Overexpressed long noncoding RNA CRNDE with distinct alternatively spliced isoforms in multiple cancers / 医学前沿

Alternative splicing is a tightly regulated process that contributes to cancer development. CRNDE is a long noncoding RNA with alternative splicing and is implicated in the pathogenesis of several cancers. However, whether deregulated expression of CRNDE is common and which isoforms are mainly involved in cancers remain unclear. In this study, we report that CRNDE is aberrantly expressed in the majority of solid and hematopoietic malignancies. The investigation of CRNDE expression in normal samples revealed that CRNDE was expressed in a tissue- and cell-specific manner. Further comparison of CRNDE expression in 2938 patient samples from 15 solid and hematopoietic tumors showed that CRNDE was significantly overexpressed in 11 malignancies, including 3 reported and 8 unreported, and also implicated that the overexpressed isoforms differed in various cancer types. Furthermore, anti-cancer drugs could efficiently repress CRNDE overexpression in cancer cell lines and primary samples, and even had different impacts on the expression of CRNDE isoforms. Finally, experimental profiles of 12 alternatively spliced isoforms demonstrated that the spliced variant CRNDE-g was the most highly expressed isoform in multiple cancer types. Collectively, our results emphasize the cancer-associated feature of CRNDE and its spliced isoforms, and may provide promising targets for cancer diagnosis and therapy.

Study on serum level of HTR1A promoter methylation in manic episode of bipolar disorder type Ⅰ / 中华行为医学与脑科学杂志

Objective To explore the correlation between the methylation level of 5-hydroxytryptamine receptor 1A(HTR1A) gene promoter region and severity of symptom in the manic epi-sode patients with bipolar disorder type Ⅰ(BD-Ⅰ). Methods Fifty six manic episode patients with BD-Ⅰand fifty nine healthy controls were randomly included in the study. The level of HTR1A gene promoter meth-ylation was measured with pyrosequencing technique in both manic episode patients with BD-Ⅰ and the healthy controls. The severity of symptoms was assessed with score of Bech-Rafaelsen Mania Rating Scale (BRMS) in patients with BD-Ⅰ. Pearson correlation analysis was employed to explore the correlation be-tween the serum level of HTR1A promoter methylation and score of BRMS in BD-Ⅰgroup. Results In-creased serum level of HTR1A gene promoter methylation was found in manic episode patients with BD-Ⅰ((66. 55±10. 55)%) compared with that in healthy controls((54. 03±8. 85)%)(P<0. 01). Positive corre-lation was found between the serum level of HTR1A gene promoter methylation and total score of BRMS in manic patient with BD-Ⅰ(r=0. 534,P<0. 01). Conclusion The current findings suggest that the serum level of HTR1A gene promoter methylation can be an epigenetic indicator for severity of manic symptom in BD-Ⅰ.

Identification of 3-demethylchuangxinmycin from Actinoplanes tsinanensis CPCC 200056 / 药学学报

Chuangxinmycin (CM) from Actinoplanes tsinanensis was an antibiotic discovered by Chinese scientists about 40 years ago. It contains a new heterocyclic system of indole fused with dihydrothiopyran, whose biosynthetic mechanism remains unclear. CM is used as an oral medicine in the treatment of bacterial infections in China. The simple structure makes CM as an attractive candidate of structure modification for improvement of antibacterial activity. Recently, we analyzed the secondary metabolites of Actinoplanes tsinanensis CPCC 200056, a CM producing strain, as a natural CM analogue. We discovered the first natural CM analogue 3-demethylchuangxinmycin (DCM) as a new natural product. Compared to CM, DCM exhibited a much weaker activity in the inhibition of the bacterial strains tested. The finding provides valuable information for the structure-activity relationship in the biosynthesis of CM.

