AlM: To describe the expression of hypoxia-inducible factor-1α ( HlF-1α) and erythropoietin ( EPO ) in rats' corneal and evaluate its potential effect on corneal neovascularization ( CNV) growth.
METHODS:The young SD rats (3mo) was chosen and randomly divided into 2 groups, which were experimental group and normal control group. CNV model was established by alkali burn, and the length and area of CNV was observed everyday after operation by slit lamp. After that, the expression of HlF-1α and EPO was measured by SABC and RT-PCR methods at 1, 3, 5, 7, and 14d after alkali burn. The data was analyzed by SPSS 20. 0.
RESULTS:The area of CNV was increasing at 1, 3, 5, 7, and 14d after alkali burn, and the peak point appear at 7d. The growth speed was decreased after 14d. SABC method told us that no HlF-1αand very tiny amount EPO was detected at normal rats' corneal. The expression of the two factors increased at 1d after alkali burn in corneal epithelium and endoderm. The results of RT - PCR showed that a few amounts of HlF-1α and EPO mRNA were detected at normal group. The expression of the two factors was increased at 3d after alkali burn, and the peak value was found at 7d, however, it was decreased at 14d. Statistical difference was found at different time (P<0. 05).
CONCLUSlON: HlF- 1α and EPO is closely related to CNV.

Magnetic resonance imaging ( MRI ) findings were studied in 19 patients with non-dementia Parkinson′s disease ( PD) Hoehn-Yahr Stage 1 and 1.5 and 38 healthy subjects.The width and area of pars compacta of substantia nigra ( SNc) , substantia nigra ( SN) and midbrain were measured.The width and area ratios of SNc to SN were calculated.Compared with controls, the widths of right SNc was narrower, bilateral ratios of SNc to SN width were decreased in PD group.As to the area of substantia nigra, there was no significant difference between PD and controls.The width of left SN and the ratio of right SNc to SN width was negatively correlation with age of patients.The ratio of left SNc to SN width, the area of bilateral SNc and left SN, as well as the ratio of right SNc to SN area had negative correlation with the disease duration;however, there was no correlation with gender, Hoehn-Yahr Stage, the Unified Parkinson disease rating scale score, mini mental state scale, education years, levodopa equivalent daily dose, Hamilton Depression Scale or Hamilton Anxiety Scale in PD group.The results indicate that there are bilateral structural changes of SN in unilateral PD patients, which may be more significant with increasing disease duration.The measurement of SNc width and SN area can be used as an objective indicator for diagnosis and disease progression monitoring of PD.

Aged ; Humans ; Laryngectomy ; instrumentation ; Larynx, Artificial ; Male ; Middle Aged

Objective To explore and study the effect of bundles on prevention and treatment of oral mucositis caused by chemoradiotherapy for patients with nasopharyngeal carcinoma. Methods A total of 40 patients who met the inclusion criteria from June 2014 to December 2014 were selected as the control group, who adopted routine nursing measures, 40 patients who met the inclusion criteria from January 2015 to June 2015 were assigned to the observation group. Bundles on prevention and treatment of oral mucositis caused by chemoradiotherapy for patients with nasopharyngeal carcinoma were edited using a series of evidence-based approach, and it was used to manage the patients of observation group. Results While doing 21, 28, 33 friction of radiotherapy, the oral mucositis level of 0 degree, Ⅰ degree,Ⅱ degree,Ⅲ degree and Ⅳ degree of the observation group were 8, 25, 7, 0, 0 cases;3, 11, 24, 2, 0 cases;0, 19, 13, 6, 2 cases respectively, which were lower than the control group whose degrees were 0, 31, 6, 3, 0 cases;0, 18, 11, 10, 1 cases;0, 9, 17, 9, 5 cases. The difference between the two groups was statistically significant (Z=-4.440,-3.441,-2.232, all P < 0.05 or 0.01). While doing 21, 28, 33 friction of adiotherapy, the throat pain level of 0 degree, Ⅰ degree,Ⅱ degree,Ⅲ degree of observation group were 4, 31, 5, 0; 2, 22, 14, 2; 0, 26, 12, 2 cases respectively, which were lower than the control group whose degrees were 1, 22, 16, 1 cases; 0, 10, 23, 7 cases; 0, 10, 17, 13 cases. The difference between the two groups was statistically significant (Z=-3.137,-3.326,-3.518, all P<0.01). While doing 28, 33 friction of radiotherapy, the Self Rating Anxiety Scale of the observation group scored 56.76 ± 3.19, 58.72 ± 5.41, which were lower than 60.58 ± 2.46, 63.42 ± 4.97 in the control group. The difference between the two groups was statistically significant (t=11.746, 10.561, all P <0.01). While doing 33 friction of radiotherapy, the self rating anxiety scale of the observation group was 60.56 ± 3.73, which was lower than 63.43 ± 4.77 in the control group. The difference between the two groups was statistically significant (t=-4.983, P<0.01). The following entries:swallow, sensation, eating in public, dry mouth, sticky saliva, feel sick of the quality of life questionnaire of the observation group were higher than the control group while doing 33 friction of radiotherapy. All the differences were statistically significant (t=-3.873-5.130, P<0.05 or 0.01). Conclusions The bundles could effectively prevent and treat oral mucositis caused by chemoradiotherapy for patients with nasopharyngeal carcinoma. It could release the throat pain, anxiety and depression of the patients, as well as improve the quality of life to some extent.

