• Title, Summary, Keyword: biotype

Search Result 141, Processing Time 0.069 seconds

Relationship between Gingival Biotype and Underlying Crestal Bone Morphology

  • Lee, Kwang Ho;Jung, Koo Young;Jung, Jae-Suk
    • Journal of Korean Dental Science
    • /
    • v.9 no.2
    • /
    • pp.49-54
    • /
    • 2016
  • Purpose: The purpose of this study was to assess the relationship between gingival biotype and underlying crestal bone morphology in the maxillary anterior region. Materials and Methods: The maxillary anterior teeth from 40 subjects (20 thin biotype, 20 thick biotype) with ages from 20 to 50 years were included in this study. All subjects had healthy gingiva in the maxillary anterior region and had no history of orthodontic treatment, periodontal treatment, or hyperplastic medication. Using the probe transparency method, the scalloped distance (SCD) between the contact point-bone crest and the midface-bone crest was measured for each maxillary anterior teeth of two groups. Result: The mean SCD was $3.00{\pm}0.21mm$ in thin biotype and $2.81{\pm}0.20mm$ in thick biotype. The SCD value in the thin biotype was statistically significantly greater than in the thick biotype (t=2.982, P<0.01). Comparing the degree of crestal bone scallop in each maxillary anterior teeth in the two groups, all six teeth in the thin biotype showed higher bone scallop than in the thick biotype. Conclusion: A simple procedure using a probe could to determine gingival biotype and to predict the underlying crestal bone morphology was introduced. This may be useful for effective treatment planning.

Comparison of insecticide susceptibility and enzyme activities of biotype B and Q of Bemisia tabaci (담배가루이 Biotype B와 Q의 약제감수성과 효소활성 비교)

  • Kim, Eun-Hee;Sung, Jae-Wook;Yang, Jeong-Oh;Ahn, Hee-Geun;Yoon, Chang-Mann;Seo, Mi-Ja;Kim, Gil-Hah
    • The Korean Journal of Pesticide Science
    • /
    • v.11 no.4
    • /
    • pp.320-330
    • /
    • 2007
  • Mitochondrial 16S DNA sequences of Bemisia tabaci which were collected on rose greenhouse of Iwol and Jinchen in Chungbuk and red pepper field of Miryang, Gyeongnam, were analyzed. The mtCOI PCR product of B. tabaci collected on red pepper field of Miryang were digested with EcoT14I (Sty I) into two fragments 555bp and 311bp, while the PCR product of B. tabaci collected on rose greenhouse of Iwol were digested with Sty I into two fragments of 560bp and 306bp. As a result, B. tabaci collected on red pepper reveal biotype Q and those on rose greenhouse was biotype B. These was difference between two biotypes in insecticide susceptibility, and the biotype B was more susceptible than biotype Q. As a result of foliar systemic test, root-uptake systemic test and residual effect, the biotype B was more susceptible. In case of inhibition effect on enzyme activities of fenitrothion (organophosphorous) and fenothiocarb (carbamate), those of biotype Q was higher than those of biotype B. These results indicate that biotype Q was more resistant than biotype B against 12 insecticides.

Biochemical Properities, Isolation & Identification of the Propionibacterium acnes Picked from Acne Lesion (여드름병변에서 채취한 Propionibacterium acnes의 분리, 동정 및 생화학적 특성 연구)

  • Lee, Kyung-Suk;Choi, Jeung-Sook
    • Fashion & Textile Research Journal
    • /
    • v.8 no.5
    • /
    • pp.571-576
    • /
    • 2006
  • Thirty P. acnes were isolated from the 30 acne patients who visited some skin care shops from Feburary of 2001 to August of 2001. They were identified by morphological features (gram stain), biochemical properties. Only P. acne strains are isolated among Propionibacteria sp. and biochemical properities of P. acnes were not different from P. acnes ATCC 11827 strain significantly. The results of the biotyping was as follow: twenty three strains of biotype I from comedone, 1 strain of biotype II from pauple, 5 strains of biotype III from pauple and pustule, and 1 strain of biotype IV from pauple were isolated respectively.

