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32) We implanted calcium phosphate porous ceramics alone or composites of the ceramics and bone marrow stromal cells (BMSCs) into the bone defect (mandibular symphysis) to examine whether it could be filled with new bone tissue, resulting in bone union.
2015 Journal of tissue engineering and regenerative medicine
* Unique and reliable rat model for the assessment of cell therapy: bone union in the rat mandibular symphysis using bone marrow stromal cells.
- Many kinds of bone graft materials have been developed and reported to repair various bone defects. The defects are usually created by surgical resection of pre-existing bone tissue. However, spontaneous healing of bone defects without implantation of materials could be seen, because bone tissue possesses inherent repairing property. The central portion of the lower jaw bone in many animals consists of fibrous tissue and is called the mandibular symphysis. It persists even in old animals and thus can be interpreted as a physiological bone gap or a non-healing bone defect. We implanted calcium phosphate porous ceramics alone or composites of the ceramics and bone marrow stromal cells (BMSCs) into the bone defect (mandibular symphysis) to examine whether it could be filled with new bone tissue, resulting in bone union. Eight weeks after implantation, micro-computed tomography (micro-CT) and histological and biomechanical analyses demonstrated that bone union of the mandibles occurred in all rats with composites but in none of those with ceramics alone. These results showed that the rat mandibular symphysis is a unique bone defect site for the evaluation of bone graft materials. These analyses demonstrated that ceramics alone could not contribute to bone healing in the defect; however, supplementation with BMSCs drastically changed the properties of the ceramics (turning them into osteogenic ceramics), which completely healed the defect. As BMSCs can be culture-expanded using small amounts of bone marrow, the use of the composites might have clinical significance for the reconstruction of various bone tissues, including facial bone.
=>新発見の, 新しい, 現代的な, 新参の
Overview of adj new
The adj new has 11 senses (first 5 from tagged texts)
1. (310) new -- (not of long duration; having just (or relatively recently) come into being or been
made or acquired or discovered; "a new law"; "new cars"; "a new comet"; "a new friend"; "a new
year"; "the New World")
2. (36) fresh, new, novel -- (original and of a kind not seen before; "the computer produced a
completely novel proof of a well-known theorem")
3. (11) raw, new -- (lacking training or experience; "the new men were eager to fight"; "raw
recruits")
4. (5) new, unexampled -- (having no previous example or precedent or parallel; "a time of
unexampled prosperity")
5. (3) new -- (other than the former one(s); different; "they now have a new leaders"; "my new car
is four years old but has only 15,000 miles on it"; "ready to take a new direction")
6. new -- (unaffected by use or exposure; "it looks like new")
7. newfangled, new -- ((of a new kind or fashion) gratuitously new; "newfangled ideas"; "she buys
all these new-fangled machines and never uses them")
8. New -- (in use after medieval times; "New Eqyptian was the language of the 18th to 21st
dynasties")
9. Modern, New -- (used of a living language; being the current stage in its development; "Modern
English"; "New Hebrew is Israeli Hebrew")
10. new, young -- ((of crops) harvested at an early stage of development; before complete maturity;
"new potatoes"; "young corn")
11. new -- (unfamiliar; "new experiences"; "experiences new to him"; "errors of someone new to the
job")
Overview of adv new
The adv new has 1 sense (first 1 from tagged texts)
1. (1) newly, freshly, fresh, new -- (very recently; "they are newly married"; "newly raised
objections"; "a newly arranged hairdo"; "grass new washed by the rain"; "a freshly cleaned floor";
"we are fresh out of tomatoes")
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