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Biomedical subjects

Shuji Kishida

Publications and source records attributed to Shuji Kishida.

14 recordsLinked to original sources

Successful steroid treatment of acquired idiopathic partial hypohidrosis.

The pathogenesis of idiopathic-acquired hypohidrosis remains unknown, and no specific causes have yet been established. We report a 34-year-old man with acquired idiopathic hypohidrosis successfully treated with prednisolone. The patient noticed heat intolerance and hypohidrosis of the pectoral and back during the summer. No systemic disease or neurological findings were identified. Eccrine sweat glands displayed infiltration by inflammatory cells, with immunoglobulin G and C3 deposition in the basement membrane. Steroid therapy improved the hypohidrosis. An immunological pathogenesis could be a major factor in idiopathic-acquired hypohidrosis.

Adult↗

Characterization of the VP1 loop mutations widespread among JC polyomavirus isolates associated with progressive multifocal leukoencephalopathy.

Recently, we found that JC polyomavirus (JCPyV) associated with progressive multifocal leukoencephalopathy (PML) frequently undergoes amino acid substitutions (designated VP1 loop mutations) in the outer loops of the major capsid protein, VP1. To further characterize the mutations, we analyzed the VP1 region of the JCPyV genome in brain-tissue or cerebrospinal fluid samples from 20 PML patients. VP1 loop mutations occurred far more frequently than silent mutations. Polymorphic residues were essentially restricted to three positions (55, 60, and 66) within the BC loop, one (123) within the DE loop, and three (265, 267, and 269) within the HI loop. The mutations at most polymorphic residues showed a trend toward a change to specific amino acids. Finally, we presented evidence that the VP1 loop mutations were associated with the progression of PML. These findings should form the basis for elucidating the biological significance of the VP1 loop mutations.

Autopsy↗

Herpetic lumbosacral radiculoneuropathy in patients with human immunodeficiency virus infection.

We report 4 cases of human immunodeficiency virus infection associated with lumbosacral radicular dysfunction and urinary retention. Three of these cases had the so-called Elsberg syndrome in that their symptoms were associated with genital herpes. In 1 case, different herpes simplex virus types were isolated from the cerebrospinal fluid and genital swabs. Lumbosacral radiculoneuropathy with urinary retention caused by herpes viruses can develop not only with an initial genital herpes infection, but also due to reactivation of a latent herpes virus.

Adult↗

Meningeal hematopoiesis following radiation myelitis in a hematopoietic stem-cell transplant recipient.

Extramedullary meningeal hematopoiesis (EMH) represents an uncommon finding after stem-cell transplantation. We describe the case of an allogeneic bone marrow transplantation (BMT) recipient who developed EMH 1 month after radiation myelitis had been diagnosed. A 39-year-old man with multiple myeloma underwent matched unrelated BMT following a myeloablative conditioning regimen of cyclophosphamide and total-body irradiation (200 cGyx6). This was followed by delivery of 40 Gy of involved-field radiation to an extramedullary plasmacytoma compressing the spinal cord. Although transplantation went extremely well, the patient developed radiation myelitis 7 months after transplantation, and EMH ensued 1 month later. Because the patient was not in a disease state known to cause EMH, it is tempting to speculate that radiation-related neural injuries might cause donor cells to migrate to the central nervous system.

Adult↗

Delayed ischemic stroke associated with methamphetamine use.

A 19-year-old woman had right occipital infarction 3 months after she had injected methamphetamine. No other possible causes of stroke could be found in this case. Magnetic resonance angiography revealed beading of the right posterior cerebral artery, which suggested vasculitis. Her symptoms were right-sided headache, left superior quadrant hemianopia, and left hypesthesia, which gradually improved without any treatment. Methamphetamine has been known to cause hemorrhagic and ischemic stroke relatively soon after administration. We report here that methamphetamine may also cause chronic cerebral vasculitis and delayed ischemic stroke.

Adult↗

[Clinical investigation of the 8 cases with AIDS (acquired immunodeficiency syndrome)-associated progressive multifocal leukoencephalopathy (PML)].

We experienced 8 cases of progressive multifocal leukoencephalopathy (PML) complicated by human immunodeficiency virus (HIV) type-1 infection from 1985 to 1999. These cases showed dementia, bradykinesia, dysarthria, hemiparesis, and so on. All of the cases were severely immunocompromised hosts, because none had more than 150/mm3 CD4 + lymphocytes; indeed, 5 of the cases were below 20/mm3. Other neurological complications except PML were primary CNS lymphoma, HIV encephalitis, and CMV encephalitis. The mean life durations was 7.6 months after the first symptom appeared, for all but one of the patients; the exceptional patient lived for 24 months after. Autopsy studies of the central nervous systems were performed for 7 cases, all of which showed extensive demyelinating lesions of the white matter, and in some cases these extended into the spinal cord. In contrast to Western countries, in Japan there have been few reports of AIDS-associated PML. Thus, this report was thought to be important here.

