Research progress on e cigarette use among adolescents and associated factors / 中国学校卫生

Abstract@#E cigarette has become more and more popular among adolescents, and the awareness and use of e cigarettes among middle and high school students have shown a significant upward trend. E cigarette use is not only harmful to adolescent health, but also may become a gateway to other addictive substances. Individual characteristics, products features, environment and other factors were associated with e cigarette use among adolescents. The purpose of the review is to understand the current status and associated factors of adolescent e cigarette use, so as to provide scientific suggestions for the prevention of e cigarette use among adolescents.

Noradrenaline modulates the spontaneous firing activities of Purkinje cells via α2-adrenergic receptor in mouse cerebellar cortex / 生理学报

Cerebellar Purkinje cells (PCs) exhibit two types of discharge activities: simple spike (SS) and complex spike (CS). Previous studies found that noradrenaline (NA) can inhibit CS and bidirectionally regulate SS, but the enhancement of NA on SS is overwhelmed by the strong inhibition of excitatory molecular layer interneurons. However, the mechanism underlying the effect of NA on SS discharge frequency is not clear. Therefore, in the present study, we examined the mechanism underlying the increasing effect of NA on SS firing of PC in mouse cerebellar cortex in vivo and in cerebellar slice by cell-attached and whole-cell recording technique and pharmacological methods. GABAA receptor was blocked by 100 µmol/L picrotoxin in the whole process. In vivo results showed that NA significantly reduced the number of spikelets of spontaneous CS and enhanced the discharge frequency of SS, but did not affect the discharge frequency of CS. In vitro experiments showed that NA reduced the number of CS spikelets and after hyperpolarization potential (AHP) induced by electrical stimulation, and increased the discharge frequency of SS. NA also reduced the amplitude of excitatory postsynaptic current (EPSC) of parallel fiber (PF)-PC and significantly increased the paired-pulse ratio (PPR). Application of yohimbine, an antagonist of α2-adrenergic receptor (AR), completely eliminated the enhancing effect of NA on SS. The α2-AR agonist, UK14304, also increased the frequency of SS. The β-AR blocker, propranolol, did not affect the effects of NA on PC. These results suggest that in the absence of GABAA receptors, NA could attenuate the synaptic transmission of climbing fiber (CF)-PC via activating α2-AR, inhibit CS activity and reduce AHP, thus enhancing the SS discharge frequency of PC. This result suggests that NA neurons of locus coeruleus can finely regulate PC signal output by regulating CF-PC synaptic transmission.

Establishment and evaluation of a monkey acute cerebral ischemia model

OBJECTIVES: Cerebral ischemia seriously threatens human health and is characterized by high rates of incidence, disability and death. Developing an ideal animal model of cerebral ischemia that reflects the human clinical features is critical for pathological studies and clinical research. The goal of this study is to establish a local cerebral ischemia model in rhesus macaque, thereby providing an optimal animal model to study cerebral ischemia. METHODS: Eight healthy rhesus monkeys were selected for this study. CT scans were performed before the operation to exclude cerebral vascular and intracranial lesions. Under guidance and monitoring with digital subtraction angiography (DSA), a microcatheter was inserted into the M1 segment of the middle cerebral artery (MCA) via the femoral artery. Then, autologous white thrombi were introduced to block blood flow. Immediately following embolization, multisequence MRI was used to monitor cerebrovascular and brain parenchymal conditions. Twenty-four hours after embolization, 2 monkeys were sacrificed and subjected to perfusion, fixation and pathological examination. RESULTS: The cerebral ischemia model was established in 7 rhesus monkeys; one animal died during intubation. DSA and magnetic resonance angiography (MRA) indicated the presence of an arterial occlusion. MRI showed acute local cerebral ischemia. HE staining revealed infarct lesions formed in the brain tissues, and thrombi were present in the cerebral artery. CONCLUSION: We established a rhesus macaque model of local cerebral ischemia by autologous thrombus placement. This model has important implications for basic and clinical research on cerebral ischemia. MRI and DSA can evaluate the models to ensure accuracy and effectiveness.

