Retinal pigment epithelium ( RPE ) is a vital tissue for the maintenance of photoreceptor function and environment of outer retina, also the predominant cell type of proliferative vitreoretinopathy ( PVR ) . lt is also affected by many diseases of the retina and choroid, including diabetic retinopathy ( DR) , age-related macular degeneration ( AMD ) and retinal pigmentosa ( RP ) . Although of neural origin, the RPE is capable of local repair, and cells may migrate and take on altered characteristics. These findings indicate that RPE-based therapy is a promising option for congenital or degenerate disease of the retina.

Objective To study influences of magnetic field on behavior of depressive rats under chronic unpredictable mild stress,and possible mechanisms under such phenomena.Methods Thirty-six Wistar rats were divided into model group,magnetic field group and control group (n =12 in each group) according to random number table.The model group and the magnetic field group received CUMS stimulation daily for 5 weeks,while the control group received no any treatment.At the end of the fifth week,rats in the magnetic field group were placed in the center of a magnetic machine (400 mT),and the model group was raised freely for4 weeks.The severity of depressive behaviors,cortisol levels and contents of C-reactive protein in blood and urine sample were tested pre-treatment,at the end of 5 weeks and 9 weeks.Results After 5 weeks,consumption of glucose solution of the control group was higher than the other two groups (P ＜ 0.05).After 5 and 9 weeks,body weights of the magnetic group and the model group were lower than the control group (P ＜ 0.05).At the end of 9 weeks,performance of the magnetic group as indicated by frequency of grid crossing,grooming time and suspending tail test were improved to a significantly greater extent than the other two groups (P ＜ 0.05).In addition,the urine content of cortisol in 24 hours in magnetic field and model groups was higher than the control group at the end of 5 weeks,and the serum level of cortisol in the magnetic field group were significantly higher than the model group at the end of 9 weeks (P ＜ 0.05).Conclusion The 400mT magnetic field can reduce the severity of behavior changes of rats with CUMS-induced depression,which might be attributable to its influence on the cortisol levels in blood and urine.

To evaluate the effect of Hexue mingmu tablets on traumatic hyphema caused by blunt ocular trauma.
●METHODS: Totally 150 patients of traumatic hyphema were divided into seven types by using ultrasound biomicroscopy combining with anterior segment abnormalities, each type was randomly classified as trial group and control group. The trial group was administered Hexue mingmu tablets, control group was treated by hemocoagulase.
●RESULTS: The absorbing time of trial group was shorter than that of the control group. And there was statistical significance between the two groups (P<0. 05).
● CONCLUSlON: Hexue mingmu tablets is an effective medicine to treat traumatic hyphema. Ultrasound biomicroscopy can be used as a routine examination method in traumatic hyphema.

Objective To learn the prevalence and trends of Brucella disease in Ningxia, in order to provide scientific basis for effective control of the disease. Methods Data of Brucella cases reported through city network from 2004 to 2009 in Yinchuan city, Shizuishan city, Wuzhong city, Guyuan city and Zhongwei city of Ningxia were reviewed and retrospectively analyzed. The data included demographic characteristics, treatment conditions and medical history so on related information. Analytical indicators include reported incidence;with patients' gender, age, regional distribution, urban and rural distribution;become chronic and associated factors;distribution of the cases reporting unit and so on. Results From 2004 to 2009, Ningxia had reported 349 cases of Brucellosis, no deaths, the annual incidence rates reported were 0.017/10 million, 0.543/10 million, 0.151/101 (295/54);The proportion of 34- to 40-year-old age group was higher than other age groups(27.5%, 96/349);Occupational distribution of patients was mainly farmers and herdsmen(70.2% ,245/349), in regional distribution of the patients, the highest percentage was Wuzhong city(61.9%,216/349), followed by Yinchuan city(22.9%,80/349);The proportion of patients in rural areas(97.4% ,340/349) was higher than urban(2.6% ,9/349);the proportion of patients converted to chronic was 11.2% (39/349). With age, the chance of patients converted to chronic was in a decreasing trend(odds ratio was 0.966);cases reported by Centre for Disease Control and Prevention accounted for 74.8%(261/349), by hospital accounted for 25.2%(88/349). Conclusions The reported incidence of Brucellosis in Ningxia is in a rapid upward trend year by year, the patients is mainly young men, the rate of converted to chronic is higher and the ability of hospital in founding and reporting of the cases is weaker.Comprehensive measures should be taken to increase funding, strengthen monitoring, and continuously improve the level of awareness and diagnosis of medical personnel for further strengthen the prevention and control of Brucellosis.

