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Aizawa H, Niimura M. Adrenal androgen abnormalities in women with late onset and persistent acne. Arch Dermatol Res 1993; 284:451-5. [PMID: 8466282 DOI: 10.1007/bf00373355] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Androgens are an essential prerequisite for the development of acne. The present study was undertaken to characterize the androgen status of women with late onset and persistent acne only and, using the dexamethasone (dex) suppression test, to identify the source(s) of the androgen excess. We measured serum levels of total testosterone (T), free testosterone (FT), androstenedione (delta 4A), dihydrotestosterone (DHT), dehydroepiandrosterone sulphate (DHEA-S) and sex hormone binding globulin (SHBG) in 34 healthy control subjects, in 34 women with mild acne and in 29 women with moderate or severe acne. Serum FT, DHT and DHEA-S levels in patients of both acne groups were significantly higher than those in the control subjects. The other hormone levels showed no significant differences between patients and control subjects, and there were no significant differences between the two acne groups in any of the androgen levels. In order to evaluate the ovarian and adrenal contributions to serum androgens in the acne patients, the serum levels of delta 4A, T, DHT and DHEA-S were measured prior to and following 2 weeks of dex therapy. Following the dex test, the DHT and T of adrenal origin were significantly higher in the acne patients than in the control subjects. These results suggest that, in acne patients, hyperandrogenaemia is likely to develop as a result of adrenal androgen excess. In addition, since abnormally high androgen levels are frequently seen in late onset and persist acne, it seems that this condition is likely to be a sign of hyperandrogenism.
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Aizawa H, Niimura M, Kon Y. Influence of oral metronidazole on the endocrine milieu and sebum excretion rate. J Dermatol 1992; 19:959-63. [PMID: 1293188 DOI: 10.1111/j.1346-8138.1992.tb03812.x] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
As part of a study of the mechanism of metronidazole's efficacy in the treatment of acne and rosacea, its effects on the endocrine milieu and sebum excretion rate were assessed. Thirteen healthy males received oral metronidazole treatment (500 mg/day) for 4 weeks. Serum sex hormone levels were determined in all 13 subjects and the sebum excretion rate was determined in seven of them, before and after treatment. We measured serum levels of estrone (E1), estradiol (E2), total testosterone (T), free testosterone (FT), dihydrotestosterone (DHT), dehydroepiandrosterone sulfate (DHEA-S), and sex hormone-binding globulin (SHBG). There were no significant changes in E1, T, FT, DHT, or SHBG levels, but E2 and DHEA-S levels decreased significantly after treatment. In all seven subjects in whom the sebum excretion rates were determined, the amount of facial skin surface lipids decreased significantly after treatment. These results suggest that metronidazole exerts its clinical effects through suppressing the sebum excretion by a mechanism other than anti-androgenic action.
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Abstract
The neurofibromatoses are a heterogenous set of conditions having clinical manifestations such as skin, nervous system, bone and eye disorders. The clinical pictures of the patients will obviously differ, and there is considerable variation of manifestations even within a family. During the last twenty-five years, one thousand and two hundred patients with neurofibromatosis were personally examined. Almost all our patients had classical von Recklinghausen disease. But in addition to these cases, there are 28 cases of NF-2 and 10 patients which we call multiple neurilemmomatosis. Also, there are related groups of patients with conditions which were not neurofibromatosis, such as 40 cases of localized multiple neurofibromas and 61 cases of localized café-au-lait spots. The features of neurofibromatosis in Japan are not different, compared with foreign countries, except increased pigmentation is more common. In addition to café-au-lait spots, some 20% of Japanese neurofibromatosis patients have pigmentary conditions which I termed hairy fuscoceruleus spots. These spots are blue-brown in colour, and one can see coarse hairs in them. Our recent study indicates that the patients with neurilemmomatosis have loss of heterozygosity of chromosome 22, the same position as the site of patients with NF-2. Neurilemmomatosis may be classified as an NF-2 without acoustic tumors.
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Abstract
In order to evaluate the hormonal milieu in young men with severe acne, we measured serum estradiol (E2), total testosterone (T), free testosterone (FT), dihydrotestosterone (DHT), dehydroepiandrosterone sulfate (DHEA-S), and sex hormone binding globulin (SHBG) levels in sixteen male patients aged 20-30 years with severe acne, including twelve cases of nodular-cystic acne, and in seventeen age-matched normal controls. There were no significant differences in the serum levels of T, FT, DHT, DHEA-S, or SHBG between the patients and the controls, but serum E2 was significantly higher in the patient population. Thus, the hemodynamics of serum androgens in male patients with acne do not seem to differ significantly from that of normal controls. Elevated E2 levels might affect the inflammatory response of acne vulgaris through the release of thymic hormones, as reported in the literature.
