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Two Cases of Epidermoid Cyst of the Buccal Floor Simulating: A Tumour of the Submandibular Gland
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作者 Aminata Mbaye Ndeye Fatou Thiam +3 位作者 Ababacar Diegane Faye Mouminatou Seye Houra Ahmed Cire Ndiaye 《International Journal of Otolaryngology and Head & Neck Surgery》 2023年第5期301-308,共8页
Dermoid cyst of the oral floor is rare benign tumour, who having three histological aspects: dermoid, teratoid and epidermoid. This one is characterized by the presence of a squamous stratified epithelium with cutaneo... Dermoid cyst of the oral floor is rare benign tumour, who having three histological aspects: dermoid, teratoid and epidermoid. This one is characterized by the presence of a squamous stratified epithelium with cutaneous remnants. It may occur in any part of the body, however their frequency in the ENT sphere is relatively scarce. Seven per cent (7%) only of epidermoid cysts occur in the cervico-facial area, 1.6% of which locate at the floor level. When they are located submandibular, they can pose diagnostic difficulties and look like a tumour of the submaxillary gland. We report two cases of epidermoid cyst of the floor. Both patients suffered from swelling of the submandibular gland. Magnetic Resonance Imaging was not requested due to lack of resources. However, surgery allowed in both cases the excision of a cyst next to a normal submandibular gland. Patients did well post operatively. 展开更多
关键词 Epidermoid Cyst Mouth Floor submandibular gland SURGERY TUMOUR
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Botulinum toxin A inhibits salivary secretion of rabbit submandibular gland 被引量:6
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作者 Xiao-Feng Shan Hui Xu +2 位作者 Zhi-Gang Cai Li-Ling Wu Guang-Yan Yu 《International Journal of Oral Science》 SCIE CAS CSCD 2013年第4期217-223,共7页
Botulinum toxin A (BTXA) has been used in several clinical trials to treat excessive glandular secretion; however, the precise mechanism of its action on the secretory function of salivary gland has not been fully e... Botulinum toxin A (BTXA) has been used in several clinical trials to treat excessive glandular secretion; however, the precise mechanism of its action on the secretory function of salivary gland has not been fully elucidated. In this study, we aimed to investigate the effect of BTXA on secretion of submandibular gland in rabbits and to identify its mechanism of action on the secretory function of salivary gland. At 12 weeks after injection with 5 units of BTXA, we found a significant decrease in the saliva flow from submandibular glands, while the salivary amylase concentration increased. Morphological analysis revealed reduction in the size of acinar cells with intracellular accumulation of secretory granules that coalesced to form a large ovoid structure. Expression of M3-muscarinic acetylcholine receptor (M3 receptor) and aquaporin-5 (AQP5) mRNA decreased after BTXA treatment, and distribution of AQP5 in the apical membrane was reduced at 1, 2 and 4 weeks after BTXA injection. Furthermore, BTXA injection was found to induce apoptosis of acini. These results indicate that BTXA decreases the fluid secretion of submandibular glands and increases the concentration of amylase in saliva. Decreased expression of M3 receptor and AQP5, inhibition of AQP5 translocation, and cell apoptosis might involve in BTXA-reduced fluid secretion of submandibular lands. 展开更多
关键词 AQUAPORIN-5 APOPTOSIS botulinum toxin A M3-muscarinic acetylcholine receptor submandibular gland
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Effects of Chinese herbs on salivary fluid secretion by isolated and perfused rat submandibular glands 被引量:9
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作者 Masataka Murakami Mu-Xin Wei +1 位作者 Wei Ding Qian-De Zhang 《World Journal of Gastroenterology》 SCIE CAS CSCD 2009年第31期3908-3915,共8页
AIM: TO determine whether Chinese herbs (CHs) relieve xerostomia (dry mouth) by increasing salivary secretion. METHODS: The submandibular glands of Wistar rats were surgically isolated and perfused arterially wi... AIM: TO determine whether Chinese herbs (CHs) relieve xerostomia (dry mouth) by increasing salivary secretion. METHODS: The submandibular glands of Wistar rats were surgically isolated and perfused arterially with buffered salt solution. After control perfusion, recording started 5 min prior to the start of stimulation. After fluid secretion was induced by 0.2 μmol/L carbamylcholine (CCh) in the perfusate for 10 min, Chinese herb (CH) was added in the perfusion for 5 min. CCh was then overloaded at 0.2 μmol/L in the perfusion for 20 min. The volume of salivary fluid secretion was recorded by a computer-controlled balance system. RESULTS: Saliva secretion formed an initial ephemeral peak at 30 s followed by a gradual increase to a sustained level. CH alone induced no or little saliva in all types of CH selected. During perfusion with CH,overloading of CCh promoted fluid secretion in 1S of 20 CHs. This promotion