Yuan Liu

Sichuan University, Chengdu, Sichuan Sheng, China

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Publications (13)18.43 Total impact

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    ABSTRACT: To evaluate the efficacy and safety of combination therapy with recombinant adenovirus p53 injection (rAdp53) and transcatheter hepatic arterial chemoembolization (TACE) for advanced hepatocellular carcinoma (HCC). A total of 82 patients with advanced HCC treated only with TACE served as control group. Another 68 patients with HCC treated with TACE in combination with recombinant adenovirus-p53 injection served as p53 treatment group. Patients were followed up for 12 mo. Safety and therapeutic effects were evaluated according to the improvement in clinical symptoms, leukocyte count, Karnofsky and RECIST criteria. Survival rate was calculated with Kaplan-Meier method. The total effective rate was 58.3% for p53 treatment group, and 26.5% for control group (P < 0.05). The incidence of gastrointestinal symptoms was lower in p53 treatment group than in control group (P < 0.05). The 3-, 6- and 12-mo survival rates were significantly higher for p53 treatment group than for control group (P < 0.01). The combination treatment was well tolerated with such adverse events as fever (51.5%, P = 0.006) and pain of muscles and joints (13.2%, P = 0.003), which were significantly higher than the chemotherapy. Except for these minor adverse effects, no severe vector-related complications were identified. With respect to the efficacy, patients in p53 treatment group had less gastrointerestinal symptoms (P = 0.062), better improvement in tumor-related pain (P = 0.003), less downgrade of leukocyte counts (P = 0.003) and more upgrade of Karnofsky performance score (P = 0.029) than those in control group. The total effective rate (CR + PR) for p53 treatment group and control group was 58.3% and 26.5%, respectively, with distributions of different effect in two groups (P = 0.042). The survival rates were 89.71%, 76.13%, and 43.30% for p53 treatment group, and 68.15%, 36.98%, and 24.02% for control group, respectively, 3, 6 and 12 mo after treatment, suggesting that the survival rates are significantly higher for p53 treatment group than for control group (P = 0.0002). The rAd-p53 gene therapy in combination with TACE is a safe and effective treatment modality for advanced HCC.
    World Journal of Gastroenterology 04/2011; 17(16):2143-9. · 2.55 Impact Factor
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    ABSTRACT: In the present study, we have examined the safety and efficacy of recombinant adenovirus encoding human p53 tumor suppressor gene (rAd-p53) injection in patients with advanced non-small-cell lung cancer (NSCLC) in the combination with the therapy of bronchial arterial infusion (BAI). A total of 58 patients with advanced NSCLC were enrolled in a non-randomized, two-armed clinical trial. Of which, 19 received a combination treatment of BAI and rAd-p53 (the combo group), while the remaining 39 were treated with only BAI (the control group). Patients were followed up for 12 months, with safety and local response evaluated by the National Cancer Institute's Common Toxicity Criteria and response evaluation criteria in solid tumor (RECIST), respectively. Time to progression (TTP) and survival rates were also analyzed by Kaplan-Meier method. In the combo group, 19 patients received a total of 49 injections of rAd-p53 and 46 times of BAI, respectively, while 39 patients in the control group received a total of 113 times of BAI. The combination treatment was found to have less adverse events such as anorexia, nausea and emesis, pain, and leucopenia (P<0.05) but more arthralgia, fever, influenza-like symptom, and myalgia (P<0.05), compared with the control group. The overall response rates (complete response (CR)+partial response (PR)) were 47.3% and 38.4% for the combo group and the control group, respectively (P>0.05). Patients in the combo group had a longer TTP than those in the control group (a median 7.75 vs 5.5 months, P=0.018). However, the combination treatment did not lead to better survival, with survival rates at 3, 6, and 12 months in the combo group being 94.74%, 89.47%, and 52.63%, respectively, compared with 92.31%, 69.23%, and 38.83% in the control group (P=0.224). Our results show that the combination of rAd-p53 and BAI was well tolerated in patients with NSCLC and may have improved the quality of life and delayed the disease progression. A further study to better determine the efficacy of this combination therapy is warranted.
    Journal of Zhejiang University SCIENCE B 05/2009; 10(5):331-40. · 1.11 Impact Factor
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    ABSTRACT: Not Abstract. [Chinese FullText URL http://zhgz.chinajournal.net.cn].
    Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology 07/2008; 16(6):467-8.