Application of image guided technique in rhino-orbital related endoscopic surgery / 临床耳鼻咽喉头颈外科杂志

To review retrospectively six cases of rhino-orbital related endoscopic surgeries aided by Fusion electromagnetic system,to explore the indications and clinical value of image guided technique in endonasal endoscopic surgery.Retrospective research methods were used.In this study,six cases of nasal endoscopic sinus surgery using Fusion electromagnetic system were analyzed,including 1 nasal penetrating foreign body,2 optic nerve decompressions,1 orbital apex hemangioma,1 sieve frontal sinus cyst,1 intraorbital mass biopsy.The preparation time of navigation system,the accuracy of intraoperative positioning and surgical coherence,intraoperative and postoperative complications of surgery were recorded.The average preparation time was(8.13 ± 1.858)min.In the navigation,the sinus ostium,orbital cardboard,skull base,optic nerve,internal carotid artery and other important structures can be accurately located in all patients,while registrations had been accurate within 1 mm.Six patients were successfully operated by image guided technique.There was no intracranial or intraorbital complications due to intraoperation error.Image guided technique allows for a truely microinvasive and accurate rhino-orbital related endoscopic surgeries.It requires less preoperative preparation time,has high surgical navigation accuracy,improves the surgical coherence and safety,and reduces the surgical complicationgs.However,as an auxiliary tool,it can not replace the surgeon's anatomical knowledge,surgical training and clinical experience.

Prokaryotic expression and purification of His-tagged-STAT4 (565-748 amino acid) fusion protein / 中国免疫学杂志

Objective:To construct His-tagged peptide of human STAT4 (565-748 amino acid) expression vector and induce its expression in Escherichia coli,followed by purification.Methods:STAT4 gene fragment encoding C-terminal peptide of 565-748 amino acid was amplified by PCR using pEGFP-STAT4 as the template.The PCR product was inserted into prokaryotic expression vector pET-28a and was transformed into component E.coli BL21 cells.By isopropyl-β-D-thiogalactoside(IPTG) induction,fusion protein was found to be expressed in the inclusion body and was denatured by using the urea denaturation buffer followed by renaturation and purifi-cation.Finally the purified protein was confirmed by Western blot.Results:The STAT4 truncated gene encoding 565-748 amino acids peptide was amplified by PCR and inserted into pET-28a vector.After the recombined plasmid was transformed into component BL21, the His-tagged-STAT4 (565-748 amino acids) fusion protein was induced and obtained after denaturation,refolding,purification and dialysis.Conclusion:The eukaryotic expression vector containing the truncated human STAT4 gene encoding 565-748aa peptide has been successfully constructed and the fusion protein was obtained.

Construction of sensitive index evaluation system of psychiatric nursing quality in Henan / 中华护理杂志

Objective To construct sensitive,scientific,targeted index evaluation system of psychiatric nursing quality and provide basis for evaluation and surveillance of psychiatric nursing quality.Methods Based on 3-di-mension quality construction theory,literature analysis and experts group discussion were adopted to preliminarily screen indexes and compile inquiry questionnaire.Two rounds of expert consultation were performed using Delphi technique,and sensitive index evaluation system of psychiatric nursing quality was revised and finalized.Results Positive coefficients of two rounds of expert consultation were 90.63％ and 96.55％,authority coefficients were 0.81 and 0.83,and coordination coefficients were 0.136-0.335;the constructed sensitive index evaluation system of psychiatric nursing quality included 3 first-class indicators and 18 second-class indicators.Conclusion The constructed sensitive index evaluation system of psychiatric nursing quality has psychiatric characteristics.Its effects on nursing quality control and evaluation can be verified from clinical practices,then effective data sharing can be gradually realized.

Analysis of Pathogen Distribution and Drug Resistance in 136 Cases of Bronchoalveolar Lavage Fluid from Patients with Refractory Pulmonary Infection of Our Hospital / 中国药房

OBJECTIVE:To investigate the pathogen distribution and drug resistance situation in bronchoalveolar lavage fluid (BALF) from patients with refractory pulmonary infection,and provide reference for clinical rational drug use. METHODS:The sputum and BALF specimen of 136 inpatients with refractory pulmonary infection from the First People’s Hospital of Zhenjiang City from Jan. 2012 to Dec. 2015 were cultured and identified,pathogen detection was compared,and results of drug sensitivity test for pathogen in BALF specimen was analyzed. RESULTS:The positive rates of sputum and BALF specimen of 136 inpatients were 22.06%and 47.79%,with statistical significance(P<0.01);a total of 32 and 72 strains were isolated,they mainly were Ste-notrophomonas maltophilia,Pseudomonas aeruginosa,Acinetobacter baumannii and Staphylococcus aureus. S. maltophilia in BALF was sensitive to minocycline and levofloxacin;resistance rate of P. aeruginosa to common antibiotics was lower than 50%;A. baumannii was sensitive to imipenem,ampicillin sodium and sulbactam sodium,amikacin and minocycline;S. aureus was sen-sitive to linezolid,chloramphenicol and vancomycin. CONCLUSIONS:The positive rate of BALF specimen is higher than spu-tum,the pathogens are mainly Gram-negative bacteria. Clinic should rationally select antibiotics based on the drug sensitivity test and clinical symptoms.

