Imagita H.,Kio University |
Ogaki M.,Heisei Memorial Hospital |
Fukuoka H.,Kishiwada Eishinkai Hospital |
Yamada T.,Kishima Hon in Hospital |
And 3 more authors.
Biomedical Research (Japan) | Year: 2013
The purpose of this study was to determine the physiological and biochemical properties of hindlimb muscles after hypoventilation (HPO) induced by bilateral phrenic nerve denervation. Male Wistar rats (10 weeks-old) underwent HPO by the phrenic nerve denervation at the cervical level or sham surgery. Analyses were performed 4, 8, and 12 weeks after the surgery. The myosin heavy chain (MHC) isoform profile and in vitro isometric contractile properties of the soleus (SOL) and extensor digitrum longus muscles (EDL) were analyzed. From the postoperative period, HPO induced characteristic changes in SpO2 such as hypoventilation disorder. After 12 weeks, significant increases in MHC1 and significant decreases in MHC2a were observed in the MHC isoform composition in SOL. Moreover, significant increases in MHC2a and significant decreases in MHC2b were also observed in the MHC isoform composition in EDL muscles in the HPO compared with sham (SHM) group. In our study, the tidal volume after unilateral phrenic nerve denervation decreased by approximately 12%, and that after bilateral phrenic nerve denervation decreased by approximately 35%. We concluded that the reduction in behavioral activity levels in the HPO group may have resulted in changes of the peripheral skeletal muscles as a result of disuse atrophy.
Kunisada K.,Kishiwada Eishinkai Hospital |
Ishikawa H.,Kishiwada Eishinkai Hospital |
Takafuji J.,Kishiwada Eishinkai Hospital |
Komuta K.,Osaka Police Hospital
Japanese Journal of Cancer and Chemotherapy | Year: 2013
In 2009, a 91-year-old man with renal dysfunction was detected with a small nodule in the left pulmonary field. The nodule was found to have gradually increased in size by April, 2010. A trans-bronchial lung biopsy (TBLB) and computed tomography (CT) revealed squamous cell lung cancer and stage IV (a tumor was found on the right side as well), respectively. Systemic chemotherapy was not administered because of the advanced age of the patient and mild renal dysfunction. We obtained informed consent from the patient and his family before trans-arterial chemo-embolization (TACE) was performed. No side effects were observed either during or after treatment. Although his visits to our hospital stopped, he sought treatment for a cold 8 months after TACE. CT showed 87% shrinkage of the tumor shadow. This method could be a new therapeutic option for non-small cell lung cancer with little side effects, particularly in older patients or those with pulmonary complications.