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  1. Article ; Online: The good and bad of adipose tissue macrophage exosomes in obesity.

    Greenberg, Andrew S / Reeves, Andrew R

    Cell metabolism

    2021  Volume 33, Issue 4, Page(s) 700–702

    Abstract: Adipose tissue macrophages regulate adipose tissue inflammation and systemic insulin-glucose homeostasis. In a recent study by Ying et al. (2021), M2 polarized bone marrow-derived macrophages secreted exosomes containing miR-690 that, when administered ... ...

    Abstract Adipose tissue macrophages regulate adipose tissue inflammation and systemic insulin-glucose homeostasis. In a recent study by Ying et al. (2021), M2 polarized bone marrow-derived macrophages secreted exosomes containing miR-690 that, when administered to obese mice, improved glucose-insulin homeostasis. miR-690 reduced expression of Nadk, which decreased inflammation and improved insulin signaling.
    MeSH term(s) Adipose Tissue ; Animals ; Exosomes ; Inflammation ; Insulin Resistance ; Macrophages ; Mice ; Mice, Inbred C57BL ; MicroRNAs/genetics ; Obesity
    Chemical Substances MicroRNAs
    Language English
    Publishing date 2021-04-07
    Publishing country United States
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Comment
    ZDB-ID 2176834-1
    ISSN 1932-7420 ; 1550-4131
    ISSN (online) 1932-7420
    ISSN 1550-4131
    DOI 10.1016/j.cmet.2021.03.011
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: Intestinal Acyl-CoA synthetase 5 (ACSL5) deficiency potentiates postprandial GLP-1 & PYY secretion, reduces food intake, and protects against diet-induced obesity.

    Griffin, John D / Zhu, Ying / Reeves, Andrew / Buhman, Kimberly K / Greenberg, Andrew S

    Molecular metabolism

    2024  Volume 83, Page(s) 101918

    Abstract: Objective: In the small intestine, the products of digestion of dietary triacylglycerol (TAG), fatty acids (FA) and monoacylglycerol, are taken up by absorptive cells, enterocytes, for systemic energy delivery. These digestion products can also bind ... ...

    Abstract Objective: In the small intestine, the products of digestion of dietary triacylglycerol (TAG), fatty acids (FA) and monoacylglycerol, are taken up by absorptive cells, enterocytes, for systemic energy delivery. These digestion products can also bind receptors on endocrine cells to stimulate the release of hormones capable of influencing systemic energy metabolism. The initial phase of intestinal FA absorption involves the acylation of FAs to acyl-CoA by the acyl-CoA long chain synthetase (ACSL) enzymes. ACSL5 is abundantly expressed in the small intestinal epithelium where it is the major ACSL isoform, contributing approximately 80% of total ACSL activity. In mice with whole body deficiency of ACSL5, the rate of dietary fat absorption is reduced and energy expenditure is increased. However, the mechanisms by which intestinal ACSL5 contributes to intestinal FA metabolism, enteroendocrine signaling, and regulation of energy expenditure remain undefined. Here, we test the hypothesis that intestinal ACSL5 regulates energy metabolism by influencing dietary fat absorption and enteroendocrine signaling.
    Methods: To explore the role of intestinal ACSL5 in energy balance and intestinal dietary fat absorption, a novel mouse model of intestine specific ACSL5 deficiency (ACSL5
    Results: We found that ACSL5
    Conclusions: These data indicate that intestinal ACSL5 serves as a critical regulator of energy balance, protecting mice from diet-induced obesity exclusively by increasing satiety and reducing food intake during HFD feeding. The reduction in food intake observed in ACSL5
    MeSH term(s) Animals ; Coenzyme A Ligases/metabolism ; Coenzyme A Ligases/genetics ; Mice ; Obesity/metabolism ; Diet, High-Fat ; Male ; Glucagon-Like Peptide 1/metabolism ; Peptide YY/metabolism ; Mice, Inbred C57BL ; Eating ; Postprandial Period ; Energy Metabolism ; Mice, Knockout
    Chemical Substances Coenzyme A Ligases (EC 6.2.1.-) ; Glucagon-Like Peptide 1 (89750-14-1) ; Peptide YY (106388-42-5) ; acyl CoA synthetase 5 (EC 6.2.1.-)
    Language English
    Publishing date 2024-03-16
    Publishing country Germany
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't
    ZDB-ID 2708735-9
    ISSN 2212-8778 ; 2212-8778
    ISSN (online) 2212-8778
    ISSN 2212-8778
    DOI 10.1016/j.molmet.2024.101918
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article ; Online: Geriatric chronic recurrent multifocal osteomyelitis (CRMO) mimicking multifocal multiple myeloma: a first in an octogenarian.

