The effects of beta-2 adrenergic agonist and antagonist on human bone metabolism: A randomized controlled trial

PurposeGenetic knockout or pharmacological inhibition of the beta-2 adrenergic receptor (B2AR) increased bone mass, whereas stimulation decreased bone mass in rodents. In humans, observational studies support sympathetic nervous system regulation of bone metabolism, but intervention studies are lacking. We aimed to determine the effects of a selective beta-2 adrenergic agonist and non-selective antagonist on human bone metabolism.Methods32 healthy postmenopausal women were included in a randomized controlled trial conducted in the Academic Medical Center Amsterdam. Participants were randomized to receive treatment with 17-β estradiol 2 mg/day; 17-β estradiol 2 mg/day and terbutaline 5 mg/day (selective B2AR agonist); propranolol 80 mg/day (non-selective B-AR antagonist); or no treatment during 12 weeks. Main outcome measure was the change in serum concentrations of procollagen type I N propeptide (P1NP) and C-terminal crosslinking telopeptides of collagen type I (CTx) as markers of bone formation and resorption after 12 weeks compared between the treatment groups. Data were analyzed with mixed model analysis.Results17-β estradiol decreased bone turnover compared to control (P1NP p < 0.001, CTx p = 0.003), but terbutaline combined with 17-β estradiol failed to increase bone turnover compared to 17-β estradiol alone (P1NP p = 0.135, CTx p = 0.406). Propranolol did not affect bone turnover compared to control (P1NP p = 0.709, CTx p = 0.981).ConclusionSelective beta-2 adrenergic agonists and non-selective beta-antagonists do not affect human bone turnover although we cannot exclude small changes below the detection limit of this study.     

功能磁共振技术在推拿科学研究中的应用进展

功能磁共振成像（fMRI）技术出现于20世纪90年代，它集合了神经活动与高分辨率磁共振成像技术，为学者们研究人及动物的脑或脊髓提供了巨大的技术支持。同时，也已成为揭示针灸、推拿等中医疗法发挥全身调节作用、研究针灸推拿在疾病治疗方面的大脑中枢机制提供了重要研究手段。文章通过搜集检索近年来国内外发表与fMRI相关的推拿手法文献，分类整理运用fMRI技术开展的相关研究内容，进一步阐释推拿中枢作用机制的研究进展，就fMRI技术在推拿研究领域的应用作一综述。     

津沽推拿流派学术概要

发源于天津地区的津沽推拿流派,具有历史悠久、底蕴深厚、风格独特、学术特点突出等特点。作为全国具有代表性的推拿流派,津沽推拿流派已有百余年发展历史,现已形成津沽伤科推拿、津沽脏腑推拿、津沽小儿推拿3大稳定的学术分支。津沽推拿流派注重理论传承,强调道术结合,又具有典型的手法特点。津沽推拿流派对近代推拿的发展贡献突出,目前该流派的传承推广应用工作成绩卓著,引起了推拿学界的广泛关注。     

贾英杰教授应用“圣愈汤”治疗晚期前列腺癌经验总结

前列腺癌是男性泌尿生殖系统中发病率较高的恶性肿瘤，极大威胁着男性健康。由于其发现时常为晚期，故内分泌治疗是主要治疗手段，但几乎都不可避免的将发展成去势抵抗性前列腺癌。晚期前列腺癌由于其生存时间较短、治疗效果欠佳，一直是现代医学的难题。中医学根据前列腺癌特点将其归属于“癃闭”“痛症”“癥积”“淋证”等病范畴。贾英杰教授总结晚期前列腺癌病机为“气血亏虚为主，兼毒瘀互结”，临床以补气养血为主、辅以祛瘀散结为治疗原则，采用圣愈汤加减，疗效颇佳，充分发挥了中医学的优势。     

Reducing histone acetylation rescues cognitive deficits in mouse model of fragile X syndrome

Fragile X syndrome(FXS) is the most prevalent inherited intellectual disability, resulting from a loss of fragile X mental retardation protein(FMRP). Patients with FXS suffer lifelong cognitive disabilities, but the function of FMRP in the adult brain and the mechanism underlying age-related cognitive decline in FXS is not fully understood. Here, we report that a loss of FMRP results in increased protein synthesis of histone acetyltransferase EP300 and ubiquitinationmediated degradation of histone deacetylase HDAC1 in adult hippocampal neural stem cells(NSCs). Consequently, FMRPdeficient NSCs exhibit elevated histone acetylation and age-related NSC depletion, leading to cognitive impairment in mature adult mice. Reducing histone acetylation rescues both neurogenesis and cognitive deficits in mature adult FMRPdeficient mice. Our work reveals a role for FMRP and histone acetylation in cognition and presents a potential novel therapeutic strategy for treating adult FXS patients.     

Low expression of RGL4 is associated with a poor prognosis and immune infiltration in lung adenocarcinoma patients

Lung adenocarcinoma (LUAD) is a frequently diagnosed histologic subtype with increasing morbidity and mortality. RalGDS-Like 4 (RGL4) has not been reported to be associated with cancer risk, prognosis, immunotherapy or any other treatments. We perform a bioinformatics analysis on data downloaded from the Cancer Genome Atlas (TCGA)-LUAD, and we find that low expression of RGL4 is accompanied by worse outcomes and prognosis in LUAD patients. As a promising predictor, the potential influence and mechanisms of RGL4 on overall survival are worth exploring. Moreover, RGL4 expression is significantly associated with a variety of tumor-infiltrating immune cells (TIICs), particularly memory B cells, CD8⁺T cells and neutrophils. Subsequently, we evaluated the most notable KEGG pathways, including glycolysis gluconeogenesis, the P53 signaling pathway, RNA degradation, and the B cell receptor signaling pathway, among others. Our findings provide evidence that the decreased expression of RGL4 is significantly associated with poor prognosis and immune cell infiltration in patients with LUAD and highlight the use of RGL4 as a novel predictive biomarker for the prognosis of LUAD and other cancers. RGL4 may also be used in combination with immune checkpoints to identify the benefits of immunotherapy.Subjects: Bioinformatics, Genomics, Oncology, Thoracic surgery.     

卵巢储备功能降低不孕症中西医结合治疗的理论与临床试验研究探讨

卵巢储备功能降低(DOR)导致的不孕症业已成为生殖健康领域的难题,引起了国内外学者的广泛关注,其根本病机为肾精亏虚。中医药治疗不孕症历史悠久、经验丰富,针对DOR不孕症,从肾论治。将中西医治疗思想相结合,辨病论治与辨证论治结合,采纳中医专病通治方的理念,确定补肾养血、疏肝健脾的治法治则,组方遣药,通过中药补肾方加减可多系统、多靶点、多环节调节生殖功能,充分发挥中医药优势。同时,提出"长(卵)排(卵)并调,数量质量并举"假说,临床上采用中西医结合的两阶段疗法,达到增加卵泡数量,改善卵泡质量,促进卵泡发育和排出的效果,有效规范治疗DOR不孕症。     

Learning from the research process: An advanced practitioner reporting radiographer reflective narrative

Research is one of the recognized four pillars of advanced practice. This reflective narrative outlines the radiographer author's critical thoughts throughout the completion of the research modules for an MSc in Clinical reporting. The journey is followed from formative stages through to completion. Skills are developed in determining a research subject, literature searching, navigating ethics, conducting research and dissemination. Throughout the process, as well as producing a published piece of research, the learning contributes to the remaining three pillars of advanced practice (Leadership, Clinical practice and Education), ultimately improving service to the patient.