The perforator flap of ipsilateral nasolabial sulcus used to repair the defect after the eradication of nasal vestibular squamous cell carcinoma / 中华耳鼻咽喉头颈外科杂志

Objective: To investigate the feasibility of only surgical resection for nasal vestibular squamous cell carcinoma and the efficacy of perforator flap of ipsilateral nasolabial sulcus in repairing postoperative defects. Methods: The clinical data of 8 cases with squamous cell carcinoma of the nasal vestibule who admitted to Department of Facial Plastic and Reconstructive Surgery, Eye & ENT Hospital, Fudan University were analyzed, including 6 males and 2 females, aged from 38 to 75 years. The tumor of the nasal vestibule was eradicated in time after making definite diagnosis of lesions, then the perforators flap of the ipsilateral nasolabial sulcus was used for repairment, without performing further chemotherapy or radiotherapy after surgery. The tumor recurrence, facial appearance, nostril form, donor area scar, nasal ventilation function, and cutaneous sensation were evaluated after surgery. Descriptive analysis was used in this research. Results: There were 2 cases of stage T1 and 6 cases of stage T2 in 8 cases. After 32 to 45 months of following-up, no recurrence accurred and all the flaps survived well. However, there was about 2 mm necrosis of the transplanted flap in the lateral foot of the alar in one case, which was healed well by carrying out wound care after 10 d. And the dark color flap was occurred in another case, showing the flap's backflow trouble, yet it was improved with addressing timely during 5 d postoperation. Pincusion-like deformity of the transplanted flap occurred in 4 cases (50%), which subsided gradually after 6 months. The morphology of the anterior nostril was altered in 4 cases (50%), but there was no ventilation trouble and no need for addressment in any case. The postoperative facial appearance was rated as excellentor good with hidden scar in the donor site, and the sensation of the transplanted flaps was indistinct from the surrounding tissue after 3 months. Conclusions: Surgical resection of nasal vestibular squamous cell carcinoma with tumor stage T1-2 is a feasible treatment. And it is the one of the best reconstructive methods of the perforator flap of the ipsilateral nasolabial sulcus to repair the deformities after the surgery.

Effects of traditional Chinese medicine fumigation on the clinical parameters of distal radius fracture in the elderly patients after manipulative reduction and external fixation with small splint / 中国基层医药

Objective:To explore the effect of traditional Chinese medicine fumigation and washing on the clinical indicators of elderly patients with distal radius fractures after small splint fixation.Methods:From November 2015 to November 2018, 180 elderly patients with fracture of the distal radius in Ningbo Hospital of Traditional Chinese Medicine were selected, and they were divided into control group and observation group according to the random digital table method, with 90 cases in each group.The two groups were given manual reduction and small splint fixation treatment, and the observation group was treated with traditional Chinese medicine fumigation on the basis of the control group therapy.The related inflammatory cytokines in patients plasma and serum viscosity(TNF-α, IL-1, IL-6) were detected, and the clinical curative effect and adverse reactions were observed.Results:Before treatment, there were no statistically significant differences in plasma viscosity and blood inflammatory factors(TNF-α, IL-1, IL-6) between the two groups( t=-0.171, -0.126, 0.483, 0.459, all P>0.05). After treatment, the above indicators in the two groups were significantly lower than those before treatment(observation group: t=38.970, 14.684, 72.258, 53.612; control group: t=20.098, 19.045, 33.962, 34.822, all P<0.05), which in the observation group were lower than those in the control group ( t=-30.239, -7.043, -31.815, -10.359, all P<0.05). The total effective rate of the observation group was 88.88%(80/90), which was higher than 71.11%(64/90) of the control group, the difference was statistically significant between the two groups(χ2=8.889, P<0.05). Conclusion:For the elderly patients with distal radius fracture, the combination of reduction and small splint fixation and fumigation with traditional Chinese medicine can significantly improve the hemorheology of the patients and reduce the contents of inflammatory factors in the body, with significant efficacy and no adverse reactions, which is worthy of clinical application.

