This study was conducted to investigate the paclitaxel loaded by hydrazone bonds in poly(ethylene glycol)-poly(caprolactone) micelles (mPEG-PCL-PTX) on proliferation and apoptosis of human lung cancer A549 cells and its possible mechanisms of anti-tumor activity. The cell proliferation was measured with MTT assay. Flow cytometry were used to analyze the cell cycle. The cell apoptosis was analyzed using Hoechst/P staining. The expression levels of apoptotic genes expression in the mitochondrial apoptosis pathway were detected by RT-PCR and Western blotting, respectively. The mPEG-PCL-PTX could inhibit the proliferation of A549 cells and promote the apoptosis. The Bax, caspase-3 protein expression were increased while Bcl-2 protein expression was decreased in A549 cells. Results showed that the polymer containing hydrazone bond is non-toxic in vitro, the mPEG-PCL-PTX micelles can inhibit the proliferation and induce the apoptosis of A549 cells. Key words: paclitaxel; micelle; A549 cell; proliferation; cell cycle; apoptosis
Apoptosis ; Caspase 3 ; metabolism ; Cell Line, Tumor ; drug effects ; Cell Proliferation ; Humans ; Lung Neoplasms ; metabolism ; pathology ; Micelles ; Paclitaxel ; pharmacology ; Polyesters ; Polyethylene Glycols ; Proto-Oncogene Proteins c-bcl-2 ; metabolism ; bcl-2-Associated X Protein ; metabolism

Objective To develop the analytical method of dexmedetomidine in human plasma by solid phase extraction with gas chromatography-mass spectrometry(SPE-GC/ MS). Methods The human plasma were extracted with a solid phase extraction(SPE) and determined by GC/MS. Results The lowest detectable limit was 0.05μg/mL, the standard curve was linear over the range of 0.2μg/mL~5μg/mL. The absolute recovery was 86.1%~91.5%. The intra-and interday precision was within 7.86% at three concentrations. Conclusion Since the procedure proved to be simple, quick and sensitive, it could be used for the determination of dexmedetomidine in human plasma.

Objective To investigate the effect of blue light on the dioptric development of the eyes of lens-induced myopia(LIM)guinea pigs.Methods Three-week-old trichromatic guinea pigs were randomly divided into three groups:control group,white light LIM(WL)group,and blue light LIM(BL)group(420 nm LED light,with an illuminance of 700 lx);guinea pigs in the latter two groups wore-10.00 D lenses in their right eyes to induce myopia.All guinea pigs under-went a 12 h light/12 h dark treatment cycle.Before and 2,4 weeks after the intervention,the diopter,axial length,retinal thickness and choroidal thickness were measured in all groups.After 4 weeks of intervention,the corneal fluorescent stai-ning and retinal Hematoxylin and Eosin(HE)staining were conducted.Results Compared with the control group,from week 0 to week 2 of the intervention(changes in weeks 0-2),the eyes in the WL group drifted(-2.22±1.28)D towards myopia,the axial length lengthened by(0.40±0.05)mm,and the retinal and choroidal thicknesses reduced by(-7.42± 7.04)μm and(-6.29±4.66)μm,respectively;compared with the WL group,in the BL group,the eyes drifted toward hyperopia by(0.48±1.16)D,the axial length increased by(0.20±0.10)mm,and retinal and choroidal thicknesses in-creased by(1.36±7.46)μm and(8.05±8.08)μm,respectively(all P＜0.05).From week 2 to week 4(changes in weeks 2-4),compared with the control group,the diopter in the WL and BL groups progressed towards myopia,with changes of(-4.64±0.50)D and(-2.11±2.02)D,respectively(both P＜0.05);the axial length lengthened,and reti-nal and choroidal thicknesses reduced in the WL group,with changes of(0.44±0.06)mm,(-7.35±5.87)μm and(-4.84±2.61)μm,while the choroidal thickness and the retinal thickness decreased in the BL group,with changes of(-0.33±5.95)μm and(-4.78±4.96)μm,respectively.Observations of corneal fluorescence staining and retinal HE staining indicated that prolonged blue light exposure could lead to damage to corneal and retinal cells.Conclusion Blue light may influence the development of myopia through choroid-related mechanisms,but its inhibitory effect is not positive-ly correlated with time.Prolonged exposure to blue light can damage the cornea and retina,thereby reducing the inhibitory effect.

