Analysis and management of delayed cerebrospinal fluid rhinorrhea after invasive pituitary adenoma surgery / 中华耳鼻咽喉头颈外科杂志

Objective: To investigate the related factors and treatments of delayed cerebrospinal fluid rhinorrhea (CFR) after invasive pituitary adenoma (IPA) surgery. Methods: One hundred and forty-two patients with IPA treated in Tianjin Huanhu Hospital from January 2014 to January 2019 were analyzed retrospectively, including 62 males and 80 females, aging from 38 to 67 years. The clinical data of patients before and after operation were collected. All patients with postoperative CFR underwent endoscopic CFR repair. During the operation, residual or recurrent pituitary adenomas were resected, the dura around the leak was enlarged and the necrotic tissue was removed. For those who still had fluid leakage after repair, the necrotic tissue was cleaned up, the leakage was filled and reinforced under endoscopy. Endoscopic rhinorrhea repair was performed if necessary. The cerebrospinal fluid leak was repaired with multi-layer materials. The related risk factors of delayed CFR after operation were analyzed. SPSS 19.0 software was used for statistical analysis. Results: Among the 142 patients in this group, 64 cases underwent total tumor resection and 78 cases underwent non-total tumor resection. They were followed up for 6 to 72 months. Thirty-one cases had delayed CFR, with an incidence of 21.83%, and occurred between 1 and 5 years postoperatively, with an average of 2.4 years. All 31 patients with delayed CFR underwent endoscopic CFR repair. The nasal endoscopy was rechecked at 2 weeks, 1 month, 3 months and 6 months after operation. Twenty-eight patients were repaired successfully after 1 operation, while 2 patients after 2 operations and 1 patient after 3 operations. These patients were followed up for 6 to 60 months, and no CFR occurred again. Univariate analysis showed that the degree of tumor resection, recurrence, size, texture, postoperative radiotherapy and operator experience were the risk factors of delayed CFR (all P<0.05). Multivariate analysis showed that the degree of tumor resection and recurrence were the highest independent risk factors for postoperative CFR, and tumor size, texture, postoperative radiotherapy and operator experience were the independent risk factors in this study. Conclusions: Delayed CFR after IPA is related to the degree of tumor resection, recurrence, size, texture, postoperative radiotherapy and the operator experience. It is necessary to completely remove the tumor under endoscope, to expand resection of the dura and necrotic tissue around the leak, to repair the defect with multi-layer materials, to follow-up closely and to repair timely after operation.

Transcutaneous Auricular Vagus Nerve Stimulation: From Concept to Application / 神经科学通报·英文版

Whether in the West or the East, the connection between the ear and the rest of the body has been explored for a long time. Especially in the past century or more, the relevant theoretical and applied research on the ear has greatly promoted the development of ear therapy, and finally the concept of transcutaneous auricular vagus nerve stimulation (taVNS) has been proposed. The purpose of taVNS is to treat a disease non-invasively by applying electrical current to the cutaneous receptive field formed by the auricular branch of the vagus nerve in the outer ear. In the past two decades, taVNS has been a topic of basic, clinical, and transformation research. It has been applied as an alternative to drug treatment for a variety of diseases. Based on the rapid understanding of the application of taVNS to human health and disease, some limitations in the development of this field have also been gradually exposed. Here, we comprehensively review the origin and research status of the field.

Effect analysis on endoscopic transnasal resection of epidural cholesteatoma at paracentral skull base / 中华耳鼻咽喉头颈外科杂志

Objective: To indicate the clinical features of endoscopic transnasal resection of epidural cholesteatoma at paracentral skull base and to analyze its efficacy. Methods: The total excision rate, postoperative complications and postoperative curative effect of 7 patients (4 males and 3 females, aging from 32 to 63 years old) who underwent middle skull base surgery for epidural cholesteatoma resection under transnasal endoscope at Tianjin Huanhu Hospital between August 2017 and August 2020 were retrospectively reviewed. All patients were followed up for 6 to 36 months. The postoperative MRI, clinical symptoms and recurrence were reviewed. Descriptive statistical methods were used for analysis. Results: Among the 7 patients, there were total resection (complete resection of cyst contents and capsule) in 4 patients, near-total resection (complete resection of cyst contents, incomplete resection of cyst capsule) in 1 patient, and subtotal resection (incomplete resection of cyst contents and capsule) in 2 patients. The clinical symptoms of all patients were improved postoperatively with 1 patient who had no clinical symptoms. One case had postoperative cerebrospinal fluid rhinorrhea, which was cured after lumbar drainage and nasal iodoform gauge packing. Up to now, 7 patients (including patients with partial resection) had no recurrence. Conclusion: Endoscopic transnasal approaches may be effectively used for resection of epidural cholesteatoma in the paracentral skull base in carefully selected cases.

