Connexin43,the base of electrical and intercellular chemical signal communication in the myocardial cell,can promote the growth and development of the heart.The decreasing of the number of connexin 43 and its' distribution changes may lead to the changing of the conduction velocity and direction,meanwhile,increase the occurrence of ventricular arrhythmias.Mesenchymal stem cells transplantation and drug therapy can improve the levels and distribution of connexin43 in ill myocardium,and can reduce the occurrence of ventricular arrhythmias.

OBJECTIVE: To investigate the significance of expression of COX-2, p21, Ki67 and HPV in nasal inverted papilloma. METHOD: Detecting COX-2, p21, Ki-67 in 30 cases of nasal inverted papilloma (NIP), 20 cases of nasal polyps (NP) and 10 cases of normal nasal mucosa (NM) by two step immunohistochemical method, and HPV virus by flow-through hybridization method. RESULT: The positive expression rate of COX-2 and Ki-67 in NIP, NP and NM group was decreased in turn, COX-2 had significant difference in the groups(χ2 = 30.00, P< 0. 05); the positive expression rate of Ki-67 had significant differences between NIP and NM group (χ2 = 8. 533, P<0. 05). The expression of COX-2 in NIP tissues was positively correlate with that of Ki-67 by using Spearman rank correlation analysis (r=0.78, P<0.05). Expression of p21 were not observed in NIP group. The positive rate of HPV was 26. 67% in 30 cases of NIP, all of HPV16 type. CONCLUSION COX-2, Ki-67 and HPV infection have certain correlation with the occurrence of NIP. The occurrence of NIP has relationship with inflammatory reaction mediated by COX-2. Ki-67 can well reflect the proliferation activity of tumor cells, and can be used to measure the proliferation rate of nasal inverted papilloma. The COX-2 and Ki-67 have a synergistic role in the pathogenesis of NIP. p21 has no significant relationship with the incidence of NIP. HPV infection is related to the pathogenesis of NIP, but not as a;major factor in the pathogenesis of NIP.
Case-Control Studies ; Cyclin-Dependent Kinase Inhibitor p21 ; biosynthesis ; Cyclooxygenase 2 ; biosynthesis ; Humans ; Ki-67 Antigen ; biosynthesis ; Nasal Mucosa ; Nasal Polyps ; Nose Neoplasms ; genetics ; virology ; Papilloma, Inverted ; genetics ; virology ; Papillomavirus Infections

Objective To observe the effect of Radix astragali (RA) on myocardial connexin-43 in rats with dilated cardiomyopathy (DCM). Methods The dilated cardiomyopathy model in rat was established through intraperitoneal injection with adriamycin. The rats in the model group were randomly divided into RA group and the model control group according to different methods of administration. Rats in RA group were gavaged with Astragalus particles and double-distilled water, and rats in model control group and normal control group were gavaged with an equal amount of double-distilled water daily for four weeks. At the end of 12 weeks, the left ventricular ejection fraction (LVEF) was measured with echocardiogram. The Cx43 mRNA level was tested by reverse transcriptase polymerase chain reaction (RT-PCR). Immunohistochemical method was used to observe myocardial Cx43 expression and distribution. Results Compared with the model control group, the Cx43 mRNA and protein expressions and LVEF were increased signiifcantly in RA group (P<0.05). The disorders in distribution of myocardial Cx43 improved in RA group in contrast to the model control group. Conclusions Radix astragali can improve myocardial Cx43 expression and distribution in DCM rats, and can further improve the cardiac function.

OBJECTIVE: The study is to evaluate our results of patients with sinonasal inverted papilloma (SIP) undergoing endoscopic sinus surgery and to investigate the recurrence relative factors of SIP. METHOD: A retrospec- tive analysis was performed of medical records for 54 cases SIP treated with endoscopic resection. Compared to pre operation imaging evaluation and intraoperative observation, efficacy assessments included endoscopy during follow-up after operation and combined with CT examination results. RESULT: The incidence of 54 cases with ethmoid sinus, part of the lateral wall of the nasal cavity was higher. The recurrence rate was higher in the cases invaded front and/or inferior wall of maxillary sinus, frontal recess. There was no case with middle turbinate. Canceration with the same time accounted for 1.85%. CONCLUSION Misdiagnosis as polyps, the lesion sites of tumour, involving the frontal recess, front and inferior wall of maxillary sinus are the risk factors of recurrence. The preoperative accurate judgment of the primary tumor site and surgical resection completly are the most effective means of preventing recurrence. Postoperative endoscopy examination combined with CT examination is an effective means for the evaluation of recurrence.
Endoscopy ; Ethmoid Sinus ; Frontal Sinus ; Humans ; Maxillary Sinus ; Nasal Cavity ; Neoplasm Recurrence, Local ; Papilloma, Inverted ; surgery ; Papillomavirus Infections ; Paranasal Sinus Neoplasms ; surgery ; Turbinates