was classified into four patterns, which were eventually related to the categories of CH: Overall sustained phase was continuously raised (Yin-nourishing, fluid production-promoting and heatclearing agents); The sustained secretion rose to reach a maximum then decreased (Qi-enhancing agent); Sustained secretion rose to reach the highest maximum and was then sustained with a slight decline (swelling-reducing, phlegm-resolving and pus-expelling agents); Stimulation of salivary secretion without any added stimulants. Addition of CCh raised the fluid secretion to reach the highest maximum then sharply decreased to a lower sustained level (blood activating agent). CONCLUSION: The present findings lead to the conclusion that various CHs have different promotional effects directly on the salivary gland. 展开更多
关键词 Chinese herbs Salivary secretion submandibular glands XEROSTOMIA
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Clinical significance of hypoechoic submandibular gland lesions in type 1 autoimmune pancreatitis
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作者 Shinichi Takano Mitsuharu Fukasawa +7 位作者 Makoto Kadokura Hiroko Shindo Ei Takahashi Sumio Hirose Yoshimitsu Fukasawa Satoshi Kawakami Tadashi Sato Nobuyuki Enomoto 《World Journal of Gastroenterology》 SCIE CAS 2017年第18期3295-3300,共6页
To assess the role of ultrasonography of submandibular glands (SGs) in the diagnosis of type 1 autoimmune pancreatitis (AIP).METHODSThirty-seven patients who were definitively diagnosed with type 1 AIP according to th... To assess the role of ultrasonography of submandibular glands (SGs) in the diagnosis of type 1 autoimmune pancreatitis (AIP).METHODSThirty-seven patients who were definitively diagnosed with type 1 AIP according to the international consensus diagnostic criteria (ICDC) for AIP at our institution between December 1990 and April 2016 were retrospectively reviewed. Findings by physical examination, ultrasonography, and scintigraphy of SGs were analyzed to reach a diagnosis based on the ICDC for AIP. The efficacy of corticosteroid treatment in the resolution of hypoechoic lesions in SGs was also evaluated by assessment with ultrasonography before and after treatment in 18 cases.RESULTSThe sensitivity of multiple hypoechoic lesions in SGs by ultrasonography for the diagnosis of sialadenitis in type 1 AIP (84%) was higher than that of physical examination (46%), scintigraphy (28%), and SGs thickness (49%). Ultrasonographic evidence of hypoechoic lesions in SGs improved the definitive diagnosis of sialadenitis and type 1 AIP by the ICDC criteria in 11 (30%) and 2 (5.4%) cases, respectively. Multiple hypoechoic lesions in SGs were resolved or disappear by corticosteroid administration in 14 of 16 cases with hypoechoic lesions in SGs, whereas the ultrasonographic findings in the remaining 2 cases with hypoechoic lesions in SGs and the 2 cases with homogenous SG parenchyma remained unchanged after corticosteroid administration.CONCLUSIONSG ultrasonography to detect multiple hypoechoic lesions might be useful for type 1 AIP diagnosis by improving diagnostic accuracy together with the ICDC sialadenitis criteria. 展开更多
关键词 Autoimmune pancreatitis ULTRASONOGRAPHY submandibular glands International consensus diagnostic criteria SIALADENITIS
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Sclerosing polycystic adenosis of the submandibular gland: Two case reports
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作者 Leng Wu Ying Wang +1 位作者 Chuan-Yu Hu Chun-Ming Huang 《World Journal of Clinical Cases》 SCIE 2021年第12期2930-2936,共7页
BACKGROUND Sclerosing polycystic adenosis(SPA)is a rare disease of salivary glands,similar to fibrocystic disease of the breast.It occurs over a wide age range and exhibits a slight female preference.Most SPA cases ha... BACKGROUND Sclerosing polycystic adenosis(SPA)is a rare disease of salivary glands,similar to fibrocystic disease of the breast.It occurs over a wide age range and exhibits a slight female preference.Most SPA cases have occurred in the parotid gland.The exact nature of SPA is unclear,but its tumor nature has recently been proposed.Although SPA has a good prognosis after adequate surgery,atypical lesions might occur,ranging from mild dysplasia to carcinoma in situ in some cases.To the best of our knowledge,only five cases of SPA in the submandibular gland have been reported to date.Here,we present two new cases of SPA involving the submandibular gland.CASE SUMMARY A 50-year-old woman and a 52-year-old woman were referred to Tongji Hospital in Wuhan,China,with complaints of moderate pain,recurrent swelling,and a mass in the submandibular area.After admission,the two cases of the submandibular mass were examined physically.The boundary of the submandibular tumor was clear,and the range of motion was good.After preoperative examinations,surgery was performed on a selective basis.Postoperative histopathological examination revealed a well-defined mass with acinar structures,ducts,or cystic dilated glands of various sizes scattered in a large number of proliferative