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Liang YH, Li W, Ye Y, Li L, Lu GX. RG-008 Mutation screening of TGF-β1 gene in a Chinese patient with Camurati–Engelmann disease. Reprod Biomed Online 2006. [DOI: 10.1016/s1472-6483(11)60541-5] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
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Yang S, Yang J, Liu JB, Wang HY, Yang Q, Gao M, Liang YH, Lin GS, Lin D, Hu XL, Fan L, Zhang XJ. The genetic epidemiology of alopecia areata in China. Br J Dermatol 2004; 151:16-23. [PMID: 15270868 DOI: 10.1111/j.1365-2133.2004.05915.x] [Citation(s) in RCA: 58] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
BACKGROUND Alopecia areata (AA) is hypothesized to be an organ-specific autoimmune disease with genetic predisposition and an environmental trigger. There are few clinical data in Asians. OBJECTIVES To describe the genetic epidemiological features of AA patients in China and to determine the possible genetic model for AA. METHODS Data for 1032 patients with AA were obtained by questionnaire in the Institute of Dermatology of Anhui Medical University in China from 2001 to 2003. Complex segregation analysis and heritability analysis were performed using Falconer's method, EPI INFO 6.0 and SAGE-REGTL programs. RESULTS In total, 1032 AA patients (male/female ratio 1.1 : 1) were enrolled, representing 0.94% of the total number of cases seen in our outpatient clinic during that time. The mean +/- SD age of onset was 28.98 +/- 13.43 years. The difference between the mean age of onset in males and females was not significant. Most patients (82.6%) experienced their first episode of AA within the first four decades of life. A positive family history of AA was obtained in 87 patients (8.4%). The prevalence of AA in first-, second- and third-degree relatives of the proband with AA was 1.6%, 0.19% and 0.03%, respectively. These figures were higher than those in controls. A greater severity and longer duration of AA were seen in the early onset group than in the late-onset group. The early onset group also had more affected first- and second-degree relatives. The heritability of AA in first-, second- and third-degree relatives was 47.16%, 42.53% and 22.29%, respectively. Based on the REGTL results, the best model was a polygenic additive model for AA. CONCLUSIONS The effect of genetic factors is strong in AA, but environmental factors such as infection and psychological stress may still play an important role. Our findings on the genetics of AA are consistent with a polygenic additive mode of inheritance.
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Liang YH, Wang JM, Zhou Y, Jiang XJ, Jiang H, Huang CX. Additive effects of combined valsartan and spironolactone on cardiac aldosterone escape in spontaneously hypertensive rats. Life Sci 2004; 75:1871-8. [PMID: 15302230 DOI: 10.1016/j.lfs.2004.04.012] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2004] [Accepted: 04/29/2004] [Indexed: 11/20/2022]
Abstract
The additive effects of combined valsartan and spironolactone on plasma and cardiac aldosterone escape were evaluated in spontaneously hypertensive rats (SHRs). Twenty-four SHRs were treated with valsartan (30 mg/kg body weight per day), spironolactone (20 mg/kg body weight per day) and a combination of both for 4 months. Blood was collected and plasma aldosterone (PA) was estimated with radioimmunoassay (RIA). Ex vivo heart perfusion was performed, the ex vivo cardiac aldosterone (EXCA) was assessed by RIA after high-performance liquid chromatography separation. PA and EXCA were significantly decreased after one month but increased after 4 months in valsartan administration group. The combined valsartan and spironolactone therapy normalized cardiac aldosterone levels. This study provides the first evidence that the long-term treatment with Angiotensin II type 1 receptor antagonist (AT1A) induces local aldosterone escape in cardiovascular tissue, whereas the combined AT1A and spironolactone therapy inhibits the escape in hypertensive rats.
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He PP, Zhang XJ, Yang Q, Li M, Liang YH, Yang S, Yan KL, Cui Y, Shen YY, Wang HY, Sun LD, Du WH, Shen YJ, Xu SJ, Huang W. Refinement of a locus for Marie Unna hereditary hypotrichosis to a 1.1-cM interval at 8p21.3. Br J Dermatol 2004; 150:837-42. [PMID: 15149494 DOI: 10.1111/j.1365-2133.2004.05913.x] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
BACKGROUND Marie Unna hereditary hypotrichosis (MUHH) is a rare autosomal congenital alopecia with progressive hair loss starting in early childhood and accelerating at puberty. A locus for MUHH has been mapped on chromosome 8p21 but no genes for MUHH have been identified to date. OBJECTIVES To refine the MUHH locus to a narrow chromosome region to facilitate cloning of the gene. METHODS We performed genotyping and linkage analysis in a multigeneration Chinese family with MUHH, using 18 high-density microsatellite markers spanning the previously mapped interval at 8p21. RESULTS Significant evidence for linkage was observed in this region, with a maximum two-point LOD score of 3.01 (theta = 0). Haplotype analysis localized the MUHH locus within the region defined by D8S282 and D8S1839. This region overlaps by 1.1-cM with the previously reported MUHH region and represents a physical distance of about 380 kb. CONCLUSIONS This study provides a refined map location (1.1 cM) for isolation of the gene causing MUHH. These data also indicate the existence of a common MUHH locus at 8p21.3 between affected caucasian and Chinese families.
