Read by QxMD icon Read

H. Cinaedi

Jonathan E Schmitz, Takako Taniguchi, Naoaki Misawa, Timothy L Cover
: Helicobacter cinaedi is an emerging opportunistic pathogen associated with infections of diverse anatomic sites. Nevertheless, the species demonstrates fastidious axenic growth-it is described as requiring a microaerobic atmosphere, along with a strong preference for supplemental H2-gas. In this context, we examined the hypothesis that in vitro growth of H. cinaedi could be enhanced by co-culture with human epithelial cells. When inoculated (in Ham's F12) over Caco-2 monolayers, the type strain (ATCC BAA-847(T)) gained the ability to proliferate under H2-free aerobic conditions...
September 9, 2016: Applied and Environmental Microbiology
Chloë De Witte, Christian Schulz, Annemieke Smet, Peter Malfertheiner, Freddy Haesebrouck
This article aimed to review the literature from 2015 dealing with gastric and enterohepatic non-Helicobacter pylori Helicobacter species (NHPH). A summary of the gastric microbiota interactions with H. pylori is also presented. An extensive number of studies were published during the last year and have led to a better understanding of the pathogenesis of infections with NHPH. These infections are increasingly reported in human patients, including infections with H. cinaedi, mainly characterized by severe bacteremia...
September 2016: Helicobacter
Ayush Puri, Arshiya Rai, P S Dhanaraj, Rup Lal, Dev Dutt Patel, Anju Kaicker, Mansi Verma
Helicobacter is an economically important genus within the phylum Proteobacteria and include many species which cause many diseases in humans. With the conventional methods, it is difficult to identify them easily due to the high genetic similarity among its species. In the present study, 361 16S rRNA (rrs) gene sequences belonging to 45 species of genus Helicobacter were analyzed. Out of these, 264 sequences of 10 clinically relevant species (including Helicobacter pylori) were used. rrs gene sequences were analyzed to obtain a phylogenetic framework tree, in silico restriction enzyme analysis and species-specific conserved motifs...
September 2016: Indian Journal of Microbiology
Yoshiaki Kawamura, Junko Tomida, Tohru Miyoshi-Akiyama, Tatsuya Okamoto, Masashi Narita, Katsuhiko Hashimoto, Margo Cnockaert, Peter Vandamme, Yuji Morita, Tomohiro Sawa, Takaaki Akaike
During the course of our taxonomic investigation of Helicobacter cinaedi, it was realized that the strains isolated from dogs, which have been identified as H. cinaedi, showed different biochemical traits than did the isolates obtained from humans. None of the three dog isolates could reduce nitrate to nitrite, whereas all of the human H. cinaedi isolates could do so. The dog isolates showed a strong positive alkaline phosphatase reaction and could grow at 42°C, however the human isolates showed negative to very weak responses to those tests...
July 2016: Systematic and Applied Microbiology
Soichiro Abiko, Itaru Nakamura, Yoshiko Yamaguchi, Kiyofumi Ohkusu, Yoji Hirayama, Tetsuya Matsumoto
We report the first case of cerebral cyst infection of H. cinaedi, a fastidious spiral-shaped gram-negative rod bacterium.A 70-year-old man visited our hospital with a fever persisting for 2 weeks. He had received surgery and radiotherapy for parapharyngeal space squamous cell carcinoma 10 years ago. The radiotherapy had resulted in a cerebral cyst as a side effect, and an Ommaya reservoir had been inserted into the cyst. Blood culture and analysis of the brain cyst fluid revealed the presence of spiral-shaped gram-negative rod bacteria, which were identified as Helicobacter cinaedi by polymerase chain reaction...
June 30, 2016: Japanese Journal of Infectious Diseases
Yuichi Shimizu, Harumi Gomi, Haruhiko Ishioka, Momoko Isono
Helicobacter cinaedi is known to cause bacteremia with multi-focal cellulitis, usually, among immunocompromised patients. We report here a 54-year-old Japanese man who was found to have bacteremia complicated with bilateral lower extremities cellulitis due to H. cinaedi. This patient did not have any immunocompromised conditions including Human Immunodeficiency Virus infection. In this patient, the cellulitis was multi-focal which is rare among immunocompetent patients. In addition, interestingly, the cellulitis was symmetrically on the both sides on the lower dorsal part of the extremities...
2016: IDCases
Sho Saito, Mika Tsukahara, Kiyofumi Ohkusu, Hanako Kurai
Helicobacter fennelliae is a gram-negative, spiral bacillus that appears as thin-spread colonies on sheep blood agar and is similar to Helicobacter cinaedi. H fennelliae is diagnosed by genetic testing, which is not readily available in all laboratories. Therefore, H fennelliae bacteremia has only been reported sporadically, and little is known about its clinical characteristics.We describe 3 cases of H fennelliae bacteremia with gastrointestinal symptoms, including nausea, vomiting, and diarrhea. Isolates could be differentiated from H cinaedi by biochemical reaction testing, including nitrate reduction and alkaline phosphatase hydrolysis...