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    ABSTRACT: Acute necrotizing pancreatitis complicated with pancreatic pseudoaneurysm is a rare emergency associated with high mortality that demands immediate treatment to save the patient's life. We treated a 64-year-old man who presented with a bleeding pseudoaneurysm of the superior mesenteric artery caused by acute pancreatitis, using interventional embolizing therapy. In the present report we show that interventional treatment is an effective therapeutic modality for patients with acute necrotizing pancreatitis complicated with intra-abdominal bleeding.
    World Journal of Gastroenterology 05/2008; 14(16):2612-4. · 2.55 Impact Factor
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    ABSTRACT: Summary Lung cancer is a major cause of death from malignancies in the world. Usually, the only curative treatment available is surgical resection, but only feasible in a few cases. Patients with nonresectable tumors are treated with palliative modalities, and the survival rate in patients with advanced lung cancer is still poor. We report a patient with lung squamous carcinoma who rejected surgical operation. We treated this patient by p53 gene therapy combined with bronchial artery infusion (BAI) of chemotherapeutic drugs. More than one year later, a CT scan showed complete regression of tumor lesion and the patient was in good condition.
    01/2007;
  • Yong-Song Guan, Yuan Liu
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    ABSTRACT: Hepatocellular carcinoma (HCC) is one of the most frequent primary malignant tumors in the world. Hepatic resection and liver transplantation are considered optimal for potential treatment of HCC. However, only 20% of HCCs can be surgically treated. And most of surgically-noneligible patients have to receive interventional managements including local ablation and transarterial chemoembolization (TACE). In this paper, we review the interventional treatments of HCC. A literature search of PubMed database was conducted and research articles were reviewed. Percutaneous ethanol injection (PEI) is usually applied to small HCC for a complete necrosis. Radiofrequency ablation, an alternative to PEI, also causes tumor necrosis and needs fewer times of ablation. Other methods such as acetic acid injection, laser, microwave, etc have enriched local ablation for HCC. High intensity focus ultrasound (HIFU) is thought to be promising. TACE, another common modality, can improve the survival rate of patients with HCC. The newly developed embolic agents and adjuvant rAd-p53 gene therapy are well reported. Surgically-noneligible HCC can be treated with interventional procedures. Each method has its advantages and disadvantages. However, it is still pressing to develop ablative methods as well as new embolic agents for a better prognosis of HCC.
    Hepatobiliary & pancreatic diseases international: HBPD INT 12/2006; 5(4):495-500. · 1.26 Impact Factor
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    Yong-Song Guan, Ying Hu, Yuan Liu
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    ABSTRACT: With the introduction of spiral computed tomography and the development of novel imaging technology in recent years, multidetector-row computed tomography (MDCT) has increasingly been used for the diagnosis of various lesions, especially hepatocellular carcinoma (HCC), due to its volume acquisitions, short scanning time, and especially its double-phase scanning nature, which takes advantage of the dual blood supply of liver. Multidetector-row computed tomography is used to classify HCC into several types based on the blood supply and the histological characteristics of HCC. The evaluation of HCC by MDCT provides crucial clues for the doctors to adopt correct clinical management strategies such as the selection of the appropriate dose of lipiodol before transcatheter arterial chemoembolization (TACE) and the prediction of the prognosis of HCC after TACE. The MDCT scanning allows doctors to choose the region of interest and to evaluate the blood supply according to the lipiodol uptake in order to decide whether there is recrudescence and whether a repeated therapy should be taken. This review describes MDCT, its biphasic scanning, its evaluation of blood supply in HCC and the subsequent classification of HCC, its therapeutic significance before TACE and the prognostic value after TACE.
    Journal of Gastroenterology and Hepatology 07/2006; 21(6):941-6. · 3.33 Impact Factor
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    ABSTRACT: A 23-year-old man with post-traumatic hepatic artery pseudo-aneurysm and subphrenic liver abscess was admitted. He underwent coil embolization of hepatic artery pseudo-aneurysm. The pseudo-aneurysm was successfully obstructed and subphrenic liver abscess was controlled. Super-selective trans-catheter coil embolization may represent an effective treatment for hepatic artery pseudo-aneurysm combined with subphrenic liver abscess in the absence of other therapeutic alternatives.
    World Journal of Gastroenterology 06/2006; 12(17):2798-9. · 2.55 Impact Factor
  • Yong-song Guan, Yuan Liu
    Zhonghua gan zang bing za zhi = Zhonghua ganzangbing zazhi = Chinese journal of hepatology 09/2005; 13(8):630-2.
