July 23, 2013

Gastric Motility Following Ingestion of a Solid Meal in a Cohort of Adult Asthmatics

 
 

J Neurogastroenterol Motil. 2013 Jul;19(3):355-365. English.
Published online 2013 July 08.  http://dx.doi.org/10.5056/jnm.2013.19.3.355 
© 2013 The Korean Society of Neurogastroenterology and Motility
Gastric Motility Following Ingestion of a Solid Meal in a Cohort of Adult Asthmatics
Wadu Arachchige Dharshika Lakmali Amarasiri,1 Arunasalam Pathmeswaran,2 Arjuna Priyadharshin de Silva,3 Anuradha Supun Dassanayake,4 Channa Dhammika Ranasinha,4 and Hithanadura Janaka de Silva3
1Department of Physiology, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka.
2Department of Public Health, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka.
3Department of Medicine, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka.
4Department of Pharmacology, Faculty of Medicine, University of Kelaniya, Ragama, Sri Lanka.

 Correspondence: Wadu Arachchige Dharshika Lakmali Amarasiri, MD. Department of Physiology, Faculty of Medicine, University of Kelaniya, P.O. Box 6, Thalagolla Road, Ragama 11010, Sri Lanka. Tel: +94-112958337, Fax: +94-718350683, Email: lakmaliamarasiri@gmail.com 
Received August 22, 2012; Revised April 26, 2013; Accepted April 30, 2013.
This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract

Background/Aims
Asthmatics have abnormal esophageal motility and increased prevalence of gastroesophageal reflux disease (GERD). The contribution of gastric motility is less studied. We studied gastric myoelectrical activity, gastric emptying (GE) and their association with GERD symptoms and vagal function in adult asthmatics.
Methods
Thirty mild, stable asthmatics and 30 healthy controls underwent real-time ultrasonography and 1 hour pre- and post-prandial cutaneous electrogastrography, following a test meal (480 kcal, 60% carbohydrate, 20% protein, 20% fat and 200 mL water). The percentage of normal slow waves and arrhythmias, dominant frequency and power, frequency of antral contractions, gastric emptying rate (GER) and antral motility index (MI) was calculated. Twenty-seven asthmatics underwent gastroscopy and in all subjects GERD symptoms were assessed by a validated questionnaire. Vagal function parameters were correlated with gastric motility parameters.
Results
The asthmatics (37% male; 34.8 ± 8.4 years) and controls (50% male; 30.9 ± 7.7 years) were comparable. None had endoscopic gastric pathological changes. Twenty asthmatics described GERD symptoms. Twenty-two (73.3%) asthmatics showed a hypervagal response. Compared to controls, asthmatics had delayed GER and lower MI, lower percentage of normal gastric slow waves, more gastric dysrythmias and failed to increase the post-prandial dominant power. There was no correlation of GE and cutaneous electrogastrography parameters with presence of GERD symptoms or with vagal function.
Conclusions
Asthmatics showed abnormal gastric myoelectrical activity, delayed GE and antral hypomotility in response to a solid meal compared to controls. There was no association with vagal function or GERD symptom status.
Keywords: AsthmaGastric emptyingGastroesophageal reflux.

Original Article  Open Access


     




IL-1 and T helper immune responses

Front. Immunol., 15 July 2013 | doi: 10.3389/fimmu.2013.00182

IL-1 and T helper immune responses

Veronica Santarlasci, Lorenzo Cosmi, Laura Maggi, Francesco Liotta and Francesco Annunziato*
  • Department of Experimental and Clinical Medicine, University of Florence, Florence, Italy
CD4 T cells play a critical role in mediating adaptive immunity to a variety of pathogens as well as in tumor immunity. If not adequately regulated, CD4 T cells can be also involved in autoimmunity, asthma, and allergic responses. During TCR activation in a particular cytokine milieu, naïve CD4 T cells may differentiate into one of several lineages of T helper (Th) cells, including Th1, Th2, and Th17, as defined by their pattern of cytokine production and function. IL-1, the prototypic proinflammatory cytokine, has been shown to influence growth and differentiation of immunocompetent lymphocytes. The differential expression of IL-1RI on human CD4 T cell subsets confers distinct capacities to acquire specific effector functions. In this review, we summarize the role of IL-1 on CD4 T cells, in terms of differentiation, activation, and maintenance or survival.
Keywords: Th17 cells, Th2 cells, Th1 non-classic, IL-1RI and T cells, IL-1 and T cells
Citation: Santarlasci V, Cosmi L, Maggi L, Liotta F and Annunziato F (2013) IL-1 and T helper immune responses. Front. Immunol. 4:182. doi: 10.3389/fimmu.2013.00182
Received: 09 April 2013; Paper pending published: 12 May 2013;
Accepted: 24 June 2013; Published online: 15 July 2013.
Edited by:
Alberto Mantovani, University of Milan, Italy
Reviewed by:
Massimo Gadina, National Institutes of Health, USA
Hideki Ogura, Osaka University, Japan
Copyright: © 2013 Santarlasci, Cosmi, Maggi, Liotta and Annunziato. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in other forums, provided the original authors and source are credited and subject to any copyright notices concerning any third-party graphics etc.
*Correspondence: Francesco Annunziato, Department of Experimental and Clinical Medicine, University of Florence, V.le Pieraccini 6, Florence 50134, Italy e-mail: f.annunziato@dmi.unifi.it, francesco.annunziato@unifi.it

