All Posts Tagged With: "antimicrobial"

Full article: http://www.lymeneteurope.org/forum/viewtopic.php?f=7&t=1336#p9502

Excerpt:

Abstract
Using PCR in conjunction with pre-enrichment culture, we detected Bartonella henselae and B. vinsonii subspecies berkhoffii in the blood of 14 immunocompetent persons who had frequent animal contact and arthropod exposure.

Attempts to isolate Bartonella sp. from immunocompetent persons with serologic, pathologic, or molecular evidence of infection are often unsuccessful; several investigators have indicated that Bartonella isolation methods need to be improved (1–4). By combining PCR and pre-enrichment culture, we detected B. henselae and B. vinsonii subspecies berkhoffii infection in the blood of immunocompetent persons who had arthropod and occupational animal exposure

The Study

From November 2004 through June 2005, blood and serum samples from 42 persons were tested, and 14 completed a questionnaire, approved by the North Carolina State University Institutional Review Board. Age, sex, animal contact, history of bites, environment, outdoor activity, arthropod contact, travel, and medical history were surveyed. Bacterial isolation, PCR amplification, and cloning were performed by using previously described methods (5–7). Each blood sample was tested by PCR after direct DNA extraction, pre-enrichment culture for at least 7 days, and subculture onto a blood agar plate (Figure). An uninoculated, pre-enrichment culture was processed simultaneously as a control. Methods used for DNA extraction and conventional and real-time PCR targeting of the Bartonella 16S-23S intergenic spacer (ITS) region and heme-binding protein (Pap31) gene have been described (7,8). Conventional PCR amplicons were cloned with the pGEM-T Easy Vector System (Promega, Madison, WI, USA); sequencing was performed by Davis Sequencing, Inc. (Davis, CA, USA). Sequences were aligned and compared with GenBank sequences with AlignX software (Vector NTI Suite 6.0 (InforMax, Inc., Bethesda, MD, USA) (7,8). B. vinsonii subsp. berkhoffii, B. henselae, and B. quintana antibodies were determined by using a modification of a previously described immunofluorescence antibody assay (IFA) procedure (9

Study participants included 12 women and 2 men, ranging in age from 30 to 53 years; all of them reported occupational animal contact for >10 years (Table). Most had daily contact with cats (13 persons) and dogs (12 persons). All participants reported animal bites or scratches (primarily from cats) and arthropod exposure, including fleas, ticks, biting flies, mosquitoes, lice, mites, or chiggers. All participants reported intermittent or chronic clinical symptoms, including fatigue, arthralgia, myalgia, headache, memory loss, ataxia, and paresthesia (Table). Illness was most frequently mild to moderate in severity, with a waxing and waning course, and all but 2 persons could perform occupational activities. Of the 14 participants, 9 had been evaluated by a cardiologist, 8 each by an infectious disease physician or a neurologist, and 5 each by an internist or a rheumatologist. Eleven participants had received antimicrobial drugs.

Microbiology and Clinical Microbiology Department, Cerrahpasa Medical
Faculty, Istanbul University, Kocamustafapasa, 34303, Istanbul, Turkey.

Juvenile idiopathic arthritis (JIA) is a disease that was prominent with
increased inflammation response in immune system, appeared mostly with
peripheral arthritis and endogenous and exogenous antigens play a role
in the pathogenesis of disease. Two major reasons were thinking to be
considerably important. First of them is immunological predisposition
and the second one is environmental factors. Continued

Traditional Chinese medicine commands a unique position among all traditional medicines because of its 5000 years of history. Our own interest in natural products from traditional Chinese medicine was triggered in the 1990s, by artemisinin‐type sesquiterpene lactones from Artemisia annua L. As demonstrated in recent years, this class of compounds has activity against malaria, cancer cells, and schistosomiasis. Interestingly, the bioactivity of artemisinin and its semisynthetic derivative artesunate is even broader and includes the inhibition of certain viruses, such as human cytomegalovirus and other members of the Herpesviridae family (e.g., herpes simplex virus type 1 and Epstein‐Barr virus), hepatitis B virus, hepatitis C virus, and bovine viral diarrhea virus. Analysis of the complete profile of the pharmacological activities and molecular modes of action of artemisinin and artesunate and their performance in clinical trials will further elucidate the full antimicrobial potential of these versatile pharmacological tools from nature. Continued

Only two spirochetal infections are known to cause nervous system infection and
damage: neurosyphilis and neuroborreliosis (nervous system Lyme disease).
Diagnosis of both generally relies on indirect tools, primarily assessment of
the host immune response to the organism. Reliance on these indirect measures
poses some challenges, particularly as they are imperfect measures of treatment
response. Despite this, both infections are known to be readily curable with
straightforward antimicrobial regimens. The challenge is that, untreated, both
infections can cause progressive nervous system damage. Although this can be
microbiologically cured, the threat of permanent resultant neurologic damage,
often severe in neurosyphilis and usually less so in neuroborreliosis, leads to
considerable concern and emphasizes the need for prevention or early and
accurate diagnosis and treatment.