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Zhang H, Su D, Yang Y, Zhang W, Liu Y, Bai G, Ma M, Ma Y, Zhang S. Some Single-Nucleotide Polymorphisms of the TSSK2 Gene May be Associated With Human Spermatogenesis Impairment. ACTA ACUST UNITED AC 2009; 31:388-92. [DOI: 10.2164/jandrol.109.008466] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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177
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Cao ZJ, Ma M, Yan XY, Li SL, Zhang XM. A simple urine-collecting apparatus and method for cows and heifers. J Dairy Sci 2009; 92:5224-8. [PMID: 19762840 DOI: 10.3168/jds.2009-2036] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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178
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Ferrer MG, Ma M, Li J, Fritts L, McChesney MB, Miller CJ. P01-02. Anti-inflammatory and regulatory mechanisms provide the context for an effective CD8+ T cell response in live-attenuated immunized animals. Retrovirology 2009. [PMCID: PMC2767692 DOI: 10.1186/1742-4690-6-s3-p2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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179
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Liu X, Ma M, Zhang R, Xu G. FP05-MO-05 Treating symptomatic intracranial arterial stenosis with wingspan stent. J Neurol Sci 2009. [DOI: 10.1016/s0022-510x(09)70288-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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180
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Irvin C, Eadeh H, Ma M. 137: Frequency of Preschoolers Positive for Drugs or Alcohol After Suffering Traumatic Injuries. Ann Emerg Med 2009. [DOI: 10.1016/j.annemergmed.2009.06.164] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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181
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He XQ, Cheng L, Zhang DY, Li W, Xie XM, Ma M, Wang ZJ. First molecular detection of group A rotaviruses in drinking water sources in Beijing, China. BULLETIN OF ENVIRONMENTAL CONTAMINATION AND TOXICOLOGY 2009; 83:120-124. [PMID: 19330275 DOI: 10.1007/s00128-009-9708-6] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/20/2008] [Accepted: 03/16/2009] [Indexed: 05/27/2023]
Abstract
The most prevalent group A rotavirus found in the diarrheic children was also determined in drinking water sources including raw water, treated water and tap water in Beijing, and then the possible contamination contributions to tap water for human consumption were discussed in this study. A total of 26 raw water samples, 77 treated water samples and 143 tap water samples in Beijing were collected for analysis of group A rotavirus from April 2006 to August 2007. According to the results, it was shown that group A rotaviruses occurred in 9 raw water samples (34.6%), 9 treated water samples (11.7%) and 32 tap water samples (22.4%) during the sampling period, and low disinfectant residuals or a vulnerability of the distribution system to pressure transients, in addition to raw water, may account for the group A rotaviruses contamination to tap water. The rotavirus contamination observed in this study may highlight a potential public health risk and illustrate the importance of including routine virological analysis of drinking water supplies during winter time in Beijing.
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182
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Yin L, Chung CM, Huo R, Liu H, Zhou C, Xu W, Zhu H, Zhang J, Shi Q, Wong HYC, Chen J, Lu Y, Bi Y, Zhao C, Du Y, Ma M, Cai Y, Chen WY, Fok KL, Tsang LL, Li K, Ni Y, Chung YW, Zhou Z, Sha J, Chan HC. A sperm GPI-anchored protein elicits sperm-cumulus cross-talk leading to the acrosome reaction. Cell Mol Life Sci 2009; 66:900-8. [PMID: 19153666 PMCID: PMC11131477 DOI: 10.1007/s00018-009-8482-2] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
The acrosome reaction has long been thought to be induced by the zona pellucida. Here we report the identification and function of a novel human sperm glycosylphosphatidylinositol (GPI)-anchored membrane protein, NYD-SP8. The release of the protein during sperm-egg interaction and its binding to the cumulus, the first layer of egg investment, elicits cross-talk between the gametes and produces calcium dependant release of progesterone, which lead to the acrosome reaction. An in vivo mouse model of NYD-SP8 immunization is also established showing a reduced fertility rate. Thus, contrary to accepted dogma, our study demonstrates for the first time that, prior to reaching the zona pellucida, sperm may release a surface protein that acts on the cumulus cells leading to the acrosome reaction, which may be important for determining the outcome of fertilization.