Analysis on endoscopic endonasal approach combined with the frontotemporal orbitozygomatic approach under the microscope for skull base tumor with intra and extra-cranial involvement / 中华耳鼻咽喉头颈外科杂志

Objective: To evaluate the application of combination use of endoscopic endonasal approach combined with the frontotemporal orbitozygomatic approach microscopically in skull base tumor with intra and extra-cranial involvement. Methods: A total of 7 patients (4 males and 3 females, aging from 27 to 65 years old, with a medium age of 48) undergone complicated skull base surgeries via endoscopic endonasal approach combined with the frontotemporal orbitozygomatic approach microscopically from May 2016 to January 2018 were reviewed respectively. The patients included 2 cases of recurrent invasive pituitary adenoma, 3 cases of basal skull meningiomas, 1 case of clivus chondrosarcoma, and 1 case of recurrent nasopharyngeal carcinoma. The lesion extensively infiltrated nasal cavity, extending to the paranasal sinus, bilateral cavernous sinus, sellar region, suprasellar, superior clivus, temporal lobe, pterygopalatine fossa, infratemporal fossa and important intracranial vessels. All the 7 patients were treated under general anesthesia by endoscopic endonasal approach combined with frontotemporal orbitozygomatic approach under the microscope. Total excision rate, intraoperative and postoperative complications and postoperative curative effect were observed. All of them were followed up for 6 to 12 months. The Glasgow Outcome Scale (GOS) was used to evaluate the prognosis. Result: Total tumor removal was performed in 5 cases, subtotal removel in 2 cases. There was no complication during the operation. Postoperative severe complications occurred in 2 cases, including 1 case of cerebrospinal fluid rhinorrhea and intracranial infection, which was cured by lumbar cistern drainage and intrathecal injection; 1 case occurred oculomotor nerve paralysis, which recovered during follow-up. Postoperative complications occurred in 1 case of trochlear nerve dysfunction, 2 cases of facial numbness, and 1 case of tinnitus. During follow-up, all patients recovered to varying degrees. There was no bleeding and death after the operation. No tumor recurred during the follow-up period. All patients were recovered well with GOS grade Ⅳ-Ⅴ. Conclusions: Endoscopic transnasal approach combined with microscopic frontotemporal orbitozygomatic approach can remove tumors in one stage, reduce surgical complications and improve surgical effect. It has good application prospects and is suitable for excising complex intracranial and extracranial communicating tumors of widely involving sellar, clivus and petrous apex area.

Inhibiting effect of Endostar combined with ginsenoside Rg3 on breast cancer tumor growth in tumor-bearing mice

Objective: To study the inhibiting effect of Endostar combined with ginsenoside Rg3 on breast cancer tumor growth in tumor-bearing mice. Methods: Female mice were selected as experimental animals, and breast cancer tumor-bearing mouse models were established and then divided into groups A, B, C and D that respectively received saline, recombinant human endostatin, ginsenosides Rg3 and recombinant human endostatin combined with Rg3 intervention; 7 d, 14 d and 21 d after intervention, tumor tissue volume was measured; 21 d after intervention, mice were killed, tumor tissue was collected, and mRNA contents of angiogenesis molecules, invasion molecules, autophagy marker molecules and autophagy signaling pathway molecules were detected. Results: At 7 d, 14 d and 21 d after intervention, tumor tissue volume of groups B, C and D was lower than that of group A, and tumor tissue volume of group D was lower than that of groups B and C; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of groups B, C and D were significantly lower than those of group A, and LC3-II/LC3-I was significantly higher than that of group A; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of group D were significantly lower than those of groups B and C, and LC3-II/LC3-I was higher than that of groups B and C. Conclusions: Endostar combined with ginsenoside Rg3 has stronger inhibiting effect on breast cancer tumor growth in tumor-bearing mice than single drug, and it can inhibit angiogenesis and cell invasion, and enhance cell autophagy.

