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Türedi S, Çelik H, Dağlı ŞN, Taşkın S, Şeker U, Deniz M. An Examination of the Effects of Propolis and Quercetin in a Rat Model of Streptozotocin-Induced Diabetic Peripheral Neuropathy. Curr Issues Mol Biol 2024; 46:1955-1974. [PMID: 38534744 DOI: 10.3390/cimb46030128] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2024] [Revised: 02/27/2024] [Accepted: 02/28/2024] [Indexed: 03/28/2024] Open
Abstract
The purpose of this study was to reveal the combined effects of propolis (P) and quercetin (Q) against diabetic peripheral neuropathy developing with streptozotocin-induced diabetes in rats. Sixty-four adult male rats were divided into eight equal groups: control, P (100 mg/kg/day), Q (100 mg/kg/day), P + Q (100 mg/day for both), diabetes mellitus (DM) (single-dose 60 mg/kg streptozotocin), DM + P, DM + Q, and DM + P + Q. The rats were sacrificed, and blood and sciatic nerve tissues were collected. Blood glucose and malondialdehyde (MDA) levels increased, while IL-6 and total antioxidant status decreased in the DM group (p = 0.016 and p = 0.047, respectively). Ultrastructural findings showed degeneration of the axon and myelin sheath. The apoptotic index (AI %), TNF-α, and IL-1β immunopositivity increased significantly in the DM group (p < 0.001). Morphological structures approaching those of the controls were observed in the DM + P, DM + Q, and DM + P + Q groups. Morphometric measurements increased markedly in all treatment groups (p < 0.001), while blood glucose and MDA levels, AI (%), TNF-α, and IL-1β immunopositivity decreased. In conclusion, the combined effects of propolis and quercetin in diabetic neuropathy may provide optimal morphological protection with neuroprotective effects by reducing hyperglycemia, and these may represent a key alternative supplement in regenerative medicine.
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Affiliation(s)
- Sibel Türedi
- Department of Histology and Embryology, Faculty of Medicine, Harran University, Şanlıurfa 63050, Turkey
| | - Hakim Çelik
- Department of Physiology, Faculty of Medicine, Harran University, Şanlıurfa 63050, Turkey
| | - Şeyda Nur Dağlı
- Department of Physiology, Faculty of Medicine, İstinye University, İstanbul 34000, Turkey
| | - Seyhan Taşkın
- Department of Physiology, Faculty of Medicine, Harran University, Şanlıurfa 63050, Turkey
| | - Uğur Şeker
- Department of Histology and Embryology, Faculty of Medicine, Mardin Artuklu University, Mardin 47100, Turkey
| | - Mustafa Deniz
- Department of Anatomy, Faculty of Medicine, Harran University, Şanlıurfa 63050, Turkey
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Nergiz Y, Deveci E, Sak E, Evsen S, Tunik S, Nergiz Ş, Aşır F, Şeker U. Severe preeclampsia complicated by HELLP syndrome alters the structure of Hofbauer and syncytiotrophoblast cells: ultrastructural and immunohistochemical study. ASIAN BIOMED 2023; 17:238-243. [PMID: 37899759 PMCID: PMC10602634 DOI: 10.2478/abm-2023-0065] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2023]
Abstract
Background Hemolysis, elevated liver enzymes, low platelet count (HELLP) syndrome is generally considered to be a variant or complication of preeclampsia. It is a life-threatening obstetric complication. Objectives To evaluate the immunohistochemistry and ultrastructural of syncytiotrophoblastand Hoffbauer cells in placental villi of patients with HELLP syndrome. Methods Two groups of patients with a total of 50 full-term human placentas (n = 25 in each group) were assigned as the control (normotensive) and HELLP syndrome. Placental tissue samples were fixed in 10% neutral formalin and paraffin-embedding protocol was performed. We prepared 5 μm sections for histological and immunohistochemical staining. Sections were immunostained with Hoffbauer cell marker CD68. For transmission electron microscopy (TEM), placental tissue samples were fixed in 2.5% buffered glutaraldehyde and then, in 1% osmium tetroxide for routine ultrastructural examinations. Results When the HELLP group fetal placental sections were examined, intracytoplasmic edema in syncytiotrophoblast, degenerative vacuoles, and degenerative findings on cell surface membranes were observed. Moreover, villous edema was remarkable. The number of CD68-positive Hoffbauer cells per villus control group sections was 0.23 ± 0.02 and the number of CD68-positive cells per villus in HELLP group placenta sections was 0.83 ± 0.12. The increase in the number of Hoffbauer cells per villus in the HELLP group was significant (P < 0.001). Compared with the control group, there was a significant increase in the number of Hoffbauer cells and syncytiotrophoblasts in the HELLP group, and degenerative changes were also observed in the ultrastructure of these cells. Conclusions Pathology of the HELLP syndrome is in relation to CD68-positive placental macrophages.