ObjectiveTo investigate the relationship between the degenerative mechanisms of lumbar intervertebral disc (LID) and apoptosis.MethodsThe total RNAs were isolated from human LID tissues. Both the mRNAs from the degeneration and normal LID were reversely transcribed to the cDNAs. The cDNAs were labeled with the incorporations of fluorescent dUTP, for preparing the hybridization probes. The mixed probes were then hybridized to the cDNA microarray. After high-stringent washing, the cDNA microarray was scanned for the fluorescent signals and analyzed by computer image analysis. The apoptotic status and the expression of Bcl-2 and Bax in 12 cases of degenerative LID and 10 cases of normal LID were detected with TdT-mediated dUTP-biotin nick end labeling (TUNEL) and immunohistochemistry methods.ResultsAmong the 4096 targets, there were 10 genes related to apoptosis. The expression related to Bax protein gene was up-regulated and it was down-regulated for Bcl-2 protein. In group of normal LID, the average apoptotic index (AI) was (24.897±3.620); percentage of Bcl-2 positive cells was (31.440±4.150)%; percentage of Bax positive cells was (29.372±2.588)%, average optical density (OD) values of positive particles were (0.183± 0.010 ), ( 0.203 ±0.012) and (0.169±0.005) respectively. In group of degenerative LID, the average AI was (49.232±3.440); percentage of Bcl-2 positive cells was (18.239±2.470)%; percentage of Bax positive cells was (52.349±3.764)%; average OD values of positive particles were (0.152±0.003), (0.310±0.008) and (0.262±0.014) respectively. There were significantly differences in AI and expressions of Bcl-2 and Bax proteins between normal LID and degenerative LID (P<0.05).ConclusionCell apoptosis plays an important role in the process of LID degeneration. Both Bcl-2 and Bax take part in the occurrence and progression of LID.

Objective To explore the clinical features, diagnosis, and treatment of congenital disorder of glycosylation type 1a (CDG-Ⅰa), a rare inherited metabolic disease. Methods The clinical data and the gene detection results of one case of CDG-Ia which was discovered because the case had encephalopathy and hepatopathy were retrospectively analyzed. The related literatures were reviewed. Results Male infant suffered with face and trunk rash, motor development retardation, malnutrition, cheek fat plump, low limbs muscle tone, and bilateral crater nipple at 3 months old. Abnormal liver function and mild renal impairment were found after examination. The development quotient was low. Head MRI showed that bilateral frontal and temporal sulcus widening, and cerebellar atrophy. Urinary organic acids, amino acids, carnitine, and biotin activities were normal. Gene sequencing revealed that there were two heterozygous mutations, c.430T>C (p.F144L) and c.713G>C (p.R238P), in the PMM2 gene. The diagnosis of CDG-Ⅰa was confirmed. Both of the infant's parents were healthy, and each of them carries a pathogenic mutation. The infant had an elder brother who had mental disorder and died for liver and kidney function damage and hydronephrosis at 8 months old. Conclusion CDG-Ⅰa is an autosomal recessive disease. For infants with unexplained multiple organ damage, especially combined with intelligent and motor development retardations, strabismus, nipple retraction, and cerebellar atrophy, the possibility of CDG-Ⅰa should be considered. Gene detection of PMM2 can help the diagnosis.

Objective: To explore the short-term effects of communicated activities regarding the China Healthy Lifestyle for All workshop held during September 2018. Method: "National action for three reductions and three health activities" and related content ( "salt reduction," "oil reduction," "sugar reduction," "oral health," "healthy bones," and "healthy weight" ) were used as keywords. Starting September 1, thematic publicity topics were launched and implemented throughout the month. The National Action Office issued promotional materials one day in advance through the WeChat Work Group known as the health promotion network in the mainland, which had been developed by members from different provinces, cities, and counties, to disseminate the materials for use both offline and online. Using search engines such as Baidu search and Sogou search, a third-party professional evaluation agency intelligently captured relevant information and texts from various organizations (including provinces, cities, and countries). The information was gathered and sorted according to different channels and forms; thereby, a database was formed for analysis. The content analysis method was used to quantitatively analyze the change trend of the release volume of related reports, and classified statistics were conducted according to different communication channels and forms. Baidu index, WeChat interactive volume, WeChat index, and Weibo hit times were used for evaluation. Researchers analyzed the difference of release volumes in different provinces (municipalities directly under the central government and autonomous regions), as well as in eastern and central regions. Results: The daily communication trend increased significantly after September, with 42 176 reports on related topics, peaking on September 3 (2 703 reports in a single day); effects of the topic establishment and publicity were shown during the entire month. The Badu index showed the same tendency. The keywords "three reductions," "three health," "all-people action," "oil reduction," "sugar reduction," "salt reduction," "oral health," "healthy bones," and "healthy weight" had become high-frequency words. From the perspective of communication channels, there were 17 576, 11 453, and 8 034 reports by WeChat, the news, and Weibo, respectively, accounting for 41.76%, 27.16%, and 19.05% of the total; these report rates were obviously higher than those of other communication channels. WeChat’s interactions reached 4 064 699, and the WeChat index rose to a peak of 858 275 on September 1, which was 194.44 times higher than on August 10 (before the promotional month); additionally, the number of micro-blogging hits reached 130 907 879. Regarding the form of presentation, in descending order, the most frequent type was graphics, followed by star propaganda, radio drama, and health super material. In addition, the gap between the top five provinces ranked by each channel was large. The number of daily releases varied significantly among provinces (municipalities and autonomous regions), with Beijing taking the top spot with 81 articles, while the western provinces of Xinjiang, Ningxia Hui Autonomous Region, Qinghai Province, and Tibet had relatively low daily releases. Even the gap of rank among the top five in WeChat, news, and individual micro-blogs were larger: Beijing, Shandong Province, and Zhejiang Province were the country’s top three regions in WeChat publishing volume. The communication effect in the eastern, central, and western regions was considerably different, with the eastern region clearly responding better than the other two regions, and the western region had insufficient propaganda capacity as a whole. Conclusion The communication effect of the China Healthy Lifestyle for All month activities in 2018 was quite effective, but the gap in communication effect by provinces was large.