sclerosing stroma.There were flat and cuboidal cells,and eosinophils in the duct epithelium.There was also a eosinophilic substance in the lumen of dilated cysts.No atypical epithelial hyperplasia,invasive growth,or carcinoma in situ was found.Based on the above findings,the mass was diagnosed as SPA.Both patients have remained asymptomatic and no recurrence or distant metastasis had occurred by the 7-mo and 5-year follow-up,respectively.CONCLUSIONSPA is a rare disease of the salivary gland. Even though it has a good prognosisafter adequate surgery, atypical lesions may occur from mild dysplasia tocarcinoma in situ. However, no recurrence, distant metastasis, or mortality hasbeen reported for submandibular gland SPA. Clinicians and pathologists shouldbe familiar with the characteristics of SPA in the submandibular gland to avoidmisdiagnosis and overtreatment. 展开更多
关键词 Sclerosing polycystic adenosis submandibular gland HISTOPATHOLOGY DIAGNOSIS TREATMENT Case report
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Salivary duct carcinoma of the submandibular gland presenting a diagnostic challenge: A case report
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作者 Toshihiro Uchihashi Shingo Kodama +5 位作者 Akinari Sugauchi Shinichiro Hiraoka Katsutoshi Hirose Yu Usami Susumu Tanaka Mikihiko Kogo 《World Journal of Clinical Cases》 SCIE 2021年第12期2908-2915,共8页
BACKGROUND Salivary duct carcinoma(SDC)is a rare,extremely aggressive malignancy that arises in the submandibular gland.It can metastasize locally early and therefore is an important differential diagnosis of metastat... BACKGROUND Salivary duct carcinoma(SDC)is a rare,extremely aggressive malignancy that arises in the submandibular gland.It can metastasize locally early and therefore is an important differential diagnosis of metastatic disease in cervical lymph nodes or specific lymphadenitis such as tuberculous cervical lymphadenitis.CASE SUMMARY We report a case of SDC in the submandibular gland that presented diagnostic difficulty.The lesion was coincidentally discovered through examination of the radiolucent area of the maxilla.Imaging failed to confirm the possibility of specific inflammation,leading us to execute an open biopsy to verify the diagnosis.The surgical specimen showed that the submandibular gland was primarily replaced with a calcified body.Following histological analysis and confirmation,we performed surgical resection,radiotherapy,and various chemotherapies.CONCLUSION Radiographic imaging characteristics of lymph node metastases of salivary gland cancer,especially of SDC,may resemble other cervical lymphadenitis;calcification at the submandibular gland is the landmark of SDC occurring at the submandibular gland. 展开更多
关键词 Salivary duct carcinoma Tuberculous cervical lymphadenitis submandibular gland CALCIFICATION Salivary cancers Chemotherapy Case report
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Possible Role of the Submandibular Gland in the Development of Obesity in Mice
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作者 JUNKO YAMASHITA SHIN-ICH HAYASHI +3 位作者 YUKIO HIRATA AND MASAYASU MIYAJIMA(Department of Biochemistry 2, The Jikei University School of Medicine,Tokyo 105 Japan Department of Anatomy, School of Medicine,University of the Ryukyus. Okinawa 903-01, Japan Laborat 《Biomedical and Environmental Sciences》 SCIE CAS CSCD 1996年第2期191-198,共8页
The possible role of submandiblular glands (SMG) in the development of obesity was studied in two types of genetically obese mice, ob/ob and yellow Ay: Obesity is caused by hyperplasia followed by hypertrophy in ob/ob... The possible role of submandiblular glands (SMG) in the development of obesity was studied in two types of genetically obese mice, ob/ob and yellow Ay: Obesity is caused by hyperplasia followed by hypertrophy in ob/ob mice and mainly by hypertrophy in Ay mice.The histological features of SMGs exhibited clear sexual dimorphism in both mice similarto lean controls. The SMGs of ob/ob mice was smaller in size and had smaller granular convoluted tubular portions than lean controls, while the SMGs of Ay mice did not differ from lean controls. Sialoadenectomy before and after development of obesity gCnerally reduced the gain of body weights in both sexes of Ay mice but not in ob/ob mice. The content of epidermal growth factor (EGF) in the SMGs was higher in Ay mice and lower in ob/ob mice than their controls. The possible role of EGF in the SMGs in the development of obesity is discussed 展开更多
关键词 gene EGF Res Possible Role of the submandibular gland in the Development of Obesity in Mice
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Changes of norepinephrine and tumor necrosis factor in submandibular gland of rats with sympathetic nerve injury and the protective effect of 17 beta-estradiol
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作者 Yagao Feng Suya Deng Zhenqi Liu Min Hu Houjun Yan Qiusheng Wang 《Neural Regeneration Research》 SCIE CAS CSCD 2006年第4期325-327,共3页
