scholarly journals RADIOAUTOGRAPHIC STUDIES OF SULFATE-SULFUR (S35) METABOLISM IN THE ARTICULAR CARTILAGE AND BONE OF SUCKLING RATS

1952 ◽  
Vol 95 (5) ◽  
pp. 489-496 ◽  
Author(s):  
Dominic D. Dziewiatkowski
Keyword(s):  
Bone Marrow ◽  
Articular Cartilage ◽  
Alkaline Solution ◽  
Long Bones ◽  
Barium Salt ◽  
Middle Portion ◽  
High Concentration ◽  
Barium Ions ◽  
Sulfate Sulfur ◽  
Old Rats

Fifteen minutes after intraperitoneal injection of sulfur-35 as sodium sulfate to 7-day-old rats the concentration of the isotope was highest in the cartilage at the epiphyseal-diaphyseal junction of long bones but was demonstrable throughout the entire epiphysis. Up to the 24th hour the pattern of deposition did not change as the concentration continued to increase. As centers of secondary ossification developed, there occurred in them an increased concentration of some form of sulfur, insoluble as the barium salt. This sulfur was probably derived from the cartilage which the center of secondary ossification replaced. Up to about the 30th minute after injection the sulfur-35 was deposited transitorily in a high concentration in discrete loci of the bone marrow. Excluding this transitory deposition, the highest concentration of the radioisotope in the bone marrow was seen in the specimens removed 24 hours after administration. In the bone shaft the sulfur-35, in a form which was insoluble in an alkaline solution of barium ions, was deposited diffusely up to the 24th hour after its administration. Thereafter, the radioisotope decreased in concentration in the middle portion of the bone shaft. However, the concentration of a similarly characterized sulfur-35-bearing component in the ends of the diaphysis continued to increase up to at least the 96th hour after injection.

scholarly journals RADIOAUTOGRAPHIC VISUALIZATION OF SULFUR-35 DISPOSITION IN THE ARTICULAR CARTILAGE AND BONE OF SUCKLING RATS FOLLOWING INJECTION OF LABELED SODIUM SULFATE

1951 ◽  
Vol 93 (5) ◽  
pp. 451-458 ◽  
Author(s):  
Dominic D. Dziewiatkowski
Keyword(s):  
Bone Marrow ◽  
Articular Cartilage ◽  
Sodium Sulfate ◽  
Epiphyseal Cartilage ◽  
Barium Hydroxide ◽  
Post Injection ◽  
Tracer Isotope ◽  
Cartilage Cells ◽  
Old Rats ◽  
And Cartilage

The localization of sulfur-35 administered intraperitoneally as sodium sulfate to 7-day-old rats was determined by radioautography of sections of humeri and tibia-knee-femur combinations removed 24, 48, 96, 216, and 290 hours after injection of this isotope. Radioautography of sections of bone and cartilage that had been fixed in formalin indicated that the tracer isotope was present throughout the entire epiphysis. Its concentration therein was highest initially at the epiphyseal-diaphyseal junction where the more mature cartilage cells were present. By the 96th hour post injection the sulfur-35 had become more uniformly distributed in the epiphyses and an even distribution of it throughout the epiphyseal cartilage was almost attained by the 216th hour post injection. As centers of secondary ossification arose in the epiphyseal cartilage, the sulfur-35 appeared to diminish in concentration and disappear from these loci. However, radioautographs of cartilage fixed in formalin saturated with barium hydroxide, instead of in formalin only, disclosed the fact that the tracer isotope was still present in these loci. When bone and bone marrow were fixed in formalin the autographs indicated the presence of sulfur-35 primarily in the periosteum. Only a negligible amount appeared to be present in the bone shaft and marrow. However, when these tissues were fixed in formalin saturated with barium hydroxide it was possible to demonstrate the presence of the tracer isotope in both bone and bone marrow.

Calcium-Suppressed Technique in Dual-Layer Detector Computed Tomography to Evaluate Knee Articular Cartilage

2020 ◽  
Vol 16 ◽  
Author(s):  
Qinglin Meng ◽  
Mengqi Liu ◽  
Weiwei Deng ◽  
Ke Chen ◽  
Botao Wang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Marrow ◽  
Articular Cartilage ◽  
Bone Marrow Edema ◽  
Knee Joints ◽  
Infrapatellar Fat Pad ◽  
Proton Density ◽  
Knee Cartilage ◽  
Significant Difference ◽  
Marrow Edema

Background: Calcium-suppressed (CaSupp) technique involving spectral-based images has been used to observe bone marrow edema by removing calcium components from the image. Objective: This study aimed to evaluate the knee articular cartilage using the CaSupp technique in dual-layer detector computed tomography (DLCT). Methods: Twenty-eight healthy participants and two patients with osteoarthritis were enrolled, who underwent DLCT and magnetic resonance imaging (MRI) examination. CaSupp images were reconstructed from spectral-based images using a calcium suppression algorithm and were overlaid conventional CT images for visual evaluation. The morphology of the knee cartilage was evaluated, and the thickness of the articular cartilage was measured on sagittal proton density– weighted and CaSupp images in the patellofemoral compartment. Results: No abnormal signal or density, cartilage defect, and subjacent bone ulceration were observed in the lateral and medial femorotibial compartments and the patellofemoral compartment on MRI images and CaSupp images for the 48 normal knee joints. CaSupp images could clearly identify cartilage thinning, defect, subjacent bone marrow edema, and edema of the infrapatellar fat pad in the same way as MRI images in the three knee joints with osteoarthritis. A significant difference was found in the mean thickness of the patellar cartilage between MRI images and CaSupp images, while the femoral cartilage presented no significant difference in thickness between MRI images and CaSupp images over all 48 knee joints. Conclusion: The present study demonstrated that CaSupp images could effectively be used to perform the visual and quantitative assessment of knee cartilage.

