射频消融联合吉非替尼治疗晚期非小细胞肺癌的临床分析

目的:观察射频消融术(RFA)联合吉非替尼(Gefitinib)对晚期非小细胞肺癌(NSCLC)治疗的临床效果。方法:26例晚期NSCLC(III、IV期)患者用RFA联合Gefitinib治疗,与23例单独使用RFA治疗的对照组进行比较,观察两组之间有效率、生活质量和不良反应。结果:根据疗效、生活质量评分等指标进行评价,联合治疗组有效率为65.4%,高于单纯RFA治疗组的34.8%,两组之间有显著性差异(P<0.01),对接受治疗的患者进行生活质量评价结果表明,所有接受RFA和Gefitinib联合治疗组中有71.3%的病人生活质量良好,而接受单纯RFA治疗组中只有47%的患者生活质量良好,两组之间有显著性差异(P<0.01),两组患者不良反应主要是疼痛、发热、腹泻等,只需对症处理。结论:RFA联合Gefitinib综合治疗NSCLC方案优于单纯采用RFA的治疗方案。     

鸦胆子油乳联合TP方案治疗晚期非小细胞肺癌近期临床观察

目的:观察鸦胆子油乳联合TP方案治疗晚期非小细胞肺癌(NSCLC)近期临床疗效。方法:选取2013年11月-2015年11月我院收治的80例晚期NSCLC患者进行分组研究,根据不同治疗方法分为参照组(n=40)和研究组(n=40),参照组给予TP化疗方案进行治疗,研究组给予鸦胆子油乳联合TP方案进行治疗,比较两组近期疗效及生活质量改善情况。结果:研究组治疗总有效率为67.5%,生活质量改善率为80.0%,参照组治疗总有效率为47.5%,生活质量改善率为67.5%,经统计比较,组间差异明显,具有统计学意义(P0.05)。结论:鸦胆子油乳联合TP方案治疗晚期NSCLC近期疗效优于单纯TP化疗,可显著改善患者生活质量,值得临床借鉴和进一步推广应用。     

重组人血管内皮抑素联合化放疗治疗晚期恶性肿瘤的临床观察

目的:探讨重组人血管内皮抑素(recombinant human endostatin,rh-ES)联合化放疗治疗晚期恶性肿瘤的疗效及安全性。方法:回顾性分析我科2010年1月至2013年8月收治的27例晚期恶性肿瘤患者病例,27例患者均接受rh-ES联合化疗±放疗的综合治疗,rh-ES用药1周期后评价生活质量变化及不良反应,2周期后评价疗效。结果:23例可评价近期疗效的患者客观有效率30.4%,疾病控制率78.3%。18例非小细胞肺癌(non-small cell lung cancer,NSCLC)中位无进展生存期5.5月,中位总生存期12.0月,1年生存率50.0%,2年生存率28.6%。全组患者生活质量改善或稳定23例(85.2%),Ⅲ~Ⅳ度不良反应8例次。结论:Rh-ES联合化放疗治疗晚期恶性肿瘤的疗效及安全性良好,可改善或稳定患者生活质量。与其他单纯化疗研究结果比较,晚期NSCLC的中位无进展生存期及1年生存率较高,值得临床推广。     

脐带间充质干细胞联合利妥昔单抗治疗多发性硬化症30例临床观察

目的:研究脐带间充质干细胞联合利妥昔单抗治疗多发性硬化的临床效果.方法:将我院收治的60例MS患者随机分为观察组和对照组各30例.对照组患者应用糖皮质激素治疗,观察组患者应用脐带间充质干细胞联合利妥昔单抗治疗,观察比较两组患者疾病无进展生存率(PFS)、治疗前后总发作次数、年均发作次数、生活质量、病灶数目及总体积变化,同时注意不良反应发生情况.结果:观察组患者＜6个月、6～l2个月、13～24个月、25～36个月及＞36个月的PFS均显著高于对照组(P＜0.01);观察组患者治疗前后MS总发作次数、年均发作次数均显著减少,生活质量得到明显改善(P＜0.01);结束治疗后两组比较,观察组患者总发作次数、年均发作次数均显著少于对照组,生活质量明显好于对照组(P＜0.01);观察组患者治疗前后病灶数目无明显变化(P＞0.05)但病灶总体积显著减小(P＜0.01);治疗后组间比较,两组患者病灶数目无显著差异(P＞0.05)但观察组患者病灶总体积显著小于对照组(P＜0.01);两组患者接受治疗后不良反应发生率相近且无显著差异(P＞0.05).结论:脐带间充质干细胞联合利妥昔单抗治疗多发性硬化可延缓疾病进展、提高患者生活质量同时不增加不良反应发生率.     

