Showing posts with label immunology research journals. Show all posts
Showing posts with label immunology research journals. Show all posts

Friday, 30 June 2017

Diagnosis of Association Ankylosing Spondylitis and Rheumatoid Arthritis

Ankylosing Spondylitis
The probability of one patient has ankylosing spondylitis (AS) and rheumatoid arthritis (RA) is low.

It is usually difficult to diagnose the association, indeed we require a careful diagnostic process and more tests are needed.

A 21-year-old female patient with coexisting AS and RA was reported here. 9 months later, she developed peripheral polyarthritis, erosion changes on the radiography of Metatarso-phalangeal (MTP), rheumatoid factor and cyclic citrullinated peptide antibody (anti-CCP) were positives. Here, we describe the diagnostic process that we followed.

Monday, 5 June 2017

Importance to Vaccination against Rabies in Travellers to Areas of Risk

Vaccination against Rabies
A patient returned from Algeria showing a grade III wound (WHO standard) produced by a dog bite, was treated with rabies nerve tissue vaccines (NTVs) lacked the rabies immunoglobin, and developed a visible local reaction to the vaccine.

The last WHO position paper (2010) recommends replacing nerve-tissue vaccines with CCVs. The nerve tissue vaccines induce more-severe adverse reaction sand are less immunogenic than CCVs.

It should be assessed in travellers to areas of risk, pre-exposure vaccination, and eliminated the need to the use of rabies globulin post exposition, and avoid as much as possible the use of of nerve-tissue vaccines.

Tuesday, 9 May 2017

How Phospholipase C Regulates Stress Tolerance and Development in Plants?

How Phospholipase C Regulates Stress Tolerance and Development in Plants?

Phospholipase C
Lipid signaling pathways regulate many cellular processes in eukaryotes. PLCs are the major players in lipid signaling, triggered by numerous environmental cues in plants.

After hydrolysis, DAG remains attached to the membrane and activates protein kinase C (PKC) while IP3 moves to the cytoplasm to bind ligand gated Ca2+ channels (IP3 receptors) resulting in the release of Ca2+ from the intracellular reservoirs.

This model doesn’t hold completely true and still debatable in plant system, as the level of PI P2 in plant membrane is very low, and no IP3 receptors, and equivalents of animal PKC have not been identified till date in plants.

Friday, 4 November 2016

Physiology and Medicine: The Gifted Saga of the Last Decade

Over the last century, Science and Technology moved forward and witnessed exceptional inventions and discoveries due to individual and collaborative research efforts. This momentum opened doors for the deep understanding of biological systems by which it permitted the advancement in technologies and designing of new tools in biomedical field.

Physiology and Medicine
Since 1901, discoveries and inventions in various fields of science (Chemistry, Physics, Physiology and Medicine, Economics) including literature which can influence the betterment of human race were being awarded with Nobel Prize.

Over the past decade, numerous groundbreaking discoveries in physiology and medicine have been reported. This short note is intended to summarize the significance of these findings and few remarkable controversies associated with them.

Tuesday, 4 October 2016

Neutrophil Biology: JAGN1 Deficiency is Responsible for Neutropenia

Granulocyte-Macrophage colony stimulating factor can salvage JAGN1 defect in bone marrow precursors causing congenital neutropenia. Neutrophils are the sentinel of host immune systems that are dispatched to surveil, engage and combat microbial pathogens.

Neutropenia
Neutropenic patients with low neutrophil counts are unable to mount neutrophil based immune responses and as a result become vulnerable to infections. JAGN1 encoding Jagunal homolog 1 expressed in hematopoietic progenitors and it’s deficiency makes neutrophil incompetent effector cells.

In JAGN1 mutant mice, Penniger et al. demonstrated that the defect in JAGN1 function is rescued by granulocyte/ macrophage colony stimulating factor (GM-CSF) when afflicted by Candida albicans.

Friday, 23 September 2016

Eph/Ephrin-mediated Mesenchymal Stem Cell Regulation of T-cell Activation and Function

Mesenchymal stem cells (MSC) are self-renewing stem cells identified in rodent and human bone marrow aspirates based on their ability to form adherent clonogenic clusters (CFU-F; colony forming units-fibroblastic) in vitro, and by their capacity to differentiate into multiple specialized mesodermal cell lineages.

Similar MSC-like populations have been described in various tissues with different growth and differentiation potentials. These MSC-like populations share a common immunophenotype based on the cell surface expression of various markers, but not limited, to STRO-1, CD73, CD105, CD106, CD90, CD146 and CD166, while lacking expression of CD34, CD3, CD14, CD19, CD31, CD34, CD45, Glycophorin-A and HLA-DR.

