阿德福韦酯治疗慢性乙型肝炎患者的临床疗效观察

目的观察阿德福韦酯对慢性乙型肝炎患者的临床疗效。方法随机选择慢性乙型肝炎患者39例,其中12例为拉米夫定治疗后出现YMDD变异者。治疗48周,检测血清HBV DNA及HBV血清学标志物和ALT。结果治疗48周时,全组血清HBV DNA水平下降到1.3×103copies/ml,HBV DNA转阴率为56.4%,HBeAg转阴率为35.9%,HBeAg/抗-HBe转换率12.8%,ALT复常率为69.2%;YMDD变异组血清HBV DNA水平下降到7.9×103copies/ml,HBV DNA转阴率为50.0%,HBeAg转阴率为25.0%,HBeAg/抗-HBe转换率8.3%,ALT复常率为58.3%;HBV DNA>108copies/ml组,血清HBV DNA水平下降到6.8×103copies/ml,HBV DNA转阴率为0.0%,无HBeAg转阴和抗-HBe血清转换,ALT复常率为50.0%。结论阿德福韦酯是一有效的抗HBV药物。对HBV DNA野生株、拉米夫定耐药变异株均有抑制作用,HBV DNA基线水平低者疗效好,HBV DNA>108copies/ml者,疗效差。     

拉米夫定治疗慢性乙型肝炎36例临床观察

目的观察拉米夫定治疗慢性乙型肝炎的效果。方法36例患者,采取拉米夫定治疗,分别于12月和24个月时观察ALT复常率,HBV DNA转阴率及HBeAg转阴率,同时检测YMDD变异的情况。结果拉米夫定治疗1年的HBV DNA、HBeAg转阴率为别为54.5%、24.2%,HBeAg/抗HBe血清转换率12.1%,ALT复常率78.8%,YM-DD变异率5.6%。停药半年后血清HBV DNA复阳率为22.2%,YMDD变异率18.2%,ALT再次升高率33.3%,死亡1例。结论拉米夫定能够有效降低HBV DNA水平,随着用药时间的延长,YMDD变异的发生率逐渐升高,部份病例停药后出现病情反复或加重。     

拉米夫定治疗慢性乙肝病毒感染病人的疗效分析

目的：观察拉米夫定（Lamivudine）治疗慢性乙肝病毒（HBV）感染病人的疗效及影响因素。方法：60例慢性HBV感染病人予拉米夫定（100mg qd）治疗12个月。疗效评估包括血清HBV病毒学、血清HBV免疫学、血清生化学应答率。结果：治疗12个月后，HBV DNA PCR荧光定量检测总的血清HBV DNA转阴率为57.89％，HBeAg/抗-HBe血清转换率为6.25％，ALT复常率为68.89％。其中，（1）血清ALT异常、HBeAg阳性组病人的荧光定量检测HBV DNA转阴率为55.56％，HBeAg/抗-HBe血清转换率为8.33％，ALT恢复正常率为63.89％；完全应答率为8.33％，部分应答率为75.00％，无应答率为16.67％。（2）ALT正常、HBeAg阳性组的12例病人中，仅有4例病人的血清HBV DNA转阴，无1例发生HBeAg/抗-HBe血清转换。（3）ALT异常、HBeAb阳性组的9例病人中，8例病人的HBV DNA转阴同时伴ALT复常。结论：本组病例分析结果表明，拉米夫定可以有效地抑制血清HBV的复制，改善肝功能。机体免疫状况对拉米夫定抗病毒治疗有较大影响，治疗前ALT水平是预测疗效的重要指标。对ALT异常的慢性HBV感染病人，HBeAg阴性者似乎比HBeAg阳性者有更好的治疗反应，可能更适合用拉米夫定治疗。病人对拉米夫定普遍耐受性良好。     

拉米夫定联合α-干扰素治疗慢性乙型肝炎对HBV YMDD变异的影响

目的探讨α-干扰素联合拉米夫定治疗慢性乙型肝炎对HBV YMDD变异的影响。方法40例患者被随机分为治疗组20例，给予口服拉米夫定100mg／d，同时予以αlb-干扰素5MU／d，肌肉注射，两周后改为隔日一次，疗程1年；对照组20例，单用拉米夫定100mg／d，疗程1年。结果疗程结束时，两组患者HBV YMDD变异率分别为15．0％和30．0％（P〈0．05），HBeAg血清转换率分别为40．0％和35．0%（P〉0．05）。治疗组发生YMDD变异率明显低于对照组。结论拉米夫定联合干扰素治疗慢性乙型肝炎，不能提高HBeAg血清转换率，但可降低YMDD变异率。     

