急性心肌梗塞直接经皮冠状动脉腔内成形术

目的观察急性心肌梗塞（ＡＭＩ）患者应用直接经皮冠状动脉腔内成形术（ＰＴＣＡ）的安全性和有效性。方法对１１４例ＡＭＩ患者在发病１２小时内行直接ＰＴＣＡ术,其中有５例心原性休克的患者。梗塞相关血管（共１１５支血管）：左主干３例（２．６％）,前降支５６例（４８．７％）,回旋支１２例（１０４％）,右冠状动脉４４例（３８．５％）。ＴＩＭＩ血流：０级８２例（７１．３％）,１级１７例（１４．７％）,２级１６例（１４．０％）。结果１１１例患者手术成功,ＴＩＭＩ血流３级（９７．４％）。住院期间死亡３例（２．６％）,均为心原性休克患者,其中２例经紧急冠状动脉旁路移植术后死亡。８５例患者置入了冠状动脉内支架（７３．９％）。随访９５例患者,２例后期死于心力衰竭,９例出院后出现心肌缺血,其中８例再次行ＰＴＣＡ术。结论直接ＰＴＣＡ是治疗急性心肌梗塞的安全有效措施,成功率较高,并发症少;术后复发心肌缺血发生率较溶栓治疗低。     

急性心肌梗死溶栓后介入治疗的现状

对于ＳＴ段抬高的急性心肌梗死 (ＡＭＩ) ,快速有效地重建ＴＩＭＩ 3级血流对于提高患者的生存率具有至关重要的意义。目前 ,单独应用溶栓治疗 ,90ｍｉｎ时只有约 5 0 %～ 6 0 %患者可达到ＴＩＭＩ 3级血流[1 ] ;若同时联用血小板糖蛋白ＧＰⅡｂ Ⅲａ抑制剂 ,该比率则可提高至 70 %～ 75 % ;然而这种激进的药物再灌注疗法的安全性尚未得到证实。直接冠状动脉腔内成形术 (ＰＴＣＡ)虽不象溶栓疗法应用得那么广泛 ,但其重建ＴＩＭＩ 3级血流的比率能达到 85 %～ 95 % [2 ] 。从逻辑上讲 ,溶栓失败之后若能快速、安全而有效地进行补救性ＰＴＣ…     

急性心肌梗死冠脉内超声溶栓

目的研究冠脉内低频（２０ｋＨｚ）、高强度（４０Ｗ）超声溶栓在急性心肌梗死梗塞相关血管中的应用。方法急性心肌梗死患者１１例（前壁心梗６例,下壁心梗５例）,梗塞相关血管前向血流均为ＴＩＭＩ０级和１级（左前降支６例,左回旋支２例,右冠状动脉３例）,超声溶栓后行急诊经皮腔内冠状动脉成形术（ＰｒｉｍａｒｙＰＴＣＡ）。结果冠脉内超声溶栓对梗塞相关血管的开通率为７３％（血流达ＴＩＭＩ３级）,残余狭窄为（７２±１４）％,１１例全部立即行ＰＴＣＡ,超声溶栓失败的３例经ＰＴＣＡ后血管全部开通,ＰＴＣＡ术后残余狭窄为（２４±１２）％。冠脉内超声溶栓时,因超声探头折断,血管再度闭塞１例,冠脉轻度撕裂１例;无血管痉挛,无远端血管栓塞等并发症,也无室速、室颤等恶性事件发生。结论本研究表明冠脉内低频、高强度超声溶栓是安全、有效的血管开通方式,可应用于临床。     

冠状动脉完全闭塞病变的介入治疗

目的观察急性和慢性冠状动脉闭塞经皮冠状动脉腔内成形术（ＰＴＣＡ）治疗的效果。方法３２例患者共３８支完全闭塞血管进行了ＰＴＣＡ或ＰＴＣＡ＋支架治疗。结果１２例急性心肌梗塞（ＡＭＩ）其中４例直接和８例行补救性ＰＴＣＡ均成功（１２／１２,１００％）;２０例择期ＰＴＣＡ中１４例成功（７０％）。结论血管闭塞时间越长,ＰＴＣＡ成功率越低。本组病例无一例出现严重并发症,表明冠状动脉完全闭塞行ＰＴＣＡ＋支架治疗是安全有效的。     

急性心肌梗塞再灌注的血管造影监测：目标为TIMI3级灌注

四项研究证明梗塞区供血冠脉ＴＩＭＩ３级灌注者的临床转归优于ＴＩＭＩ０级，１级和２级者，因此溶栓和／或ＰＴＣＡ治疗应以ＴＩＭＩ３级灌注为目标。     

急性心肌梗死伴心源性休克的治疗

目的：本文观察早期冠状动脉再通及其他辅助治疗对急性心肌梗死（ＡＭＩ）合并心源性休克患者转归的影响。方法：对ＡＭＩ伴心源性休克的１７例患者进行回顾性研究，除外１例合并心室间隔穿孔。其余１６例患者分为药物组５例，仅应用药物治疗；介入组１１例接受溶栓，行经皮冠状动脉腔内成形术、行支架术、主动脉内球囊反搏、呼吸机辅助呼吸等治疗。介入组患者经冠状动脉造影后根据心肌梗死溶栓试验（ＴＩＭＩ）分级进一步分为再通组与未再通组。对药物组和介入组，再通组和未再通组住院期间病死率进行了比较。结果：药物组患者住院期间全部死亡，病死率１００％。介入组患者４例死亡，病死率３６％，较药物组明显降低（Ｐ＜０．０１）。介入组患者经冠状动脉造影未再通组（ＴＩＭＩ０～Ⅰ级）４例，３例死亡，病死率７５％，再通组（ＴＩＭＩⅡ～Ⅲ级）７例，死亡１例，病死率１４％，与未再通组比较病死率显著降低（Ｐ＜０．０１）。结论：早期冠状动脉再通，同时应用主动脉内球囊反搏，辅助呼吸等治疗将有效地降低ＡＭＩ伴心源性休克患者的病死率     

