自体外周血造血干细胞移植治疗难治性系统性红斑狼疮

目的:探讨自体外周血造血干细胞移植(APBSCT)治疗难治性系统性红斑狼疮(SLE)的临床疗效。方法:用APBSCT治疗4例难治性SLE。干细胞动员应用环磷酰胺(CTX)4g/m2,分两天应用和粒细胞集落刺激因子(G-CSF)5~10μg/kg·d-1;预处理方案包括CTX(50mg/kg·d-1,-6、-5、-4、-3d),抗胸腺细胞球蛋白(ATG15~20mg/kg·d-1,-2、-1、 1、 2d)。结果:4例患者均获得造血重建,中性粒细胞>0.5×109/L,血小板>20×109/L的中位数时间分别是9d,10d;SLE的临床表现明显减轻,尿蛋白减少或消失,自身抗体转阴或滴度减低,泼尼松用量<10mg/d;无移植相关死亡。结论:APBSCT治疗难治性SLE近期疗效显著,造血重建恢复迅速,安全有效,远期疗效尚需进一步观察。     

自体外周血造血干细胞移植治疗系统性红斑狼疮的临床观察

目的 探讨自体外周血造血干细胞移植(APBSCT)治疗难治性系统性红斑狼疮(SLE)的临床疗效和安全性.方法 10例难治性SLE患者接受APBSCT治疗,应用环磷酰胺(CTX)2～4 g/m2和粒细胞集落刺激因子5～10 μg·kg-1·d-1行外周血造血干细胞动员;预处理包括CTX(50 mg·kg-1·-1,-6～-3 d)和抗胸腺细胞球蛋白(ATG,15～20 mg·kg-1·d-1,-2 d、-1 d、1 d、2 d).患者输注的CD34+细胞＞2×106/kg.评估治疗前后临床表现、SLE疾病活动指数(SLEDAI)和免疫指标的变化.结果 APBSCT后10例SLE患者的临床症状缓解,SLEDAI评分降低,均获得造血重建,中性粒细胞＞0.5×109/L的中位数时间为9.5 d,血小板＞20×109/L中位数时间是11 d;尿蛋白减少或消失,抗核抗体滴度减低或转阴,补体水平升高;移植相关的并发症有:2例败血症,2例巨细胞病毒感染,1例出现肾毒性,3例急性左心衰竭,3例心律失常,无移植相关死亡.结论 APBSCT能够改善SLE患者的疾病活动和免疫学指标,是一种有效的治疗难治性SLE的方法,但远期疗效需进一步观察.     

-80 ℃低温保存自体外周血干细胞移植治疗多发性骨髓瘤的临床研究

目的探讨-80℃低温保存自体外周血干细胞移植(APBSCT)治疗多发性骨髓瘤(MM)的有效性和安全性。方法对10例MM患者进行APBSCT治疗。采用环磷酰胺(CTX)+粒细胞集落刺激因子(G-CSF)方案动员干细胞,CS-3000血细胞分离机采集外周血干细胞并保存于-80℃冰箱;用马法兰200 mg/m2方案预处理后,解冻回输冻存的干细胞。结果 (1)动员后获得单个核细胞数(MNC)中位数为4.54(2.31~9.80)×108/kg;CD34+细胞数中位数为4.17(2.03~7.76)×106/kg。(2)移植后10例患者均获得造血重建,中性粒细胞计数0.5×109/L、血小板计数20×109/L的中位时间分别是13.3(9~16)d、15(11~19)d。(3)移植后3个月完全缓解(CR)8例,非常好的部分缓解(VGPR)2例。中位随访54.6(3~111)月,生存8例(CR5例,VGPR 3例),其中无进展生存6例。复发4例中再次治疗维持CR 2例,多次复发死亡2例。(4)移植的并发症是感染,无移植相关死亡。结论 -80℃低温保存APBSCT治疗MM安全有效,近期疗效好,移植后需要长期维持治疗。     

APBSCT治疗淋巴系统恶性血液病临床研究

采用自体外周血造血干细胞移植(APBSCT)治疗5例恶性淋巴瘤和2例急性淋巴细胞白血病(ALL).干细胞动员采用大剂量VP16或MOEP方案 G-CSF;经过CVB或CVBA方案预处理后行APBSCT治疗.结果 全部病例均成功获得造血重建,移植后外周血中性粒细胞达到绝对数(ANC)≥0.5×109/L平均时间为11 d,Plt达到≥20×109/L平均时间为16 d.随访1～8个月,无复发及死亡病例.提示APBSCT是治疗淋巴系统恶性血液病安全、有效的方法.     

