201
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Adachi I, Liu HX, Horikoshi I, Ueno M, Sato H. [Possibility of lymphatic absorption of epidermal growth factor from intestine]. YAKUGAKU ZASSHI 1993; 113:256-63. [PMID: 8509993 DOI: 10.1248/yakushi1947.113.3_256] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Epidermal growth factor (EGF) in the milk fat globule membrane (MFGM) emulsion enhanced the absorption of this factor from the intestine, especially to the intestinal lymph. Most of the radioactive EGF administered was degraded to small molecular weight materials. These degraded materials were absorbed and appeared in both the intestinal lymph and portal vein blood. However, a certain portion of EGF, although small, appeared in the lymph maintaining the original molecular mass. The MFGM emulsion used enhanced the lymphatic absorption of intact EGF, suggesting that this dosage form increased the absorption of EGF, protected the degradation of EGF in the intestine or promoted the absorption of intact EGF. The enhancing effect on the absorbed dose percentage of EGF recovered using MFGM emulsion was also observed in the portal vein plasma. However, the effect on the absorption of intact EGF was much larger in the lymph than in the portal vein.
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202
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Liu HX. [Metathesis and infusion of carbamide fluid: A simple method for cystic lesions of the head and neck]. SHANGHAI KOU QIANG YI XUE = SHANGHAI JOURNAL OF STOMATOLOGY 1992; 1:122-3. [PMID: 15159907] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
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203
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Ashbridge KR, Bäckström BT, Liu HX, Vikerfors T, Englebretsen DR, Harding DR, Watson JD. Mapping of T helper cell epitopes by using peptides spanning the 19-kDa protein of Mycobacterium tuberculosis. Evidence for unique and shared epitopes in the stimulation of antibody and delayed-type hypersensitivity responses. THE JOURNAL OF IMMUNOLOGY 1992. [DOI: 10.4049/jimmunol.148.7.2248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Abstract
In vivo and in vitro T cell responses to overlapping 20-mer peptides that span the entire 19-kDa protein of Mycobacterium tuberculosis have been compared in three different strains of mice. Immunization of the mice with peptides and analysis of specific antibody production is an in vivo assay of Th cell activity. Peptides 1-20 and 61-80 elicited strong IgG1 responses in BALB/cJ, C57BL/10J, and B10.BR mice, indicating that these peptides could stimulate Th cells, possibly of a Th2 phenotype. T cells isolated from peptide-immunized mice were challenged in vitro with peptide, and their proliferative responses were analyzed. T cells from these three strains of mice immunized with peptides 1-20, 61-80, and 76-95 also responded to challenge with specific peptide in vitro. In addition, B10.BR mice and BALB/cJ mice showed antibody and T cell proliferative responses to peptides 136-155 and 145-159, respectively. Thus, in vitro proliferating T cells were found to possess specificities for peptide epitopes that were almost identical to those of the antibody-producing cells. Delayed-type hypersensitivity (DTH) responses to these peptides were also examined in the three strains. Interestingly, the T cells responding in the DTH assay had Ag specificities that were quite different from those identified in the antibody and proliferation assays. These results suggested that DTH Th cells form a separate population from antibody Th and proliferative T cells and these populations of cells were differentially activated, in an Ag-specific manner.
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204
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Ashbridge KR, Bäckström BT, Liu HX, Vikerfors T, Englebretsen DR, Harding DR, Watson JD. Mapping of T helper cell epitopes by using peptides spanning the 19-kDa protein of Mycobacterium tuberculosis. Evidence for unique and shared epitopes in the stimulation of antibody and delayed-type hypersensitivity responses. JOURNAL OF IMMUNOLOGY (BALTIMORE, MD. : 1950) 1992; 148:2248-55. [PMID: 1372026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 03/25/2023]
Abstract
In vivo and in vitro T cell responses to overlapping 20-mer peptides that span the entire 19-kDa protein of Mycobacterium tuberculosis have been compared in three different strains of mice. Immunization of the mice with peptides and analysis of specific antibody production is an in vivo assay of Th cell activity. Peptides 1-20 and 61-80 elicited strong IgG1 responses in BALB/cJ, C57BL/10J, and B10.BR mice, indicating that these peptides could stimulate Th cells, possibly of a Th2 phenotype. T cells isolated from peptide-immunized mice were challenged in vitro with peptide, and their proliferative responses were analyzed. T cells from these three strains of mice immunized with peptides 1-20, 61-80, and 76-95 also responded to challenge with specific peptide in vitro. In addition, B10.BR mice and BALB/cJ mice showed antibody and T cell proliferative responses to peptides 136-155 and 145-159, respectively. Thus, in vitro proliferating T cells were found to possess specificities for peptide epitopes that were almost identical to those of the antibody-producing cells. Delayed-type hypersensitivity (DTH) responses to these peptides were also examined in the three strains. Interestingly, the T cells responding in the DTH assay had Ag specificities that were quite different from those identified in the antibody and proliferation assays. These results suggested that DTH Th cells form a separate population from antibody Th and proliferative T cells and these populations of cells were differentially activated, in an Ag-specific manner.
