A study of airborne pollen monitoring and its connection with allergic rhinitis visits in Taiyuan over the summer and autumn seasons / 临床耳鼻咽喉头颈外科杂志

Objective:To explore the distribution of airborne pollen in summer and autumn in Taiyuan, analyze the correlation between pollen characteristics, meteorological factors and allergic sensitization, and provide for the prevention and treatment of allergic diseases in this. Methods:The gravity sedimentation method was used to investigate the types, quantities and dispersion patterns of airborne pollen in Taiyuan City from July 21, 2022 to October 20, 2022. he meteorological and patient information was collected during the same period SPSS 26.0 software. Results:①A total of 17 118 pollen grains were collected, and identified as 14 families, 10 genera, and 4 species. The peak period for pollen dispersal in summer and autumn in Taiyuan City from late August to early September. airborne pollen Artemisia（66.62%）, Cannabis/Humulus（17.79%）, Sophora japonica（8.18%）, Chenopodiaceae/Amaranthaceae（2.83%）, Gramineae（2.11%）. ②The concentration of airborne pollen in Taiyuan City positively correlated with the average temperature（5-20℃） and maximum temperature（11-30℃） within a certain range（r=0.547, 0.315, P<0.05）. ③The content of airborne pollen in Taiyuan City positively correlated with the number of visits and allergen positive rate of patients with allergic rhinitis（AR） in our hospital（r=0.702, 0.747, P<0.05）. Conclusion:The peak period for airborne pollen dispersal during the summer and autumn seasons in Taiyuan City from late August to early September. The dominant pollen is Artemisia, Cannabis/Humulus, Sophora japonica, Chenopodiaceae/Amaranthaceae, Gramineae, and the absolute advantage pollen is Artemisia. Meteorological factors pollen content. Within a certain range, temperature the diffusion and transportation of pollen. The number of pollen grains the number of visits, which can serve as an environmental warning indicator for AR patients to take preventive, thereby reducing the risk of allergies.

Clinical Application of Loop-mediated Isothermal Amplification in Detection of Mycoplasma Pneumoniae / 中国医学科学院学报

Objective To explore the clinical value of one-step visualization loop-mediated isothermal amplification(LAMP)in the detection of Mycoplasma pneumoniae(Mp). Methods One-step visualized LAMP,polymerase chain reaction(PCR),and enzyme-linked immunosorbent assay(ELISA)were used to simultaneously detect 108 clinical Mp specimens in children,which included 73 cases of Mp infection diagnosed by PCR and 35 cases of other chronic/acute respiratory tract infections.On the first day of admission,one-step visualization LAMP,PCR(fluorimetric method),and ELISA were used to test the throat swab and serum sample obtained from the same patient,and the Kappa value was calculated.The consistence between LAMP and PCR and that between LAMP and ELISA were compared.On the fifth day of admission,40 patients were resampled and the findings of these three tests on the first day and on the fifth day were compared. Results One-step visualization LAMP had a sensitivity of 100% and a specificity of 94.3%,whereas ELISA had a sensitivity of 65.8% and a specificity of 82.9%.The ratio of Kappa camparing one-step visualization LAMP and PCR was 0.956 and the ratio of Kappa camparing one-step visualization LAMP and ELISA was 0.38.The number of positive specimens detected by LAMP was higher than that by ELISA on the first day. Conclusions One-step visualization LAMP has excellent sensitivity and specificity in detecting early acute Mp infection.It has high consistency with PCR and can be applied to detect Mp.

Clinical values of B-ultrasound,CT,MRCP and ERCP in diagnosing cholangiocarcinoma:a meta-analysis / 重庆医学

