Surgical treatment for severe distortion of the internal carotid artery / 中华神经医学杂志

Objective To evaluate and summarize the possibility and experience of reconstructive vascular operation for V-shaped kinking of internal carotid artery.Methods Reconstructive vascular operation was performed in 11 patients with symptomatic V-shaped kinking of internal carotid artery,admitted to our hospitals from July 2008 to May 2010; 7 of them underwent eversion endarterectomy simultaneously.Results One patient with severe distortion appeared mild agitation,insomnia and headache 3-5 d after the operation,but 1 week later,the system disappeared completely.CTA right after the operation showed that the distortion vascular was straight with good vascular patency.All patients rechecked MR diffusion weighted imaging 1 week after the operation,showing that 2 patients had fresh lacunar infarction in the operation side.Carotid ultrasonography showed no restenosis recurrence,distortion or hemodynamic disorders 3 and 6 months after the operation.1patient rechecked CT brain perfusion imaging 6 months after the operation,showing obviously improved perfusion.Follow up for 6 months reviewed no other new infarction lesions,no obvious nervous signs or symptoms appeared; no one reappeared TIA or had operative complications.Obvious improvement of spirit and reaction was noted in a patient with slow response.Conclusion Reconstructive vascular operation is an effective surgical approach in kinking and coiling of the internal carotid artery.

Inhibitory effect of human umbilical cord-derived mesenchymal stem cells on interleukin-17 production in peripheral blood T cells from spondyloarthritis patients / 中国实验血液学杂志

In this study, the inhibitory effect of human umbilical cord-derived mesenchymal stem cells (hUCMSC) on interleukin-17 (IL-17) production in peripheral blood T cells from patients with spondyloarthritis (SpA) were investigated, in order to explore the therapeutic potential of hUCMSC in the SpA. Peripheral blood mononuclear cells (PBMNC) were isolated from patients with SpA (n = 12) and healthy subjects (n = 6). PBMNC were cultured in vitro with hUCMSC or alone. The expression of IL-17 in CD4(+) T cells or γ/δ T cells were determined in each subject group by flow cytometry. IL-17 concentrations in PBMNC culture supernatants were measured by ELISA. The results indicated that the proportion of IL-17-producing CD4(+) T cells and IL-17-producing γ/δ T cells of SpA patients were 4.5 folds and 5 folds of healthy controls [CD3(+)CD4(+)IL-17(+) cells (3.42 ± 0.82)% vs (0.75 ± 0.25)%, P < 0.01; CD3(+)γδTCR(+)IL-17(+) cells (0.30 ± 0.10)% vs (0.06 ± 0.02)%, P < 0.01]. After co-culture of PBMNC in patients with hUCMSC, the increased proportions of CD3(+)CD4(+)IL-17(+) cells and CD3(+)γδTCR(+)IL-17(+) cells in SpA patients were inhibited significantly by hUCMSC [CD3(+)CD4(+)IL-17(+) cells (3.42 ± 0.82)% vs (1.81 ± 0.59)% (P < 0.01); CD3(+)γδTCR(+)IL-17(+) cells (0.30 ± 0.10)% vs (0.16 ± 0.06)% (P < 0.01]. In response to phytohemagglutinin (PHA, 1 µg/ml), PBMNC from SpA patients secreted more IL-17 than that from healthy control [(573.95 ± 171.68) pg/ml vs (115.53 ± 40.41) pg/ml (P < 0.01)]. In the presence of hUCMSC, PBMNC of SpA patients produced less amount of IL-17 [(573.95 ± 171.68) pg/ml vs (443.20 ± 147.94) pg/ml, (P < 0.01)]. It is concluded that the IL-17 production in peripheral blood T cells from SpA patients can be inhibited by hUCMSC, which have therapeutic potential for SpA.