Antioxidant and Antiapoptotic Polyphenols from Green Tea Extract Ameliorate CCl-Induced Acute Liver Injury in Mice / 中国结合医学杂志

OBJECTIVE@#To investigate the phenolic composition, antioxidant properties, and hepatoprotective mechanisms of polyphenols from green tea extract (GTP) in carbon tetrachloride (CCl)-induced acute liver injury mouse model.@*METHODS@#High-performance liquid chromatography was used to analyze the chemical composition of the extract. Antioxidant activity of GTP was assessed by O, OH, DPPH, and ferric-reducing antioxidant power (FRAP) assay in vitro. Sixty Kunming mice were divided into 6 groups including control, model, low-, medium-, and high-doses GTP (200, 400, 800 mg/kg) and vitamin E (250 mg/kg) groups, 10 in each group. GTP and vitamin E were administered at a level of abovementioned doses twice per day for 7 days prior to exposure to a single injection of CCl. Hepatoprotective effects of GTP were evaluated in a CCl-induced mouse model of acute liver injury, using commercial enzyme linked immunosorbent assay kits, histopathological observation, terminal deoxynucleotidyl transferase-mediated dUTPNick-end labeling (TUNEL) assay and Western blot.@*RESULTS@#GTP contained 98.56 µg gallic acid equivalents per milligram extract total polyphenols, including epicatechingallate, epigallocatechin gallate, epicatechin, and epigallocatechin. Compared with the model group, low-, medium-, or high doses GTP significantly decreased serum levels of alanine aminotransferase and aspartate transaminase (P<0.01). Histopathological observation confirmed that pretreatment of GTP prevented swelling and necrosis in CCl-exposed hepatocytes. Hepatoprotective effects of low-, medium-, and high-dose GTP were associated with eliminating free radicals and improving superoxide dismutase, catalase, and glutathione peroxidase activity in the liver. Additionally, low-, medium-, and high-dose GTP decreased cell apoptosis in the CCl-exposed liver (P<0.01). Phosphorylated nuclear factor kappa-B (NF-κB), p53, Bcl-2 associated x protein/B-cell lymphoma/leukemia-2 gene, cytochrome C, and cleaved caspase-3 levels were downregulated compared with the model group (P<0.01).@*CONCLUSION@#GTP achieves hepatoprotective effects by improving hepatic antioxidant status and preventing cell apoptosis through caspase-3-dependent signaling pathways.

Studies on chemical constituents from Isodon eriocalyx distributed in Hezhang / 中草药

Objective: To study the chemical constituents of Isodon eriocalyx. Methods The chemical constituents were isolated and purified by chromatography with silica gel, Sephadex LH-20 and semi-preparative HPLC, and their structures were identified by analysis of spectroscopic data and physicochemical properties as well as relevant references. Results :A total of 20 constituents were isolated from I. eriocalyx, plant material extracted with ethyl aceta, and they were elucidated as maoecrystal D (1), isothymusin (2), coetsoidin A (3), maoecrystal A (4), 5,4’-dihydroxy-6,7-dimethoxy flavone (5), vitexin (6), α-amyrin (7), β-daucosterol (8), odinicin (9), cirsimaritin (10), maoecrystal N (11), epi-macoecrystal P (12), pimaric acid (13), laxiflorin R (14), enmelol (15), maoecrystal B (16), pectolarigenin (17), neolaxiflorin V (18), eriocalyxin A (19), and neorabdosin (20). Conclusion: Compounds 2, 5-7, 13-15, 17, 18 are isolated from this plant for the first time, and compounds 5 and 6 are isolated from the plants of Isodon for the first time.