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Niimura M. [Skin cancer and virus]. Hum Cell 1992; 5:160-6. [PMID: 1327092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Human papillomaviruses (HPV) generally associated with benign skin and anogenital warts. Because several of skin cancers were found to contain HPV-DNA, it has been speculated that certain types of HPV could be specifically associated with cancers. Although HPV-DNAs are not isolated from most of skin cancers, they are often isolated from penile cancers, vulval cancers and anogenital Bowen's diseases. Patients with epidermodysplasia verruciformis start to suffer from disseminated incurable warts during their childhood, and some of these benign lesions often convert to skin cancer in adulthood. Although the disease is very rare, HPV may also play a role in malignant transformation in epidermodysplasia verruciformis. More than 60 types of HPVs distinguished by molecular hybridization techniques. The type of HPV determines the clinical picture of wart and natural fate of HPV-associated lesion. There are two groups of HPVs, which are benign types and malignant types. Viral DNA of malignant type of HPV transforms human keratinocytes in vitro, and the transforming activity has been mapped to the E6 and E7 genes.
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Abstract
Spironolactone at 50 mg/day was orally administered for four weeks to 13 male patients with rosacea in order to observe its clinical effectiveness. Serum estradiol (E2), 17OH-progesterone (17OH-P4), testosterone (T), androstenedione (delta 4 A), dihydrotestosterone (DHT), dehydro-epiandrosterone sulfate (DHEA-S) were measured prior to and after treatment. Although there were no significant changes in T, delta 4A, DHT, or DHEA-S, the serum levels of 17OH-P4 increased significantly. E2 tended to increase, although the change was not significant. Two of the 13 patients discontinued spironolactone treatment because of general malaise, but seven of the remaining eleven patients exhibited an improvement in their rosacea. These findings demonstrate that a low dose of spironolactone is effective in the treatment of rosacea in some male patients and suggest that it is possible that changes in the metabolism of sex steroid hormones such as cytochrome p-450 isozymes have some bearing on the etiology of rosacea.
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Erpaiboon P, Mihara I, Niimura M. Lymphomatoid papulosis: clinicopathological comparative study with pityriasis lichenoides et varioliformis acuta. J Dermatol 1991; 18:580-5. [PMID: 1665158 DOI: 10.1111/j.1346-8138.1991.tb03136.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
We have compared the clinical and histopathological features of 6 patients with lymphomatoid papulosis (LP) and 14 patients with pityriasis lichenoides et varioliformis acuta (PLEVA). There were some differences between the clinical features in the two diseases, including the size and appearance of skin lesions and the duration of the course of disease. Ki-1 Ag positive, large, atypical, lymphoid cells were always seen in lymphomatoid papulosis; none of lymphoid cells of pityriasis lichenoides et varioliformis acuta demonstrated this antigen. We conclude that lymphomatoid papulosis and PLEVA, although sharing some common features, should be considered to be different clinical and immunopathological entities.
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Kaspar TA, Wagner RF, Jablonska S, Niimura M, Tyring SK. Prognosis and treatment of advanced squamous cell carcinoma secondary to epidermodysplasia verruciformis: a worldwide analysis of 11 patients. THE JOURNAL OF DERMATOLOGIC SURGERY AND ONCOLOGY 1991; 17:237-40. [PMID: 2005244 DOI: 10.1111/j.1524-4725.1991.tb03637.x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Data were collected from three medical centers in the USA, Poland, and Japan regarding 11 patients with advanced squamous cell carcinoma (SCC) secondary to epidermodysplasia verruciformis (EV). Analysis was conducted regarding primary tumor location, age at onset of EV, age at diagnosis of SCC, treatment of SCC, history of local tumor recurrence, presence of metastases, and age at death. Three of 11 patients developed both lymph node and visceral metastases and the mean patient age at death was 44 years (N = 6) with no patient to date living past 54 years. Mean patient survival time following metastases was 1.7 years (N = 2). Human papilloma virus typing of nine patients was performed. Current controversies regarding the treatment of patients with advanced SCC in the setting of EV are reviewed.
