目的分析3例严重维生素D缺乏继发甲状旁腺功能亢进症患者的临床特点及治疗策略。方法收集确诊为维生素D缺乏继发甲状旁腺功能亢进患者3例,对其进行详细的病史采集和体格检查,生物化学指标测定及影像学检查。结果患者1、2起病隐匿,临床...目的分析3例严重维生素D缺乏继发甲状旁腺功能亢进症患者的临床特点及治疗策略。方法收集确诊为维生素D缺乏继发甲状旁腺功能亢进患者3例,对其进行详细的病史采集和体格检查,生物化学指标测定及影像学检查。结果患者1、2起病隐匿,临床症状不典型;患者3有长期双下肢乏力,全身疼痛,进行性加重的活动障碍及身高变矮。实验室检查结果:血25羟维生素D (25 hydroxyvitamin D,25OHD)低于检测值下限(<8. 0μg/L),甲状旁腺素(parathyroid hormone,PTH)水平升高,碱性磷酸酶(alkaline phosohatase,ALP)及Ⅰ型胶原C端肽(C-terminal telopeptide of type 1 collagen,β-CTX)升高。双能X线吸收检测仪(dual energy X-ray absorptiometry,DXA)检测骨密度,提示骨密度显著降低。给予维生素D联合钙剂治疗3个月后,患者临床症状好转,随着25OHD水平升高,血PTH及骨转换标志物水平均下降,骨密度检查可见骨量增加。结论维生素D缺乏在人群中普遍存在,由于早期缺乏临床症状易被忽视,但当其引起继发性甲状旁腺功能亢进时,会对骨骼产生严重影响,导致骨转换增加,骨量流失加快,摔倒及骨折风险增加等。因此,应重视维生素D缺乏的早期防治,避免发生继发性甲状旁腺功能亢进。展开更多
目的本研究旨在了解双膦酸盐类(bisphosphonates,BPs)药物治疗成骨不全症(osteogenesis imperfecta,OI)患儿,X线检查见长骨两端出现致密条带的性质。方法选取2012-2017年在北京协和医院诊断的OI患儿60例,按照2∶1随机分配,分别予静脉输...目的本研究旨在了解双膦酸盐类(bisphosphonates,BPs)药物治疗成骨不全症(osteogenesis imperfecta,OI)患儿,X线检查见长骨两端出现致密条带的性质。方法选取2012-2017年在北京协和医院诊断的OI患儿60例,按照2∶1随机分配,分别予静脉输注唑来膦酸(zoledronic acid,ZOL)5 mg/年或口服阿仑膦酸钠(alendronate,ALN)70 mg/周治疗。测量治疗期间生长速度的变化,检测骨转换生化指标,采用双能X线吸收检测仪测量腰椎及髋部骨密度(bone mineral density,BMD),分析X线片所见长骨两端致密条带的特点及其相关因素。结果两组患者基线年龄、身高、骨密度比较,差异无统计学意义(P>0.05)。ZOL组患者治疗12、24个月后长骨两端分别出现一条和两条致密线,口服ALN组治疗期间患者骨骼未出现致密线。治疗24个月后,ZOL和ALN组腰椎骨密度分别增加66.8%±39.5%和67.8%±34.4%,股骨颈骨密度增加51.8%±36.6%和53.0%±33.6%(与基线相比,均P<0.01)。ZOL和ALN组血清碱性磷酸酶(alkaline phosphatase,ALP)分别下降28.0%±28.2%和24.2%±24.8%,血清β交联Ⅰ型胶原羧基末端肽(βcross-linked carboxy-terminal telopeptide of type I collagen,β-CTX)水平则下降37.5%±24.6%和31.8%±30.0%(与基线比较,均P<0.05)。两组身高较基线明显增加,生长速度与正常儿童相似,提示ZOL不影响患儿生长速度,长骨两端致密线为静脉BPs引起骨骼矿化短期增加而致的特殊斑马线,并非生长障碍线。结论本研究首次在中国OI儿童患者中发现静脉唑来膦酸治疗导致长骨两端出现特异性斑马线,条带数目与静脉双膦酸盐治疗次数相同,患者生长速度正常,其并非生长障碍线。展开更多
Wheat crown rot caused by Fusarium spp. is a common disease worldwide. Both Fusarium pseudograminearum and Fusarium graminearum infect wheat crown and produce mycotoxin leading to grain loss due to white head. F. pseu...Wheat crown rot caused by Fusarium spp. is a common disease worldwide. Both Fusarium pseudograminearum and Fusarium graminearum infect wheat crown and produce mycotoxin leading to grain loss due to white head. F. pseudograminearum （Fp） was reported in wheat from Henan Province of China a couple of years ago. The wheat crown rot （CR） caused by this new pathogen is as an emerging severe disease of wheat, which has recently expanded to several provinces in China and is, therefore, under rapid investigation. Colonization of wheat