Objective To study the effects of environmental noise on the health of frontage uptown residents in Fuzhou city. Methods The AWA6218B sound-level meter was used to determine the sound intensity in five frontage uptowns, the testing time was at noon and in the evening, 213 inhabitants were selected to investigated the health effects by the questionnaire. Results The five tested frontage uptowns' Leq were 57.4-67.7 dB(A), which was in the extent of loudness. Some residents considered the noise as the main pollution which impacted their living quality. The noise had the adverse effect on sleeping, emotion, audition, working and study. Conclusion Environmental noise has serious adverse effects on the health of the frontage uptown inhabitants.

Objective To explore endoscopic diagnosis,treatment,pathological features and prognosis of gastrointestinal carcinoid tumors.Methods Retrospective analysis of 72 cases of gastrointestinal carcinoid tumors which were endoscopically diagnosed,treated,pathologically confirmed and followed up from July 2004 to July 2010 in Shanxi Provincial People' s Hospital.Common endoscopic diagnosis,endoscopic ultrasound(EUS)diagnosis,pathological features,treatment and prognosis were summarized.Results Twenty six cases of upper gastrointestinal carcinoid tumors and 46 cases of lower gastrointestinal carcinoid tumors were diagnosed and followed up.A total of 65 cases were single carcinoid and 7 were multiple carciniods.Tumors were mostly yellowish hard nodules with limited range of movement.EUS showed uneven hypoechoic nodules in the submucosal layer.Fifty-one cases of single carcinoid tumor were successfully treated with endoscopic mucosal resection(EMR)or endoscopic submucosal dissection(ESD)and the cure rate was 96.2％(51/53).Three cases of multiple carciniods were cured with EMR and the cure rate was 3/7.There was no tumor recurrence after treatment during follow-up.Conclusions Endoscopy examination is an important way to detect early carcinoid tumors.Endoscopic ultrasound probe can further clarify source and level of the lesion,and provide the basis for the endoscopic therapy.EMR and ESD are the preferred radical treatment for early carcinoid tumors.

Objective To investigate airway inflammation,number of eosinophils in blood and BALF,the expression of inhibitor protein ?(I ?B ?) and nuclear factor-?B(NF-?B) activity in lung of rat with spleen deficiency asthma,and the effect of herbs of reinforcing spleen to replenishing Qi.Method Thirty rats were randomly divided into three groups:control group(group A),spleen deficiency asthma group(group B),decoction group(group C).The pathological changes of lung was detected by HE staining,and the expression of I ?B ? and activity of nuclear factor ?B p65(NF-?B p65) was assessed in lung by immunohistochemistry.Results Compared with group A,the expression of I ?B ? significantly reduced(P

Based on untermolecular splut G-quardruplex-hemun DNAzymes, a buosensor for detectuon of sulver uons and cysteune was developed wuth magnetuc nanopartucles ( MNPs ) as carruer to ummobuluze the DNA probes. Sunce Ag+ chelates guanune bases at the bundung sutes whuch are unvolved un G-quadruplex formatuon, the presence of Ag+ may unhubut G-quartets connected by Hoogsteen-type base paurung and dusrupt G-quadruplexes structures, whuch decreases the peroxudase actuvuty of G-quadruplex-hemun DNAzymes that effucuently catalyze H2 O2-meduated reactuons, such as the oxudatuon of ABTS ( 2, 2'-azunobus ( 3-ethylbenzothuozolune)-6-sulfonuc acud) by H2 O2 . Moreover, un the presence of L-cysteune, ut was used as a competutor by the strongly Ag-S to release Ag+ from G-ruch olugonucleotudes, promotung the reformatuon of G-quadruplexes and uncreasung the peroxudase actuvuty, whuch catalyzes the ABTS-H2 O2 reactuon system. In thus experument, the effucuent separatuon from real sample was achueved usung magnetuc nanopartucles as a solud phase carruer to effectuvely uncrease the detectuon sensutuvuty and decrease the background sugnal. Under the optumum condutuons, a hugh lunear relatuonshup between the UV absorbance and the Ag+ concentratuon was establushed un the range of 0. 5-100 nmol/L wuth a detectuon lumut of 0. 2 nmol/L. The calubratuon curve of cysteune was udentufued un the range from 0. 1 to 80 nmol/L and the detectuon lumut was as low as 0. 04 nmol/L.