OBJECTIVETo study the differential gene expression profiling of rats exposed to silica using the normal rats as control.

METHODSAnimal models were established using intratracheal injection of the lung and 22 107 genes were screened in the differential expression profiling of silicosis by using oligonucleotide bead array. Differential expression profiling data were analyzed by using DAVID bioinformation software.

RESULTSTotally 1567 differentially expressed genes were identified in lungs of silica exposed rats including 765 up-regulated genes and 802 down-regulated genes as compared to the normal controls. Among 406 annotated genes in KEGG pathways, 204 genes and 11 pathways were up-regulated as well as 202 genes and 3 pathways were down-regulated in silica exposed rats.

CONCLUSIONAll 1567 genes are involved in the formation of silicosis. The differential gene expression profile of silicosis describes the general changes in the gene expressions in silicosis at transcriptional level. Further analysis of the identified genes might help reveal the molecular mechanism of pulmonary fibrosis induced by silica.

Animals ; Disease Models, Animal ; Gene Expression Profiling ; Lung ; metabolism ; pathology ; Male ; Oligonucleotide Array Sequence Analysis ; Pulmonary Fibrosis ; genetics ; metabolism ; Rats ; Rats, Wistar ; Silicosis ; genetics ; metabolism ; pathology

OBJECTIVETo explore the impact of patient compliance on the long-term outcomes in hypertensive patients receiving hydrochlorothiazide (HCTZ) based combination therapy with spironolactone or captopril.

METHODSA total of 853 patients with mild to moderate hypertension were recruited and randomly divided into HCTZ group (HCTZ 12.5 mg q.d), spironolactone group (HCTZ 12.5 mg q.d and spironolactone 20 mg q.d), and captopril group (HCTZ 12.5 mg q.d and captopril 25 mg bid) after 2-week placebo washout period and 6-week loading period for HCTZ. Since the efficacy of combination therapy was proven to be better than monotherapy 1 year after therapy beginning, patients in HCTZ group were randomly assigned to spironolactone group or captopril group. The patients were followed up for 4 years. Patients were divided to compliance (n = 424) or non-compliance group (n = 429) according test drug taking questionnaire. During the follow-up time, the blood pressure and the outcomes were recorded monthly, and blood biochemical parameters were determined once a year.

RESULTSAt the end of follow up, incidence of cardio-cerebral vascular events was significantly lower in compliance group (2 fatal, 8 non-fatal) than that in noncompliance group (7 fatal, 21 non-fatal, P < 0.05). Systolic blood pressure [-(19.4 +/- 20.6) mm Hg, 1 mm Hg = 0.133 kPa] and diastolic blood pressure [-(10.7 +/- 13.5) mm Hg] were significantly reduced compared values at baseline and noncompliance group (all P < 0.001) while the reduction did not reach statistically significance in noncompliance group [-(7.3 +/- 18.2) mm Hg and -(3.5 +/- 10.2) mm Hg, all P > 0.05 vs. baseline]. The serum BUN, Cr and UA levels in the compliance group were significantly higher and the serum K(+), CHO, LDL-C level were significantly lower than baseline values. The serum BUN, UA levels in the compliance group were significantly higher while the serum K(+), cholesterol levels were significantly lower than those in the noncompliance group (all P < 0.05).

CONCLUSIONSThis study indicates that patient compliance could affect the long-term outcome and antihypertensive efficacy in hypertensive patients receiving HCTZ based combination therapy with spironolactone or captopril.

Aged ; Antihypertensive Agents ; therapeutic use ; Captopril ; therapeutic use ; Drug Therapy, Combination ; Female ; Follow-Up Studies ; Humans ; Hydrochlorothiazide ; therapeutic use ; Hypertension ; drug therapy ; Male ; Middle Aged ; Patient Compliance ; Spironolactone ; therapeutic use ; Treatment Outcome

OBJECTIVETo study the changes of dietary pattern among adult residents in different areas of Liaoning province from 1989 to 2006.

