Selectively Tracking Nanoparticles in Aquatic Plant Using Core-Shell Nanoparticle-Enhanced Raman Spectroscopy Imaging.

Nanoparticles contribute to enormous environmental processes, but, due to analytical challenges, the understanding of nanoparticle fate remains elusive in complex environmental matrices. To address the challenge, a core-shell nanoparticle-enhanced Raman spectroscopy (CSNERS) imaging method was developed to selectively track prevalent SiO nanoparticles in an aquatic plant, . By encapsulating gold nanoparticles and Raman reporters inside, the resonance Raman signature was enhanced, thus enabling the sensitive and selective detection of SiO nanoparticles at an environmentally relevant concentration.

[Treatment of intercondylar fracture of the humerus through internal and external elbow approach or elbow posterior olecranon osteotomy approach].

Objective: To investigate the efficacy, advantages and disadvantages of internal and external elbow joint approach and olecranon osteotomy approach for the treatment of intercondylar fracture of humerus.

Methods: From October 2012 to May 2016, 18 cases of intercondylar fracture of humerus were treated by operation including 12 males and 6 females with a mean age of 33.5 years old (ranged from 4 to 56 years old); 8 cases were operated by internal and external elbow joint approach, 10 cases were operated by olecranon osteotomy approach.

Serum Gamma-glutamyl Transferase Levels Predict Functional Outcomes after Aneurysmal Subarachnoid Hemorrhage.

Objective: We aim to explore the potential association between serum gamma-glutamyl transferase levels and functional outcome after aneurysmal subarachnoid hemorrhage in a Chinese population.

Methods: A total of 386 aneurysmal subarachnoid hemorrhage patients were included in the study from September 2007 to February 2015. Baseline serum gamma-glutamyl transferase levels and 6-month follow-up functional outcomes were determined.

Early osseointegration of implants with cortex-like TiO coatings formed by micro-arc oxidation: A histomorphometric study in rabbits.

In our previous studies, a novel cortex-like TiO coating was prepared on Ti surface through micro-arc oxidation (MAO) by using sodium tetraborate as electrolyte, and the effects of the coating on cell attachment were testified. This study aimed to investigate the effects of this cortex-like MAO coating on osseointegration. A sand-blasting and acid-etching (SLA) coating that has been widely used in clinical practice served as control.

The Past, Present, and Future of Dentoalveolar Surgery in China.

Dentoalveolar surgery, formerly known as dental surgery or oral surgery, is one of the basic branches of oral and maxillofacial surgery. While it has a long history; however, there are great differences in its evolution globally. This article presents a brief review on the development of dentoalveolar surgery internationally.

Influence of the lateral pterygoid muscle on traumatic temporomandibular joint bony ankylosis.

Background: The pathogenesis of traumatic TMJ ankylosis remains unclear. This study aimed to verify the role of the lateral pterygoid muscle in the pathogenesis of traumatic temporomandibular joint (TMJ) bony ankylosis.

Methods: Eight 6-month-old male sheep were used in this study.

[Pain and prevention in extraction of the mandibular third molar].

Objective: To study the post-operative pain-re1ated factors in lower third molar extraction, and to find an effective prevention program.

Methods: The first phase of the study was a clinical follow-up of 450 cases of lower third molar extraction. Factors associated with post-operative pain were analyzed, and difficulty assessment protocol of the tooth extinction was build.

In vivo self-expanding engineering of bone.

In vivo bone formation and vascularization are interdependent process with complex regulatory mechanism. In vitro tissue engineering has meet great difficulty to copy all internal environment conditions, and the technology worked well only for relatively simple, thin tissues such as skin and cartilage that do not depend on a well-formed network of blood vessels to deliver food and oxygen. For more complex tissue of bone segments shot through with vessels, we hypothesize that an altered strategy might be effective: starting from in vitro tissue engineering for a thin sheet of primary product, then transferring to in vivo cultivation with a self-expanding procedure activated by interweaving metal springs of shape memory alloy (SMA).

Transport distraction osteogenesis using nitinol spring: an exploration in canine mandible.

Some experiments in rabbits have presented the potential feasibility of using shape memory alloy spring for continuous distraction osteogenesis. To confirm the effectiveness of such method, we established canine models for the exploratory experiments of transport distraction osteogenesis using nitinol springs. Simple devices, including an internal 60-mm long sinusoid-shaped nitinol springs were used in the study.

