双气囊电子小肠镜在小肠狭窄诊断中的作用

目的:比较双气囊电子小肠镜及小肠钡灌检查在疑有小肠狭窄患者中病变的检出率和诊断率,评价双气囊电子小肠镜在小肠狭窄诊断中的价值及安全性.方法:疑患小肠疾病患者76例,行双气囊电子小肠镜检查,分别经口或经肛进镜,对未检出病灶者建议择期改换进镜方式再行检查;其中疑小肠狭窄患者13例均行小肠钡灌检查.比较2种检查方法在疑小肠狭窄患者中病变的检出率、诊断率.结果:疑有小肠狭窄患者13例中有8例经口、3例经肛、2例分别经口和经肛行双气囊电子小肠镜检查,检查所用平均时间74(55-120)min,小肠狭窄病变检出率为84.6%(11/13),其中小肠肿瘤6例,克罗恩病3例,炎性狭窄2例.检出病变中双气囊电子小肠镜诊断率为69.2%(9/13),所有患者均未发生严重不良反应和并发症.疑小肠狭窄患者小肠钡灌检查的病变检出率为53.8%(7/13),其中小肠肿瘤3例,克罗恩病2例,炎性狭窄2例.在小肠钡灌检查未发现异常的6例病变中有4例在双气囊电子小肠镜检查中发现病变;3例未能正确诊断的病例在双气囊电子小肠镜检查中均得到正确诊断.双气囊电子小肠镜在小肠狭窄中的病变检出率和诊断率均明显高于小肠钡灌检查,二者均有显著差异(P<0.05).结论:双气囊电子小肠镜对小肠狭窄有较高的病变检出率和诊断率,无严重不良反应和并发症,可作为首选检查方法.     

双气囊电子小肠镜诊断67例不明原因腹痛的价值

目的 评价双气囊电子小肠镜对不明原因慢性腹痛的诊断价值,探讨小肠病变所致腹痛病因.方法 对2005年6月至2008年6月中南大学湘雅医院67例有慢性腹痛症状,经胃镜、结肠镜、全消化道钡餐、腹部B超及心电图检查阴性的患者行双气囊电子小肠镜检查.结果 67例患者中,36例经肛进镜,19例经口进镜,12例患者接受2次检查分别经口和经肛进镜.41例发现病灶,阳性检出率为61.19%.41例病变包括克罗恩病15例(36.59%),非特异性小肠炎10例(24.39%),肿瘤8例(19.51%),其他病变8例(19.51%).结论 双气囊电子小肠镜对小肠病变所致慢性腹痛具有较高临床诊断价值.小肠克罗恩病、非特异性小肠炎及小肠肿瘤为不明原因小肠源性腹痛最常见病因.     

小肠肿瘤诊断:双气囊小肠镜与其他检查手段的对比研究

目的比较双气囊小肠镜与小肠稀钡灌注和胶囊内镜检查在小肠肿瘤诊断中的诊断率和准确率。方法对59例临床怀疑小肠肿瘤患者行双气囊小肠镜检查。其中有34例和17例患者分别同期行插管法小肠稀钡灌注或胶囊内镜检查。检查分别由专职医师独立操作并诊断，最后进行汇总比较。结果34例小肠稀钡灌注检查者中，19例诊断为小肠肿瘤或怀疑小肠肿瘤，诊断率为55．9％，最终经双气囊小肠镜确诊为12例，诊断准确率为63．2％（12／19例）；在15例小肠稀钡灌注阴性者中，双气囊小肠镜发现肿瘤3例。17例胶囊内镜检查者中，8例检查结果为小肠肿瘤或怀疑小肠肿瘤，诊断率为47．1％，最终经双气囊小肠镜确诊为4例，诊断准确率为4／8例；在9例胶囊内镜阴性者中，双气囊小肠镜发现小肠肿瘤2例。59例患者中，经一侧进镜检查后（经口或经肛）发现小肠肿瘤36例，完成双侧检查后发现肿瘤16例。7例患者在双侧检查后未发现任何病变。双气囊小肠镜对小肠肿瘤的检出率为88．1％，并经病理和临床随访确诊。上述三项检查中未见明显的与操作相关的并发症。结论双气囊小肠镜在小肠肿瘤诊断率及准确率方面明显优于小肠稀钡灌注和胶囊内镜检查。     