tissue by Fp is accomplished though the formation of a septated foot-shaped appressoria and generation of a penetration peg to break through the internal cells of leaf sheath. The molecular mechanism by which Fp regulates the pathogenesis on wheat host is unclear. Here, we report FpPDE1, a P-type ATPase-encoding predicted PDE1 orthologue gene of Magnaporthe oryzae, belonging to the DRS2 subfamily of aminophospholipid translocases. The gene deletion of FpPDE1 with the split-marker approach did not obviously affect hyphae growth and conidiation, but led to an attenuated virulence on wheat base stem and root. Our finding indicates that the putative aminophospholipid translocases is not essential for the infectious hyphae development in Fp.展开更多
目的调查男性骨质疏松症的病因谱,为疾病的早期诊断、鉴别诊断提供参考。方法纳入2005年至2020年北京协和医院内分泌科诊断的男性骨质疏松或骨量减少患者,调查临床特征、生化指标、骨密度及骨骼X线片,依据国际疾病分类第十次修订本(Inte...目的调查男性骨质疏松症的病因谱,为疾病的早期诊断、鉴别诊断提供参考。方法纳入2005年至2020年北京协和医院内分泌科诊断的男性骨质疏松或骨量减少患者,调查临床特征、生化指标、骨密度及骨骼X线片,依据国际疾病分类第十次修订本(International Classification of Diseases,10th Revision,ICD-10)分析男性骨质疏松症的病因谱。结果412例患者中继发性骨质疏松或骨量减少占64.6%,原发性仅占35.4%。≥50岁男性患者中,常见继发骨质疏松病因为性腺功能减退(10.7%)、帕金森病(7.2%)等;50岁以下男性患者中,继发性骨质疏松病因以性腺功能低下(29.9%)、垂体前叶功能减退(19.2%)较常见。男性低骨量患者中83.8%存在维生素D不足或缺乏。男性原发性和继发性骨质疏松及骨量减少患者腰椎和股骨近端各部位骨密度未见明显差异,但继发性骨质疏松及低骨量患者血清Ⅰ型胶原交联羧基末端肽、碱性磷酸酶水平明显高于原发性骨质疏松患者。结论男性骨质疏松症中继发性所占比例明显高于女性,且病因复杂,进行全面的鉴别诊断具有重要临床意义,骨转换生化指标升高对于男性继发性骨质疏松症具有一定的提示意义。展开更多
文摘目的分析3例严重维生素D缺乏继发甲状旁腺功能亢进症患者的临床特点及治疗策略。方法收集确诊为维生素D缺乏继发甲状旁腺功能亢进患者3例,对其进行详细的病史采集和体格检查,生物化学指标测定及影像学检查。结果患者1、2起病隐匿,临床症状不典型;患者3有长期双下肢乏力,全身疼痛,进行性加重的活动障碍及身高变矮。实验室检查结果:血25羟维生素D (25 hydroxyvitamin D,25OHD)低于检测值下限(<8. 0μg/L),甲状旁腺素(parathyroid hormone,PTH)水平升高,碱性磷酸酶(alkaline phosohatase,ALP)及Ⅰ型胶原C端肽(C-terminal telopeptide of type 1 collagen,β-CTX)升高。双能X线吸收检测仪(dual energy X-ray absorptiometry,DXA)检测骨密度,提示骨密度显著降低。给予维生素D联合钙剂治疗3个月后,患者临床症状好转,随着25OHD水平升高,血PTH及骨转换标志物水平均下降,骨密度检查可见骨量增加。结论维生素D缺乏在人群中普遍存在,由于早期缺乏临床症状易被忽视,但当其引起继发性甲状旁腺功能亢进时,会对骨骼产生严重影响,导致骨转换增加,骨量流失加快,摔倒及骨折风险增加等。因此,应重视维生素D缺乏的早期防治,避免发生继发性甲状旁腺功能亢进。
文摘目的本研究旨在了解双膦酸盐类(bisphosphonates,BPs)药物治疗成骨不全症(osteogenesis imperfecta,OI)患儿,X线检查见长骨两端出现致密条带的性质。方法选取2012-2017年在北京协和医院诊断的OI患儿60例,按照2∶1随机分配,分别予静脉输注唑来膦酸(zoledronic acid,ZOL)5 mg/年或口服阿仑膦酸钠(alendronate,ALN)70 mg/周治疗。测量治疗期间生长速度的变化,检测骨转换生化指标,采用双能X线吸收检测仪测量腰椎及髋部骨密度(bone mineral density,BMD),分析X线片所见长骨两端致密条带的特点及其相关因素。结果两组患者基线年龄、身高、骨密度比较,差异无统计学意义(P>0.05)。ZOL组患者治疗12、24个月后长骨两端分别出现一条和两条致密线,口服ALN组治疗期间患者骨骼未出现致密线。治疗24个月后,ZOL和ALN组腰椎骨密度分别增加66.8%±39.5%和67.8%±34.4%,股骨颈骨密度增加51.8%±36.6%和53.0%±33.6%(与基线相比,均P<0.01)。