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183
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Zhao L, Ding T, Cyrus T, Cheng Y, Tian H, Ma M, Falotico R, Praticò D. Low-dose oral sirolimus reduces atherogenesis, vascular inflammation and modulates plaque composition in mice lacking the LDL receptor. Br J Pharmacol 2009; 156:774-85. [PMID: 19220291 DOI: 10.1111/j.1476-5381.2008.00080.x] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022] Open
Abstract
BACKGROUND AND PURPOSE Chronic proliferative responses of different vascular cell types have been involved in the pathogenesis of atherosclerosis. However, their functional role remains to be established. Sirolimus reduces neointimal proliferation after balloon angioplasty and chronic graft vessel disease. These studies were undertaken to investigate the effects of this anti-proliferative drug on atherogenesis. EXPERIMENTAL APPROACH Low-density lipoprotein receptor-deficient (LDL r-KO) mice on a cholesterol-rich diet were randomized to receive placebo or sirolimus (0.1; 0.3; or 1 mg.kg(-1)) in their diet for 8 or 16 weeks. RESULTS In both studies, plasma levels of the drug increased in a dose-dependent fashion, animals gained weight normally and, among groups, plasma lipids levels did not differ significantly. Compared with placebo, plasma levels of interleukin-6, monocyte chemoattractant protein-1, interferon gamma, tumour necrosis factor alpha and CD40, and their mRNA levels in aortic tissue were significantly reduced in sirolimus-treated mice. This effect resulted in a significant and dose-dependent reduction in atherosclerotic lesions, in both the root and aortic tree. Also these lesions contained less monocyte/macrophages and smooth muscle cells, but more collagen. CONCLUSIONS AND IMPLICATIONS The present results demonstrated that at low doses, sirolimus was an effective and safe anti-atherogenic agent in the LDL r-KO mice. It attenuated the progression of atherosclerosis and modulated the plaque phenotype by reducing the pro-inflammatory vascular responses typical of the disease.
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184
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Xia JG, Zhang S, Zhang Y, Ma M, Gu N. Maghemite nanoparticles and their protamine derivatives: cellular internalization and effects on cell-cycle progress. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY 2009; 9:1025-1028. [PMID: 19441446 DOI: 10.1166/jnn.2009.c078] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/27/2023]
Abstract
Dimercaptosuccinic acid-coated maghemite nanoparticles and their protamine derivatives were prepared. TEM revealed that the average size of nanoparticles is 10 nm and derivatives with larger size consist of several original nanoparticles. The cellular uptake of nanoparticles and derivatives by human hepatoma cells, and their effects on cell viability and cell-cycle were detected. Results showed that the internalization of nanoparticles into cells was very limited, while derivatives could be internalized into cells with high efficiency. Nanoparticles didn't display significant cytotoxicity at a wide range of concentrations (0.3-2.4 mg/ml), whereas derivatives had a narrow range of non-toxicity concentrations (0.3-0.6 mg/ml). Both nanoparticles and derivatives could affect cell-cycle progress and the mechanisms underlying were discussed.
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185
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Li Y, Lin H, Ma M, Li L, Cai M, Zhou N, Han X, Bao H, Huang L, Zhu C, Li C, Yang H, Rao Z, Xiang Y, Cui Z, Ao L, Zhou Z, Xiong H, Cao J. Semen quality of 1346 healthy men, results from the Chongqing area of southwest China. Hum Reprod 2009; 24:459-69. [DOI: 10.1093/humrep/den399] [Citation(s) in RCA: 77] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022] Open
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186
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Yin H, Liu Z, Guan G, Liu A, Ma M, Ren Q, Luo J. Detection and differentiation of Theileria luwenshuni and T. uilenbergi infection in small ruminants by PCR. Transbound Emerg Dis 2008; 55:233-7. [PMID: 18666967 DOI: 10.1111/j.1865-1682.2008.01031.x] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Theileria luwenshuni and T. uilenbergi are newly identified Theileria species highly pathogenic for sheep and goats in China. As they are morphologically indistinguishable and poorly characterized, there is no easily applicable method available to differentiate between these species. In the present study, PCR assays are described for the differentiation and detection of T. luwenshuni and T. uilenbergi using species-specific primers, which were designed based on the hypervariable region of the small subunit ribosomal RNA gene sequences. By testing 100 field blood samples of sheep collected from five geographically different regions where the Theileria species were described to be prevalent, the PCR assays not only detected infected samples but also identified mixed infection. This suggests that these PCR assays are useful tools for the detection of and differentiation between T. luwenshuni and T. uilenbergi.