Effect of hGC-MSCs from human gastric cancer tissue on cell proliferation, invasion and epithelial-mesenchymal transition in tumor tissue of gastric cancer tumor-bearing mice

Objective To study the effect of hGC-MSCs from human gastric cancer tissue on cell proliferation, invasion and epithelial-mesenchymal transition in tumor tissue of gastric cancer tumor-bearing mice. Methods BABL/c nude mice were selected as experimental animals and gastric cancer tumor-bearing mice model were established by subcutaneous injection of gastric cancer cells, randomly divided into different intervention groups. hGC-MSCs group were given different amounts of gastric cancer cells for subcutaneous injection, PBS group was given equal volume of PBS for subcutaneous injection. Then tumor tissue volume were determined, tumor-bearing mice were killed and tumor tissues were collected, mRNA expression of proliferation, invasion, EMT-related molecules were determined. Results 4, 8, 12, 16, 20 d after intervention, tumor tissue volume of hGC-MSCs group were significantly higher than those of PBS group and the more the number of hGC-MSCs, the higher the tumor tissue volume; mRNA contents of Ki-67, PCNA, Bcl-2, MMP-2, MMP-7, MMP-9, MMP-14, N-cadherin, vimentin, Snail and Twist in tumor tissue of hGC-MSCs group were higher than those of PBS group, and mRNA contents of Bax, TIMP1, TIMP2 and E-cadherin were lower than those of PBS group. Conclusion hGC-MSCs from human gastric cancer tissue can promote the tumor growth in gastric cancer tumor-bearing mice, and the molecular mechanism includes promoting cell proliferation, invasion and epithelial-mesenchymal transition.

Association of Insulin Resistance and β Cell Function with Lipid Metabolism in Middle-aged and Elderly Hui and Han Populations / 中国医学科学院学报

<p><b>OBJECTIVE</b>To explore the association of insulin resistance and β cell function with lipid metabolism in middle-aged and elderly Hui and Han populations.</p><p><b>METHODS</b>A total of 1000 subjects age over 40 years were recruited from five urban communities in Yinchuan and Wuzhong cities of Ningxia. The composition ratio between Hui and Han nationality was 1:2. A questionnaire-based survey was performed. Physical examinations were carried out to measure the height, body mass, waistline, and hipline. The levels of triglyceride (TG), total cholesterol (TC), blood uric acid (BUA), fasting blood glucose and insulin were measured. The boby mass index (BMI), waist-hip ratio (WHR), and secretion related index including insulin resistance index (IR), insulin sensitivity index (IAI), and beta cell function index (HBCI) were calculated.</p><p><b>RESULTS</b>The BMI, WHR, IAI, HBCI, and the prevalence rate of diabetes in Hui nationality were significantly higher than those in Han nationality (P<0.01). The levels of BUA, fasting blood glucose, TC, and IR in Han nationality were significantly lower than those in Hui nationality (P<0.01). In Hui populations, TG, BMI, WHR, and BUA were positively correlated with IR (r=0.234, r=0.193, r=0.143, and r=0.129, respectively; P<0.01) and were negatively correlated with IAI (r=-0.234, r=-0.193, r=-0.143, r=-0.129, respectively; P<0.01), whereas TC was negatively correlated with HBCI (r=-0.169, P<0.01). In Han populations, TC, TG, BMI, WHR, and BUA were positively correlated with IR (r=0.140, r=0.257, r=0.288, r=0.163, r=0.104, P<0.01) and negatively correlated with IAI (r=-0.140, r=-0.257, r=-0.288, r=-0.163, and r=-0.104, P<0.01), whereas BMI was negatively correlated with HBCI (r=-0.111, P<0.01). After the influential factors such as gender, nationality, and age were adjusted, the TC, TG, BMI, WHR, BUA levels were positively correlated with IR (r=0.109, r=0.256, r=0.253, r=0.139, and r=0.142, P<0.01) and negatively correlated with IAI (r=-0.109, r=-0.256, r=-0.253, r=-0.139, and r=-0.142, P<0.01). TC and BMI were negatively correlated with HBCI (r=-0.113, r=-0.086, P<0.01). TG and BMI were independently associated with IR and IAI (r=0.218, r=0.182, r=-0.218, r=-0.182), while TC and BMI were independently associated with HBCI (r=-0.113, r=-0.086).</p><p><b>CONCLUSIONS</b>The distributions of TC, TG, BMI, WHR, BUA, IR, IAI, and HBCI differ between Han and Hui populations. The development of insulin resistance is closely related with the increased levels of TC, TG, BMI, WHR, and BUA. However, the HBCI increases with the increased level of TC and BMI. TG and BMI may be related with insulin resistance. Also, TC and BMI may affect the secretion function of β cells.</p>