奥沙利铂联合常规化疗治疗晚期结肠癌的临床观察

目的:研究奥沙利铂(L-OHP)联合化疗治疗晚期结肠癌的疗效.方法:选取60例晚期结肠癌患者,随机分为治疗组和对照组,每组各30例,对照组给予常规化疗治疗,治疗组给予L-OHP联合化疗治疗,观察比较两组的疗效和不良反应.结果:治疗组治疗总有效率(53.3％)显著高于对照组(36.7％)(P＜0.05);治疗组中初治患者治疗有效率(63.2％)显著高于复治患者(36.3％)(P＜0.05),也显著高于对照组中的初诊患者治疗有效率(38.9％)(P＜0.05).对照组中初治患者治疗有效率(38.9％)和复治患者(30.0％)相当(P＞0.05),复治患者的治疗有效率与对照组复治患者相当(P＞0.05).治疗组白细胞减少和神经毒性的发生率要高于对照组(P＜0.05),而治疗组出现口腔炎的比例低于对照组(P＜0.05),恶心呕吐、腹泻、血小板减少、手足综合征和肾毒性的发生率均相当(P＞0.05).结论:L-OHP联合化疗治疗晚期结肠癌初治患者具有较好的近期疗效和安全性,但其远期疗效和预后尚需进一步研究观察.     

艾迪注射液联合吉非替尼片治疗EGFR阳性晚期非小细胞肺癌的临床疗效观察

目的:探讨艾迪注射液结合吉非替尼片治疗表皮生长因子受体(EGFR)阳性晚期非小细胞肺癌(NSCLC)的临床疗效。方法:选取2012年1月至2015年12月在航天中心医院和华中科技大学同济医学院附属普爱医院治疗的EGFR阳性晚期NSCLC患者62例,按照随机双盲法分为实验组和对照组各31例,实验组给予艾迪注射液联合吉非替尼片治疗,对照组单纯使用吉非替尼片治疗,两组均治疗2个疗程。比较两组患者的治疗效果及其不良反应的发生情况,随访1年,比较两组患者的存活率。结果:实验组有效率和疾病控制率高于对照组(P0.05),实验组疼痛减轻率、睡眠质量改善率和饮食改善率较对照组升高(P0.05),实验组不良反应的发生率稍低于对照组,但是差异无统计学意义(P0.05)。随访1年发现实验组28例存活,对照组22例存活,实验组的存活率高于对照组(P0.05)。结论:艾迪注射液联合吉非替尼片较单纯应用吉非替尼片治疗EGFR阳性晚期NSCLC的疗效更好,能够改善患者睡眠质量和饮食状况,减轻疼痛,用药安全性较好,从而改善患者的预后,值得临床推广。     

TP与GP方案治疗晚期非小细胞肺癌的疗效比较

目的:观察多西紫杉醇联合顺铂(TP)与吉西他滨联合顺铂(GP)治疗晚期非小细胞肺癌(NSCLC)的临床疗效和毒副反应。方法:选取晚期NSCLC60例,随机分为TP组和GP组,每组30例,均完成两个周期化疗。结果:TP组治疗有效率(CR PR)为43．3%,GP组为40．0%,两组比较无显著性差异(P＞0．05)。不良反应主要为骨髓抑制和恶心呕吐;TP组主要为白细胞的下降和末梢神经炎,GP组主要表现为血小板的下降。两组病人毒副反应均可耐受。结论:西紫杉醇或吉西他滨联合顺铂治疗晚期NSCLC均有较好的疗效,毒性反应可以耐受,但应注意不良反应的处理。     

参芪扶正注射液联合化疗治疗晚期肺癌临床观察

目的:探讨参芪扶正注射液联合化疗治疗晚期肺癌、改善化疗不良反应的作用.方法:本研究采用前瞻性开放性病例对照研究,将69例肺癌患者随机分为治疗组(36例)和对照组(33例).对照组采用NP化疗方案;治疗组在NP化疗方案基础上加用参芪扶正注射液250 mL静脉滴注,每天1次,28天为1个周期.所有患者均用药2个周期.观察近期疗效、生活质量变化、不良反应及免疫功能变化.结果:治疗2个周期后.治疗组患者在疗效控制情况、生活质量Kamofsky评分、不良反应与对照组比均明显改善(P＜0.01).结论:参芪扶正注射液联合化疗治疗晚期肺癌,可显著提高疗效,提高生活质量,减轻化疗的毒副反应.     