In the last few decades, MSC have generated considerable interest due to their production of cytokines and growth factors, which act as potent mediators of angiogenesis, regeneration of damaged tissues, hematopoiesis and immune cell responses. In particular, the paracrine properties of MSC, makes them highly desirable as potential cellular therapies to treat a variety of immune/inflammatory based diseases and conditions.


Tuesday, 20 September 2016

Anti-inflammatory Effects of Kelussia odoratissima in Rats Model of Rheumatoid Arthritis

Rheumatoid arthritis (RA) is a chronic inflammatory autoimmune disease of the joints and other body organs, which 1 % of the human population is affected. RA induced in the fourth and fifth decades of life and in women is more common. Kelussiao doratissima contains compounds such as flavonoids, mainly aggregated in the inflorescence and stems of Kelussia, has anti-inflammatory effects. Present study aimed to investigate the anti-inflammatory effect of Kelussia odoratissima on rheumatoid arthritis induced in Wistar rats.

Rats Model of Rheumatoid Arthritis
A total of 30 female Wistar rats using subcutaneous injection of complete Freund's adjuvant has been induced and were randomly divided into five groups containing negative control (no treatment), positive control (receiving indomethacin (3mg/ Kg) and three rheumatoid arthritis group receiving three different doses (100,200and 300mg/kg) of hydroalcoholic Kelussia odoratissima extract. material injection were tested in the animals for 10 days.

The symptoms of Rheumatoid arthritis were evaluated according to standardized scoring method at paw and double-blind for the different categories daily. CRP levels were measured and Data were analyzed using the SPSS statistical program (version 17 for Windows). In all the cases for comparison between different groups, Mann-Whitney U-test was used.

Monday, 19 September 2016

Solute Carrier Family 6 Member 12 Gene Polymorphisms in Japanese Patients with Aspirin-Exacerbated Respiratory Disease

Aspirin-exacerbated respiratory disease (AERD), so-called aspirinintolerant asthma, is a clinical syndrome characterized by severe asthmatic attacks after ingestion of aspirin and/or nonsteroidal antiinflammatory drugs (NSAIDs). AERD is known to be associated with less atopic tendency, persistent eosinophilic infiltration in the airway mucosa, and a more severe clinical course.

Respiratory Disease
The inhibitory action of aspirin and NSAID on cyclooxygenase activity may cause diversion to the 5-lipoxygenase pathway, leading to the overproduction of cysteinyl leukotrienes (LTs). A general consensus exists that increased levels of cysteinyl LTs are key inflammatory mediators in AERD.

However, a study of Japanese asthmatic patients demonstrated that prostaglandin D2 was overproduced during aspirin-intolerant bronchoconstriction, and the urinary concentrations of LTE4 and metabolites of prostaglandin D2 correlatively increased during the reaction.


Wednesday, 14 September 2016

Monocyte-Induced Prostate Cancer Cell Invasion is Mediated by Chemokine ligand 2 and Nuclear Factor-?B Activity

Prostate cancer is the most common malignancy in American men and metastases are responsible for most prostate cancer mortality. Cancer metastasis is a multistep process in which the tumor microenvironment plays a role to promote aggressive cancer cell behavior. Inflammatory stimuli, especially involving macrophages and their accompanying cytokines are increasingly recognized factors that can promote cancer progression, but how this occurs is not fully understood.
and Nuclear Factor

Tumor-associated macrophages (TAM) and stromal cells may support tumor progression by promoting angiogenesis, immune suppression or direct effects on tumor cells. Co-cultures of breast cancer cells and monocytes have been shown to express cell-secreted factors which cause paracrine stimulation of tumor growth and progression. Several tumor specific cell-secreted factors have been identified that mediate interactions between cancer cells and monocytes. Paracrine stimulation of prostate cancer cells and monocytes has been hypothesized; however, studies are needed to determine precisely how prostate cancer cells and monocytes crosscommunicate to promote prostate cancer growth and progression.

Several cytokines and chemokines are produced by macrophages in the tumor microenvironment including IL-8, stromal-derived factor-1 (SDF-1) and CCL2. Prostate cancer cells express receptors for these and other chemokines and can respond to stimulation with growth, proliferation and metastasis. Interleukin 8 produced at high levels by prostate cancer cells can promote angiogenesis and androgen independent tumor growth. Prostate cancer cells that express CCL2 have been shown to cause monocyte and osteoclast recruitment with resulting cancer cell growth and survival.

