilateral mPFC together with the contralateral dHPC or vHPC impaired spatial discrimination and reversal learning, whereas ipsilateral inactivation did not. Flexible spatial learning thus depends on both the dHPC and vHPC and their functional interactions with the mPFC.
    MeSH term(s) Animals ; Hippocampus/physiology ; Male ; Nerve Net/physiology ; Prefrontal Cortex/physiology ; Rats ; Rats, Long-Evans ; Reversal Learning/physiology ; Spatial Learning/physiology
    Language English
    Publishing date 2020-02-20
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 1074352-2
    ISSN 1098-1063 ; 1050-9631
    ISSN (online) 1098-1063
    ISSN 1050-9631
    DOI 10.1002/hipo.23198
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Vaccine therapy in hematologic malignancies.

    Avigan, David / Rosenblatt, Jacalyn

    Blood

    2018  Volume 131, Issue 24, Page(s) 2640–2650

    Abstract: Immune-based therapy has emerged as a paradigm shift in cancer therapy with dramatic responses observed in previously incurable disease. Cancer vaccines are being developed to disrupt tumor-associated tolerance and activate and selectively expand tumor- ... ...

    Abstract Immune-based therapy has emerged as a paradigm shift in cancer therapy with dramatic responses observed in previously incurable disease. Cancer vaccines are being developed to disrupt tumor-associated tolerance and activate and selectively expand tumor-specific lymphocytes within the native effector cell repertoire while maintaining immune-regulatory protection against autoimmunity. Although individual antigen approaches result in immune response with a suggestion of clinical effect in some settings, broader efficacy may be dependent on presentation of multiple antigens that capture clonal diversity presented in the context of functionally potent antigen-presenting cells. The use of whole cell-based strategies such as dendritic cell/tumor fusions have yielded provocative results in single-arm studies and are currently being explored in multicenter randomized trials. The posttransplant setting is a potentially promising platform for vaccination due to cytoreduction and relative depletion of inhibitory accessory cells fostering greater immune responsiveness. Integration of these efforts with other immunotherapeutic strategies and agents that target the tumor microenvironment is being studied in an effort to generate durable immunologic responses with clinically meaningful impact on disease.
    MeSH term(s) Animals ; Antigen-Presenting Cells/immunology ; Cancer Vaccines/immunology ; Cancer Vaccines/therapeutic use ; Hematologic Neoplasms/immunology ; Hematologic Neoplasms/therapy ; Humans ; Immunomodulation ; Immunotherapy, Active/methods ; Lymphocyte Activation ; T-Lymphocytes/immunology ; Tumor Microenvironment
    Chemical Substances Cancer Vaccines
    Language English
    Publishing date 2018-05-04
    Publishing country United States
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 80069-7
    ISSN 1528-0020 ; 0006-4971
    ISSN (online) 1528-0020
    ISSN 0006-4971
    DOI 10.1182/blood-2017-11-785873
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Updated COVID-19 clearance time among patients with cancer in the Delta and Omicron waves.

    Avigan, Zachary M / Paredes, Rodrigo / Boussi, Leora S / Lam, Barbara D / Shea, Meghan E / Weinstock, Matthew J / Peters, Mary Linton B

    Cancer medicine

    2023  Volume 12, Issue 16, Page(s) 16869–16875

    Abstract: Background: COVID-19 infection delays therapy and in-person evaluation for oncology patients, but clinic clearance criteria are not clearly defined.: Methods: We conducted a retrospective review of oncology patients with COVID-19 at a tertiary care ... ...