Objective To find out the situation of household consumption of iodized salt in Hebei province so as to provide scientific basis for prevention and control of iodine deficiency disorders(IDD). Methods According to the "national iodine deficiency disorders surveillance program (Trial)", the county (city, district) was taken as a unit, township (town) and administrative villages were selected in accordance with the principle of systematic sampling, then households were chosen by random sampling to collect their edible salt in Hebei province from 2007 to 2009. Salt iodine content was detected by direct titration method. Results A total of 48 675, 48 448 and 48 756 salt samples were collected from 2007 to 2009, respectively. The consumption rate of qualified iodized salt from 2007 to 2009 was 91.16%, 91.96% and 96.17%, respectively. There were 24.6%(41/167)and 18.0%(30/167)counties with consumption rate of qualified iodized salt under 90% in 2007 and 2008, respectively. The percentage of counties with consumption rate of qualified iodized salt above 90% was 100.0%(167/167) in 2009. In general there was a significant differences in frequency distribution of consumption rates of qualified iodized salt among the three years(H = 10.778, P ＜ 0.01 ), and the difference was found significant between 2007 and 2009 as well as between 2008 and 2009(all P ＜ 0.05), but was not significant between 2007 and 2008(P ＞ 0.05). Conclusions The consumption rate of qualified iodized salt at household level increases annually from 2007 to 2009. By 2009,the consumption rate of qualified iodized salt in each county is more than 90%, which has reached the national standard stipulated in "the evaluation programs for fulfilling the goal of eliminating IDD at county level".

Objective To investigate the feasibility and primary therapeutic effect of inverted Y-shaped self-expandable metal stent for complex airway stenosis.Methods On the standpoint of the peculiar anatomic structure and the pathological changes of complex airway stenosis,we designed the inverted Y-shaped self- expandable metal stent.Under the fluoroscopic guidance,7 stents were implanted in 7 cases of airway complex stenosis.Results The inverted Y-shaped self-expandable metal stents were placed seccussfully,with instantaneous relief of dyspnea and improvement of living quality.Conclusion The placement of inverted Y- shaped self-expandable metal stent is feasible and safe for treating airway complex stenosis.(J Intervent Radiol, 2007,16:92-94)

Objective To investigate the geographical distribution of excessive iodine in drinking water and to demarc aI|e the excessive iodine regions in Hebei Province.Methods In 173 counties of Hebei Province, town was surveyed as an elementary unit.Five villages were sampled according to the direction of east,west, south,north,center in every town.If the water sources were more than 5 in a village,water was sampled according to the direction ofeast,west, south,north, center, respectively;If the water sources were less than 5 in a village, all were sampled:If the village used water of cental supply,only one sample wag collected.Arsenic-cerium catalysis was used to determine the iodine concentration of drinking water.Results Two thousands and forty-nine towns were investigated and 19 352 water samples were determined in Hebei Province.One hundred and seventy- two towns were confirmed to be excessive iodine areas,where the range of water iodine Wag 0.1～2840.4μg/L The water 8amDle with 18 358 had a water iodine median less than 150.0μg/L The areas with water iodine median less than 150.0μg/L,in between 150.0μg/L and less than 300.0μg/L,and equal to or more than 300.0 μg/L accounted for 94.86%,2.92%and 2.22%,respectively.There were 110 towns with water iodine median being between 150.0μg/L and iess than 300.0 μg/L and 62 towns with water iodine median equal to or more than 300 gμ/L.Exeessive iodine towns distributed in 33 counties of 6 cities involving 5 854 960 residents in'Hebei Provmce. MOBt of the water sources with excessive iodine Cangzhou were deep wells and there was a positive correlation between we depth and water iodine concentration (r=0.430,P<0.01), while they were shallow wells in Handan, Xingtai.Hengshui,and no correlation was found between well depth and water iodine concentration(r=-0.060,-0.119.-0.121,P>0.05).Conclusions Six cities have excessive iodine water resotlrees in Hebei Province, mostly in Handan.xingtai,Hengshui and Cangzhou Cities,which all are low-lying land.The water with excessive iodine is hypogene,and the towns with excessive iodine water distributein patchy or spot pattern.

OBJECTIVETo observe the effect of acupuncture on photoreceptor cell apoptosis in rats with retinitis pigmentosa induced by N-methyl-N-nitrosourea (MNU).

METHODSFifty-day-old female SD rats were established into model of retinitis pigmentosa by once intraperitoneal injection of 50 mg/kg MNU, and randomly grouped to the acupuncture group and the model group for observing the cell apoptosis in rats and compared with that in normal rats at the corresponding time points.