BACKGROUND: Recent researches have indicated that estrogen has extensive neuroprotective effects. So some studies designed ovariectomized animal models and administrated with estrogen, so as to verify its neuroprotec... BACKGROUND: Recent researches have indicated that estrogen has extensive neuroprotective effects. So some studies designed ovariectomized animal models and administrated with estrogen, so as to verify its neuroprotective effects. OBJECTIVE: To observe the effect of 17 beta-estradiol on the content of norepinephrine (NE) and level of tumor necrosis factor (TNF) in submandibular glands of rats with sympathetic nerve injury, and analyze the dose-dependence and pathway of action. DESIGN: A randomized control animal study SETTINGS: Department of Hand Surgery, the 252 Hospital of Chinese PLA; Department of Hand Surgery Union Hospital affiliated to Tongji Medical College, Huazhong University of Science and Technology. MATERIALS: Fifty healthy female Wistar rats were randomly divided into 5 groups with 10 rats in each group: sham-operated group, ovariectomy+6-OHDA+saline group, ovariectomy+6-OHDA+17β-estradiol 50, 200 and 500 μg/kg groups. METHODS: The experiments were carried out in Tongji Medical College, Huazhong University of Science and Technology between October 2005 and March 2006. Bilateral ovaries were only exposed but not resected for the rats in the sham-operated group, but bilateral ovaries were resected in all the other groups. In the ovariectomy+6-OHDA+176-estradiol 50, 200 and 500 μg/kg groups, the rats were administrated with intraperitoneal injection of 6-OHDA (8 mg/kg), and then immediately given 176-estradiol of corresponding dosages respectively, once a day for 10 days continuously. Rats in the sham-operated group and ovariectomy+6-OHDA+saline group were administrated with saline of the same volume. After administration, 5 rats in each group were killed to determine the NE contents in bilateral submandibular glands with high performance liquid chromatography-electrochemical detector (HPLC-ECD), and the other 5 rats were used to determine the TNF levels in submandibular glands with enzyme-linked immunosorbant assay. MAIN OUTCOME MEASURES: The NE contents and TNF levels in submandibular glands of rats in each group were observed. RESULTS: All the 50 rats were involved in the analysis of results. (1) The NE content was obviously lower in the ovariectomy+6-OHDA+saline group than in the sham-operated group [(1 035±196), (1 823±314) ng/g, P 〈 0.05], there were no significant differences between the ovariectomy+6-OHDA+17β-estradiol 50 μg/kg group and ovariectomy+6-OHDA+saline group [(1 004±253), (1 035±196) ng/g, P 〉 0.05], but obviously higher in the ovariectomy+6-OHDA+17β-estradiol 200 and 500 μg/kg groups than in the ovariectomy+6-OHDA+saline group [(1 487±268), (1 939±274), (1 035±196) ng/g, P 〈 0.05]. (2) The TNF level was obviously higher in the ovariectomy+6-OHDA+saline group than in the sham-operated group [(3.498±0.792), (1.893±0.533) ng/g, P 〈 0.05], there were no significant differences between the ovariectomy+ 6-OHDA+17β-estradiol 50 μg/kg group and ovariectomy+6-OHDA+saline group [(3.328 ±0.712), (3.498±0,792) ng/g, P 〉 0.05], but obviously lower in the ovariectomy+6-OHDA+17β-estradiol 200 and 500 μg/kg groups than in the ovariectomy+6-OHDA+saline group [(2.639±0.438), (2.016±0.619), (3.498+0.792) ng/g, P 〈 0.05]. CONCLUSION: Estrogen has obvious protective effect dose-dependently on 6-OHDA induced chemical sympathetic nerve terminal injury in rats, and it may play its protective role by reducing TNF level and ameliorating inflammatory reaction. 展开更多
关键词 Changes of norepinephrine and tumor necrosis factor in submandibular gland of rats with sympathetic nerve injury and the protective effect of 17 beta-estradiol NGF
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Thermal influence of saliva secretion <i>ex vivo</i>in the mouse submandibular gland
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作者 Taro Mukaibo Tetsuji Nakamoto +4 位作者 Yusuke Kondo Manami Kidokoro Atsushi Imamura Chihiro Masaki Ryuji Hosokawa 《Open Journal of Stomatology》 2013年第1期83-88,共6页
The physiological and pharmacological responses of an ex vivo mouse submandibular gland were used to study fluid secretion and cell signaling in response to muscarinic stimulation at increasing temperatures. Saliva pr... The physiological and pharmacological responses of an ex vivo mouse submandibular gland were used to study fluid secretion and cell signaling in response to muscarinic stimulation at increasing temperatures. Saliva production at 37°C was 5.5-fold that at 25°C with pilocarpine stimulation and 9.8-fold that at 25°C with cevimeline stimulation. Both of these muscarinic agonists are used clinically. With the experimental agonist carbachol (CCh), saliva secretion was increased with an increase in temperature, but the CCh concentration producing the peak flow was the same in both dose-response curves, suggesting that the muscarinic receptor itself is not responsible for the temperature dependence. Purinergic agonists also induced temperature-dependent saliva production ex vivo. The calcium ionophore A23187 failed to have a significant effect on saliva production. The CCh-induced increase in intracellular Ca2+ also upregulated the initial increase and sustained the plateau phase of saliva flow. Thus, muscarinic receptor stimulation of saliva production is temperature sensitive due to an increase in intracellular Ca2+. 展开更多
