Study on Metabolites of Aconitum Alkaloids in Human Urine

TheaconitebelongstoplantsofgenusAconituminfamilyofRanunculaceaandhavenotableclinicalfunctionsintreatingrheumaticarthritis ,heartfailure ,etc .However,accidentsofaconitine(fromaconite)poisoningfrequentlyoccurtomanypeopletakingtheseherbs .Theplantsofthisfamilycontainaconitine ,mesaconitine ,hypaconitineandotheraco nitumalkaloids .Theyarehighlytoxic ,andtheirtreatmentdoseapproachestothetoxicdoseorlethaldose .Duringtheperiodfrom 1989- 1995 ,morethan 30casesofpoisoningcausedbyaconitineinsometradit…     

乌头碱中毒所致心律失常20例抢救体会

本文报道了我院于1966年11月～1983年4月共抢救乌头碱中毒所致各种心律失常20例,全部治愈,无1例死亡,抢救方法如下: 1.立即洗胃,导泻及大量静脉输液,以加速毒物从体内排泄。2.在无特殊拮抗剂的情况下,乌头碱中毒所引起的各种缓慢型心律失常,主要为迷走神经强烈兴奋所致,应选用阿托品,以阻断迷走神经对窦房结及房室结兴奋性的抑制。对于窦房结功能低下而出现的室性心律失常,应用阿托品亦可使其消失。3.患者若出现呼吸抑制,休克或心脏停搏者,均提示中毒严重,应紧急治疗。4.室性心律失常,应立即静脉注射利多卡因。5.乌头碱中毒在体内无蓄积作用,如用阿托品治疗,心律失常消失后,即可停用,以免发生中毒。     

乌头碱中毒及双黄连干预对心肌雷诺定受体表达的影响

目的：研究乌头碱中毒及双黄连注射液干预对心肌雷诺定受体(rynanodine receptor 2,RyR2)表达的影响,探讨双黄连对抗乌头碱致心律失常毒性的作用机制。方法：将52只SD大鼠随机分成3组：乌头碱组(A组,n=20),双黄连组(B组,n=20)和对照组(C组,n=12)。A,B两组先予乌头碱0.3 mg/kg灌胃,30min后A组予生理盐水腹腔注射,B组予双黄连100mg/kg腹腔注射;对照组两次均予生理盐水处理,连续给药10 d。于第1,3,6,10 天记录大鼠心电图变化并进行心律失常评分,采用免疫荧光染色及实时定量PCR技术检测大鼠心肌组织RyR2蛋白及基因的表达变化。结果：各时间点B组的心律失常评分均较A组低,差异有统计学意义(P<0.05或P<0.01);第1天A组心肌RyR2蛋白及RyR2 mRNA表达即较B,C两组增加,但差异无统计学意义(P>0.05);第3,6,10天A组RyR2蛋白及RyR2 mRNA表达较B,C两组均显著增加,差异有统计学意义(P<0.01)。结论：双黄连可有效治疗乌头碱中毒引起的心律失常,其机制可能与降低乌头碱引起的RyR2异常高表达有关。     

415 nm蓝光联合5%过氧苯甲酰凝胶治疗轻中度寻常性痤疮的疗效

 目的 观察415 nm蓝光联合5%过氧苯甲酰凝胶治疗轻中度寻常性痤疮的临床疗效与安全性。方法 选取武警湖北总队医院2019-03至2020-09轻中度寻常性痤疮90例,随机分为3组,每组30例。联合组同时予415 nm蓝光照射联合5%过氧苯甲酰凝胶外用;蓝光组和药物组分别予415 nm蓝光照射和5%过氧苯甲酰凝胶外用。3组均在治疗8周后判定疗效。结果 治疗8周后联合组有效率为83.3％。蓝光组和药物组有效率分别为30％和56.7％,与联合组有效率比较,差异均有统计学意义。治疗过程中不良反应少见且患者均可耐受。结论 415 nm蓝光联合5%过氧苯甲酰凝胶治疗轻中度寻常性痤疮疗效显著,不良反应少。     

