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  1. Article ; Online: Editorial overview: New and revitalized old targets in metabolic disease.

    Hansen, Jacob B / Novak, Ivana

    Current opinion in pharmacology

    2024  Volume 75, Page(s) 102434

    MeSH term(s) Humans ; Metabolic Diseases/drug therapy
    Language English
    Publishing date 2024-01-25
    Publishing country England
    Document type Editorial
    ZDB-ID 2037057-X
    ISSN 1471-4973 ; 1471-4892
    ISSN (online) 1471-4973
    ISSN 1471-4892
    DOI 10.1016/j.coph.2024.102434
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  2. Article ; Online: A brief overview of BNIP3L/NIX receptor-mediated mitophagy.

    Marinković, Mija / Novak, Ivana

    FEBS open bio

    2021  Volume 11, Issue 12, Page(s) 3230–3236

    Abstract: Mitophagy is a form of autophagy specialized to selectively remove mitochondria. Although the PINK1/Parkin pathway is the best described mitophagy of damaged mitochondria, receptor/mediated mitophagy seems to have a pivotal role in cellular development ... ...

    Abstract Mitophagy is a form of autophagy specialized to selectively remove mitochondria. Although the PINK1/Parkin pathway is the best described mitophagy of damaged mitochondria, receptor/mediated mitophagy seems to have a pivotal role in cellular development and specialization. The most studied mitophagy receptor BCL2/adenovirus E1B 19-kDa-interacting protein 3-like (BNIP3L/NIX) is shown to be important for the programmed removal of healthy mitochondria during terminal differentiation of erythrocytes, but its role has been proven in various cell types. Despite recent advances in our understanding of its regulation by phosphorylation and dimerization, there remain numerous questions on how BNIP3L/NIX tightly balances between cellular life and death decisions. This brief review intends to summarize ongoing dilemmas related to BNIP3L/NIX.
    MeSH term(s) Apoptosis Regulatory Proteins/metabolism ; Autophagy/physiology ; Cell Differentiation ; Humans ; Membrane Proteins/metabolism ; Membrane Proteins/physiology ; Mitochondria/metabolism ; Mitochondrial Proteins/metabolism ; Mitophagy/physiology ; Phosphorylation ; Proto-Oncogene Proteins/metabolism ; Proto-Oncogene Proteins/physiology ; Tumor Suppressor Proteins/metabolism ; Tumor Suppressor Proteins/physiology ; Ubiquitin-Protein Ligases
    Chemical Substances Apoptosis Regulatory Proteins ; BNIP3L protein, human ; Membrane Proteins ; Mitochondrial Proteins ; Proto-Oncogene Proteins ; Tumor Suppressor Proteins ; Ubiquitin-Protein Ligases (EC 2.3.2.27) ; parkin protein (EC 2.3.2.27)
    Language English
    Publishing date 2021-10-11
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2651702-4
    ISSN 2211-5463 ; 2211-5463
    ISSN (online) 2211-5463
    ISSN 2211-5463
    DOI 10.1002/2211-5463.13307
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  3. Article: A brief overview of BNIP3L/NIX receptor‐mediated mitophagy

    Marinković, Mija / Novak, Ivana

    FEBS Open Bio. 2021 Dec., v. 11, no. 12

    2021  

    Abstract: Mitophagy is a form of autophagy specialized to selectively remove mitochondria. Although the PINK1/Parkin pathway is the best described mitophagy of damaged mitochondria, receptor/mediated mitophagy seems to have a pivotal role in cellular development ... ...

    Abstract Mitophagy is a form of autophagy specialized to selectively remove mitochondria. Although the PINK1/Parkin pathway is the best described mitophagy of damaged mitochondria, receptor/mediated mitophagy seems to have a pivotal role in cellular development and specialization. The most studied mitophagy receptor BCL2/adenovirus E1B 19‐kDa‐interacting protein 3‐like (BNIP3L/NIX) is shown to be important for the programmed removal of healthy mitochondria during terminal differentiation of erythrocytes, but its role has been proven in various cell types. Despite recent advances in our understanding of its regulation by phosphorylation and dimerization, there remain numerous questions on how BNIP3L/NIX tightly balances between cellular life and death decisions. This brief review intends to summarize ongoing dilemmas related to BNIP3L/NIX.
    Keywords death ; dimerization ; erythrocytes ; mitochondria ; mitophagy ; phosphorylation
    Language English
    Dates of publication 2021-12
    Size p. 3230-3236.
    Publishing place John Wiley & Sons, Ltd
    Document type Article
    Note REVIEW
    ZDB-ID 2651702-4
    ISSN 2211-5463
    ISSN 2211-5463
    DOI 10.1002/2211-5463.13307
    Database NAL-Catalogue (AGRICOLA)

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  4. Article ; Online: Imaging of extracellular and intracellular ATP in pancreatic beta cells reveals correlation between glucose metabolism and purinergic signalling.