Objective To investigate the effect of the eye-acupuncture therapy on serum TNF-α levels in rats with cerebral ischemia-reperfusion injury and the related mechanism. Methods Healthy SD rats were randomly divided into four groups: normal group, sham-operated control group, ischemia-reperfusion model group and eye-acupuncture group according to body weight. Sham-operated control group, ischemia-reperfusion model group and eye-acupuncture group were divided into the 3h group, the 24h group and the 72h group, a total of 10 groups (n=8). To establish the rat model of cerebral ischemia-reperfusion by suture method in ischemia-reperfusion model group and eye-acupuncture group. Eye-acupuncture was separately started immediately after reperfusion and at 30 min before sampling in the 3h eye-acupuncture group, besides, eye-acupuncture was separately taken every 12h in the 24h eye-acupuncture group and in the 72h eye-acupuncture group. The rats in normal group were not treated, those in sham-operated control group were inserted the fishing thread 1cm, and the others were identical with those in ischemia-reperfusion model group. At 3h, 24h, 72h after reperfusion, the neurophysical behaviours were accessed by ZeaLonga neurophysical impairment marks in ischemia-reperfusion model group and eye-acupuncture group. The method of ELISA was taken to detect the change of serum TNF-α levels in rats after the eye-acupuncture therapy. Results Compared with the ischemia-reperfusion model group, the neurologic impairment score of the eye-acupuncture group decreased obviously; The levels of serum TNF-αin ischemia-reperfusion model group at 3 h, 24 h, 72 h respectively were(76.803±18.325)pg/ml、(85.511±13.334)pg/ml、(86.831±9.232)pg/ml. The level of serum TNF-α in normal group was(24.304±6.511)pg/ml. The level of serum TNF-α in Sham-operated control group at 3 h, 24 h, 72 h respectively were(24.928±3.792)pg/ml,(27.533±5.362)pg/ml,(29.366±5.874)pg/ml. Ischemia-reperfusion model group compare with normal group and sham-operated control group, the difference were significant(P＜0.01). The levels of serum TNF-α in rats after the eye-acupuncture therapy at 3 h, 24 h, 72 h respectively were(40.185±3.335)pg/ml, (48.523±7.687)pg/ml, (51.611± 6.403)pg/ml. Compared with ischemia-reperfusion model group, the levels of serum TNF-α were strongly reduced(P＜0.01). Conclusion The eye-acupuncture therapy could play a role in improving cerebral ischemia-reperfusion injury evidently and the mechanism was related to its reducing serum TNF-α levels.

Objective To investigate the protective effect of crocin on oxidative stress cell model of PC 12 cell and the effect of crocin on PI3K/Akt signal pathway,as well as further explore the mechanism of protective effect on model cells.Methods Cells were divided into control group,model group,crocin group and VE group.The cell survival rate was detected by MTT method,and the expression of mRNA and protein of PI3K/Akt were detected by RT-PCR and Western blot.Results With the crocin concentration in 0.625 μM and 5 μM,the cell survival rate increased in a dose-dependent manner.The average optical density rate of PI3K and Akt mRNA were 0.435±0.044 and 0.375 ± 0.034,and the PI3K and Akt protein were 0.378± 0.038 and 0.386± 0.043 of crocin group.Compared with the model group,the expression levels of PI3K/Akt increased in crocin group (P＜0.05).Conclusion These results indicate that the antioxidant and antiapoptosis effects of crocin are induced via increasing expression of PI3K and pAkt.