自体外周血造血干细胞移植治疗系统性红斑狼疮

目的：探讨自体外周血造血干细胞（APBSCT）治疗系统性红斑狼疮（SLE）的临床效果。方法：采集经用环磷酰胺（CTX）2000mg/m^2静脉注射和粒细胞集落刺激因子（G－CSF）250ug/d皮下注射动员的外周血造血干细胞，预处理CTX48mg.kg^-1.d^-1，连续静脉滴注3d，回输干细胞后用抗胸腺细胞球蛋白（ATG）13．5mg/kg，体内去细胞，分3d静脉滴注，用G－CSF刺激升高白细胞，观察APBSCT前后免疫指标与临床表现，结果：APBSCT后患者的临床表现基本消失，免疫指标正常，抗体转阴，结论：APBSCT治疗SLE有较好的疗效，远期疗效还需长期随访观察。     

自体外周血造血干细胞移植治疗系统性红斑狼疮的初步观察

目的探讨自体外周血造血干细胞移植(APBSCT)治疗系统性红斑狼疮(SLE)的可行性及临床效果。方法对8例女性难治性SLE病人进行APBSCT。采集的干细胞的单个核细胞计数平均为1.6×108/kg[(0.07～2.6)×108/kg]。预处理方案为环磷酰胺(50mg·kg-1·d-1,-5～-2d)静脉滴注及兔抗人淋巴细胞免疫球蛋白(10mg·kg-1·d-1,-3～-1d)静脉滴注。从移植前后皮肤红斑的变化,尿的改变,SLE相关的免疫指标的变化,移植后造血重建情况,移植的并发症等方面进行评价。结果8例病人均获得成功植入,外周血白细胞总数>1.0×109/L的平均时间为9.5d,中性粒细胞计数>0.5×109/L的平均时间为10d,白细胞总数恢复正常的平均时间为14d,血小板计数>50×109/L的平均时间为30d,血红蛋白含量平均在移植后第28天升至100g/L。移植后SLE临床症状均消失,尿蛋白转阴,自身抗体大部分转阴。移植相关并发症中,均出现血清病样预处理反应,2例出现严重的低血压;4例有出血性膀胱炎;2例出现败血症;4例发生霉菌感染;2例发生间质性肺炎。随访时间2个月～2.5年。结论APBSCT治疗SLE有较好的近期疗效,但观察病例及时间有限,远期疗效还需更长时间的观察。对药物治疗难以奏效的SLE病例,该法不失为一种更佳的选择。     

自体外周血造血干细胞移植治疗多发性骨髓瘤

目的:评价环磷酰胺(Cy)联合足叶乙苷(VP-16)和粒细胞集落刺激因子(G-CSF)方案干细胞动员效果及自体外周血造血干细胞移植(APBSCT)治疗多发性骨髓瘤(MM)的临床疗效。方法:8例MM患者给予Cy联合VP-16化疗加G-CSF动员造血干细胞,Cy 1 000-1 200 mg／(m2·d)×2 d,VP-16 500 mg／d×2 d,白细胞(WBC)<1．0×109／L后给G-CSF 300μg／d×6-9 d。当WBC>4．0×109／L,血小板>50×109／L后采集APBSC。采用2种预处理方案,马法兰200 mg／m2或140 mg／m2联合VP-16 1 000 mg及司莫司汀200 mg。结果:动员后采集的单个核细胞(MNC)为6．23(4．27-12．78)×108／kg;CD34 细胞为4．75(1．69-23．15)×106／kg;粒细胞-巨噬细胞集落形成单位(CFU-GM)集落为84．5(5．4-300．4)个／104细胞。APBSCT后中性粒细胞恢复至>0．5×109／L的中位时间 9．5 d。在8例患者中,6例获得完全缓解,1例部分缓解,1例未缓解。中位生存期46(23-54)个月,中位无病生存期12(0-39)个月。结论:Cy联合VP-16加G-CSF作为动员方案,能够采集足够量的APBSC;APBCST治疗MM安全有效。     