    Ghiasi, Seyed M / Christensen, Nynne M / Pedersen, Per A / Skovhøj, Emil Z / Novak, Ivana

    Cellular signalling

    2024  Volume 117, Page(s) 111109

    Abstract: Adenosine triphosphate (ATP) is a universal energy molecule and yet cells release it and extracellular ATP is an important signalling molecule between cells. Monitoring of ATP levels outside of cells is important for our understanding of physiological ... ...

    Abstract Adenosine triphosphate (ATP) is a universal energy molecule and yet cells release it and extracellular ATP is an important signalling molecule between cells. Monitoring of ATP levels outside of cells is important for our understanding of physiological and pathophysiological processes in cells/tissues. Here, we focus on pancreatic beta cells (INS-1E) and test the hypothesis that there is an association between intra- and extracellular ATP levels which depends on glucose provision. We imaged real-time changes in extracellular ATP in pancreatic beta cells using two sensors tethered to extracellular aspects of the plasma membrane (eATeam3.10, iATPSnFR1.0). Increase in glucose induced fast micromolar ATP release to the cell surface, depending on glucose concentrations. Chronic pre-treatment with glucose increased the basal ATP signal. In addition, we co-expressed intracellular ATP sensors (ATeam1.30, PercevalHR) in the same cultures and showed that glucose induced fast increases in extracellular and intracellular ATP. Glucose and extracellular ATP stimulated glucose transport monitored by the glucose sensor (FLII12Pglu-700uDelta6). In conclusion, we propose that in beta cells there is a dynamic relation between intra- and extracellular ATP that depends on glucose transport and metabolism and these processes may be tuned by purinergic signalling. Future development of ATP sensors for imaging may aid development of novel approaches to target extracellular ATP in, for example, type 2 diabetes mellitus therapy.
    MeSH term(s) Humans ; Insulin-Secreting Cells/metabolism ; Adenosine Triphosphate/metabolism ; Diabetes Mellitus, Type 2/metabolism ; Signal Transduction ; Glucose/metabolism
    Chemical Substances Adenosine Triphosphate (8L70Q75FXE) ; Glucose (IY9XDZ35W2)
    Language English
    Publishing date 2024-02-17
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't
    ZDB-ID 1002702-6
    ISSN 1873-3913 ; 0898-6568
    ISSN (online) 1873-3913
    ISSN 0898-6568
    DOI 10.1016/j.cellsig.2024.111109
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  5. Article ; Online: COVID-19 in kidney transplant recipients; a DALMATIAN single-center experience.

    Dogas, Tina / Brkovic, Tonci / Novak, Ivana / Radic, Josipa

    Therapeutic apheresis and dialysis : official peer-reviewed journal of the International Society for Apheresis, the Japanese Society for Apheresis, the Japanese Society for Dialysis Therapy

    2022  

    Abstract: Introduction: We aimed to explore COVID-19 severity, complications, and outcome predictors in the Dalmatian population of kidney transplant recipients (KTRs).: Methods: KTRs confirmed with acute COVID-19 infection until May 2021 were included and ... ...

    Abstract Introduction: We aimed to explore COVID-19 severity, complications, and outcome predictors in the Dalmatian population of kidney transplant recipients (KTRs).
    Methods: KTRs confirmed with acute COVID-19 infection until May 2021 were included and followed up for 6 months.
    Results: Out of 50 KTRs average aged 63 years, 36 (72%) were men. Nine (18%) KTRs had no pulmonary infiltration, and twenty-nine (58%) did not require oxygen supplementation. Bilateral pulmonary infiltrates had 29 (58%) while high-flow nasal cannula or mechanical ventilation required 8 (16%) KTRs. The mortality rate was 16%. Acute kidney injury developed in 18 (36%), and acute renal replacement therapy required 2 (4%) KTRs. Nine (18%) KTRs were subsequently rehospitalized. Chronic COVID-19 syndrome reported 23 (58%) KTRs.
    Conclusions: D-dimers were found to be the key prognostic factor of clinical complications, emphasizing the importance of underlying thrombotic microangiopathy. Optimal immunosuppressant adjusting in KTRs with acute COVID-19 infection remains to be clarified.
    Language English
    Publishing date 2022-06-09
    Publishing country Australia
    Document type Journal Article
    ZDB-ID 2119809-3
    ISSN 1744-9987 ; 1091-6660 ; 1744-9979
    ISSN (online) 1744-9987
    ISSN 1091-6660 ; 1744-9979
    DOI 10.1111/1744-9987.13894
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  6. Article ; Online: Role of the P2X7 receptor in the pathogenesis of type 2 diabetes and its microvascular complications.

