Epidemiological Survey of Hemoglobinopathies Based on Next-Generation Sequencing Platform in Hunan Province, China / 生物医学与环境科学（英文）

OBJECTIVE@#This study was aimed at investigating the carrier rate of, and molecular variation in, α- and β-globin gene mutations in Hunan Province.@*METHODS@#We recruited 25,946 individuals attending premarital screening from 42 districts and counties in all 14 cities of Hunan Province. Hematological screening was performed, and molecular parameters were assessed.@*RESULTS@#The overall carrier rate of thalassemia was 7.1%, including 4.83% for α-thalassemia, 2.15% for β-thalassemia, and 0.12% for both α- and β-thalassemia. The highest carrier rate of thalassemia was in Yongzhou (14.57%). The most abundant genotype of α-thalassemia and β-thalassemia was -α 3.7/αα (50.23%) and β IVS-II-654/β N (28.23%), respectively. Four α-globin mutations [CD108 (ACC>AAC), CAP +29 (G>C), Hb Agrinio and Hb Cervantes] and six β-globin mutations [CAP +8 (C>T), IVS-II-848 (C>T), -56 (G>C), beta nt-77 (G>C), codon 20/21 (-TGGA) and Hb Knossos] had not previously been identified in China. Furthermore, this study provides the first report of the carrier rates of abnormal hemoglobin variants and α-globin triplication in Hunan Province, which were 0.49% and 1.99%, respectively.@*CONCLUSION@#Our study demonstrates the high complexity and diversity of thalassemia gene mutations in the Hunan population. The results should facilitate genetic counselling and the prevention of severe thalassemia in this region.

Efficacy of Moxifloxacin against in Zebrafish Model / 生物医学与环境科学（英文）

Objective@#Moxifloxacin (MFX) shows good activity against and can be a possible antibiotic therapy to treat infection; however, other studies have shown a lower or no activity. We aimed to evaluate MFX activity against using zebrafish (ZF) model .@*Methods@#A formulation of labeled with CM-Dil was micro-injected into ZF. Survival curves were determined by recording dead ZF every day. ZF were lysed, and colony-forming units (CFUs) were enumerated. Bacteria dissemination and fluorescence intensity in ZF were analyzed. Inhibition rates of MFX and azithromycin (AZM, positive control) were determined and compared.@*Results@#Significantly increased survival rate was observed with different AZM concentrations. However, increasing MFX concentration did not result in a significant decrease in ZF survival curve. No significant differences in bacterial burdens by CFU loads were observed between AZM and MFX groups at various concentrations. Bacterial fluorescence intensity in ZF was significantly correlated with AZM concentration. However, with increasing MFX concentration, fluorescence intensity decreased slightly when observed under fluorescence microscope. Transferring rates at various concentrations were comparable between the MFX and AZM groups, with no significant difference.@*Conclusion@#MFX showed limited efficacy against using ZF model. Its activity needs to be confirmed.

Comparative transcriptomic analysis of leaves of Tussilago farfara in different development stages / 中草药

Objective: To compare the expression of genes in the leaves of Tussilago farfara that involved in biosynthesis of phenylpropanoids in different developmental stages, and infer the accumulation period of biosynthesis of phenylpropanoids and provide a scientific basis for the resource utilization of leaves of T. farfara. Methods: The Illumina HiSeq2500 highthroughput sequencing method was used to analyze the transcriptome of the leaves of T. farfara in different periods. After obtaining transcriptome data, bioinformatics analysis of gene function annotation was performed to compare the expression of genes related to phenylpropanoid biosynthesis in different periods. Results: A total of 46 793 unigenes were obtained by transcriptome sequencing and the average length was 952.144 8 bp. Among them, 4 774 unigenes were annotated in the public databases NR, Swiss-Prot, eggNOG, GO, and KEGG. According to the assignment of KEGG pathway, 144 unigenes were involved in terpenoid biosynthesis, phenylpropanoid biosynthesis and flavonoids, 65 unigenes were involved in terpenoid biosynthesis, 64 unigenes were involved in phenylpropanoid and 15 unigenes were involved in flavonoids biosynthesis. The enzyme genes involved in the phenylpropanoid biosynthesis were also compared in different development stages, and the results indicated that the expression of PAL, 4CL, HCT, and CCoAOMT, which were closely related to biosynthesis of phenylpropanoids, were highest in September, which means that the contents of these compounds might be highest in September. Conclusion: This study lays the foundation for the biosynthetic pathway and regulation analysis of phenylpropanoids, and provides a scientific basis for the development and the resource utilization of leaves of T. farfara.