采用傅里叶变换红外光谱和HPLC法分析附子炮制品黑顺片和白附片差异

目的 基于成分分析探讨黑顺片和白附片的差异。方法 基于傅里叶红外光谱（fourier transforms infrared,FTIR）和HPLC,结合化学计量学方法,对黑顺片和白附片的整体化学成分进行研究,并通过独立样本t检验对其有效和毒性成分含量进行比较分析。结果 FTIR结合正交偏最小二乘法判别分析（orthogonalpartialleastsquares-discriminationanalysis,OPLS-DA）结果显示,白附片和黑顺片整体化学成分差异明显,饮片类型的差异高于产地差异;HPLC的聚类分析（hierarchical clustering analysis,HCA）、主成分分析（principal component analysis,PCA）、OPLS-DA和相似度分析（similarity analysis,SA）均能将黑顺片、白附片区分为2类,表明2种饮片的成分差异较大;含量测定结果显示,黑顺片的单酯型生物碱量显著高于白附片,具有统计学意义（P<0.01）,而双酯型生物碱含量差异不显著,无统计学意义。结论 白附片和黑顺片化学成分差异较大,临床上应区...     

Comparative analysis of the fate of donor dendritic cells and B cells and their influence on alloreactive T cell responses under tacrolimus immunosuppression

We have shown that tacrolimus (TAC)-induced liver allograft acceptance is associated with migration and persistence of donor B cells and dendritic cells (DC). To clarify whether these MHC class II+ leukocytes have favorable roles in inducing tolerance, we analyzed recipient T cell reactions after allogeneic B or DC infusion. LEW rat B cells localized exclusively in BN host B cell follicles without any direct contact with host T cells. While few donor DC migrated to T cell areas and marginal zones, they were captured by host APC, suggesting that allogeneic MHC class II+ cells may induce immune reactions via the indirect pathway. Although DC-infused non-immunosuppressed recipients showed enhanced ex vivo anti-donor responses, persistent in vitro donor-specific hyporeactivity was seen equally with donor DC or B cell infusion under TAC. The results indicate that donor MHC class II+ APC are capable of regulating recipient immune reactions under TAC. Possible involvement of the indirect pathway of allorecognition is discussed.     

The use of oral antibiotics in treating acne vulgaris: a new approach

Although acne is not an infectious disease, oral antibiotics have remained a mainstay of treatment over the last 40 years. The anti‐inflammatory properties of oral antibiotics, particularly the tetracyclines, are efficacious in treating inflammatory acne lesions. Common prescribing practices in Dermatology exert significant selection pressure on bacteria, contributing to the development of antibiotic resistance. Antibiotic use for acne not only promotes resistance in Propionibacterium acnes, but also affects other host bacteria with pathogenic potential. This review will summarize the commonly used treatments for acne vulgaris, and how they should be combined as rational treatment. The indications for using oral antibiotics in acne will be highlighted. Strategies described in the literature to conserve the utility of oral antibiotics will be summarized. These include limiting the duration of antibiotic therapy, concomitant use of a topical non‐antibiotic agent, use of subantimicrobial dose doxycycline, and the introduction of topical dapsone.     

The pulsed‐dye laser as an adjuvant treatment modality in acne vulgaris: a randomized controlled single‐blinded trial

Background Acne vulgaris is the most common skin disease and can pose a substantial therapeutic challenge. Recently, several phototherapeutic modalities, most notably pulsed‐dye laser (PDL) treatment, have been introduced, but the published results – albeit promising – are controversial. Objectives To assess the efficacy of an adjuvant PDL treatment when combined with a proven topical treatment [fixed‐combination clindamycin 1%–benzoyl peroxide 5% hydrating gel (C/BPO)]. Methods Eighty patients (38 males and 42 females, mean ± SD age 19·7 ± 5·9 years) were randomized in a 1 : 2 ratio to receive C/BPO alone or in combination with PDL treatment (wavelength 585 nm, energy fluence 3 J cm⁻², pulse duration 0·35 ms, spot size 7 mm). Patients were evaluated at baseline and at 2 and 4 weeks after initial treatment. The primary end points were the Investigator’s Static Global Assessment (ISGA) score and lesion count; the secondary end point was the Dermatology Life Quality Index (DLQI). Results Both groups showed a significant improvement during observation [ISGA 27·1% (C/BPO) and 24·6% (C/BPO + laser), total lesion count 9·2% and 9·0%, inflammatory lesion count 36·3% and 36·9%, DLQI 54·5% and 42·5%], but there was no significant or otherwise appreciable difference between treatment modalities as far as the extent of improvement was concerned. Patients with more severe findings at baseline had a greater benefit from either therapy regimen. Conclusions Our findings do not support the concept of a substantial benefit of PDL treatment in acne vulgaris.