Efficacy of Acarbose in combination with life style modification on waist circumference in patients with impaired glucose tolerance / 中国糖尿病杂志

Objective To investigate the effect of acarbose on waist circumference (WC) in patients with IGR. Methods A total of 46 subjects with IGT (2 hPG>7.8 mmol/L) were selected in this study. All the subjects were given diet and exercise treatment for half a month and then treated with acarbose for 3 months in combination with life style modification. Self-paired method was adopted to compare islet βcell function and WC before and after the treatment. Results After acarbose treatment for 3 months ,islet βcell function were markedly improved. Insulin secretion of Fins and 2 hIns decreased ,early insulin secretion index (ΔI30/ΔG30 ) significantly increased ,and BMI and WC were reduced significantly (P<0.05) . Multiple regression analysis showed that there was correlation between WC and TG ,insulin resistance index (HOMA-IR) and islet β-cell function index (HOMA-β) (P< 0.05). Conclusion Acarbose in combination with life style modification can improve islet β-cell function in patients with IGR and reduce WC and abdominal fat accumulation as well.

Effect of palonosetron in preventing chemotherapy-induced vomiting / 中国肿瘤临床

Objective:To evaluate the efficacy and safety of palonosetron in preventing chemotherapy-induced vomiting. Meth-ods:A multi-center, randomized, double-blind, and self-cross-over positively controlled clinical trial design was used. All patients were randomized into two groups, as follows:Regiment A (61 cases) and Regiment B (64 cases). Regimen A with palonosetron hydrochlo-ride injection (test agent) was used in the treatment cycle A, whereas granisetron hydrochloride injection (control drug) was used in the cycle B. Treatments were randomly administered on the patients of the two groups. Regimen B was on the contrary, the control drug was used in the cycle A, and the test agent was used in the treatment cycle B. All patients treated with the test agent were classified as the test group, whereas those treated with the control drug were classified as the control group. Complete control rate and adverse reac-tion of acute and delayed vomiting in the two groups during the two cycles of chemotherapy regimen were compared. Results: In Group One, the complete control rate of delayed vomiting was significantly higher in the palonosetron administration cycles than in the granisetron cycles (76.92%vs. 55.38%, P=0.0110). In the same group, the frequency of vomiting was significantly less in palonosetron cycles than in the granisetron cycles during day 1 to day 5 (1.32±3.42 vs. 1.94±3.03, P=0.0096). The incidences of adverse effects were low in both groups. No grades 3 and 4 adverse effects were observed. Conclusion: Palonosetron showed efficacy in preventing the acute and delayed chemotherapy-induced vomiting. The drug is superior to granisetron, specifically in delaying vomiting in Group One. Palonosetron hydrochloride showed slight adverse effects. Hence, this drug can be used in clinic.

Basic experimental research on methylene blue-mediated photody-namic therapy combined with adriamycin for breast carcinoma / 中国肿瘤临床

10.3969/j.issn.1000-8179.2013.12.006

Genetic Modification of Baculovirus Expression Vectors / 中国病毒学·英文版

As a protein expression vector,the baculovirus demonstrates many advantages over other vectors.With the development of biotechnology,baculoviral vectors have been genetically modified to facilitate high level expression of heterologous proteins in both insect and mammalian cells.These modifications include utilization of different promoters and signal peptides,deletion or replacement of viral genes for increasing protein secretion,integration of polycistronic expression cassette for producing protein complexes,and baculovirus pseudotyping,promoter accommodation or surface display for enhancing mammalian cell targeting gene delivery.This review summarizes the development and the current state of art of the baculovirus expression system.Further development of baculovirus expression systems will make them even more feasible and accessible for advanced applications.

Rapid identification of elaiophylin from Streptomyces hygroscopicus 17997, a geldanamycin producer / 生物工程学报