Objective To systematically assess the values of B-ultrasound(US),computed tomography(CT),magnetic resonance cholangiopancreatography(MRCP)and endoscopic retrograde cholangiopancreatography(ERCP)in diagnosing cholangiocarcinoma(CCA).Methods All published literatures on bile duct cancer were collected from the literature databases of PubMed,Medline,Embase,CNKI and Wanfang.Then the patients with bile duct cancer suspected by US,CT,MRCP and ERCP were performed the systematic review.The evaluation indicators included sensitivity and specificity.The summary receiver operating characteristic(SROC)curve was adopted to obtain the area under the curve(AUC)and Q values.The diagnostic values of 4 kinds of method were analyzed.Results Forty-four articles were included,involving 4 364 patients.The pooled sensitivities of US,CT and MRCP were 0.75,0.82 and 0.85 respectively,the specificities were 0.72,0.80 and 0.87 respectively(sensitivity and specificity of ERCP cytology and image were 0.62,0.98;0.88,0.84),the Q values were 0.690 8,0.787 8 and 0.841 7(0.846 1,0.833 2 in ERCP cytology and image).Conclusion The accuracy of CT,MRCP and ERCP for diagnosing bile duct cancer is similar and higher than that of US,which is an effective assisted examination method when compared with US.The pooled specificity of ERCP cytology is obviously higher than that of other examination method and has high clinical diagnostic value in the patients with highly suspected bile duct malignant tumor.

Dynamic changes of postoperative serum TNF-α,IL-6,IgG,IgM and C3 levels in patients with craniocerebral injury and its clinical significance / 国际检验医学杂志

Objective To analyze and explore the dynamic changes of postoperative serum TNF-α,IL-6,IgG,IgM and C3 levels in patients with craniocerebral injury,and to study the effect and evaluation on clinical significance.Methods Eighty-two patients who were diagnosed as craniocerebral injury and treated in our hospital from March 2015 to March 2017 were selected as the clinical research subjects,and the patients were randomly divided into the infection group and the non-infection group,41 cases in each group.The dynamic changes of postoperative serum TNF-α,IL-6,IgG,IgM and C3 levels of two groups were compared.Results Serum TNF-α and IL-6 levels at 1,3 and 7 days after operation in the infection group were higher than those in the non-infection group,and the differences were statistically significant(P<0.05).Serum IgM,IgG and C3 levels at 1,3 and 7 days after operation in the infection group were lower than those in the non-infection group,and the differences were statistically(P<0.05).At 7 days postoperatively,the serum IgG level in the infection group was restored to the levels in the non-infection group,and there was no significant difference(P>0.05).Conclusion Monitoring the postoperative serum TNF-α,IL-6,IgG,IgM and C3 levels in patients with craniocerebral injury is helpful for early diagnosis of postoperative infection,and has a high value in judging the severity of the disease.

Ten significantly differentially expressed genes in prostate cancer: Screening and verification / 中华男科学杂志

<p><b>OBJECTIVE</b>To screen and verify differentially expressed genes in prostate cancer.</p><p><b>METHODS</b>Using DNA microarray, we screened differentially expressed genes in prostate cancer tissue and its adjacent tissue followed by verification by PCR.</p><p><b>RESULTS</b>A total of 1 444 genes were found to be differentially expressed (differentiation ≥ 1.5-fold; P≤ 0.05) in the prostate cancer tissue, of which 769 (53%) were up-regulated and 675 (47%) down-regulated. Fifty percent of the differentially expressed genes showed a 1.5- to 2-fold differentiation, including 396 up-regulated and 182 down-regulated ones. Additionally, 308 up-regulated and 334 down-regulated genes exhibited a >2- to 5-fold, 46 up-regulated and 78 down-regulated genes a > 5- to 10-fold, and 19 up-regulated and 81 down-regulated genes a > 10-fold differentiation. Verification by subjecting 15 most significantly up-regulated and another 15 most markedly down-regulated genes to quantitative real-time PCR (qRT-PCR) showed that most of the genes had a transcriptional profile similar to that in the microarray data, with a Pearson correction coefficient of 0.83 between the microarray data and qRT-PCR results. Totally, 10 significantly differentially expressed genes were identified.</p><p><b>CONCLUSION</b>DNA microarray analysis provides reliable information on differentially expressed genes in prostate cancer and benign tissues. The 10 significantly differentially expressed genes verified by qRT-PCR could possibly become new bio-markers and specific molecules for tumor identification.</p>

Study on clinical efficacy of combination of traditional Chinese medicine and western medicine in treatment of pit viper bites and peripheral blood inflammatory factors / 中国中药杂志