Influence of occupational stress and coping styles on mental health and job-leaving intention among county hospital clinicians / 中国职业医学

OBJECTIVE: To explore the influence of occupational stress on mental health and job-leaving intention and the mediating roles of coping styles among county hospital clinicians. METHODS: By stratified cluster random sampling method,352 clinicians from 6 county hospitals in Guangxi Province were selected as study subjects. They were required to complete the questionnaires. The assessment was carried out by General Health Questionnaire,Occupational Stress Scale,Trait Coping Style Questionnaire and Questionnaires on Job-Leaving Intention. RESULTS: The rate of mental disorder in the clinicians was 27. 6%,and it showed no difference in different genders( P > 0. 05). The occupational stress,negative coping style and mental health were positively correlated with job-leaving intention( P < 0. 01). The positive coping style was negatively correlated with mental health and job-leaving intention( P < 0. 01). The occupational stress had significantly direct effects on mental health and job-leaving intention( the standard path coefficients were 0. 58 and 0. 46 respectively,P < 0. 01). The positive coping style showed indirect effects between occupational stress and mental health,as well as occupational stress and job-leaving intention( the effect values were 0. 04 and 0. 08 respectively,P < 0. 05).The negative coping style showed indirect effects between occupational stress and mental health( effect value was 0. 10,P < 0. 05). CONCLUSION: Among county hospital clinicians,the positive coping style had a part mediating effect in occupational stress,mental health and job-leaving intention. Negative coping style only had a part mediating effect in occupational stress and mental health.

Effect of rhynchophylline on behaviors of methamphetamine-dependent zebrafish and the mechanism / 南方医科大学学报

<p><b>OBJECTIVE</b>To observe the effect of rhynchophylline on methamphetamine-dependent zebrafish and explore the possible mechanism.</p><p><b>METHODS</b>Zebrafish were divided into control group, amphetamine group, low- (50 mg/kg) and high (100 mg/kg)-dose rhynchophylline groups, and ketamine (150 mg/kg) group. Conditioned place preference (CPP) was induced in zebrafish with methamphetamine, and the staying time in the drug box and the tracking map of the zebrafish were observed with Noldus Ethovision XT system. The protein expressions of TH, NR2B and GLUR2 in the brain of zebrafish with CPP were detected with Western blotting.</p><p><b>RESULTS</b>Compared with the control group, zebrafish in methamphetamine group showed significant variations in the staying time and swimming distance in the drug box after conditioning (P<0.05) with obvious alterations of NR2B, TH and GLUR2 expressions in the brain (P<0.05). Treatment of methamphetamine-dependent zebrafish with high-dose rhynchophylline significantly reduced the variations in the staying time and swimming distance in the drug box (P<0.05) and in the expressions of NR2B, TH and GLUR2 in the brain (P<0.05).</p><p><b>CONCLUSION</b>Rhynchophylline can inhibit methamphetamine dependence in zebrafish, the mechanism of which may involve the expressions of TH, NR2B and GLUR2 proteins in the brain.</p>

Synthesis and anti-tumor activity of oleanolic acid derivatives / 药学学报

Structural modifications were performed with natural product of oleanolic acid to search for novel anticancer drugs. Ten oleanolic acid derivatives were designed and obtained by the reaction of oxidation, acylation or hydrolyzation, etc. The cytotoxic activity of derivatives was evaluated against HeLa, HepG2 and BGC-823 cells in vitro by MTT assay, gefitinib and etoposide used as a positive control. The results showed that compound 5a was particularly active to inhibit HepG2 cells growth, and anti-tumor activity of compound 7 on HeLa cells was significantly stronger than oleanolic acid. They are worthy to be studied further.

Consensuses on lung cancer treatment by Chinese medicine experts from Beijing and Guangzhou and medication features in the North and South China / 中国中西医结合杂志

To study the consensuses on lung cancer treatment by Chinese medicine experts from North China and South China, and to analyze their medication features from viewpoints such as the medication frequency, combination laws, medication classification by collecting 800 recipes on the treatment of lung cancer patients prescribed by 8 Chinese oncologists from Guanganmen Hospital of China Academy of Chinese Medical Sciences, the Affiliated Hospital of Guangzhou University of Traditional Chinese Medicine, and Guangdong Provincial Hospital of Traditional Chinese Medicine. Results showed that coix seed, poria, pinelliae tuber were the three herbs most commonly used in treatment of lung cancer by all experts. They generally accepted Pi invigorating and phlegm removing method as the basic treatment method for treating lung cancer. Secondly, they usually used white peony root, heterophylla falsestarwort root, and ophiopogonis tuber, etc. (with higher medication frequency) to nourish yin and moisten Fei. Thirdly, consistency was also shown in clearing heat, detoxication, and anticancer. Smilacis glabra, Rhizoma Smilacis Glabrae, Herba Hedyotis diffusae, Herba Scutellariae Barbatae were herbs used by all experts. However, there were differences between oncologists in North China and South China. Oncologists in South China paid more attention to heat toxin and blood stasis, while those in North China paid more attention to supplementing both qi and yin.