Chemical constituents from Rabdosia phyllopoda / 中草药

Objective: To investigate the chemical constituents of Rabdosia phyllopoda. Methods: The chemical constituents were isolated and purified by chromatography with silica gel, Sephadex LH-20 and by semi-preparative HPLC, and their structures were identified by analysis of spectroscopic evidences and physicochemical properties. Results: A total of 14 constituents were isolated from R. phyllopoda and elucidated as (Z)-1,1’-biindenyliden (1), β,β-carotene (2), germacrene B (3), 2α,3α,24-trihydrxyolean-12- en-28 oic acid (4), ferulic acid hexacosanyl ester (5), ergosterol peroxide (6), ursolic acid (7), α-amyrin acetate (8), obtusalin (9), betulinic acid (10), 2α,3α,19α-trihydroxy-12-en-28-urs acid (11), 2α,3α-dihydroxyl-12-ene-28 oic acid (12), 2α-hydroxyursolic acid (13), and lutein (14). Conclusion: The 14 compounds are isolated from this plant for first time, and compound 1, 3, 6, 9, 14 are isolated from the plants of R. phyllopoda for the first time.

Chemical constituents from Isodon coetsa distributed in Guizhou / 中草药

Objective: To investigate chemical constituents from Isodon coetsa distributed in Guizhou. Methods: Chemical constituents were isolated and purified by chromatography with silica gel, Sephadex LH-20, and semi-preparative HPLC, and their structures were identified by analysis of spectroscopic evidences and physicochemical properties as well as relevant references. Results: A total of 19 compounds were isolated from plant material extracted with 95% aqueous methanol, which were elucidated as β-sitosterol (1), stigmasterol (2), β-daucosterol (3), methyl linolenat (4), 9,12-octadecadienoic acid-2-hydroxy-1,3-propanedinyl ester (5), ursolic acid (6), oleanoic acid (7), 3β-hydroxy-urs-20-en-28-oic acid (8), betulinic acid (9), kurarinone (10), maslinic acid (11), 2α-hydroxy ursolic acid (12), 2α,3α-dihydroxy-urs-12-en-28-oic acid (13), 2α,3α,24-trihydrxyolean-12-en-28-oic acid (14), 2α,3β,24- trihydroxyolean-12-en-28-oic acid (15), formononetin (16), emodin (17), uracil (18), and sucrose (19). Conclusion: Compounds 2, 4, 5, 9, 11, 13-19 are isolated from this plant for first time, and compounds 11, 17, 19 are isolated from the genus of Isodon for the first time.

Application of mutated inbred animal models in the experimental teaching of medical genetics / 中国比较医学杂志

Objective Mutated inbred animal model is introduced to the practical course of genetic diagnosis in the hope that medical students are able to apply what they have learned to clinical cases, based on a deep understanding of principle and technology on gene mutation detection. Methods We integrated DNA extraction, polymerase chain reaction, agarose gel electrophoresis, and gel imaging analysis into a comprehensive experiment and arranged 4-year-programme undergraduates majoring in preclinical medical sciences to conduct it with the purpose of investigating the internal relations between phenotype and genotype in a hairless Uncv mouse model. Subsequently, the questionnaire aimed at evaluating learning effect on the part of students was handed out and their feedbacks were analyzed. Results More than 90% of respondents are satisfied with the general learning effect. Especially, 98. 7% of students support the enhancing effect of the new teaching mode on their research skills and 96% consider the practical course helpful to their problem-solving ability. Conclusions The introduction of mutated inbred animal model to the practical system of molecular diagnostics proves beneficial to boost students' learning effect and scientific research quality. Our practice also provokes thoughts on the further utilization of animal models in teaching system of medical sciences.

Application of mutated inbred animal models in the experimental teaching of medical genetics / 中国比较医学杂志

Objective Mutated inbred animal model is introduced to the practical course of genetic diagnosis in the hope that medical students are able to apply what they have learned to clinical cases, based on a deep understanding of principle and technology on gene mutation detection. Methods We integrated DNA extraction, polymerase chain reaction, agarose gel electrophoresis, and gel imaging analysis into a comprehensive experiment and arranged 4-year-programme undergraduates majoring in preclinical medical sciences to conduct it with the purpose of investigating the internal relations between phenotype and genotype in a hairless Uncv mouse model. Subsequently, the questionnaire aimed at evaluating learning effect on the part of students was handed out and their feedbacks were analyzed. Results More than 90% of respondents are satisfied with the general learning effect. Especially, 98. 7% of students support the enhancing effect of the new teaching mode on their research skills and 96% consider the practical course helpful to their problem-solving ability. Conclusions The introduction of mutated inbred animal model to the practical system of molecular diagnostics proves beneficial to boost students' learning effect and scientific research quality. Our practice also provokes thoughts on the further utilization of animal models in teaching system of medical sciences.