ZOL和ALN组血清碱性磷酸酶(alkaline phosphatase,ALP)分别下降28.0%±28.2%和24.2%±24.8%,血清β交联Ⅰ型胶原羧基末端肽(βcross-linked carboxy-terminal telopeptide of type I collagen,β-CTX)水平则下降37.5%±24.6%和31.8%±30.0%(与基线比较,均P<0.05)。两组身高较基线明显增加,生长速度与正常儿童相似,提示ZOL不影响患儿生长速度,长骨两端致密线为静脉BPs引起骨骼矿化短期增加而致的特殊斑马线,并非生长障碍线。结论本研究首次在中国OI儿童患者中发现静脉唑来膦酸治疗导致长骨两端出现特异性斑马线,条带数目与静脉双膦酸盐治疗次数相同,患者生长速度正常,其并非生长障碍线。
基金financially supported by the National Special Fund for Agro-scientific Research in the Public Interest of China(201503112)the Basic and Advance Technology Research Program in Henan Province,China(152300410073)the Talent Project of Henan Agricultural University,China(3600861)
文摘Wheat crown rot caused by Fusarium spp. is a common disease worldwide. Both Fusarium pseudograminearum and Fusarium graminearum infect wheat crown and produce mycotoxin leading to grain loss due to white head. F. pseudograminearum （Fp） was reported in wheat from Henan Province of China a couple of years ago. The wheat crown rot （CR） caused by this new pathogen is as an emerging severe disease of wheat, which has recently expanded to several provinces in China and is, therefore, under rapid investigation. Colonization of wheat tissue by Fp is accomplished though the formation of a septated foot-shaped appressoria and generation of a penetration peg to break through the internal cells of leaf sheath. The molecular mechanism by which Fp regulates the pathogenesis on wheat host is unclear. Here, we report FpPDE1, a P-type ATPase-encoding predicted PDE1 orthologue gene of Magnaporthe oryzae, belonging to the DRS2 subfamily of aminophospholipid translocases. The gene deletion of FpPDE1 with the split-marker approach did not obviously affect hyphae growth and conidiation, but led to an attenuated virulence on wheat base stem and root. Our finding indicates that the putative aminophospholipid translocases is not essential for the infectious hyphae development in Fp.
文摘目的调查男性骨质疏松症的病因谱,为疾病的早期诊断、鉴别诊断提供参考。方法纳入2005年至2020年北京协和医院内分泌科诊断的男性骨质疏松或骨量减少患者,调查临床特征、生化指标、骨密度及骨骼X线片,依据国际疾病分类第十次修订本(International Classification of Diseases,10th Revision,ICD-10)分析男性骨质疏松症的病因谱。结果412例患者中继发性骨质疏松或骨量减少占64.6%,原发性仅占35.4%。≥50岁男性患者中,常见继发骨质疏松病因为性腺功能减退(10.7%)、帕金森病(7.2%)等;50岁以下男性患者中,继发性骨质疏松病因以性腺功能低下(29.9%)、垂体前叶功能减退(19.2%)较常见。男性低骨量患者中83.8%存在维生素D不足或缺乏。男性原发性和继发性骨质疏松及骨量减少患者腰椎和股骨近端各部位骨密度未见明显差异,但继发性骨质疏松及低骨量患者血清Ⅰ型胶原交联羧基末端肽、碱性磷酸酶水平明显高于原发性骨质疏松患者。结论男性骨质疏松症中继发性所占比例明显高于女性,且病因复杂,进行全面的鉴别诊断具有重要临床意义,骨转换生化指标升高对于男性继发性骨质疏松症具有一定的提示意义。