Clinical Features of Pituitary Stalk Interruption Syndrome in 114 Cases / 中国医学科学院学报

Objective To analyze the clinical characteristics of pituitary stalk interruption syndrome(PSIS). Methods The clinical data including clinical manifestations,laboratory tests,and imaging findings of 114 PSIS patients in our hospital were retrospectively analyzed. Results Of these 114 PSIS patients,102 cases (89.4%) were male. The average age was 21.1?6.1 years. A history of breech delivery was documented in 91 cases (91.9%). Short stature was found in 89 cases (71.8%) and bone age delayed (6.1?5.1) years. Secondary sex characteristics were poor or undeveloped in most patients. The prevalence of deficiencies in growth hormone,gonadotropins,corticotropin,and thyrotropin were 100.0%,94.0%,84.2%,and 74.6%,respectively. Hyperprolactinemia was found in 28.1% of patients. Three or more pituitary hormone abnormalities were found in 105 cases(92.1%). Compared with the 5 cases with history of cephalic delivery,no difference were found in the aspects of height(t=0.297,P=0.634),penile length(t=1.205,P=0.882),testicular volume (U=99.000,P=0.348),growth hormone peak (U=89.000,P=0.186),adrenocorticotropic hormone peak(U=131.000,P=0.967),luteinizing hormone peak(U=98.500,P=0.582),thyroid-stimulating hormone (U=82.000,P=0.162),and the height of anterior pituitary (t=1.676,P=0.107) in the 53 cases with history of breech delivery. Conclusions The clinical manifestations,symptoms,hormone deficiencies were severe in our series. The condition severities were not remarkably different in patients with different delivery ways.

Analysis of 98 Cases of Hypoglycemia Adverse Drug Reaction Literatures Induced by Non-antigyperglycemic Drugs / 中国药房

OBJECTIVE:To study the incidence of hypoglycemia adverse drug reaction(ADR)induced by non-antigyperglyce-mic drugs and provide reference for rational drug use. METHODS:The original literatures of ADR induced by non-antigyperglycemic drugs during 1994-2014 were summarized and analyzed,which were from CNKI,Wanfang database and VIP database with the combi-nation keywords ofhypoglycemiaandabnormal glucose. RESULTS:In total of 98 cases of hypoglycemia ADR,mainly included gatifloxacin,L-asparaginase and naproxen,etc,respectively accounting for 23,6,6 cases;70 cases were administrated viaintrave-nous infusin;the main primary diseases were arthritis,acute pancreatitis and hyperthyroidism except infection. CONCLUSIONS:Med-ical staff should pay more attention to hypoglycemia ADR induced by non-antigyperglycemic drugs,especially the patients with glu-cose metabolism.

Treating Radiation Peumonitis by Zlyin Huoxue Granule Combined Glucocorticoids and Antibiotics: a Clinical Observation / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To observe the clinical effect of Ziyin Huoxue Granule (ZHG) combined glucocorticoids and antibiotics in treatment of radiation pneumonitis.</p><p><b>METHODS</b>Totally 70 radiation pneumonitis patients were assigned to the treatment group and the control group according to random digit table, 35 in each group. All patients received glucocorticoids and antibiotics. Patients in the treatment group additionally took ZHG, one dose per day for 4 successive weeks. Watters clinical-radiologic-physiologic (CRP) score, Karnofsky Performance Status Scale (KPS) , and acute radiation injury classification [set by Radiation Therapy Oncology Group (RTOG)] were observed in the two groups before and after treatment. The application time for antibiotics and glucocorticoids was compared between the two groups.</p><p><b>RESULTS</b>All patients completed this trial, and nobody dropped out or died. There was no statistical difference in Watters-CRP scores, KPS, or RTOG between the two groups before treatment (P > 0.05). Compared with before treatment in the same group, RTOG classification was obviously improved in the two groups (P < 0.05). Compared with the control group, Watters-CRP scores decreased, KPS increased, the application time for antibiotics and glucocorticoids was reduced (P < 0.05). The efficacy of RTOG classification was better in the treatment group than in the control group, but with no statistical difference between the two groups (P > 0.05).</p><p><b>CONCLUSION</b>ZHG combined glucocorticoids and antibiotics was superior in treating radiation pneumonitis to using glucocorticoids or antibiotics alone in elevating Watters-CRP scores, shortening the application time for glucocorticoids and antibiotics, and improving patients' physical conditions.</p>