    Sgaglione, Jonathan / Muran, Andrew / Rhode, Matthew / Goodman, Howard J / Edelman, Morris C / Shah, Suhail Ahmed / Greenberg, Andrew S / Kenan, Shachar

    Skeletal radiology

    2024  

    Abstract: Chronic recurrent multifocal osteomyelitis (CRMO), an autoinflammatory bone disorder characterized by non-bacterial osteomyelitis causing recurrent multifocal bone lesions, is a well-known, yet uncommon pediatric condition that rarely affects adults; to ... ...

    Abstract Chronic recurrent multifocal osteomyelitis (CRMO), an autoinflammatory bone disorder characterized by non-bacterial osteomyelitis causing recurrent multifocal bone lesions, is a well-known, yet uncommon pediatric condition that rarely affects adults; to date, it has never been diagnosed over the age of 75. The following report will discuss the first octogenarian diagnosed with CRMO and therefore represents an exceptionally rare presentation of a rare disease. An 83-year-old woman presented with progressive right shoulder, forearm, and hip pain, with associated weight loss and global weakness, requiring a wheelchair for mobility. Imaging revealed a pathologic right ulna fracture in addition to lytic lesions of the right proximal humerus and proximal femur. The clinical picture was thus that of a patient with probable multiple myeloma versus metastatic disease. After an extensive workup, however, the lesions were not malignant; histologic findings were instead suggestive of chronic osteomyelitis with negative cultures. Given the multifocal nature of this condition, combined with a lack of clinical symptoms of infection, a diagnosis of CRMO was rendered. The patient underwent intramedullary nailing of the right femur and splinting of the ulna, with a subsequent remarkable recovery to painless ambulation, complete union of the right ulna fracture, and resolution of the lytic lesions without receiving any targeted medical treatment. This case highlights the importance of maintaining CRMO on the differential for multifocal skeletal lesions, regardless of age. Performing a thorough workup with necessary imaging, biopsy, and culture are critical to establishing this diagnosis, which can only made as a diagnosis of exclusion.
    Language English
    Publishing date 2024-03-19
    Publishing country Germany
    Document type Journal Article
    ZDB-ID 527592-1
    ISSN 1432-2161 ; 0364-2348
    ISSN (online) 1432-2161
    ISSN 0364-2348
    DOI 10.1007/s00256-024-04653-z
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  4. Article ; Online: Integrated Action of Autophagy and Adipose Tissue Triglyceride Lipase Ameliorates Diet-Induced Hepatic Steatosis in Liver-Specific PLIN2 Knockout Mice.

    Griffin, John D / Bejarano, Eloy / Wang, Xiang-Dong / Greenberg, Andrew S

    Cells

    2021  Volume 10, Issue 5

    Abstract: An imbalance in the storage and breakdown of hepatic lipid droplet (LD) triglyceride (TAG) leads to hepatic steatosis, a defining feature of non-alcoholic fatty liver disease (NAFLD). The two primary cellular pathways regulating hepatic TAG catabolism ... ...

    Abstract An imbalance in the storage and breakdown of hepatic lipid droplet (LD) triglyceride (TAG) leads to hepatic steatosis, a defining feature of non-alcoholic fatty liver disease (NAFLD). The two primary cellular pathways regulating hepatic TAG catabolism are lipolysis, initiated by adipose triglyceride lipase (ATGL), and lipophagy. Each of these processes requires access to the LD surface to initiate LD TAG catabolism. Ablation of perilipin 2 (PLIN2), the most abundant lipid droplet-associated protein in steatotic liver, protects mice from diet-induced NAFLD. However, the mechanisms underlaying this protection are unclear. We tested the contributions of ATGL and lipophagy mediated lipolysis to reduced hepatic TAG in mice with liver-specific PLIN2 deficiency (PLIN2
    MeSH term(s) Adipose Tissue/enzymology ; Animals ; Autophagy ; Diet/adverse effects ; Lipase/genetics ; Lipase/metabolism ; Lipid Metabolism ; Liver/metabolism ; Male ; Mice ; Mice, Inbred C57BL ; Mice, Knockout ; Non-alcoholic Fatty Liver Disease/etiology ; Non-alcoholic Fatty Liver Disease/metabolism ; Non-alcoholic Fatty Liver Disease/pathology ; Non-alcoholic Fatty Liver Disease/prevention & control ; Perilipin-2/physiology ; Triglycerides/metabolism
    Chemical Substances Perilipin-2 ; Plin2 protein, mouse ; Triglycerides ; Lipase (EC 3.1.1.3)
    Language English
    Publishing date 2021-04-25
    Publishing country Switzerland
    Document type Journal Article ; Research Support, N.I.H., Extramural ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
    ZDB-ID 2661518-6
    ISSN 2073-4409 ; 2073-4409
    ISSN (online) 2073-4409
    ISSN 2073-4409
    DOI 10.3390/cells10051016
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: Knotless Suture Anchor Suspensionplasty for Basal Joint Arthritis A Prospective Case Series with Short-Term Outcomes.