90分钟冠状动脉造影评价急性心肌梗塞血管开通及临床再通指标价值

通过经静脉溶栓开始后９０分钟冠状动脉造影（ＣＡＧ），观察国产尿激酶（天普洛欣，ＵＫＴＰ）静脉溶栓治疗急性心肌梗塞（ＡＭＩ）血管开通疗效，并评价临床再灌注标准的判断价值如何。方法：从ＵＫＴＰ多中心治疗ＡＭＩ１４０６例中，汇集其中所行冠状动脉造影（ＣＡＧ）共１２４例资料。结果提示：（１）１２４例ＡＭＩ患者，在溶栓开始后９０分钟时的梗塞相关血管的血流达ＴＩＭＩⅢ级者５２例（４１．９％）、Ⅱ级３８例（３０．７％），梗塞相关血管再开通率为７２．６％；（２）溶栓距起病时间愈早，具有愈高的开通趋势，但差异无统计学意义；（３）以ＣＡＧ为金标准，临床标准对血管开通判断敏感性为８８％，特异性为６９％，准确性为８３％。结论：ＵＫＴＰ静脉溶栓治疗ＡＭＩ血管开通疗效肯定，临床标准判断血管再通的敏感性较高，但特异性欠佳，有待提高。     

老年人急性心肌梗死直接经皮冠状动脉腔内成形术的治疗体会

目的评价老年人急性心肌梗死（ＡＭＩ）直接经皮冠状动脉腔内成形术（直接ＰＴＣＡ）的成功率及有效性。方法４２例发病在０．５～１０ｈ的老年ＡＭＩ患者接受了直接ＰＴＣＡ,术后随访半年。结果４０例患者中的４５支梗塞相关血管（ＩＲＡ）获得再通,成功率达９５．２％（４０／４２）,均达到ＴＩＭＩ－３级血流灌注,再通血管残余狭窄０％～２０％。５例合并左心功能不全（Ｋｉｌｉｐ分级Ⅱ～Ⅲ级）及３例合并心源性休克患者术后症状明显改善,住院期间１例死亡（病死率２．５％）。术后随访半年,６例直接ＰＴＣＡ成功患者（１５．０％）心绞痛复发,再次ＰＴＣＡ后血管再通。结论直接ＰＴＣＡ治疗老年人ＡＭＩ成功率高,病死率低,近期预后良好,是一种安全有效的治疗方法。     

直接经皮冠状动脉腔内成形术与溶栓治疗急性心肌梗塞近期疗效分析

目的比较直接经皮冠状动脉腔内成形术（ＰＴＣＡ）与药物溶栓治疗急性心肌梗塞（ＡＭＩ）患者住院期间的临床效果。方法在１０９例ＡＭＩ患者中，４５例患者接受直接ＰＴＣＡ治疗，６４例患者接受药物溶栓治疗。结果溶栓组梗塞相关血管（ＩＲＡ）再通的患者有４８例，再通率为７５％；直接ＰＴＣＡ组ＩＲＡ成功开通的患者有４４例，成功率为９７．８％。住院期间左室射血分数（ＥＦ）溶栓组为５４．１±１３．２，直接ＰＴＣＡ组为６４．２±１０．１，差异有显著性（Ｐ＜０．０５）；病死率分别为６．３％和２．２％，两组间差异无显著性（Ｐ＞０．０５）。进一步分析溶栓再通组与直接ＰＴＣＡ成功组的临床疗效，前者因再闭塞或缺血发作行择期ＰＴＣＡ的比率明显高于直接ＰＴＣＡ组（２７．１％ｖｓ０；Ｐ＜０．０５），但直接ＰＴＣＡ组左室ＥＦ仍显著高于溶栓再通组（６４．８±９．８ｖｓ５５．９±１２．６Ｐ＜０．０５）。住院期间再发梗塞，心肌缺血事件和心力衰竭例数溶栓再通组都有增加的趋势，但差异无显著性（Ｐ＞０．０５）。结论直接ＰＴＣＡ与溶栓治疗ＡＭＩ患者，前者可使ＩＲＡ充分有效地开通，能更好地改善患者心功能     

经皮腔内冠状动脉成形术治疗急性心肌梗塞12例分析

对１５例急性心肌梗塞，行紧急冠状动脉造影术，其中１２例进行了直接经皮腔内冠状动脉成形术（ＰＴＣＡ），１０例成功，２例因导引钢丝不到位而失败。其余３例因严重的３支血管病变而采取药物治疗。单支血管病变５例，两支以上血管病变者５例。急性下壁心梗５例（２例合并正后壁心梗），前壁心梗４例，高侧壁合并下壁心梗１例。有２例合并心源性休克，２例合并左心衰。梗塞相关血管段，右冠状动脉５段，前降支４段，回旋支１段。术后残留狭窄从９８％下降至２２％。冠脉血流从ＴＩＭＩ０～Ⅱ级全部达到Ⅲ级。     

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.     

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.     

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.     

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.