Histologic and histochemical studies were made upon the collagen and ground substance of the callus and diaphyseal bone at the fracture site in the tibia of rabbits. The main findings were as follows: 1. It was found that the acid mucopolysaccharides were most abundant in the cartilagenous callus, moderate in the newly formed bone trabeculae (fiber bone) and very scanty in the diaphyseal bone and the compact bone after remodelling of the fiber bone, being found only in the wall of lacunae, around the Haversian canals and at the cement lines. 2. In the ground substance of newly formed bone callus and cartilagenous callus, a PAS positive substance was found. The PAS reaction did not run parallelly with the positive reactions for acid mucopolysaccharides in these calluses. It was assumed that there was another mucopolysaccharide present, probably a neutral mucopolysaccharide. 3. During the process of remodelling of fiber bone callus into compact bone, the collagen, acid mucopolysaccharides and PAS positive substance were closely bound together, as evidenced by the disappearance of the positive staining reactions previously found in these components. 4. The matrix of the necrotic ends of the bone fragments and pieces of necrotic bone between the fracture ends were often enveloped and actually invaded by the newly formed bone. Beside osteoclastic activity, this may be a was one way of removal of the necrotic bone. The mechanism needs further clarification.

Preimplantation Genetic Diagnosis(PGD) is a pre-gestational diagnostic technique used to identify genetic defects in embryos created through in vitro fertilization prior to transfer into the uterus.It is currently the only option available to avoid the dilemma of a pregnancy termination due to unfavorable prenatal diagnosis of high risk genetic diseases,however,the limitation of this technique could result in uncertain results.To avoid ethics disputes,patients must undergo a medical informed consent process to fully understand the risks prior to undergoing PGD.This process is often hampered by the patients' restricted recognition ability.Here we discuss possible strategies to help patients completely comprehend the critical issues relating to PGD,including comprehensiveness of PGD related information,and all possible benefits and risks of currently available operational and detection techniques.Based on this, It is necessary to sign a detailed medical informed consent according to different inherited disease.

In an effort to search for more potent antibacterial drugs, the minimum inhibitory concentrations (MIC) of fifteen fosfomycin derivatives at 35℃ for 24h against S. aureus, Enterococcus, P.aeruginosa and Eschericha coli were determined, respectively. Preliminary antibacterial results showed that five derivatives of them were more potent than reference substance (Ⅳa) against some bacteria. Take compound Ⅳg for example, its antibacterial activity was three times as potent as that of compound Ⅳa against S.aureus. The structure-activity relationship of fosfomycin derivatives was investigated according to the mechanism of fosfomycin antibacterial action at molecular level which was pointed by Smeyers et al.

[Objective] To confirm the effects of Neiguan massaged to prevent ache nausea and vomit after laparoscopic cholecystectomy(LC).[Methods] 400 patients were randomly divide into 2 groups;the group 1 were treated by Neiguan massage during the LC,the group 2 nothing during the operation.[Results]Group 1 suffered the same ache in the 1st hour as group 2,but less in the last 24h,and less nausea and vomit too.[Conclusions ]Neiguan massage could obviously prevent ache nausea and vomit after LC.

In order to investigate the effects of simvastatin on secretion and mRNA expression of interleukin-6 (IL-6) and adiponectin in 3T3-L1 adipocytes, mouse 3T3-L1 adipocytes were stimulated with lipopolysaccharide (LPS). Production and mRNA expression of IL-6 and adiponectin in 3T3-L1 adipocytes were measured using enzyme-linked immunosorbent assay (ELISA) and reverse transcriptase polymerase chain reaction (RT-PCR), respectively. The results showed that simvastatin could significantly suppress LPS-induced IL-6 production and mRNA expression in adipocytes (P<0.05), but increase the LPS-induced adiponectin secretion and mRNA expression in a dose-dependent manner (P<0.05). It was suggested that simvastatin could exert beneficial effects on prevention of obesity-induced metabolic changes in adipocytes.