Objective To probe into the influence of polysaccharides of Luotuopeng (Peganum harmala L.,Herb of Common Peganum) on toxicity of PolyQ accumulation in the muscle cells of AM141 strain of Caenorhabditis elegans (C.elegans).Methods The polysaccharides of Luotuopeng were extracted by using water extraction followed by sequential alcohol deposition method,and the content of each precipitation was determined by using phenol-sulfuric acid method.The polysaccharides were added to medium,and then samples were collected for counting the number of fluorescence dots due to PolyQ-YFP accumulation in the muscle cells of C.elegans.The influence of the polysaccharides on toxicity of PolyQ accumulation in AM141 strain of C.elegans was reviewed.The precipitation precipitated by 60％ ethanol with higher activity was purified by using macroporous resin for re-reviewing the activity.Results The mass fractions of the polysaccharides precipitated by 30％ ethanol,60％ ethanol or 80％ ethanol were,respectively,20.07％,21.80％,19.98％.The inhibition rates of the polysaccharides on the fluorescence dots due to PolyQ-YFP accumulation in the muscle cells of C.elegans were,respectively,7.9％,17％ and-1.72％.After the precipitation precipitated by 60％ ethanol purified with macroporous resin,the mass fractions of the polysaccharides,in 10％ and 20％ ethanol elution with higher mass fractions,were,respectively,49.76％ and 38.26％,and the inhibition rates were,respectively,35.25％ and 18.03％.Conclusion The method for reviewing the influence of the polysaccharides on toxicity of PolyQ accumulation through model of AM141 strain of C.elegans is easy,stable and reliable.The polysaccharide precipitated by 60％ ethanol has the highest inhibitory effect on PolyQ accumulation with a dose-effect relationship.

This article introduces a recent paper published in JAMA titled " Tirzepatide for weight reduction in Chinese adults with obesity: The SURMOUNT-CN randomised clinical trial". The paper details the design, results, and implications of a randomized controlled clinical study of the efficacy and safety of tirzepatide in overweight/obese adults in China(SURMOUNT-CN). This study represents the first Chinese evidence supporting tirzepatide for the treatment of obesity, offering a potent therapeutic option for the prevention and treatment of obesity and weight-related comorbidity.

To identify in vivo-induced gene in Streptococcus pneumoniae (S. pn) through a novel in vivo expression technology (IVET), a large promoter-trap library using galU and lacZ as the reporters was constructed. Based on the suicide vector pEVP3, a new vector pEVP3-galU was constructed with promoterless galU gene as an in vivo reporter. Firstly, promoterless galU gene was directly cloned into pEVP3 fusing with promoterless lacZ gene (an in vitro reporter). Then the random pieces of S. pn chromosomal DNA (200-500 bp), obtained by partial Sau3AI restriction digestion, were subcloned into the Bgl II site of pEVP3-galU. Upon introduction of the ligated plasmid library into E. coli DH5alpha by transformation, about 70,000 recombinants were recovered. Considering insert DNA orientation and insert size, this represents 5 coverage of the 2.2 Mb S. pn genome; 90% of these clones had 250- to 500-bp inserts. Thus, the library retained maximal complexity. Transformation by this plasmid library yield 450,000 S. pn transformants. The library was used to infect animals in intraperitoneal model. Those strains survived in vivo while exhibiting a white colony phenotype on TSA agar containing X-gal would indicate that the DNA fragment upstream of the galU reporter contained an in vivo-induced promoter. The promoter-trap library is suitable for screening in vivo-induced gene of S. pn.
Animals ; Cloning, Molecular ; Female ; Genes, Bacterial ; genetics ; Genes, Reporter ; genetics ; Genomic Library ; Mice ; Mice, Inbred BALB C ; Promoter Regions, Genetic ; genetics ; Streptococcus pneumoniae ; genetics