Acquired Immunodeficiency Syndrome↗

Incapacitating lower limb pain syndrome in cord blood stem cell transplant recipients with calcineurin inhibitor.

Calcineurin-inhibitor induced pain syndrome (CIPS) is a newly described entity with a characteristic feature of sudden onset of severe lower limb pain, and high levels of cyclosporine or tacrolimus may be involved in the pathogenesis. This syndrome is rarely seen in recipients of hematopoietic stem cell transplantation (HSCT) compared with other organ transplant recipients, however, heightened awareness of this complication after HSCT may be needed for hematologists, as misdiagnosis can result in catastrophic consequences. We report herein two cases of lower limb pain syndrome, with some clinical features resembling CIPS, occurring during the early phase of cord blood stem cell transplantation for hematological malignancy.

Adolescent↗

[Immunosuppressive-associated encephalopathy in bone marrow transplant recipients].

We studied clinical features of immunosuppressive (cyclosporine, tacrolimus) associated encephalopathy in bone marrow transplant patients. 378 cases of allogeneic bone marrow transplant recipients over fifteen years old of chronic and acute leukemia (CML, ANLL, ALL) (n = 311), myelodysplastic syndrome (MDS) (n = 42) and severe aplastic anemia (SAA) (n = 25) were investigated. Immunosuppressive associated encephalopathy occurred in 12 cases. The rate of incidence was significantly higher in SAA and MDS (7 cases) than in leukemia. The cases which showed typical radiological abnormality in MRI were limited in SAA and hypoplastic MDS. 10 cases died, which revealed worse than an overall survival rate of recipients without immunosupressive-associated encephalopathy. 5 of 7 cases in SAA and MDS had taken cyclosporine as treatment of the disease before bone marrow transplantation and that might influence the incidence of encephalopathy.

Acute Disease↗

[A case of Crow-Fukase syndrome showing improvement following excision and irradiation of bone lesions].

A 57-year-old woman suffering from pleural and pericardial effusion, pulmonary hypertention, lymphadenopathy, hepatosplenomegaly, edema, hypertrichosis, small hemangioma and polyneuropathy was diagnosed as Crow-Fukase syndrome. Osteoctomy of the left second rib and irradiation of this rib and the left iliac bone were performed. Serum vascular endothelial growth factor (VEGF) level decreased to less than one-half the level before the operation (from 5,180 to 2,150 pg/ml). Immediately after the operation, pleural and pericardial effusions due to hyperpenetration improved, and polyneuropathy and hypertrichosis due to hypervasularity also gradually improved. The resected lesion was histopathologically found to be of a plasmacytoma of the IgG lambda type. Since the level of VEGF in the tissue specimen was much lower (116 pg/ml) than that in the serum, VEGF could not have been produced by the plasmacytoma.

Bone Neoplasms↗

[The neurology of HIV infection: clinical features of HIV encephalopathy and future problems in the HAART era].

Since the introduction of highly active antiretroviral therapy (HAART), which has been available for most patients in developed world, HIV/AIDS has become a chronic disorder with dramatic reduction in mortality and morbidity due to HIV/AIDS and related diseases. However, from the nationwide survey of HIV-related neurological complications and analysis of our series of total 290 AIDS patients before and after HAART introduction, main neurological complications and opportunistic infections of AIDS patients remain unchanged after the introduction of HAART in Japan. It is crucial that we let a people know that the prevention and treatment of HIV infection is impotant. Recent epidemiological studies show that neurological complications still remain in an important cause of disability, although their relative incidence as their course and clinical presentation have been modified. It is expected that the clinical features of HIV encephalopathy will change particularly from severe subacute progressive dementia in the terminal stage of HIV infection into different patterns of dementia, for example slowly progressive neurological deficits occurring without immune deficiency under HAART.

AIDS Dementia Complex↗

[A clinical study of pachymeningitis].

We report five patients with cranial and spinal pachymeningitis not associated infections or tumors. The underlying causes of pachymeningitis in four patients were Sjögren syndrome, Wegener's granulomatosis, microscopic polyangitis, and dermatomyositis, respectively. In one patient, the cause was unknown. Cerebrospinal fluid analysis showed an increase in cells in only one patient and elevated protein levels in three patients. Blood test revealed an inflammatory disease except in one patient. The anti-nuclear antibody was present in four of five patients examined, and P-ANCA was present in two out of four patients. The prognosis was good except in one patient of Wegener's granulomatosis. We reviewed 48 previously reported cases of pachymeningitis were not associated infections or tumors. The lesions of pachymeningitis were more localized in the cranial dura than the spinal dura, and many cases had immunological abnormalities.

Adult↗