Inhibiting effect of Endostar combined with ginsenoside Rg3 on breast cancer tumor growth in tumor-bearing mice

OBJECTIVE@#To study the inhibiting effect of Endostar combined with ginsenoside Rg3 on breast cancer tumor growth in tumor-bearing mice.@*METHODS@#Female mice were selected as experimental animals, and breast cancer tumor-bearing mouse models were established and then divided into groups A, B, C and D that respectively received saline, recombinant human endostatin, ginsenosides Rg3 and recombinant human endostatin combined with Rg3 intervention; 7 d, 14 d and 21 d after intervention, tumor tissue volume was measured; 21 d after intervention, mice were killed, tumor tissue was collected, and mRNA contents of angiogenesis molecules, invasion molecules, autophagy marker molecules and autophagy signaling pathway molecules were detected.@*RESULTS@#At 7 d, 14 d and 21 d after intervention, tumor tissue volume of groups B, C and D was lower than that of group A, and tumor tissue volume of group D was lower than that of groups B and C; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of groups B, C and D were significantly lower than those of group A, and LC3-II/LC3-I was significantly higher than that of group A; mRNA contents of VEGFA, VEGFB, VEGFC, MMP2, MMP9, p62, mTOR, PI3K, Akt, JNK and Beclin-1 in tumor tissue of group D were significantly lower than those of groups B and C, and LC3-II/LC3-I was higher than that of groups B and C.@*CONCLUSIONS@#Endostar combined with ginsenoside Rg3 has stronger inhibiting effect on breast cancer tumor growth in tumor-bearing mice than single drug, and it can inhibit angiogenesis and cell invasion, and enhance cell autophagy.

Effect of hGC-MSCs from human gastric cancer tissue on cell proliferation, invasion and epithelial-mesenchymal transition in tumor tissue of gastric cancer tumor-bearing mice

OBJECTIVE@#To study the effect of hGC-MSCs from human gastric cancer tissue on cell proliferation, invasion and epithelial-mesenchymal transition in tumor tissue of gastric cancer tumor-bearing mice.@*METHODS@#BABL/c nude mice were selected as experimental animals and gastric cancer tumor-bearing mice model were established by subcutaneous injection of gastric cancer cells, randomly divided into different intervention groups. hGC-MSCs group were given different amounts of gastric cancer cells for subcutaneous injection, PBS group was given equal volume of PBS for subcutaneous injection. Then tumor tissue volume were determined, tumor-bearing mice were killed and tumor tissues were collected, mRNA expression of proliferation, invasion, EMT-related molecules were determined.@*RESULTS@#4, 8, 12, 16, 20 d after intervention, tumor tissue volume of hGC-MSCs group were significantly higher than those of PBS group and the more the number of hGC-MSCs, the higher the tumor tissue volume; mRNA contents of Ki-67, PCNA, Bcl-2, MMP-2, MMP-7, MMP-9, MMP-14, N-cadherin, vimentin, Snail and Twist in tumor tissue of hGC-MSCs group were higher than those of PBS group, and mRNA contents of Bax, TIMP1, TIMP2 and E-cadherin were lower than those of PBS group.@*CONCLUSION@#hGC-MSCs from human gastric cancer tissue can promote the tumor growth in gastric cancer tumor-bearing mice, and the molecular mechanism includes promoting cell proliferation, invasion and epithelial-mesenchymal transition.