拉米夫定与α干扰素联合治疗慢性乙型肝炎

目的 观察拉米夫定(LAM)联合干扰素α1b(IFNα1b)治疗慢性乙型肝炎的近期疗效和安全性。方法 HBV DNA和HBeAg均阳性的90例慢性乙型肝炎患者，按1：1：1的比例进入三个不同的治疗组。联合治疗组：用IFNα1b 5MU，隔日肌肉注射，及口服LAM 100mg／d，共6个月，随后单用口服LAM 100mg／d6个月；LAM组：口服LAM 100mg／d共12月：IFN组：IFN α1b 5MU，隔日肌肉注射，共6个月。结果 治疗结束时，HBV DNA转阴率，联合治疗组为90．0％，LAM组为80％，IFN组为46．7％。丙氨酸氨基转移酶(ALT)复常率，联合治疗组为90．0％，LAM组为80．0％，IFN组为53．3％。HBeAg／抗HBe血清转换率，联合治疗组为46．7％，LAM组为13．3％，IFN组为33．3％。联合治疗组患者治疗结束时无一例检测到YMDD变异。结论 联合治疗组对HBV DNA抑制作用及ALT复常率高于单用干扰素组，与单用拉米夫定组接近。HBeAg／抗HBe血清转换率高于拉米夫定组，与单用干扰素组相近。初步显示联合治疗组发生YMDD变异较少。     

拉米夫定联合胸腺肽治疗慢性乙型肝炎的疗效观察

目的 评价拉米夫定联合胸腺肽治疗慢性乙型肝炎(CHB)的近、远期疗效和安全性，探讨两者联合治疗的协同作用。方法 将207例HBV DNA及HBeAg阳性的CHB患者随机分为甲乙两组，甲组采用拉米夫定和胸腺肽联合治疗，乙组单用拉米夫定治疗。胸腺肽15mg口服，每日1次，疗程6个月。两组拉米夫定治疗均为100mg，每日1次，口服，其中甲组92例(92／124)、乙组70例(70／83)用药超过12个月。两组在治疗6个月、12个月时分别进行疗效评价，治疗结束后继续随访12个月。结果 治疗6个月时，甲乙两组ALT复常率分别为87．1％和74．7％，甲组显著高于乙组(P＜0．05)，但两组HBV DNA阴转率、HBeAg阴转率及HBeAg／抗—HBe血清转换率均无显著性差异(P＞0．05)。治疗12个月时，甲乙两组ALT复常率和HBV DNA阴转率无显著性差异(P＞0．05)，甲组HBeAg阴转率及HBeAg／抗-HBe血清转换率均显著高于乙组(P＜0．05)。随访结束时，甲组从量复常率、HBV DNA阴转率、HBeAg阴转率及HBeAg／抗—HBe血清转换率均显著高于乙组(P＜0．05)。结论 拉米夫定与胸腺肽联合治疗CHB，疗效明显优于单用拉米夫定，是CHB患者安全有效的治疗方法。     

拉米夫定治疗HBeAg阳性慢性乙型肝炎患者7年结果总结

目的 评估拉米夫定治疗乙型肝炎5年的长期疗效和安全性,以及对病毒变异发生率的影响.方法 429例HBsAg,HBeAg阳性的慢性乙型肝炎患者,先按3:1随机双盲分成拉米夫定组和安慰剂组,治疗共12周,以后所有患者均服拉米夫定100 mg/d,共5年.结果 服药治疗5年后,血清HBV DNA仍持续降低,在YMDD变异患者中则增高,中位值为107.5 Meq/nd.HBeAg阴转率和HBeAg/抗Hbe血清转换率分别为28.6%和27.5%.与治疗前ALT水平有显著关系.治疗前ALT基础值＞2×ULN(正常值上限)和＞5×ULN者,5年时HBeAg阴转率和血清转换率均为50%和67%.治疗前ALT增高的患者,5年治疗后,ALT的复常率为58%,治疗前ALT正常的患者,67.0%仍正常.1,2,3,4和5年的YMDD变异率分别为12.1%,49.7%,70.5%,67.0%和70.8%.发生变异后,HBV DNA大多仍可有一定程度抑制,在基线以下少部分可回升.在YMDD变异患者,继续有HBeAg阴转和血清转换,分别为18.4%和17.8%,低于非变异组患者.疗程中ALT增高＞5×ULN有22例,其中变异者16例,非变异者6例,经处理后均缓解.在5年治疗期间,不良反应24.8%.结论 长期应用拉米夫定可持久抑制HBV复制和促进血清转换,耐受性和安全性好,选择适合的患者,可取得最佳疗效.     