    Abstract Background: COVID-19 infection delays therapy and in-person evaluation for oncology patients, but clinic clearance criteria are not clearly defined.
    Methods: We conducted a retrospective review of oncology patients with COVID-19 at a tertiary care center during the Delta and Omicron waves and compared clearance strategies.
    Results: Median clearance by two consecutive negative tests was 32.0 days (Interquartile Range [IQR] 22.0-42.5, n = 153) and was prolonged in hematologic malignancy versus solid tumors (35.0 days for hematologic malignancy, 27.5 days for solid tumors, p = 0.01) and in patients receiving B-cell depletion versus other therapies. Median clearance by single negative test was reduced to 23.0 days (IQR 16.0-33.0), with recurrent positive rate 25.4% in hematologic malignancy versus 10.6% in solid tumors (p = 0.02). Clearance by a predefined waiting period required 41 days until an 80% negative rate.
    Conclusions: COVID-19 clearance remains prolonged in oncology patients. Single-negative test clearance can balance delays in care with risk of infection in patients with solid tumors.
    MeSH term(s) Humans ; COVID-19 ; Neoplasms/complications ; Hematologic Neoplasms ; Medical Oncology ; B-Lymphocytes
    Language English
    Publishing date 2023-07-01
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural
    ZDB-ID 2659751-2
    ISSN 2045-7634 ; 2045-7634
    ISSN (online) 2045-7634
    ISSN 2045-7634
    DOI 10.1002/cam4.6311
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Acute Cholecystitis Associated With the Use of Glucagon-Like Peptide-1 Receptor Agonists Reported to the US Food and Drug Administration.

    Woronow, Daniel / Chamberlain, Christine / Niak, Ali / Avigan, Mark / Houstoun, Monika / Kortepeter, Cindy

    JAMA internal medicine

    2022  Volume 182, Issue 10, Page(s) 1104–1106

    MeSH term(s) Cholecystitis, Acute ; Diabetes Mellitus, Type 2 ; Glucagon-Like Peptide 1/agonists ; Glucagon-Like Peptide-1 Receptor/agonists ; Humans ; Hypoglycemic Agents/adverse effects ; United States ; United States Food and Drug Administration
    Chemical Substances Glucagon-Like Peptide-1 Receptor ; Hypoglycemic Agents ; Glucagon-Like Peptide 1 (89750-14-1)
    Language English
    Publishing date 2022-08-25
    Publishing country United States
    Document type Journal Article
    ZDB-ID 2699338-7
    ISSN 2168-6114 ; 2168-6106
    ISSN (online) 2168-6114
    ISSN 2168-6106
    DOI 10.1001/jamainternmed.2022.3810
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  9. Article ; Online: Effect of an obesogenic high-fat and high-sucrose diet on hepatic gene expression signatures in male Collaborative Cross mice.

    Tryndyak, Volodymyr P / Willett, Rose A / Nagumalli, Suresh K / Li, Dan / Avigan, Mark I / Beland, Frederick A / Rusyn, Ivan / Pogribny, Igor P

    American journal of physiology. Gastrointestinal and liver physiology

    2023  Volume 324, Issue 3, Page(s) G232–G243

    Abstract: Nonalcoholic fatty liver disease (NAFLD), the most prevalent chronic liver disease, is characterized by substantial variations in case-level severity. In this study, we used a genetically diverse Collaborative Cross (CC) mouse population model to analyze ...

    Abstract Nonalcoholic fatty liver disease (NAFLD), the most prevalent chronic liver disease, is characterized by substantial variations in case-level severity. In this study, we used a genetically diverse Collaborative Cross (CC) mouse population model to analyze the global transcriptome and clarify the molecular mechanisms involved in hepatic fat accumulation that determine the level and severity of NAFLD. Twenty-four strains of male CC mice were maintained on a high-fat/high-sucrose (HF/HS) diet for 12 wk, and their hepatic gene expression profiles were determined by next-generation RNA sequencing. We found that the development of the nonalcoholic fatty liver (NAFL) phenotype in CC mice coincided with significant changes in the expression of hepatic genes at the population level, evidenced by the presence of 724 differentially expressed genes involved in lipid and carbohydrate metabolism, cell morphology, vitamin and mineral metabolism, energy production, and DNA replication, recombination, and repair. Importantly, expression of 68 of these genes strongly correlated with the extent of hepatic lipid accumulation in the overall population of HF/HS diet-fed male CC mice. Results of partial least squares (PLS) modeling showed that these derived hepatic gene expression signatures help to identify the individual mouse strains that are highly susceptible to the development of NAFLD induced by an HF/HS diet. These findings imply that gene expression profiling, combined with a PLS modeling approach, may be a useful tool to predict NAFLD severity in genetically diverse patient populations.
    MeSH term(s) Male ; Humans ; Mice ; Animals ; Non-alcoholic Fatty Liver Disease/metabolism ; Transcriptome ; Collaborative Cross Mice/genetics ; Sucrose/metabolism ; Liver/metabolism ; Diet, High-Fat ; Lipids ; Mice, Inbred C57BL ; Lipid Metabolism
    Chemical Substances Sucrose (57-50-1) ; Lipids
    Language English
    Publishing date 2023-01-10
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, U.S. Gov't, P.H.S.
    ZDB-ID 603840-2
    ISSN 1522-1547 ; 0193-1857
    ISSN (online) 1522-1547
    ISSN 0193-1857
    DOI 10.1152/ajpgi.00225.2022
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Amiodarone and Dronedarone Causes Liver Injury with Distinctly Different Clinical Presentations.