Comparison of Feeding Behavior of B and Q biotypes of Bemisia tabaci (Hemiptera: Aleyrodidae) against Red Pepper and Tomato Varieties (고추와 토마토 품종별 담배가루이 B와 Q biotype의 섭식행동 비교)

  • Yang, Jeong-Oh;Kim, Eun-Hee;Yoon, Chang-Mann;Ahn, Ki-Su;Kim, Gil-Hah
    • Korean journal of applied entomology
    • /
    • v.48 no.2
    • /
    • pp.179-188
    • /
    • 2009
  • Nymphal development of the B and Q biotypes of Bemisia tabaci was normal on all seven tomato varieties tested. However, their nymphal development was different on red pepper varieties. B biotype was not normally developed on nine red pepper varieties tested. On the contrary, Q biotype was normally developed, but its adult emergence rate was very low in Nokkwang variety than in other eight varieties. The EPG analysis of the feeding behavior of Bemisia tabaci showed that B and Q biotypes had different duration of phloem phases on red pepper. Q biotype showed longer phloem phases than B biotype. On Nokkwang variety, Q biotype had short phloem phases and did not prefer to feed on Nokkwang variety. Interestingly, Q biotype was found to have long duration of phloem phases on eight red pepper varieties, but B biotype did not prefer to feed on red pepper varieties. However, both biotypes did not show any difference in feeding time on tomato varieties.

Biotypes and Serotypes of Thermophilic Campylobacter spp. Isolated from Animals (동물로부터 분리한 Thermophilic Campylobacter의 Biotype 및 Serotype)

  • Kim, Yong-hwan;Mah, Jum-sul;Kang, Ho-jo;Cha, In-ho
    • Korean Journal of Veterinary Research
    • /
    • v.27 no.2
    • /
    • pp.245-251
    • /
    • 1987
  • A total of 145 strains of thermophilic Campylobacter spp. isolated from the fecal specimens of 108 cattle, 120 pigs and 104 chickens. The isolation rates of Campylobacter jejuni from cattle, pigs and chickens were 36.1%, 38.3% and 28.8%, respectively. In the biotyping of 115 strains of C. jejuni, 49.6% were belonged to biotype I, 33.9% biotype II, 10.4% biotype IV and 6.1 % biotype III. Twenty-eight strains of C. coli were 78.6% of biotype I, 21.4% biotype II. Two strains of C. laridis belonged to biotype I and II. One hundred of 105 C. jejuni cultures were typable serologically and represented 13 serogroups Serotype 4, 5, 26, 27 and 36 were encountered most frequently. Eighteen of 23 C. coli cultures were typable serologically and represented 6 serogroups. Serotype 8, 20, 21 and 31 were encountered most frequently. In the comparison of frequency of serotype between animal species, serotypes 4, 30, 5, 26 and 27 were encountered relatively common in the cattle source isolates, serotypes 26 and 36 in the pigs, and 36 and 17 in the chickens. The serotypes of C. coli encountered most frequently were serotype 8 and 31.

  • PDF

Biotype, serotype and antibiotic susceptibility of Yersinia enterocolitica isolated from swine (돼지에서 분리한 Yersinia enterocolitica의 생물형, 혈청형 및 항균제 감수성)

  • Park, Seog-gee;Choi, Chul-soon;Jeon, Yun-seong
    • Korean Journal of Veterinary Research
    • /
    • v.32 no.1
    • /
    • pp.63-76
    • /
    • 1992
  • A study on the isolation of Yersinia from the feces of healthy pigs and the biotype and serotype and susceptibility to 16 antimicrobials was carried. Out of 853 pigs, Yersiniae were isolated from 349 pigs(40.9%). Of 349 isolates, 289 isolates(82.8%) were Yersinia enterocolitica and 54(15.5%) were Y kristensenii, 3(0.9%) were Y pesudotuberculosis and the rest 3(0.9%) were Y prederiksenii. Out of 289 isolates of Y enterocolitica, the predominants biotype was 3B comprising of 165 isolates(57.1%) and followed by biotype 2, comprising of 49 isolates(17.0%), bioptype 3A, comprising of 41 isolates(14.2%) and biotype 4 comprising of 23 isolates(8.0%). And the predominant serotype was 0 : 3 comprising of 231 isolates(79.9%) and followed by serotype 0 : 9 comprising of 42 isolates(14.5%) and 0 : 21 comprising of 10 isolates(3.5%). Y. enterocolitica were resistant to cephalothin(99%), novobiocin(99%), erythromycine(83%), ampicillin(83%) and carbenicillin(81%) and susceptible to amikacin(100%), colistin(100%), gentamicin(100%), kanamycin(100%), polymyxin B(100%), tobramycin(100%), chloramphenicol(99%), nalidixic acid(99%), neomycin(99%), streptomycin(99%) and tetracycline(99%). Most strains of biotype 2/serotype 0 : 9 were susceptible to carbenicillin(100%) and ampicillin(61%) but the other biotype/serotypes were resistant to these antibiotic.