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187
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Cao ZJ, Li SL, Xing JJ, Ma M, Wang LL. Effects of maize grain and lucerne particle size on ruminal fermentation, digestibility and performance of cows in midlactation. J Anim Physiol Anim Nutr (Berl) 2008; 92:157-67. [PMID: 18336412 DOI: 10.1111/j.1439-0396.2007.00721.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This study evaluated the effects of, and interactions between, maize grain particle size (MPS) and lucerne particle size (LPS) on dry matter intake, milk production, milk composition, ruminal fermentation, microbial yield, chewing activity and nutrient digestibility in midlactation cows. Four multiparous Holstein cows with ruminal cannulas were assigned randomly to a 4 x 4 Latin square design, averaged 595 kg (SD = 52) of body weight and 121 days in milk (SD = 21) at the start of the experiment. Experimental periods were 21 days in length (14 days of treatment adaptation and 7 days of data collection). All diets were fed as total mixed ration and were formulated to meet or exceed the requirements of a 600 kg multiparous cow producing 20 kg milk/day with 4.0% fat. The ratio of concentrate to forage was 39:61 (dry matter basis). Treatments were arranged in a 2 x 2 factorial design; two levels of LPS (2.54 and 6.22 mm) were combined with concentrates based on either ground maize grain (711 mum) or cracked maize grain (1755 mum). Maize grain and LPS did not affect milk production and milk fat percentage. Milk protein percentage increased when MPS was decreased (p = 0.04). Milk urea nitrogen was lower for cows fed ground maize grain compared with cracked maize grain (118-134 mg/l, p = 0.05). Estimated microbial N supply increased 41.9 g/day for ground maize grain compared with cracked maize grain. Cows fed long lucerne (LL) hay spent more time ruminating compared with cows fed short lucerne (SL) hay ranging from 293 to 336 min/day (p < 0.001). Total time spent chewing by cows increased from 505 to 574 min/day (p = 0.002) for SL and LL respectively. Based on the results from this study, midlactation cows can be fed diets that contain ground maize grain and SL hay without leading to negative effects on ruminal pH and nutrient digestibility.
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188
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Watanabe K, Ma M, Narasimman G, Suresh P, Juan W, Punniyakoti V. P361 14-3-3 Protein prevents development of diabetic cardiomyopathy. Int J Cardiol 2008. [DOI: 10.1016/s0167-5273(08)70272-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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189
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Zeng Z, Tu J, Yang Y, Xiang J, Huang X, Mao F, Ma M. Nanostructured Si/TiC composite anode for Li-ion batteries. Electrochim Acta 2008. [DOI: 10.1016/j.electacta.2007.09.006] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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190
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Su Y, Xie Q, Chen C, Zhang Q, Ma M, Yao S. Electrochemical Quartz Crystal Microbalance Studies on Enzymatic Specific Activity and Direct Electrochemistry of Immobilized Glucose Oxidase in the Presence of Sodium Dodecyl Benzene Sulfonate and Multiwalled Carbon Nanotubes. Biotechnol Prog 2008; 24:262-72. [DOI: 10.1021/bp070256+] [Citation(s) in RCA: 31] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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191
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Yang Y, Ma M, Li L, Zhang W, Xiao C, Li S, Ma Y, Tao D, Liu Y, Lin L, Zhang S. Evidence for the association of Y-chromosome haplogroups with susceptibility to spermatogenic failure in a Chinese Han population. J Med Genet 2007; 45:210-5. [DOI: 10.1136/jmg.2007.054478] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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192
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Ma M, Amano T, Enokimoto M, Yano T, Moe KK, Misawa N. Influence of pH of TSI medium on the detection of hydrogen sulfide production by Campylobacter hyointestinalis. Lett Appl Microbiol 2007; 44:544-9. [PMID: 17451523 DOI: 10.1111/j.1472-765x.2006.02097.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: 11/28/2022]
Abstract
AIMS To examine the influence of pH of triple sugar iron (TSI) agar medium on the detection of hydrogen sulfide (H(2)S) production in Campylobacter hyointestinalis ssp. hyointestinalis (CHH). METHODS AND RESULTS TSI medium was adjusted by the addition in HCl or NaOH to cover a pH 6.0-9.0. One loopful of bacterial growth of CHH strain ATCC 35217 was inoculated into each different pH medium, and incubated at 37 degrees C under micro-aerobic conditions. The H(2)S production was not detectable even after incubation for 72 h in acidic medium pH; however, TSI with alkaline pH (8.0-9.0) allowed detection as early as 3 h of incubation. A total of 20 CHH strains from various animal sources were examined for the detection of H(2)S production in TSI medium with pH 9.0. The H(2)S was detected in all the strains examined within 12 h, and the judgment was unambiguous. CONCLUSION The results showed that the detection of H(2)S production by CHH was influenced by medium pH, and TSI with alkaline condition is highly sensitive. SIGNIFICANCE AND IMPACT OF THE STUDY The findings of the present study suggest that TSI medium with alkaline pH contributes to fast detection and led to unambiguous judgment of H(2)S production by CHH.