伊班膦酸钠联合化疗治疗恶性肿瘤骨转移的临床观察

目的:探讨伊班膦酸钠联合化疗治疗恶性骨转移的临床疗效.方法:采用随机分组的方法将60例病人分为二组:单纯化疗组:根据原发肿瘤采用相应的治疗方案;联合治疗组:在化疗基础上联合邦罗力治疗.结果:骨转移灶疗效评价:联合治疗组的有效率为50%,单纯化疗组的有效率为23.3%,前者的疗效明显优于后者,且有显著性差异(p＜0.05);止痛疗效评价:联合治疗组的有效率为83.3%,单纯化疗组的有效率为53.3%,前者明显优于后者,且有显著性差异(p＜0.05).结论:伊班膦酸钠的不良反应轻,联合化疗可显著增强疗效,改善患者体能状态.     

培美曲塞联合顺铂治疗晚期非小细胞肺癌的临床疗效观察

目的:探讨培美曲塞联合顺铂治疗晚期非小细胞肺癌(NSCLC)的临床疗效。方法:随机选取我院肿瘤科晚期NSCLC患者177例,随机将其分为3组,培美曲塞联合顺铂治疗(PP组)72例,多西他赛联合顺铂治疗(DP组)53例,吉西他滨联合顺铂治疗(GP组)52例,比较三组治疗方法的临床疗效与不良反应之间的差异,根据临床疗效将PP组分为有效组与无效组,分析培美曲塞联合顺铂治疗晚期NSCLC的影响因素。结果:PP组疾病控制率(DCR)与客观有效率(ORR)均显著高于GP组(均P0.05);PP组与DP组近期疗效之间的比较无显著差异(均P0.05)。PP组的药物毒副作用均显著优于DP组与GP组(均P0.05)。PP组的中位生存期显著高于DP组与GP组(均P0.05),在无吸烟、腺癌与IV期晚期NSCLC患者中,培美曲塞联合顺铂治疗有效率更高。结论:培美曲塞治疗晚期NSCLC的疗效佳,与多西他赛相当并显著优于吉西他滨治疗,药物毒副作用小,且受吸烟状况、病理类型与临床分期影响。     

Collagen-like triple helix formation of synthetic (Pro-Pro-Gly)10 analogues: (4(S)-hydroxyprolyl-4(R)-hydroxyprolyl-Gly)10, (4(R)-hydroxyprolyl-4(R)-hydroxyprolyl-Gly)10 and (4(S)-fluoroprolyl-4(R)-fluoroprolyl-Gly)10.

For the rational design of a stable collagen triple helix according to the conventional rule that the pyrrolidine puckerings of Pro, 4-hydroxyproline (Hyp) and 4-fluoroproline (fPro) should be down at the X-position and up at the Y-position in the X-Y-Gly repeated sequence for enhancing the triple helix propensities of collagen model peptides, a series of peptides were prepared in which X- and Y-positions were altogether occupied by Hyp(R), Hyp(S), fPro(R) or fPro(S). Contrary to our presumption that inducing the X-Y residues to adopt a down-up conformation would result in an increase in the thermal stability of peptides, the triple helices of (Hyp(S)-Hyp(R)-Gly)(10) and (fPro(S)-fPro(R)-Gly)(10) were less stable than those of (Pro-Hyp(R)-Gly)(10) and (Pro-fPro(R)-Gly)(10), respectively. As reported by B?chinger's and Zagari's groups, (Hyp(R)-Hyp(R)-Gly)(10) which could have an up-up conformation unfavorable for the triple helix, formed a triple helix that has a high thermal stability close to that of (Pro-Hyp(R)-Gly)(10). These results clearly show that the empirical rule based on the conformational preference of pyrrolidine ring at each of X and Y residues should not be regarded as still valid, at least for predicting the stability of collagen models in which both X and Y residues have electronegative groups at the 4-position.     