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Hiraoka A, Masaoka T, Nagai K, Horiuchi A, Kanamaru A, Niimura M, Hamada T, Takahashi M. Clinical effect of BV-araU on varicella-zoster virus infection in immunocompromised patients with haematological malignancies. J Antimicrob Chemother 1991; 27:361-7. [PMID: 1645332 DOI: 10.1093/jac/27.3.361] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
We evaluated the treatment of varicella-zoster infection with BV-araU in immuno-compromised patients with haematological malignancies in a randomized controlled study. Comparison was made between doses of 150 and 30 mg/day. For ethical reasons there was no placebo group. The percentage of patients given a 'very effective' rating by both attending physicians and the Evaluation Committee was significantly higher in the 150 mg/day group (56.0%) compared to the 30 mg/day group (15.0%). There was no significant difference in efficacy rate ('very effective' plus 'effective') between the two groups. The incidence of side effects was low (7.8%), all were mild and disappeared on stopping treatment. These results suggest that BV-araU is clinically useful, especially at a dose of 150 mg/day in immunocompromised patients. Further comparative studies between BV-araU and acyclovir or vidarabine are indicated.
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Abstract
Eighty patients with bilateral common warts of the extremities were treated at weekly intervals with intralesional injections of either human fibroblast interferon or placebo. Lyophilized interferon (3 X 10(6) units) was diluted with 3 ml of normal sterile saline matched with identical vials of placebo. Eighty sets of three vials of human fibroblast interferon or placebo were labeled either A or B by a controller who maintained the code until the experiment was completed. Each patient received 0.1 X 10(6) units of interferon into the warts on one side and placebo injections into those on the matching extremity. Warts were measured each week and the progress or lack thereof was scored on a scale of -1 (worse) to 3 (cured). Therapy continued until either at least one extremity had cleared or the patient had received 10 weekly injections. A final evaluation was scored by measuring the total progress of each patient during the study. Sixty-four patients were treated to completion. More than 81% of the interferon-treated extremities were either cured or responded effectively to therapy. Only 17% of the placebo-treated lesions responded in this fashion. A statistical analysis of these data confirms the effectiveness of intralesional interferon therapy. The average number of interferon injections until cure was 5.9 +/- 1.7. No adverse effects were observed. The applications of interferon in patients with epidermodysplasia verruciformis and flat warts were also studied. Intralesional interferon beta was, to a certain degree, effective for benign lesions of epidermodysplasia verruciformis, but systemic treatments were not effective. Subcutaneous interferon beta was, in an uncontrolled study, effective in 45% of patients with flat warts.
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Niimura M. [Postherpetic neuralgia]. NIHON HIFUKA GAKKAI ZASSHI. THE JAPANESE JOURNAL OF DERMATOLOGY 1990; 100:1352-4. [PMID: 2079747] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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Machida H, Ijichi K, Ohta A, Honda M, Niimura M. Antiviral potencies of BV-araU and related nucleoside analogues against varicella-zoster virus in different cell lines. Microbiol Immunol 1990; 34:959-65. [PMID: 1965323 DOI: 10.1111/j.1348-0421.1990.tb01074.x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
1-beta-D-Arabinofuranosyl-E-5-(2-bromovinyl)uracil (BV-araU) and nine other antiherpesviral nucleoside analogues were compared for their potencies against four strains of varicella-zoster virus (VZV) on three different cell lines: HEL cells, Vero cells, and MS cells established from a human malignant schwannoma. In contrast to the activity against herpes simplex virus type 1 previously reported, BV-araU showed extremely marked antiviral activity against VZV even on Vero cells. ED50, 50% plaque reduction dose, of BV-araU for VZV was 0.20-3.1 and 0.14-0.63 ng/ml on Vero cells and on HEL cells, respectively. Potency of BV-araU on MS cells was similar to that on these cell lines. There was not significant variation in anti-VZV activities of other nucleoside analogues on these three different cell lines except a few combinations of VZV strain and test compound.