Research progress on Chinese materia medica for reversing tumor multidrug resistance / 中草药

Multidrug resistance (MDR) is the main reason for the failure of cancer chemotherapy and also has long plagued the tumor therapy in clinic. The formation of MDR is a complex process with multi gene, multi factor, multi levels, multi structure, and multi steps. To overcome the MDR in tumor cells and improve the curative effect of anticancer drug have become the focus and key topic in tumor research. Nowadays most Western medicine reversal agents only aim at single resistance mechanism and reversal, but they have many adverse reactions which restrict the clinical use. The treatment of malignant tumor with traditional Chinese medicine (TCM) has its unique advantages and gratifying achievements in clinic, more and more anticancer drugs of Chinese materia medica (CMM) are being excavated, studied, and used. CMM used for the treatment of the disease with the properties of multi-channel, multi link, multi targeted effect, could significantly improve the chemotherapy drugs on tumor cytotoxicity. Many scholars are devoted to TCM reversing MDR in cancer. This paper discusses the mechanism of MDR; The studies on the reversal of MDR of tumor with CMM are reviewed in this paper.

Protective effect of Sanhuangyinchi Fang drug serum on hydrogen peroxide-induced DNA oxidative damage in LO2 cells / 南方医科大学学报

<p><b>OBJECTIVE</b>To study the protective effect of Sanhuangyinchi Fang drug serum (SF) against hydrogen peroxide-mediated DNA oxidative damage in LO2 cells.</p><p><b>METHODS</b>The LO2 cells were randomly divided into the control group, H(2)O(2) group, SF groups (5%, 10%, and 15%) and vitE group. The morphological features of the treated LO2 cells were observed under inverted microscope. The viability of the treated cells was assessed with CCK-8 method, and the activity of SOD, CAT and GSH-PX were detected biochemically. Reactive oxygen species (ROS) levels, the content of 8-OHdG, and DNA damage of the cells were evaluated by flow cytometry, ELISA, and Comet assay, respectively.</p><p><b>RESULTS</b>Compared with H(2)O(2) group, the cells in SF groups (10% and 15%) and vitE group showed higher cell survival rate (P<0.05) and higher SOD, CAT, GSH-PX (P<0.05) and ROS scavenging activities (P<0.01) with markedly decreases the content of 8-OHdG (P<0.01) and reduced tailing ratio, tail length, tail moment and Olive tail moment (P<0.05).</p><p><b>CONCLUSION</b>SF drug serum, especially at the concentration of 15%, can protect LO2 cells from H(2)O(2)-mediated DNA oxidative damage.</p>

Involvement of acid-sensing ion channel 1a in functions of cultured human retinal pigment epithelial cells / 华中科技大学学报（医学）（英德文版）