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205
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Masiakowski P, Liu HX, Radziejewski C, Lottspeich F, Oberthuer W, Wong V, Lindsay RM, Furth ME, Panayotatos N. Recombinant human and rat ciliary neurotrophic factors. J Neurochem 1991; 57:1003-12. [PMID: 1861138 DOI: 10.1111/j.1471-4159.1991.tb08250.x] [Citation(s) in RCA: 86] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
The human ciliary neurotrophic factor (CNTF) gene was identified and cloned, based on homology with the recently cloned rat cDNA. The gene encodes a protein of 200 amino acids, which shares about 80% sequence identity with rat and rabbit CNTF and, like these homologues, lacks an apparent secretion signal sequence. The human CNTF gene, like the rat gene, appears to contain a single intron separating two protein coding exons. An intronless human CNTF gene was constructed by the use of polymerase chain reactions and introduced into vectors designed for expression of foreign proteins in E. coli. The rat CNTF gene was also introduced into similar vectors. Both the human and rat proteins were expressed at exceptionally high levels, at 20-40% and 60-70% of total protein, respectively. Extraction of the recombinant proteins from inclusion bodies by guanidinium chloride, followed by two column chromatography steps, produced high yields of pure CNTF that supported survival and neurite outgrowth from embryonic chick ciliary neurons in culture. The biological activity of both recombinant proteins was comparable to that of native rat CNTF.
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206
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Liu HX, Adachi I, Horikoshi I, Ueno M. [Promotion of intestinal drug absorption by milk fat globule membrane]. YAKUGAKU ZASSHI 1991; 111:510-4. [PMID: 1662268 DOI: 10.1248/yakushi1947.111.9_510] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A soybean oil emulsion was prepared by using milk fat globule membrane (MFGM) materials as an emulsifier. Its stability and effect on the intestinal absorption of vitamin D3, amphotericin B and kanamycin were studied. The MFGM emulsion was as highly stable as a Tween 80 emulsion. When the MFGM emulsion was sonicated with ultrasonic disrupter, the emulsion became more stable. Quantification of vitamin D3 in the intestinal lymph indicated that the MFGM emulsion enhanced lymphatic absorption of vitamin D3. The recovered percentage of vitamin D3 emulsified with MFGM in the lymph was 1.4 times that by Tween 80, and 2.5 times that of oil-in-water suspension. Statistically significant difference was found among them (p less than 0.05). The volumes of an oil phase in the emulsion affected the absorption of vitamin D3. The recovered percentage of vitamin D3 from the lymph increased with reducing the volume of the oil phase. Sonication of the emulsion did not affect the intestinal drug absorption. Furthermore, the MFGM emulsion had no effect on the intestinal absorption of amphotericin B and kanamycin.
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207
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Normand D, Cornaggia C, Lavancier J, Morellec J, Liu HX. Multielectron dissociative ionization of O2 in an intense picosecond laser field. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 44:475-482. [PMID: 9905699 DOI: 10.1103/physreva.44.475] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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208
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He YX, Guo YH, Ni CH, Xia F, Liu HX, Yu QF, Hu YQ. Compatibility between Oncomelania hupensis and different isolates of Schistosoma japonicum in China. THE SOUTHEAST ASIAN JOURNAL OF TROPICAL MEDICINE AND PUBLIC HEALTH 1991; 22:245-8. [PMID: 1948286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
Oncomelania hupensis from six localities were used for infection with different isolates of Schistosoma japonicum in the mainland of China, ie Anhui in the east, Hubei in the center, Guangxi in the south, Sichuan in the West, Yunnan in the southwest and Fujian in the southeast. Snails from Anhui and Hubei were readily infected with the local isolate of S. japonicum and cross infection also took place readily between the snails and the schistosomes from these two places. Snails from Sichuan and Yunnan were refractory to infection with schistosome isolates from Hubei and Anhui, but the isolates from Sichuan and Yunnan were able to develop in snails from Hubei and Anhui. Though the Guangxi isolate developed readily in both Anhui and Guangxi snails, the average precercarial period in the former was significantly longer than in the latter. None of the other snails from Sichuan, Yunnan and Fujian became infected. On the other hand, snails from Guangxi infected with Anhui parasites also had a longer precercarial period than that in Anhui snails. Snails from Fujian were readily infected with the isolates from Anhui and Yunnan. The present results suggest that there might be different geographic strains of S. japonicum and their Oncomelania snail hosts in the mainland of China.