Objective To study the relationship between genetic polymorphisms of CYP2E1 and the susceptibility of the acute leukemia in Gansu population. Methods The C609T polymorphism of CYP2E1 gene was detected by polymerase chain reaction-ligase detection reaction (PCR-LDR) and 1∶1 matched casecontrol method in 100 healthy persons (control group) and 100 patients with acute leukemia (AL group).Results The C2 allele genotype and C1C2/C2C2 genotype of CYP2E1 gene occurred more frequently in AL group (13.5 % and 22 %, respectively) than those in control group (10.5 % and 19 %, respectively), however,both differences showed no statistical significant. Further stratified analysis, the C1C2/C2C2 genotype of CYP2E1 gene occurred more frequently in AML group (27%) than that in control group (19 %), but difference had no statistical significant, too. The occurrence frequency of the C2 allele genotype and C1C2/C2C2 genotype of CYP2E1 gene showed no significant difference in ALL group and control group (x2=0.446, P =0.504>0.05). Conclusion Genetic polymorphisms of CYP2E1 don't correlated to susceptibility of acute leukemia(AML and ALL) in Gansu population.

Spermiogenesis is a complex process of differentiation and morphologic alteration, in which sperm acrosome formation is an important stage. Acrosome is an essential component of the sperm head, which develops in four distinct phases: Golgi, cap, acro- somal, and maturation, each supported by precise and orderly regulation of various genes. The regulatory genes which act on Golgi ap- paratus include GOPC, Hrb, SPATA16, PICK1, and CK2α', those involved in the cap phase are Fads2, syntaxin 2, Kdm3a, and UBR7, and participating in acrosomal and maturation phases are KIFC1, Rnf19a, and DPY19L2. The abnormalities of these genes may affect male fertility by influencing the connection of the nuclear dense lamina and acroplaxome with the nuclear membrane and then the fusion and transportation of vesicles. This review focuses on the genes involved in different phases of acrosome formation.
Acrosome ; physiology ; Animals ; Golgi Apparatus ; Male ; Mice ; Sperm Head ; physiology ; Spermatids ; growth & development ; Spermatogenesis ; genetics ; Spermatozoa ; growth & development

Diabetic ulcer is recognized as a chronic nonhealing wound, often associated with bacterial infection and tissue necrosis, which seriously affect patients' health and quality of life. The traditional treatment methods exist some problems, such as bacterial resistance and secondary trauma, so it is urgent to find new methods to meet the requirements of diabetic ulcer treatment. In this study, we prepared a drug delivery system (DFO@CuS nanoparticles) based on hollow copper sulfide (CuS) nanoparticles loaded with deferoxamine (DFO), which realized the synergistic therapy of promoting angiogenesis and photothermal antibacterial. The morphological structure and particle size distribution of DFO@CuS nanoparticles were characterized by transmission electron microscopy and particle size analyzer, respectively. The antibacterial effect of DFO@CuS nanoparticles was evaluated by the plate coating method. The effects of DFO@CuS nanoparticles on the proliferation, migration, and tube formation of human umbilical vein endothelial cells (HUVECs) were evaluated by CCK-8 (cell counting kit-8) assay, cell scratch assay, and tube formation assay. The results showed that DFO@CuS nanoparticles were hollow and spherical in shape with an average particle size of (200.9 ± 8.6) nm. DFO@CuS nanoparticles could effectively inhibit the growth of methicillin-resistant Staphylococcus aureus (MRSA) and Pseudomonas aeruginosa (PA) under near-infrared (NIR) light irradiation. DFO@CuS nanoparticles showed negligible cytotoxicity and effective acceleration of cell migration and tube formation in a certain concentration range. In conclusion, the prepared DFO@CuS nanoparticles exhibit good photothermal antibacterial properties and pro-angiogenic effects, providing a basis for their application in the treatment of diabetic ulcer.

OBJECTIVETo explore the influence of the DNA repair gene ERCC2 single nucleotide polymorphisms (SNPs) rs13181, rs1618536, and rs1799793 on male idiopathic infertility in Ningxia, China.

METHODSUsing MassArray, we conducted a case-control study and genotyped three ERCC2 SNPs rs13181, rs1618536, and rs1799793 for 351 males (aged 31.0 +/- 4.2 years) with idiopathic infertility and another 327 normal fertile men (aged 33.0 +/- 5.9 years) as controls.

RESULTSThe ERCC2 AnyG-anyA-anyA genotypes were significantly associated with an increased risk of idiopathic infertility (OR 0.414, 95% CI 0.176 - 0.970), while the three single ERCC2 SNPs rs13181, rs1618536, and rs1799793 showed no significant differences between the cases and controls (P > 0.05).