Synthesis and luminescence properties of a blue-emitting Sr(3.5) Y(6.5) O(2) (PO(4) )(1.5) (SiO(4) )(4.5) :Eu(2+) phosphor

A novel blue‐emitting Sr_3.5Y_6.5O₂(PO₄)_1.5(SiO₄)_4.5:Eu²⁺ phosphor was synthesized via a solid‐state reaction. Powder X‐ray diffraction (XRD) analysis demonstrated that the Sr_3.5Y_6.5O₂(PO₄)_1.5(SiO₄)_4.5 host had a hexagonal crystal structure in the space group P6₃/m and unit cell parameters a = 9.418 Å, c = 6.900 Å. The as‐prepared phosphor showed a blue emission and all the main emission peaks were located at around 466 nm for different excitation wavelengths of 297, 333 and 391 nm. The temperature dependence of the photoluminescence property was investigated in the range 20–250 °C, and the emission intensity decreased to 71% of the initial value at room temperature on increasing the temperature to 150 °C. According to the classical theory of fluorescent thermal quenching, the activation energy (ΔE) for the thermal quenching luminescence of the as‐prepared Sr_3.45Y_6.5O₂(PO₄)_1.5(SiO₄)_4.5:0.05Eu²⁺ phosphor was determined to be 0.20 eV. Copyright © 2011 John Wiley & Sons, Ltd.     

Role of tfdC(I)D(I)E(I)F(I) and tfdD(II)C(II)E(II)F(II) gene modules in catabolism of 3-chlorobenzoate by Ralstonia eutropha JMP134(pJP4)

The enzymes chlorocatechol-1,2-dioxygenase, chloromuconate cycloisomerase, dienelactone hydrolase, and maleylacetate reductase allow Ralstonia eutropha JMP134(pJP4) to degrade chlorocatechols formed during growth in 2,4-dichlorophenoxyacetate or 3-chlorobenzoate (3-CB). There are two gene modules located in plasmid pJP4, tfdC(I)D(I)E(I)F(I) (module I) and tfdD(II)C(II)E(II)F(II) (module II), putatively encoding these enzymes. To assess the role of both tfd modules in the degradation of chloroaromatics, each module was cloned into the medium-copy-number plasmid vector pBBR1MCS-2 under the control of the tfdR regulatory gene. These constructs were introduced into R. eutropha JMP222 (a JMP134 derivative lacking pJP4) and Pseudomonas putida KT2442, two strains able to transform 3-CB into chlorocatechols. Specific activities in cell extracts of chlorocatechol-1,2-dioxygenase (tfdC), chloromuconate cycloisomerase (tfdD), and dienelactone hydrolase (tfdE) were 2 to 50 times higher for microorganisms containing module I compared to those containing module II. In contrast, a significantly (50-fold) higher activity of maleylacetate reductase (tfdF) was observed in cell extracts of microorganisms containing module II compared to module I. The R. eutropha JMP222 derivative containing tfdR-tfdC(I)D(I)E(I)F(I) grew four times faster in liquid cultures with 3-CB as a sole carbon and energy source than in cultures containing tfdR-tfdD(II)C(II)E(II)F(II). In the case of P. putida KT2442, only the derivative containing module I was able to grow in liquid cultures of 3-CB. These results indicate that efficient degradation of 3-CB by R. eutropha JMP134(pJP4) requires the two tfd modules such that TfdCDE is likely supplied primarily by module I, while TfdF is likely supplied by module II.     

Induction of in vitro flowering in Dendrobium Madame Thong-In (Orchidaceae) seedlings is associated with increase in endogenous N(6)-(Delta (2)-isopentenyl)-adenine (iP) and N (6)-(Delta (2)-isopentenyl)-adenosine (iPA) levels

We analysed the endogenous cytokinin levels of Dendrobium Madame Thong-In seedlings grown in vitro during vegetative and flowering-inductive periods. HPLC was used to fractionate the extracts and radioimmunoassay (RIA) was used for assay of zeatin (Z), dihydrozeatin (DZ), N(6)-(Delta(2)-isopentenyl)-adenine (iP) and their derivatives. Coconut water used in experiments was found to contain high level (>136 pmol ml(-1)) of zeatin riboside (ZR). Protocorms and seedlings cultured in medium with coconut water were found to contain 0.5-3.9 pmol g(-1) FW of the cytokinins analysed. Seedlings (1.0-1.5 cm) cultured in flowering-inductive liquid medium containing 6-benzyladenine (BA, 4.4 muM) and coconut water (CW, 15%) contained up to 200 and 133 pmol g(-1) FW of iP and iPA, respectively. These levels were significantly higher than all other cytokinins analysed in seedlings of the same stage and were about 80- to 150-folds higher than seedlings cultured in non-inductive medium. During the transitional (vegetative to reproductive) stage, the endogenous levels of iP (178 pmol g(-1) FW) and iPA (63 pmol g(-1) FW) were also significantly higher than cytokinins in the zeatine (Z) and dihydrozeatin (DZ) families in the same seedlings. Seedlings that grew on inductive medium but remained vegetative contained lower levels of iPA. The importance of the profiles of iP and its derivatives in induction of in vitro flowering of D. Madame Thong-In is discussed.     