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Affiliation(s)
- Yusuf Nergiz
- Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakır21280, Turkey
| | - Engin Deveci
- Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakır21280, Turkey
| | - Erdal Sak
- Department of Obstetrics and Gynecology, Faculty of Medicine, Dicle University, Diyarbakır21280, Turkey
| | - Sıddık Evsen
- Department of Obstetrics and Gynecology, Faculty of Medicine, Dicle University, Diyarbakır21280, Turkey
| | - Selçuk Tunik
- Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakır21280, Turkey
| | - Şebnem Nergiz
- Department of Microbiology, Atatürk Health High School, Dicle University, Diyarbakır21280, Turkey
| | - Fırat Aşır
- Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakır21280, Turkey
| | - Uğur Şeker
- Department of Histology and Embryology, Faculty of Medicine, Dicle University, Diyarbakır21280, Turkey
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Şener Akçora D, Erdoğan D, Take Kaplanoğlu G, Göktaş GE, Şeker U, Elmas Ç. Electron microscopic investigation of benzo(a)pyrene-induced alterations in the rat kidney tissue and the protective effects of curcumin. Ultrastruct Pathol 2022; 46:519-530. [DOI: 10.1080/01913123.2022.2152144] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dila Şener Akçora
- Department of Histology and Embryology, Faculty of Medicine, Bahcesehir University, Istanbul, Turkey
| | - Deniz Erdoğan
- Department of Histology and Embryology, Faculty of Medicine, Gazi University, Turkey
| | | | - Gül Eser Göktaş
- Department of Histology and Embryology, Faculty of Medicine, Lokman Hekim University, Turkey
| | - Uğur Şeker
- Department of Histology and Embryology, Faculty of Medicine, Harran University, Sanlıurfa, Turkey
| | - Çiğdem Elmas
- Department of Histology and Embryology, Faculty of Medicine, Gazi University, Turkey
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Baygeldi SB, Güzel BC, Şeker U. Colorimetric evaluation of cross-sectional silicone plastination of the Total head region of sheep and Deplastination of the histological sections of brain tissue. Anat Histol Embryol 2022; 51:542-548. [PMID: 35726566 DOI: 10.1111/ahe.12827] [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: 05/06/2022] [Revised: 05/21/2022] [Accepted: 05/31/2022] [Indexed: 12/01/2022]
Abstract
The aim of the study is to protect and preserve the cross-sectional diagnostic characteristics of the anatomy samples by using silicone plastination method, to examine them both macroscopically and microscopically, and to use them as an educational material. After the dissection procedures of 10 total sheep heads obtained from the slaughterhouse were completed, they were freshly frozen and sliced to prepare cross-sectional samples. Then, statistical analysis was performed after the colorimetric measurements. For microscopic examination, 30 brain samples were divided into three groups (Fresh-F, plastination-P, plastination/deplastination-P/D). Of the total brain samples, 20 were subject to routine plastination protocol. After the plastination/deplastination procedure, the changes occurring in cerebral histology were compared. In terms of tissue preservation, the effect of plastination and deplastination was examined using a light microscope. Plastinates subject to silicone plastination under room temperature were very similar to their natural appearance, and it was observed that they preserved their morphological features. Colour changes in the tissues were statistically evaluated. Volumetric shrinkages were observed as qualitative, especially in the brain. As a result of the evaluation done, it was seen that deplastination with toluene is not possible for the brain tissues. In addition, it was not possible to take cross sections of the plastinated tissues that were not deplastinated. On the contrary, findings regarding that deplastination with 5% sodium methoxide dissolved in methanol can allow microscopic examination in long-term preserved plastinated brain tissues were obtained.
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Affiliation(s)
- Saime Betül Baygeldi
- Department of Anatomy, Faculty of Veterinary Medicine, Fırat University, Elazig, Turkey
| | - Barış Can Güzel
- Department of Anatomy, Faculty of Veterinary Medicine, Fırat University, Elazig, Turkey
| | - Uğur Şeker
- Department of Histology and Embryology, Faculty of Medicine, Harran University, Sanliurfa, Turkey
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Dağ A, Fırat ET, Uysal E, Ketani MA, Şeker U. Morphological Changes Caused by Streptozotocin-Induced Diabetes in the Healthy Gingiva of Rats. Exp Clin Endocrinol Diabetes 2015; 124:167-72. [PMID: 26372845 DOI: 10.1055/s-0035-1559781] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
BACKGROUND AND OBJECTIVE Epidemiologic and clinical studies have indicated that diabetes is a risk factor for periodontal disease progression. The aim of the present study was to evaluate the morphological changes of gingiva in streptozotocin diabetic rats. MATERIAL AND METHODS 30 male Wistar rats that weighed 250-300 g were used in this study. The animals were randomly divided into 2 groups, one with streptozotocin-induced diabetes and another one with healthy (non-diabetic) animals. All rats were sacrificed after 21 days, and their maxillary first molars with surrounding tissues were observed morphological analyses. RESULTS In this study, it was observed that the epithelial thickness was greater in the diabetes group, compared to the control group. The statistical comparison of the diabetes and control groups for the thickness of each of the layers of the epithelium demonstrated that the thickness of the keratinized (corneum), granular and basal layers had significantly increased in the diabetic animals. Furthermore, the diabetes group displayed a decrease in the height of the connective tissue papillae, which was found to be statistically insignificant. Another important finding detected in the diabetes group was the congestion of the gingival capillaries, which showed that blood circulation is impaired in diabetes cases. CONCLUSION On the basis of the results obtained in this study, it was concluded that streptozotocin-induced diabetes may increase predisposition to periodontal disease by causing morphological changes in the periodontal tissues.
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Affiliation(s)
- A Dağ
- Department of Periodontology, Faculty of Dentistry, Dicle University, Diyarbakir, Turkey
| | - E T Fırat
- Department of Periodontology, Faculty of Dentistry, Dicle University, Diyarbakir, Turkey
| | - E Uysal
- Department of Computer Tech. Programs, Diyarbakir Vocational School, Dicle University, Diyarbakır, Turkey
| | - M A Ketani
- Department of Histology and Embryology, Faculty of Veterinary Medicine, Dicle University, Diyarbakir, Turkey
| | - U Şeker
- Faculty of Veterinary Medicine, Dicle University, Diyarbakir, Turkey
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