Pulmonary mucinous adenocarcinoma is a subtype of lung adenocarcinoma, among which invasive mucinous adenocarcinoma (IMA) is the most common subtype and is easily misdiagnosed as pneumonia. Its etiology and pathogenesis are unclear and may be related to gene mutations and other factors. Due to its relative rarity and few related studies, guidelines do not provide advices on its treatment. KRAS mutations are common in IMA patients, and Sotorasib may be effective against KRAS G12C mutated IMA. NRG1 fusion is considered to be an important driver of IMA, and afatinib may be effective in treating IMA with NRG1 fusion/rearrangement. PD-L1 expression is very low in IMA patients, while B7-H3 expression is high, so B7-H3 may be a potential immunotherapeutic target.

Objective:To explore the effects of Liuwei Dihuang Wan on the behaviors and Toll-like receptor 4/nuclear factor kappa-B(TLR4/NF-κB) signal transduction pathway of amyloid β-precursor protein/presenilin-1(APP/PS1) double transgenic mice.Methods:Forty 3-month-old female APP/PS1 mice were randomly divided into model group, low-dose group(0.59 g/kg), medium-dose group(1.18 g/kg), high-dose group(2.36 g/kg)of Liuwei Dihuang Wan(gavaged according to grouped doses), and ibuprofen group(0.04 g/kg, gavage) using a random number table method, with 8 mice in each group.Eight 3-month-old wild-type female C57BL/6 mice with matched body weight were used as the control group.The mice in control group and model group were given an equal volume of 0.9% sodium chloride solution by gavage.The gavage administration was twice a day for a continuous period of 3 months.Morris water maze test was used to detect the learning and memory abilities of mice. ELISA was used to detect the serum levels of tumor necrosis factor-α (TNF-α), interleukin-1β(IL-1β) and immunohistochemistry was used to detect the levels of amyloid β-protein (Aβ), glial fibrillary acidic protein(GFAP) and NF-κB in hippocampal tissue.Western blot was used to detect the expression levels of TLR4, myeloid differentiation primary response gene 88(MyD88), and phosphorylated NF-κB(p-NF-κB) proteins in hippocampal tissue.The SPSS 20.0 software was used for data analysis. Multiple group comparisons were conducted by repeated measure ANOVA or one-way ANOVA.Results:The results of repeated measure ANOVA showed that as for the escape latency of the 6 groups of mice, the interaction effect between time and group was significant ( Finteraction=117.219, P<0.001). The escape latencies of mice in the 6 groups on the 5th day were all lower than those on the 1st day (all P<0.05). The escape latencies of mice in the ibuprofen group and the medium-dose and high-dose groups of Liuwei Dihuang Wan were lower than that in the model group from 1st day to 5th day(all P<0.05). On the 3rd to 5th day, the escape latencies of mice in the medium-dose and high-dose groups of Liuwei Dihuang Wan were lower than those in the low-dose group of Liuwei Dihuang Wan (all P<0.05). There were statistically significant differences in the percentage of residence time in the platform quadrant and the numbers of crossing platform among the 6 groups of mice ( F=5.451, 4.824, both P<0.05). The percentage of residence time in the platform quadrant (50.77±5.49)%, (54.39±5.71)%, (51.98±6.12)%), and the numbers of crossing platform((5.9±1.1) times, (6.0±1.3) times, (5.1±0.8) times) in the high-dose and medium-dose groups of Liuwei Dihuang Wan and the ibuprofen group were all higher than those in the model group ((27.32±3.22)%, (2.2±1.0) times )(all P<0.05). The immunohistochemical results showed that there were statistically significant differences in the integrated optical density values of Aβ, GFAP and NF-κB in the hippocampal tissues of 6 groups of mice ( F=57.52, 45.37, 79.10, all P<0.05). The integrated optical density values of Aβ, GFAP and NF-κB in the high-dose and medium-dose groups of Liuwei Dihuang Wan and the ibuprofen group were all lower than those in the model group (all P<0.05). And the integrated optical density values of Aβ, GFAP, and NF-κB in the high-dose and medium-dose groups of Liuwei Dihuang Wan were all lower than those in the low-dose group of Liuwei Dihuang Wan (all P<0.05). There were statistically significant differences in the levels of serum TNF-α and IL-1β detected by ELISA ( F=3.996, 6.395, both P<0.05) and the proteins levels of TLR4, MyD88, and p-NF-κB in hippocampal tissue detected by Western blot among the 6 groups( F=15.710, 3.522, 4.119, all P<0.05). The serum TNF-α and IL-1β levels in the high-dose and medium-dose groups of Liuwei Dihuang Wan and ibuprofen group were all lower than those in the model group (all P<0.05). The serum TNF-α ((18.90±2.33) ng/L, (21.56±2.49) ng/L) and IL-1β ((5.88±0.80) ng/L, (6.75±0.83) ng/L) levels in the high-dose and medium-dose groups of Liuwei Dihuang Wan were lower than those in the low-dose group ((30.77±2.89) ng/L, (9.11±1.27) ng/L) (all P<0.05). The protein expression levels of TLR4, MyD88, and p-NF-κB in the hippocampus of the high-dose and medium-dose groups of Liuwei Dihuang Wan and ibuprofen group were lower than those of the model group (all P<0.05). The protein expression levels of TLR4 ((0.254±0.091), (0.318±0.122)), MyD88 ((0.229±0.077), (0.386±0.119)), and p-NF-κB ((0.412±0.188), (0.358±0.119)) in the hippocampus of the high-dose and medium-dose groups of Liuwei Dihuang Wan were lower than those of the low-dose group ((0.617±0.172), (0.672±0.166), (0.799±0.227)) (all P<0.05). Conclusion:Liuwei Dihuang Wan can significantly alleviate learning and memory impairment in Alzheimer's disease model mice, possibly by inhibiting TLR4/NF-κB signal pathway, reducing TNF-α and IL-1β expression, thereby alleviate central immune inflammatory response and exert anti Alzheimer's disease effects.