Mediators of Pruritus in Lichen Planus

Autoimmune Diseases
Volume 2013 (2013), Article ID 941431, 4 pages
http://dx.doi.org/10.1155/2013/941431
Review Article

Mediators of Pruritus in Lichen Planus

Department of Dermatology, Venereology and Allergology, Wroclaw Medical University, Ulica Chalubinskiego 1, 50-368 Wroclaw, Poland
Received 22 April 2013; Accepted 29 June 2013
Academic Editor: Jozélio Freire de Carvalho
Copyright © 2013 Kalina Welz-Kubiak and Adam Reich. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Lichen planus (LP) is an inflammatory mucocutaneous disease, showing a wide variety of clinical subtypes. The classic presentation of LP involves the appearance of polygonal, flat-topped, violaceous papules and plaques with reticulated white lines, termed “Wickham's striae”. Cutaneous lesions tend to be extremely pruritic, and this symptom does not subside after common antipruritic treatment. Moreover, based on our previous pilot study, it could be stated, that itch is the most unpleasant and bothersome symptom of LP for majority of patients suffering from this disease. However, the underlying mechanisms of itch in lichen planus remain still unknown. In addition, there is no study on mediators of this sensation, but taking into account pathogenesis of LP there are some possible mediators implicated to transmit or modulate itch. In pathogenesis of LP important are such mechanisms as apoptosis, autoimmune reaction, and role of stress. With these pathways some, previously described in other diseases, itch mediators such as cytokines, proteases, and opioid system are connected. Whether these mechanisms are involved in pruritus accompanying LP requires further investigation. Limited knowledge of pruritus origin in lichen planus is responsible for the lack of the effective antipruritic treatments. Here, we describe possible mechanisms participating the pathogenesis of pruritus in lichen planus.

Immunomodulator Clarithromycin Enhances Mucosal and Systemic Immune Responses and Reduces Re-Infection Rate in Pediatric Patients with Influenza

RESEARCH ARTICLE

Immunomodulator Clarithromycin Enhances Mucosal and Systemic Immune Responses and Reduces Re-Infection Rate in Pediatric Patients with Influenza Treated with Antiviral Neuraminidase Inhibitors: A Retrospective Analysis

  • Wakako Shinahara,
  •  
  • Etsuhisa Takahashi,
  •  
  • Takako Sawabuchi,
  •  
  • Masaru Arai,
  •  
  • Nobuo Hirotsu,
  •  
  • Yoshio Takasaki,
  •  
  • Shizuo Shindo,
  •  
  • Kyoko Shibao,
  • Takashi Yokoyama,
  •  
  • Kiyoshi Nishikawa,
  •  
  • Masahiro Mino,
  •  
  • Minako Iwaya,
  •  
  • Yuji Yamashita,
  •  [ ... ],
  •  
  • Hiroshi Kido mail
  • [ view all ]

  • Abstract

    Background/Aims

    Treatment with antiviral neuraminidase inhibitors suppresses influenza viral replication and antigen production, resulting in marked attenuation of mucosal immunity and mild suppression of systemic immunity in mice. This study investigated the effects of immunomodulator clarithromycin (CAM) supplementation on mucosal and systemic immunity in pediatric patients with influenza treated with neuraminidase inhibitors.

    Methods

    A retrospective, non-randomized case series study was conducted among five treatment groups of 195 children aged 5.9±3.3 years infected with influenza A in 2008/2009 season. The five treatment groups were oseltamivir (OSV), zanamivir (ZNV), OSV+CAM, ZNV+CAM and untreated groups. Anti-viral secretory IgA (S-IgA) levels in nasal washes and IgG levels in sera were measured. The re-infection rate was analyzed among the same five treatment groups in the 2009/2010 season.

    Results

    Treatment of influenza with OSV and ZNV for 5 days attenuated the induction of anti-viral S-IgA in nasal washes and anti-viral IgG in serum, compared with the untreated group. The combination of CAM plus OSV or ZNV boosted and restored the production of mucosal S-IgA and systemic IgG. The re-infection rates in the subsequent season were significantly higher in the OSV and ZNV groups than the untreated, while CAM+OSV and CAM+ZNV tended to reduce such rate.

    Conclusions

    CAM restored the attenuated anti-viral mucosal and systemic immunity and reduced the re-infection rate in the subsequent year in pediatric patients with influenza treated with OSV and ZNV.