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    ABSTRACT: Transcatheter arterial chemoembolization (TACE) has become the standard treatment for unresectable hepatocellular carcinoma (HCC). But this method has some shortages. p53 gene, which was found to be mutant in many human tumors, has been proved with broad-spectrum anti-tumor effects. We reported a 23-year-old patient with recurrent HCC after irregular hepatectomy. The p53 gene was applied to this patient. We injected percutaneously and infused transcatheterally p53 gene (Gendicine, Shenzhen Sibiono Bentech, China) into his recurrent nodules in liver respectively and 4 d later, the patient received TACE therapy. In the 2 mo follow-up, the patient was in good clinical condition with normal liver function and no recurrence was identified. The case report proposed that recurrent HCC could be successfully treated with p53 gene therapy combining TACE.
    World Journal of Gastroenterology 07/2005; 11(24):3803-5. · 2.55 Impact Factor
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    ABSTRACT: To explore the anticarcinogenic mechanism of 20(R)-ginsenoside Rg3 in induced liver tumor in SD rat. Thirty-five SD rats with induced hepatocellular carcinoma were divided into a control group and 3 dosage groups according to the dosing levels of 20(R)-ginsenoside Rg3. The tumour volume was measured by MR imaging. The apoptotic rat and S-phase fraction and diploid of tumor cell were measured with flow cytometry. Protein expression of PCNA and TNF were evaluated with immunohistochemistry. There was significant difference in tumour volume between the high dosage group and the control group. The average apoptotic rates were 11.08+/-3.78, 13.57+/-3.34, 27.35+/-16.04 and the S-phase fractions were 23.98+/-9.44, 19.73+/-6.62, 14.09+/-3.48 in the low-, medium-, and high-dosage groups respectively. The apoptotic rate was significantly higher in the high-dosage group than in the medium-dosage group and low-dosage group. Before-after comparison showed that the anti-proliferative effects of 20(R)-ginsenoside Rg3 were significant in three treatment groups. The higher positive rats of protein expression with PCNA and TNF were significant difference in the high-dosage group compared to those in the low-dosage group. No significant difference between the medium-dosage group and the low-dosage group. 20(R)-ginsenoside Rg3 can noticeably inhibit the proliferation of tumor cells, and efficaciously induce the apoptosis and facilitate necrosis of the tumor cells, and there appears to be a dose dependent effect.
    Sichuan da xue xue bao. Yi xue ban = Journal of Sichuan University. Medical science edition 04/2005; 36(2):217-20.
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    ABSTRACT: The purpose of this study was to compare the diagnostic accuracy of biphasic multi-detector row helical computed tomography (MDCT), digital subtraction angiography (DSA) and Lipiodol computed tomography (CT) in detection of hypervascular hepatocellular carcinoma (HCC). Twenty-eight patients with nodular HCC underwent biphasic MDCT examination: hepatic arterial phase (HAP) 25 s and portal venous phase (PVP) 70 s after injection of the contrast medium (1.5 mL/kg). They also underwent hepatic angiography and intra-arterial infusion of iodized oil. Lipiodol CT was performed 3-4 wk after infusion. MDCT images were compared with DSA and Lipiodol CT images for detection of hepatic nodules. The three imaging techniques had the same sensitivity in detecting nodules >20 mm in diameter. There was no significant difference in the sensitivity among HAP-MDCT, Lipiodol CT and DSA for nodules of 10-20 mm in diameter. For the nodules <10 mm in diameter, HAP-MDCT identified 47, Lipiodol CT detected 27 (chi2 = 11.3, P = 0.005<0.01, HAP-MDCT vs Lipiodol CT) and DSA detected 16 (chi2 = 9.09, P = 0.005<0.01 vs Lipiodol CT and chi2 = 29.03, P = 0.005<0.01vs HAP-MDCT). However, six nodules <10 mm in diameter were detected only by Lipiodol CT. MDCT and Lipiodol CT are two complementary modalities. At present, MDCT does not obviate the need for DSA and subsequent Lipiodol CT as a preoperative examination for HCC.
    World Journal of Gastroenterology 01/2005; 11(2):200-3. · 2.55 Impact Factor
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    ABSTRACT: When acute upper gastrointestinal bleeding (UGIB) occurs in patients, especially seriously, an urgent effective management should be taken as soon as possible. But above all, a thorough diagnostic evaluation should be undertaken immediately and differential diagnoses for UGIB should be established because a different cause of the upper gastrointestinal hemorrhage makes one choose a different approach. There are several therapeutic methods we have used clinically today, but as an effective diagnostic method and treatment, the interventional approach might result in an obvious effect which could be observed before long. Successes in occlusion of the bleeding artery have led us to consider using this technique for patients with such UGIB.