1
|
Aleksić V, Todorović J, Miladinović N, Aleksić N, Bogosavljević V, Đurović M, Kocić S, Aleksić R, Joković M. Ligamentum flavum analysis in patients with lumbar discus hernia and lumbar spinal stenosis. Sci Rep 2023; 13:3804. [PMID: 36882487 PMCID: PMC9992359 DOI: 10.1038/s41598-023-30928-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2022] [Accepted: 03/03/2023] [Indexed: 03/09/2023] Open
Abstract
The normal ligamentum flavum (LF) is a well-defined elastic structure with specific innervation. Several studies investigated LF in patients with lumbar spinal stenosis (LSS) and used lumbar discus hernia (LDH) patients as control group, only on the presumed thesis that LF in this patients have normal morphology. In patients with LSS thickening of the LF is the main cause of stenosis, which is most often presented with neurogenic claudication, whose pathophysiological mechanism is not completely understood. We conducted observational cohort study of 60 operated patients divided into two groups. The first group of 30 patients underwent micro-discectomy (LSH group), and second group with 30 patients underwent decompression, after which analysis of harvested LF was performed. Patients from the LDH group and LSS group differed significantly in the frequencies of chief complaints, duration of symptoms, physical examination, and specific morphological/radiological parameters. The LF analysis showed that the groups differed significantly in the amount of collagen and elastic fibers, as well as in the histological appearance/architectonics of elastic fibers. Also, groups differ in the presence of LF nerve fibers. Our findings speak in favor of the recently postulated inflammatory theory in the origin of spinal neurogenic claudication's.
Collapse
Affiliation(s)
- Vuk Aleksić
- Department of Neurosurgery, Clinical Hospital Center Zemun, Belgrade, Serbia.
| | - Jovana Todorović
- Institute for Social Medicine, Belgrade, Serbia.,Faculty of Medicine, University of Belgrade, Belgrade, Serbia
| | - Nenad Miladinović
- Department of Pathology, Clinical Hospital Center Zemun, Belgrade, Serbia
| | - Nemanja Aleksić
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Clinic for Cardiac Surgery, Clinical Center of Serbia, Belgrade, Serbia
| | - Vojislav Bogosavljević
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Neurosurgery Clinic, Clinical Center of Serbia, Belgrade, Serbia
| | - Marko Đurović
- Neurosurgery Clinic, Clinical Center of Serbia, Belgrade, Serbia
| | - Svetlana Kocić
- Department of Radiology, Clinical Hospital Center Zemun, Belgrade, Serbia
| | - Radmila Aleksić
- Department of Neurosurgery, Clinical Hospital Center Zemun, Belgrade, Serbia
| | - Miloš Joković
- Faculty of Medicine, University of Belgrade, Belgrade, Serbia.,Neurosurgery Clinic, Clinical Center of Serbia, Belgrade, Serbia
| |
Collapse
|
2
|
Obradović DD, Milić NM, Miladinović N, McClements L, Oprić DM. Loss of Expression of Antiangiogenic Protein FKBPL in Endometrioid Endometrial Carcinoma: Implications for Clinical Practice. Medicina (Kaunas) 2022; 58:medicina58101330. [PMID: 36295491 PMCID: PMC9606853 DOI: 10.3390/medicina58101330] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/08/2022] [Revised: 09/09/2022] [Accepted: 09/19/2022] [Indexed: 12/04/2022]
Abstract
Background and Objectives: FK506 binding protein like (FKBPL) is a member of the immunophilin family, with anti-angiogenic effects capable of inhibiting the migration of endothelial cells and blood vessel formation. Its role as an inhibitor of tumor growth and angiogenesis has previously been shown in studies with breast and ovarian cancer. The role of FKBPL in angiogenesis, growth, and carcinogenesis of endometrioid endometrial carcinoma (EEC) is still largely unknown. The aim of this study was to examine the expression of FKBPL in EEC and benign endometrial hyperplasia (BEH) and its correlation with the expression of vascular endothelial factor-A (VEGF-A) and estrogen receptor alpha (ERα). Materials and Methods: Specimens from 89 patients with EEC and 40 patients with BEH, as well as histological, clinical, and demographic data, were obtained from the Clinical Hospital Centre Zemun, Belgrade, Serbia over a 10-year period (2010−2020). Immunohistochemical staining of the tissue was performed for FKBPL, VEGF-A, and ERα. Slides were analyzed blind by two pathologists, who measured the intensity of FKBPL and VEGF-A expression and used the Allred score to determine the level of ERα expression. Results: Immunohistochemical analysis showed moderate to high intensity of FKBPL expression in 97.5% (n = 39) of samples of BEH, and low or no expression in 93.3% (n = 83) of cases of EEC. FKBPL staining showed a high positive predictive value (98.8%) and a high negative predictive value for malignant diagnosis (86.7%). The difference in FKBPL expression between EEC and BEH was statistically significant (p < 0.001), showing a decrease in intensity and loss of expression in malignant tissues of the endometrium. FKBPL expression was positively correlated with ERα expression (intensity, percentage and high Allred score values) and negatively correlated with the expression of VEGF-A (p < 0.05 for all). Conclusions: FKBPL protein expression demonstrated a significant decrease in FKBPL in EEC in comparison to BEH tissue, with a high predictive value for malignancy. FKBPL might be emerging as a significant protein with antiangiogenic and antineoplastic effects, showing great promise for the diagnostic and therapeutic applications of its therapeutic derivatives in gynecological oncology.