Effects of a multivitamin/multimineral supplement on young males with physical overtraining: a placebo-controlled, randomized, double-blinded cross-over trial / 生物医学与环境科学（英文）

<p><b>OBJECTIVE</b>To investigate the effects of vitamin-mineral supplement on young males with physical overtraining.</p><p><b>METHODS</b>Two hundred and forty male Chinese field artillery personnel who undertook large scale and endurance military training and were on ordinary Chinese diet were randomized to receive a multivitamin/multimineral supplement or a placebo for 1 week. After a 1-week wash-out period, a cross-over with 1 week course of a placebo or multivitamin/multimineral supplement was conducted. Blood and urine samples were analyzed for adrenal, gonadal and thyroid hormones. In addition, cellular immune parameters (CD3+, CD3+CD4+, CD3+CD8+, CD4/CD8, CD3-CD56+, CD3-CD19+) were examined and psychological tests were performed before and after the training program and nutrition intervention.</p><p><b>RESULTS</b>After a large scale and endurance military training, the participants showed significantly increased thyroid function, decreased adrenal cortex, testosterone and immunological function, and significantly increased somatization, anger and tension. Compared to placebo, multivitamin/ multimineral intervention showed significant effects on functional recovery of the pituitary - adrenal axis, pituitary-gonadal axis, pituitary- thyroid axis and immune system as well as psychological parameters.</p><p><b>CONCLUSION</b>High-intensity military operations have significant impacts on the psychology, physical ability and neuroendocrine-immune system in young males. Appropriate supplementation of multivitamin/multimineral can facilitate the recovery of the psychology, physical ability and neuroendocrine-immune system in young males who take ordinary Chinese diet.</p>

Experimental study on neuroendocrinological and immunological characteristics of the military-trained artillerymen / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Over one million soldiers were treated for battle- or training-fatigue during World War II. Of all ground combat troops, 37% were discharged for psychiatric reasons due to fatigue. The neuroendocrinological and immunological systems played important roles in the work-related fatigue of military personnel. The aim of this study was to investigate the characteristics of fatigue associated with military operations, and we observed changes in the regulatory functions of the neuroendocrinological and immunological systems that may provide theoretical support for improving the combat effectiveness of armies.</p><p><b>METHODS</b>A total of 240 soldiers from the Field Artillery regiment were selected as subjects. Researchers and subjects received training before participating in the study. Data of the subjects' medical histories, physical examinations, scores on a fatigue assessment scale, and assessments of pituitary-adrenal hormones (adrenal cortical hormone (ACTH), cortical hormone (F), and 24-hour urine-free cortisol (UFC)), pituitary-gonadal hormones (luteinizing hormone (LH), follicle-stimulating hormone (FSH), testosterone, estradiol (E2), and prolactin (PRL)), pituitary-thyroid hormones (thyroid-stimulating hormone (TSH), thyroxine (TT4), triiodothyronine (TT3), free thyroxine (FT4), and free triiodothyronine (FT3)), and cellular immune parameters (CD3(+), CD4(+), CD8(+), CD4(+)/CD8(+), B, and NK cells) were investigated before and after large-scale and high-intensity field exercises. Data were statistically analyzed with Student's t test using SPSS software (version 13.0), and P values < 0.05 were deemed to be significant.</p><p><b>RESULTS</b>After the high-intensity military training, the scores on the fatigue scale reflected significant increases of feeling of unpleasantness among soldiers. Additionally, the symptom checklist showed notable increases in somatization scores and significant decreases in psychoticism scores. After intensive military work, levels of plasma ACTH, F, and UFC of soldiers were decreased (P < 0.01). The level of testosterone decreased significantly after the maneuver ((23.51 ± 6.49) versus (18.89 ± 5.89) nmol/L; P < 0.001), whereas the thyroid function (TT3, FT4, and FT3) was markedly increased after the maneuver (P < 0.01). The number of CD3(+), CD4(+), CD4(+)/CD8(+) cells, and B lymphocytes were decreased (P < 0.05), and NK cells were increased (P < 0.001) after the maneuver.</p><p><b>CONCLUSIONS</b>Following high-intensity military operations, the psychological tolerance of soldiers was depressed. And the hypoadrenocorticism (the functional decreases of hypothalamic-pituitary-gonadal and abnormal pituitary-thyroid axis) contributed to the increased levels of fatigue. Hypoimmunity may increase the susceptibility to diseases after high-intensity military operations.</p>