About the mutual compensation between advantages of Chinese and Western medical subjective indices for measurement and evaluation / 中国中西医结合杂志

Upon the background of new medical model being formed, to make measurement/evaluation with subjective indices (SIM/E) has become a new hot-spot in Western medical researches and much methodological achievements have been made, but difficulties in comprehensive evaluation and result interpretation are still encountered. SIM/E has played important guideline roles in Chinese medicine (CM) clinical practice, and since it is characterized by holism and syndrome differentiation, it showed great advantage in comprehensive evaluation and result interpretation, though further standardization is yet required. To analyze the related tools and scientific regulations of SIM/E in Western medicine, and establish the concept, domain and conceptual framework of a SIM/E system based on the CM syndrome theory should be feasible to realize the mutual compensation between advantages of the two medical sciences, and promote the progress of SIM/E.

The impact of the HIV-1 envelope (Env) mutation on its assembly of functional pseudovirus / 病毒学报

To find out whether the mutations of HIV-1 Env have influence on the assembly of pseudovirus and their abilities to infect cells, site-directed mutation (A457D)was performed using cycling mutagenesis and selection of mutants with DpnI. Transformation and plasmid purification technologies were used to obtain mutated env clone. Then both the prototype and the mutant were co-transfected with pSG3(delta(env)) to 293FT cells, respectively. Single-cycle infection assay was employed to analyze the effect of the prototype and the mutant on the ability of functional pseudovirus assembly. The transient expression of both the prototype S12-42-1 and mutant S12-42M were confirmed by Western blot essay. The S/CO value was less than 1 for S12-42-1 and 6.65 for S12-42M, demonstrating the functional pseudovirus was generated only for S12-42M. So mutation on HIV-1 Env has influence on the assembly of pseudovirus and their abilities to infect cells.

Hedgehog signaling pathway activates in gastric carcinoma and promotes the proliferation through GLI1 in MKN28 cell / 中华胃肠外科杂志

<p><b>OBJECTIVE</b>To investigate the effect of Hedgehog (HH) pathway on proliferation and in vitro tumorigenicity of gastric cancer cell lines.</p><p><b>METHODS</b>The expression of SHH, PTCH, SMO, SUFU and GLI1 in seven cell lines were tested by RT-PCR. siRNA targeting GLI1 mRNA was transfected into MKN28 cells. Cell proliferation and in vitro tumorigenicity were examined by CCK8 and soft agar colony formation test.</p><p><b>RESULTS</b>SHH in six gastric cancer cell lines was up-regulated. Expression of PTCH in KATOIII cell lines and expression of SUFU in MKN28 and KATOIII were reduced. GLI1 siRNA significantly inhibited the expression of GLI1 in MKN28 cell line. Growth rate and colony formation rate of MKN28 cells treated with GLI1 siRNA were significantly lower than those of control cells (all P <0.001).</p><p><b>CONCLUSIONS</b>HH signaling pathway is widely activated in gastric cancer cell lines. The activation of HH signaling pathway promotes the growth of MKN28 cells.</p>

The preliminary analysis on immunogenicity of DNA vaccines against human papillomavirus 58 / 病毒学报

In order to evaluate the immunogenicity of HPV 58 L1 DNA vaccines, five DNA vaccines had been constructed with pcDNA3.1 vector containing different L1 genes of HPV 58, which were designated as L1h, L1hDeltac, L1S, L1SM and L1wt. The protein expression of DNA vaccines in vitro was tested by Western blot. The ability of forming pseudovirus was evaluated by transfecting DNA vaccine together with pcDNA3.1-h58L2 and pcDNA3.1-GFP into 293FT cells. The neutralizing antibodies and cellular immune response produced in BALB/c mice immunized with the DNA vaccines were detected by using pseudovirus-based neutralization assay and ELISPOT respectively. The results showed that the five DNA vaccines had been successfully constructed; the level of protein expression of L1hDeltac was the highest and those for L1S and L1SM were of medium, while no expressed target protein of L1wt was detected. Only L1S could form the pseudovirus while the other four vaccines could not. L1S and L1h could induce neutralizing antibody. However, the average titer of neutralizing antibody for L1S (1:6,400) was much higher than that for L1h (1:48) and the other three vaccines could not induce neutralizing antibody. No cellular immune response for all five DNA vaccines was detectable by ELISPOT. The results indicated that DNA vaccine against HPV 58 can form pseudovirus in vitro, also can induce high level of neutralizing antibodies. This provides reference for screening HPV vaccine in future.