With polyethylene glycol vitamin E succinate (TPGS) as the carrier materials, and berberine hydrochloride ( BER) as model drug, we formed berberine hydrochloride (BER) -loaded TPGS nanomicells (BER-PMs) using filming-rehydration method to improve its solubility and in vitro anti-tumor effect. The transmission electron microscope (TEM) was used to observe the particle appearance; particle detector was used to detect the diameter and Zeta potential; and ultracentrifugation was utilized to determine the encapsulation efficiency (EE) and drug-loading (DD); dynamic dialysis method was used to study the in vitro release behavior of BER-PMs, and the anti-tumor activity against MCF-7 cells was determined by MTT method. Results showed that the average particle size of BER-PMs was (12.45 ± 1.46) nm; particle size was uniform and spherical; drug loading and encapsulation efficiency were (5.7 ± 0.22)% and (95.67 ± 5.35)%, respectively. Zeta potential was (-1.12 ± 0.23) mV; release rate within 24 h was 37.20% and 41.14% respectively in pH 7.4 and pH 6.5 phosphate buffer in vitro; compared with BER, BER-PMs can significantly inhibit MCF-7 cell proliferation (P < 0.05), promote cell apoptosis and improve the anti-tumor activity of BER in vitro. Therefore, the formed berberine hydrochloride micelle can more effectively promote the apoptosis of MCF-7 cell, and improve the drug's in vitro anti-tumor effect.
Antineoplastic Agents ; chemistry ; pharmacology ; Berberine ; chemistry ; pharmacology ; Cell Death ; drug effects ; Cell Survival ; drug effects ; Drugs, Chinese Herbal ; chemistry ; pharmacology ; Humans ; MCF-7 Cells ; Particle Size ; Polymers ; chemistry ; pharmacology ; Solubility

Tetrahydrobiopterin (BH4) is an essential cofactor for all three nitric oxide synthase (NOS isoforms), which plays an important role in vascular diseases. GTP cyclohydrolase 1 (GCH 1) is the first-step and rate-limiting enzyme for BH4 biosynthesis in its de novo pathway. Common GCH1 gene variant C+243T in the 3'-untranslated region predicts NO excretion. The present study examined the predictive role of GCH 1 gene 3'-UTR C+243T variant in the long-term outcome of ischemic stroke. A total of 142 patients with first-onset ischemic stroke were recruited and detected for genotype of GCH1 3'-UTR C+243T by a TaqMan SNP Genotyping assay. Subsequent vascular events and death were determined over a 5-year follow-up period. The frequency of GCH1 3'-UTR +243 C/T or T/T genotype was significantly increased in patients with endpoint events as compared with those without events (74% vs 57.8%, P=0.06). Cox regression survival analysis indicated that an increased probability of death or new vascular events was found in patients with GCH1 3'-UTR +243 C/T or T/T genotype compared with those with GCH1 3'-UTR C/C genotype (40.6% vs 25.5%), GCH1 3'-UTR +243 C/T or T/T genotype relative to GCH1 3'-UTR C/C genotype was associated with the increased risk of death or vascular events even after adjustment for other risk factors (OR=2.171, 95% CI: 1.066-4.424, P=0.033). It was concluded that GCH1 3'-UTR C+243T variant was an independent predictor of worsening long-term outcomes in patients with first-onset ischemic stroke.

This article was aimed to study the relevance between traditional Chinese medicine ( TCM ) syndromes and the treatment of chemotherapy and targeted therapy , in order to provide theoretical support for TCM syndromes of lung cancer in the clinical application . Uniform TCM syndromes questionnaire was used in the TCM syndrome differentiation among lung cancer patients from the Oncology Department of Longhua Hospital, Shanghai University of Traditional Chinese Medicine and TCM Department of Shanghai Pulmonary Hospital. The analysis was made on correlation between distribution rules of TCM syndromes and chemotherapy and targeted therapy . The results showed that among primary lung cancer patients , the most TCM syndromes were syndrome of lung-yin deficiency , lung-q i deficiency , blood stasis in lung collaterals , spleen-q i deficiency , lung-yin deficiency with fire excess . There were certain correlation in TCM syndromes and different TCM therapeutic methods , in which targeted therapy had great significant effect on syndrome of lung-yin deficiency ( P < 0 . 05 ) , after targeted therapy syndrome of lung-yin deficiency increased obviously . It was concluded that there were some regulations in TCM syndromes of lung cancer which take syndrome of lung-yin deficiency, lung-qi deficiency, blood stasis in lung collaterals, spleen-qi deficiency, lung-yin deficiency with fire excess. There were certain correlation in TCM syndromes and different TCM therapeutic methods , after targeted therapy syndrome of lung-yin deficiency increased obviously .