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Gong WM, Liu HY, Niu LW, Shi YY, Tang YJ, Teng MK, Wu JH, Liang DC, Wang DC, Wang JF, Ding JP, Hu HY, Huang QH, Zhang QH, Lu SY, An JL, Liang YH, Zheng XF, Gu XC, Su XD. Structural genomics efforts at the Chinese Academy of Sciences and Peking University. ACTA ACUST UNITED AC 2004; 4:137-9. [PMID: 14649298 DOI: 10.1023/a:1026152612590] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
Structural genomics efforts at the Chinese Academy of Sciences and Peking University are reported in this article. The major targets for the structural genomics project are targeted proteins expressed in human hematopoietic stem/progenitor cells, proteins related to blood diseases and other human proteins. Up to now 328 target genes have been constructed in expression vectors. Among them, more than 50% genes have been expressed in Escherichia coli, approximately 25% of the resulting proteins are soluble, and 35 proteins have been purified. Crystallization, data collection and structure determination are continuing. Experiences accumulated during this initial stage are useful for designing and applying high-throughput approaches in structural genomics.
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He PP, He CD, Cui Y, Yang S, Xu HH, Li M, Yuan WT, Gao M, Liang YH, Li CR, Xu SJ, Chen JJ, Chen HD, Huang W, Zhang XJ. Refined localization of dyschromatosis symmetrica hereditaria gene to a 9.4-cM region at 1q21-22 and a literature review of 136 cases reported in China. Br J Dermatol 2004; 150:633-9. [PMID: 15099357 DOI: 10.1111/j.0007-0963.2004.05861.x] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
BACKGROUND Dyschromatosis symmetrica hereditaria (DSH) is an autosomal dominant pigmentary genodermatosis characterized by hyperpigmented and hypopigmented macules on the extremities, which has recently been mapped to an 11.6-cM interval on chromosome 1q11-21. So far, most cases of DSH have been reported in Japan and dermatologists around the world might think this disorder mainly occurs in Japan. In fact, there are 17 DSH families including 136 cases reported in China since 1980, but most of them are described in Chinese. OBJECTIVES To refine the previously mapped region that facilitates the identification of the DSH gene and to delineate the clinical and genetic features of Chinese DSH cases by a literature review of 136 cases reported in China. METHODS We performed genotyping and linkage analysis using polymorphic microsatellite markers at 1q11-22 in two Chinese DSH families, and reviewed all of the DSH cases reported in China since 1980. RESULTS A cumulative maximum two-point lod score of 3.68 was produced with marker D1S506 at a recombination frequency of theta = 0.00 in these two families. Haplotype analysis refined the DSH locus to a 9.4-cM interval flanked by D1S2343 and D1S2635. The genetic and clinical features of Chinese cases with DSH were summarized. In some Chinese cases, hyperpigmented and hypopigmented macules were scattered on the neck and chest, but among Japanese patients there were no similar skin lesions to be reported on these sites. CONCLUSIONS This study confirms linkage of DSH to a previously mapped region and refines the DSH gene to a 9.4-cM interval at 1q21-22. Likewise, the literature review indicates that DSH is not an uncommon disorder in China and the differences in the distribution of skin lesions could be related to race and environment.