拉米夫定治疗慢性乙型肝炎过程中HBV YMDD变异与临床

目的:探讨拉米夫定治疗慢性乙型肝炎过程中HBV YMDD变异与临床的关系。方法:对应用拉米夫定治疗的19例慢性乙型肝炎患者进行肝功能、乙肝病毒血清学标志物、HBV YMDD变异检测,个别病例进行肝组织病理学检查。结果:ALT异常率为47％,HBeAg血清转换率为15.8％,HBV YMDD变异发生率为25％,肝组织中HBsAg和HBcAg依然阳性。结论:运用拉米夫定治疗慢性乙型肝炎6个月后可出现HBV YMDD变异,随着治疗时间延长,其变异发生率越高;该药远期降酶作用不够理想;HBeAg血清转换率不高;肝组织内仍处于炎症状态。     

拉米夫定联合苦参素治疗HBeAg阳性慢性乙型肝炎70例

[目的]观察拉米夫定联合苦参素治疗HBeAg阳性慢性乙型肝炎(CHB)的临床疗效。[方法]将140例CHB患者随机分为2组,治疗组70例给予拉米夫定联合苦参素治疗;对照组70例单服拉米夫定疗程均1 a。比较2组治疗后血清丙氨酸氨基转移酶(ALT)、天冬氨酸转氨酶(AST)复常率,HBeAg/抗-HBe转换率,HBeAg、HBV DNA转阴率,YMDD突变率。[结果]治疗组治疗后12个月血清HBeAg/抗-HBe转换率、HBeAg转阴率、YMDD突变率分别为35.7%、47.1%、12.9%;对照组分别为17.1%、27.1%2、8.6%,2组差异有统计学意义(P0.05),2组ALT、AST的复常率比较均P0.05,HBV DNA转阴率P0.05。[结论]拉米夫定联合苦参素治疗HBeAg阳性CHB疗效优于单用拉米夫定治疗。     

阿德福韦酯初始治疗慢性乙型肝炎疗效观察

目的观察阿德福韦酯治疗慢性乙型肝炎患者的临床疗效及不良反应。方法选择慢性乙型肝炎患者433例,分为HBeAg（＋）组270例,HBeAg（-）组163例,口服阿德福韦酯10mg,1／d,连续服用。检测肝功能指标ALT、AST、TBIL及HBV血清学标志物HBV DNA、HBVM。结果随治疗时间的延长,2组患者血清ALT复常率、HBV DNA阴转率或HBeAg血清转换率均逐渐升高,HBV DNA下降幅度逐渐增大。在12个月时2组ALT复常率分别为77．4％和74．7％,HBV DNA阴转率为56．5％和54．2％,HBV DNA下降幅度3．79log10和2．96log10,HBeAg（＋）组HBeAg血清转换率为25．6％;在24个月时2组ALT复常率分别为92．9％和85．7％,HBV DNA阴转率分别为72．6％和66．7％,HBV DNA下降幅度分别为3．90log10和3．14log10,HBeAg（＋）组HBeAg血清转换率为33．3％。2组临床疗效相似,各指标未见统计学差异。所有病例均未见严重不良反应。结论阿德福韦酯是一种有效的抗HBV药物,对HBeAg（＋）和HBeAg（-）慢性乙型肝炎均能有效控制病毒复制,改善肝功能,促使HBeAg血清学转换。长期用药安全性及耐受性良好。     

Three layer functional model and energy exchange concept of aging process

Relying on a certain degree of abstraction, we can propose that no particular distinction exists between animate or living matter and inanimate matter. While focusing attention on some specifics, the dividing line between the two can be drawn. The most apparent distinction is in the level of structural and functional organization with the dissimilar streams of ‘energy flow’ between the observed entity and the surrounding environment. In essence, living matter is created from inanimate matter which is organized to contain internal intense energy processes and maintain lower intensity energy exchange processes with the environment. Taking internal and external energy processes into account, we contend in this paper that living matter can be referred to as matter of dissipative structure, with this structure assumed to be a common quality of all living creatures and living matter in general. Interruption of internal energy conversion processes and terminating the controlled energy exchange with the environment leads to degeneration of dissipative structure and reduction of the same to inanimate matter, (gas, liquid and/or solid inanimate substances), and ultimately what can be called ‘death.’ This concept of what we call dissipative nature can be extended from living organisms to social groups of animals, to mankind. An analogy based on the organization of matter provides a basis for a functional model of living entities. The models relies on the parallels among the three central structures of any cell (nucleus, cytoplasm and outer membrane) and the human body (central organs, body fluids along with the connective tissues, and external skin integument). This three-part structural organization may be observed almost universally in nature. It can be observed from the atomic structure to the planetary and intergalactic organizations. This similarity is corroborated by the membrane theory applied to living organisms. According to the energy nature of living matter and the proposed functional model, the decreased integrity of a human body's external envelope membrane is a first cause of the structural degradation and aging of the entire organism. The aging process than progresses externally to internally, as in single cell organisms, suggesting that much of the efforts towards the restoration and maintenance of the mechanisms responsible for structural development should be focused accordingly, on the membrane, i.e., the skin. Numerous reports indicate that all parts of the human body, like: bones, blood with blood vessels, muscles, skin, and so on, have some ability for restoration. Therefore, actual revival of not only aging tissue of the human body's membrane, but the entire human body enclosed within, with all internal organs, might be expected. We assess several aging theories within the context of our model and provide suggestions on how to activate the body's own anti-aging mechanisms and increase longevity. This paper presents some analogies and some distinctions that exist between the living dissipative structure matter and inanimate matter, discusses the aging process and proposes certain aging reversal solutions.     