双气囊小肠镜在原因不明的慢性腹痛诊断中的价值

目的比较双气囊小肠镜和胶囊内镜对原因不明的慢性腹痛患者的病变检出情况,评价双气囊小肠镜对原因不明的慢性腹痛的诊断价值,探讨小肠疾病导致慢性腹痛的常见病因。方法将46例经胃镜、结肠镜、钡餐等检查结果阴性的慢性腹痛患者行双气囊小肠镜检查,首选进镜方式为经口和经肛2种,首选方式检查后未发现病灶者,改换进镜方式再行检查。另70例患者行胶囊内镜检查。两组患者的相关检查分别由专门医师独立操作并诊断,最后进行汇总分析。结果双气囊小肠镜组46例患者中,15例经口进镜,22例经肛门进镜,9例行口-肛门进镜。通过双气囊小肠镜检查发现病灶28例,小肠病变检出率60.87%;胶囊内镜组70例患者中,29例发现小肠病变,小肠病变检出率为41.43%;双气囊小肠镜的病变检出率明显高于胶囊内镜,差异有统计学意义（P〈0.05）。双气囊小肠镜组和胶囊内镜组检出病变中,以克罗恩病最为常见（分别为9例和8例）,其次为非特异性肠炎。结合小肠镜检查结果、手术及临床上药物治疗效果,双气囊小肠镜组诊断疾病的准确率为82.14%（23/28）。其中除1例患者发生急性胰腺炎外,其余患者均未见严重的不良反应及出血、穿孔等严重的并发症。结论双气囊小肠镜对小肠病变所致的慢性腹痛阳性病变检出率高于胶囊内镜,诊断准确率较高,是一种安全可靠的检查手段;导致慢性腹痛的小肠疾病最常见病因为克罗恩病,其次为非特异性肠炎。     

34例不明原因疑小肠出血的病因诊断--推进式双气囊小肠镜与小肠钡灌检查对比研究

背景:不明原因小肠出血的病因诊断较为困难,不同检查手段的临床实用价值有待进一步探讨.目的:通过对不明原因疑小肠出血患者分别行推进式双气囊小肠镜和小肠钡灌检查,比较两者对小肠出血的病变检出率、病因诊断准确率和临床实用价值.方法:34例不明原因疑小肠出血患者分别接受推进式双气囊小肠镜和小肠钡灌检查.推进式双气囊小肠镜检查的进镜方式分为经口腔和经肛门两种,以首选进镜方式检查后未发现病灶者,择期改换进镜方式再行检查.小肠钡灌检查采用插管式稀钡灌注法.两项检查分别由消化科和放射科医师独立操作并诊断,最后进行汇总分析.结果:在34例行推进式双气囊小肠镜检查的患者中,首选从口腔进镜者22例,其中14例(63.6%)检出病灶;8例未发现病灶者择期再从肛门进镜检查,6例检出病灶.12例首选从肛门进镜者中8例(66.7%)检出病灶;4例择期再从口腔进镜检查,3例检出病灶.推进式双气囊小肠镜检查的病变整体检出率为91.2%(31/34);小肠钡灌检查的病变整体检出率为50.0%(17/34).推进式双气囊小肠镜检查发现的阳性病灶均经活检病理检查、手术探查以及临床治疗和随访结果证实,病因诊断准确率为100%(31/31);小肠钡灌检查的病因诊断准确率为48.4%(15/31).全麻下经口腔进镜推进式双气囊小肠镜检查的患者耐受性最佳,其后依次为非麻醉经肛门进镜、非麻醉经口腔进镜和小肠钡灌检查.所有受检者均未发生严重操作相关并发症.结论:经口腔和经肛门进镜方式结合能使推进式双气囊小肠镜完成对全小肠的检查,其在不明原因小肠出血的病因诊断方面明显优于小肠钡灌检查.小肠钡灌对肠腔狭窄和小肠肿瘤仍是一项较有价值的检查方法,同时可作为选择后续检查方法的筛选性手段.全麻下经口腔进镜推进式双气囊小肠镜检查是一项安全、易为患者接受、病变检出率和病因诊断准确率均较高的小肠疾病检查方法.     