Olfactory function in patients with idiopathic rapid eye movement sleep behavior disorder / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To analyze the correlation between olfactory bulb (OB) volume with depth of olfactory sulcus (OS) and olfactory function in patients with idiopathic rapid eye movement sleep behavior disorder (iRBD).</p><p><b>METHODS</b>Fifty patients with iRBD and fifty controls were assessed with polysomnography (PSG). The results of olfactory function T & T testing, OB volume and depth of OS assessed with magnetic resonance imaging (MRI) were compared. SPSS 11.0 software was used to analyze the data.</p><p><b>RESULTS</b>T & T olfactory testing revealed that iRBD patients had higher scores (3.1 ± 0.5) than those in controls (0.6 ± 0.1), and the difference was significant (t = 7.913, P < 0.05). Both men and women with iRBD were affected by the same extent of olfactory loss (t = 1.015, P > 0.05). OB volume of left side in iRBD patients was (33.75 ± 4.11) mm(3), right side was (34.57 ± 4.21) mm(3), average OB volume was (33.94 ± 4.15) mm(3); OB volume of left side in controls was (51.68 ± 7.71) mm(3), right side was (52.31 ± 7.77) mm(3), average OB volume was (51.94 ± 7.74) mm(3); OB volume were lower in iRBD patients as compared to controls (t value were 9.013, 8.889 and 8.923, all P < 0.01). OS depth study revealed no statistical difference between iRBD patients and controls (t value were 0.923, 0.897 and 0.904, all P > 0.05). Olfactory discriminate threshold was negatively correlated with OB volume in iRBD patients (r = -0.61, P < 0.05), but no correlated with depth of OS (r = -0.24, P > 0.05).</p><p><b>CONCLUSIONS</b>The OB volume was lower in iRBD patients as compared to controls. The depth of OS showed no significant changes in iRBD patients. The OB volume was correlated with olfactory function, while the depth of OS was no correlated with olfactory function.</p>

Transsphenoidal endoscopic endonasal approach for the resection of Rathke cleft cysts / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To evaluate the effectiveness of transsphenoidal endoscopic endonasal approach for the resection of Rathke cleft cysts (RCC).</p><p><b>METHODS</b>Thirty-five pathologically diagnosed RCCs were resected throuth transsphenoidal endoscopic endonasal approach at the HuanHu hospital between January 2000 and December 2011. The clinical data were retrospectively analysed. There were 12 male and 23 female. The average age was 45.7 years and the average disease course was 4.6 years. The typical clinical manifestations included headache (26 cases), visual interference (11 cases) and pituitary dysfunction (8 cases). The postoperative symptoms and follow-up results were recorded.</p><p><b>RESULTS</b>All of the patients underwent complete removal of the cyst contents, complete removal of the cyst wall in 20, fenestration and aspiration of the RCC with partial excision of the cyst wall in 15. The mean cyst volume was (1145.3 ± 12.1) mm(3) [range (121 - 4586) mm(3)]. One patient had cerebrospinal fluid leak, which was repaired using artificial dura mate of brain and gelatin sponge intraoperatively. No postoperative complications were found. Follow-up time ranged from half a year to 11 years. Headache resolved in 100% (26/26), visual interference resolved in 90.9% (10/11), pituitary dysfunction resolved in 62.5% (5/8). No patient recurred.</p><p><b>CONCLUSION</b>It is concluded that the transsphenoidal endoscopic endonasal approach is microinvasive, safe and effective in the treatment of RCC.</p>

Olfactory bulb volume and depth of olfactory sulcus in patients with idiopathic olfactory loss / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To analyze the correlation between olfactory bulb(OB) volume with depth of olfactory sulcus (OS) and olfactory function in patients with idiopathic olfactory loss (IOL).</p><p><b>METHODS</b>Forty patients with IOL and forty normal controls were compared in terms of olfactory function T&T testing and magnetic resonance imaging (MRI, observation of OB volume and depth of OS). T&T testing and MRI were performed again after a year in 40 IOL patients, the results were compared with the first time.</p><p><b>RESULTS</b>OB volume of left side in IOL patients was (30.31 ± 4.07) mm(3), right side was (30.82 ± 4.14) mm(3), average OB volume was (30.53 ± 4.10) mm(3); OB volume of left side in normal controls was (49.56 ± 7.19) mm(3), right side was (49.84 ± 7.25) mm(3), average OB volume was (49.73 ± 7.21) mm(3). OB volume was lower in IOL patients as compared to controls (t value were 8.122, 8.274, 8.231, all P < 0.01). OS depth study revealed no statistical different between IOL patients and controls (t value were 0.998, 1.017, 1.001, all P > 0.05). Olfactory discriminate threshold was negatively correlated with OB volume in IOL patients (r = -0.53, P < 0.05). There was no correlation with the depth of OS (r = -0.19, P > 0.05). Among 40 IOL patients, when followed-up, 12 showed increased in OB volume and olfactory function after a year, but no statistical difference was found with the first time (t value were 0.831, 0.864, 0.826, all P > 0.05). The other 28 patients showed no significant changes of OB volume and olfactory function.</p><p><b>CONCLUSIONS</b>The OB volume was lower in IOL patients as compared to normal controls. The depth of OS showed no significant changes in IOL patients. The OB volume was correlated with olfactory function. The depth of OS did not correlated with the olfactory function. Some IOL patients showed increased OB volume and improved olfactory function with the development of the disease.</p>