Objective:To investigate the arsenic metabolism pattern and possible influencing factors in the population in drinking-water-borne endemic arsenic poisoning (drinking-water-borne arsenic poisoning for short) areas.Methods:In December 2004, a cluster sampling method was used to select arsenic poisoning population (arsenic poisoning group) and healthy population (control group) in drinking-water-borne arsenic poisoning area of Bayannur City, Inner Mongolia Autonomous Region as the survey subjects. A questionnaire survey was conducted. Arsenic content in drinking water at home of survey subjects, the levels of urinary arsenic and its metabolites, including [trivalent arsenic (As Ⅲ), inorganic arsenic (iAs), monomethylarsenic acid (pentavalent, MMA V), dimethylarsenic acid (pentavalent, DMA V), total arsenic (tAs), percentage of inorganic arsenic (iAs%), percentage of monomethylarsenic acid (MMA%), percentage of dimethylarsenic acid (DMA%), primary methylation index (PMI), secondary methylation index (SMI)] were tested using high performance liquid chromatography-inductively coupled plasma mass spectrometry; nail arsenic and nail selenium levels were tested using atomic fluorescence spectrometer. The influencing factors of arsenic metabolism pattern were analyzed by multiple linear regression. Results:A total of 536 survey subjects were included, including 155 individuals in the arsenic poisoning group and 381 in the control group. The water arsenic level ranged from 0.0 to 825.7 μg/L. Compared with the control group, there was no significant difference in the distribution of gender, education level and dental fluorosis in the arsenic poisoning group ( P > 0.05), but there were significant differences in the distribution of age, marital status, smoking, drinking and water arsenic ( P < 0.05). Compared with the control group, the levels of urinary As Ⅲ, iAs, MMA V, DMA V, tAs, MMA%, MMA/DMA and nail arsenic in the arsenic poisoning group were higher ( P < 0.05), while the levels of urinary DMA%, SMI and nail selenium were lower ( P < 0.05); but there was no statistically significant difference in the levels of urinary iAs% and PMI ( P > 0.05). Gender, education level, depth of wells, water arsenic, total number of wells and nail arsenic were the influencing factors of urinary As Ⅲ (β = - 19.82, - 23.83, 0.61, 0.21, 7.26, 2.98, P < 0.05). Age, depth of wells, water arsenic and nail arsenic were the influencing factors of urinary tAs (β = 3.18, 3.25, 1.31, 15.59, P < 0.05). Gender, education level, depth of wells, water arsenic, total number of wells and nail arsenic were the influencing factors of urinary iAs (β = - 20.47, - 25.90, 0.64, 0.25, 7.87, 3.11, P < 0.05). Age, gender, education level, water arsenic and nail arsenic were the influencing factors of urinary MMA V (β = 0.52, - 17.07, - 21.84, 0.22, 2.77, P < 0.05). Age, depth of wells, water arsenic and nail arsenic were the influencing factors of urinary DMA V (β = 2.35, 2.47, 0.85, 9.22, P < 0.05). Conclusions:Compared with healthy individuals, there are differences in arsenic metabolism pattern among individuals with drinking-water-borne arsenic poisoning. Age, gender, education level, depth of wells, water arsenic, total number of wells and nail arsenic may be influencing factors of different arsenic metabolism patterns.