May 2016: Medicine (Baltimore)
Meiwa Toyofuku, Junko Tomida, Yoshiaki Kawamura, Ippei Miyata, Yuki Yuza, Yuho Horikoshi
This is the first report of penicillin/cephalosporin-resistant Helicobacter cinaedi arising from prolonged treatment. H. cinaedi, common among immunocompromised patients, caused recurrent bacteremia and cellulitis in a 19-year-old Japanese man with X-linked agammaglobulinemia. The minimal inhibitory concentration of these drugs was raised, which subsequently resulted in clinical failure. Prolonged suboptimal treatment may cause bacterial resistance to β-lactam antibiotics in H. cinaedi. It is possible that this resistance may have contributed to the treatment failure...
October 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
Yohei Maki, Seishi Furukawa, Yuki Kodama, Kaeko Sumiyoshi, Emi Kino, Hiroshi Sameshima
Helicobacter cinaedi is a rare pathogen but known to cause bacteremia, cellulitis and enterocolitis. Recently, cases of involving various organs are increasingly reported such as endocarditis, meningitis, and kidney cyst infection. We report a case of intrauterine H. cinaedi infection leading preterm birth and neonatal sepsis. A 29-year-old pregnant women who was no underlying disease hospitalized due to threatened preterm labor at 22 weeks of gestation. Clinical findings showed uterine tenderness, fever, leukocytosis and elevated C-reactive protein...
June 2016: Journal of Infection and Chemotherapy: Official Journal of the Japan Society of Chemotherapy
Takako Taniguchi, Wataru Yamazaki, Yuji Saeki, Ichiro Takajo, Akihiko Okayama, Tetsuya Hayashi, Naoaki Misawa
Helicobacter cinaedi infection has been recognized as an increasingly important emerging disease in humans. Infection with H. cinaedi causes bacteremia, cellulitis and enteritis. H. cinaedi has been isolated from non-human sources, including dogs, cats and rodents; however, it remains unclear whether animal strains are pathogenic in humans and as zoonotic pathogens. In this study, H. cinaedi isolates were recovered from a dog and a hamster, and the ability of these isolates to adhere to, invade and translocate across polarized human intestinal epithelial Caco-2 cells was examined in vitro...
May 3, 2016: Journal of Veterinary Medical Science
S Shimizu, H Shimizu
Helicobacter cinaedi is an emerging Gram-negative spiral bacillus that was first reported in 1984. It has been implicated as a cause of gastroenteritis and bacteraemia in immunocompromised individuals. Helicobacter cinaedi-associated bacteraemia is sometimes accompanied by skin lesions; however, the cutaneous manifestations of this pathogen are not widely known. To our knowledge, a comprehensive review with detailed analysis of skin lesions associated with H. cinaedi has not been conducted. This article summarizes the clinical appearance of H...
July 2016: British Journal of Dermatology
A Imafuku, H Araoka, K Tanaka, Y Marui, N Sawa, Y Ubara, K Takaichi, Y Ishii, S Tomikawa
Helicobacter cinaedi can cause bacteremia mainly in immunocompromised patients. We present the clinical characteristics of H. cinaedi bacteremia in 4 renal transplant patients. Interestingly, all cases showed triggers of bacterial translocation: 2 cases developed after colonic perforation caused by diverticulitis, 1 case developed post cholecystectomy, and the remaining patient had chronic diarrhea. Accordingly, bacterial translocation caused by severe gastrointestinal complication could be a cause of H. cinaedi bacteremia...
February 2016: Transplant Infectious Disease: An Official Journal of the Transplantation Society
Hans Linde Nielsen, Jørgen Prag, Karen Angeliki Krogfelt
An otherwise healthy 36-year-old man was hospitalised due to a traumatic tear of the meniscus in the left knee. An arthroscopy was performed and his meniscus was partially resected. Thirty days later, he was rehospitalised with arthritis in the left knee and cellulitis on the left tibia. Helicobacter cinaedi was isolated from the synovial fluid, which was incubated in a BACTEC Paediatric bottle. The patient was treated with oral rifampicin and moxifloxacin for 6 weeks with good clinical response without relapse...
2015: BMJ Case Reports
Bram Flahou, Emiko Rimbara, Shigetarou Mori, Freddy Haesebrouck, Keigo Shibayama
In the past year, a substantial number of (putative) novel Helicobacter species have been described, including Helicobacter himalayensis colonizing the Himalayan marmot and Helicobacter apodemus, colonizing the Korean striped field mouse. In addition, a putative novel gastric Helicobacter species was identified in wild gorillas and chimpanzees, for which the name "Candidatus H. homininae" was proposed. A high incidence of gastric non-H. pylori Helicobacter infection was described in China and multiple case reports have described the involvement of enterohepatic Helicobacter species, especially Helicobacter cinaedi, in a wide range of diseases...