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Ohta A, Honda M, Niimura M. Establishment and characterization of human malignant schwannoma associated with neurofibromatosis cell line. J Dermatol Sci 1990. [DOI: 10.1016/0923-1811(90)90310-a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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64
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Niimura M, Honda M, Kurata T, Sata T, Sakaoka H, Kawana R, Kawana T, Hidano A, Tamaki K, Hondo R. [Diagnosis of varicella-zoster virus (VZV) infection by using FITC-labeled monoclonal antibodies]. KANSENSHOGAKU ZASSHI. THE JOURNAL OF THE JAPANESE ASSOCIATION FOR INFECTIOUS DISEASES 1990; 64:195-201. [PMID: 2159967 DOI: 10.11150/kansenshogakuzasshi1970.64.195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Anti-varicella zoster virus (VZV) mouse monoclonal antibodies conjugated with fluorescein isothiocyanate were evaluated for their usefulness as a practical diagnostic tool in the clinical field by examining cells infected with isolated herpes viruses and 431 clinical samples. The kit stained clearly the cells infected with 14 isolated VZV strains without cross reaction to 15 isolated herpes simplex virus type-1 strains (HSV-1) and 14 type-2 (HSV-2) strains. In clinical specimens, viral antigens of VZV were detected in 92/105 (87.6%) cases of varicella and in 176/190 (92.6%) cases of herpes zoster. Specific fluorescence of VZV was also observed in 5 out of 96 cases diagnosed as HSV infections, although these samples had no specific reaction to HSV when tested by the commercially available diagnostic kit. In 24 cases which could not be clinically diagnosed as herpes zoster or herpes simplex, the VZV antigen was demonstrated in 9 cases. All 109 VZV-positive cases in virus isolation by culture were also judged VZV-antigen positive by the kit, while all 69 HSV-positive cases in virus isolation were VZV-antigen negative. Furthermore, the VZV antigen was detected by the kit in 53/60 clinical diagnoses of varicella or herpes zoster without successful virus isolation. These results clearly indicate the usefulness of the kit as a practical VZV diagnostic reagent, especially in terms of specific sensitivity and easy technical manipulation.
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Niimura M. A double-blind clinical study in patients with herpes zoster to establish YN-72 (Brovavir) dose. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1990; 278:267-75. [PMID: 2288297 DOI: 10.1007/978-1-4684-5853-4_27] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Double-blind clinical trials were performed with a placebo to determine the optimum dose of YN-72 in patients with herpes zoster. YN-72 at 10, 50, and 100 mg was administered orally three times daily for 7 days. A total of 226 patients entered the present trial. Six of the 226 patients were excluded from statistical analysis of data. Furthermore, seven patients were excluded from the analysis for efficacy and usefulness, and included in the analysis for safety. The numbers of patients included in the analyses for efficacy and usefulness were 50 in the placebo group, 54 in the YN-72 30-mg/day group, 56 in the 150-mg/day group, and 53 in the 300-mg/day group. The numbers of patients included in analysis for safety were 53 in the placebo group, 58 in the YN-72 30-mg/day group, 56 in the 150-mg/day group and 53 in the 300-mg/day group. The effectiveness rate at the end of administration was 42.0% in the placebo group, 79.6% in the YN-72 30-mg/day group, 80.4% in the 150-mg/day group, and 61.5% in the 300-mg/day group. The rates in the YN-72 groups were significantly higher than in the placebo group. Evaluation at the end of the trials revealed that administration of YN-72 was effective. Among skin symptoms, administration of YN-72 accelerated the disappearance of erythema and vesicles and the formation of crust. Administration of YN-72 tended to accelerate the reduction and disappearance of pain. Reduction and disappearance in the YN-72 150-mg/day group occurred significantly earlier than in the placebo group (log-rank test).(ABSTRACT TRUNCATED AT 250 WORDS)
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Niimura M. [Epidemiologic study of hand eczema]. NIHON HIFUKA GAKKAI ZASSHI. THE JAPANESE JOURNAL OF DERMATOLOGY 1989; 99:1309-11. [PMID: 2642180] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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Kamide R, Ishikawa T, Aizawa H, Aoki I, Niimura M. A case of temporal arteritis successfully treated with recombinant interleukin-2. J Dermatol 1989; 16:487-91. [PMID: 2628456 DOI: 10.1111/j.1346-8138.1989.tb01590.x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
An 80-year-old Japanese woman with temporal arteritis was treated with systemic recombinant human interleukin-2 (IL-2) (1 x 10(6) unit/day for six weeks). The presenting symptoms of headache and skin necrosis and abnormal laboratory findings, such as an elevated erythrocyte sedimentation rate and CRP, promptly improved without any serious side effects. Although the pathogenesis of temporal arteritis and the mechanism(s) of the beneficial effect of IL-2 on it still remain unknown, this preliminary study highly encourages further investigations.