Objective To evaluate the effect of ulinastatin on oxidative stress injury to myocardial cells in diabetic rats in vitro.Methods The H9c2 cells were cultured in DMEM culture medium and the cells at the logarithmic growth phase were seeded in 96-well plates (density 1 × 104 cells/ml,200 μl/well) or in 6-well plates (density 1× 105 cells/m1,2 ml/well).The cells were randomly divided into 4 groups (n=18 each) using a random number table:normal control group (group C),high-glucose group (group HG),high-glucose + oxidative stress group (group HG+OS),ulinastatin +high-glucose+oxidative stress group (group U+HG+OS).The cells were cultured in high-glucose DMEM culture medium (25.0 mmol/L) for 48 h in group HG.After the cells were cultured in high-glucose DMEM culture medium for 24 h,H2O2 with the final concentration of 500 μmol/L was added to the high-glucose culture medium,and the cells were continuously cultured for 24 h in HG+OS and U+HG+OS groups.In group U+HG+OS,ulinastatin 400 U/ml was added to the high-glucose culture medium.The cells were collected for determination of cell viability,H9c2 apoptosis,activity of superoxide dismutase (SOD) and contents of malonadehyde (MDA).Apoptosis rate was calculated.The cell culture supernatant was collected for detection of lactate dehydrogenase (LDH) activity.Results Compared with group C,the cell viability and SOD activity were significantly decreased,and the apoptosis rate,MDA content and LDH activity were increased in the other groups.Compared with HG group,the cell viability and SOD activity were significantly decreased,and the apoptosis rate,MDA content and LDH activity were increased in HG+OS and U+HG+OS groups.Compared with group HG+OS,the cell viability and SOD activity were significantly increased,and the apoptosis rate,MDA content and LDH activity were decreased in group U + HG+ OS.Conclusion Ulinastatin can mitigate oxidative stress injury to myocardial cells in diabetic rats,and inhibited cell apoptosis is involved in the mechanism.

Objective To investigate the effect of pretreatment with dexmedetomidine alone or in combination with sufentanil on myocardial ischemia-reperfusion (I/R) injury in rats.Methods Fifty healthy male Sprague-Dawley rats,weighing 250-300 g,were anesthetized with intraperitoneal pentobarbital sodium 60 mg/kg.Myocardial I/R was induced by occlusion of anterior descending branch of left coronary artery for 30 min followed by 120 min of reperfusion.The rats were then randomly divided into 5 groups (n =10 each):sham operation group (group S),group I/R,dexmedetomidine pretreatment group (group DP),sufentanil pretreatment group (group SP),and dexmedetomidine + sufentanil pretreatment group (group DS).In group S the anterior descending branch was only exposed but not ligated.Dexmedetomidine 0.5μg/kg and sufentanil 0.1μg/kg were injected intraperitoneally 30 min before ischemia in groups DP and SP,respectively.Dexmedetomidine 0.5 μg/kg and sufentanil 0.1 μg/kg were injected intraperitoneally 30 min bbefore ischemia in group DS.Arterial blood samples were collected at 120 min of reperfusion for determination of serum creatine kinase (CK) and lactic dehydrogenase (LDH)concentrations.The rats were sacrificed at 120 min of reperfusion and hearts were removed for microscopic examination.Myocardial infarct size was calculated.The malondialdehyde (MDA) content and superoxide dismutase (SOD) activity in myocardial tissues were measured.Results Compared with group S,the serum CK and LDH concentrations were significantly increased,the myocardial infarct size was enlarged,and SOD activity was decreased in the other groups,MDA content was significantly increased in groups I/R,DP and SP (P ＜ 0.05 or 0.01).Compared with group I/R,the serum CK and LDH concentrations,MDA content and myocardial infarct size were significantly decreased,and SOD activity was increased in groups DP,SP and DS (P ＜ 0.05).Compared with group DS,the serum CK concentration was significantly increased,the myocardial infarct size was enlarged,and MDA content was increased in groups DP and SP,and LDH concentration was significantly increased and SOD activity was decreased in group DP (P ＜ 0.05).The pathological changes were significantly attenuated in groups DP and SP compared with group DS.Conclusion Dexmedetomidine pretreatment can reduce myocardial I/ R injury in rats,dexmedetomidine combined with sufentanil pretreatment provides better efficacy than either alone,and inhibition of lipid peroxidation is involved in the mechanism.