Abstract：
:The effect of compression on the elementary steps of the cross-bridge cycle was investigated with the sinusoidal analysis technique and ATP hydrolysis rate measurement. The lattice spacing of rabbit psoas muscle fibers was osmotically compressed with a macromolecule, dextran T-500 (0-16%). The effects of MgATP, MgADP, Pi on exponential processes (B), (C), (D), and isometric tension were studied at different dextran concentrations. The experiments were performed at the saturating Ca concentration (pCa 4.5-4.8), 200 mM ionic strength, pH 7.0, and 20 degrees C. Our results show that the fiber width decreased linearly with an increase in the dextran concentration, and the width measurement was perfectly correlated with the lattice spacing measurement using equatorial x-ray diffraction studies. We find that the nucleotide binding steps, the ATP-isomerization step, and the cross-bridge detachment step were minimally affected by the compression. Our results indicate that the rate constant of the reverse power stroke step (k-4) decreases with mild compression (0-6.3% dextran), presumably because of the stabilization of the attached cross-bridges in the AM*DP state. We also found that the rate constant of the power stroke step (k4) decreases with higher compression (> 6.3% dextran), presumably because of increased difficulty in performing the power stroke reaction. Our results further show that the association constant (K5) of phosphate to cross-bridges is not changed with compression. The ATP hydrolysis rate declined almost linearly with an increase in the dextran concentration. This observation indicates that the rate limiting step is also affected by the lattice spacing change so that the associated rate constant (k6) becomes progressively less with compression.
journal_name
Adv Exp Med Bioljournal_title
Advances in experimental medicine and biologyauthors
Zhao Y,Kawai M,Wray Jdoi
10.1007/978-1-4615-2872-2_52subject
Has Abstractpub_date
1993-01-01 00:00:00pages
581-92eissn
0065-2598issn
2214-8019journal_volume
332pub_type
杂志文章abstract：:Relative to the role of viruses in the pathogenesis of atherosclerosis a number of questions remain to be answered. Being ubiquitous, are the herpesvirus infections the norm or a diseased state in humans and animals? In all cases studied, including MDV induced atherosclerosis, direct isolation of viruses from arterial...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-1957-7_9
更新日期：1995-01-01 00:00:00
abstract：:The evidence reviewed here indicates that macrophages, either acting alone or in concert with other cells, influence the proliferation of multiple types of cells. Most of the data indicate that these effects are mediated by soluble macrophage-elaborated products (probably proteins) although the role of direct cell-to-...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-4394-3_25
更新日期：1982-01-01 00:00:00
abstract：:The unsatisfactory results of current anti-cancer therapies require the active search for new drugs, new treatment strategies and a deeper understanding of the host-tumour relationship. From this point of view, the drugs with a capacity to substitute the functions of altered tumour suppressor genes are of prominent in...
journal_title：Advances in experimental medicine and biology
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doi：
更新日期：1999-01-01 00:00:00
abstract：:Lactoferrin promoter and the 5'-flanking region of both human and mouse were isolated from a genomic library constructed with lambda phage. A 2.0 kbp Sac I fragment of the human clone (HLF031a.30) and a 3.0 kbp Eco R I/Hinc II fragment of the mouse clone (mL14p9E) containing the lactoferrin promoter, 5'-flanking regio...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-2548-6_18
更新日期：1994-01-01 00:00:00
abstract：:The de novo generation of hematopoietic stem and progenitor cells (HSPC) occurs solely during embryogenesis from a population of epithelial cells called hemogenic endothelium (HE). During midgestation HE cells in multiple intra- and extraembryonic vascular beds leave the vessel wall as they transition into HSPCs in a ...
journal_title：Advances in experimental medicine and biology
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doi：10.1007/978-981-10-3233-2_4
更新日期：2017-01-01 00:00:00
abstract：:Syphilis is a century old sexually transmitted infection transmitted worldwide. WHO reports 12 million new cases that were identified in 1999, with over 90% of these infections reported from patients from low-income countries. This case number of syphilis is on the rise globally in the Men have sex with Men (MSM) popu...