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Chang JB, Chu NF, Shen MH, Wu DM, Liang YH, Shieh SM. Determinants and distributions of plasma total homocysteine concentrations among school children in Taiwan. Eur J Epidemiol 2003; 18:33-8. [PMID: 12705621 DOI: 10.1023/a:1022504602101] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Abstract
BACKGROUND Plasma total homocysteine (tHcy) level is an independent risk factor for cardiovascular disease (CVD) even among children. The purpose of this study is to evaluate the determinants and distributions of plasma tHcy levels and the relationship between plasma tHcy, folate and vitamin B12 levels among school children in Taipei. METHODS After multi-stage sampling, we randomly selected 1234 school children (609 boys and 625 girls) with the mean age of 13 years (from 12 to 15 years) in this study. Fasting plasma tHcy levels were measured using an ABBOTT IMx analyzer (Axis Biochemicals ASA, Oslo, Norway). Plasma folate and vitamin B12 levels were measured by ACS:180 automated chemiluminescence analyzer (Bayer, Tarrytown, NY, USA). RESULTS The distribution of plasma tHcy levels were skewed to the right with the mean values of 10.50 and 8.95 micromol/l and medians of 9.67 and 8.474 micromol/l for boys and girls, respectively. Plasma tHcy concentrations were lower in younger children and progressively increased with increasing age. Boys had significantly higher plasma tHcy levels than girls (10.50 +/- 4.134 vs. 8.95 +/- 2.61 micromol/l, p < 0.01) and lower plasma folate levels (6.05 +/- 2.85 vs. 6.39 +/- 2.58 nmol/l, p < 0.01), and vitamin B12 levels (444.8 +/- 158.4 vs. 495.0 +/- 181.5 pmol/l, p < 0.001). Plasma tHcy levels were significantly positively associated with anthropometric measures in boys; but these characteristics attenuated and became insignificant after adjusting for other potential confounders in girls. Plasma tHcy levels were negatively associated with plasma folate and vitamin B12 levels even after adjusting for BMI and other potential confounders in both genders. CONCLUSIONS From this study, the distributions of tHcy levels were skewed to the right and the boys had higher plasma tHcy levels than girls. Plasma tHcy levels were significantly positively associated with BMI among boys. Further studies are needed to evaluate the relationship between tHcy and CVD risk factors among children for the better prevention of heart disease in early life.
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Bragg DC, Hudson LC, Liang YH, Tompkins MB, Fernandes A, Meeker RB. Choroid plexus macrophages proliferate and release toxic factors in response to feline immunodeficiency virus. J Neurovirol 2002; 8:225-39. [PMID: 12053277 DOI: 10.1080/13550280290049679] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2022]
Abstract
Recent observations have suggested that lentiviruses stimulate the proliferation and activation of microglia. A similar effect within the dense macrophage population of the choroid plexus could have significant implications for trafficking of virus and inflammatory cells into the brain. To explore this possibility, we cultured fetal feline macrophages and examined their response to feline immunodeficiency virus (FIV) or the T-cell-derived protein, recombinant human CD40-ligand trimer (rhuCD40-L). The rhCD40-L was the most potent stimulus for macrophage proliferation, often inducing a dramatic increase in macrophage density. Exposure to FIV resulted in a small increase in the number of macrophages and macrophage nuclei labeled with bromodeoxyuridine. The increase in macrophage density after FIV infection also correlated with an increase in neurotoxic activity of the macrophage-conditioned medium. Starting at 16-18 weeks postinfection, well after the peak of viremia, a similar toxic activity was detected in cerebrospinal fluid (CSF) from FIV-infected cats. Toxicity in the CSF increased over time and was paralleled by strong CD18 staining of macrophages/microglia in the choroid plexus and adjacent parenchyma. These results suggest that lentiviral infection of the choroid plexus can induce a toxic inflammatory response that is fueled by local macrophage proliferation. Together with the observation of increasing toxic activity in the CSF and increased CD18 staining in vivo, these observations suggest that choroid plexus macrophages may contribute to an inflammatory cascade in the brain that progresses independently of systemic and CSF viral load.
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Liang YH, Liu XZ, Liu SH, Lu GY. The structure of greylag goose oxy haemoglobin: the roles of four mutations compared with bar-headed goose haemoglobin. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2001; 57:1850-6. [PMID: 11717498 DOI: 10.1107/s0907444901016493] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/03/2001] [Accepted: 10/04/2001] [Indexed: 11/10/2022]
Abstract
The greylag goose (Anser anser), which lives on lowlands and cannot tolerate hypoxic conditions, presents a striking contrast to its close relative the bar-headed goose (A. indicus), which lives at high altitude and possesses high-altitude hypoxia adaptation. There are only four amino-acid residue differences at alpha18, alpha63, alpha119 and beta125 between the haemoglobins of the two species. The crystal structure of greylag goose oxy haemoglobin was determined at 3.09 A resolution. Its quaternary structure is slightly different from that of the bar-headed goose oxy haemoglobin, with a rotation of 2.8 degrees in relative orientation of the two dimers. Of the four mutations, those at alpha119 and beta125 produce contact changes in the alpha(1)beta(1) interface and may be responsible for the differences in intrinsic oxygen affinity between the two species; those at alpha18 and alpha63 may be responsible for the differences in quaternary structure between the two species.