Reactive carbonyl compounds (RCCs) cause aggregation and dysfunction of fibrinogen

Fibrinogen is a key protein involved in coagulation and its deposition on blood vessel walls plays an important role in the pathology of atherosclerosis. Although the causes of fibrinogen (fibrin) deposition have been studied in depth, little is known about the relationship between fibrinogen deposition and reactive carbonyl compounds (RCCs), compounds which are produced and released into the blood and react with plasma protein especially under conditions of oxidative stress and inflammation. Here, we investigated the effect of glycolaldehyde on the activity and deposition of fibrinogen compared with the common RCCs acrolein, methylglyoxal, glyoxal and malondialdehyde. At the same concentration (1 mmol/L), glycolaldehyde and acrolein had a stronger suppressive effect on fibrinogen activation than the other three RCCs. Fibrinogen aggregated when it was respectively incubated with glycolaldehyde and the other RCCs, as demonstrated by SDS-PAGE, electron microscopy and intrinsic fluorescence intensity measurements. Staining with Congo Red showed that glycolaldehyde- and acrolein-fibrinogen distinctly formed amyloid-like aggregations. Furthermore, the five RCCs, particularly glycolaldehyde and acrolein, delayed human plasma coagulation. Only glycolaldehyde showed a markedly suppressive effect on fibrinogenesis, none did the other four RCCs when their physiological blood concentrations were employyed, respectively. Taken together, it is glycolaldehyde that suppresses fibrinogenesis and induces protein aggregation most effectively, suggesting a putative pathological process for fibrinogen (fibrin) deposition in the blood.

Investigation on DNA damage of mouse mononuclear cells in peripheral blood induced by low-dose T-2 toxin and deoxynivalenol alone or in combination / 中国地方病学杂志

Objective To investigate the characteristics and extent of mononuclear ceils DNA damage in peripheral blood of mice fed with low dose T-2 toxin and Deoxynivalenol(DON) alone or in combination and to explore the long-term toxicity of the toxin at sub-clinical dose. Methods Eighty female Balb/c mice weighing (14.0 ± 1.5)g 3 weeks after birth were divided randomly into control group, T-2 toxin group, DON group and T-2 toxin combined with DON group according to their body weight, 20 in each group. The mice were injected intraperitoneally T-2 toxin(5 μg·kg-1·d-1), DON(20 μg·kg-1·d-1), T-2 toxin(5 μg·kg-1·d-1) combined with:DON (20μg·kg-1·d-1)respectively,control group were treated by isotonic NaCl. In 16 weeks and 21 weeks of exposure, the tail blood of the mice was collected. The comet rate, tail DNA content,tail length and tail extent moment of mouse mononuclear ceils in peripheral blood was observed using single cell gel electrophoresis(SCGE). Results ① In T-2 toxin group,tail DNA content,tail length and tail extent moment were (27.71 ± 15.85)%, (13.67 ± 5.56)μm, 4.26 ± 3.83 at 16 weeks and (28.38 ± 15.57)%, (13.83 ± 5.47)μm, 4.37 ± 3.82 at 21 weeks, all levels of the indexes increased. In the control group, the corresponding values were (11.87 ± 4.61)%, (10.59±6.70)μm, 1.34±0.98 at 16 weeks and (11.31 ± 3.94)%, (10.83 ± 7.05)μm, 1.29±1.01 at 21 weeks, the differences in the two groups were significant (all P < 0.05) ;②In DON group, the comet rate of cells, tail DNA content and tail extent moment of comet ceils were 5.62%, (28.13 ±13.31)%, 3.39 ± 2.35 at 16 weeks and 7.71%, (29.17 ± 15.12)%, 5.70 ± 4.17 at 21 weeks. In the control group, the tailing rate was 4.34% at 16 weeks and 4.38% at 21 weeks, the differences in the two groups were significant (all P < 0.05);③In the group of T-2 toxin combined with DON,the comet rate, tail DNA content, tail length and tail extent moment was 6.21%, (30.14 ± 15.48)%, (16.93± 6.58)μm, 5.54 ± 4.22 at 16 weeks and 8.17%, (30.85 ± 15.76)%, (17,21±6.45)μm, 5.70 ± 4.17 at 21 weeks. Moreover, the levels were significantly higher than that in the control group(all P < 0.05). The tail DNA content and length of comet cell tail significantly increased in the combine group compared with T-2 group or DON group(P < 0.05). Conclusions Low dose T-2 toxin or DON can definitely result in DNA damage of mononuclear cells in peripheral blood of mice. The damage induced by T-2 toxin combined with DON is severer than that caused by T-2 toxin or DON alone.

