PubMed | Mackay Memorial Hospital Taipei, National Taiwan University and National Yang Ming University
Type: Journal Article | Journal: American journal of translational research | Year: 2015
Cisplatin (CDDP) is employed to enhance radiotherapys (RT) effect for various cancers. However, the effects of local RT on chemotherapeutics in the plasma and lymphatic system remain unclear. Here, we evaluated the influence of pelvic irradiation on the pharmacokinetics (PK) of CDDP using rats as an experimental model.RT with 2 Gy and 0.5 Gy were delivered to the whole pelvis of Sprague-Dawley rats. CDDP at 5 mg/kg and 10 mg/kg was intravenously infused 24 hours after radiation for the plasma and lymphatic system, respectively. The pharmacokinetics of CDDP in the plasma and lymphatic system were calculated.Compared with sham-irradiated controls, the whole pelvic irradiation increased the area under the concentration versus time curve (AUC) of CDDP (5 mg/kg) in the plasma by 80% at 0.5 Gy and 87% at 2 Gy, respectively. In contrast, the AUC of CDDP decreased in bile by 13% at both dose levels. Intriguingly, RT could also increase the AUC of CDDP (10 mg/kg) in the lymphatic fluid by 87% at 2 Gy. In addition, the AUC in CDDP without and with RT was 2.8-fold and 3.4-fold greater for the lymph system than for the plasma, respectively.A local pelvic RT could modulate the systemic PK of CDDP in both the plasma and lymphatic fluids of the rats. The RT-PK phenomena are worth further investigation.
Lee A.Y.-L.,National Health Research Institute |
Fan C.-C.,Mackay Memorial Hospital Taipei |
Fan C.-C.,Yuanpei University |
Chen Y.-A.,Yuanpei University |
And 4 more authors.
Integrative Cancer Therapies | Year: 2015
Hypotheses. Epithelial-mesenchymal transition (EMT) and invasion play a critical role in cancer progression and metastasis. We have shown that low E-cadherin and high Twist expression are significantly correlated with prognostic survival prediction in oral squamous cell carcinoma (OSCC). This study aimed to determine the anti-invasive effect of curcumin on the expression of matrix metalloproteinases (MMPs) and of EMT regulators in OSCC. Methods. SCC-25 cells were treated with curcumin, and cell proliferation, invasion, and expression of MMPs and EMT regulators were assessed for cell viability by trypan blue exclusion, for invasion by Matrigel invasion chamber, and for EMT regulators and MMP changes in the levels of proteins by immunoblotting. Results. Our data showed that curcumin treatment not only decreased the expression of MMP-2 and MMP-9 to inhibit invasiveness in oral cancer but also modulated the expression of EMT markers, such as Snail, Twist, and E-cadherin, and induced p53 expression that is crucial to EMT repression. Conclusion. Curcumin has the potential to become an adjunctive regimen for the prevention of cancer progression and metastasis in oral cancer. © SAGE Publications.
Huang L.-C.,Mackay Memorial Hospital |
Chang J.-H.,Mackay Memorial Hospital Taipei |
Wang N.-L.,Mackay Memorial Hospital Taipei
Pediatrics and Neonatology | Year: 2012
Congenital central hypoventilation syndrome (CCHS) is a rare condition. The main characteristic is respiratory insufficiency during sleep. Patients who have CCHS need varying degrees of ventilation support during sleep, or even all day long, according to its severity. We report a term baby with repeated extubation failure, CCHS and Hirschsprung's disease diagnosed at 1 month of age. This patient was discharged at 5 months old with a home ventilator and reached normal developmental milestones. © 2012, Taiwan Pediatric Association. Published by Elsevier Taiwan LLC. All rights reserved.
PubMed | MacKay Memorial Hospital Taipei
Type: Journal Article | Journal: Respirology case reports | Year: 2015
Agenesis of the right upper lobe of the lung is a very uncommon congenital anomaly and may be referred to chest clinics in adulthood for an incidental finding of abnormal chest radiograph. The presentations of chest radiograph may imitate many common situations such as right upper lobe collapse presenting as an ipsilateral shifting of the mediastinum or elevation of the right hemidiaphragm due to eventration or subdiaphragmatic lesions. A chest computed tomography is considered the most conclusive examination used to diagnose lung agenesis. Three-dimensional reconstructed images can be particularly helpful in delineating abnormalities of the bronchi and associated arterial and venous structures. We describe here a young woman with allergic rhinitis and bronchial asthma since her early childhood. She was referred to our clinic for an incidental finding of abnormal chest radiograph after a school health checkup. Right upper lobe atelectasis or intra-abdominal lesions were initially suspected. After a thorough image study, she was diagnosed as a case of agenesis of the right upper lobe. Our report emphasizes the importance that a high index of suspicion and adequate image investigation are necessary to diagnose congenital lung anomalies.