Long-term observation of vitrectomy without subretinal hemorrhage management for massive vitreous hemorrhage secondary to polypoidal choroidal vasculopathy.

Aim: To describe the long-term observation of vitrectomy without subretinal hemorrhage (SRH) management for massive vitreous hemorrhage (VH) secondary to polypoidal choroidal vasculopathy (PCV).

Methods: This is a retrospective, consecutive case series. A total of 86 eyes of 86 patients with >14d of massive VH associated with PCV were included.

[Population dynamics of ground carabid beetles and spiders in a wheat field along the wheat-alfalfa interface and their response to alfalfa mowing].

Taking the wheat-alfalfa and wheat-wheat interfaces as model systems, sampling points were set by the method of pitfall trapping in the wheat field at the distances of 3 m, 6 m, 9 m, 12 m, 15 m, 18 m, 21 m, 24 m, and 27 m from the interface. The species composition and abundance of ground carabid beetles and spiders captured in pitfalls were investigated. The results showed that, to some extent there was an edge effect on species diversity and abundance of ground carabid beetles and spiders along the two interfaces.

Expression of the chemokine CCL28 in pleomorphic adenoma and adenolymphoma of the human salivary glands.

Recent studies have proposed that the chemokine CCL28 is constitutively expressed by epithelial cells in salivary glands and play an important role in lymphocyte trafficking in oral immunity. To date, there is little information on the expression pattern of CCL28 in salivary gland tumors. The purpose of this study was to determine the expression of CCL28 in pleomorphic adenoma and adenolymphoma and to evaluate its potential function in regulating oral carcinogenesis.

[Fourier transform infrared spectroscopy and FT-Raman spectrometer study of hyperdispersant on atrazine surface].

The main methods in performing the study of the adsorption properties of hyperdispersant on atrazine surface were fourier transform infrared spectroscopy (FTIR) and FT-Raman spectrometer (FT-Raman), and the results suggested that the hydrogen bond force was the main force combining the surface of atrazine particles and the dispersant. And it also promoted the adsorption of dispersant on atrazine particles. However, the information of what accurate quantity of the dispersant adsorbed on the surface of atrazine should a successful suspension ability of the suspension concentrate acquire is still not available.

[The factors influencing the flexural strength of zirconia ceramic restorations].

Zirconia material has a very broad application prospect in prosthodontics,and restorations made of zirconia through CAD/CAM technology have been applied widely in recent years. In this paper we summarized the features of zirconia material which used for all ceramic restorations and the factors which affected its flexural property. We also sated the relevant indicators and methods used for evaluation of flexural property of zirconia material in order to lay a basis for its clinical use.

[The experimental research of the influence of cervical settling method on marginal accuracy of wax patter].

Objective: To study the influence of cervical settling method on marginal accuracy of wax patters.

Methods: 24 wax patterns were made on the standard cast specimens and round capsules of which twelve patters were made with the method of cervical settling (experiment group), twelve patters were made with the method of wax dripping (control group). Marginal accuracy of patterns were measured before sublation, sublation half an hour and twenty-four hours.

Multiple gene polymorphisms in the complement factor h gene are associated with exudative age-related macular degeneration in chinese.

Purpose: Variants in the complement factor H (CFH) gene have been shown to be strongly associated with age-related macular degeneration (AMD). In this study, sequence alterations in CFH were investigated in 163 Chinese patients with exudative AMD and 155 unrelated Chinese control subjects.

Methods: All the 22 CFH exons, intron-exon boundaries, and promoter sequences were screened by polymerase chain reaction and DNA sequencing.

Association of CTLA-4 and IL-13 gene polymorphisms with Graves' disease and ophthalmopathy in Chinese children.

Purpose: The frequency of childhood Graves' disease (GD) in Hong Kong Chinese is among the highest in the world but childhood Graves' ophthalmopathy (GO) appears to have milder clinical severity than does the adult disease. This study was conducted to investigate CTLA-4 and IL-13 polymorphisms in Chinese pediatric patients with GD and GO.

Methods: Recruited for the study were 177 childhood patients with GD (age range, 2-16 years) and 151 unrelated control subjects (age range, 4-16 years) for genotype analysis of IL-13 single-nucleotide polymorphisms (SNPs) (-1112C/T and 2044G/A), CTLA-4 SNPs (-318C/T, 49A/G, and CT60A/G), and the repeat length of (AT)n in the 3' untranslated region (UTR) of CTLA-4.

[Research advances of adult stem cells and dental stem cells].

Human stem cells have a major effect in the development of human bodies. Acting as an in vitro model, human stem cells have a great value in the study of the mechanism of individual development and in the cell-replacement treatments and gene therapy of tissue deficiency diseases. The study of stem cells has been given rise to a keen interests in the bio-medical area at present.

[Experimental study of the effect on marginal seating of the castings by different investing methods].

Objective: The purpose of this study was to observe the effect on marginal seating of the castings with and without ring investments.

Methods: Standarded as-cast specimens and round capsules simulated post tooth crowns were made. 12 wax pattern were prepared on the as-cast specimens.