Protecting action of acupuncture serum on calcium over-loaded neurons of the hippocampus in rats of ischemia-reperfusion / 中国针灸

<p><b>OBJECTIVE</b>To investigate the effect of acupuncture serum on Ca2+ content in the cultured nervous cells of hippocampus after ischemia-reperfusion, so as to probe into humoral factors in acupuncture treatment.</p><p><b>METHODS</b>The neurons of the hippocampus from the new born rats were cultured for 9-11 days. Fluorescein-molecular probe Fluo-3 AM was used for staining of intracellular Ca2+. Fluorescent levels in the nervous cells cultured with the serum of the normal rats or the rats given electroacupuncture at "Baihui" (GV 20), "Zusanli" (ST 36), "Quchi" (LI 11) and "Sanyinjiao" (SP 6) for 2 weeks were determined by using a laser confocal microscope.</p><p><b>RESULTS</b>After the normal serum was added, the intracellular Ca2+ fluorescent levels increased to 697 +/- 113 from 461 +/- 96, while after acupuncture serum was added, the Ca2+ fluorescent levels decreased to 584 +/- 103 from 673 +/- 108, indicating that after addition of acupuncture serum, the increased intracellular Ca2+ content could be decreased.</p><p><b>CONCLUSION</b>There are some active substances in acupuncture serum which can obviously decrease intracellular Ca2+ content after ischemia-reperfusion, so as to provide a direct evidence for role of humoral factor in acupuncture treatment.</p>

Effect of glycyrrhetinic acid on invasive capacity of leukemic cells and activity of gelatinase / 中国中西医结合杂志

<p><b>OBJECTIVE</b>To study the effect of glycyrrhetinic acid (GA) on the invasive capacity of leukemic cells and the activity of intracellular gelatinase.</p><p><b>METHODS</b>The effect of GA, in different concentrations, on the proliferation of cultured K562 and HL-60 leukemic cells in vitro was determined by MTT assay; that on cell invasive capacity was tested by Transwell cubicle matrigel invasion assay; and that on the activity of gelatinase in cells was detected by gelatin zymography.</p><p><b>RESULTS</b>GA showed significant inhibitory effect on the proliferation of K562 and HL-60 leukemic cells; it inhibited the invasive capacity of cells in concentration-dependent manner; and significantly down-regulated the activity of gelatinase A and B in cells.</p><p><b>CONCLUSIONS</b>GA can inhibit invasive capacity of K562 and HL-60 leukemia cells by way of suppressing the activity of gelatinase A and B. This study provides an experimental evidence for preventing extra-medullary infiltration of leukemic cells.</p>

Correlates of and willingness to participate in HIV voluntary counseling and testing among migrants in a city of Shanxi province / 中华流行病学杂志