<p><b>OBJECTIVE</b>To observe the clinical efficacy of combination of traditional Chinese medicine and western medicine in the treatment of patient bitten by agkistrodon halys pallas, and the changes in peripheral blood inflammatory factors (hs-PCR, IL-6, TNF-alpha).</p><p><b>METHOD</b>Ninty-eight patients were divided into three groups according to their hospitalization dates: the western medicine group, in which 32 patients were treated with antivenom serum (6 000 U) for five days, once every day; the traditional Chinese medicine group, in which 32 patients were treated with anti pit viper No. 2 concentrated decoction (300 mL), twice to three times every day, for five days; and the combined traditional Chinese medicine and western medicine group, in which 35 patients were treated with the combination of Chinese and Western medicine treatment described above. Then blood samples of all of patients were obtained, and serum factors (hs-PCR, IL-6, TNF-alpha) in peripheral blood were measured by Elisa assay. Another 30 health volunteers were chosen as the normal control group.</p><p><b>RESULT</b>The serum inflammatory factors were significantly higher in all patients of the three groups than that in healthy control before treatment (P < 0.01), and decreased significantly after treatment. In particular, the more remarkable reduction was found in the combined traditional Chinese medicine and western medicine group compared with the western medicine group and the traditional medicine group (P < 0.01). Symptom elimination in the three groups was superior to the western medicine group and the traditional medicine group at the first day and the third day of treatment (P < 0.05, P < 0.01). Total clinical effective rate was 100% in the combined traditional Chinese medicine and western medicine group, 84. 37% in the traditional medicine group and 65.62% in the western medicine group, the clinical effective rate of the combined traditional Chinese medicine and western medicine group was notably superior to that of the western medicine group and the traditional medicine group (P < 0.01).</p><p><b>CONCLUSION</b>The serum inflammatory factors increased significantly in patients bitten by agkistrodon halys pallas. Treatment with the combined traditional Chinese medicine and western medicine can significantly decrease the serum inflammatory factors, and increase clinical effect, with more obvious clinical efficacy compared with the western medicine group and the traditional medicine group.</p>

Cyr61 expression influences cancer cell proliferation and apoptosis via PI3K pathway in human ovarian carcinoma cells / 中华妇产科杂志

Objective To investigate the relationship between cysteine-rich protein 61 ( Cyr61 ) and phosphatidylinositol 3-kinase ( PI3K ) signal pathway on cell proliferation and apoptotic in human ovarian carcinoma cells.Methods Recombinant human Cyr61 (rhCyr61) was pretreated with ovarian carcinoma cells.The expression of Cyr61 protein was detected by confocal spectral microscopy.Then treated the ovarian carcinoma cells with PI3K transduction inhibitors (LY294002) for 24 hours.Cell apoptosis was detected by flow cytometry (FCM).Cell viability was determined by methyl thiazolyl tetrazolium (MTT) method.The mRNA expressions of Cyr61,the protein levels of protein kinase B ( PKB),phospho-PKB and Cyr61 were assaved by real time-PCR and western blot analysis,respectively.Results The Cyr61 and phospho-PKB protein expression in two ovarian carcinoma cells (OV2008 and OVCAR-3 ) were increased in rhCyr61pretreated group.The decreasing of cell apoptosis [ ( 1.4 ±0.9)％,(2.1 ± 1.0)％ ] and increasing of cell proliferation [ ( 124.0 ± 1.8)％,( 133.0 ±2.2)％ ] was detected in the same time,compared with negative control group,there were significant difference ( P ＜ 0.05 ).After exposed to LY294002 for 24 hours,the apoptosis rate of OV2008 and OVCAR-3 in pretreated with rhCyr61 group exposed to LY294002 were (21.1 ± 1.6)％ and (26.4 ± 1.5 )％,respectively.Cells viability [ (59.0 ± 2.3 )％,(51.0 ± 2.0)％ ]was also significantly decreased in OV2008 and OVCAR-3 pretreated with rhCyr61 cells.Meanwhile,the mRNA expressions of Cyr61 (3.2 ± 0.8,6.2 ± 1.1 ) and the protein levels of phospho-PKB and Cyr61 were greatly decreased.Compared with negative control group,there were significant difference in OV2008 and OVCAR-3 cells (all P ＜ 0.0l ).Conclusions The activation of PI3K intracellular signaling pathways may lead to up-regulation of Cyr61 expression.Block PI3K signal pathway could significantly inhibit the expression of Cyr61,and may promote the apoptotic effects and inhibit the cell growth of ovarian carcinoma cells.

