Susumu Kokeguchi
Okayama University
GeneGel electrophoresisInternal medicineEndocrinologyAntigenMolecular biologyAntibodyPeptide sequenceChemistryImmunologyLipopolysaccharidePorphyromonas gingivalisPeriodontitisActinobacillusImmunoglobulin GAmino acidBacteriaBiochemistryMedicineBiologyMicrobiology
124Publications
27H-index
2,377Citations
Publications 124
Newest
#1Anthony C. May (RU: Rutgers University)H-Index: 1
#2Hiroshi Maeda (Osaka Dental University)H-Index: 15
Last. Carla Cugini (RU: Rutgers University)H-Index: 13
view all 12 authors...
ABSTRACT We report the draft genome sequence of Porphyromonas gingivalis strain 381 Okayama (381OKJP). The strain, obtained from the Socransky collection, has been used for experimentation since 1987. This sequence allows for comparisons to other sequenced 381 strains to observe acquisition of mutations and genome rearrangements in a commonly used laboratory strain.
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#1Akari Watanabe (University of Tokushima)H-Index: 2
#2Satoru Takaku (Saitama Prefectural University)H-Index: 2
Last. Susumu Kokeguchi (Okayama University)H-Index: 27
view all 6 authors...
: This study was to survey the capturing rate in Japanese dental clinics of the Lasioderma serricorne (cigarette beetles) , and to evaluate the beetle's potential as a carrier for transmission of nosocomial pathogens. L. serricorne imagoes were captured in pheromone traps in 14 Japanese dental clinics in August and September 2012 and 2013, and their numbers recorded. Polymerase chain reaction (PCR) for the bacterial antibiotic-resistant genes mecA, vanA, vanB, blaIMP, and blaVIM was performed on...
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#1Akari Watanabe (University of Tokushima)H-Index: 2
#2Naofumi Tamaki (University of Tokushima)H-Index: 25
Last. Susumu Kokeguchi (Okayama University)H-Index: 27
view all 5 authors...
Summary Aerosol and splatter produced during dental treatments (ultrasonic scaling and professional mechanical tooth cleaning) are potential sources of infection. Contamination patterns on the mask, goggles, chest and gowned right arm of operators, and on the goggles of patients before and after dental treatments were investigated using ATP bioluminescence analysis. Contamination on every surface tested increased significantly after dental treatment. Maximum contamination was found on the goggle...
20 CitationsSource
#1Junko Otsuki (Okayama University)H-Index: 9
#2Toshiro IwasakiH-Index: 2
Last. Masahide ShiotaniH-Index: 15
view all 8 authors...
Purpose In human oocytes, sERCs are one of the dysmorphic phenotypes that have been reported. Significantly reduced pregnancy rates and a comparatively higher number of abnormities in live births appear to be associated with the presence of sERCs in oocytes. However, some reports have shown that healthy babies can be born, without any reduced pregnancy rates, from oocytes observed to contain sERCs. Thus, the clinical and scientific significance of oocytes that harbor sERCs remains controversial.
8 CitationsSource
#1Norihiro SonoiH-Index: 3
#2Hiroshi Maeda (Osaka Dental University)H-Index: 15
Last. Shogo TakashibaH-Index: 37
view all 8 authors...
: An insertion sequence, IS1598 (IsPg4) has been found in virulent strains of Porphyromonas gingivalis in a murine abscess model. The present study was performed to investigate the effects of genetic rearrangements by IS1598 on the phenotypic characteristics of the virulent strains. For this purpose, we searched for a common insertion site of IS1598 among the virulent strains. Through cloning and database search, a common insertion site was identified beside an nrdD-like gene in the virulent FDC...
1 Citations
#1Anthony C. May (RU: Rutgers University)H-Index: 1
#2Hiroyuki Ohta (Ibaraki University)H-Index: 29
Last. Carla Cugini (RU: Rutgers University)H-Index: 13
view all 5 authors...
ABSTRACT We report the draft genome sequences of Aggregatibacter actinomycetemcomitans strains 310a (310-TR) and 310b (310-OS). Strain 310a is a clinical isolate with a rough phenotype. Strain 310b is a laboratory-adapted isolate derived from the passage of 310a and displays a smooth phenotype.
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#1Tsuji YH-Index: 1
#2Iwasaki TH-Index: 1
Last. Shiotani MH-Index: 1
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Abstract In the vitrification of embryos, dimethyl sulfoxide (DMSO) is one of the most effective cryoprotectant agents (CPAs), but cytotoxic effects of DMSO on embryos are well known. Carboxylated poly-L-lysine (CPLL) has been identified as an effective cryoprotectant of cultured cell lines and mammalian oocytes. To evaluate the efficacy and safety of CPLL as a CPA for developmental stage embryos. Mouse 8-cell embryos and blastocysts were vitrified with ethylene glycol (EG), DMSO/EG, or CPLL/EG ...
4 Citations
#1Akari Watanabe (University of Tokushima)H-Index: 2
#2Naofumi Tamaki (University of Tokushima)H-Index: 25
Last. Susumu Kokeguchi (Okayama University)H-Index: 27
view all 5 authors...
Summary Bacterial contamination of dental unit waterlines (DUWLs) was evaluated using ATP bioluminescence analysis and a conventional culture method. Water samples ( N =44) from DUWLs were investigated for heterotrophic bacteria by culture on R2A agar, which gave counts ranging from 1.4×10 3 to 2.7×10 5 cfu/mL. The ATP bioluminescence results for DUWL samples ranged from 6 to 1189 relative light units and could be obtained within 1min; these correlated well with the culture results ( r =0.727–0....
5 CitationsSource
#1Akari Watanabe (University of Tokushima)H-Index: 2
#2Naofumi Tamaki (University of Tokushima)H-Index: 25
Last. Susumu KokeguchiH-Index: 27
view all 4 authors...
Bacterial contamination in dental unit waterlines (DUWLs) was evaluated by molecular techniques in addition to the conventional culture method. Water samples (n=8) from DUWLs were investigated for heterotrophic bacteria by culture method using R2A agar. The selected bacterial antibiotic-resistance genes and Legionella species-specific 16SrDNA were identified by PCR. The profiles of bacterial contamination in DUWLs were further identified by PCR-DGGE. In this study, no antibiotic-resistant or Leg...
1 Citations
#1Naofumi Tamaki (University of Tokushima)H-Index: 25
#2Fumihiko YoshinoH-Index: 22
Last. Toshiyuki Saito (Nagasaki University)H-Index: 25
view all 16 authors...
Aim Antioxidant activities and cytokine levels in human body fluids are considered to be strongly associated with periodontitis. The aim of this study was to elucidate the relationship between salivary antioxidant activities against superoxide or hydroxyl radical, cytokines, and periodontal conditions through a community-based cross-sectional study conducted in Goto city, Japan. Materials and Methods Saliva samples were analysed for superoxide or hydroxyl radical scavenging activities and cytoki...
8 CitationsSource