METHODSHealthy adults (6213 subjects) at age of 18 - 65 years from 480 households in three cities (Shenyang, Yingkou, Wafangdian) and three counties (Qingyuan, Huanren, Chaoyang) were selected with stratified multiple cluster random sampling. The information on nutrient intake of the subjects were collected from datasets of Chinese Health and Nutrition Survey conducted in 1989, 1991, 1993, 2000, 2004, and 2006. Different food intake, the nutrients intake percentages for recommended nutrition intake (RNI) and appropriate intake (AI), and the percentages of total energy and protein from grain, animal product, bean and its product were calculated to assess the residents' dietary pattern and nutrition status. The changes of dietary pattern among adult residents were analyzed.

RESULTSAmong the residents, there were a 38.1% of decreased intake for grain (from 601.9 to 372.5 g/d), 20.5% for potato (from 75.6 to 60.1 g/d), 25.1% for beans (from 38.7 to 29.0 g/d), and a 77.2% of increased intake for fish and shrimp (from 25.0 to 44.3 g/d), 36.9% for livestock and poultry (from 65.6 to 89.8 g/d), 47.7% for fruit (from 70.7 to 104.4 g/d), and intake of milk product (from 5.8 to 21.3 g/d), egg (from 17.3 to 35.7 g/d), vegetable (from 296.1 to 316.3 g/d) were also increased from 1989 to 2006. During the period, the intake percentages of energy and protein from grain decreased from 67.5% (8.7 MJ/12.8 MJ per day) to 51.5% (5.0 MJ/9.6 MJ per day) and from 72.0% (66.2 g/91.9 g per day) to 59.7% (45.3 g/75.9 g per day), and on the contrary those from animal products increased from 8.9% (1.1 MJ/12.8 MJ per day) to 14.8 (1.4 MJ/9.6 MJ per day) and from 15.9% (14.6 g/91.9 g per day) to 27.9% (21.2 g/75.9 g per day), respectively. In 2006, the intake of vitamin A (508.9 µg/d) was 67.6% of it's RNI, intake of vitamin B(2) (0.9 mg/d) was 64.6% and the intake of calcium (453.7 mg/d) was 52.5% of it's AI among the residents.

CONCLUSIONThe intake of plant food decreased and that of animal food increased from 1989 to 2006 and the dietary intakes of calcium, vitamin A, vitamin B(2) need to be increased among adult population of Liaoning province.

Adolescent ; Adult ; Aged ; China ; Diet Surveys ; Feeding Behavior ; Female ; Humans ; Male ; Middle Aged ; Nutritional Status ; Young Adult

Histone deacetylases(HDAC)and its inhibitors have been the hot spots in the field of cancer-treatment.At pres?ent,six HDAC inbibitors(HDACi)have been approved by FDA for the treatment of various hematological neoplasms and solid tu?mors.Besides,a number of new HDACi are undergoing clinical trials in different stages or preclinical experiments,which have shown great inhibitory activities.However,a series of side effects and dose-dependent problems have appeared due to the poor selectivity of inhibitors in HDAC subtypes.So a new HDACi with high-selectity to HDAC subtypes or drug-combination will be of importance to im?prove the therapeutic effect.This review highlights the structure modification in HDACi and multiple drugs combination to summarize the latest evolution of HDACi.