Correlation between 1,5-anhydroglucitol and glycemic excursions in type 2 diabetic patients / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>The accurate and comprehensive assessment of glycemic control in patients with diabetes is important for optimizing glycemic management and for formulating personalized diabetic treatment schemes. This study aimed to analyze the correlation between 1,5-anhydroglucitol (1,5-AG) and glycemic excursions in type 2 diabetic patients.</p><p><b>METHODS</b>Seventy-one outpatients with type 2 diabetes mellitus were randomly recruited from Chinese People's Liberation Army General Hospital. Using a continuous glucose monitoring system (CGMS), these patients' blood glucose levels were monitored for three consecutive days to obtain mean blood glucose (MBG) data. Intraday glycemic excursions were evaluated using the mean amplitude of glycemic excursions (MAGE), the largest amplitude of glycemic excursions (LAGE), standard deviation of blood glucose (SDBG) and the M-value. Interday glycemic excursion was assessed by absolute mean of daily difference (MODD). Postprandial glycemic fluctuations were evaluated using postprandial glucose excursions (PPGE) and postprandial incremental area under the curve (iAUC). Fasting venous blood samples were collected to measure serum 1,5-AG, whole-blood hemoglobin A1c (HbA1c) and serum glycated albumin (GA). Clinical markers of glycemia and parameters of glycemic excursions from CGMS were analyzed using the Pearson correlation coefficient and multivariate stepwise regression.</p><p><b>RESULTS</b>Pearson correlation analysis revealed that 1,5-AG was significantly correlated with MAGE, SDBG, M-value, LAGE, PPGE and iAUC (r values were -0.509, -0.430, -0.530, -0.462, -0.416 and -0.435, respectively, P < 0.01), especially in moderately and well-controlled patients, based on defined HbA1c levels. Multivariate stepwise regression analysis revealed a negative correlation between 1,5-AG and the above parameters, but not HbA1c and GA. Finally, HbA1c and GA were positively correlated with MBG and fasting blood glucose (FBG).</p><p><b>CONCLUSIONS</b>1,5-AG was much better than HbA1c and GA as a marker of glycemic excursions in type 2 diabetic patients. Based on these results 1,5-AG is the best metric for assessing postprandial glucose levels in moderately and well-controlled patients, while HbA1c and GA were superior to 1,5-AG for monitoring MBG and FBG.</p>

Study on the status of unintentional injuries in children under age 7 in Guangzhou / 中华流行病学杂志

Objective To understand the pravelence and distribution of unintentional injuries in children under age 7 in Guangzhou. Methods Data was descriptively analyzed from the Guangzhou Unintentional Injuries Surveillance System among 470 770 children under age 7 living scatterly or collectively. Results The incidence rates of unintentional injuries among children in Guangzhou was 1.48%, among which the incidence rates were: living scatterly as 1.11% living collectively as 1.66%, living in urban areas as 1.36% in rural as 2.52%. In order, the proportion of main causes of children's unintentional injuries were as follows: falls (70.54%), animal injuries (8.48%), burn and scald (5.75%), blunt force injuries (3.92%) , and road traffic injuries (RTIs) (3.48%). The main body parts being injured were head and face (60.00%) , wrist and hand (15.48%), knee and leg (11.70%), elbow and forearm (4.54%), shoulder and arm (2.99%). The degrees of children's unintentional injuries were as follows: mild impairment (85.35%), moderate impairment (9.12%) , and severe impairment (0.57%). Places that the patients went were as follows: hospital outpatient department or emergency room (49.66%), inpatient department or ICU (2.06%), home and kindergarten (43.34%). Conclusion The overall incidence rate of children' s unintentional injuries under age 7 in Guangzhou was 1.48%, with main causes as fall, animal injuries,burn and scald, blunt force injuries, and RTIs. There were considerable differences of characteristics and distributions on age and areas among the patients.