Tuesday, 13 September 2016

Factors associated with Synchronous Endometrial and Ovarian Cancer

A 54-year-old perimenopausal woman complained of abnormal uterine bleedings and lower abdominal pain for 6 months. Personal antecedents were smoking, hypertension, chronic obstruction pulmonary disease, obstructive sleep apnea, obesity (BMI 42.7 kg/m2) and nulliparity.The first exploration showed high tumor markers (Ca125 890 UI/ml, Ca19.9 960 UI/ml) and an enlarged uterus with thickened endometrium, but the gynecological examination was unreliable.

Ovarian Cancer
A diagnostic hysteroscopy showed an abnormal growth on the entire endometrial cavity with atypical vascularization. Biopsy was consistent with low-grade endometrial adenocarcinoma.The pelvic magnetic resonance (MR) showed a large uterus, occupied by an endometrial carcinoma 4 mm close to theArchives of Inflammation welcomes research submissions on all aspects of inflammation which is an open access, peer-reviewed online journal. The intention is that the journal should reflect both the experimental and clinical aspects of inflammation.

We will facilitate article submission, rapid article quality assurance through 'peer review', article formatting and processing to a final product which will allow high visibility, impact and provoke debate.uterine serosa. There was an invasion to the cervix stromal, a left 20 cm heterogeneous and a hypovascular multiloculated adnexal mass adhered to mesosigma. No ascites or carcinomatosis were found.A computerized tomography (CT) was performed finding a 6 cm solid left renal tumor suspicious of malignancy, and unspecific pelvic and paraaortic lymph nodes.


Friday, 9 September 2016

Prophylactic EBV Vaccines and its Development

Epstein-Barr virus (EBV) is an important global human pathogen found in over 90% of the world’s population. EBV infection usually occurs in young children and causes no or only nonspecific symptoms. However, EBV is the major cause of infectious mononucleosis. EBV is an oncogenic virus associated with various human malignancies of both epithelial and lymphoid origin such as nasopharyngeal carcinoma, a subset of gastric carcinoma (GC), Burkitt’s lymphoma (BL), Hodgkin lymphoma and post-transplant lymphoproliferative disorder (PTLD).

Almost 200,000 cases of EBV-associated malignancies occur each year worldwide. Currently, no vaccine has been licensed to prevent EBV infection or EBV-associated diseases. There is an urgent need for the development of EBV vaccines. Although a vaccine to prevent EBV infection was proposed as long ago as 1973, the development of an EBV vaccine has been agonizingly slow.EBV major envelope glycoprotein gp350 has been widely considered as an attractive candidate for a prophylactic EBV vaccine.

The reason for choosing gp350 is that EBV causes infection predominantly by binding gp350 to the CD21 receptor on the surface of B lymphocytes. Numerous studies have demonstrated the efficacy of gp350-based vaccines. Prophylactic EBV vaccines have been evaluated in controlled clinical trials vaccinated adults, children and infants in China with a single dose of vaccinia virus expressing gp350. 

Prophylactic EBV Vaccines and its Development

Epstein-Barr virus (EBV) is an important global human pathogen found in over 90% of the world’s population. EBV infection usually occurs in young children and causes no or only nonspecific symptoms. However, EBV is the major cause of infectious mononucleosis. EBV is an oncogenic virus associated with various human malignancies of both epithelial and lymphoid origin such as nasopharyngeal carcinoma, a subset of gastric carcinoma (GC), Burkitt’s lymphoma (BL), Hodgkin lymphoma and post-transplant lymphoproliferative disorder (PTLD).

Almost 200,000 cases of EBV-associated malignancies occur each year worldwide. Currently, no vaccine has been licensed to prevent EBV infection or EBV-associated diseases. There is an urgent need for the development of EBV vaccines. Although a vaccine to prevent EBV infection was proposed as long ago as 1973, the development of an EBV vaccine has been agonizingly slow.EBV major envelope glycoprotein gp350 has been widely considered as an attractive candidate for a prophylactic EBV vaccine.

The reason for choosing gp350 is that EBV causes infection predominantly by binding gp350 to the CD21 receptor on the surface of B lymphocytes. Numerous studies have demonstrated the efficacy of gp350-based vaccines. Prophylactic EBV vaccines have been evaluated in controlled clinical trials vaccinated adults, children and infants in China with a single dose of vaccinia virus expressing gp350.