关键词 submandibular gland Fluid SECRETION Cevimeline PILOCARPINE THERMAL INFLUENCE
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Aquaporin 5 is degraded by autophagy in diabetic submandibular gland 被引量:5
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作者 Yan Huang Xijin Shi +7 位作者 Qianying Mao Yan Zhang Xin Cong Xueming Zhang Zhejing Zhang Liling Wu Ruolan Xiang Guangyan Yu 《Science China(Life Sciences)》 SCIE CAS CSCD 2018年第9期1049-1059,共11页
Autophagy is a catabolic process which is involved in the development of many diseases including diabetes mellitus and its complications. Hyposalivation is a common complication of diabetes mellitus, whereas its mecha... Autophagy is a catabolic process which is involved in the development of many diseases including diabetes mellitus and its complications. Hyposalivation is a common complication of diabetes mellitus, whereas its mechanism remains unclear. Here, we observed that the stimulated salivary flow rate of SMG was significantly decreased in db/db mice, a diabetic mice model. The expressions of aquaporin 5(AQP5), a water channel protein, were decreased, whereas the m RNA level of AQP5 was increased in SMGs of both diabetic patients and mice. Under transmission electron microcope, more autophagosomes were detected in diabetic SMGs. Expressions of autophagy related proteins LC3 II, Beclin-1 and ATG5 were increased, meanwhile autophagy substrate p62 was decreased in SMGs of diabetic patients and mice, indicating that autophagy was activated in diabetic SMG.Double immunofluorescence staining showed that the colocalization of AQP5 and LC3 was increased in SMGs of diabetic mice.In cultured SMG-C6 cells, high glucose(HG), but not high osmotic pressure, reduced AQP5 protein expression and induced autophagy. Moreover, inhibition of autophagy by 3-methyladenin, an autophagy inhibitor, or by autophagy-related gene 5 siRNA, decreased HG-induced AQP5 reduction in SMG-C6 cells. Additionally, the expression of p-p85, p-Akt and p-mTOR were decreased in HG-treated SMG-C6 cells. Pretreatment with 740 Y-P, a PI3 K agonist, significantly suppressed HG-induced autophagy and AQP5 degradation. Taken together, these results indicate that autophagy plays a crucial role in AQP5 degradation in diabetic SMG via PI3 K/Akt/mTOR signaling pathway, which contributes to the dysfunction of diabetic SMG. Our study provides a novel mechanism of diabetic hyposalivation. 展开更多
关键词 diabetes mellitus submandibular gland autophagy aquaporin 5 hyposalivation
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Anatomy of arteries and veins of submandibular glands 被引量:3
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作者 LI Li GAO Xiu-lai +4 位作者 SONG Yi-zhi XU Heng YU Guang-yan ZHU Zheng-hong LIU Jing-ming 《Chinese Medical Journal》 SCIE CAS CSCD 2007年第13期1179-1182,共4页
Background Transplanting a vascularized autologous submandibular gland (SMG) is considered an effective method to treat severe keratoconjunctivitis sicca. But the operation may fail due to the anatomic variances in ... Background Transplanting a vascularized autologous submandibular gland (SMG) is considered an effective method to treat severe keratoconjunctivitis sicca. But the operation may fail due to the anatomic variances in the blood vessels of SMG. The present study aimed to investigate the submandibular glands at the microanatomy level. Methods The microanatomy of blood vessels including arteries and veins of submandibular gland was investigated using 30 adult corpses and 60 submandibular glands were anatomized under a surgical microscope. The lengths and diameters of the arterial and venous glandular branches were measured using sliding caliper. Results The submandibular gland was mainly supplied by the facial artery and submental artery, partly by the lingual artery and external jugular artery. The venous drainage of the submandibualr gland occurred through the anterior facial vein, the venae comitantes of facial artery, the vein close to the Whaston's duct (the hilum vein), and seldom drained to external jugular vein and other veins. Conclusions The anatomy of SMG is a complicated structure. Determining the main blood vessels of the submandibular gland is very important to achieve a successful vascularized autologous SMG transplant. 展开更多
关键词 submandibular gland blood vessel ANATOMY
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Morphological characteristics of submandibular glands of miniature pig 被引量:2
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作者 Zhang Xin Li Jun +3 位作者 Liu Xiao-yong Sun Yi-lin Zhang Chun-mei Wang Song-ling 《Chinese Medical Journal》 SCIE CAS CSCD 2005年第16期1368-1373,共6页