    Larsen, Christopher G / Doering, Travis A / Rinaldi, John / Greenberg, Andrew S / Birdsong, Edward / Tuckman, David V

    Bulletin of the Hospital for Joint Disease (2013)

    2022  Volume 80, Issue 2, Page(s) 129–136

    Abstract: Background: The mainstay of surgical treatment for advanced basal joint arthritis is arthroplasty. Many differ- ent techniques of basal joint arthroplasty exist, but none has been determined to be superior to the others, and most methods used to ... ...

    Abstract Background: The mainstay of surgical treatment for advanced basal joint arthritis is arthroplasty. Many differ- ent techniques of basal joint arthroplasty exist, but none has been determined to be superior to the others, and most methods used to maintain the post-trapeziectomy space require postoperative immobilization or pin fixation. In this article, we describe a knotless suture anchor suspen- sionplasty (KSAS) technique and present a prospective case series with short-term outcomes. The KSAS technique utilizes a suspension construct to maintain the post-trapeziectomy space, allowing for early mobilization without the need for pin fixation or casting.
    Methods: Twenty-five patients underwent trapeziectomy with KSAS. Visual analog scale (VAS) for pain scores and Quick Disabilities of the Arm, Shoulder, and Hand (qDASH) scores were recorded preoperatively and at multiple post- operative points. Grip and pinch strengths were recorded. Maintenance of the post-trapeziectomy space and subsidence were determined by comparing preoperative and postopera- tive radiographs.
    Results: VAS pain scores were significantly reduced from baseline at all postoperative time points with a reduction from 6.54 to 1.47 at 20 to 24 weeks (p < 0.001). qDASH scores were also significantly decreased from baseline at all time points except for 1 week postoperatively with a re- duction from 57.71 to 12.27 at 20 to 24 weeks (p < 0.001). Grip strength improved from 80.43% compared to the non- operative side preoperatively to 90.36% at 6 months status post KSAS (p < 0.05). Radiographically, subsidence was 35.11% at final follow-up.
    Conclusions: Our data suggest that KSAS is a safe, effective, and reproducible basal joint arthroplasty tech- nique that allows for early mobilization while sufficiently maintaining the post-trapeziectomy space enough to prevent impingement of the first metacarpal on the scaphoid. Al- though there are limitations to this prospective case series, the data presented here warrant long-term outcome studies utilizing this technique.
    MeSH term(s) Arthritis, Gouty ; Carpometacarpal Joints/diagnostic imaging ; Carpometacarpal Joints/surgery ; Humans ; Osteoarthritis/diagnostic imaging ; Osteoarthritis/surgery ; Pain ; Suture Anchors ; Thumb/surgery
    Language English
    Publishing date 2022-05-28
    Publishing country United States
    Document type Journal Article
    ZDB-ID 390411-8
    ISSN 2328-5273 ; 1936-9727 ; 1936-9719 ; 0018-5647 ; 0883-9344 ; 2328-4633
    ISSN (online) 2328-5273 ; 1936-9727
    ISSN 1936-9719 ; 0018-5647 ; 0883-9344 ; 2328-4633
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Lipid Droplet Protein PLIN1 Regulates Inflammatory Polarity in Human Macrophages and is Involved in Atherosclerotic Plaque Development by Promoting Stable Lipid Storage.