双气囊小肠镜与胶囊内镜在小肠出血应用中的对比研究

目的比较双气囊小肠镜与胶囊内镜在小肠出血中的病变检出率、病因诊断率、耐受性和安全性,初步探讨双气囊小肠镜对小肠出血的内镜下治疗。方法2006年4月至2009年10月烟台毓璜顶医院消化内科收治的可疑小肠出血患者159例,其中81例患者行双气囊小肠镜检查,首选进镜方式分为经口或经肛2种,首选方式检查后未发现病灶者,日后改换进镜方式再行检查。对活动性出血病灶行内镜下止血治疗。另78例患者行胶囊内镜检查。两组患者分别由专门医师独立操作并诊断,最后进行汇总分析,对比双气囊小肠镜与胶囊内镜的临床应用价值。结果双气囊小肠镜组的病变检出率为95.06%,病因诊断率为82.72%,23例检查时见病变活动性出血,行内镜下止血治疗,21例止血成功,内镜止血成功率为91.30%;胶囊内镜组的病变检出率82.05%,病因诊断率为66.67%。双气囊小肠镜组的病因检出率及病因诊断率均显著高于胶囊内镜组,差异有统计学意义(P0.05)。在耐受性方面,胶囊内镜的耐受性最好,双气囊小肠镜的耐受性依次为:全麻下经肛进镜、全麻下经口进镜、非麻醉经肛进镜、非麻醉经口进镜。所有患者均未发生严重并发症。结论双气囊小肠镜对小肠出血的病因诊断明显优于胶囊内镜,并且可行内镜下止血治疗,是一项安全、有效的临床诊疗方法。     

双气囊小肠镜在68例小肠疾病诊断中的价值

目的 评价双气囊小肠镜对小肠疾病的诊断价值及安全性和耐受性.方法 2003年5月至2005年7月,对68例经常规检查无异常发现、疑患小肠疾病患者进行双气囊小肠镜检查,其中不明原因反复消化道出血39例、不完全性小肠梗阻7例、慢性腹痛14例、慢性腹泻8例.结果 68例患者中,36例经口进镜,25例经肛进镜,7例患者分别经口及经肛进镜检查.除3例因肠腔狭窄中止进镜外,其余病例均能检查1/2-3/4的小肠,7例患者结合经口及经肛途径完成全小肠检查.68例患者中41例检出阳性病灶,总阳性率为60.3%;其中不明原因消化道出血阳性率为62.6%（26/39）,不完全性小肠梗阻阳性5例,慢性腹痛阳性率为43%（6/14）,慢性腹泻阳性4例.除11例经口进镜者行异丙芬静脉全身麻醉外,其他经口及经肛进镜患者均能耐受整个检查,未出现出血、穿孔等严重并发症.结论 双气囊小肠镜是一种对小肠疾病诊断价值较高、安全可靠的检查手段.     

双气囊小肠镜诊断小肠克罗恩病的作用

目的 探讨双气囊小肠镜在小肠克罗恩病诊断中的作用.方法 对28例疑有小肠疾病者行双气囊小肠镜检查,分析双气囊小肠镜检查对小肠疾病,尤其是小肠克罗恩病的检出率、诊断准确性、患者依从性和不良反应发生率等.结果 28例中,小肠病变总检出率为71.43%(20/28),小肠克罗恩病检出率为21.43%(6/28),占所有检出病变的30%(6/20).6例双气囊小肠镜检查判断为克罗恩病者中,结合病理、治疗效果和临床随访,6例均确诊为克罗恩病,诊断准确率为100%(6/6).结论 双气囊小肠镜检查是一项针对小肠疾病安全、有效的检查方法 ,是诊断小肠克罗恩病较为理想的方法 .     

双气囊小肠镜鉴别诊断克罗恩病与小肠结核的价值

目的: 探讨双气囊小肠镜在克罗恩病与小肠结核鉴别诊断中的价值.方法:对38例临床怀疑小肠克罗恩病、小肠结核的患者进行小肠镜检查. 内镜诊断与病理和临床随访相结合, 评价双气囊小肠镜在两种疾病鉴别诊断中的应用价值.结果: 在38例患者中, 经病理和临床随访确诊克罗恩病18例, 小肠结核20例. 经双气囊小肠镜检查诊断为小肠克罗恩病14例, 检出率36.8%(14/38), 符合率77.8%(14/18);小肠结核为18例检出率47.4%(18/38), 符合率90.0%(18/20).结论:双气囊小肠镜是小肠克罗恩病与小肠结核鉴别诊断较为理想的方法, 并能对病变范围和严重程度作出正确的判断.     