OBJECTIVES: To study the effect of glucose metabolism disorders on the short-term prognosis in neonates with asphyxia. METHODS: A retrospective analysis was performed on the medical data of the neonates with asphyxia who were admitted to 52 hospitals in Hubei Province of China from January to December, 2018 and had blood glucose data within 12 hours after birth. Their blood glucose data at 1, 2, 6, and 12 hours after birth (with an allowable time error of 0.5 hour) were recorded. According to the presence or absence of brain injury and/or death during hospitalization, the neonates were divided into a poor prognosis group with 693 neonates and a good prognosis group with 779 neonates. The two groups were compared in the incidence of glucose metabolism disorders within 12 hours after birth and short-term prognosis. RESULTS: Compared with the good prognosis group, the poor prognosis group had a significantly higher proportion of neonates from secondary hospitals (48.5% vs 42.6%, CONCLUSIONS Recurrent hyperglycemia in neonates with asphyxia may suggest poor short-term prognosis, and it is necessary to strengthen the early monitoring and management of the nervous system in such neonates.
Asphyxia ; Asphyxia Neonatorum/epidemiology* ; Humans ; Hyperglycemia ; Infant, Newborn ; Prognosis ; Retrospective Studies

OBJECTIVE: To review the therapeutic effect of acupuncture and moxibustion on allergic rhinitis based on the network Meta-analysis. METHODS: The randomized controlled trials of acupuncture and moxibustion for allergic rhinitis were retrieved from the databases, starting from the date of establishment to August 17, 2020, i.e. the PubMed, EMbase, Cochrane Library, CNKI, Wanfang and VIP. The traditional Meta-analysis and network Meta-analysis were performed by RevMan5.3 and GeMTC0.14.3. RESULTS: A total of 50 RCTs were included, including 4260 patients, involving 5 kinds of acupuncture and moxibustion therapies, such as acupuncture, moxibustion, acupoint application, acupoint thread-embedding and auricular point therapy.①In term of total effective rate, acupuncture, moxibustion and acupoint thread-embedding were superior to western medication and auricular point therapy ( CONCLUSION The therapeutic effect of acupuncture and moxibustion on allergic rhinitis is better than western medication, and acupoint thread-embedding has the best curative effect.
Acupuncture ; Acupuncture Points ; Acupuncture Therapy ; Humans ; Moxibustion ; Network Meta-Analysis ; Rhinitis, Allergic/therapy*

AIM: To investigate the short-term visual quality outcomes after femtosecond laser small incision lenticule extraction(SMILE)and evolution implantable collamer lens(EVO-ICL)implantation for the correction of moderate myopia.METHODS: Prospective control study. A total of 51 cases(51 eyes)with moderate myopia who underwent SMILE or EVO-ICL implantation surgery at Weifang Eye Hospital from April 2021 to February 2022 were selected. They were divided into SMILE group(30 patients, 30 eyes)and EVO-ICL group(21 patients, 21 eyes)according to the surgical methods. The changes of visual acuity [uncorrected distance visual acuity(UDVA), corrected distance visual acuity(CDVA)], diopter [spherical equivalent(SE)] and related parameters of optical quality analysis system(OQAS Ⅱ)were observed before surgery and at 1wk, 1 and 3mo after surgery, and the quality of vision(QoV)questionnaire was completed.RESULTS: At 3mo after surgery, the safety index(postoperative CDVA/preoperative CDVA)of SMILE gruop and EVO-ICL group were 1.20(1.00, 1.20)and 1.20(1.00, 1.38), respectively, the efficacy index(postoperative UDVA/preoperative CDVA)were 1.00(1.00, 1.20)and 1.00(1.00, 1.20), respectively, and the percentage of SE within ±0.50D was 87% and 100%, respectively. In SMILE group, the objective scattering index(OSI)was increased after surgery, while modulation transfer function cutoff frequency(MTF cutoff), contrast visual acuity(VA)100%, and VA20% at 1wk and 1mo after surgery, and Strehl ratio(SR)and VA9% at each time point after surgery were all decreased compared with those before surgery(all P<0.05). The OSI, MTF cutoff, SR and VA of EVO-ICL group showed no difference at each time point after surgery compared with those before surgery(all P>0.05). The most common visual symptoms after SMILE and EVO-ICL implantation were visual haze and halos, respectively.CONCLUSION: Both SMILE and EVO-ICL implantation have good safety, efficacy and predictability in the short term after the correction of moderate myopia. Both groups had visual symptoms after surgery, but the overall satisfaction of patients was high. Furthermore, EVO-ICL implantation has better objective visual quality performance.