In the retina, pH fluctuations may play an important role in adapting retinal responses to different light intensities and are involved in the fine tuning of visual perception. Acidosis occurs in the subretinal space (SRS) under pathological conditions such as age-related macular degeneration (AMD). Although it is well known that many transporters in the retinal pigment epithelium (RPE) cells can maintain pH homeostasis efficiently, other receptors in RPE may also be involved in sensing acidosis, such as acid-sensing ion channels (ASICs). In this study, we investigated whether ASIC1a was expressed in the RPE cells and whether it was involved in the function of these cells. Real-time RT-PCR and Western blotting were used to analyze the ASIC1a expression in ARPE-19 cells during oxidative stress induced by hydrogen peroxide (H(2)O(2)). Furthermore, inhibition or over-expression of ASIC1a in RPE cells was obtained using inhibitors (amiloride and PCTx1) or by the transfection of cDNA encoding hASIC1a. Cell viability was determined by using the MTT assay. The real-time RT-PCR and Western blotting results showed that both the mRNA and protein of ASIC1a were expressed in RPE cells. Inhibition of ASICs by amiloride in normal RPE cells resulted in cell death, indicating that ASICs play an important physiological role in RPE cells. Furthermore, over-expression of ASIC1a in RPE cells prolonged cell survival under oxidative stress induced by H(2)O(2). In conclusion, ASIC1a is functionally expressed in RPE cells and may play an important role in the physiological function of RPE cells by protecting them from oxidative stress.

Involvement of acid-sensing ion channel 1a in functions of cultured human retinal pigment epithelial cells / 华中科技大学学报（医学）（英德文版）

In the retina, pH fluctuations may play an important role in adapting retinal responses to different light intensities and are involved in the fine tuning of visual perception. Acidosis occurs in the subretinal space (SRS) under pathological conditions such as age-related macular degeneration (AMD). Although it is well known that many transporters in the retinal pigment epithelium (RPE) cells can maintain pH homeostasis efficiently, other receptors in RPE may also be involved in sensing acidosis, such as acid-sensing ion channels (ASICs). In this study, we investigated whether ASIC1a was expressed in the RPE cells and whether it was involved in the function of these cells. Real-time RT-PCR and Western blotting were used to analyze the ASIC1a expression in ARPE-19 cells during oxidative stress induced by hydrogen peroxide (H(2)O(2)). Furthermore, inhibition or over-expression of ASIC1a in RPE cells was obtained using inhibitors (amiloride and PCTx1) or by the transfection of cDNA encoding hASIC1a. Cell viability was determined by using the MTT assay. The real-time RT-PCR and Western blotting results showed that both the mRNA and protein of ASIC1a were expressed in RPE cells. Inhibition of ASICs by amiloride in normal RPE cells resulted in cell death, indicating that ASICs play an important physiological role in RPE cells. Furthermore, over-expression of ASIC1a in RPE cells prolonged cell survival under oxidative stress induced by H(2)O(2). In conclusion, ASIC1a is functionally expressed in RPE cells and may play an important role in the physiological function of RPE cells by protecting them from oxidative stress.

Relative analysis of OPN and its related signal molecules in hepatocellular carcinoma / 中华肝脏病杂志

Osteopontin (OPN) has close relationship with metastasis in hepatocellular carcinoma but its downstream signal pathways have not been well defined in hepatocellular carcinoma. The object of this study is to identify the associated signal pathways in human HCC tissues. The expressions of OPN, intergrin aV, CD44v6, P-FAK, FAK, P-Src, Src, P-ERK and P-AKT were assayed using TMA analysis. The relationship of OPN with P-ERK, P-Src and P-AKT were explored and the role in HCC metastasis was analysed. The expression levels of OPN, intergrin aV, CD44v6, P-FAK, P-Src, Src, P-ERK and P-AKT in HCC tissue were significantly higher than that in normal tissue (P value is less than 0.05). No significant difference was found between the expression levels of FAK in HCC tissue and normal tissue (P value is more than 0.05). OPN expression was significantly associated with Integrin av (P value is less than 0.01), CD44V6 (P value is less than 0.01) and P-ERK (P value is less than 0.05) but not with P-Src, P-FAK and P-AKT (P value is more than 0.05). The expressions of P-FAK (P value is less than 0.05), P-Src (P value is less than 0.01) and P-AKT (P value is less than 0.05) were significantly associated with Integrin av and the P-FAK expression was also significantly associated with CD44V6 (P value is less than 0.01). OPN promotes HCC metastasis though Integrin av/CD44V6/MAPK pathway in human HCC.