双气囊小肠镜对小肠出血的诊断价值

目的探讨双气囊小肠镜对小肠出血的诊断价值及安全性。方法对2007年1月-2008年12月我院经常规检查怀疑为小肠出血的56例患者行双气囊小肠镜检查,分别接受经口或经肛双气囊小肠镜检查。主要分析检查时间、内镜插入深度、确诊情况和并发症发生率。结果所有患者无严重并发症,操作时间为35-150 min,平均（76±22）min;平均插入小肠长度经口和经肛分别为（254±126）cm和（182±103）cm。小肠病变中阳性发现46例（82.1%）,主要包括血管畸形、小肠溃疡、克罗恩病、慢性非特异性炎症、肿瘤、息肉及憩室等。结论双气囊小肠镜检查安全有效,为小肠出血疾病的诊断提供了新的手段。     

The immunoneuroendocrine role of melatonin

Abstract: A tight, physiological link between the pineal gland and the immune system is emerging from a series of experimental studies. This link might reflect the evolutionary connection between self-recognition and reproduction. Pinealectomy or other experimental methods which inhibit melatonin synthesis and secretion induce a state of immunodepression which is counteracted by melatonin. In general, melatonin seems to have an immunoenhancing effect that is particularly apparent in immunodepressive states. The negative effect of acute stress or immunosuppressive pharmacological treatments on various immune parameters are counteracted by melatonin. It seems important to note that one of the main targets of melatonin is the thymus, i.e., the central organ of the immune system. The clinical use of melatonin as an immunotherapeutic agent seems promising in primary and secondary immunodeficiencies as well as in cancer immunotherapy. The immunoenhancing action of melatonin seems to be mediated by T-helper cell-derived opioid peptides as well as by lymphokines and, perhaps, by pituitary hormones. Melatonin-induced-immuno-opioids (MHO) and lymphokines imply the presence of specific binding sites or melatonin receptors on cells of the immune system. On the other hand, lymphokines such as -γ-interferon and interleukin-2 as well as thymic hormones can modulate the synthesis of melatonin in the pineal gland. The pineal gland might thus be viewed as the crux of a sophisticated immunoneuroendocrine network which functions as an unconscious, diffuse sensory organ.     

Changes in connexin43, the gap junction protein of astrocytes, during development of the rat pineal gland

Abstract: The abundance of gap junctions between rat pineal astrocytes formed by connexin43 (Cx43) was studied during development. Levels and distribution of Cx43 were measured by immunoblotting and indirect immunofluorescence, respectively. The amount of Cx43 in cells located within the gland was low until about the 7th postnatal day and increased to adult values between the 14th and 21st days postpartum. Although astrocytes, recognized by their vimentin immunoreactivity, were scarce before birth, they were abundant by the 7th postnatal day suggesting that the low levels of Cx43 found at this age corresponded to a low expression of this protein. Localization of the immunoreactivity to Cx43 and vimentin showed a close correlation, indicating that mature or immature pineal astrocytes form gap junctions made of Cx43. Since Cx43 levels attained their adult values at about the time the innervation and the functional state of the gland reached maturity (2–3 weeks after birth), it is proposed that astrocyte gap junctions are involved in the function of the adult rat pineal gland.     

Conservative management of perforated duodenal diverticulum： A case report and review of the literature

Duodenal diverticula are a relatively common condition. They are asymptomatic, unless they become complicated, with perforation being the rarest but most severe complication. Surgical treatment is the most frequently performed approach. We report the case of a patient with a perforated duodenal diverticulum, which was diagnosed early and treated conservatively with antibiotics and percutaneous drainage of secondary retroperitoneal abscesses. We suggest this method could be an acceptable option for the management of similar cases, provided that the patient is in good general condition and without septic signs.     

Response of rat pineal melatonin to calcium, magnesium, and lithium is circadian stage dependent

Abstract: Herein we documented the response of pineal melatonin production to electrolytes known to be effective on pineal function in view of a possible circadian stage dependence. We studied the release of melatonin by perifused rat pineal glands at 2 different circadian stages corresponding to the middle of the light and dark periods, i.e., respectively, 7 and 19 HALO (Hours After Light Onset, L:D = 12:12). The initial efflux rates were, as expected, much higher in the perifusates of glands removed from rats sacrificed during the dark phase than of those removed during the light phase. After 3 hr of perifusion, melatonin release reached similar levels which were found constant up to the 8th hr of perifusion, whatever the circadian stage. Perifusion of the glands with physiological concentrations for the rat of calcium (5.2 mmol/1) and magnesium (1.34 mmol/1) resulted in a stimulatory effect on the pineal glands removed from rats sacrificed in the middle of the dark period (19 HALO), whereas no effects were observed on the pineal glands removed from rats sacrificed during the light (7 HALO). Lithium (0.28 and 0.55 mmol/1) was ineffective on melatonin release in pineal glands removed 7 and 19 HALO. Our results show differences in the initial efflux rates of melatonin and in the response of perifused pineal glands to calcium and magnesium according to the circadian stage.     

