Archive for the ‘Bartonella’ Category

Ocular Complications of Cat Scratch Disease

https://www.ncbi.nlm.nih.gov/pubmed/32122915/

2020 Mar 2. pii: bjophthalmol-2019-315239. doi: 10.1136/bjophthalmol-2019-315239. [Epub ahead of print]

Ocular complications of cat scratch disease.

Abstract

Cat scratch disease (CSD) in humans is caused by infection with Bartonella henselae or other Bartonella spp. The name of the disease reflects the fact that patients frequently have a history of contact (often involving bites or scratches) with infected cats. Patients with CSD typically develop lesions at the site where the skin is broken together with regional lymphadenopathy but may go on to exhibit systemic symptoms and with deep-seated infections at a range of sites including the eye. Patients with CSD may present with a range of inflammatory eye conditions, including Parinaud’s oculoglandular syndrome, neuroretinitis, multifocal retinitis, uveitis and retinal artery occlusion. Bartonella spp. are fastidious bacteria that are difficult to culture from clinical specimens so microbiological diagnosis is frequently made on the basis of positive serology for anti-Bartonella antibodies or detection of bacterial DNA by PCR. Due to the lack of clinical trials, the evidence base for optimal management of patients with CSD-associated eye infections (including the role of antibiotics) is weak, being derived from single reports or small, uncontrolled case series.

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**Comment**

This study states what the rest of us all know – there is a lack of research on Bartonella yet it is everywhere:  https://madisonarealymesupportgroup.com/2020/02/19/bartonella-infection-everywhere-but-we-dont-know-about-it/

https://madisonarealymesupportgroup.com/2019/04/24/human-bartonellosis-an-underappreciated-public-health-problem/

https://madisonarealymesupportgroup.com/category/bartonella-treatment/

https://madisonarealymesupportgroup.com/2019/01/02/bartonella-in-entire-canadian-family/

https://madisonarealymesupportgroup.com/2019/04/08/case-series-bartonella-ocular-manifestations/

https://madisonarealymesupportgroup.com/2018/09/06/ocular-manifestations-of-bartonellosis/

And please know you don’t have to be exposed to cats to get it:  https://madisonarealymesupportgroup.com/2018/07/10/bartonella-henselae-neuroretinitis-in-patients-without-cat-scratch/

You also don’t have to be immunocompromised to get it:  https://madisonarealymesupportgroup.com/2019/12/18/multifocal-hepatic-abscess-in-immunocompetent-patient-due-to-bartonella-henselae-case-report-with-review-of-literature/

Bartonella Case – Eschar & Enlarged Lymph Nodes

https://www.ncbi.nlm.nih.gov/pubmed/32164559

2020 Mar 12;20(1):216. doi: 10.1186/s12879-020-4940-0.

Scalp eschar and neck lymphadenopathy after tick bite (SENLAT) caused by Bartonella henselae in Korea: a case report.

Abstract

BACKGROUND:

Tick-borne lymphadenopathy (TIBOLA) is an infectious disease, mainly caused by species from the spotted fever group rickettsiae and is characterized by enlarged lymph nodes following a tick bite. Among cases of TIBOLA, a case of scalp eschar and neck lymphadenopathy after tick bite (SENLAT) is diagnosed when an eschar is present on the scalp, accompanied by peripheral lymphadenopathy (LAP). Only a few cases of SENLAT caused by Bartonella henselae have been reported.

CASE PRESENTATION:

A 58-year-old male sought medical advice while suffering from high fever and diarrhea. Three weeks before the visit, he had been hunting a water deer, and upon bringing the deer home discovered a tick on his scalp area. Symptoms occurred one week after hunting, and a lump was palpated on the right neck area 6 days after the onset of symptoms. Physical examination upon presentation confirmed an eschar-like lesion on the right scalp area, and cervical palpation revealed that the lymph nodes on the right side were non-painful and enlarged at 2.5 × 1.5 cm. Fine needle aspiration of the enlarged lymph nodes was performed, and results of nested PCR for the Bartonella internal transcribed spacer (ITS) confirmed B. henselae as the causative agent.

CONCLUSION:

With an isolated case of SENLAT and a confirmation of B. henselae in Korea, it is pertinent to raise awareness to physicians in other Asian countries that B. henselae could be a causative agent for SENLAT.

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For more:  https://madisonarealymesupportgroup.com/category/bartonella-treatment/

https://madisonarealymesupportgroup.com/2019/04/24/human-bartonellosis-an-underappreciated-public-health-problem/

https://madisonarealymesupportgroup.com/2020/02/19/bartonella-infection-everywhere-but-we-dont-know-about-it/

Is Your Child Crazy, or Sick? Mental Illness vs. Medical Disorder

https://www.lymedisease.org/kinderlehrer-crazy-sick/

Is your child crazy, or sick? Mental illness vs. medical disorder

 

 

 

Brain Aneurysm Caused By Bartonella

https://www.ncbi.nlm.nih.gov/pubmed/32135054

2020 Feb;73(2):68-70.

Mycotic Aneurysm of the Middle Cerebral Artery Leading to Subarachnoid Hemorrhage, as the Initial Presentation of Bartonella henselae Endocarditis.