Reliability of displayed tidal volume in infants and children during dual-controlled ventilation.

OBJECTIVE: Previous studies have shown a significant difference between ventilator-measured tidal volume and actual-delivered tidal volume. However, these studies used external methods for measurement of compression volume. Our objective was to determine whether tidal volume could be accurately measured at the expiratory valve of a conventional ventilator using internal computer software to compensate for circuit compliance with a dual control mode of ventilation. DESIGN: Clinical study during an 8-month period. SETTING: Pediatric intensive care unit. PATIENTS: All patients admitted to the pediatric intensive care unit during the enrollment period who were mechanically ventilated using the Servo I (Maquet, Bridgewater, NJ) were eligible for this study. INTERVENTIONS: Patients were ventilated using a dual-control mode of ventilatory support and either an infant or adult circuit (with and without circuit compensation). MEASUREMENTS AND MAIN RESULTS: Tidal volume measured at the endotracheal tube using a pneumotachometer was compared with ventilator-displayed tidal volume. Sixty-eight patients were studied between September 2004 and April 2005. Age range was 2 days to 18 yrs (median, 23 mos) and weight range was 2.3 kg to 103 kg (median, 14.5 kg) with 41 male patients (60%). We found ventilator-displayed tidal volume, without circuit compensation, generally overestimates true-delivered tidal volume and, with circuit compensation, generally underestimates true-delivered tidal volume. However, agreement between tidal volume measured at the patient's airway and that measured with and without compensation for circuit compliance was good. The error in both cases, without and with circuit compensation, is relatively greater in infants and small children. CONCLUSIONS: There is an underestimation of delivered tidal volume when compensating for circuit volume loss measured at the ventilator. There is no improvement in measured tidal volume using circuit compensation in small infants and children.

WITHDRAWN: Reliability of displayed tidal volume in infants and children during dual controlled ventilation.

Ahead of Print article withdrawn by publisher: OBJECTIVE:: Previous studies have shown significant difference between ventilator-measured tidal volume and actual-delivered tidal volume. However, these studies utilized external methods for measurement of compression volume. Our objective was to determine whether tidal volume could be accurately measured at the expiratory valve of a conventional ventilator using internal computer software to compensate for circuit compliance, with a dual control mode of ventilation. DESIGN:: Clinical study during an 8-month period. SETTING:: Pediatric intensive care unit. PATIENTS:: All patients admitted to the pediatric intensive care unit during the enrollment period who were mechanically ventilated using the Servo i (Maquet, Bridgewater, NJ) were eligible for this study. INTERVENTIONS:: Patients were ventilated utilizing a dual control mode of ventilatory support and either an infant or adult circuit (with and without circuit compensation). MEASUREMENTS AND MAIN RESULTS:: Tidal volume measured at the endotracheal tube using a pneumotachometer was compared with ventilator-displayed tidal volume. Sixty-eight patients were studied between September 2004 and April 2005. Age range 2 days-18 yrs (median: 23 months), weight range 2.3-103 kg (median: 14.5 kg), with 41 (60%) male. We found ventilator-displayed tidal volume, without circuit compensation, generally overestimates true-delivered tidal volume, and with circuit compensation, generally underestimates true-delivered tidal volume. However, agreement between tidal volume measured at the patient's airway and that measured with and without compensation for circuit compliance was good. The error in both cases, without and with circuit compensation is relatively greater in infants and small children. CONCLUSION:: There is an underestimation of delivered tidal volume when compensating for circuit volume loss measured at the ventilator. There is no improvement in measured tidal volume utilizing circuit compensation in small infants and children.