    Solini, Anna / Novak, Ivana

    Current opinion in pharmacology

    2019  Volume 47, Page(s) 75–81

    Abstract: P2X7 receptors can be found in many tissues and organs, where they mediate several biological functions. This review summarizes the current knowledge about the role of this receptor in the pathogenesis of type 2 diabetes, in which the key clinical ... ...

    Abstract P2X7 receptors can be found in many tissues and organs, where they mediate several biological functions. This review summarizes the current knowledge about the role of this receptor in the pathogenesis of type 2 diabetes, in which the key clinical features are impaired insulin secretion and sensitivity, hyperglycemia, coexistence of other cardiovascular risk factors such as dyslipidemia and hypertension, and subclinical inflammation. The receptor modulates crucial pathways in the pancreatic islets (where it can either exert a trophic or detrimental action on β cells), and in the liver, in the adipose tissue and in the skeletal muscle, which are main sites of insulin resistance. P2X7 receptors also modulate a series of inflammatory responses that participate in the development of the microvascular complications of the disease. Potent and selective P2X7R blockers are available to be tested in Phase I/II clinical studies for the treatment of several chronic diseases, and it might be worthwhile to consider inclusion of patients with type 2 diabetes and its complications.
    MeSH term(s) Animals ; Diabetes Mellitus, Type 2/complications ; Diabetes Mellitus, Type 2/metabolism ; Diabetic Nephropathies/metabolism ; Diabetic Neuropathies/metabolism ; Diabetic Retinopathy/metabolism ; Humans ; Microvessels/metabolism ; Receptors, Purinergic P2X7/metabolism
    Chemical Substances Receptors, Purinergic P2X7
    Language English
    Publishing date 2019-04-05
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 2037057-X
    ISSN 1471-4973 ; 1471-4892
    ISSN (online) 1471-4973
    ISSN 1471-4892
    DOI 10.1016/j.coph.2019.02.009
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  7. Article ; Online: Associations of Serum Calprotectin, Arterial Stiffness and Long COVID Symptoms in Dalmatian Kidney Transplant Recipients.

    Đogaš, Tina / Novak, Ivana / Babić, Marija / Vučković, Marijana / Tandara, Leida / Radić, Josipa

    Viruses

    2023  Volume 15, Issue 8

    Abstract: We aimed to explore long COVID symptoms, serum calprotectin levels, and the parameters of arterial stiffness in Dalmatian kidney transplant recipients (KTRs) and their possible associations. A cross-sectional, single-center case-control study on 98 KTRs ... ...

    Abstract We aimed to explore long COVID symptoms, serum calprotectin levels, and the parameters of arterial stiffness in Dalmatian kidney transplant recipients (KTRs) and their possible associations. A cross-sectional, single-center case-control study on 98 KTRs who had recovered from COVID-19 was performed. Long COVID symptoms were explored via standardized questionnaires assessing quality of life, and serum calprotectin was also measured. Out of 98 KTRs with a mean age of 62 years, 63 (64.3%) were men. Medical history, clinical and laboratory parameters, and arterial stiffness measurements were obtained for each study participant. Difficulties with mobility were present in 44.3% of the KTRs, while difficulties with self-care were present in 6.2%, difficulties with usual activities were demonstrated by 35.1%, pain in the extremities was present in 52.5%, and anxiety and depression were present in 26.8%. Our results showed significant differences regarding serum calprotectin levels in clinical manifestations of acute COVID-19 and follow-up laboratory parameters. The most significant positive predictors of the serum calprotectin value in the KTRs were respiratory insufficiency, acute kidney failure, the prescription of antihypertensives, leukocyte and neutrophil counts, the neutrophil/lymphocyte ratio and lactate dehydrogenase levels. Negative predictors were the time since COVID-19, high-density lipoprotein levels, kidney function parameters, and the lymphocyte count. To conclude, serum calprotectin has emerged as a possible promising biomarker for subclinical allograft rejection; however, further studies are needed to better understand this subject.
    MeSH term(s) Male ; Humans ; Middle Aged ; Female ; Post-Acute COVID-19 Syndrome ; COVID-19/diagnosis ; Case-Control Studies ; Cross-Sectional Studies ; Kidney Transplantation/adverse effects ; Quality of Life ; Vascular Stiffness ; Leukocyte L1 Antigen Complex
    Chemical Substances Leukocyte L1 Antigen Complex
    Language English
    Publishing date 2023-08-21
    Publishing country Switzerland
    Document type Journal Article
    ZDB-ID 2516098-9
    ISSN 1999-4915 ; 1999-4915
    ISSN (online) 1999-4915
    ISSN 1999-4915
    DOI 10.3390/v15081776
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  8. Article ; Online: Mitophagy: a complex mechanism of mitochondrial removal.