High expression of thrombin receptor PAR1 in peritumoral liver tissue is associated with poor survival after curative resection of hepatocellular carcinoma in early stage / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To evaluate the relationship between PAR1 (Protease-Activated Receptor 1) expression and the clinicopathologic features and to investigate the prognostic value of PAR1 expression in hepatocellular carcinoma (HCC) in early stage after curative resection.</p><p><b>METHODS</b>Real-time PCR was used to detect PAR1 expression in 41 pairs of tumors and matched peritumoral samples of HCC in early stage. Prognostic value of PAR1 mRNA expression was evaluated. Meanwhile, another 49 tissue paraffin slices of HCC were tested using immunohistochemistry (Envision) and the prognostic value of PAR1 expression and other clinicopathologic factors were evaluated.</p><p><b>RESULTS</b>Peritumoral PAR1 mRNA expression was significantly increased in HCCs from the patients with tumor recurrence as compared with those without recurrence (P < 0.05). Peritumoral PAR1 protein expression was related to tumor differentiation (P < 0.05). Kaplan-Meier analysis showed that Peritumoral PAR1 protein expression was associated with the overall survival (OS) (P < 0.05) of HCC patients and the time to recurrence (TTR) (P < 0.05). The 1, 3 and 5 -year overall survival time and the cumulative recurrence time in the high PAR1 protein expression group were significantly lower as compared to the low PAR1 expression group in the peritumoral liver tissue.</p><p><b>CONCLUSIONS</b>Peritumoral PAR1 expression is closely associated with the prognosis of early stage HCC patients after curable surgery. PAR1 may be involved in thrombin-mediated invasion process and may be used as a prognostic marker for HCC.</p>

A study on structure of human horizontal rectus insertion by anterior segment optical coherence tomography / 中华实验眼科杂志

Background The measurement of the extraocular muscle is critical for the diagnosis of extraocular muscle diseases,but conventional medical imaging techniques present some shortcomings because of the contact pattern.The anterior segment optical coherence tomography (OCT) is thought to be an in vivo noninvasive optical diagnostic imaging method.Objective This clinical study attempted to seek an available approach to the evaluation of the anatomic structure of human horizontal rectus insertion with Visante OCT.Methods One hundred and fourteen eyes of 58 subjects were included in this study and were divided into the low refractive power group (≤-3.00 D) with 43 eyes,moderate refractive power group(＞-3.00 D-≤-6.00 D) with 49 eyes and high refractive power group(＞-6.00 D) with 22 eyes.The horizontal rectus insertion distance to the scleral spur and its thickness were measured by Visante OCT.The correlation of the refractive power with the rectus insertion distance or thickness was analyzed.Written informed consent was obtained from each subject before medial assessment.Results The average distance from the scleral spur to the lateral and medial rectus insertion were (5.23±0.50)mm and (3.81±0.46)mm respectively.The average thickness of the lateral and medial rectus insertions were (0.39±0.06)mm and (0.39±0.06)mm respectively,showing no significant differences in comparison with those of ultrasound biomicroscopy (P=0.338,P=0.759).The lateral and medial rectus insertion distances were (5.25±0.45)mm and (3.74±0.53)mm in the low refractive power the group,(5.22±0.60)mm and (3.81±0.42)mm in the moderate group and (5.20±0.35)mm and (3.90±0.42)mm in the high refractive power group,presenting inconsiderable difference among these three groups(lateral rectus: χ2=0.054,P=0.974;medial rectus: F=0.508,P=0.604).The thickness of the lateral and medial rectus insertions were (0.41±0.06)mm and (0.40±0.06)mm in the low refractive power group,(0.40±0.07)mm and (0.37±0.07)mm in the moderate refractive power group,(0.36±0.05)mm and (0.39±0.05)mm in the high refractive power group with a significant difference among lateral rectus (F=4.922,P=0.009) but not medial rectus (F=2.152,P=0.125).The lateral rectus insertions thickness in the high refractive power group was thinner than that in low refractive power group (P＜0.05).A positive correlation was found between refractive power and the thickness of lateral or medial rectus insertions (r=0.284,P＜0.01).Conclusion Visante OCT is a uscful way in measuring the distance and thickness of the extraocular muscles.Lateral rectus insertions thickness tends to be thinner with the worsening of myopia,which is obvious in high myopia.