Background Miniature pig (minipig) is increasingly used as a large animal model for a variety of biomedical studies. Little information is available in the literature on anatomy, histology and sialogragh of the subm... Background Miniature pig (minipig) is increasingly used as a large animal model for a variety of biomedical studies. Little information is available in the literature on anatomy, histology and sialogragh of the submandibular gland of the minipig. The purpose of this study was to characterize the morphology of a miniature pig's (minipig) submandibular gland as a large animal model for further biomedical studies. Methods Five minipigs were subjected to sialographic, anatomic, histologic, histochemical and uhrastructural evaluations for submandibular glands. Results Sialograms showed a long, horizontal main excretory duct and a pear-shaped gland located inferoposterior to the angle of the mandible. The submandibular glands lied superficial to the suprahyoid, and infrahyoid muscle groups, and were covered by the inferior portion of the parotid gland. The submandibular glands were characterized by a mixed parenchyma of mucous and serous secretory aeini. Alcian blue (AB) staining and periodic acid-Schiff (PAS) reactions demon-strated that minipig submandibular glands synthesized and secreted acid mucous substances by serous cells and polysaccharide, and neutral mucous substances, by mucous cells. Conclusion The submandibular gland of the minipig is considered a useful large salivary gland animal model for biomedical studies. 展开更多
关键词 submandibular gland miniature pig SIALOGRAPHY ANATOMY HISTOLOGY
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Claudin-4 is required for AMPK-modulated paraceliular permeability in submandibular gland ceils 被引量:2
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作者 Ruo-Lan Xiang Mei Mei +5 位作者 Xin Cong Jing Li Yan Zhang Chong Ding Li-Ling Wu Guang-Yan Yu 《Journal of Molecular Cell Biology》 SCIE CAS CSCD 2014年第6期486-497,共12页
Tight junction plays an important rote in mediating paraceUular permeability in epithelia. We previously found that activation of AMP- activated protein kinase (AMPK) increased saliva secretion by modulating paraceU... Tight junction plays an important rote in mediating paraceUular permeability in epithelia. We previously found that activation of AMP- activated protein kinase (AMPK) increased saliva secretion by modulating paraceUular permeability in submandibular glands. However, the molecular mechanisms underlying AMPK-modulated paraceUular permeability are unknown. In this study, we found that AICAR, an AMPK agonist, increased saliva secretion in the isolated rat submandibular glands, decreased transepithelial electrical resistance (TER), and increased 4 kDa FITC-dextran flux in cultured SMG-C6 cells. AICAR also induced redistribution of tight junction protein claudin-4, but not claudin-1, claudin-3, occtudin, or ZO-1, from the cytoplasm to the membrane. Moreover, knockdown of claudin-4 by shRNA suppressed while claudin-4 re-expression restored the TER and 4 kDa FITC-dextran flux responses to AICAR. Additionally, AICAR increased ERK1/2 phosphorylation, and inhibition of ERK1/2 by U0126, an ERK1/2 kinase inhibitor, or by siRNA decreased AICAR-induced TER responses. AICAR induced the serine S199 phosphorylation of claudin-4 and enhanced the inter- action of claudin-4 and occludin. Furthermore, pretreatment with U0126 significantly suppressed AMPK-modulated phosphorytation, redistribution, and interaction with occludin of claudin-4. Taken together, these results indicated that claudin-4 played a crucial role in AMPK-rnodutated paraceUular permeability and ERK1/2 was required in AMPK-modulated tight junction barrier function in subman- dibular gland. 展开更多
关键词 AMP-activated protein kinase daudin-4 tight junction paracellular permeability submandibular gland
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Establishment of submandibular gland allotransplantation model in miniature swine 被引量:1
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作者 GE Xi-yuan YU Guang-yan CAI Zhi-gang MAO Chi 《Chinese Medical Journal》 SCIE CAS CSCD 2006年第6期482-487,共6页
Background Autologous transplantation of the submandibular gland (SMG) into the temporal fossa with microvascular anastomosis has been successfully applied in severe xerophthalmia patients as a permanent tear substi... Background Autologous transplantation of the submandibular gland (SMG) into the temporal fossa with microvascular anastomosis has been successfully applied in severe xerophthalmia patients as a permanent tear substitute. However, severe xerophthalmia can be accompanied by salivary gland dysfunction, making such autotransplantation unsuitable. Therefore, SMG allotransplantation might be a solution. The aim of this study was to assess the technical feasibility of submandibular gland allotransplantation. Methods Twelve miniature swine were randomized to serve as donors or recipients. One SMG was transplanted between a donor and a recipient. The donor SMG was revascularized by microvascular anastomosis of its vascular pedicle to the recipient lingual artery and external