Unusual responses of nocturnal pineal melatonin synthesis and secretion to swimming: Attempts to define mechanisms

Abstract: The effect of swimming at night on rat pineal melatonin synthesis was compared with that of light exposure at night. Rats were forced to swim at 0030 hr (lights out at 2000 hr) and sacrificed by decapitation 15 and 30 min later, immediately after swimming. Other groups of animals were exposed to white light (650μW/cm²) for 15 and 30 min at same time. Swimming caused a rapid and highly significant drop in the melatonin content in the pineal gland; however, the activity of N-acetyltransferase (NAT), the supposed rate limiting enzyme in the melatonin production, was not changed. Despite the drop in pineal melatonin levels, serum concentrations of the indole remained elevated in the rats that swam. In contrast, melatonin levels in the pineal and serum of light exposed rats fell precipitously, accompanied by a significant suppression of NAT activity. Since we anticipated that the strenuous exercise associated with swimming may induce release of artrial natriuretic peptide (ANP) from the heart, which in turn could cause the release of pineal melatonin, in a second study we injected physiological saline intravenously to stretch the cardiac muscle and release ANP. Three milliliters of normal saline was injected during the day into the jugular vein of anesthetized rats that were pretreated with isoproterenol to stimulate pineal melatonin production. Animals were killed 15 min after the saline injection, and pineal NAT activity and pineal melatonin levels were measured. The saline injections caused no alteration in the elevated levels of either NAT or melatonin. These data suggest that the disparity in pineal NAT activity (which was high) and pineal melatonin (which was low), in animals swum at night, may not be caused by ANP which is released during strenuous exercise such as swimming.     

Melatonin and photoperiodic time measurement: Seasonal breeding in the sheep

Abstract: Well-established circadian physiology supports the view that photoperiodic time measurement utilizes the coincidence between the presence of light and a photosensitive phase of a 'biological clock' to alter reproductive status—the so-called external coincidence model of seasonal breeding. In this review, we examine the mechanism whereby photoperiod interacts with presumed suprachiasmatic nuclei activity to allow endogenous melatonin to normally synchronize reproductive activity to the optimal time of year. The Romney Marsh sheep is particularly explored as an experimental model. It is suggested that the on/off activity of seasonal reproduction may be a robust mechanism able to be predictably manipulated by the judicious use of the light/dark cycle and exogenous melatonin, but firmly based on circadian principles.     

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.     

Serological survey of HIV and syphilis in pregnant women in Madagascar

Objectives Peripartal transmission of human immunodeficiency virus (HIV) and Treponema pallidum, the causative agent of syphilis, leads to severe consequences for newborns. Preventive measures require awareness of the maternal infection. Although HIV and syphilis testing in Madagascar could be theoretically carried out within the framework of the national pregnancy follow‐up scheme, the required test kits are rarely available at peripheral health centres. In this study, we screened blood samples of pregnant Madagascan women for HIV and syphilis seroprevalence to estimate the demand for systemic screening in pregnancy. Methods Retrospective anonymous serological analysis for HIV and syphilis was performed in plasma samples from 1232 pregnant women that were taken between May and July 2010 in Ambositra, Ifanadiana, Manakara, Mananjary, Moramanga and Tsiroanomandidy (Madagascar) during pregnancy follow‐up. Screening was based on Treponema pallidum haemagglutination tests for syphilis and rapid tests for HIV, with confirmation of positive screening results on line assays. Results Out of 1232 pregnant women, none were seropositive for HIV and 37 (3%) were seropositive for Treponema pallidum. Conclusions Our findings are in line with previous studies that describe considerable syphilis prevalence in the rural Madagascan population. The results suggest a need for screening to prevent peripartal Treponema pallidum transmission, while HIV is still rare. If they are known, Treponema pallidum infections can be easily, safely and inexpensively treated even in pregnancy to reduce the risk of transmission.     

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.     

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.