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193
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Man AKY, Chu MC, Chen PP, Ma M, Gin T. Clinical experience with a chronic pain management programme in Hong Kong Chinese patients. Hong Kong Med J 2007; 13:372-8. [PMID: 17914143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/17/2023] Open
Abstract
OBJECTIVE To describe experience with a chronic pain management programme in Hong Kong Chinese patients. DESIGN Prospective study. SETTING Regional hospital, Hong Kong. PARTICIPANTS Patients with chronic pain who participated in the first six Comprehensive Out-patient Pain Engagement programmes between 2002 and 2005. INTERVENTION Comprehensive Out-patient Pain Engagement is a 14-day structured, multidisciplinary out-patient programme conducted over 6 weeks. It includes pain education, cognitive re-conceptualisation, training in communication skills and coping strategies, graded physical exercises and functional activities training. It aims to improve patient function and quality of life, despite persistent pain. MAIN OUTCOME MEASURES Changes in scores from baseline values after joining the programme, with respect to several assessment tools. These included the following: visual analogue pain scale, Pain Catastrophizing Scale, Patient Self-efficacy Questionnaire, Canadian Occupational Performance Measure, Medical Outcome Survey-Short Form 36 Questionnaire, and duration of physical tolerances, medication utilisation, and work status records. RESULTS Forty-five patients were available for analysis. After the Comprehensive Out-patient Pain Engagement programme, improvements in Medical Outcome Survey-Short Form 36 Questionnaire (role physical and vitality), Pain Catastrophizing Scale, Patient Self-efficacy Questionnaire, and Canadian Occupational Performance Measure were demonstrated (P<0.05). The duration of standing and sitting tolerances increased (P<0.05). An improvement in employment rate was also evident (P=0.01). CONCLUSION The initial results of our management programme in Chinese patients with chronic pain are encouraging. This type of programme should be promoted more widely in this group of patients, as it appears to improve physical function, psychological well-being, and productivity.
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194
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Kong Q, Zhang X, Mo F, Li S, Ma M. Effect of particle size of lucerne hay on chewing
activity, digestion and energy balance of Chinese
Holstein heifers. JOURNAL OF ANIMAL AND FEED SCIENCES 2007. [DOI: 10.22358/jafs/74509/2007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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195
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Cao Z, Ma M, Wang L, Chen P, Li S. Effects of maize and lucerne particle size
on ruminal passage rate, chewing activity
of cows in midlactation. JOURNAL OF ANIMAL AND FEED SCIENCES 2007. [DOI: 10.22358/jafs/74573/2007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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196
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Cao Z, Li S, Wang Y, Ma M, Chen P. Effect of acetylated soyabean peptides on rumen
fermentation and nitrogen metabolism in sheep. JOURNAL OF ANIMAL AND FEED SCIENCES 2007. [DOI: 10.22358/jafs/74476/2007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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197
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Irvin C, Wheaton D, Weldon S, Ma M. 338: Emergent Operative Trends in Major Adult Trauma Patients. Ann Emerg Med 2007. [DOI: 10.1016/j.annemergmed.2007.06.399] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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198
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Ma M, Matthews B, Meaney D, Neumar R. Early Calpain Activity in a Rat Model of Traumatic Axonal Injury. Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2007.03.788] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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199
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Ma M, Chiang WC, Yang CW, Wang HC, Chang WT, Chen WJ. Outcomes of Out-of-hospital Cardiac Arrest in Taipei: Does Advanced Life Support Make a Difference? Acad Emerg Med 2007. [DOI: 10.1197/j.aem.2007.03.768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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200
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Bliss TM, Kelly S, Shah AK, Foo WC, Kohli P, Stokes C, Sun GH, Ma M, Masel J, Kleppner SR, Schallert T, Palmer T, Steinberg GK. Transplantation of hNT neurons into the ischemic cortex: Cell survival and effect on sensorimotor behavior. J Neurosci Res 2006; 83:1004-14. [PMID: 16496370 DOI: 10.1002/jnr.20800] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
Cell transplantation offers a potential new treatment for stroke. Animal studies using models that produce ischemic damage in both the striatum and the frontal cortex have shown beneficial effects when hNT cells (postmitotic immature neurons) were transplanted into the ischemic striatum. In this study, we investigated the effect of hNT cells in a model of stroke in which the striatum remains intact and damage is restricted to the cortex. hNT cells were transplanted into the ischemic cortex 1 week after stroke induced by distal middle cerebral artery occlusion (dMCAo). The cells exhibited robust survival at 4 weeks posttransplant even at the lesion border. hNT cells did not migrate, but they did extend long neurites into the surrounding parenchyma mainly through the white matter. Neurite extension was predominantly toward the lesion in ischemic animals but was bidirectional in uninjured animals. Extension of neurites through the cortex toward the lesion was also seen when there was some surviving cortical tissue between the graft and the infarct. Prolonged deficits were obtained in four tests of sensory-motor function. hNT-transplanted animals showed a significant improvement in functional recovery on one motor test, but there was no effect on the other three tests relative to control animals. Thus, despite clear evidence of graft survival and neurite extension, the functional benefit of hNT cells after ischemia is not guaranteed. Functional benefit could depend on other variables, such as infarct location, whether the cells mature, the behavioral tests employed, rehabilitation training, or as yet unidentified factors.
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