Collapse
Affiliation(s)
- Danilo D. Obradović
- Institute of Pathology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
- Correspondence: or
| | - Nataša M. Milić
- Institute for Medical Statistics and Informatics, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| | - Nenad Miladinović
- Department of Pathology, Clinical Hospital Centre Zemun, 11000 Belgrade, Serbia
| | - Lana McClements
- Faculty of Science, School of Life Sciences, University of Technology Sydney, Sydney, NSW 2007, Australia
| | - Dejan M. Oprić
- Institute of Pathology, Faculty of Medicine, University of Belgrade, 11000 Belgrade, Serbia
| |
Collapse
|
3
|
Gligorovska L, Teofilović A, Vojnović Milutinović D, Miladinović N, Kovačević S, Veličković N, Djordjevic A. Macrophage migration inhibitory factor deficiency aggravates effects of fructose-enriched diet on lipid metabolism in the mouse liver. Biofactors 2021; 47:363-375. [PMID: 33522030 DOI: 10.1002/biof.1711] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/16/2020] [Accepted: 01/04/2021] [Indexed: 02/06/2023]
Abstract
Dietary fructose can disturb hepatic lipid metabolism in a way that leads to lipid accumulation and steatosis, which is often accompanied with low-grade inflammation. The macrophage migration inhibitory factor (MIF) is a proinflammatory cytokine with important role not only in the regulation of inflammation, but also in the modulation of energy metabolism in the liver. Thus, the aim of this study was to investigate the role of Mif deficiency in fructose-induced disturbances of hepatic lipid metabolism and ectopic lipid accumulation. Wild type (WT) and Mif deficient (MIF-/- ) C57Bl/6J mice were used to analyze the effects of 9-week 20% fructose-enriched diet on hepatic lipid metabolism (both lipogenesis and β-oxidation) and histology, inflammatory status and glucocorticoid receptor (GR) signaling. The results showed fructose-induced elevation of lipogenic genes (fatty acid synthase (Fas) and stearoyl-CoA desaturase-1 (Scd1) and transcriptional lipogenic regulators (liver X receptor (LXR), sterol regulatory element binding protein 1c (SREBP1c), and carbohydrate response element-binding protein (ChREBP)). However, microvesicular fatty changes, accompanied with enhanced inflammation, were observable only in fructose-fed Mif deficient animals, and were most likely result of GR activation and facilitated uptake and decreased β-oxidation of FFA, as evidenced by elevated protein level of fatty acid translocase (FAT/CD36) and decreased carnitine palmitoyl transferase 1 (CPT1) level. In conclusion, the results show that Mif deficiency aggravates the effects of energy-rich fructose diet on hepatic lipid accumulation, most likely through enhanced inflammation and activation of GR signaling pathway.
Collapse
Affiliation(s)
- Ljupka Gligorovska
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ana Teofilović
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Danijela Vojnović Milutinović
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nenad Miladinović
- Clinical Hospital Center Zemun, University of Belgrade, Belgrade, Serbia
| | - Sanja Kovačević
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Nataša Veličković
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| | - Ana Djordjevic
- Department of Biochemistry, Institute for Biological Research "Siniša Stanković" - National Institute of Republic of Serbia, University of Belgrade, Belgrade, Serbia
| |
Collapse
|