    Cho, Kyu Yong / Miyoshi, Hideaki / Nakamura, Akinobu / Greenberg, Andrew S / Atsumi, Tatsuya

    Journal of atherosclerosis and thrombosis

    2022  Volume 30, Issue 2, Page(s) 170–181

    Abstract: Aim: Perilipins (PLINs), peripheral lipid droplet (LD) proteins, play important roles in lipid accumulation and maturation in adipocytes. The relationship between PLIN family proteins and macrophage polarization in atherosclerosis has not been ... ...

    Abstract Aim: Perilipins (PLINs), peripheral lipid droplet (LD) proteins, play important roles in lipid accumulation and maturation in adipocytes. The relationship between PLIN family proteins and macrophage polarization in atherosclerosis has not been elucidated.
    Methods: The experiments used tissues from human arteries of 65 patients who had undergone a carotid endarterectomy, and cultured macrophages generated from healthy human peripheral blood mononuclear cells.
    Results: Plaque immunohistochemistry demonstrated co-expression of PLIN1 and PLIN2 in both symptomatic (n=31) and asymptomatic patients (n=34). PLIN2 mRNA expression increased 3.38-fold in the symptomatic group compared with those from asymptomatic. PLIN1 was not expressed on small LDs at a shorter incubation but was on large LDs at longer incubation with oxidized LDL and VLDL, while PLIN2 was observed after 24 h and increased with a longer incubation in cultured M1 macrophage. In M2 macrophages, PLIN1 was seen as early as 24 h following incubation with VLDL, and LD size increased with longer incubation. PLIN1 overexpression increased the size of LDs in M1 macrophages, even after a short incubation, and reduced the RNA expression of TNFA, MMP2, ABCA1, and ABCG1 versus the M1 control. Conversely, silencing of PLIN1 in M2 macrophages had the opposite effects on LD size and RNA expression.
    Conclusion: There was a relationship between macrophage polarity, cytosolic LD size, and PLIN1/PLIN2 expression levels. PLIN2 was mainly expressed in arterial plaques in symptomatic stroke patients, and associated with the inflammatory phenotype of human macrophages, while PLIN1 expression is closely associated with plaque stability and the anti-inflammatory phenotype.
    MeSH term(s) Humans ; Plaque, Atherosclerotic/metabolism ; Lipid Droplets/metabolism ; Leukocytes, Mononuclear/metabolism ; Macrophages/metabolism ; Perilipin-2/genetics ; Perilipin-2/metabolism ; Lipids ; RNA/metabolism ; Perilipin-1/genetics ; Perilipin-1/metabolism
    Chemical Substances Perilipin-2 ; Lipids ; RNA (63231-63-0) ; PLIN1 protein, human ; Perilipin-1
    Language English
    Publishing date 2022-06-06
    Publishing country Japan
    Document type Journal Article
    ZDB-ID 2011474-6
    ISSN 1880-3873 ; 1340-3478
    ISSN (online) 1880-3873
    ISSN 1340-3478
    DOI 10.5551/jat.63153
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Correction: Myeloid-Specific Deficiency of

    Reeves, Andrew R / Sansbury, Brian E / Pan, Meixia / Han, Xianlin / Spite, Matthew / Greenberg, Andrew S

    Journal of immunology (Baltimore, Md. : 1950)

    2022  Volume 208, Issue 11, Page(s) 2593

    Language English
    Publishing date 2022-05-16
    Publishing country United States
    Document type Journal Article ; Published Erratum
    ZDB-ID 3056-9
    ISSN 1550-6606 ; 0022-1767 ; 1048-3233 ; 1047-7381
    ISSN (online) 1550-6606
    ISSN 0022-1767 ; 1048-3233 ; 1047-7381
    DOI 10.4049/jimmunol.2200133
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article: The Impacts of Slc19a3 Deletion and Intestinal SLC19A3 Insertion on Thiamine Distribution and Brain Metabolism in the Mouse.

    Wen, Anita / Zhu, Ying / Yee, Sook Wah / Park, Brian I / Giacomini, Kathleen M / Greenberg, Andrew S / Newman, John W

    Metabolites

    2023  Volume 13, Issue 8

    Abstract: The Thiamine Transporter 2 (THTR2) encoded ... ...

    Abstract The Thiamine Transporter 2 (THTR2) encoded by
    Language English
    Publishing date 2023-07-26
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2662251-8
    ISSN 2218-1989
    ISSN 2218-1989
    DOI 10.3390/metabo13080885
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: NAAA-regulated lipid signaling in monocytes controls the induction of hyperalgesic priming in mice.

