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排序方式: 共有53条查询结果,搜索用时 62 毫秒
1.
KAZUNARI SETOH MASAHIRO MURAKAMI NAOKO ARAKI TAKUYA FUJITA AKIRA YAMAMOTO SHOZO MURANISHI 《The Journal of pharmacy and pharmacology》1995,47(10):808-811
The in-vitro permeability of chemically modified tetragastrin with fatty acids through the rat skin was studied. The permeability of these compounds through intact skin and stripped skin of rat was determined with a Franz-type diffusion cell. The permeation of tetragastrin across the intact skin was improved by chemical modification with acetic acid and butyric acid. However, tetragastrin and caproyl-tetragastrin did not permeate across the intact skin up to the end of experiment. The permeation of tetragastrin across the stripped skin was improved by chemical modification, the skin flux of these acyl derivatives being in the order: acetyl > butyroyl > caproyl. The stability of tetragastrin in skin homogenate was also significantly improved by chemical modification with fatty acids. These results suggest that chemical modification of tetragastrin with fatty acids increases its lipophilicity, which makes it permeable across the stratum corneum. Moreover, the chemical modification reduced the degradation of tetragastrin in the viable skin, resulting an increase in permeation of tetragastrin across the skin. 相似文献
2.
TAKUYA MYOJO M.D. NOBUYUKI SATO M.D. Ph.D. MOTOKI MATSUKI M.D. OSAMU TANIGUCHI M.D. HIDEKI NAKAMURA M.D. Ph.D. NAOYUKI HASEBE M.D. Ph.D. 《Pacing and clinical electrophysiology : PACE》2012,35(1):e27-e30
We describe a case of a myocardial infarction, in which prominent ischemic J waves were documented during recurrent ventricular fibrillation attacks. The patient was referred to our hospital to treat an out‐of hospital cardiac arrest. Although the 12‐lead electrocardiogram obtained just after the first cardioversion did not show any apparent J waves, a J wave‐like steep downsloping type ST‐segment elevation associated with q waves in the inferior leads was documented during multiple episodes of ventricular fibrillation. Our report revealed the appearance of J waves as an important marker for lethal arrhythmias in acute ischemia. (PACE 2012; 35:e27–e30) 相似文献
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TADAO HASEGAWA AKIRA OKAMOTO TAKUYA KAMIMURA ICHIRO TATSUNO SHIN‐NOSUKE HASHIKAWA MITSUTAKA YABUTANI MASAKADO MATSUMOTO KEIKO YAMADA MASANORI ISAKA MASAAKI MINAMI MICHIO OHTA 《APMIS : acta pathologica, microbiologica, et immunologica Scandinavica》2010,118(3):167-178
Hasegawa T, Okamoto A, Kamimura T, Tatsuno I, Hashikawa S‐N, Yabutani M, Matsumoto M, Yamada K, Isaka M, Minami M, Ohta M. Detection of invasive protein profile of Streptococcus pyogenes M1 isolates from pharyngitis patients. APMIS 2010; 118: 167–78. Streptococcal toxic shock syndrome (STSS) is a re‐emerging infectious disease in Japan and many other developed countries. Epidemiological studies have revealed that the M1 serotype of Streptococcus pyogenes is the most dominant causative isolate of STSS. Recent characterization of M1 isolates revealed that the mutation of covS, one of the two‐component regulatory systems, plays an important role in STSS by altering protein expression. We analyzed the M1 S. pyogenes clinical isolates before or after 1990 in Japan, using two‐dimensional gel electrophoresis (2‐DE) and pulsed‐field gel electrophoresis (PFGE). PFGE profiles were different between the isolates before and after 1990. Markedly different profiles among isolates after 1990 from STSS and pharyngitis patients were detected. Sequence analysis of two‐component regulatory systems showed that covS mutations were detected not only in STSS but also in three pharyngitis isolates, in which proteins from the culture supernatant displayed the invasive type. The mutated CovS detected in the pharyngitis isolates had impaired function on the production of streptococcal pyrogenic exotoxin B (SpeB) analyzed by 2‐DE. These results suggest that several covS mutations that lead to the malfunction of the CovS protein occurred even in pharyngeal infection. 相似文献
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Abstract The currently applied means for detecting teratogens require evaluations in mammals. Since these studies are so time consuming and expensive, establishment of inexpensive and rapid screening system for detecting potential teratogens is needed. In order to assess the usefulness of the Xenopus embryo for developmental toxicity testing, the effects of lead acetate on embryonic and larval development of Xenopus laevis were examined. Exposure to lead acetate produced lethality and abnormality in embryos and larvae and dose-dependency was also noted. Main abnormality after the exposure of embryos before the neurula stage was unfused neural tube with various degrees. This abnormality was mainly attributable to degeneration and desquamation of the epithelium of neural groove and neural plate region. Abnormality induced by the exposure of embryos and larvae after neurulation was mainly edema in the thorax and abnormal flexure of the body axis. Based on our data and those of other investigators, it is proposed that Xenopus embryo is a good candidate for a simple and effective test system to evaluate teratogens. 相似文献
6.