To identify the anti-bacterial compound(s) from Streptomyces hygroscopicus 17997, a geldanamycin producer, silica gel thin layer chromatography (TLC) TLC was used to separate the secondary metabolites of S. hygroscopicus 17997. Compound(s) from the silica gel TLC with anti-Gram positive bacteria activity and becoming red upon color reaction by 2.0 mol/L NaOH was analyzed by HPLC. The UV absorption profile and the retention time of a peak of HPLC were identical to those of authentic elaiophylin. A conserved region of dTDP-glucose-4,6-dehydratase (Tgd) gene was amplified by PCR from the genomic DNA of Streptomyces hygroscopicus 17997. DNA sequence analysis of the amplified DNA fragment indicated that it should be the tgd gene of elaiophylin biosynthetic gene cluster. These results implied that the compound in the peak of HPLC was elaiophylin, a macrodiolide antibiotic. The compound was then confirmed to be elaiophylin by LC-(+)-ESI-MS, which revealed that Streptomyces hygroscopicus 17997 was an elaiophylin producer. At the same time, a fast procedure, which consisted of silica gel TLC, color reaction, HPLC, PCR detection and DNA sequence analysis of tgd gene, and LC-(+)-ESI-MS, was established for rapid identification of elaiophylin and its producer.

The influence of early motor cardiac rehabilitation on the life quality of acute myocardial infarction patients / 中国基层医药

Objective To observe the influence of early motor cardiac rehabilitation on the life quality of acute myocardial infarction patients. Methods 30 acute myocardial infarction patients underwent percutaneous transluminal coronary intervention (PCI) were randomly divided into rehabilitative group and control group which consist of 15 patients. The rehabilitative group received the individual sports programme and health education in addition to conventional treatment and nursing. The control group was just treated by traditional way. Barthel index was used to evaluate the self-care ability and life quality. Results The rehabilitative group had significantly higher self-care ability compared with control group after 30 days' treatment[(85.48 ±6.77)points vs (69.35 ±6.46)points] (P＜0.05).The rehabilitative group could care by themselves and carry on the light physical activity. In addition, heart rehabilitatione frequency was the favorable factor for improving the life quality of acute myocardial infarction patients.Conclusion Early motor cardiac rehabilitation could effectively improve the life quality of acute myocardial infarction patients which had a wide clinical application.

Extraction of lobetyolin from codonopsis with supercritical CO2 / 中国中药杂志

<p><b>OBJECTIVE</b>To develop a green and rapid method for extraction of lobetyolin from C. pilosula.</p><p><b>METHOD</b>Extraction of lobetyolin from C. pilosula with supercritical carbon dioxide in the presence of ethanol was studied. The effects of pressure, temperature, volume of cosolvent and extraction time on efficiency and their interactive relationships were discussed, based on central composite design and response surface methodology (RSM).</p><p><b>RESULT</b>The key effect factor was volume of cosolvent. The extraction yield of lobetyolin was 0.078 6 mg x g(-1) when C. pilosula (40-60 mesh) was extracted at 30 MPa, 60 degrees C and 2 L x min(-1) (as CO2 in normal pressure and temperature) for 100 minutes with supercritical CO2 and 1 mL x min(-1) ethanol as dynamic cosolvent.</p><p><b>CONCLUSION</b>This result is better than that obtained from traditional method. Therefore, the optimized process is valuable for extraction of lobetyolin from C. pilosula.</p>

An elementary introduction to the ways and trains of thoughts of enhancing humanism education in pediatric clinical teaching / 中国医学伦理学

The objects of pediatric service are the children From birth to fourteen. This period is a stage for children's growth and development. so they are weak and need protection,Their health and disease are closely related to their family, social environment and life style,and so on ,In the course of pediatric teaching there ought to be humanism education, especially the combination of the humanities and medical science should be stressed. We should improve knowledge structure of the students and integrative qualities so as to ensure overall development of medical talents and meet the need of the 21st century.

ULTRASTRUCTURE OF THE INTERMEDIOLATERAL NUCLEUS OF THE LUMBAR AND SACRAL SPINAL CORD OF THE RABBI: TNEUROPIL AND SYNAPSES / 解剖学报

The neuropil in the area of the nucleus intermediolateralis is compossed of dendrites, axons, axonal terminals, synapses and processes of the neuroglia passed through them. The dendrites are scattered and variant in size and shape. Small axons, on the other hand, usually have regular contours and tend to travel in bundles. Three types of synaptic connections were found, the axo-dendritic, axo-sometic and axo-axonic synapses. Some of the synapses form glomerulus in which the dendrite or the axon may be the center. The presynaptic terminals contain numerous synaptic vesicles of various patterns. The pre-and postsynaptic membranes may be asymetrical or symetrical. According to the shape of the synaptic vesicles and the relative thickness of the pre-and postsynaptic membrane the synapses may be classified into three types: 1, spheric vesicle asymetrical type, 2, flattened vesicle symetrical type, and 3, intermediate type.