Electrophysiological characteristic of ATP-activated currents of trigeminal ganglion neurons with different diameter in rat / 中国应用生理学杂志

<p><b>AIM</b>To explore the characteristic of ATP-activated current in trigeminal ganglion (TG) neurons of rat.</p><p><b>METHODS</b>Whole-cell patch-clamp was performed.</p><p><b>RESULTS</b>(1) The majority (92.1%) of TG neurons responded to ATP applied externally with inward currents. We recorded three distinct ATP-activated currents: fast, slow and intermediate, which were concentration-dependent. (2) In general, the fast ATP-activated currents were distributed mainly in small-diameter TG neurons, the slow ATP-activated currents were distributed mainly in large-diameter TG neurons, and the intermediate ATP-activated currents were distributed mainly in intermediate-diameter TG neurons. (3) The time course of rising phase from 10% to 90% of the three distinct ATP-activated currents were as follows: fast: (33.6 +/- 4.5) ms; intermediate: (62.2 +/- 9.9) ms; slow: (302.1 +/- 62.0) ms, and that of desensitizing phase were (399.4 +/- 58.2) ms (fast), and > 500 ms (slow) respectively. (4) From the current-voltage relationship curves, it can be seen that the reversal potential values of the three distinct ATP-activated currents were the same, all being 0-5mV. And they all were characterized by inward rectification. (5) The dose-response curve for fast ATP-activated current shifted downwards as compared with the intermediate ATP-activated current, and that for the slow ATP-activated current shifted upwards.</p><p><b>CONCLUSION</b>The EC50s of the three curves tended to be identical. The results suggested that three kinds of distinct ATP-activated currents could be mediated by various subtypes of P2X receptors assembled by different subunits, and the subtypes existed in TG neurons of different diameters and transmit different information.</p>

Effects of isoflurane on the actions of neuromuscular blockers on the muscle nicotine acetylcholine receptors / 华中科技大学学报（医学）（英德文版）

In this study, we tested the hypothesis that volatile anesthetic enhancement of muscle relaxation is the result of combined drug effects on the nicotinic acetylcholine receptors. The poly A m RNA from muscle by isolation were microinjected into Xenopus oocytes for receptor expression. Concentration-effect curves for the inhibition of Ach-induced currents were established for vecuronium, rocuranium, and isoflurane. Subsequently, inhibitory effects of NDMRs were studied in the presence of the isoflurane at a concentration equivalent to half the concentration producing a 50% inhibition alone. All tested drugs produced rapid and readily reversible concentration-dependent inhibition. The 50% inhibitory concentration values were 889 micromol/L (95% CI: 711-1214 micromol). 33.4 micromol (95% CI: 27.1-41.7 nmol) and 9.2 nmol (95% CI: 7.9-12.3 nmol) for isoflurane. rocuranium and vecuronium, respectively. Coapplication of isoflurane significantly enhanced the inhibitory effects of rocuranium and vecuronium, and it was especially so at low concentration of NMDRs. Isoflurane increases the potency of NDMRs, possibly by enhancing antagonist affinity at the receptor site.

Effects of isoflurane on the actions of neuromuscular blockers on the muscle nicotine acetylcholine receptors / 华中科技大学学报（医学）（英德文版）

In this study, we tested the hypothesis that volatile anesthetic enhancement of muscle relaxation is the result of combined drug effects on the nicotinic acetylcholine receptors. The poly A m RNA from muscle by isolation were microinjected into Xenopus oocytes for receptor expression. Concentration-effect curves for the inhibition of Ach-induced currents were established for vecuronium, rocuranium, and isoflurane. Subsequently, inhibitory effects of NDMRs were studied in the presence of the isoflurane at a concentration equivalent to half the concentration producing a 50% inhibition alone. All tested drugs produced rapid and readily reversible concentration-dependent inhibition. The 50% inhibitory concentration values were 889 micromol/L (95% CI: 711-1214 micromol). 33.4 micromol (95% CI: 27.1-41.7 nmol) and 9.2 nmol (95% CI: 7.9-12.3 nmol) for isoflurane. rocuranium and vecuronium, respectively. Coapplication of isoflurane significantly enhanced the inhibitory effects of rocuranium and vecuronium, and it was especially so at low concentration of NMDRs. Isoflurane increases the potency of NDMRs, possibly by enhancing antagonist affinity at the receptor site.