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Zhu JP, Chen BZ, Gong WB, Liang YH, Wang HC, Xu Q, Chen ZL, Lu GY. Crystallization and preliminary crystallographic studies of antibacterial polypeptide LCI expressed in Escherichia coli. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2001; 57:1931-2. [PMID: 11717521 DOI: 10.1107/s0907444901017280] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/28/2001] [Accepted: 10/15/2001] [Indexed: 02/22/2023]
Abstract
LCI is a type of novel antibacterial polypeptide secreted by a Bacillus subtilis strain. It consists of 47 residues with a molecular weight of 5468 Da. Using bioengineering, LCI was expressed in Escherichia coli DH5alpha with recombinant plasmid pBVAB16. It was crystallized using PEG 4000 as a precipitant. The crystal belongs to space group P6(2)22 or P6(4)22, with unit-cell parameters a = b = 29.30, c = 187.09 A, and diffracts to 2.44 A. A set of diffraction data to 2.8 A was collected.
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Zhang SJ, Liang YH, Yang PS. [Effects of basic fibroblast growth factor on growth of human periodontal ligament cells]. SHANGHAI KOU QIANG YI XUE = SHANGHAI JOURNAL OF STOMATOLOGY 2001; 10:135-7. [PMID: 14994039] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Subscribe] [Scholar Register] [Indexed: 04/29/2023]
Abstract
OBJECTIVE To evaluate the biological effects of basic fibroblast growth factor (bFGF) on proliferation and DNA synthesis of periodontal ligament cells(PDLC). METHODS PDLC was isolated from periodontal ligament explants. The effects of bFGF on PDLC were assayed by MTT and 3(H)-TdR incorporation studies. The results were expressed as A value and CPM. Analysis of variance was used. RESULTS bFGF could enhance the proliferation and DNA synthesis of PDLC in a dose dependent manner. No inhibition was observed within 1000ng/ml bFGF concentration. The concentration of half maximal effect was 100ng/ml. CONCLUSION The results suggest that bFGF may play an important role in the regeneration of periodontal tissue.
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Liu XZ, Li SL, Jing H, Liang YH, Hua ZQ, Lu GY. Avian haemoglobins and structural basis of high affinity for oxygen: structure of bar-headed goose aquomet haemoglobin. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2001; 57:775-83. [PMID: 11375496 DOI: 10.1107/s0907444901004243] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/18/2000] [Accepted: 03/08/2001] [Indexed: 11/10/2022]
Abstract
Haemoglobin from the bar-headed goose (Anser indicus) has higher oxygen affinity than that from its lowland relatives such as greylag goose (A. anser). The crystal structure of bar-headed goose aquomet haemoglobin was determined at 2.3 A resolution and compared with the structures of the goose oxy, human, horse and other avian haemoglobins and the sequences of other avian haemoglobins. Four amino-acid residues differ between greylag goose and bar-headed goose haemoglobins, among which Alaalpha119 and Aspbeta125 in bar-headed goose haemoglobin reduces the contacts between the alpha(1) and beta(1) subunits compared with Pro and Glu, respectively, and therefore may increase the oxygen affinity by loosening the alpha(1)beta(1) interface. Compared with human oxy haemoglobin, the relative orientation of two alphabeta dimers in the bar-headed goose aquomet and oxy Hbs are rotated by about 4 degrees, indicating a unique quaternary structural difference from the typical R state. This new 'R(H)' state is probably correlated with the higher oxygen affinity of bar-headed goose haemoglobin.
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Wang HC, Liang YH, Zhu JP, Lu GY. Crystallization and preliminary crystallographic studies of bar-headed goose fluoromethaemoglobin with inositol hexaphosphate. ACTA CRYSTALLOGRAPHICA SECTION D: BIOLOGICAL CRYSTALLOGRAPHY 2000; 56:1183-4. [PMID: 10957640 DOI: 10.1107/s0907444900008660] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/20/2000] [Accepted: 06/08/2000] [Indexed: 11/10/2022]
Abstract
Bar-headed goose fluoromethaemoglobin (fluoromet-Hb) complexed with inositol hexaphosphate (IHP) has been crystallized using PEG 6000 as precipitant. The crystal belongs to space group P2(1), with unit-cell parameters a = 59.8, b = 72.0, c = 79.8 A, beta = 102.1 degrees, and diffracts to 2.5 A resolution. To prove the presence of IHP, the structure was determined by the molecular-replacement method. IHP was observed at the entrance to the central cavity between the N and C termini of two beta subunits.
