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RISS 인기검색어
- 검색키워드
- 저자 : Hannah Lo (검색결과 3 건)
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Risk factors for child physical abuse and neglect among Chinese young mothers
Lo, Camilla K.M.,Tung, Keith T.S.,Chan, Ko Ling,Yip, Paul S.F.,Lau, Joseph T.F.,Wong, Wilfred H.S.,Wong, Rosa S.,Tsang, Anita M.C.,Tsang, Hannah Y.H.,Tso, Winnie W.Y.,Ip, Patrick Elsevier 2017 Child abuse & neglect Vol.67 No.-
<P><B>Abstract</B></P> <P>Although studies have reported a linkage between young pregnancy and child maltreatment risk, it is still unclear about what factors place young mothers at greater risk of maltreating their child in Chinese context. Based on the socio-ecological model, risk factors in 4 domains: family background/structure, maternal stressors, mother-child interaction, and child behavioral issue in relation to physical assault, neglect, both physical assault and neglect, and either physical assault or neglect among Chinese young mothers in Hong Kong were assessed. 392 young mothers were recruited from an integrated supportive program for young mothers. The mean age of mothers at delivery was 21.8 (SD=3.0) and 52.3% were married. Individual risk factors and cumulative risk domains related to different child maltreatment groups were examined. Our results show both overlapping and unique risk factors across the domains associated with physical assault and neglect. Further, young families exposed to higher number of risk domains show higher rates for physical assault and neglect, co-occurrence of physical assault and neglect, and either form of maltreatment. In addition, various risk domains were found to be particularly important for different forms of maltreatment: family background/structure domain was found to be an important risk domain for neglect; mother-child interaction domain for both physical assault and neglect; family background/structure and maternal stressors domains for either physical assault or neglect. Closer examination of a subgroup of adolescent mothers aged 18 and below shows that family background/structure was an important risk domain for this group.</P>
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Role of matrix metalloproteinases in delayed cortical responses after stroke
Zhao, Bing-Qiao,Wang, Sophia,Kim, Hahn-Young,Storrie, Hannah,Rosen, Bruce R,Mooney, David J,Wang, Xiaoying,Lo, Eng H Nature Publishing Group 2006 Nature medicine Vol.12 No.4
Matrix metalloproteinases (MMPs) are zinc-endopeptidases with multifactorial actions in central nervous system (CNS) physiology and pathology. Accumulating data suggest that MMPs have a deleterious role in stroke. By degrading neurovascular matrix, MMPs promote injury of the blood-brain barrier, edema and hemorrhage. By disrupting cell-matrix signaling and homeostasis, MMPs trigger brain cell death. Hence, there is a movement toward the development of MMP inhibitors for acute stroke therapy. But MMPs may have a different role during delayed phases after stroke. Because MMPs modulate brain matrix, they may mediate beneficial plasticity and remodeling during stroke recovery. Here, we show that MMPs participate in delayed cortical responses after focal cerebral ischemia in rats. MMP-9 is upregulated in peri-infarct cortex at 7–14 days after stroke and is colocalized with markers of neurovascular remodeling. Treatment with MMP inhibitors at 7 days after stroke suppresses neurovascular remodeling, increases ischemic brain injury and impairs functional recovery at 14 days. MMP processing of bioavailable VEGF may be involved because inhibition of MMPs reduces endogenous VEGF signals, whereas additional treatment with exogenous VEGF prevents MMP inhibitor–induced worsening of infarction. These data suggest that, contrary to MMP inhibitor therapies for acute stroke, strategies that modulate MMPs may be needed for promoting stroke recovery.
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Global Impact of the COVID-19 Pandemic on Cerebral Venous Thrombosis and Mortality
Thanh N. Nguyen,Muhammad M. Qureshi,Piers Klein,Hiroshi Yamagami,Mohamad Abdalkader,Robert Mikulik,Anvitha Sathya,Ossama Yassin Mansour,Anna Czlonkowska,Hannah Lo,Thalia S. Field,Andreas Charidimou,So 대한뇌졸중학회 2022 Journal of stroke Vol.24 No.2
Background and Purpose Recent studies suggested an increased incidence of cerebral venous thrombosis (CVT) during the coronavirus disease 2019 (COVID-19) pandemic. We evaluated the volume of CVT hospitalization and in-hospital mortality during the 1st year of the COVID-19 pandemic compared to the preceding year. Methods We conducted a cross-sectional retrospective study of 171 stroke centers from 49 countries. We recorded COVID-19 admission volumes, CVT hospitalization, and CVT in-hospital mortality from January 1, 2019, to May 31, 2021. CVT diagnoses were identified by International Classification of Disease-10 (ICD-10) codes or stroke databases. We additionally sought to compare the same metrics in the first 5 months of 2021 compared to the corresponding months in 2019 and 2020 (ClinicalTrials.gov Identifier: NCT04934020). Results There were 2,313 CVT admissions across the 1-year pre-pandemic (2019) and pandemic year (2020); no differences in CVT volume or CVT mortality were observed. During the first 5 months of 2021, there was an increase in CVT volumes compared to 2019 (27.5%; 95% confidence interval [CI], 24.2 to 32.0; P<0.0001) and 2020 (41.4%; 95% CI, 37.0 to 46.0; P<0.0001). A COVID-19 diagnosis was present in 7.6% (132/1,738) of CVT hospitalizations. CVT was present in 0.04% (103/292,080) of COVID-19 hospitalizations. During the first pandemic year, CVT mortality was higher in patients who were COVID positive compared to COVID negative patients (8/53 [15.0%] vs. 41/910 [4.5%], P=0.004). There was an increase in CVT mortality during the first 5 months of pandemic years 2020 and 2021 compared to the first 5 months of the pre-pandemic year 2019 (2019 vs. 2020: 2.26% vs. 4.74%, P=0.05; 2019 vs. 2021: 2.26% vs. 4.99%, P=0.03). In the first 5 months of 2021, there were 26 cases of vaccine-induced immune thrombotic thrombocytopenia (VITT), resulting in six deaths. Conclusions During the 1st year of the COVID-19 pandemic, CVT hospitalization volume and CVT in-hospital mortality did not change compared to the prior year. COVID-19 diagnosis was associated with higher CVT in-hospital mortality. During the first 5 months of 2021, there was an increase in CVT hospitalization volume and increase in CVT-related mortality, partially attributable to VITT.
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