OBJECTIVECadmium is known to affect the vascular tone of isolated blood vesselsin vitro and the arterial pressure of ratsin vivo. However, the mechanisms of cadmium actions on the vascular system have not been clarified. To elucidate the actions of cadmium on vascular tonus, effects of cadmium on vasocontractile and vasorelaxant responsesin vitro were investigated using aortic strips isolated from rats.

METHODSAortic strips isolated from male Wistar rats were incubated with CdCl(2) (10μM) for 24 hr, washed with fresh CdCl(2)-free medium, and then used for measurement of isometric tension and Western blot analysis of eNOS (endothelial nitric oxide synthase) and iNOS (inducible nitric oxide synthase).

RESULTSIn the aortas pretreated with cadmiumin vitro, the contractile response to phenylephrine was significantly higher than that in the control aortic strips pretreated with a vehicle. The sodium nitroprusside-induced relaxing response was significantly higher in the aortic strips pretreated with cadmium for 24 hr, compared with that in the control pretreated with a vehicle. The isoproterenol-induced relaxing response was also significantly higher in the cadmium-accumulated aortic strips.In vitro cadmium treatment slightly but not significantly increased the acetylcholine-induced relaxation of the aortic strips. Cadmium treatment induced expression of iNOS and significantly increased expression of eNOS in the aortic strips, while it did not affect expression of β-actin.

CONCLUSIONSCadmium treatmentin vitro augmented the α1 adrenoceptor-mediated contractile response, even though eNOS and iNOS were upregulated by cadmium treatment. NO-induced and β-adrenoceptor-mediated relaxing responses were also augmented by cadmium treatment. These results suggest that both vasocontractile and vasorelaxing responses are augmented in cadmium-accumulated aortas.

We report five cases of painful swelling caused by hymenoptera stings and centipede bites treated with ourengedokuto and inchingoreisan soon after the time of injury. The first case was a 70-year-old male. He was stung by a hornet on the left hand 30 minutes prior. The second case was a 45-year-old male. He was stung by a hornet on the left face 20 minutes prior. The third case was a 55-year-old male. He was stung by a hornet on the left lower thigh 10 minutes prior. The fourth case was a 39-year-old male. He was stung by a hornet on the right thigh 60 minutes prior. The fifth case was a 35-year-old male. He was bitten by a centipede on the right first toe 20 minutes prior. All cases received Kampo therapies immediately and continued them every few hours. In all cases, their pain, redness and swelling at the site of injury were relieved by the next day. We consider Kampo therapies can contribute to the healing of hymenoptera stings and centipede bites at an early stage.

Acute encephalopathy is classified into multiple syndromes, such as acute encephalopathy with biphasic seizures and late reduced diffusion (AESD), clinically mild encephalitis/encephalopathy with a reversible splenial lesion (MERS) and acute necrotizing encephalopathy (ANE), characterized radiologically by lesions in the cerebral subcortical white matter, splenium of the corpus callosum and bilateral thalami, respectively. We described a previously healthy 8-year-old boy who had febrile and biphasic seizures, and encephalopathy. MRI showed abnormal signal intensity in the corpus callosum on day 2 and cerebral subcortical white matter and bilateral thalamic lesions on day 8. This is the first case of acute encephalopathy in which callosal, subcortical and thalamic lesions co-existed. The clinical course of this case was typical for AESD, atypical for MERS, and different from that of ANE.
Brain Diseases