The effects of systemic and local injections of gabapentin, a novel anticonvulsant agent, were tested on nociceptive behaviors in mice with acute herpetic pain. Transdermal infection with herpes simplex virus type-1 (HSV-1) produced nociceptive hypersensitivity of the infected hind paw to innocuous (allodynia) and noxious mechanical stimulation (hyperalgesia) with von Frey filaments. Systemic a...

T-DNA disruption mutations in the AtHKT1 gene have previously been shown to suppress the salt sensitivity of the sos3 mutant. However, both sos3 and athkt1 single mutants show sodium (Na+) hypersensitivity. In the present study we further analyzed the underlying mechanisms for these non-additive and counteracting Na+ sensitivities by characterizing athkt1-1 sos3 and athkt1-2 sos3 double mutant ...

BACKGROUND The cooling agents menthol and icilin act as agonists at TRPM8 and TRPA1. In vitro, activation of TRPM8 by icilin and cold, but not menthol, is dependent on the activity of a sub-type of phospholipase A2, iPLA2. Lysophospholipids (e.g. LPC) produced by PLA2 activity can also activate TRPM8. The role of TRPA1 as a primary cold sensor in vitro is controversial, although there is eviden...

Using bioinformatics approaches, 34 potential multidrug resistance (MDR) transporter sequences representing 4 different transporter families were identified in the unannotated Enterococcus faecalis database (TIGR). A functional genomics campaign generating single-gene insertional disruptions revealed several genes whose absence confers significant hypersensitivities to known antimicrobials. We ...

Tattoo artists use many compounds to create tattoo pigment and several allergic reactions can occur as a result of these additives. The compositions of many inks have been identified; however, as new mixtures are created it becomes difficult to identify the specific ingredients in a particular ink. Allergic reactions to a particular pigment can manifest in several ways including allergic contac...

Pharmacologic hypersensitivities commonly express cutaneous manifestations, and the highest mortality is found in Stevens Johnson’s syndrome and toxic epidermal necrolysis, mostly associated with antibiotics and anticonvulsive drugs. Toxic epidermal necrolysis is related in 80% of cases to pharmacologic hypersensitivity and systemic consequences may be found; hepatic injury has been described, ...

Background Penicillin allergy is a major concern among patients and physicians. There’s an estimated 5-10% self reported history of penicillin allergy by patients, but vast majority are not true hypersensitivities. Complete penicillin skin test with both major, minor determinants and amoxicillin is the test of choice for diagnosing IgE-mediated penicillin allergy. While Penicilloyl polylysine (...

The last two years have seen the publication of 3 major guidelines on the diagnosis and management of food hyper-sensitivity (FHS) [1–3]. These guidelines have highlighted important issues in dealing with those with FHS, primarily food allergies. Dealing with adults and children with food allergies requires the healthcare professional to have an understanding of the immune mechanisms involved i...

The hypothesis that some children with attention-deficit hyperactivity disorder (ADHD) may show sensitivity or allergic reactions to various food items has led the development of oligoantigenic diet. The rationale diet is eliminate certain foods from in order exclude potential allergens contained either naturally artificial ingredients allergenic properties. attempts identify individual whi...