Effect of TPT1 transduction on the biological behaviors of liver cell lines / 中华肿瘤杂志

<p><b>OBJECTIVE</b>The aim of this study was to transfect TPT1 into cell lines SMMC-7721 and L-02, seperately, and to observe the changes of biological behaviors of the cell lines.</p><p><b>METHODS</b>Through lipofectamine, the eukaryotic report expression vector containing TPT1 ORF (open reading frame), pEGFP-N3TPT1, were transducted into hepatocarcinoma cell line SMMC-7721 cells and normal liver cell line L-02 cells, seperately. The transduction was repeated three times in 24 hrs. The differences of biological behaviors between the pEGFP-N3TPT1 and pEGFP-N3 groups were studied by RT-PCR, MTT assay, soft agar colony formation assay and cell cycle analysis.</p><p><b>RESULTS</b>The pEGFP-N3TPT1 transfected cells had a high mRNA level in the two cell lines (P < 0.05) compared with the pEGFP-N3 controls. The ability of proliferation and the soft agar colony formation were enhanced in the SMMC-7721 transducted cells with pEGFP-N3TPT1 compared with that transducted with pEGFP-N3 (P < 0.05), and the cell cycle analysis showed that the cells in the phase G(2)+S/M increased after pEGFP-N3TPT1 transduction. In the L-02 cell line, we obtained similar results, pEGFP-N3TPT1 enhanced the colony formation in plate (P < 0.05), but not make it form colony in soft agar.</p><p><b>CONCLUSIONS</b>TPT1 can enhance malignant phenotype of SMMC-7721 cells and promote the growth of L-02 cells, but not transform L-02 into malignant phenotype.</p>

Clinical Analysis on 102 Drug Eruption Cases of the Last 10 Years in Our Hospital / 中国药房

OBJECTIVE:To provide reference for the prevention,diagnosis and treatment of drug eruptions in the clinic. METHODS:A total of 102 drug eruption cases from 1998 to 2007 in our hospital were analyzed in respect of the allergizing drugs and the types and the clinical features of the drug eruptions. RESULTS: The drug eruptions were mostly induced by antimicrobials (45 cases),followed by antipyretic analgesics (15 cases) and Chinese medicines (15 cases). Erythema polymorphe (39 cases) was the most common clinical type,followed by urticaria (18 cases) and fixed erythema (15 cases). CONCLUSION: Clinician should attach great importance to patients' drug allergic history and medication history so as to reduce the incidence of drug eruption.

Clinical observation on distinctive water-medicine cup therapy for treatment of cervical spondylopathy of cervical type / 中国针灸

<p><b>OBJECTIVE</b>To use distinctive water-medicine cup therapy for treatment of cervical spondylopathy of cervical type as a sample to provide a more effective cupping method for clinic.</p><p><b>METHODS</b>One hundred and forty cases were randomly divided into a medicine cup group (n = 47), a water cup group (n = 47) and a empty cup group (n = 46). The medicine cup group were treated by cupping therapy with a self-made medicine cup with 45 degrees C Chinese herb solution; the water cup group were treated with a cup with 45 degrees C water, and the empty cup group with a cup with nothing. Clinical symptoms and signs were observed for comparison of therapeutic effects.</p><p><b>RESULTS</b>Clinically cured was 39 cases, and markedly effective was 8 cases in the medicine cup group; 20 cases were clinically cured, 22 cases were markedly effective and 5 cases were effective in the water cup group; 12 cases were clinically cured, 19 cases were markedly effective and 15 cases were effective in the empty cup group. There were significant differences in the ratio of cases of different therapeutic effects and the difference of pain score before and after treatment between the medicine cup group and the water cup group (P < 0.05), between the water cup group and the empty cup group (P < 0.05), and between the medicine cup group and the empty cup group (P < 0.01).</p><p><b>CONCLUSION</b>The therapeutic effect of the distinctive medicine cup is better than the water cup group, and the water cup group is better than the empty cup group.</p>

Symptomatic evaluation of late onset hypogonadism in healthy Chinese men / 中华男科学杂志