Presence of immunoreactive growth hormone and prolactin in the ovine pineal gland

Abstract: The use of antisera raised against bovine growth hormone (GH) and ovine prolactin (PRL) enabled the detection of related immunoreactive (ir) sequences of proteins in ovine pineal tissue. The isolation of PRL-like ir-material was accomplished using a 0.25 M ammonium sulphate (pH 5.5) extraction followed by ethanol precipitation, whereas the resulting 2.0 M ammonium sulphate (pH 7.0) precipitate contained a GH-like immunoreactivity. Gel chromatography of the GH-like immunoreactivity (Sephadex G-100) indicated the presence of several GH-like fragments ranging in the M_r range of 7,000 to 55,000. Analyses of the PRL-like ir-material found in pineal tissue on HPLC using a TSK 545-DEAE column led to the resolution into a single peak of immunoreactivity. A single peak of activity was also observed following chromatofocusing and hydrophobic interaction chromatography of the ir-peak from the TSK 545-DEAE column. The PRL-like ir-material inhibited the binding of [¹²⁵I]ovine PRL-S14 to anti-ovine PRL antibodies without showing an affinity for binding to anti-rat PRL or anti-bovine GH antibodies. Scatchard analysis of the binding of pineal PRL-like ir-material and pituitary ovine PRL-S14 to liver membranes from day-20 pregnant rats revealed similar affinity constants (K_a of 4.7 ± 0.2 × 10⁹ M^-1). In addition, the replication of Nb 2 Node rat lymphoma cells was stimulated by pineal PRL-like ir-material, an effect known to be specific for lactogenic hormones. The pineal PRL-like immunoreactivity appeared on sodium dodecyl sulfate polyacrylamide gels as a single major band of M_r 24,000. The functional status of PRL-and GH-like ir-material in the ovine pineal remains to be determined, but evidence is presented that the overall protein synthesis rate of the rat pineal responded to circulating concentrations of PRL.     

Microbiology of human immunodeficiency virus anorectal disease

PURPOSE: Individuals who are seropositive for the human immunodeficiency virus are at high risk for opportunistic infection and anorectal disorders. Little prospective information is available regarding anorectal pathogens in these patients. METHODS: One hundred sixty-three HIV-seropositive patients presented to the colorectal clinic between 1989 and 1992. Forty-seven (29 percent) patients were thought to have an infectious process and were prospectively studied using a standardized multiculture protocol. RESULTS: Mean age was 33 (range, 19–59) years. All were male; high-risk behavior accounted for 87 percent of HIV transmissions. Presenting complaints included anorectal pain (79 percent), pus per anum (28 percent), and blood per anum (26 percent). Examination revealed perianal tenderness (60 percent), condyloma (38 percent), perianal ulcers (38 percent), and anal fissures (34 percent). Sixty-six sets of cultures were performed; 28 patients had one set, 15 had two sets, and 4 had three sets. Thirty-two of these 47 patients (68 percent) had positive cultures including herpes (50 percent), cytomegalovirus (25 percent),Neisseria gonorrhoeae (16 percent), chlamydia (16 percent), acidfast bacilli (2 percent), and others (9 percent). Six of 32 patients with positive cultures had more than one organism cultured. Sixteen (50 percent) patients with positive cultures were treated medically, 8 (25 percent) were treated surgically and 8 (25 percent) were treated with both modalities. Sixty-one procedures were performed on 17 patients for condylomata. Eighteen patients had 20 procedures for abscesses, 50 percent of whom had positive cultures for other than common bowel flora; all improved. Fourteen patients underwent 33 procedures for perianal fistulas.Mycobacterium fortuitum was cultured from one patient who required 13 procedures for abscesses and fistulas. Forty-five (96 percent) patients were followed for an average of 12.5 months ±2.9 SEM (range, 1–94 months). Symptoms were improved or resolved in 22 of 32 (69 percent) patients with positive cultures and in 11 of 13 (84 percent) with negative cultures. CONCLUSIONS: Specific pathogens may often be identified in human immunodeficiency virus-seropositive patients with anorectal disorders if aggressively sought. Although patients without specific pathogens identified may be expected to improve with planned empiric treatment, positive identification allows more directed therapy.