A clinicopathologic study of hepatic angiomyolipoma / 中华外科杂志

<p><b>OBJECTIVE</b>To investigate the clinicopathologic features, diagnosis and treatment of hepatic angiomyolipoma (HAML).</p><p><b>METHODS</b>The clinical, histopathological, treatment and prognosis data of 51 patients treated for HAML from October 1998 to October 2007 were retrospectively analyzed.</p><p><b>RESULTS</b>HAML had a female predilection (female/male = 41/10) and the mean age was 44 years old. The main symptoms were abdominal mass (33 cases) and abdominal pain or discomfort (15 cases), the other 2 cases presented as fever. Histopathologically, HAML was composed of a heterogeneous mixture of blood vessels, smooth muscle, and adipose cells. Immunohistochemical staining showed relatively high positive rate of HMB-45 (50/51), SMA (47/49) and S-100 (39/42). All 51 patients underwent partial hepatectomy. The mean hospital stay was 13.8 days and mean intraoperative blood loss was 263 ml. There was no recurrence or metastasis after a mean follow-up of 55.4 months.</p><p><b>CONCLUSIONS</b>HAML is a rare benign mesenchymal tumor of the liver. Definitive diagnosis of HAML depends on the pathohistological findings and HMB-45 positive myoid cell is an important diagnostic marker. Complete surgical resection is the optimal treatment for HAML with favorable prognosis.</p>

Identification of metastasis-related microRNAs of hepatocellular carcinoma in hepatocellular carcinoma cell lines by quantitative real time PCR / 中华肝脏病杂志

<p><b>OBJECTIVE</b>To identify the metastasis-related miRNAs in hepatocellular carcinoma (HCC) cell lines.</p><p><b>METHODS</b>A qRT-PCR method was established and optimized.</p><p><b>RESULTS</b>All candidate metastasis associated miRNAs except miR-124a were expressed in high metastasis cell line MHCC97H and low metastasis cell line MHCC97L, while some miRNAs were differentially expressed between liver cancer cell line (HepG2) and hepatic cell line (L02) (P less than 0.05), these miRNAs include: miR-148b (1.96+/-0.51 vs 3.76+/-0.28), miR-9 (-4.38+/-0.86 vs -1.10+/-0.53), miR-30c (8.41+/-0.40 vs 6.82+/-0.29), miR-338 (3.14+/-0.29 vs -2.36+/-0.32), miR-34a (0.71+/-0.40 vs -2.95+/-0.26), Let-7g (-4.07+/-0.55 vs -6.98+/-0.56). miR-148b expression was about 4 times higher than miR-148a [5.46 (IQR 4.25-6.67) vs 1.29 (IQR 0.94-1.64)] in all cell line tested (Z=-5.097, P=3x10(-7)).</p><p><b>CONCLUSION</b>This study may help to understand the biological significance of miRNAs in HCC metastasis.</p>

The expression of the early growth responsive gene-1 in acute pulmonary embolism of rats / 中国应用生理学杂志