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Shen YL, Chen WH, Jiang K, Liang YH. [HRV analysis system based on Windows 95 and its preliminary application]. HANG TIAN YI XUE YU YI XUE GONG CHENG = SPACE MEDICINE & MEDICAL ENGINEERING 1999; 12:111-5. [PMID: 12430536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/27/2023]
Abstract
Objective. To provide a real useful application system for the HRV research. Method. The acquisition, detection and analysis system of HRV signal was set up based on Windows 95. The system analyzes the HRV signal with statistic method in time domain and power spectrum in frequency domain. And the power spectrum array was also introduced into the analysis. HRV signals of some healthy persons and some patients were detected and analyzed. Result. The HRV characteristic is much more obvious in the diabetics patients. Conclusion. The system is useful in HRV signal analysis and cardiovascular research.
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Levy JK, Ritchey JW, Rottman JB, Davidson MG, Liang YH, Jordan HL, Tompkins WA, Tompkins MB. Elevated interleukin-10-to-interleukin-12 ratio in feline immunodeficiency virus-infected cats predicts loss of type 1 immunity to Toxoplasma gondii. J Infect Dis 1998; 178:503-11. [PMID: 9697733 DOI: 10.1086/515632] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022] Open
Abstract
Similar to human immunodeficiency virus, feline immunodeficiency virus (FIV) induces immunodeficiency and enhanced susceptibility to secondary pathogens. To explore cytokine alterations in lentivirus immunodeficiency, constitutive mRNA expression was measured in lymph nodes of healthy and FIV-infected cats before and after challenge with Toxoplasma gondii. Cytokine mRNA expression was similar in control and FIV-infected cats during the first 10 weeks after infection. At 16 weeks, interferon (IFN)-gamma, tumor necrosis factor-alpha, and interleukin (IL)-10 mRNA were increased in FIV-infected cats. Challenge with T. gondii induced an increase in IL-2, IFN-gamma, and IL-12 in the lymph nodes of control cats, whereas IFN-gamma and IL-10 but not IL-2 or IL-12 increased in the lymph nodes of FIV-T. gondii coinfected cats. These results indicate that FIV immunodeficiency may derive from a failure to generate an IL-12-dependent type 1 response and that an elevated level of IL-10 mRNA expression is a predictor of lentivirus immunodeficiency.
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Burke AP, Farb A, Malcom GT, Liang YH, Smialek J, Virmani R. Coronary risk factors and plaque morphology in men with coronary disease who died suddenly. N Engl J Med 1997; 336:1276-82. [PMID: 9113930 DOI: 10.1056/nejm199705013361802] [Citation(s) in RCA: 1135] [Impact Index Per Article: 42.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Cigarette smoking and abnormal serum cholesterol concentrations are risk factors for acute coronary syndromes, but the underlying mechanisms are poorly understood. We studied whether cigarette smoking and abnormal cholesterol values may precipitate acute coronary thrombosis and sudden death resulting from either rupture of vulnerable coronary plaques or erosion of plaques. METHODS We examined the hearts of 113 men with coronary disease who had died suddenly and also analyzed their coronary risk factors. We found an acute coronary thrombus in each of 59 men, and severe narrowing of the coronary artery by an atherosclerotic plaque without acute thrombosis (stable plaque) in 54. Cases of acute thrombosis were divided into two groups: 41 resulting from rupture of a vulnerable plaque (a thin fibrous cap overlying a lipid-rich core), and 18 resulting from the erosion of a fibrous plaque rich in smooth-muscle cells and proteoglycans. Vulnerable plaques that had not ruptured were counted in each heart. RESULTS Cigarette smoking was a risk factor in 44 (75 percent) of the men with acute thrombosis, as compared with 22 (41 percent) of the men with stable plaques (P<0.001). The mean (+/-SD) ratio of serum total cholesterol to high-density lipoprotein (HDL) cholesterol was markedly elevated in the men who died of acute thrombosis with plaque rupture (mean, 8.5+/-4.0) but only mildly elevated in the men without acute thrombosis (5.5+/-2.4; P<0.001) and in the men with thrombi overlying eroded plaques (5.0+/-1.8; P<0.001). Multivariate analysis showed an association between an elevated ratio of serum total cholesterol to HDL cholesterol and the presence of vulnerable plaques (P<0.001). CONCLUSIONS Among men with coronary disease who die suddenly, abnormal serum cholesterol concentrations - particularly elevated ratios of total cholesterol to HDL cholesterol - predispose patients to rupture of vulnerable plaques, whereas cigarette smoking predisposes patients to acute thrombosis.
