N-methyl-d-aspartate (NMDA) modulates the spermatogenesis process through stimulating the steroid hormone biosynthesis. The aim of this study was to evaluate the effects of NMDA receptors agonists (d-Serine) and antagonists (MK801) on spermatogonia differentiation on decellularization testicular matrix (DTM) hydrogel scaffold. Four treatment groups were planned: 2D + D-Serine, 3D + D-Serine, 2D + MK801, and 3D + MK801. Results showed that cell viability was significantly decreased after 48 h in the 3D + D-Serine group and after 24 and 48 h in the 3D + MK801 group compared to the controls. The spermatogonia proliferation after two, four, and eight weeks was significantly increased in the 3D + D-Serine culture, while it was significantly reduced in the 2D + MK801 and 3D + MK801 groups after four and eight weeks. Real-time PCR results demonstrated that pre-meiotic gene (Plzf) expression was significantly increased only in the 3D + D-Serine culture compared to the control groups after four weeks of culture. The meiotic gene (Sycp3) expression was significantly increased in the 2D + D-Serine and 3D + D-Serine compared to the 2D controls after four and eight weeks. The post-meiotic gene (Tnp1) level in the 3D + D-Serine was significantly higher than the other groups. Flow-cytometry results indicated that the protein expression of Plzf (after four and eight weeks), Sycp3 (after eight weeks), and Tnp1 (after eight weeks) in the d-Serine-treated groups was significantly increased compared with the 2D control groups. There were not any significant changes in the gene expression of spermatogenic-related markers in MK801 culture media. However, a significant decrease in the protein levels of Plzf after eight weeks and Sycp3 after four and eight weeks was observed. In conclusion, the addition of NMDARs agonists (d-Serine) could be used to regulate the differentiation of spermatogonia in the 3D culture system.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1016/j.theriogenology.2022.08.004 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
The dark side of the fibroblastic sleeve: Case report and literature review.
J Vasc Access
December 2024
Clinical Department of Medical, Surgical and Health Sciences, University of Trieste, Trieste, Italy.
The fibroblastic sleeve is a structure potentially enveloping any intravascular device. At ultrasound scan, it typically presents as a thin layer of variably echogenic material covering the catheter surface, which usually tends to remain into the vessel after the catheter removal. However, several case reports have documented its migration toward the heart or pulmonary artery after a central venous catheter removal.
View Article and Find Full Text PDFImmune checkpoint inhibitor-associated diabetic ketoacidosis and insulin-dependent diabetes: a case report.
J Med Case Rep
December 2024
Emergency Medicine, Vancouver General Hospital, Vancouver, Canada.
Background: Immunotherapy, including the use of immune checkpoint inhibitors such as nivolumab, is increasingly common in cancer treatment and can lead to various immune-related adverse effects, including rare cases of diabetic ketoacidosis. This case report highlights an unique instance of nivolumab-induced diabetic ketoacidosis in a patient without prior history of diabetes, emphasizing the importance of careful monitoring even in those without traditional risk factors.
Case Presentation: We report a case of a 70-year-old Caucasian male with metastatic esophageal adenocarcinoma who developed diabetic ketoacidosis 3 weeks after stopping nivolumab therapy.
Is perioperative use of a combination of pregabalin and naproxen superior to naproxen only in reducing pain in ankle fractures? A prospective, randomized, multicenter study.
J Orthop Surg Res
December 2024
Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul, 03722, Korea.
Purpose: To compare the analgesic efficacy, adverse effects, and long-term functional outcomes of perioperative naproxen alone versus naproxen with pregabalin for treating pain in ankle fractures.
Methods: This study included 70 patients who underwent operative fixation of rotatory ankle fractures. Group A received naproxen 500 mg only, and Group B received naproxen 500 mg with pregabalin 75 mg 2-hour before surgery and 12 hourly for 14 days thereafter.
Development of a quantitative assessment for abnormal flexor synergy index in patients with stroke: a validity and responsiveness study.
J Neuroeng Rehabil
December 2024
Department of Rehabilitation Medicine, Keio University School of Medicine, 35 Shinanomachi, Shinjuku-ku, Tokyo, 160-8582, Japan.
Background: Arm-lifting movements (shoulder flexion) are essential for upper extremity rehabilitation after a stroke. Abnormal flexor synergy (elbow flexion) is frequently observed during shoulder flexion, impeding functional improvement. However, no quantitative method exists for assessing abnormal flexor synergy.
View Article and Find Full Text PDFSurgical treatment of AO/OTA 41B3 and 41C tibial plateau fractures with a temporary bi-frame fixator combined with the MIPPO technique.
BMC Musculoskelet Disord
December 2024
Department of Orthopaedics and Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, 54 Youdian Road, Shangcheng District, Hangzhou, 310006, China.
Background: This study evaluated the clinical effects of the use of a temporary bi-frame fixator in conjunction with minimally invasive percutaneous plate osteosynthesis (MIPPO) for treating AO/OTA 41B3 and 41C tibial plateau fractures (TPFs).
Methods: This was a retrospective analysis of 30 patients with TPFs affected by vertical compression seen from October 2019 to October 2020. All patients were treated with a bi-frame fixator to correct the vertical shortening deformity, with the MIPPO technique used after reduction.
Want AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!