<p><b>AIM</b>To investigate the dynamic changes of Egr-1 expression in the lungs of acute pulmonary embolism of rats by infusion of autoblood thrombs.</p><p><b>METHODS</b>The model of pulmonary embolism by infusion of autoblood thrombs in the pulmonary artery of rats was established and the mean pulmonary arterial pressure was continuously monitored by computer, and the results were evaluated by lung perfusion scan and pathological changes. Expression of Egr-1 proteinum and mRNA were measured by immunohistochemistry and reverse transcription polymerase chain reaction.</p><p><b>RESULTS</b>The mPAP of rats was increased significantly after infusion of autoblood thrombs at the half hour, and reached high level at the second hour, then remained the high level to four hours compared with group control at the same time point (P < 0.01). ECT image was showed significantly filling defect after infusion of autoblood thrombs at the first hour. The infused thromb was witnessed by hematoxylin and eosin stain. In the tracheal epithelium cells, alveolar epithelium cells and vascular smooth muscle cells of embolism rats, Egr-1 protein expression was increased significantly after embolization at the second hour compared with group control at the same time point (P<0.01), and was decreased slowly at the fourth hour. Egr-1 mRNA expression was showed the similar changes.</p><p><b>CONCLUSION</b>Expression of Egr-1 was low level in group control, but increased significantly after infusion of autoblood thromb at the second hour in the specificity of cells, suggesting that Egr-1 expression might be an important link of pathological changes in the acute pulmonary embolism.</p>

Treatment of postoperative recurrence of hepatocellular carcinoma with radiofrequency ablation comparing with repeated surgical resection / 中华外科杂志

<p><b>OBJECTIVE</b>To evaluate the efficacy of radiofrequency ablation for the treatment of postoperative recurrence of hepatocellular carcinoma and whether radiofrequency ablation can be used as first line treatment for recurrent hepatocellular carcinoma.</p><p><b>METHODS</b>There were 213 patients with small recurrent hepatocellular carcinoma (tumor size of 3 cm or less and no more than 3 nodules) who treated in Liver Cancer Institute, Fudan University from January 2000 to December 2005. Among these patients 68 were treated with radiofrequency ablation and 145 were treated with repeated surgical resection. Kaplan-Meier method was used to evaluate the overall survival or disease free survival. Log-rank used to determine the survival difference between groups and COX proportional hazard was used for multivariate analysis to evaluate the risk factors for prognosis. The overall survival or disease free survival was calculated from the time treated with radiofrequency or repeated surgical resection.</p><p><b>RESULTS</b>The 1-, 3-, 5-years overall survival rates were 94.7%, 65.1%, 37.3% and 88.1%, 62.6%, 41.0% in radiofrequency ablation group and surgical repeated resection group, respectively. There was no significant difference between two groups (P = 0.693). However, the disease free survival was better in repeated surgical resection than in radiofrequency ablation, which were 79.4%, 48.1%, 34.4% and 58.0%, 27.8%, 12.4% in repeated surgical resection and radiofrequency ablation, respectively (P = 0.001). The interval between recurrence and initial hepatectomy with more than 2 years was independent factor favor to good prognosis.</p><p><b>CONCLUSIONS</b>Radiofrequency ablation seems to be as effective as repeated surgical resection owing to comparable overall survival and can be considered as alternative therapy for surgical resection treatment of small recurrent hepatocellular carcinoma.</p>

Primary experience of the anatomical laparoscopic left lateral hepatic lobectomy procedure for benign and malignant liver tumors / 中华外科杂志

<p><b>OBJECTIVE</b>To assess the feasibility, safety and outcome of anatomical laparoscopic left lateral hepatic lobectomy for benign and malignant liver tumors.</p><p><b>METHODS</b>From April 2005 to May 2008, 11 patients (7 male, 4 female; mean age 51.7 years) underwent anatomical laparoscopic left lateral hepatic lobectomy. Four patients presented with hepatocellular carcinoma and cirrhosis, while 1 patient had metastatic liver tumors from postoperatively colon cancer, five patients had hemangioma (2 cases with gallstones underwent cholecystectomy), 1 patient had a huge symptomatic angiolipoleiomyoma. Mean tumor size was 5.8 cm (range 2.1 to 12.0 cm). All the lesions were localized in the anatomical left lateral lobe (segments II to III).</p><p><b>RESULTS</b>The mean operative time was 147 min (range 120 to 180 min). There were no intraoperative or postoperative complications, and blood transfusions were not required. The mean postoperative hospital stay was 5.9 days.</p><p><b>CONCLUSIONS</b>Anatomical laparoscopic left lateral hepatic lobectomy are feasible and safety.</p>