CONCLUSIONThe ERCC2 SNPs rs13181, rs1618536, and rs1799793 play a role of interaction in male idiopathic infertility in Ningxia, contributing to the risk of the disease.

Adult ; Case-Control Studies ; China ; DNA Repair ; Genotype ; Humans ; Infertility, Male ; genetics ; Male ; Polymorphism, Single Nucleotide ; Xeroderma Pigmentosum Group D Protein ; genetics

OBJECTIVETo study the diagnosis and treatment of gastrointestinal injury caused by magnetic foreign body ingestions in children.

METHODSA literature search was performed to identify all the studies related to gastrointestinal tract injury caused by ingesting magnetic foreign body using databases including Google, Medline, ISI Web of Knowledge, Ovid, Wanfang data, VIP, CNKI, degree dissertation, meeting abstracts, and request for document delivery. Language was limited to English, Chinese, Japanese, and Korean. Parameters studies were age at diagnosis, gender, country, regional distribution, number of magnetic foreign bodies, source of magnetic foreign bodies, clinical features, diagnosis, and method for foreign body removal.

RESULTSA total of 98 cases of magnet ingestion were identified from 17 countries and regions. There were 94 patients under the age of 18, with most children younger than 5 years old(62.2%,61/98). The age at peak incidence was 3 years old (16.3%, 16/98). Magnetic foreign bodies ingested included toys(74.5%), medical apparatus(8.2%), accessories(4.1%), and others(6.2%). The number of bodies ranged from 2 to 100. Eleven (11.2%) patients were complicated with allotriophagia or autism. Delay diagnosis and treatment existed in all the patients to varying extents, of whom one died from severe infection. Exploratory laparotomy showed a wide range of bowel damage from the esophagus to the colon, including perforation and intestinal fistula. Intestinal damage was the most common injury (51.0%), followed by intestine-colon fistula (15.3%). All the patients required bowel resection with anastomosis or fistula repair except for 2 children who were managed by endoscopic removal of the foreign bodies.

CONCLUSIONIngesting more than one magnet will lead to severe gastrointestinal injury. Early diagnosis and surgical intervention are important. More precautious measures should be taken for children aged younger than 5 years old.

Adolescent ; Child ; Child, Preschool ; Foreign Bodies ; Gastrointestinal Tract ; injuries ; Humans ; Magnetics

OBJECTIVETo investigate the effects of long-term high-protein, low-carbohydrate diet on body weight and the expression of gastrointestinal hormones in diet-induced obesity rats.

METHODSTwenty-four diet-induced obesity rat models were established by feeding fat-enriched diet, then were randomly divided into two groups by stratified sampling method by weight: the high-protein diet group (HP, 36.7% of energy from protein), and the normal chow group (NC, 22.4% of energy from protein), 12 rats in each group. The total calorie intake of each rat per day was similar and was maintained for 24 weeks, then body weight, visceral fat mass, fasting plasma ghrelin and glucagon-like peptide-1 (GLP-1) were determined, as well as protein expression of ghrelin in stomach, GLP-1 in ileum were detected by immunohistochemistry.

RESULTSAfter 24 weeks, body weight of HP, NC groups were (490.92 ± 39.47) g and (545.55 ± 31.08) g, respectively (t = -3.664, P < 0.01); visceral fat mass were (22.42 ± 7.04) g and (32.33 ± 9.27) g, respectively (t = -2.503, P < 0.05); plasma ghrelin level were (2.36 ± 0.82) and (1.95 ± 0.64) ng/ml, respectively (t = 1.337, P > 0.05), and plasma ghrelin level was negatively correlated to body weight (r = -0.370, t = -1.899, P < 0.05), visceral fat mass (r = -0.454, t = -2.52, P < 0.01); plasma GLP-1 concentration were (0.52 ± 0.13) and (0.71 ± 0.19) ng/ml, respectively(t = -2.758, P < 0.05); ghrelin protein expression in stomach were 25 473 ± 8701 and 10 526 ± 6194, respectively (t = 2.501, P < 0.05); GLP-1 protein expression in ileum were 27 431 ± 5813 and 36 601 ± 5083, respectively (t = -1.833, P = 0.081).

CONCLUSIONLong-term isocaloric high-protein, low-carbohydrate diet can reduce body weight and visceral fat, increase the expression of ghrelin, and decline GLP-1 expression in diet-induced obesity rats.

Animals ; Body Weight ; Diet, Carbohydrate-Restricted ; Dietary Proteins ; administration & dosage ; Gastrointestinal Hormones ; metabolism ; Ghrelin ; blood ; metabolism ; Glucagon-Like Peptide 1 ; metabolism ; Intra-Abdominal Fat ; metabolism ; Male ; Obesity ; metabolism ; Rats ; Rats, Wistar