<p><b>OBJECTIVE</b>To determine the correlates of and willingness to participate(WTP) in HIV voluntary counseling and testing (VCT) among migrants in Shanxi province.</p><p><b>METHODS</b>Through quota sampling, a total of 1280 migrants were recruited from 6 different venues where migrants were most likely employed to administer a face-to-face anonymous interview.</p><p><b>RESULTS</b>Knowledge of VCT among migrants was low. Only 56.6% of migrants had heard of HIV voluntary counseling and testing. 64.5% reported willingness to accept VCT after participants were informed that HIV counseling and testing was offered free of charge Centers for Disease Prevention and Control (48.7%), hospital (27.0%) and home (18.5%) were most preferred places for VCT service. Logistic regression analysis indicated that the willingness was associated with having a history of HIV test, having better knowledge of HIV, no discrimination against people with HIV, and high HIV/AIDS perception.</p><p><b>CONCLUSION</b>Community-based health education programs for improving HIV/AIDS knowledge, promoting acceptance of VCT and eliminating discrimination to HIV-infected persons were called for.</p>

Endoscopic transoropharyngeal approach to the ventral region of craniocervical junction / 中华耳鼻咽喉头颈外科杂志

<p><b>OBJECTIVE</b>To discuss the surgical methods and clinical effect of endoscopic transoropharyngeal approach to deal with the lesions of the ventral region of the craniocervical junction.</p><p><b>METHODS</b>From August 2002 to November 2006, endoscopic transoropharyngeal approach was taken to deal with the lesions of the ventral region of the craniocervical junction, including 6 patients with chordoma, 5 patients with craniovertebral malformation, 3 patients with skull-base invagination combined with Chiari malformation, 2 patients with odontoid fracture . 0 degrees endoscope was used to deal with the lesions of middle and lower clivus, 30 degrees endoscope was used to deal with the lesions of craniovertebral malformation.</p><p><b>RESULTS</b>Follow-up ranged from 2 to 48 months. Three patients with chordoma recurred. All patients with craniovertebral malformation recovered.</p><p><b>CONCLUSIONS</b>Endoscopic transoropharyngeal approach is a new method to deal with the lesions of the ventral region of the craniocervical junction, and it has many advantages, such as direct approach, good exploration, micro-invasive, wide operation space, and good results.</p>

Acupuncture-serum decreases Ca2+ content in cultured rat myocardial cells / 中国针灸

<p><b>OBJECTIVE</b>To explore whether humoral factors play a role in the mechanisms of acupuncture.</p><p><b>METHODS</b>Primary culture of myocardial cells of neonatal rats were carried out. Five days later, they were labeled by fluorescent molecular probe Fluo-3AM. Changes of Ca2+ contents in the cultured myocardial cells after addition of the normal rat serum or acupuncture-serum of the rat who received acupuncture at "Neiguan" (PC 6) and Jianshi (PC 5), were dynamically observed by a confocal laser scanning microscopy.</p><p><b>RESULTS</b>After addition of normal serum of the rat, the intracellular Ca2+ level increased to a certain degree, and then gradually tended to stability, which was significantly decreased by addition of the acupuncture-serum (P < 0.01).</p><p><b>CONCLUSION</b>The serum of the rat who received acupuncture at acupoints can decrease the Ca2+ level in cultured myocardial cells, which provides a direct evidence for serum factors involving in acupuncture mechanism.</p>

Preliminary study on effect of acupuncture serum on Ca2+ content in cultured neurons of cerebral cortex / 中国针灸

<p><b>OBJECTIVE</b>To observe effect of serum of the rat after acupuncture on Ca2+ content of cultured nervous cells in vitro for exploring the role of humoral factors in acupuncture.</p><p><b>METHODS</b>Neurons of the cerebral cortex from the new born rats were taken and were cultured in a medium, 7 - 10 days later, fluorescein-molecular probe Fluo-3AM was used for staining of intracellular Ca2+. The intracellular Ca2+ levels in the nervous cells cultured with the serum of the normal rats or the rats given acupuncture at "Baihui" (GV 20), "Zusanli" (ST 36), "Quchi" (LI 11) and "Sanyinjiao" (SP 6) for 2 weeks were determined by using a laser confocal microscope.</p><p><b>RESULTS</b>After addition of the serum of.normal rats, the intracellular Ca2+ level increased and then gradually got stable, and when the acupuncture serum was added to the cultured medium, its level decreased to a certain extent.</p><p><b>CONCLUSION</b>Acupuncture serum can significantly decrease Ca2+ level in cultured cells of the cerebral cortex, which provides a direct evidence for involvement of humoral factors in the role of acupuncture.</p>