Abstract

Bartonella species was first reported as a cause of endocarditis in 1993, currently it is thought to account for 3-4 percent of all diagnosed cases. Initial symptoms of Bartonella endocarditis are non-specific like weight loss, fever and fatigue. There are very few reported cases of Bartonella endocarditis causing mycotic aneurysm.

We present a case of a 60-year-old male who presented with subarachnoid hemorrhage secondary to mycotic aneurysm. Due to high suspicion of endocarditis leading to mycotic aneurysm he underwent transesophageal echocardiography which showed mitral valve vegetations. His blood cultures were negative, he was eventually diagnosed with Bartonella henselae by elevated IgG titers greater than 1:800. Due to repeated mycotic aneurysms on antibiotics, he underwent surgical mitral valve replacement along with the full course of antibiotics and has been asymptomatic since.

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**Comment**

A mycotic aneurysm is an aneurysm caused by the growth of fungi or bacteria within the vascular wall, usually following impaction of a septic embolus.  https://medical-dictionary.thefreedictionary.com/mycotic+aneurysm

In this case, Bartonella is the culprit and the patient presented with bleeding in the brain.

Please note the blood culture was negative.

Also note the “repeated mycotic aneurysms on antibiotics.”  I’m not pointing this out to avoid antibiotics but to show that there can be side-effects of treatment.

For more:  https://madisonarealymesupportgroup.com/category/bartonella-treatment/

https://madisonarealymesupportgroup.com/2019/04/24/human-bartonellosis-an-underappreciated-public-health-problem/

https://madisonarealymesupportgroup.com/2020/02/19/bartonella-infection-everywhere-but-we-dont-know-about-it/

 

Bartonella vinsonii subs. arupensis in Animals, and Yes – Humans

https://www.ncbi.nlm.nih.gov/pubmed/32071727

2020 Jan 16;34:100652. doi: 10.1016/j.nmni.2020.100652. eCollection 2020 Mar.

Bartonella vinsonii subsp. arupensis infection in animals of veterinary importance, ticks and biopsy samples.

Abstract

Testing for vector-borne pathogens in livestock is largely reliant upon blood and tissue. The role of biopsy samples remains poorly explored for detecting tick-borne bacteria in animals. In a 2-year survey, animals of veterinary importance from farms throughout the northern part of Greece were routinely checked for the presence of biopsy samples. Where detected, either a portion or a biopsy was collected together with whole blood samples and any ticks at the site of the biopsy sample. Molecular testing was carried out by real-time PCR targeting the internal transcribed spacer gene of Bartonella species. A total of 68 samples (28 blood samples, 28 biopsy samples and 12 ticks (nine Rhipicephalus bursa and three Rhipicephalus turanicus)) were collected from goats (64 samples) and cattle (four samples).

  • Eight (11.8%) of the 68 samples were positive for Bartonella species.
  • Of the biopsy and whole blood samples, four (14.3%) of each type were positive for Bartonella species.
  • None of the ticks tested positive for Bartonella species.
  • All pairs of positive biopsy samples/whole blood samples originated from the same animals.
  • Positive samples were identified as

Although many more samples from a much wider spectrum of animal species is required before concluding upon the merit of biopsy samples in the study of tick-borne diseases, the significance of our finding warrants further study, both for clinical consequences in small ruminants and for those humans who are farming infected animals.

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**Comment**

Bartonella vinsonii subsp. arupensis has been found in humans:  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3358162/

Excerpt:

B. vinsonii subsp. arupensis was first isolated from a bacteremic cattle rancher in Wyoming, USA, in 1999 (). Later studies showed that strains identical to B. vinsonii subsp. arupensis were highly prevalent among deer mice (Peromyscus maniculatus), a strictly North American rodent species frequently found across a wide geographic area, including Wyoming. Similar strains of B. vinsonii subsp. arupensis have not been found in other animals in North America, suggesting that deer mice are natural hosts of this bacterium ().

However, the proposed link between infected mice and B. vinsonii subsp. arupensis infection in humans was challenged when this bacterium was reported in an endocarditis patient in France () and 2 febrile patients in Russia (). The link was further disputed after identification of B. vinsonii subsp. arupensis infection in 2 humans in Thailand () and the subsequent inability to identify this strain or related species among the local rodent population, despite intensive investigation in different parts of Thailand (). B. vinsonii subsp. arupensis was also identified in stray dogs in Thailand (). In addition, B. vinsonii subsp. arupensis–specific antibodies were reported in febrile patients from Nepal (). Together, these reports suggest that the spectrum of animal hosts carrying B. vinsonii subsp. arupensis may be underestimated. We report the identification of B. vinsonii subsp. arupensis in 4 more patients in Thailand.

The 1999 study on the discovery of Bartonella vinsonii subs. arupensis in the human cattle rancher states this:

Excerpt:

The highest level of relatedness was observed with recently characterized strains from naturally infected mice that were coinfected with Borrelia burgdorferi and Babesia microti. We propose the name Bartonella vinsonii subsp. arupensis subsp. nov. as the new subspecies to accommodate these human and murine isolates.  https://www.ncbi.nlm.nih.gov/pmc/articles/PMC85292/

For more:  https://madisonarealymesupportgroup.com/2016/01/03/bartonella-treatment/