Diagnostic value of MRI in testicular tumor / 中华男科学杂志

<p><b>OBJECTIVE</b>To study the MRI manifestation of testicular tumor and the value of MRI in the diagnosis of the disease.</p><p><b>METHODS</b>We retrospectively analyzed 23 cases of pathologically confirmed testicular tumor, and observed the morphological characteristics, signals and surrounding conditions of the tumor using plain and enhanced MRI scanning.</p><p><b>RESULTS</b>Of the 23 cases, seminoma was identified in 7, mixed germinoma in 3, teratoma in 3, endodermal sinus tumor in 2, epidermoid in 1, Leydig cell tumor in 1, leucoma in 1, nonspecific inflammatory mass in 3, and tuberculosis in 2. MRI revealed the precise locations and specific characteristics of</p><p><b>CONCLUSION</b>Based on MRI findings and clinical manifestation, most testicular tumors can be diagnosed correctly.</p>

Standard carotid endarterectomy with Hema carotid dacron patch angioplasty / 中华神经医学杂志

Objective To explore the efficacy of standard carotid endarterectomy (sCEA) with Hema carotid dacron patch angioplasty on formation of carotid. Methods The data of 47 patients with carotid atherosclerotic stenosis, admitted to our hospital from January 2006 to October 2009 were analyzed retrospectively. Unilateral sCEA with Hema carotid dacron patch angioplasty was performed in 25 patients (diameter of internal carotid＜5 mm) and sCEA alone in 22. Preoperative and postoperative complications and the efficacy were summarized. Results No perioperative stroke/death was noted;but transient ischemic attack appeared in 1 patient and the symptom was relieved after treatment. Two years of follow-up was performed; no patients in the sCEA with Hema carotid dacron patch angioplasty group was found to have carotid arterial restenosis, while 2 was noted in the sCEA group. Conclusion The sCEA with Hema carotid dacron patch angioplasty is an effective method in preventing the carotid arterial restenosis in patients with carotid atherosclerotic stenosis that enjoy their conventional diameter of internal carotid＜5 mm.

Value of magnetic resonance imaging in displaying the parotid gland segments of the facial nerve / 南方医科大学学报

<p><b>OBJECTIVE</b>To evaluate the value of magnetic resonance imaging (MRI) in displaying the parotid gland segments of the facial nerve.</p><p><b>METHODS</b>Sixteen volunteers (9 males and 7 females) and 132 surgically confirmed patients with parotid tumors locating in the deep or shallow lobe of the parotid gland (including 89 with benign and 43 with malignant tumors) underwent MRI using T1WI and T2WI. The transverse images were obtained with the plane tilted 35 degrees to the foot, and the coronal images were acquired using conventional scanning.</p><p><b>RESULTS</b>On transverse T1WI, the parotid gland segments of the facial nerve displayed low signal with arc-shaped curve in the cross-section, showing a symmetrical dot-like low signal in the coronal plane. The facial nerve in 63% of the patients with parotid tumors in the cross-section could be displayed, but in the coronal plane the proportion reached 83%. MRI could accurately reveal the position of the parotid tumors in the deep or shallow lobe of the parotid gland.</p><p><b>CONCLUSION</b>MRI can show the major portion of the parotid gland segments of the facial nerve and has important value in locating the parotid tumors and displaying the relationship between the tumor and facial nerve.</p>

Magnetic resonance imaging for diagnosis of parotid malignant tumors and the pathological basis / 南方医科大学学报

<p><b>OBJECTIVE</b>To investigate magnetic resonance imaging (MRI) features of parotid malignant tumors and study their pathological basis.</p><p><b>METHODS</b>Forty-seven patients with parotid malignant tumors confirmed by surgery (41 patients) or biopsy (6 patients) were enrolled in this study. A comparative analysis was conducted of the pathological and MRI findings in 30 patients with the entire lesions available. Each of the MRI features was analyzed retrospectively and the typical MRI findings of common parotid malignant tumors were summarized.</p><p><b>RESULTS</b>MRI allowed accurate diagnosis of parotid malignant tumors. Four patients with low-grade mucoepidermoid carcinoma showed well-defined tumor margin and were difficult to distinguish from benign tumors. Six patients with high-grade mucoepidermoid carcinoma had obscure margin of the tumor which easily underwent necrosis with liable lymph node involvement. The 8 cases of adenoid cystic carcinoma was characterized by extensive invasion surrounding the parotid gland. Most of 8 cases of malignant pleomorphic adenoma still showed high and heterogeneous signal on T2WI, with irregular shape and poorly defined margin. Nine cases of lymphoma all had secondary lesions characterized by extensive involvement and presence of multiple nodules. The 4 cases of acinic cell carcinoma showed either regular or irregular tumor morphology, presenting with high signal intensity on T1WI and T(2)WI.</p><p><b>CONCLUSION</b>MRI is an important modality for the diagnosis of parotid malignant tumors. Most of the common parotid malignant tumors have characteristic MRI and pathological features, which make possible their differential diagnosis.</p>