ObjectiveTo study the expression changes of Lon protein and mitochondrial dynamics-related protein in the hippocampus of SAMP8 mice and provide a theoretical basis for the treatment of Alzheimer's disease by invigorating the spleen and supplementing Qi. MethodEight 3-month-old SAMR1 mice were used as the normal group， and 32 3-month-old SAPM8 mice were divided into model group， western medicine group （0.013 g·kg^-1）， low-dose Si Junziwan group （3.24 g·kg^-1）， and high-dose Si Junziwan group （12.56 g·kg^-1）， with 8 mice in each group. The western medicine group was gavaged with donepezil， and the Si Junziwan low- and high-dose groups were gavaged with Si Junziwan for 30 days. The positioning navigation experiment of the water maze was started on the 25^th day， and the space exploration experiment of the water maze was started on the 30^th day. On the 30^th day， the protein expression of mitofusin 2 （MFN2） was detected by immunohistochemistry， the expression of adenosine 5'-monophosphate （AMP）-activated protein kinase （AMPK） was detected by enzyme-linked immunosorbent assay （ELISA）， the content of ATP was detected by colorimetry， the microstructure of neuron mitochondria was detected by electron microscope， and the expressions of Aβ protein， Lon protein， dynamin-related protein 1 （DRP1） protein， and MFN1 protein were detected by Western blot. ResultAs compared with the normal group， the latency escape period increased， the number of crossings decreased， the expression of AMPK increased， and the content of ATP decreased in the model group. The expressions of Aβ protein and DRP1 protein increased （P<0.01）， whereas the expressions of Lon protein， MFN1 protein decreased in the model group （P<0.05，P<0.01）， and MFN2 protein decreased. The vacuolation of mitochondria increased and the cristae broke in the model group. As compared with model group， the time of the latent escape period decreased （P<0.01）， and the number of crossings increased in the low-dose and high-dose Si Junziwan groups （P<0.05）. The expression of AMPK （P<0.01） decreased， the content of ATP increased （P<0.01）， the expression of Aβ and DRP1 protein decreased （P<0.05， P<0.01）， and the expression of MFN1 protein was up-regulated （P<0.05） in high-dose Si Junziwan groups. The vacuolation was more obvious in the low-dose Si Junziwan group， whereas the vacuolation was restored and the ridge was clear in the high-dose Si Junziwan group. ConclusionSi Junziwan treats Alzheimer's disease by up-regulating the protein expression of Lon， correcting the disorder of mitochondrial division and fusion protein， and changing the memory function of SAMP8 mice.