jugular vein. The secretory duct was implanted into the vestibule of the mouth through a subcutaneous tunnel. No ilnmunosuppressive agent was administered. The results were assessed by visual inspection of the secretion, and histopathological examination of the transplanted SMG. Results Technically, all surgical procedures were successful. Clear secretion flowed out of the duct as soon as blood supply of the transplanted submandibular gland was reestablished. The secretion of the gland lasted for 5 days. As expected, an acute rejection reaction occurred after surgery because no immunosuppressive agents were used. Secretion from the transplanted SMG ceased within 5 days. Conclusions A model of SMG allotransplantation can be established in miniature swine. The technique of submandibular gland allotransplantation is feasible. 展开更多
关键词 submandibular gland TRANSPLANTATION miniature swine animal model
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Effect of Bushen Qingre Yuyin Decoction on Salivary Secretion, Spleen Index, Submandibular Gland Index, Submandibular Gland Histomorphology, and aqp5 Expression in the Nonobese Diabetic Mouse Model
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作者 Wan-Ru Wang Huan-Yu Liu +5 位作者 Zhi-Xiong Ren Lu Chen Sai Liu Lian-Cun Shi Xiao-Ping Yan Feng Mi 《World Journal of Traditional Chinese Medicine》 2020年第4期508-514,共7页
Objective:The objective of this study was to observe the effect of Bushen Qingre Yuyin Decoction on the spleen index,submandibular gland index,salivary secretion,submandibular gland morphology,and aquaporin 5(AQP5)exp... Objective:The objective of this study was to observe the effect of Bushen Qingre Yuyin Decoction on the spleen index,submandibular gland index,salivary secretion,submandibular gland morphology,and aquaporin 5(AQP5)expression levels in the submandibular gland.Materials and Methods:Fifty 8-week-old nonobese diabetic(NOD)female mice were randomly divided into the following five groups:model;hydroxychloroquine;and high-,medium-,and low-dose Bushen Qingre Yuyin Decoction prescription.The blank group consisted of ten 8-week-old Balb/C rats.Bushen Yuyin Qingre Decoction was administered by gavage at 20,40,and 80 g/kg in the low-,medium-,and high-dose groups,respectively.The hydroxychloroquine group was administered hydroxychloroquine at a dose of 80 mg/kg by gavage.The normal and model groups were administered the same amount of saline.After the different administrations,the amount of salivary secretion in the mice was regularly observed.After 12 weeks,the mice were sacrificed,and their submandibular gland tissues were excised,stained with hematoxylin-eosin,and pathologically scored.AQP5 expression levels in the tissues were detected using real-time polymerase chain reaction.Results:The spleen index of mice in the high-dose group was higher than that in the model group(P<0.05),and the submandibular gland index of the hydroxychloroquine group and all the Bushen Qingre Yuyin Decoction prescription groups was higher than that in the model group(P<0.05).After 6 weeks,the salivary volume of the hydroxychloroquine group and all the Bushen Qingre Yuyin Decoction prescription groups was significantly higher than that of the model group(P<0.05);the amount of lymphocyte infiltration in mice among each administration group was significantly reduced(P<0.05);and the AQP5 expression levels in the submandibular glands of mice had significantly increased in the hydroxychloroquine and high-dose groups(P<0.05),with the high-dose group showing the best effect.Conclusion:Bushen Qingre Yuyin Decoction can effectively increase the spleen and submandibular gland indexes of NOD mice,increase the amount of salivary secretion,reduce lymphocyte infiltration in submandibular gland tissue,and significantly increase AQP5 expression levels,which may be positively correlated with the administered dose. 展开更多
关键词 Aquaporin 5 Bushen Qingre Yuyin Decoction nonobese diabetic mouse Sjogren’s syndrome submandibular gland histomorphology
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生腺布液汤对干燥综合征NOD小鼠B细胞活化因子及B细胞活化因子受体表达的影响 被引量:1
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作者 张寒 郝梦桃 +5 位作者 王可心 张正国 艾奕锟 罗亚萍 郜晨静 张静 《陕西中医》 CAS 2024年第8期1036-1041,共6页
目的:观察生腺布液汤对干燥综合征(SS)NOD模型小鼠颌下腺及血清中B细胞活化因子(BAFF)及B细胞活化因子受体(BAFFR)的影响,探索生腺布液汤治疗SS的作用机制。方法:将24只8周龄雌性NOD小鼠随机分为模型组、硫酸羟氯喹组及生腺布液汤组,每... 目的:观察生腺布液汤对干燥综合征(SS)NOD模型小鼠颌下腺及血清中B细胞活化因子(BAFF)及B细胞活化因子受体(BAFFR)的影响,探索生腺布液汤治疗SS的作用机制。方法:将24只8周龄雌性NOD小鼠随机分为模型组、硫酸羟氯喹组及生腺布液汤组,每组8只,另取8只同周龄雌性BALB/c小鼠设为正常对照组。给药组分别予生腺布液汤1.75 g/ml灌胃及硫酸羟氯喹溶液0.0026 g/ml灌胃,模型组及正常组予等量蒸馏水,连续8周。实验期间记录小鼠的一般情况及每日饮水量;HE染色观察各组小鼠颌下腺组织病理变化;免疫组化法检测颌下腺组织BAFF、BAFFR表达;ELISA法检测血清BAFF含量。结果:与模型组相比,生腺布液汤组和硫酸羟氯喹组小鼠饮水量下降(均P<0.05),血清BAFF及颌下腺组织BAFF、BAFFR表达降低(均P<0.05),颌下腺组织中淋巴细胞浸润减少,未见明显浸润灶等组织结构破坏。结论:生腺布液汤能够改善干燥综合征NOD小鼠口干症状,减轻颌下腺淋巴细胞浸润程度,其作用机制可能与降低颌下腺及血清BAFF、BAFFR表达相关。 展开更多
关键词 干燥综合征 生腺布液汤 B细胞活化因子 B细胞活化因子受体 颌下腺 NOD小鼠
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锥形束CT在下颌下腺结石精确诊断中的应用价值
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作者 杨小凤 孙小娟 +2 位作者 乔光伟 周忠伟 兰会霞 《海军军医大学学报》 CAS CSCD 北大核心 2024年第8期1041-1045,共5页