Effect of yerba mate on bone marrow adipocytes and on biomechanics of long bones in ovariectomized rats

Bone ◽  
2016 ◽  
Vol 83 ◽  
pp. 280-281
Author(s):  
M.T. Nervegna ◽  
M. Lewicki ◽  
J. Rodriguez ◽  
C. Bozzini ◽  
P.M. Mandalunis
Keyword(s):  
Bone Marrow ◽  
Ovariectomized Rats ◽  
Long Bones ◽  
Yerba Mate ◽  
Bone Marrow Adipocytes

Neuroprotective effect of bone marrow derived mesenchymal stem cell secretome in 6-OHDA-induced Parkinson's disease

2021 ◽  
Author(s):  
Dhruv Mahendru ◽  
Ashish Jain ◽  
Seema Bansal ◽  
Deepti Malik ◽  
Neha Dhir ◽  
...  
Keyword(s):  
Parkinson’S Disease ◽  
Stem Cells ◽  
Bone Marrow ◽  
Parkinson's Disease ◽  
Mesenchymal Stem Cells ◽  
Stem Cell ◽  
Neuroprotective Effect ◽  
Behavioral Parameters ◽  
Old Rats ◽  
6 Hydroxydopamine

Aim: The aim of the study was to evaluate the neuroprotective effect of bone marrow stem cell secretome in the 6-hydroxydopamine (6-OHDA) model of Parkinson's disease. Materials & methods: Secretome prepared from mesenchymal stem cells of 3-month-old rats was injected daily for 7 days between days 7 and 14 after 6-OHDA administration. After 14 days, various neurobehavioral parameters were conducted. These behavioral parameters were further correlated with biochemical and molecular findings. Results & conclusion: Impaired neurobehavioral parameters and increased inflammatory, oxidative stress and apoptotic markers in the 6-OHDA group were significantly modulated by secretome-treated rats. In conclusion, mesenchymal stem cells-derived secretome could be further explored for the management of Parkinson's disease.

Influence of bone marrow on osseointegration in long bones: an experimental study in sheep

2014 ◽  
Vol 26 (3) ◽  
pp. 300-306 ◽  
Author(s):  
Fabrizio Morelli ◽  
Niklaus P. Lang ◽  
Franco Bengazi ◽  
Davide Baffone ◽  
C. Dadonim Vila Morales ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Experimental Study ◽  
Long Bones

scholarly journals BM-MSCs differentiated to chondrocytes for treatment of full-thickness cartilage defect of the knee

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Rodrigo Mardones ◽  
Alessio Giai Via ◽  
Gennaro Pipino ◽  
Claudio M. Jofre ◽  
Sara Muñoz ◽  
...  
Keyword(s):  
Bone Marrow ◽  
Articular Cartilage ◽  
Cartilage Defect ◽  
Collagen Type ◽  
Oxford Knee Score ◽  
Collagen Type I ◽  
Type I ◽  
Knee Score ◽  
Full Thickness

Abstract Background Full-thickness articular cartilage injury of the knee is a major cause of disability. The aim of this study is to assess the outcome of patients treated with differentiated to chondrocytes bone marrow mesenchymal stem cells (BM-MSCs) cultured on a collagen type I/III (Chondro-Gide®) scaffold. The secondary aim was to confirm the absence of adverse events. Methods Fifteen patients (19 knees) with symptomatic full-thickness cartilage defects of the knee were enrolled. Bone marrow was harvested from the iliac crest, BM-MSCs were prepared, and expanded cells were grown in a standard medium or in a standard culture medium containing TGF-β. BM-MSCs differentiated to chondrocytes were seeded in a porcine collagen type I/III scaffold (Chondro-Gide®) and cultured in TGF-β containing media. After 4 weeks, the membrane was sutured on the cartilage defect. All patients underwent plain radiographs (antero-posterior, lateral, and axial view of the patella) and MRI of the affected knee. The Oxford knee score, the Lyhsolm scale, and the VAS score were administered to all patients. At final follow-up a MRI for the study of articular cartilage was undertaken. Results The mean size of the cartilage lesions was 20 × 17 mm (range, 15 × 10 mm–30 × 30 mm). At final follow-up, the median Oxford knee score and Lyhsolm scale scores significantly improved from 29 (range 12–39; SD 7.39) to 45 (range 24–48; SD 5.6) and from 55.5 (range 25–81; SD 17.7) to 94.5 (58–100; SD 10.8), respectively. Pain, according to the VAS score, significantly improved. Sixty percent of patients reported their satisfaction as excellent, 20% as good, 14% as fair, and 1 patient as poor. Conclusion The treatment of full-thickness chondral injuries of the knee with differentiated to chondrocytes BM-MSCs and Chondro-Gide® scaffold showed encouraging outcomes. Further studies involving more patients, and with longer follow-up, are required to evaluate the effectiveness of the treatment and the long-term results.

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