[Bone mineral density and biomechanical characters of the augmented alveolar ridge by distraction osteogenesis using Ti-Ni shape memory alloy distractor].

Objective: To evaluate the quality of the alveolar ridge augmented by Ti-Ni shape memory alloy (Ti-Ni SMA) distractor.

Methods: All of the mandibular premolars and the first molars were extracted from 12 adult mongrel canines. One month later, box-shaped osteotomy was carried out in the left mandibles and Ti-Ni SMA distractors were imbedded.

[Segmental mandibular reconstruction by elasticity distraction osteogenesis associated with guided bone regeneration].

Objective: To accelerate distraction osteogenesis by utilizing guided bone regeneration technique, and to improve the automatic process of canine segmental mandibular reconstruction by elasticity distraction osteogenesis using shape memory metal alloy distractor.

Methods: Adult hybrid canines were used. Osteotomy was performed to remove a bone segment of 2.

[Design and application of internal devices for automatic elasticity distraction osteogenesis].

Objective: To improve the design of the devices used for autoatic elasticity distraction osteogenesis, and to preliminarily testify their feasibility for clinical application.

Methods: The internal automatic distraction devices were constructed by three parts, including sinusoid shape memory alloy distractor, reconstructive plate and mini-plate. The animal model of trifocal bone transport reconstruction of canine mandibular mentis was duplicated, in which a 6 cm mandibular mentis segment was removed and the transport disc was created by osteotomy in both ends of the mandibular defect.

[Effects of different TiNi-SMA distractor on the height of alveolar ridge augmentation].

Objective: To discuss the effects of titanium nickel shape memory alloy (TiNi-SMA) distractor with different stretching force and different distance between two fixed ends on the height of alveolar ridge augmentation.

Methods: The mini distractors were all made of TiNi-SMA wire. The maximum stretching force and the distance between two fixed ends according to different distractors (A, B and C) were 20 mm, 700 g; 15 mm, 1000 g; 20 mm, 1000 g.

Effect of hepatoma H22 on lymphatic endothelium in vitro.

Aim: To determine the effect of metastatic hepatoma cells on lymphangioma-derived endothelium, and to establish in vitro model systems for assessing metastasis-related response of lymphatic endothelium.

Methods: Benign lymphangioma, induced by intraperitoneal injection of the incomplete Freund's adjuvant in BALB/c mice, was embedded in fibrin gel or digested and then cultured in the conditioned medium derived from hepatoma H22. Light and electron microscopy, and the transwell migration assay were used to determine the effect of H22 on tissue or cell culture.

Rapid lengthening of rabbit mandibular ramus by using nitinol spring: a preliminary study.

Nitinol is well known for its shape memory and superelasticity, which means it can return to its original shape from large deflections and produce moderate forces in the process. Based on these characteristics, the authors attempted to use an internal Nitinol spring for automatic lengthening of mandibular ramus. Twenty adult white rabbits underwent transverse osteotomy in unilateral mandibular ramus to remove a 15.

[Le Fort III osteotomy and medium position distraction for mid-facial hypoplasia].

Objective: To probe the possibility of distraction osteogenesis for correction of mid-facial hypplasia using a new technique.

Methods: The distraction system of mid-facial skeleton consisted of a face-bow, the elastic loops and a device that hitched to bone holes made in the aperture rim. Flllowing Le Fort III osteotomy, a bone hole was drilled at each side of the external-inferior rim of the aperture by a dental bur.

[Reconstruction of segmental mandibular defect of canine using titanium-nickel distractor].

Objective: To establish a continuous and automatic distraction osteogenesis technique in reconstruction of segmental mandibular defect by using embedded titanium-nickel alloy distractor with characteristics of shape-memory and super-elasticity.

Methods: Adult hybrid canines were used as the animal model. Segmental defects of 1-3 cm in the body of mandible were created by surgical osteotomy.

[Induction of lymphangiogenesis by mouse ascites hepatoma cell H22 in vitro].

Objective: To construct lymphangiogenesis model of Balb/c mouse in vitro to observe the impact of mouse ascites hepatoma cell H22 on the lymphangiogenesis and lymphatic endothelial proliferation.

Methods: Intraperitoneal benign lymphangioma induced by incomplete Freund's adjuvant in Balb/c mouse was harvested and embedded in fibrin gel to culture in vitro with conditioned medium (CM) of H22 cell. The gels, observed by inverted microscope and transmission electron microscope, were then digested to separate the cells.