YASUFUMI IMANAKA † KALPANA LAL TAKUYA NISHIMURA † PAULA H. B. BOLTON-MAGGS EDWARD G. D. TITDDENHAM JOHN H. MCVEY 《British journal of haematology》1995,90(4):916-920
Summary. We have studied two heterozygous unrelated CRM non-Jewish FXI-deficient patients. Neither of the patients carries a previously described mutation. Their FXI genes were screened by SSCP analysis following PCR amplification of each exon and the flanking intronic sequences. DNA fragments showing aberrant mobility were cloned and sequenced. The following mutations were identified: in case 1, a T to G transition in exon 12 results in the substitution of Phe-442 by Val (FXI-F442V); in case 2 a C to A transition in exon 5 results in the substitution of Cys-128 by a nonsense codon (FXI-C128X). The missense mutation results in a substitution within the protease domain of FXI. Molecular modelling locates this residue in a structurally conserved region of the protease domain and the amino acid substitution may therefore interfere with either chain folding and subsequent secretion or the stability of the protein in plasma. We conclude that the mutations which we have identified are responsible for the inherited abnormality in these patients. 相似文献
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TAKUYA WATANABE MD AKIRA MIKAMI MD MASAMICHI MOTONISHI MD HIDEHARU HONDA MD KYOKO KYOTANI MD SHIGEHIKO URUHA MD KIYOJI TERASHIMA MD YOSHIO TESHIMA MD YOSHIRO SUGITA MD 《Psychiatry and clinical neurosciences》1998,52(2):231-232
Abstract Two cases of sleep disordered-breathing in climacteric were reported. Polysomnography including esophageal pressure (Pes) measurement was performed. Case 1 was diagnosed as upper airway resistance syndrome. Case 2 was diagnosed as obstructive sleep apnea syndrome, while many episodes of upper airway resistance also existed. Hormone replacement therapy improved clinical symptoms, and in case 1, Pes nadir was improved but incidence of arousals which was induced by breathing disturbances was not significantly changed. Sleep disordered-breathing should be suspected as a cause of sleep disorder even in females, especially in climacteric age. Pes measurement and evaluation of arousals is required. Hormone replacement therapy may release the upper airway resistance. 相似文献
9.
MASAKO YAMAGUCHI SEIICHIRO KAMIMURA JUNICHI TAKADA KAORU IWATA TAKESHI IIDA KAZUO KOBAYASHI HAJIME NAKANO YASUHIRO OKADA SATORU FUJIIMI TETSURO SOHDA NAOMI HIZUKA 《Journal of gastroenterology and hepatology》1998,13(1):47-51
This case of hepatocellular carcinoma (HCC) with alcoholic liver fibrosis, which was not associated with hepatitis viruses, was accompanied by hypoglycaemia. The immunoreactive insulin level was low and other hormonal examinations were almost normal. Immunohistochemical studies showed a high level of insulin-like growth factor II (IGF2) peptide in the HCC section and the size heterogeneity of serum IGF2 investigated by western blot revealed a large form at approximately 15 kDa. These results suggest that the HCC with alcoholic liver fibrosis produced IGF2 and that the hypoglycaemia was caused by tumour-associated IGF2. 相似文献
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