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Burke AP, Farb A, Liang YH, Smialek J, Virmani R. Effect of hypertension and cardiac hypertrophy on coronary artery morphology in sudden cardiac death. Circulation 1996; 94:3138-45. [PMID: 8989121 DOI: 10.1161/01.cir.94.12.3138] [Citation(s) in RCA: 62] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
BACKGROUND Epidemiological studies have shown that hypertension and left ventricular hypertrophy (LVH) increase the risk of sudden cardiac death (SCD) in patients with severe coronary artery disease (CAD). However, autopsy studies comparing the morphological substrates for SCD in normotensives and hypertensives are lacking. METHODS AND RESULTS Heart weight and coronary plaque morphology were prospectively compared in SCD in 36 hypertensive and 63 normotensive individuals. The frequency of CAD was similar in hypertensives (69%, n = 25) and normotensives (73%, n = 46). In 71 hearts with CAD, acute coronary thrombi were present in 76% of normotensives versus 36% of hypertensives (P = .002), LVH was present in 64% of hypertensives versus 33% of normotensives (P = .01) and in 72% of hypertensives with one-vessel disease versus 17% of normotensives with one-vessel disease (P = .0005), and a healed or acute infarct without acute thrombus was present in 36% of hypertensives versus 9% of normotensives (P = .007). Heart weight was higher in all cases of plaque rupture (519 +/- 109 g) than eroded plaque (381 +/- 92 g, P = .0002). In contrast to hypertensives, normotensive hearts with severe CAD showed a stepwise increase in heart weight with one-, two-, and three-vessel disease (P = .01). CONCLUSIONS Severe CAD is present in most SCD in hypertensive and normotensive individuals, but acute thrombi are more common in normotensives. LVH is an important contributing mechanism of SCD in hypertensives, especially in cases of one-vessel disease. LVH is associated with plaque rupture and extent of disease in SCD in normotensives with severe CAD.
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Liang YH, Cheng CH, Chan KM. Insulin-like growth factor IEa2 is the predominantly expressed form of IGF in common carp (Cyprinus carpio). MOLECULAR MARINE BIOLOGY AND BIOTECHNOLOGY 1996; 5:145-152. [PMID: 8680527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
Abstract
An insulin-like growth factor (IGF) complementary DNA (cDNA) was isolated from a liver cDNA library of adult common carp, Cyprinus carpio. The identity of this cDNA clone was confirmed by nucleotide sequence determination. Sequence comparison with other vertebrate and rainbow trout IGFs showed that this cDNA encodes a particular subtype of IGF-I, IGF-IEa2. A reverse transcription-polymerase chain reaction (RT-PCR) assay showed that this IGF-I is expressed mainly in the liver (hepatopancreas) of adult common carp. Analyses of 26 other cDNA clones isolated from the same library (using a probe carrying the conserved region of the common carp IGF-IEa2 cDNA clone) showed that these clones represent different insert sizes of the same IGF-IEa2. In conclusion, IGF-IEa2 is the predominantly expressed IGF in the liver of adult common carp.
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Davis AJ, Martinson I, Gan LC, Jin Q, Liang YH, Davis DB, Lin JY. Home care for the urban chronically ill elderly in the People's Republic of China. Int J Aging Hum Dev 1995; 41:345-58. [PMID: 8821244 DOI: 10.2190/772l-hv10-vkuc-y7h8] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
This study examines the home care situation of seventy-five urban chronically ill men and women and their caregivers in three cities in the People's Republic of China. It documents the type of home care provided, the severity of illness, and the dependency in activities of daily living in order to appreciate the complexity of these care situations. The findings reveal that women serve as the caregivers in the majority of the cases and often they are elderly spouses with health problems of their own. The physical, social, psychological, and financial problems experienced by these patients create an enormous burden for the caregivers whether spouses or younger family members coming home from work to a second shift. If alternatives to home care, such as nursing homes, were available, 54 percent of these caregivers would be willing to institutionalize their elderly relative. All caregivers express the need for more assistance in providing home care. This study raises questions regarding the role of the family, the state, and specifically the health care system in caring for the elderly chronically ill in light of their increasing numbers in the population.