The helix-coil transitions of poly (dA)-poly (dT) and poly (dA-dT)-poly (dA-dT)

Helix–coil transition curves are calculated for poly (dA) poly(dT) and poly (dA-dT) poly (dA-dT) using the integral equation approach of Goel and Montroll.⁵ The transitions are described by the loop entropy model with the exponent of the loop entropy factor, k, remaining an arbitrary constant. The theoretical calculations are compared with experimental transition curves of the two polymers. Results indicate that the stacking energies for these two polymers differ by about 1 kcal/mole of base pairs. Also, a fit between theory and experiment was not possible for k > 1.70.     

Biology of Bactrocera (Zeugodacus) tau (Walker) (Diptera: Tephritidae)

The biology of the fruit fly Bactrocera tau, an important horticultural pest, was studied under laboratory conditions at 25°C and 60–70% relative humidity on Cucurbita maxima. The duration of mating averaged 408.03 ± 235.93 min. After mating, the female fly had a preoviposition period of 11.7 ± 4.49 days. The oviposition rate was 9.9 ± 8.50 eggs and fecundity was 464.6 ± 67.98 eggs/female. Eggs were elliptical, smooth and shiny white, turning darker as hatching approached, and measured 1.30 ± 0.07 mm × 0.24 ± 0.04 mm. The chorion has polygonal microsculpturing and is species-specific with polygonal walls. The egg period lasts for 1.3 ± 0.41 days. The duration of the larval period is 1.2 ± 0.42, 1.7 ± 0.48 and 4.0 ± 0.94 days for first, second and third instars, respectively. Pupation occurs in the sand or soil and pupal periods are 7.0 ± 0.47 days. The life cycle from egg to adult was completed in 14.2 ± 1.69 days; the longevity of mated females and males was 130.33 ± 14.18 and 104.66 ± 31.21 days, respectively. At least two to three generations were observed from June 2008 to June 2009.     

Spectroscopic investigations of Er(3+) :CdO-Bi(2) O(3) -B(2) O(3) glasses

This article reports on the optical properties of Er³⁺ ions doped CdO–Bi₂O₃–B₂O₃ (CdBiB) glasses. The materials were characterized by optical absorption and emission spectra. By using Judd–Ofelt theory, the intensity parameters Ω_λ (λ = 2, 4, 6) and also oscillatory strengths were calculated from the absorption spectra. The results were used to compute the radiative properties of Er³⁺:CdBiB glasses. The concentration quenching and energy transfer from Yb³⁺–Er³⁺ were explained. The stimulated emission cross‐section, full width at half maximum (FWHM) and FWHM × values are also calculated for all the Er³⁺:CdBiB glasses. Copyright © 2011 John Wiley & Sons, Ltd.     

Cationic (tripyrrinato)palladium(II) complexes

The formation of cationic palladium(II)complexes [TrpyPd^II]⁺X⁻ by salt metathesis of the respective trifluoroacetates with different salts of weakly coordinating anions X⁻ was investigated. With non-hydrolizable counterions, cationic mono- and dinuclear complexes are observed depending on the nature of the anion X⁻ and the solvent. The mononuclear cations, which are only formed with X = BAr^F, most probably carry a weakly bound molecule of dichloromethane at the fourth coordination site of Pd^II. When treated with diazoalkanes, only these are sufficiently reactive to form carbene complexes. Four- and five coordinate Lewis base adducts [TrpyPd^IIL]⁺ with L = CH₃NC, tBuNH₂, PMe₃, PEt₃ and PiPr₃ and [TrpyPd^IIL₂]⁺ with L = PMe₃ were prepared from the mononuclear cations [TrpyPd^II]⁺BAr^F−. From structural studies it becomes apparent, that the formation of stable five coordinate Pd^II species is restricted to medium size ligands and depends on the delicate balance between the steric influence of L and the strain, which is induced on the TrpyPd^II unit.