The implantation of the foldable multifocal intraocular lens,a new pseudophakia intraocular substitute,needs only a small incision and the post-operative complications are rare.The incoming light can be refracted into several fo-cuses.Improved visual acuities both for far and near distance are obtained,which downregulated the glasses-wearing rate.This article summarizes the theories and designs,implantation,clinical application,theropeutic outcomes,and complications of this type of multifocal intraocular lens.

Objective: To study the morphologic differences and nutritional components of the natural and broken Masson pine pollen. Methods: Pure pollen was collected from Masson pine (Pinus Massoniana Lamb) and the dry pollen was broken by high speed low temperature air flow technique. Their morphologic changes were observed under scan electronic microscopy. The nutritional components of pollen were analyzed.Results: The pollen particle consists of two air bags and one main part, like a mushroom cap. The main morphologic change of broken pollen was that the air bags were separated from pollen particles, and the main part of pollen particles became enriched. The physical characteristics of pollen were changed in container and its fluidity was lost. The broken pollen had very strong adhesiveness. So it could not fly like natural pollen. In broken pollen, the rough fiber, cellulose and semi cellulose contents decreased significantly. Total energy, total lipid, and starch contents increased remarkably. The water soluble and fat soluble components also increased greatly. The total amino acids content of broken pollen was higher than natural pollen except Cys, Arg and Met, and free amino acids were also higher except Cys, Gly and Met. In broken pollen, the amount of lipids extracted by ether increased sharply, nearly 7 times more than natural pollen.Conclusion: It is considered that some nutritional components of natural pollen can be released after broken. Because most of the lipids in pollen are easily oxidized, broken pollen can not be stored for long time.

Dental Implantation ; Dental Scaling ; Diabetes Mellitus, Type 2 ; complications ; Guided Tissue Regeneration, Periodontal ; Humans ; Male ; Middle Aged ; Periodontitis ; diagnostic imaging ; etiology ; therapy ; Radiography, Panoramic

Acupuncture Points ; Acupuncture Therapy ; Adolescent ; Adult ; Aged ; Chest Pain ; therapy ; Exercise Therapy ; Female ; Humans ; Male ; Middle Aged ; Young Adult

Female ; Humans ; Hyperkeratosis, Epidermolytic ; pathology ; Infant, Newborn

The volatile oil is the main component in the leaves of Perilla frutescens. According to the main types of monoterpenoids or aromatic compounds, it can be divided into different chemotypes and the main chemotypes of Chinese producing Perilla are PA type (mainly containing Perilla aldehyde and limonene), PK type (mainly containing perillaketone) and PP type (subdivided as PP-a type, with apiole as its main component; PP-m type, with myristicin as its main component; PP-e type, with elemicin as main component; PP-as type, with asarone as main component). Based on the biosynthetic pathways analysis, we also found that the formation of the particular chemotype is usually controlled by a single gene or a few genes, and different types have different pharmacological effects. In this paper, the classification under the species P. frutescens, main chemotypes of the volatile oil, and their biogenesis and regulation, pharmacological effect and influence factors are summarized and reviewed.
Animals ; Humans ; Oils, Volatile ; analysis ; pharmacology ; toxicity ; Perilla frutescens ; chemistry ; classification ; metabolism ; Plant Leaves ; chemistry

Humans ; Oral Surgical Procedures ; education ; methods ; Surgery, Oral ; education ; manpower ; trends

Objective: To explore levels of salivary IgA, lysozyme, lactate dehydrogenase, alkaline phosphatase and total proteins in unstimulated (UWS) and stimulated (SWS) whole saliva of caries-free children. Methods: 94 caries-free children, aged from 42 to 54 months, were recruited from urban kindergartens in Beijing. 2 ml UWS and 2 ml SWS were collected from each child to measure salivary IgA, lysozyme, lactate dehydrogenase, alkaline phosphatase and total proteins. Results:1) There were no differences in salivary proteins between boys and girls in both UWS and SWS, except total proteins. In UWS, the concentration of total proteins in girls was lower than that in boys (P0.05). 2) The concentration of IgA in SWS was significantly lower than that in UWS (P0.05). Conclusion:In 3-to 4-year old children, the protein composition in stimulated whole saliva is different from that in unstimulated whole saliva, and it is also different between genders. Therefore, it is more reliable to measure salivary proteins in both UWS and SWS when studying saliva of children.

AIM: To evaluate the antioxidant activity of naringenin in human retinal pigment epithelium (ARPE-19) cells andhuman umbilical vein endothelial cells (HUVEC).·METHODS: MTT assay was used to measure theviability and proliferation of ARPE-19 cells and HUVEC.·RESULTS: Three and 10mg/L naringenin significantlyincreased the proliferation of ARPE-19 cells by 10.8% and11.4%, respectively. Ten mg/L naringenin increasedhypoxia-, 0.3mmol/L NAN3-, and 200μmol/L H2O2- induced damage of ARPE-19 cells by 55.2%, 69.2%, and50.3%, respectively. One mg/L naringenin increased theviability of 50μmol/L t-BHP-, and 30mg/L NalO3-treatedARPE-19 cells by 20.2% and 30.4%, respectively. Thirtymg/L naringenin also increased the proliferation of50μmol/L t-BHP-treated ARPE-19 cells by 32.2%, and1mg/L naringenin increased the proliferation of 30, 100and 300 mg/L NalO3-treated ARPE-19 cells by 30.3%,10.3% and 18.5%, respectively. The reduction of HUVECwas 23.9%, 70.4% and 77.9% in the 3, 10 and 30mg/Lnaringenin-treated groups, respectively. Furthermore, 1and 3mg/L naringenin increased hypoxia-induced damagein HUVEC by 10.7% and 13.1%, and 300mg/L NalO3- induced damage in HUVEC by 41.2% and 37.7%. Threemg/L naringenin increased 200 and 400μmol/L H2O2-in-jured HUVEC by 20.1% and 21.5%, respectively.·CONCLUSION: Naringenin increases the proliferation ofARPE-19 cells and inhibites the growth of HUVEC, and haspotent antioxidant activity in ARPE-19 cells and HUVEC.

Objective To study the effects of calcitonin on bone mineral density(BMD), bone strength and bone fragile fracture in osteoporosis. Methods This is a one year, single centered, prospective and randomized, opening study: 135 patients with osteoporosis were divided into calcitonin+calcium group and calcium group. Patients of calcitonin+calcium group received salmon calcitonin(Miacalcic was injected intramuscularly, 50 IU/day in first week, 50 IU/two days in second week and 50 IU/twice/week later) and calcium(calcium 600 mg/day), patients in another group received calcium(calcium 600 mg/day). The determination markers included serum calcium, serum phosphate, serum alkline phosphatase, osteocalcin and urine hydroxyproline before and after treatment, at same time all patients were examined by DEXA(lumbar, hip) and QUS(radius, tibia). Results After 1 year treatment, 53 patients of calcitonin+calcium group and 59 patients of calcium group were followed up. In calcitonin+calcium group, BMD of lumbar spine increased about 1%(P