Asian Science Citation Index is committed to provide an authoritative, trusted and significant information by the coverage of the most important and influential journals to meet the needs of the global scientific community.  
ASCI Database
308-Lasani Town,
Sargodha Road,
Faisalabad, Pakistan
Fax: +92-41-8815544
Contact Via Web
Suggest a Journal
 
Articles by A Richardson
Total Records ( 2 ) for A Richardson
  J Burt , C Shipman , A Richardson , E Ream and J. Addington Hall
 

Background: there is limited understanding of symptoms and care in the last few months of life for adults dying from causes other than cancer.

Objective: the aim of the study is to compare the experiences in the community in the last 3 months of life of older adults dying from cancer and non-cancer causes.

Design: the study employed a retrospective cross-sectional survey of bereaved relatives.

Setting: the survey took place across eight cancer networks in England.

Subjects: a random sample of 1,266 adults who registered a death occurring in someone aged 65 and over between August 2002 and February 2004 was drawn.

Methods: VOICES (Views of Informal Carers—Evaluation of Services) questionnaires were sent to sampled informants by the Office for National Statistics 3–9 months after the registration of the death. Differences in the reported experiences of cancer and non-cancer decedents in symptoms, treatment and care were assessed using Pearson’s chi square test.

Results: cancer decedents were significantly more likely than non-cancer decedents to have had pain (93 vs 79%, P < 0.001), nausea and vomiting (62 vs 40%, P < 0.001) and constipation (74 vs 66%, P = 0.03), whilst a greater proportion of non-cancer decedents experienced breathlessness (74 vs 65%, P = 0.006). Across both groups, less than half of the decedents were reported to have received treatment which completely relieved their symptoms some or all of the time. There were significant variations in the receipt of district nursing, general practitioner care and other health and social care and the reported quality of this care, for decedents dying of cancer and non-cancer causes. Further, informants for cancer deaths reported greater satisfaction with support received.

Conclusions: there are important differences in the reported experiences of older adults dying from cancer and non-cancer causes in the last months of life, independent of age.

  M. S Lustgarten , Y. C Jang , Y Liu , F. L Muller , W Qi , M Steinhelper , S. V Brooks , L Larkin , T Shimizu , T Shirasawa , L. M McManus , A Bhattacharya , A Richardson and H. Van Remmen
 

In vitro studies of isolated skeletal muscle have shown that oxidative stress is limiting with respect to contractile function. Mitochondria are a potential source of muscle function-limiting oxidants. To test the hypothesis that skeletal muscle-specific mitochondrial oxidative stress is sufficient to limit muscle function, we bred mice expressing Cre recombinase driven by the promoter for the inhibitory subunit of troponin (TnIFast-iCre) with mice containing a floxed Sod2 (Sod2fl/fl) allele. Mn-SOD activity was reduced by 82% in glycolytic (mainly type II) muscle fiber homogenates from young TnIFastCreSod2fl/fl mice. Furthermore, Mn-SOD content was reduced by 70% only in type IIB muscle fibers. Aconitase activity was decreased by 56%, which suggests an increase in mitochondrial matrix superoxide. Mitochondrial superoxide release was elevated more than twofold by mitochondria isolated from glycolytic skeletal muscle in TnIFastCreSod2fl/fl mice. In contrast, the rate of mitochondrial H2O2 production was reduced by 33%, and only during respiration with complex II substrate. F2-isoprostanes were increased by 36% in tibialis anterior muscles isolated from TnIFastCreSod2fl/fl mice. Elevated glycolytic muscle-specific mitochondrial oxidative stress and damage in TnIFastCreSod2fl/fl mice were associated with a decreased ability of the extensor digitorum longus and gastrocnemius muscles to produce contractile force as a function of time, whereas force production by the soleus muscle was unaffected. TnIFastCreSod2fl/fl mice ran 55% less distance on a treadmill than wild-type mice. Collectively, these data suggest that elevated mitochondrial oxidative stress and damage in glycolytic muscle fibers are sufficient to reduce contractile muscle function and aerobic exercise capacity.

 
 
 
Copyright   |   Desclaimer   |    Privacy Policy   |   Browsers   |   Accessibility