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The role of CD40 in T cell-mediated immune response

International Journal of Pediatrics.2011;38(1):41-43. doi:10.3760/cma.j.issn.1673-4408.2011.01.015

The activation of CD40-CD40L costimulatory signal channel plays a necessary role in T cellmediated immune response. Activation of CD40 on antigen presenting cells by CD40L which expressed on Tlymphocytes, while contributing to the pro-in? ammatory response necessary for eradication of infection, accounts for the pathology in autoimmunity. Meanwhile, there is evidence that CD40 is also expressed on T-lymphocytes and can act as a costimulatory molecule. Further dissection of the exact nature and role of CD40 in T cell activation could lead the way to novel therapeutics for diseases which include organ-graft refection, autoimmune diseases,tumor, and inflammation.

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Progress of rotavirus infection and NF-κB

Manli YU

International Journal of Pediatrics.2011;38(1):21-23. doi:10.3760/cma.j.issn.1673-4408.2011.01.008

In rotavirus infection, NF-κB plays an important role in regulation of host defense and pathogenic of rotavirus. On the one hand, by the signal regulation mechanism of NF-κ Bmediated, host plays antiviral effect and immune-related role. On the other hand, by blocking NF-κB nuclear accumulation and other reactions, rotavirus evades the host immune response. Consequently, the outcome of rotavirus infection may depend on dominant way of NF-κ Bregulating.

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Progress in pathogenic secretome research

Shuxian LI ; Dan XU

International Journal of Pediatrics.2011;38(1):18-21. doi:10.3760/cma.j.issn.1673-4408.2011.01.007

Secretome includes all the gene products secreted by a cell. The development of proteomicbased approaches and genome-based computational prediction technology have gradually revealed secretome plays an important role in pathogen infection recently. Secretome facilitates pathogen to proliferate and invade the host by inhibiting the host's immune system, resisting acidic PH conditions, snatching nutrition and so on.Identification of pathogenic secretome helps discovering new drug targets and biomarkers, and supporting the diagnosis and treatment.

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Vitamin D3 and bronchial asthma

Dongsheng DING

International Journal of Pediatrics.2011;38(1):15-17. doi:10.3760/cma.j.issn.1673-4408.2011.01.006

The morbility of bronchial asthma is gradually increasing year by year all over the world. Numerous studies have demonstrated that bronchial asthma is close related with immunoregulation. Vitamin D3 is involved to immune regulatory mechanisms in bronchial asthma, including regulating cytokine, Treg, matrix metalloproteinases-9. Considering the influence of vitamin D3 on the immune regulatory of bronchial asthma, it is provided a theory evidence that vitamin D can be used in the treatment of bronchial asthma effectivly and a novel method of immune treatment for children with bronchial asthma eventually.

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Ambulatory blood pressure monitoring in pediatrics

Xiaoli CUI

International Journal of Pediatrics.2011;38(2):136-138. doi:10.3760/cma.j.issn.1673-4408.2011.02.013

Ambulatory blood pressure monitoring (ABPM), which can reflect the 24h mean blood pressure, precisely characterize changes in blood pressure throughout daily activities and circadian rhythm, has been found to be superior to traditional blood pressure monitoring. ABPM is in more widespread use in recognition of children's white coat hypertension and masked hypertension, predicting target-organ damage, assessing the efficacy of antihypertentive drug treatment and distinguishing primary hypertension from secondary hypertension.The article summarizes the clinical applications of ABPM in pediatrics.

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Progress in prevention and treatment of parenteral nutrition associated cholestasis of preterm infants

Feng ZHU

International Journal of Pediatrics.2011;38(1):59-61. doi:10.3760/cma.j.issn.1673-4408.2011.01.021

In the treatment of parenteral nutrition(PN) of preterm infants, parenteral nutrition associated cholestasis(PNAC) is the most common complication. However, the mechanisms of how this complication happens are unknown. This paper summarizes the research reports about PNAC both at home and aboard in recent years and raises various precautions on premature birth avoiding, reasonable feeding, PN projects optimizing and so on.Ursodeoxycholicacid is the first-line drug in the current treatment for PNAC.

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Update on sublingual immunotherapy in patients with asthma due to house-dust mites

Zhen ZHOU

International Journal of Pediatrics.2011;38(1):56-58. doi:10.3760/cma.j.issn.1673-4408.2011.01.020

Sublingual immunotherapy(SLIT) has received increasing attention as a treatment for asthma due to house-dust mites. The precise mechanisms of SLIT remain unclear, but SLIT has been shown to modify the balance of Th1/Th2, increase IgG4 and decrease IgE. The allergen is captured within the oral mucosa by Langerhans-like dentritic cells, suggesting that such cells are prone to induce tolerance. Increasing data support the safety, efficacy and good compliance with SLIT. However, the precise mechanisms, optimal dosage and duration of SLIT require further investigation.

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Progress in abnormal auditory responses of autistic children

Yinghua TAN

International Journal of Pediatrics.2011;38(1):50-52. doi:10.3760/cma.j.issn.1673-4408.2011.01.018

Abnormal auditory responses is one of the common features in autism. The characteristics and pathogenesis of the abnormality is not quite clear. The results of electrophysiological hearing evaluation ( i. e,brainstem auditory evoked potentials, otoacoustic emissions) in autistic children are inconsistent. The abnormal aduitory responses may contribute to the poor social interaction and communication in autism.

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Effect of integrin signaling pathway on proliferation and migration of vascular smooth muscle cell

Cuixia LU

International Journal of Pediatrics.2011;38(1):47-50. doi:10.3760/cma.j.issn.1673-4408.2011.01.017

Many cardiovascular diseases, such as pulmonary hypertension, atherosclerotic plaque formation and restenosis after angioplasty, are charaterized by vascular remodeling resulting from migration and proliferation of vascular smooth muscle cells. Integin receptors can activate the expression of related genes through the corresponding signal pathway, and lead to vascular smooth muscle cell' s proliferation and migration and other biological behavioral change, which may be a new hotspot of pathogenesis and intervention of vascular remodeling.

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Progress in treatment of acute lymphoblastic leukemia in adolescents

Na ZHANG

International Journal of Pediatrics.2011;38(1):38-40. doi:10.3760/cma.j.issn.1673-4408.2011.01.014

The development of effective therapy for children with acute lymphoblastic leukemia (ALL) is one of the greatest successes of clinical oncology. However, cure rates for adults with ALL remain relatively low. Adolescents are the special population between children and adults. These patients group will be received protocol from either pediatric or adult oncologists depending on referral pattern. In recent years, researchers from abroad large cooperative groups show pediatric-based protocol has better outcome than adult-based protocol. In this article, the protocol of ALL in children and adults are compared . It seems the first and probably the most important reason is the dose intensity of the nonmyelosuppressive chemotherapeutic agents, especially asparaginase.

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