    Fotio, Yannick / Mabou Tagne, Alex / Squire, Erica / Lee, Hye-Lim / Phillips, Connor M / Chang, Kayla / Ahmed, Faizy / Greenberg, Andrew S / Villalta, S Armando / Scarfone, Vanessa M / Spadoni, Gilberto / Mor, Marco / Piomelli, Daniele

    Nature communications

    2024  Volume 15, Issue 1, Page(s) 1705

    Abstract: Circulating monocytes participate in pain chronification but the molecular events that cause their deployment are unclear. Using a mouse model of hyperalgesic priming (HP), we show that monocytes enable progression to pain chronicity through a mechanism ... ...

    Abstract Circulating monocytes participate in pain chronification but the molecular events that cause their deployment are unclear. Using a mouse model of hyperalgesic priming (HP), we show that monocytes enable progression to pain chronicity through a mechanism that requires transient activation of the hydrolase, N-acylethanolamine acid amidase (NAAA), and the consequent suppression of NAAA-regulated lipid signaling at peroxisome proliferator-activated receptor-α (PPAR-α). Inhibiting NAAA in the 72 hours following administration of a priming stimulus prevented HP. This effect was phenocopied by NAAA deletion and depended on PPAR-α recruitment. Mice lacking NAAA in CD11b
    MeSH term(s) Humans ; Amidohydrolases ; Enzyme Inhibitors/pharmacology ; Hyperalgesia/genetics ; Lipids ; Monocytes ; Pain ; PPAR alpha ; Animals ; Mice
    Chemical Substances Amidohydrolases (EC 3.5.-) ; Enzyme Inhibitors ; Lipids ; NAAA protein, human (EC 3.5.1.-) ; PPAR alpha ; NAAA protein, mouse (EC 3.5.1.-)
    Language English
    Publishing date 2024-02-24
    Publishing country England
    Document type Journal Article
    ZDB-ID 2553671-0
    ISSN 2041-1723 ; 2041-1723
    ISSN (online) 2041-1723
    ISSN 2041-1723
    DOI 10.1038/s41467-024-46139-5
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: The Effect of Trimethoprim on Thiamine Absorption: A Transporter‐Mediated Drug‐Nutrient Interaction

    Vora, Bianca / Wen, Anita / Yee, Sook Wah / Trinh, Kim / Azimi, Mina / Green, Elizabeth A. E. / Sirota, Marina / Greenberg, Andrew S. / Newman, John W. / Giacomini, Kathleen M.

    Clinical Pharmacology & Therapeutics. 2023 May 07, v. 114, no. 2 p.381-392

    2023  

    Abstract: Trimethoprim is predicted to inhibit several thiamine transporters, including the primary thiamine intestinal absorptive transporter, ThTR-2, and the hepatic and renal organic cation transporters, OCT1, OCT2, and MATEs. To investigate the effect of ... ...

    Abstract Trimethoprim is predicted to inhibit several thiamine transporters, including the primary thiamine intestinal absorptive transporter, ThTR-2, and the hepatic and renal organic cation transporters, OCT1, OCT2, and MATEs. To investigate the effect of trimethoprim on thiamine absorption, studies were conducted in cells, mice, and healthy volunteers and supported by use of real-world data. In a randomized, crossover clinical study, seven healthy volunteers were given a single oral dose of thiamine or thiamine plus trimethoprim, followed by blood sampling. The thiamine area under the curve (AUC) increased with trimethoprim co-administration (P value = 0.031). Similar results were seen in mice. Trimethoprim appeared to act on thiamine absorption through inhibition of hepatic OCT1 as evidenced from its ability to modulate levels of isobutyrylcarnitine and propionylcarnitine, OCT1 biomarkers identified from metabolomic analyses. Real-world data further supported this finding, showing an association between trimethoprim use and higher lev
    Keywords absorption ; biomarkers ; blood ; cations ; intestines ; low density lipoprotein cholesterol ; metabolomics ; oral administration ; pharmacology ; thiamin ; trimethoprim
    Language English
    Dates of publication 2023-0507
    Size p. 381-392.
    Publishing place Wiley
    Document type Article ; Online
    Note Resource is Open Access
    ZDB-ID 123793-7
    ISSN 1532-6535 ; 0009-9236
    ISSN (online) 1532-6535
    ISSN 0009-9236
    DOI 10.1002/cpt.2932
    Database NAL-Catalogue (AGRICOLA)

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