    Novak, Ivana

    Antioxidants & redox signaling

    2012  Volume 17, Issue 5, Page(s) 794–802

    Abstract: Significance: Mitochondrial dynamics and turnover are crucial for cellular homeostasis and differentiation. The removal of damaged mitochondria that could contribute to cellular dysfunction or death is achieved through the process of mitochondrial ... ...

    Abstract Significance: Mitochondrial dynamics and turnover are crucial for cellular homeostasis and differentiation. The removal of damaged mitochondria that could contribute to cellular dysfunction or death is achieved through the process of mitochondrial autophagy, i.e., mitophagy. Moreover, mitophagy is responsible for removal of mitochondria during terminal differentiation of red blood cells and T cells.
    Recent advances: Recent work is elucidating how mitochondria are recognized for selective mitophagy either by PINK1 and Parkin or mitophagic receptors Nix and Bnip3 and their accompanying modulators. PINK1/Parkin-mediated mitophagy reveals their role of cargo recognition through polyubiquitination of mitochondrial proteins, while Nix functions as a regulated mitophagy receptor. These recognized modes of capture by the autophagy machinery operate at different efficiencies, from partial to complete elimination of mitochondria.
    Critical issues: It is critical to understand that the distinct regulatory mechanisms involve not only autophagy machinery, but also proteins associated with mitochondrial fusion and fission and therefore, regulation of mitochondrial morphology. The end result is either finely tuned quality control of damaged mitochondria, or mitochondrial clearance during development- induced mitophagy.
    Future directions: In this article, known mechanisms and future directions for deciphering the challenge of mitophagy regulation will be discussed.
    MeSH term(s) Cell Differentiation ; Homeostasis ; Humans ; Mitochondria/physiology ; Phagocytosis
    Language English
    Publishing date 2012-09-01
    Publishing country United States
    Document type Journal Article ; Review
    ZDB-ID 1483836-9
    ISSN 1557-7716 ; 1523-0864
    ISSN (online) 1557-7716
    ISSN 1523-0864
    DOI 10.1089/ars.2011.4407
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  9. Article ; Online: P2X receptor-ion channels in the inflammatory response in adipose tissue and pancreas-potential triggers in onset of type 2 diabetes?

    Novak, Ivana / Solini, Anna

    Current opinion in immunology

    2018  Volume 52, Page(s) 1–7

    Abstract: Type 2 diabetes is reaching an alarming prevalence worldwide. Its complex pathogenesis certainly includes a pivotal role of low-grade inflammation, which could be triggered by excessive purinergic signaling. In this complex scenario, extracellular ATP ... ...

    Abstract Type 2 diabetes is reaching an alarming prevalence worldwide. Its complex pathogenesis certainly includes a pivotal role of low-grade inflammation, which could be triggered by excessive purinergic signaling. In this complex scenario, extracellular ATP impairs the function of two key players: β-cell and adipose tissue. In the former, P2Y and possibly some P2X receptors-ion channels regulate insulin secretion, but it is still debated whether excessive ATP can via P2X receptors impair β-cell function directly or whether cell damage is due to an excessive systemic release of cytokines. In human adipocytes, the P2X7 receptor promotes the release of inflammatory cytokines, at least in part via inflammasome activation, likely contributing to systemic insulin resistance. This receptor-inflammasome system is also strongly activated in macrophages infiltrating both pancreas and adipose tissue, mediating a deleterious cross-talk that perpetuates the damage.
    MeSH term(s) Adipocytes/metabolism ; Adipose Tissue/metabolism ; Adipose Tissue/pathology ; Animals ; Diabetes Mellitus, Type 2/etiology ; Diabetes Mellitus, Type 2/metabolism ; Humans ; Inflammation/metabolism ; Insulin-Secreting Cells/metabolism ; Macrophages/immunology ; Macrophages/metabolism ; Pancreas/metabolism ; Pancreas/pathology ; Receptors, Purinergic P2X/metabolism
    Chemical Substances Receptors, Purinergic P2X
    Language English
    Publishing date 2018-03-06
    Publishing country England
    Document type Journal Article ; Research Support, Non-U.S. Gov't ; Review
    ZDB-ID 1035767-1
    ISSN 1879-0372 ; 0952-7915
    ISSN (online) 1879-0372
    ISSN 0952-7915
    DOI 10.1016/j.coi.2018.02.002
    Database MEDical Literature Analysis and Retrieval System OnLINE