journal_title：Advances in experimental medicine and biology
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doi：10.1007/978-81-322-1774-9_5
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abstract：:The manzamine alkaloids such as manzamine A, B, and C belongs to a unique family of cyctotoxic beta-carbline linked azacycles, which have been isolated from several marine sponges. Manzamine A has recently been shown to exhibit in vivo antimalarial activity against parasite Plasmodium berghei. Further progress was add...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-0135-0_70
更新日期：2003-01-01 00:00:00
abstract：:Regeneration of injured CNS neurons was once thought to be an unachievable goal. Most patients with significant damage to the spinal cord suffer from permanently impaired neurological function. A century of research, however, has led to an understanding of multiple factors that limit CNS regeneration and from this kno...
journal_title：Advances in experimental medicine and biology
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doi：10.1007/978-1-4614-4090-1_1
更新日期：2012-01-01 00:00:00
abstract：:The primary function of the mammalian lung is to facilitate diffusion of oxygen to venous blood and to ventilate carbon dioxide produced by catabolic reactions within cells. However, it is also responsible for a variety of other important functions, including host defense and production of vasoactive agents to regulat...
journal_title：Advances in experimental medicine and biology
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doi：10.1007/978-1-4614-1222-9_11
更新日期：2012-01-01 00:00:00
abstract：:We present here an experimental approach for exploring a new class of tumor biomarkers that are overexpressed by circulating tumor cells (CTCs) and are likely targetable in immunotherapy against tumor metastasis. Using carbohydrate microarrays, anti-tumor monoclonal antibodies (mAbs) were scanned against a large panel...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-55947-6_15
更新日期：2017-01-01 00:00:00
abstract：:Olive oil is a key ingredient in the Mediterranean diet and offers many health benefits. However, many factors affect the quality and quantity of olive oil such as olive tree diseases and olive-related pests. Unfortunately, the procedure of identifying pests or the outbreak of a disease is time-consuming, and it depen...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-32622-7_22
更新日期：2020-01-01 00:00:00
abstract：:These studies show that at least some--though certainly not all--of the adjuvant effects of LPS and its derivatives can be attributed to its ability to eliminate the inhibitory effects of Ts which are activated during the course of a normal immune response. The ability of nontoxic MPL to act in this fashion suggests t...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4615-3434-1_4
更新日期：1992-01-01 00:00:00
abstract：:Human papillomaviruses (HPVs) infect squamous epithelia and can induce hyperproliferative lesions. More than 220 different HPV types have been characterized and classified into five different genera. While mucosal high-risk HPVs have a well-established causal role in anogenital carcinogenesis, the biology of cutaneous...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-030-46227-7_10
更新日期：2020-01-01 00:00:00
abstract：:Oligodendrocytes (OLs) are the myelinating cells of the central nervous system (CNS) during development and throughout adulthood. They result from a complex and well controlled process of activation, proliferation, migration and differentiation of oligodendrocyte progenitor cells (OPCs) from the germinative niches of ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-47861-6_7
更新日期：2017-01-01 00:00:00
abstract：:The RCR of malate+glutamate oxidation of isolated rat brain mitochondria decreased with increasing duration of anoxia and it ceased completely in the 12 hour ischemic group. After one hour of ischemic anoxia neither the respiration of mitochondria nor their morphology altered irreversibly. There is a strong correlatio...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-3273-2_20
更新日期：1976-01-01 00:00:00
abstract：:Plasticity, the ability to undergo lasting changes in response to a stimulus, is an important attribute of neurons. It allows proper development and underlies learning, memory, and the recovery of the nervous system after severe injuries. Often, an outcome of neuronal plasticity is a structural plasticity manifested a...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-7091-0932-8_12
更新日期：2012-01-01 00:00:00
abstract：:Fertilization of urodele amphibians is physiologically polyspermic. These amphibians lack sperm entry blocking mechanisms at the egg surface, such as a cortical reaction or a membrane depolarization. Although, egg jelly is necessary for sperm capacitation, a late block to sperm entry does occur about 30 min after fert...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4613-2255-9_13
更新日期：1986-01-01 00:00:00
abstract：:Thermomechanical Analysis (TMA), using the parallel-plate-rheometer mode of the DuPont 943 TMA, was used to evaluate the softening properties of frozen aqueous carbohydrate model systems. A sample (of fixed dimension) of frozen solution was placed between the parallel plates and cooled to -80 degrees C. The sample was...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4899-0664-9_11
更新日期：1991-01-01 00:00:00
abstract：:Feline infectious peritonitis (FIP) is caused by one of several strains of feline coronaviruses which are grouped into 2 general types of viruses. Infection of cats with FIP virus results in production of serum antibodies which may be protective in conjunction with cell mediated immunity, may provided no protection at...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4684-1280-2_72
更新日期：1987-01-01 00:00:00
abstract：:All results presented here would indicate that serotonin plays an important role in animal behavior such as locomotor depression and that, taking into consideration the effects of antidepressants on 5-HT receptor activity as well as recent biochemical findings of human depression, some forms of human depression could ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-3860-4_34
更新日期：1981-01-01 00:00:00
abstract：:Further to explore the functions of carboxypeptidase N (CPN) in vivo, we undertook two studies to find CPN inhibitors of high potency and relatively long duration of action. In each study we examined for inhibition of hydrolysis of [3H]benzoyl-Ala-Arg using pure bovine serum CPN or human serum. In the first such study...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4684-5143-6_55
更新日期：1986-01-01 00:00:00
abstract：:Prostate cancer causes significant morbidity in men and metastatic disease is a major cause of cancer related deaths. Prostate metastasis is controlled by various cellular intrinsic and extrinsic factors, which are often under the regulatory control of various metastasis-associated genes. Given the dynamic nature of m...