September 2015: Helicobacter
Yuto Haruki, Hideharu Hagiya, Toshiyuki Hashimoto, Takayoshi Miyake, Tomoko Murase, Akane Matsuo, Tetsuhiro Sugiyama, Sachiyo Kondo
We herein describe the first reported case of pyogenic spondylitis and diskitis caused by Helicobacter cinaedi. The results of magnetic resonance imaging and the histology of biopsied tissue were suggestive of acute infection at the lumbar spine. The pathogen was obtained by a blood culture examination and identified by 16S rRNA analysis. Eight weeks of antibiotics therapy resulted in a good clinical course. H. cinaedi infections have been increasingly reported in recent years, but the pathogen's epidemiological and pathological characteristics are still unclear...
2015: Internal Medicine
Kenya Kamimura, Daisuke Kumaki, Masashi Arita, Yuji Kobayashi, Ken-Ichi Mizuno, Fumiko Kusama, Megumi Kobayashi, Hiroyuki Abe, Yoshifumi Takahashi, Kohei Ogawa, Yoko Shinagawa, Manabu Takeuchi, Yuichi Sato, Hirokazu Kawai, Satoshi Yamagiwa, Shuji Terai
Patients with liver cirrhosis are known to be immunocompromised hosts due to the dysfunction of the cellular and humoral immune systems, allowing easier bacterial translocation from the intestine to the systemic circulation via the portal vein. Sepsis can often be seen in these patients; however, approximately 10 % of patients show negative results with the standard culture period (3-4 days) and their pathogens remain undiagnosed. Here we report the first case of a patient with liver cirrhosis diagnosed with bacteremia due to Helicobacter cinaedi after gastrointestinal symptoms and review 62 cases of H...
October 2015: Clinical Journal of Gastroenterology
Noriko Miyake, Yong Chong, Ruriko Nishida, Yoji Nagasaki, Yasushi Kibe, Makiko Kiyosuke, Takeshi Shimomura, Nobuyuki Shimono, Shinji Shimoda, Koichi Akashi
In our hospital, positive blood culture rates of Helicobacter cinaedi dramatically increased after introducing the Bactec system. A simulated culture model of H. cinaedi bacteremia demonstrated no positive signals using the BacT/Alert system, despite efficient growth in bottles. Clinically suspected H. cinaedi bacteremia should be monitored more closely when using the BacT/Alert system, preferably with subcultivation after 7days of incubation.
November 2015: Diagnostic Microbiology and Infectious Disease
Kohei Mishima, Hideaki Obara, Kayoko Sugita, Masahiro Shinoda, Minoru Kitago, Yuta Abe, Taizo Hibi, Hiroshi Yagi, Kentaro Matsubara, Takehiko Mori, Yaoko Takano, Hiroshi Fujiwara, Osamu Itano, Naoki Hasegawa, Satoshi Iwata, Yuko Kitagawa
Helicobacter cinaedi (H. cinaedi), a Gram-negative spiral-shaped bacterium, is an enterohepatic non-Helicobacter pylori Helicobacter species. We report the first case of H. cinaedi bacteremia with cellulitis after liver transplantation. A 48-year-old male, who had been a dog breeder for 15 years, underwent ABO-incompatible living-donor liver transplantation for hepatitis C virus-induced decompensated cirrhosis using an anti-hepatitis B core antibody-positive graft. The patient was preoperatively administered rituximab and underwent plasma exchange twice to overcome blood type incompatibility...
July 7, 2015: World Journal of Gastroenterology: WJG
Avarzed Amgalanbaatar, Kouichi Hosoda, Hirofumi Shimomura
This study demonstrated that the cells of Helicobacter felis and Helicobacter cinaedi spontaneously absorb cholesterol added to the medium. A recent study by our group has revealed that phosphatidylethanolamine (PtdEtn) of Helicobacter pylori contains myristic acid as the most predominant saturated fatty acid and that the PtdEtn of this bacterium binds cholesterol more selectively than cholesteryl ester. We, therefore, isolated the PtdEtn from the two Helicobacter species to analyze the hydrophobic interaction between cholesterol and its glycerophospholipid...
August 2015: Lipids
Aisa Yoshizaki, Hiroshi Takegawa, Asako Doi, Yasushi Mizuno, Hiroaki Nishioka
Helicobacter cinaedi causes bacteremia, cellulitis, and gastroenteritis. We report the first case of vertebral osteomyelitis caused by H. cinaedi in an elderly man with low back pain and fever. The pathogen was detected in blood and lumbar disc, and the infection was successfully treated with oral doxycycline for 11 weeks.
September 2015: Journal of Clinical Microbiology
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"