Detection of pim-1 mRNA in prostate cancer diagnosis / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Pim-1 plays an important role in the apoptosis, proliferation, differentiation of cancer cells and progression of cancer. In this study we detected the expression of pim-1 mRNA in normal prostate, benign prostatic hyperplasia (BPH), and prostate cancer (PCa) and explored its diagnostic value for PCa.</p><p><b>METHODS</b>The prostate tissues were collected from 23 patients with PCa, 37 patients with BPH, and 3 healthy volunteers. Pim-1 mRNA expression levels in these samples were determined by the quantitative real-time PCR (QRT-PCR). The differences of expression were calculated based on a standard curve.</p><p><b>RESULTS</b>The ratio of pim-1 mRNA to beta-actin in the normal prostate, BPH, and PCa were 1.05 +/- 0.04, 2.57 +/- 0.74 and 4.45 +/-0.63, respectively. The differences among PCa, BPH and NT were significant (P < 0.05, respectively).</p><p><b>CONCLUSION</b>Detecting pim-1 mRNA expression by QRT-PCR provides a reliable metric for the diagnosis of PCa.</p>

cDNA macroarray for analysis of gene expression profiles in prostate cancer / 中华医学杂志(英文版)

<p><b>BACKGROUND</b>Early diagnosis and timely treatment are important for improving therapeutic efficiency of prostate cancer. DNA array is a new bio-technology for disease diagnosis. This study was conducted to diagnose prostate cancer with cDNA macroarray and analysis gene expression profiles of some selective genes in prostate cancer.</p><p><b>METHODS</b>Total RNA was isolated from patients with prostate cancer and from normal people, and poly (A) RNA was further purified. Then it was analyzed for differentially expressed genes in prostate cancer and normal prostate by cDNA macroarray system.</p><p><b>RESULTS</b>There were different expressions in the nine prostate-associated specific genes in prostate cancer as compared with normal prostate, in which, 7 were significantly upregulated and 2 were down-regulated.</p><p><b>CONCLUSION</b>As a diagnostic approach at molecular level, the cDNA macroarray is an effectively diagnostic method for prostate cancer.</p>

Diets containing soy protein isolate increase hepatic CYP3A expression and inducibility in weanling male rats exposed during early development.

Hepatic CYP3A enzymes were studied in weanling male Sprague-Dawley rats exposed to diets from gestational d 4 in which the sole protein source was either casein (CAS) or soy protein isolate (SPI). At age 25 d, rats were gavaged with corn oil or one of the CYP3A inducers, dexamethasone (DEX) and clotrimazole (CLT), at a dose of 50 mg/kg. Little CYP3A1 (CYP3A23), CYP3A2, or CYP3A9 mRNA was observed in CAS-fed weanling rats but CYP3A18 mRNA was readily detectable in Northern blots. In contrast, consumption of SPI without inducer treatment resulted in the expression of CYP3A1 (CYP3A23), and CYP3A2 mRNAs, expression of CYP3A apoprotein in hepatic microsomes, and a 2-fold greater turnover of the CYP3A substrate midazolam (P < 0.05). DEX induced CYP3A1, CYP3A2, and CYP3A9 (P < 0.05), but not CYP3A18 mRNA expression in rats fed both diets. Hepatic CYP3A apoprotein expression and midazolam 4-hydroxylation in SPI-fed rats was greater than that of CAS-fed rats after DEX treatment (P < 0.05). CLT also induced CYP3A2 mRNA 2-fold in rats fed both diets but CYP3A apoprotein expression in microsomes from SPI-fed CLT rats was double that of CLT-treated rats fed CAS (P < 0.05). The elevation of CYP3A apoprotein due to SPI and the CYP3A apoprotein induction by DEX and CLT treatment yielded no significant diet x inducer interaction. Analysis of heterologous nuclear RNA expression by RT-PCR using intron-specific primers for CYP3A1 revealed a 14-fold increase in RNA transcription in CAS-fed rats after treatment with DEX (P < 0.05) but no increase in rats fed SPI compared with rats fed CAS even though CYP3A1 mRNA and CYP3A apoprotein were significantly elevated. These data demonstrate that exposure to SPI during early development can increase CYP3A expression via post-transcriptional mechanisms and suggest that early soy consumption has potential effects on the metabolism of a wide variety of CYP3A substrates.