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Burke AP, Anderson D, Benson W, Turnicky R, Mannan P, Liang YH, Smialek J, Virmani R. Localization of human immunodeficiency virus 1 RNA in thymic tissues from asymptomatic drug addicts. Arch Pathol Lab Med 1995; 119:36-41. [PMID: 7802551] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Thymic tissue was collected from 11 human immunodeficiency virus 1 (HIV-1)-seropositive drug users who died suddenly of drug intoxication or trauma. None of the 11 individuals had symptoms related to HIV-1 infection or were known to be seropositive for HIV-1 before death. Secondary B-cell follicles were present in every thymus, and Warthin-Finckeldey giant cells were noted in three cases. These follicles were enlarged or fragmented and appeared similar to those in lymph nodes excised from the same individuals. Localization of viral RNA by in situ hybridization demonstrated abundant virus in a follicular center cell distribution within hyperplastic follicles and in scattered medullary lymphocytes. In nine thymus glands from seronegative drug addicts and five thymus glands from seronegative trauma victims who were not drug addicts, secondary follicles were absent and no hybridization signal was present. Other than the presence of germinal centers associated with HIV-1 RNA, there were no histologic differences among the thymus glands of seropositive drug addicts, seronegative drug addicts, and seronegative controls without a history of drug abuse. We conclude that the thymus gland in early stages of infection with HIV-1 is characterized by induction of secondary B-cell follicular hyperplasia in medullary tissues, the germinal centers of which contain abundant viral RNA.
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Burke AP, Anderson D, Mannan P, Ribas JL, Liang YH, Smialek J, Virmani R. Systemic lymphadenopathic histology in human immunodeficiency virus-1-seropositive drug addicts without apparent acquired immunodeficiency syndrome. Hum Pathol 1994; 25:248-56. [PMID: 8150456 DOI: 10.1016/0046-8177(94)90196-1] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We examined lymph nodes from multiple sites in 50 individuals infected with human immunodeficiency virus (HIV-1) who died accidentally of drug overdoses and in whom there was no evidence of opportunistic infection. The size, histologic pattern, presence of Warthin-Finkeldey-type giant cells, and estimation of CD4 cell count of these lymph nodes were compared with those of 13 seronegative drug addicts (controls). Lymph nodes from seropositive individuals were slightly but significantly larger than those of controls. Lymph nodes from seropositive cases were much more likely to contain secondary follicles (90%) than were those from controls (20%). Unlike follicles in control nodes, most secondary follicles in the seropositive cases were in various stages of fragmentation and involution. As follicular changes progressed, there was a decrease in CD4 cells and an increase in intrafollicular and paracortical plasma cells. Plasmacytosis was much more prevalent in lymph nodes from seropositive individuals than in controls. Warthin-Finkeldey-type giant cells were present in at least one node in 29 of 50 seropositive cases, were most numerous in those showing follicular hyperplasia with fragmentation (45% of cases), and were especially numerous in Peyer's patches (61% of cases). There was generally good concordance of HIV-1-associated follicular morphology among diverse lymph node groups. There is prolonged generalized, mild hyperplastic lymphadenopathy with frequent syncytial cells in intravenous drug addicts with asymptomatic HIV-1 infection.
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72
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Martinson IM, Zhong BH, Liang YH. The reaction of Chinese parents to a terminally ill child with cancer. Cancer Nurs 1994; 17:72-6. [PMID: 8180979] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
Twenty-two families who had a child dying from cancer in hospitals in China were interviewed regarding their situation. The interviews were all conducted in Chinese, and the results were analyzed descriptively. Cancer was identified by all families as the most frightening aspect of their situations. Not having enough money for medicines and hospitalization were identified as being the most difficult problem. Sixteen of 22 families paid for the total cost of medical treatment and hospitalization by themselves. The families gave suggestions for other families who may have a child with cancer.
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Abstract
As part of a major study of the impact of childhood cancer on Chinese families, 17 families agreed to be interviewed after the death of their child from cancer. They convey what happens to the child's body after death and what remembrances the family has kept of their child's belongings. They share how they have adjusted and what they would like other parents who have a child with cancer to know. A picture emerges of what it is like to have a child die from cancer in China.
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Chang CS, Li CY, Liang YH, Cha SS. Clinical features and splenic pathologic changes in patients with autoimmune hemolytic anemia and congenital hemolytic anemia. Mayo Clin Proc 1993; 68:757-62. [PMID: 8331977 DOI: 10.1016/s0025-6196(12)60633-8] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
We characterized the pathologic changes in 50 spleens from patients with autoimmune hemolytic anemia and in 13 spleens from patients with congenital hemolytic anemia. The major pathologic findings in autoimmune hemolytic anemia were mild to pronounced cord congestion and variable white pulp area, erythrophagocytosis in conjunction with an increased polymorphonuclear neutrophil reaction, and increased deposition of hemosiderin and extramedullary hematopoiesis. In contrast, both the severity and the frequency of polymorphonuclear neutrophil reactions, deposition of hemosiderin, and extramedullary hematopoiesis were less in patients with congenital hemolytic anemia, and prominent cord congestion associated with an empty or collapsed sinus was noted in patients with hereditary spherocytosis. The activity of erythrophagocytosis in the sinus was more distinct in patients with congenital hemolytic anemia, especially those with nonspherocytic congenital hemolytic anemia, than in patients with autoimmune hemolytic anemia. These findings are consistent with the existence of different mechanisms of trapping and destruction of erythrocytes in autoimmune hemolytic anemia and congenital hemolytic anemia.
