Objective To investigate the causes and prevention of postpartum hemorrhage. Methods 84 cases with postpartum hemorrhage were analyzed. Results The main cause of postpartum hemorrhage was involved in poor contraction of uterus; The second cause was concerned with placenta; There was higher rate of postpartum hemorrhage after caesarean section than vaginal delivery. Conclusion It was necessary for preventing postpartum hemorrhage to strengthen antenatalcare, improve labor observe, decrease caesarean section.

Cardiovascular disease is a severe threat to human health and life. Among many risk factors of cardiovascular disease, genetic or gene-based ones are drawing more and more attention in recent years. Accumulated evidence has demonstrated that the loss or mutation of ataxia telangiectasia mutated (ATM) gene can result in DNA damage repair dysfunctions, telomere shortening, decreased antioxidant capacity, insulin resistance, increased lipid levels, etc., and thus can promote the occurrence of cardiovascular risk factors, such as aging, atherosclerosis and metabolic syndrome. In this review, we discusses the possible mechanisms between ATM gene and cardiovascular risk factors, which could be helpful to the related research and clinical application.
Aging ; Ataxia Telangiectasia Mutated Proteins ; genetics ; Cardiovascular Diseases ; genetics ; DNA Damage ; DNA Repair ; Humans ; Mutation ; Risk Factors

Objective To evaluate the effect of mind mapping on adverse effects caused by medication via patient control alagesia pump(PCA).Methods One hundred and seventy-nine patients with PCA pump after operation were divided into control group(n=90)and observation group(n=89)according to the admission time.The observation group was nursed with mind mapping and the control group with routine method. The incidences of adverse effects caused by medication via PCA pump were compared between the two groups.Result The incidences of adverse effect in the observation group and the control group were 19.1%and 32.2%respectively,with statistical significance(P<0.05).Conclusion Nursing with mind mapping for medication via PAC pump can improve nurses’clinical ability in observation and nursing and therefore effectively prevent and deal with adverse effect caused by medication via PCA pump to relieve patients’pain and improve nursing quality.

This article reviews the concept, assessment tools, research status and influencing factors of nurses' comfort with touch, and introduces relevant researches on the touch comfort at home and abroad, so as to provide a reference for managers to improve nurses' comfort with touch for further research.

Genome-scale metabolomics analysis is increasingly used for pathway and function dis-covery in the post-genomics era.The great potential offered by developed mass spectrometry(MS)-based technologies has been hindered,since only a small portion of detected metabolites were iden-tifiable so far.To address the critical issue of low identification coverage in metabolomics,we adopted a deep metabolomics analysis strategy by integrating advanced algorithms and expanded reference databases.The experimental reference spectra and in silico reference spectra were adopted to facilitate the structural annotation.To further characterize the structure of metabolites,two approaches were incorporated into our strategy,i.e.,structural motif search combined with neutral loss scanning and metabolite association network.Untargeted metabolomics analysis was performed on 150 rice cultivars using ultra-performance liquid chromatography coupled with quadrupole-Orbitrap MS.Consequently,a total of 1939 out of 4491 metabolite features in the MS/MS spectral tag(MS2T)library were annotated,representing an extension of annotation coverage by an order of magnitude in rice.The differential accumulation patterns of flavonoids between indica and japon-ica cultivars were revealed,especially O-sulfated flavonoids.A series of closely-related flavonolignans were characterized,adding further evidence for the crucial role of tricin-oligolignols in lignification.Our study provides an important protocol for exploring phytochemical diversity in other plant species.

Osteoporosis is a chronic skeletal disease characterized by low bone mass， destruction of bone tissue microarchitecture， and imbalance of bone homeostasis， leading to increased bone fragility and increased risk of fractures. Oxidative stress caused by the disruption of the balance between excess reactive oxygen species （ROS） and the anti-oxidative system is an important factor in the occurrence and progression of osteoporosis. Nuclear factor E₂-related factor 2 （Nrf2）/heme oxygenase-1 （HO-1） is an important anti-oxidative stress pathway. Nrf2 is a primary factor in regulating cellular oxidative stress. Activating Nrf2 can stimulate the expression of HO-1. HO-1 is a key enzyme whose metabolites are bile green Oxygen， carbon monoxide， and free iron. The metabolites can scavenge ROS， thereby exerting an antioxidant effect in cells. At present， domestic and foreign scholars have reported that the Nrf2/HO-1 signaling pathway is closely related to the occurrence and development of osteoporosis and the mechanism of drugs. Chinese medicine can effectively solve the insufficiency of western medicine with multi-target， multi-channel， and multi-level advantages. Chinese medicine can resist oxidative stress， inflammatory response， and apoptosis by regulating the Nrf2/HO-1 signaling pathway， thus treating osteoporosis. This article reviewed the relationship between Nrf2/HO-1 signaling pathway and its key target protein factors and osteoporosis， to clarify the important role of the Nrf2/HO-1 signaling pathway in osteoporosis. At the same time， a systematic summary of Chinese medicines targeting and regulating the Nrf2/HO-1 signaling pathway for the treatment of osteoporosis was conducted， to provide a theoretical basis for further precise treatment of osteoporosis.