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Aoki M, Kamata M, Kamiya M, Goto M, Niimura M. [Survey on the attitude toward the presence of husbands at birth]. JOSANPU ZASSHI = THE JAPANESE JOURNAL FOR MIDWIFE 1989; 43:687-92. [PMID: 2601173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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69
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Yoshida H, Niimura M, Ueda H, Imaura S, Yamamoto S, Kukita A. Clinical evaluation of ketotifen syrup on atopic dermatitis: a comparative multicenter double-blind study of ketotifen and clemastine. ANNALS OF ALLERGY 1989; 62:507-12. [PMID: 2660632] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A double-blind comparative study was performed to investigate the usefulness of ketotifen syrup as compared with clemastine syrup in 284 patients with atopic dermatitis. The clinical efficacy of ketotifen was significantly superior to that of clemastine. Ketotifen alleviated not only pruritus but also other dermatologic symptoms.
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Kamide R, Niimura M, Ueda H, Imamura S, Yamamoto S, Yoshida H, Kukita A. Clinical evaluation of ketotifen for chronic urticaria: multicenter double-blind comparative study with clemastine. ANNALS OF ALLERGY 1989; 62:322-5. [PMID: 2650586] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A double-blind study was performed in 305 patients to compare ketotifen capsule and clemastine tablet. Ketotifen alleviated eruption and itching to a significantly greater extent than clemastine. The utility rating of ketotifen was significantly higher than that of clemastine.
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Kamide R, Nomura N, Niimura M. Characterization of mast cells residing in cutaneous neurofibromas. DERMATOLOGICA 1989; 179 Suppl 1:124. [PMID: 2476339 DOI: 10.1159/000248467] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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72
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Sakai K, Nakajima J, Niimura M, Yamane Y. Effect of several metal compounds on the mutagenicity and deoxyribonucleic acid binding of 1-nitropyrene in Salmonella typhimurium TA 100. Chem Pharm Bull (Tokyo) 1988; 36:4900-7. [PMID: 3073024 DOI: 10.1248/cpb.36.4900] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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73
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Niimura M, Nishikawa T. Treatment of eczema herpeticum with oral acyclovir. Am J Med 1988; 85:49-52. [PMID: 3044093] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Clinical efficacy and safety of oral acyclovir for the treatment of eczema herpeticum were evaluated in 69 patients in a multicenter, double-blind placebo-controlled trial. Patients were randomly assigned to receive either acyclovir, 200 mg five times per day for five days, or placebo. There were 32 evaluable patients in the acyclovir group and 28 in the placebo group. Clinical efficacy was assessed as very effective, effective, moderately effective, or not effective by using a numerical scoring for various parameters, such as lesion stage, pain, and general improvement. The efficacy rate was 81.3 percent in the acyclovir group and 42.9 percent in the placebo group (p less than 0.01), and significant differences were observed in general improvement and disappearance of ulcer. Results for duration of pain and erosion favored the acyclovir group, but did not reach statistical significance. Mild adverse reactions were documented in two patients receiving acyclovir and in six patients receiving placebo. Oral acyclovir seems to be a well-tolerated and effective therapy for eczema herpeticum.
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Ishida T, Ishiji T, Honda M, Niimura M. [Studies on the correlation between histopathology, clinical picture and virus types in anogenital warts]. NIHON HIFUKA GAKKAI ZASSHI. THE JAPANESE JOURNAL OF DERMATOLOGY 1988; 98:899-912. [PMID: 2854167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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75
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Niimura M, Kobayashi M, Kojima S. A mouse monoclonal antibody that binds to an alpha-stichocyte of Trichinella spiralis. Parasitol Res 1988; 74:271-6. [PMID: 3129718 DOI: 10.1007/bf00539577] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Monoclonal antibodies were generated for the isolation of specific antigens from Trichinella spiralis. A monoclonal antibody (TS32D12) of the IgG1 class was selected according to its reactivity and specificity by enzyme-linked immunosorbent assay and immunofluorescent technique. The TS32D12 antibody was purified from ascites by fast protein liquid chromatography. The purified antibody showed a sensitive reaction to the T. spiralis antigen, but not to any other heterologous parasite antigens so far examined. Western blot analysis showed that the monoclonal antibody bound to epitopes present on the 160-kDa molecule. The antigen molecule was fragmented into 56-kDa molecules by heat treatment. The epitopes seemed to be destroyed since the antibody could not bind to the 56-kDa molecule. Staining with the periodic acid-Schiff (PAS) reagent suggested that the two molecules of 160 kDa and 56 kDa were glycoproteins. The 160-kDa molecule was detected only in the alpha-stichocyte of T. spiralis muscle larvae.
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