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MESH Headings
- Adolescent
- Adult
- Aged
- Aged, 80 and over
- Anemia, Hemolytic, Autoimmune/complications
- Anemia, Hemolytic, Autoimmune/pathology
- Anemia, Hemolytic, Autoimmune/physiopathology
- Anemia, Hemolytic, Congenital/complications
- Anemia, Hemolytic, Congenital/pathology
- Anemia, Hemolytic, Congenital/physiopathology
- Child
- Child, Preschool
- Female
- Humans
- Lymphoproliferative Disorders/complications
- Lymphoproliferative Disorders/pathology
- Male
- Middle Aged
- Spherocytosis, Hereditary/complications
- Spherocytosis, Hereditary/pathology
- Spleen/pathology
- Spleen/physiopathology
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Abstract
As part of a larger study, a descriptive study of the impact of childhood cancer on 50 Chinese families was conducted in Guangzhou (Canton) in the Guangdong Province of the Peoples' Republic of China. The parents of children whose cancer was newly diagnosed (n = 25) or undergoing treatment (n = 25) were interviewed in Chinese and their responses were then translated to English. The children ranged in age from 3 to 16 years and had a variety of cancer diagnoses. Parental occupations and incomes varied. The majority (42%) of the families only had the child with cancer. The duration of symptoms before the diagnosis ranged from 1 week to greater than 2 years. Thirty-five parents (70%) believed that their child knew very little or nothing about their disease. The children learned of their diagnosis in a variety of ways. The parents varied in their degree of openness regarding the child's diagnosis with relatives, friends, and colleagues. Some families had previous experience with a serious illness or death, but all identified cancer as the most frightening disease. Forty-one percent of the families felt they had not adjusted yet to the diagnosis. Few acknowledged the impact on siblings. Families also described their outlook on life and their fears of death. Seventy-six percent of the families were paying the total cost of their child's care themselves, and 14% of the total number of families reported major financial problems.
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Yang HZ, Liang YH, Ren H. [Effect of compound and minor prescription of heat-nature products radix Aconiti lateralis preparata, rhizoma Zingiberis and cortex Cinnamomi on the sympathetic nervous system, adrenal gland, TSH and LH]. ZHONGGUO ZHONG YAO ZA ZHI = ZHONGGUO ZHONGYAO ZAZHI = CHINA JOURNAL OF CHINESE MATERIA MEDICA 1992; 17:688-90, 704. [PMID: 1301760] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The effect of compound and minor prescriptions of Radix Aconiti Lateralis Preparata, Rhizoma Zingiberis and Cortex Cinnamomi on sympathetic nervous system, adrenal gland, TSH and LH of rats was studied. Results showed that both prescriptions made the heart rate quicken, estrous cycle shorten, improved the adrenal cortex hormone and promote TSH and LH synthesis and secretion. The two Heat-nature products (Radix Aconiti Praeparata and Rhizoma Zingiberis) may be used instead of all the three products to make a Heat Syndrome animal model.
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Martinson IM, Liang YH. The reactions of Chinese children who have cancer. PEDIATRIC NURSING 1992; 18:345-9. [PMID: 1518671] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
While many studies have explored the impact of childhood cancer on children and their families, few articles have examined the effects of this disease on selected cultural groups. Reactions of children and families in a select group from the People's Republic of China are described.
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Liang YH, Wang CS, Zhang YJ. [Research on the mechanism and effect of cold and hot compound prescriptions and rhizoma anemarrhenae on the sympathetic nervous system]. ZHONG YAO TONG BAO (BEIJING, CHINA : 1981) 1988; 13:48-50, 64. [PMID: 3242943] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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79
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Sung ML, Tsai TY, Liang YH, Wang CS, Lin CH, Hsieh CC, Lue SA. Apoprotein B: a discriminator of coronary heart disease. TAIWAN YI XUE HUI ZA ZHI. JOURNAL OF THE FORMOSAN MEDICAL ASSOCIATION 1986; 85:368-75. [PMID: 3462320] [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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80
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Zhang GD, Liu HY, Liang YH. [Reverse phase HPLC determination of nucleosides and their bases in the submerged culture of Ganoderma capense]. YAO XUE XUE BAO = ACTA PHARMACEUTICA SINICA 1986; 21:35-9. [PMID: 3728033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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