目的比较X线片、超声、CT、锥形束CT(CBCT)对不同位置下颌下腺结石的检出率,探讨三维可视化技术在下颌下腺结石诊疗中的辅助价值。方法回顾性分析2014年11月至2021年3月宁夏医科大学总医院113例下颌下腺结石患者的X线片、超声、CT、CBC... 目的比较X线片、超声、CT、锥形束CT(CBCT)对不同位置下颌下腺结石的检出率,探讨三维可视化技术在下颌下腺结石诊疗中的辅助价值。方法回顾性分析2014年11月至2021年3月宁夏医科大学总医院113例下颌下腺结石患者的X线片、超声、CT、CBCT检查资料,比较4种成像方法对不同位置结石的检出率及总检出率。利用Mimics 19.0软件和CBCT数据对结石进行3D重建,从可视化角度观察结石的位置、大小、形态及数目。结果CBCT和CT对下颌下腺结石的总检出率差异无统计学意义[98.2%(111/113)vs 95.6%(108/113),P>0.05],但均高于X线片(65.5%,74/113)和超声(73.5%,83/113)的总检出率。超声对导管前、中段结石的检出率最低[分别为63.6%(21/33)、72.2%(26/36)],与CBCT[分别为97.0%(32/33)、100.0%(36/36)]、CT[分别为93.9%(31/33)、97.2%(35/36)]相比差异均有统计学意义(均P<0.05)。X线片对导管后段结石的检出率低于超声、CBCT、CT[40.9%(18/44)vs 81.8%(36/44)、97.7%(43/44)、95.5%(42/44),均P<0.01]。将CBCT数据导入Mimics 19.0软件后,成功地对不同大小、形态及数目的下颌下腺结石进行了可视化重建,重建图像清晰,结石与下颌骨的解剖位置关系显示直观。结论CBCT对下颌下腺结石的诊断具有良好的应用价值,可替代传统CT进行涎石病诊断。对于双手双合诊未查及但超声提示的导管后段结石,可直接行CBCT检查进行精确诊断;对于导管前、中段结石,可考虑X线片和CBCT检查。可视化技术有助于临床患者宣教及制定个体化治疗方案。 展开更多
关键词 下颌下腺结石 锥形束计算机断层扫描 诊断 数据可视化
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细针吸取活检在下颌下腺肿物诊断中的价值及误诊原因分析
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作者 王振 申明明 +1 位作者 余小蒙 高润涛 《北京口腔医学》 CAS 2024年第2期102-104,共3页
目的探讨细针吸取活检(FNA)对下颌下腺肿物的诊断价值。方法回顾2013-2022年就诊于首都医科大学附属北京友谊医院口腔科,行FNA并获得最终病理的下颌下腺肿物患者,以最终病理为金标准,计算FNA诊断各型下颌下腺肿物的准确性、灵敏度、特... 目的探讨细针吸取活检(FNA)对下颌下腺肿物的诊断价值。方法回顾2013-2022年就诊于首都医科大学附属北京友谊医院口腔科,行FNA并获得最终病理的下颌下腺肿物患者,以最终病理为金标准,计算FNA诊断各型下颌下腺肿物的准确性、灵敏度、特异性、安全性,分析误诊原因。结果共纳入114例患者。非肿瘤性疾病多为IgG4-RD,FNA诊断准确度为91.2%,灵敏度97.4%,特异性88.2%。FNA诊断下颌下腺良性肿瘤准确度:86.8%,灵敏度:81.7%,特异度:92.6%。FNA诊断下颌下腺恶性肿瘤准确度为93.0%,灵敏度62.5%,特异性98.0%。误诊原因包括10例取样误差及8例病理类型误判。结论FNA在诊断IgG4相关性下颌下腺炎中极具价值,在诊断下颌下腺恶性肿瘤灵敏度较低,有误诊可能,需结合患者资料进行综合考虑。 展开更多
关键词 细针吸取活检 下颌下腺肿瘤 IGG4相关性疾病 敏感性和特异性
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放射后氧化应激对大鼠颌下腺腺泡细胞凋亡的影响
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作者 麦麦提吐尔逊·阿布都乃比 热则耶·麦麦提祖农 +3 位作者 张鹏鑫 齐佳 伍诗涵 许辉 《口腔医学研究》 CAS CSCD 北大核心 2024年第7期605-610,共6页
目的:观察大鼠颌下腺放射后导致的氧化应激对细胞凋亡的影响。方法:24只大鼠随机分为对照组及放射24 h、72 h及1周组。对照组未照射,放射组右侧颌下腺进行一次性20 Gy照射,检测各组大鼠唾液分泌流率。苏木精-伊红(hematoxylin-eosin, HE... 目的:观察大鼠颌下腺放射后导致的氧化应激对细胞凋亡的影响。方法:24只大鼠随机分为对照组及放射24 h、72 h及1周组。对照组未照射,放射组右侧颌下腺进行一次性20 Gy照射,检测各组大鼠唾液分泌流率。苏木精-伊红(hematoxylin-eosin, HE)染色观察颌下腺组织形态改变;酶联免疫吸附试验法(enzyme linked immunosorbent assay, ELISA)检测丙二醛(malondialdehyde, MDA)、还原型谷胱甘肽(glutathione, GSH)及超氧化物歧化酶(superoxide dismutase, SOD)水平。免疫组织化学染色(immunol histochemistry, IHC)观察8-羟基脱氧鸟苷(8-hydroxy-2 deoxyguanosine, 8-OHdG)阳性表达;末端脱氧核苷酸转移酶dUTP缺口末端标记法(TdT-mediated dUTP nick-end labeling, TUNEL)检测颌下腺腺泡细胞凋亡情况;Western blot和实时定量聚合酶链反应(real-time fluorescence quantitative PCR,RT-qPCR)检测凋亡相关蛋白含半胱氨酸的天冬氨酸蛋白水解酶3(cysteinyl aspartate specific proteinase-3,Caspase-3)、Bcl-2关联X的蛋白质(BCL2-associated X protein, BAX)及B淋巴细胞瘤-2基因(B-cell lymphoma-2,Bcl-2)的蛋白及mRNA表达情况。结果:放射后大鼠唾液分泌减少;细胞内空泡化、组织水肿及间隙增宽等病理变化逐渐加重;细胞出现明显的氧化应激反应,并伴随出现细胞的凋亡;凋亡相关蛋白BAX、Bcl-2及Caspase-3蛋白及mRNA表达量异常。结论:放射后氧化应激反应可能是颌下腺细胞凋亡及功能障碍的重要影响因素。 展开更多
关键词 放射损伤 颌下腺 氧化应激 细胞凋亡
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Bone marrow-derived mesenchymal stem cells migrate to healthy and damaged salivary glands following stem cell infusion 被引量:7
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作者 Silke Schwarz Ralf Huss +4 位作者 Michaela Schulz-Siegmund Breda Vogel Sven Brandau Stephan Lang Nicole Rotter 《International Journal of Oral Science》 SCIE CAS CSCD 2014年第3期154-161,共8页
Xerostomia is a severe side effect of radiation therapy in head and neck cancer patients. To date, no satisfactory treatment option has been established. Because mesenchymal stem cells(MSCs) have been identified as ... Xerostomia is a severe side effect of radiation therapy in head and neck cancer patients. To date, no satisfactory treatment option has been established. Because mesenchymal stem cells(MSCs) have been identified as a potential treatment modality, we aimed to evaluate stem cell distribution following intravenous and intraglandular injections using a surgical model of salivary gland damage and to analyse the effects of MSC injections on the recruitment of immune cells. The submandibular gland ducts of rats were surgically ligated. Syngeneic adult MSCs were isolated, immortalised by simian virus 40(SV40) large T antigen and characterized by flow cytometry. MSCs were injected intravenously and intraglandularly. After 1, 3 and 7 days, the organs of interest were analysed for stem cell recruitment. Inflammation was analysed by immunohistochemical staining. We were able to demonstrate that, after intravenous injection, MSCs were recruited to normal and damaged submandibular glands on days 1, 3 and 7. Unexpectedly, stem cells were recruited to ligated and non-ligated glands in a comparable manner. After intraglandular injection of MSCs into ligated glands, the presence of MSCs, leucocytes and macrophages was enhanced, compared to intravenous injection of stem cells. Our data suggest that injected MSCs were retained within the inflamed glands, could become activated and subsequently recruited leucocytes to the sites of tissue damage. 展开更多
关键词 duct ligation mesenchymal stem cells submandibular gland injury XEROSTOMIA
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