RESULTSAcupuncture showed no effect on cell apoptosis at its peak of occurring, apoptotic phenomena still could be seen on days 5 and 7, but it was significantly less in the acupuncture group than in the model group (P < 0.01). Moreover, acupuncture showed a restraining effect on the up-regulation of caspase-3 activity.

CONCLUSIONAcupuncture can restrain the MNU induced apoptosis of photoreceptor cells, the effect is correlated, to a certain degree, with the status of the apoptosis occurrence.

Acupuncture Therapy ; Animals ; Apoptosis ; physiology ; Caspase 3 ; metabolism ; Female ; Methylnitrosourea ; Photoreceptor Cells ; pathology ; Random Allocation ; Rats ; Rats, Sprague-Dawley ; Retinitis Pigmentosa ; chemically induced ; therapy

BACKGROUNDPreeclampsia is one of hypertensive disorders in pregnancy. It is associated with abnormal lipid metabolism, including fatty acid oxidation metabolism. Long chain 3-hydroxyacyl-CoA dehydrogenase (LCHAD) plays an indispensable role in the oxidation of fatty acids. It has been reported that nitric oxide (NO) is one of the regulatory factors of the fatty acid oxidation pathway. The aim of this research was to investigate whether the nitric oxide synthase (NOS) inhibitor L-NAME may cause down-regulation of LCHAD in the pathogenesis of preeclampsia.

METHODSPregnant wild-type (WT) mice were treated with L-NAME or normal saline (NS) during gestation days 7 - 18 (early group), days 11 - 18 (mid group) and days 16 - 18 (late group), and apoE-/- mice served as a control. Systolic blood pressure (SBP), urine protein, feto-placental outcome, plasma lipid levels and NO concentrations were measured, and the expression of mRNA and protein for LCHAD in placental tissue were determined by real-time polymerase chain reaction (RT-PCR) and Western blotting, respectively.

RESULTSIn WT and apoE-/- mice, SBP and urinary protein increased following L-NAME injection. Fetal and placental weights and NO concentrations were reduced and total cholesterol, triglycerides and free fatty acid levels were increased in early and mid L-NAME groups in WT and apoE-/- mice, compared with the NS group. There was no significant difference between the late L-NAME group and NS group. RT-PCR and Western blotting analysis showed that the mRNA and protein levels of LCHAD expression were significantly down-regulated in the early and mid L-NAME groups but not in the late L-NAME group in the WT and apoE-/- mice compared with the corresponding NS groups.

CONCLUSIONSInhibition of NO in early and mid gestation in mice may cause hyperlipidemia and suppression of fatty acid oxidation, whereas preeclampsia-like conditions in late gestation may be a maternal vascular response to inhibition of NO.

Animals ; Disease Models, Animal ; Enzyme Inhibitors ; pharmacology ; Fatty Acids ; metabolism ; Female ; Mice ; NG-Nitroarginine Methyl Ester ; pharmacology ; Nitric Oxide Synthase ; antagonists & inhibitors ; Oxidation-Reduction ; Pre-Eclampsia ; chemically induced ; etiology ; Pregnancy

BACKGROUNDEarly and late-onset preeclampsia is thought to be different disease entities. This study aimed to determine the effects of early-onset preeclampsia-like symptoms on feto-placental outcomes and the adverse impacts of various factors on placental and fetal growth and development at different gestational stages in a mouse model.

METHODSPregnant C57BL/6J mice were divided into control and preeclampsia (PE) groups, and injected subcutaneously with the nitric oxide synthase inhibitor L-arginine methyl ester (L-NAME) 50 mgxkg(-1)d(-1). The PE group was divided into early-, mid- and late-PE groups with L-NAME injections starting on days 7, 11 and 16 of pregnancy, respectively. Corresponding control groups were injected with saline at the same time points. Blood pressure was measured until days 14 and 18, when the fetuses and placentas were removed under anesthesia. Blood pressure, urinary protein, and fetal and placental conditions were analyzed.

RESULTSBlood pressure and urinary protein increased following L-NAME injection. The fetal survival rate and fetal weight were reduced and the fetal absorption rate was increased in the early-PE group on days 14 and 18 of pregnancy, compared with the control group. There were no significant differences in these parameters between the late-PE group and the respective control group. Placental weights in the early- and mid-PE groups were significantly reduced at days 14 and 18 of pregnancy compared with the control groups, but there was no significant difference in placental weight between the late-PE group and the respective control group. Morphologic examination of placentas from the early- and mid-PE groups showed varying degrees of fibrinoid necrosis and villous interstitial edema, but no significant pathologic changes were found in the placentas from the late-PE or control groups.

CONCLUSIONPreeclampsia-like symptoms occurring during the early stage of pregnancy are more likely to affect placental and fetal development, whereas late onset preeclampsia-like symptoms have a direct impact on the mothers.

Animals ; Blood Pressure ; Disease Models, Animal ; Female ; Fetal Development ; Fetal Resorption ; etiology ; Fetal Weight ; Mice ; Mice, Inbred C57BL ; Organ Size ; Placenta ; pathology ; Pre-Eclampsia ; pathology ; physiopathology ; Pregnancy