HLA半相合非清髓性造血干细胞与间充质干细胞共移植治疗重症再生障碍性贫血1例

目的:观察HLA半相合非清髓性造血干细胞与间充质干细胞(MSC)共移植治疗重症再生障碍性贫血(SAA)的疗效及安全性。方法:1例24岁男性SAA患者。应用非清髓性预处理方案,进行HLA半相合异基因外周血造血干细胞和MSC共移植。移植rhG-CSF动员的供者外周血单个核细胞9.22×108/kg,CD34 细胞8.56×106/kg,及体外扩增培养的供者骨髓MSC2.12×105/kg。结果:移植后 12d中性粒细胞数>0.5×109/L, 21d WBC4.5×109/L,Hb99g/L,PLT108×109/L。经HLA配型,红细胞亚型和VNTR检测,为供者型完全嵌合体。随访14个月,无急、慢性移植物抗宿主病(GVHD)发生。结论:HLA半相合非清髓性造血干细胞与MSC共移植治疗SAA是安全有效的方法。     

自体外周血造血干细胞移植治疗恶性淋巴瘤

目的 :报告 7例恶性淋巴瘤在自体外周血造血干细胞移植 (APBSCT)支持下接受超大剂量放、化疗的治疗经验 ,评价所用外周血造血干细胞 (PBSC)动员方案的动员效果 ,预处理方案的疗效和耐受性 ,以及移植后造血重建情况。方法 :7例淋巴瘤患者中 ,1例霍奇金病 ,6例非霍奇金淋巴瘤。动员方案为MOEP/CMOP化疗联合rhG -CSF ,预处理采用经典的超大剂量环磷酰胺 (CTX)化疗联合全身放疗 (TBI)。结果 :APBSCT动员后获得到单个核细胞 4.2 (2 .7～ 6 .1)× 10 8/kg,回输单个核细胞 3.7(2 .5～ 5 .3)× 10 8/kg ,中性粒细胞计数恢复到 >0 .5× 10 9/L的时间和血小板 >5 0× 10 9/L的时间分别平均为第 11.6天和第 14.6天。毒副作用主要为消化道反应。结论 :APBSCT治疗恶性淋巴瘤效果肯定 ,采用MOEP/CMOP联合rhG -CSF动员以及经典CTX加TBI方案预处理 ,安全可靠 ,治疗效果良好。     

儿童难治性自身免疫性疾病自体外周血干细胞动员采集和分选的临床研究

目的 探讨儿童难治性自身免疫性疾病进行自体外周血干细胞动员采集的安全性和CD34+细胞分选纯化的可行性及其临床意义.方法 8例儿童难治性自身免疫性疾病,包括4例系统性红斑狼疮、2例皮肌炎,1例幼年型类风湿关节炎和1例多发性硬化,予行CD34+细胞纯化的自体外周血干细胞移植.首先采用环磷酰胺(CTX)联合粒细胞集落刺激因子(G-CSF)方案动员外周血干细胞,然后采用CS-3000血细胞分离机采集外周血,通过CliniMACS细胞分选仪分选自体外周血CD34+细胞,将其用保养液配置冻存于-80℃冰箱.采用非清髓内去除T的预处理方案,即卡氮芥+足叶乙苷+阿糖胞苷+马法兰+抗胸腺球蛋白(ATG)或CTX+ATG或CTX+马法兰+ATG,于第0天回输自体外周血CD34+细胞.结果 儿童能够耐受自体外周血干细胞动员采集过程,无动员相关死亡,动员后获得的单个核细胞数和CD34+细胞数的平均值分别为8.35×108/kg和7.92×106/kg,纯化后的白体外周血CD34+和CD3+细胞数的平均值分别为6.28×106/kg和0.71×105/kg.回输后中性粒细胞和血小板的植入中位时间分别为+11d和+15 d.结论 经CTX联合G-CSF方案可动员出足量的外周血干细胞,经CS-3000血细胞分离机采集可获得足够的单个核细胞,在动员过程中原发病无明显进展恶化,患儿能耐受动员方案,采集过程顺利安全;经CliniMACS细胞分选仪分选的自体外周血CD34+细胞纯度高,移植后造血恢复;采用CD34+细胞纯化的自体外周血移植治疗是常规治疗无效的儿童难治性自身免疫性疾病的可选择治疗措施之一.     

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.