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  10. Article ; Online: Purinergic Signaling in Pancreas-From Physiology to Therapeutic Strategies in Pancreatic Cancer.

    Novak, Ivana / Yu, Haoran / Magni, Lara / Deshar, Ganga

    International journal of molecular sciences

    2020  Volume 21, Issue 22

    Abstract: The purinergic signaling has an important role in regulating pancreatic exocrine secretion. The exocrine pancreas is also a site of one of the most serious cancer forms, the pancreatic ductal adenocarcinoma (PDAC). Here, we explore how the network of ... ...

    Abstract The purinergic signaling has an important role in regulating pancreatic exocrine secretion. The exocrine pancreas is also a site of one of the most serious cancer forms, the pancreatic ductal adenocarcinoma (PDAC). Here, we explore how the network of purinergic and adenosine receptors, as well as ecto-nucleotidases regulate normal pancreatic cells and various cells within the pancreatic tumor microenvironment. In particular, we focus on the P2X7 receptor, P2Y
    MeSH term(s) 5'-Nucleotidase/genetics ; 5'-Nucleotidase/immunology ; Animals ; Antibodies, Monoclonal/therapeutic use ; Antineoplastic Agents, Immunological/therapeutic use ; Apyrase/genetics ; Apyrase/immunology ; Carcinoma, Pancreatic Ductal/drug therapy ; Carcinoma, Pancreatic Ductal/genetics ; Carcinoma, Pancreatic Ductal/immunology ; Carcinoma, Pancreatic Ductal/pathology ; Clinical Trials as Topic ; GPI-Linked Proteins/genetics ; GPI-Linked Proteins/immunology ; Gene Expression Regulation, Neoplastic/drug effects ; Gene Expression Regulation, Neoplastic/immunology ; Humans ; Immunotherapy/methods ; Pancreas/drug effects ; Pancreas/immunology ; Pancreas/pathology ; Pancreatic Neoplasms/drug therapy ; Pancreatic Neoplasms/genetics ; Pancreatic Neoplasms/immunology ; Pancreatic Neoplasms/pathology ; Pancreatic Stellate Cells/drug effects ; Pancreatic Stellate Cells/immunology ; Pancreatic Stellate Cells/pathology ; Receptors, Adenosine A2/genetics ; Receptors, Adenosine A2/immunology ; Receptors, Purinergic P2X7/genetics ; Receptors, Purinergic P2X7/immunology ; Receptors, Purinergic P2Y12/genetics ; Receptors, Purinergic P2Y12/immunology ; Receptors, Purinergic P2Y2/genetics ; Receptors, Purinergic P2Y2/immunology ; Signal Transduction/genetics ; Signal Transduction/immunology ; Tumor Microenvironment/drug effects ; Tumor Microenvironment/genetics ; Tumor Microenvironment/immunology
    Chemical Substances Antibodies, Monoclonal ; Antineoplastic Agents, Immunological ; GPI-Linked Proteins ; P2RX7 protein, human ; P2RY12 protein, human ; Receptors, Adenosine A2 ; Receptors, Purinergic P2X7 ; Receptors, Purinergic P2Y12 ; Receptors, Purinergic P2Y2 ; 5'-Nucleotidase (EC 3.1.3.5) ; NT5E protein, human (EC 3.1.3.5) ; Apyrase (EC 3.6.1.5) ; ENTPD1 protein, human (EC 3.6.1.5)
    Language English
    Publishing date 2020-11-20
    Publishing country Switzerland
    Document type Journal Article ; Review
    ZDB-ID 2019364-6
    ISSN 1422-0067 ; 1422-0067 ; 1661-6596
    ISSN (online) 1422-0067
    ISSN 1422-0067 ; 1661-6596
    DOI 10.3390/ijms21228781
    Database MEDical Literature Analysis and Retrieval System OnLINE

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