<p><b>OBJECTIVE</b>To investigate the correlation between the symptoms and serum levels of androgen in healthy Chinese men aged over 40 years, and to work out a new symptomatic inventory for screening late onset hypogonadism (LOH) in Chinese men.</p><p><b>METHODS</b>An 18-item questionnaire was designed and 637 respondents were collected from Beijing, Shanghai, Xi'an and Chongqing. Serum total testosterone, calculated free testosterone, testosterone secretion index and free testosterone index were measured. An analysis of the correlation between symptoms and androgens was performed.</p><p><b>RESULTS</b>The twelve-item symptoms were significantly correlated to 2 or more of the 4 androgens mentioned above, marking up a new symptomatic inventory for screening LOH, with a 70% sensitivity and 46% specificity.</p><p><b>CONCLUSION</b>The new symptomatic inventory is acceptable for the screening purpose. The relatively low specificity may be related to the individual response to the decline of serum androgens and age-related changes of other hormones, such as GH-IGF-1 axis, DHEA, thyroid hormones, melatonin and leptin.</p>

Site-directed Mutagenesis and Enzymatic Activity Assay of Gln49-Phospholipase A_2 Mutant / 中国生物工程杂志

In order to confirm the role that the 49th amino acid residue plays in enzymatic inactivity of Glutamine 49 phospholipase A2(Gln49-PLA2),site-directed mutagenesis of its 49th amino acid gene codon was conducted using PCR.Aspartic acid 49 phospholipase A2(Asp49-PLA2-Q49D-PLA2),the mutant of Gln49-PLA2 was expressed in E.coli with pET32a+ vector.The fusion protein,expressed as inclusion body,after being denatured,was on-column refolded and purified by immobilized metal affinity chromatography(IMAC),and then cleaved by Factor Xa.The mature Q49D-PLA2 mutant was obtained by Hitrap SP cation exchange and Superdex 75 gel filtration chromatography,with the recovery rate of 1.3%,and the specific activity of the mature Q49D-PLA2 mutant was 72 U/mg.It has been demonstrated that the 49th glutamine amino acid residue is the main reason in enzymatic inactivity of Gln49-PLA2 and the results are helpful for denatured protein refolding,especially in rich disulfide bonds conditions.

Potential role of novel hepatocellular carcinoma-associated gene IDD01 in promoting tumorigenesis of HepG2 cell line / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>We have used suppression subtractive hybridization to construct a subtracted cDNA library of hepatocellular carcinoma (HCC) and isolated a panel of differential expression sequence tag (ESTs). By using bioinformatics and rapid amplification of cDNA ends (RACE), we found a novel HCC-associated gene IDD01. To further investigate its function, a recombinant eukaryotic vector pEGFP/ORF was constructed and transfected into the HepG2 cell line.</p><p><b>METHODS</b>The open reading frame (ORF) of IDD01 was amplified by RT-PCR, digested with Bamh I and Hind III, and subcloned into the pEGFP-C1 vector. The ligation reaction was conducted with T4 DNA ligase, and the recombinant vector was named pEGFP/ORF. Untransfer control (control group), pEGFP-C1 (HepG2/C1 group) and pEGFP/ORF (HepG2/ORF group) transfer groups were designed. Gene transfer was conducted with lipofectamine. To obtain stable transfection in HepG2 cells, selection was initiated with 500 microg/ml G418. Cellular IDD01 mRNA levels were assayed by semi-quantitative RT-PCR. The MTT colorimetric method and flow cytometry were used to determine the cell proliferation. The tumorigenic potential of transformed cells was determined from their ability to grow as anchorage-independent colonies on soft agar. Transient transfections were performed to observe subcellular location of GFP-IDD01 fusion protein.</p><p><b>RESULTS</b>A 778 bp specific band of ORF was obtained by RT-PCR, and the positive clone of recombinant plasmid pEGFP/ORF (5.5 Kb) was identified by restriction endonuclease cleavage and sequence. The brightness ratio of IDD01 mRNA was not obvious between control and pEGFP/C1 groups, whereas the ratio of pEGFP/ORF was higher than that in the other two groups. After culture for 24 - 72 hours, the A(490) values in pEGFP/ORF were higher than those in the other two groups (P < 0.01). On histograms of flow cytometry, the S phase ratio of HepG2/ORF cells was significantly higher than that of the control and HepG2/C1 groups. The HepG2/ORF cells were able to form more colonies in soft agar compared with other HepG2 cell lines (P < 0.01). GFP-IDD01 fusion protein predominantly localized in the plasma, whereas EGFP protein diffused all over the cell.</p><p><b>CONCLUSION</b>The IDD01 gene is a positive effector in cell proliferation and contributes to the carcinogenesis and progression of HCC. This gene may serve as a potential target for pharmaceutical intervention of HCC.</p>