ANATOMICAL STUDIES ON THE BLOOD VESSELS IN EXTRA-INTRACRANIAL ARTERIAL ANASTOMOSIS——1. DISTRIBUTION OF SUPERFICIAL TEMPORAL ARTERY AND OCCIPITAL ARTERY ON THE SCALP AND THEIR MEASUREMENT / 解剖学报

The superficial temporal artery and the occipital artery on both side of 50 Chinese adult cadavers were dissected and the course and distribution of these two arteries were studied and their length, external diameter, internal diameter and the thickness of the walls were meassured.1. The main stem of the superficial temporal arteries runs upward and forward in front of the orifice of the external auditory meatus at an angle on the average of 12.44?8.16? away from the vertical line. This artery was found in 68.68?4.66％ situated before the superficial temporal vein and auriculo-temporal nerve. The average length of the main stem is 3.88?1.04cm; the external diameter 1.64?0.42mm; the internal diameter 1.19?0.10 mm and the thickness of its wall 0.23?0.08 mm. 2. The parietal branch of the superficial temporal artery runs upwards and backwards to the vertex of the skull at an angle of 25.92?10.09 away from the vertical line. The average length is 7.56?1.63 cm. It may be classified into three typs: (1) the single-stem type (2) the bifurcate type (3) the double-stem type. The average external diameter of the branch is 1.24?0.28mm, the internal diameter 0.91?0.19mm, the thickness of its wall 0.17?0.06 mm. There arr 7.45?2.71％ of the cases that the internal diameter is less or equal to 0.5 mm.3. The frontal branch of the superficial temporal artery runs forwards and upwards to the frontal tuber or above the lateral-upper angle of the orbital, then turns upwards to the vertex of the skull. Its average external diameter is 1.31?0.35mm; the internal diameter, 0.91?0.29 mm, and the thickness of its wall, 0.18?0.08mm.4. The Occipital artery runs out to the skin through the fascia between the trapizius and sterocleidomastoid, but sometimes it porferates the muscular fibers of one of these two muscles. The point from which it runs out is located at 2.23?1.12 cm below the external occipital protuberans and 3.41?0.85cm lateral to the midline. Three types of the branching patterns were found: the main-stem, the bifurcate and the plexiform type. The average external dianeter of the occipital artery is 1.47?0.14 mm, the internal diameter,1.13?0.29 mm, and the thickness of its wall, 0.18?0.08mm.

MICROANATOMY OF THE VESSELS OF PINEAL BODY / 解剖学报

Pineal arteries and veins of 46 adult human brains were observed and measured with stero-microscope and light microscope.According to the number of branches, the pineal arteries may be classified into four types: single branched, double branched, three branched and multiple branched types. Among them the single and double branched type occur most frequently. (in 54.55% and 34.09％ respectively), the artery originates mainly from the postcromedial choroidal artery (in 69.72％), and the next more frequent origin is the the quadrigeminal artery (in 28.87%). Some pineal arteries have double origins from abovementioned arteries.Most of the starting points of pineal arteries situate in the recess between the superior colliculus and the pineal body, and less of them on the lateral side of the colliculus or beneath the splenium of the corpus callosum. The artery runs frequently forwards or medially towards the gland and enters it at the middle part of its side. Then it gives branches out of or in the capsule to the surface the gland. The branching patterns may be classified into four types and ten subtypes.The arteries vary in length from 0.2～38.4 mm. The mean external diameter of which is 0.30+0.08 mm, and the internal diameter,0.21?0.07mm.On the pineal body there are a pair of venous stems known as choroidal-pineal veins. They begin from the tela choroidea of the third ventricle. After accepting the dorsal and ventral pineal veins on the ventrolateral side of the pineal body, the two venous stems usually unite to form a single vein which converges into the great cerebral vein.