    Pop, Alexander / Halegoua-DeMarzio, Dina / Barnhart, Huiman / Kleiner, David / Avigan, Mark / Gu, Jiezhun / Chalasani, Naga / Ahmad, Jawad / Fontana, Robert J / Lee, William / Barritt, A Sidney / Durazo, Francisco / Hayashi, Paul H / Navarro, Victor J

    Digestive diseases and sciences

    2024  Volume 69, Issue 4, Page(s) 1479–1487

    Abstract: Objective: To describe hepatotoxicity due to amiodarone and dronedarone from the DILIN and the US FDA's surveillance database.: Methods: Hepatotoxicity due to amiodarone and dronedarone enrolled in the U.S. Drug Induced Liver Injury Network (DILIN) ... ...

    Abstract Objective: To describe hepatotoxicity due to amiodarone and dronedarone from the DILIN and the US FDA's surveillance database.
    Methods: Hepatotoxicity due to amiodarone and dronedarone enrolled in the U.S. Drug Induced Liver Injury Network (DILIN) from 2004 to 2020 are described. Dronedarone hepatotoxicity cases associated with liver biopsy results were obtained from the FDA Adverse Event Reporting System (FAERS) from 2009 to 2020.
    Results: Among DILIN's 10 amiodarone and 3 dronedarone DILIN cases, the latency for amiodarone was longer than with dronedarone (388 vs 119 days, p = 0.50) and the median ALT at DILI onset was significantly lower with amiodarone (118 vs 1191 U/L, p = 0.05). Liver biopsies in five amiodarone cases showed fibrosis, steatosis, and numerous Mallory-Denk bodies. Five patients died although only one from liver failure. One patient with dronedarone induced liver injury died of a non-liver related cause. Nine additional cases of DILI due to dronedarone requiring hospitalization were identified in the FAERS database. Three patients developed liver injury within a month of starting the medication. Two developed acute liver failure and underwent urgent liver transplant, one was evaluated for liver transplant but then recovered spontaneously, while one patient with cirrhosis died of liver related causes.
    Conclusion: Amiodarone hepatotoxicity resembles that seen in alcohol related liver injury, with fatty infiltration and inflammation. Dronedarone is less predictable, typically without fat and with a shorter latency of use before presentation. These differences may be explained, in part, by the differing pharmacokinetics of the two drugs leading to different mechanisms of hepatotoxicity.
    MeSH term(s) Humans ; Dronedarone ; Amiodarone/adverse effects ; Amiodarone/pharmacokinetics ; Anti-Arrhythmia Agents/adverse effects ; Anti-Arrhythmia Agents/pharmacokinetics ; Dyphylline ; Chemical and Drug Induced Liver Injury
    Chemical Substances Dronedarone (JQZ1L091Y2) ; Amiodarone (N3RQ532IUT) ; Anti-Arrhythmia Agents ; Dyphylline (263T0E9RR9)
    Language English
    Publishing date 2024-02-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 304250-9
    ISSN 1573-2568 ; 0163-2116
    ISSN (online) 1573-2568
    ISSN 0163-2116
    DOI 10.1007/s10620-023-08251-2
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