journal_title：Advances in experimental medicine and biology
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doi：10.1007/978-3-319-95693-0_5
更新日期：2018-01-01 00:00:00
abstract：:Autophagy is an intracellular degradation and recycling machinery by which cellular materials are delivered to the lysosome for disposal. Beyond lysosomal degradation, autophagy genes play additional roles in secretion and membrane-trafficking pathways. Ranging from cell-intrinsic and cell-type-specific regulation of ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-981-15-0606-2_10
更新日期：2019-01-01 00:00:00
abstract：:Nanomaterials are invading our environment due to their increasing use in a very broad range of sectors making human exposure foreseeable during the life cycle of these materials. Inhalation is one of the most frequent routes of exposure in case of unintentional exposure and the small size of nanomaterials allows them...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-3-319-72041-8_2
更新日期：2018-01-01 00:00:00
abstract：:In order to investigate how the diaphragm and trunk muscles are recruited during various voluntary movements, we recorded EMG signals and video images simultaneously and analyzed EMGs of the diaphragm and trunk muscles during the voluntary movements that required trunk muscles. During trunk movements, the duration of ...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4419-5692-7_51
更新日期：2010-01-01 00:00:00
abstract：:Inositol 1,4,5-trisphosphate receptors (IP3Rs) are ubiquitously expressed intracellular ligand-gated Ca2+ channels present on the endoplasmic reticulum of virtually all eukaryotic cells. These channels mediate the Ca2+ release from intracellular stores in response to activation by the signaling molecule IP3, which fun...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-3-319-55858-5_6
更新日期：2017-01-01 00:00:00
abstract：:Recent advances in radiotherapy and chemotherapy have led to higher cure rates for female children and adolescents with cancer. However, these treatments adversely affect germ cell survival, and ovarian failure is thus a probable side effect of these anticancer therapies. Moreover, an increasing number of women are ch...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4614-8214-7_4
更新日期：2013-01-01 00:00:00
abstract：:Type 1 diabetes mellitus (T1DM) is classified as an autoimmune disease which progressively results in the depletion of insulin-secreting β-cells. Consequently, the insulin secretion stops leading to hyperglycemic situations within the body. Under severe conditions, it also causes multi-organ diabetes-associated dysfun...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/5584_2018_195
更新日期：2019-01-01 00:00:00
abstract：:Multidrug-resistance (MDR), caused by overexpression of either P-glycoprotein (Pgp) or the multidrug-resistance associated protein (MRP), is characterised by a decreased cellular drug accumulation. One form of MDR is the sequestration of the drug inside cytoplasmic vesicles followed by an a exocytotic and/or efflux pr...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章
doi：10.1007/978-1-4615-4811-9_17
更新日期：1999-01-01 00:00:00
abstract：:An important metabolite of ceramide is ceramide-1-phosphate (C1P). This lipid second messenger was first demonstrated to be mitogenic for fibroblasts and macrophages and later shown to have antiapoptotic properties. C1P is also an important mediator of the inflammatory response, by stimulating the release of arachidon...
journal_title：Advances in experimental medicine and biology
pub_type： 杂志文章,评审
doi：10.1007/978-1-4419-6741-1_8
更新日期：2010-01-01 00:00:00