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209
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Lavancier J, Normand D, Cornaggia C, Morellec J, Liu HX. Laser-intensity dependence of the multielectron ionization of CO at 305 and 610 nm. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1991; 43:1461-1469. [PMID: 9905173 DOI: 10.1103/physreva.43.1461] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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210
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Cornaggia C, Lavancier J, Normand D, Morellec J, Liu HX. Intensity dependence of the multielectron dissociative ionization of N2 at 305 and 610 nm. PHYSICAL REVIEW. A, ATOMIC, MOLECULAR, AND OPTICAL PHYSICS 1990; 42:5464-5472. [PMID: 9904684 DOI: 10.1103/physreva.42.5464] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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211
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Cao ZL, Zhu M, Liu HX, Xiao ZM. [Effects of radix Rehmanniae and processed radix Rehmanniae on some immune functions in mice]. ZHONG YAO TONG BAO (BEIJING, CHINA : 1981) 1988; 13:22-4, 62-3. [PMID: 3267001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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212
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Hou J, Zuo LF, Liu HX, Li SS, Lin YZ, Wang DZ, Guo JW. [Flow cytometry in analysis of precancerous lesions of the esophagus]. ZHONGHUA ZHONG LIU ZA ZHI [CHINESE JOURNAL OF ONCOLOGY] 1988; 10:105-8. [PMID: 3208646] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
DNA content of the severe dysplasia cells in the esophageal epithelium was quantitatively analysed using flow cytometry and compared with those of the normal, mild dysplasia and cancer cells. The results showed that DNA index of the severe dysplasia cells was 1.27 +/- 0.11 and there was a significant difference between its value and those of the normal (1.0 +/- 0.02), mild dysplasia (1.01 +/- 0.03) and cancer cells (1.73 +/- 0.35). The DNA content of severe dysplasia cells lies between the normal and cancer cells. The hyperplasia degree of the severe dysplasia cells parallels their DNA contents. This study indicates that flow cytometry is a useful supplementary tool for diagnosis of the tumor.
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213
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Li XL, Gao FM, Zhao NK, Ge ZL, Liu XZ, Ji XJ, Liu HX. Establishment and biological properties of mouse granulocytic leukemic cell line-L833. SCIENTIA SINICA. SERIES B, CHEMICAL, BIOLOGICAL, AGRICULTURAL, MEDICAL & EARTH SCIENCES 1988; 31:328-37. [PMID: 3166209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
A granulocytic leukemic cell line, called L833 has been established through culturing in vitro from mouse bone marrow of transplantable granulocytic leukemia. More than 280 passages have been performed in 3 years. Cell growth has been rapid and stable. Incidence of tumour formation was 100% with various routes of inoculation. The nature of granulocytic leukemia was confirmed by examination of cytology, cytochemistry, pathology and ultrastructural changes. Analysis proved chromosomes to be hypodiploid with model number of 39, loss of chromosomes, and presence of a marker. Besides the chromosomal change as mentioned above, both L883-A and L833-B derived from colonies formed from the L833 cells cultured in semi-solid agar medium, have their own marker. The cell line was sensitive to various types of antitumour agents in varying degrees. It was also sensitive to ionizing radiation. D0 values of L833 and L883-A cells were 98.8 and 104.9 rad, respectively. The results were similar to that of L801. Establishment of this cell line is of important significance for studying leukemia and screening anti-tumour agents, as well as provides a useful direct, economic and precisely quantitative tool for other relative studies.
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214
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Xi YR, Yang YQ, Yang HZ, Xu YX, Guo HF, Nie JH, Liu HX. [Experimental therapy of filariasis with furapyrimidone (author's transl)]. ZHONGGUO YAO LI XUE BAO = ACTA PHARMACOLOGICA SINICA 1980; 1:56-60. [PMID: 6461177] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
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