  • PDF

CTX Prophages in Vibrio cholerae O1 Strains

  • Kim, Eun Jin;Lee, Dokyung;Moon, Se Hoon;Lee, Chan Hee;Kim, Dong Wook
    • Journal of Microbiology and Biotechnology
    • /
    • v.24 no.6
    • /
    • pp.725-731
    • /
    • 2014
  • The classical biotype strains of the Vibrio cholerae O1 serogroup harbor the biotype-specific cholera-toxin encoding phage (CTX) $CTX^{cla}$, and the El Tor biotype strains contain CTX-1. Although the classical biotype strains have become extinct, a remnant of classical CTX phage is transferred to the El Tor biotype strains. The prototype El Tor strains, which produce the biotype-specific cholera toxin, are now being replaced by atypical El Tor variant strains producing classical biotype cholera toxin. The genome sequences of the CTX phages in atypical El Tor strains indicate that the CTX phages in atypical El Tor strains are a mosaic of $CTX^{cla}$ and CTX-1. Before the emergence of atypical El Tor stains in the early 1990s, unusual pre-seventh pandemic strains were isolated in the US Gulf Coast between 1973 and 1986. These strains have characteristics of atypical El Tor strains since they are El Tor biotype strains containing $CTX^{cla}$, yet the genome sequence of this CTX phage indicates that it is different from $CTX^{cla}$ and is therefore classified separately as $CTX^{US\;Gulf}$.

Inheritance of Adult Emergence in Artficially Induced Biotypes of Brown Planthopper (Nilaparvata lugens STAL) on the Resistant Rice Varieties (인위적 유발 벼멸구 생태형에 있어서 우화율 형질의 유전)

  • Lee Young-Man;Lee Hyung-Rae;Yi Bu-Young;Choi Seung-Yoon;Sim Jae-Wook;Ro Choon-Jeohng
    • Korean journal of applied entomology
    • /
    • v.20 no.1
    • /
    • pp.15-20
    • /
    • 1981
  • To analyze the inheritance of emergence rate of brown plant hopper (Nilaparvata lugens) biotypes, six crosses among biotype 1, biotype 2 induced by rearing on Mudgo and biotype 3 these on ASD 7, were made. Each generation $(P_1,\;P_2,\;F_l\; F_2,\;BC_1,\;BC_2)$ of each cross was fed on the rice seedlings of Mudgo and ASD 7 varieties. The emergence rate of biotpe 2 on Mudgo was controlled by the one incomplete dominant gene in $biotype\;l{\times}biotype$ 2 coross, however, that of biotype 3 on ASD 7 was controlled by one incomplete recessive gene in $biotype\;l{\times}biotype$ 3 cross. The genes involved in biotype 2 and biotype 3 were not identical, however, their allelic relations are not clear.

  • PDF

Differentiation in Feeding Behaviour of Biotypes B and Q of Bemisia tabaci (Homoptera: Aleyrodidae) against Three Insecticides (3종의 살충제에 대한 담배가루이 Biotype B와 Q의 섭식행동 비교)

  • Seo, Mi-Ja;Yang, Jeong-Oh;Yoon, Chang-Mann;Youn, Young-Nam;Kim, Gil-Hah
    • Korean journal of applied entomology
    • /
    • v.46 no.3
    • /
    • pp.401-408
    • /
    • 2007
  • The feeding behaviors of 2 biotypes (type B and Q) of tobacco whitefly, Bemisia tobaci, were monitored using EPG technique on tomato and pepper plants treated 3 insecticides for controlling whiteflies, for examples, acetamiprid, spinosad and thiamethoxam. After treatment of three insecticides with recommended concentrations to tomato and pepper plants, EPG waveforms were recorded during 6 hours. The characteristic patterns of feeding behaviors investigated were as follows; time consumed by withdrawal of proboscis, total non-penetration time, total stylet pathway pattern time and total phloem feeding time. There was somewhat difference among 3 insecticides tested. As a result of investigation of total duration showed the stylet pathway activity due to the reaction against all tested insecticides, the Q biotype showed fewer time than those from the B biotype. The B biotype showed more frequent stylet pathway activity patterns during whole recording time and a shorter phloem ingestion time than those from the Q biotype. In result of prior up (non-penetration) time representing the reaction against the insecticide treated, the time of B biotype was more faster than that of the Q biotype, so it was considered that the B biotype was more sensitive to the tested insecticides. Therefore, our results revealed a clear difference in feeding behaviour between the B and Q biotypes of B. tabaci. Also, it was investigated that B biotype was susceptible to the 3 insecticides.

Prevalence of Campylobacter jujuni in Broilers and Chicken Processing Plants (육계 및 도계장에서의 Campyobacter jejuni의 오염에 관한 연구)

  • 오정선;신광순;윤용덕;박정문
    • Journal of Food Hygiene and Safety
    • /
    • v.3 no.1
    • /
    • pp.27-36
    • /
    • 1988
  • Generally, carrier chickens contaminate the processing plant equipment to such an extent that negative chickens procell afterwards result in contaminated. meat. This study was performed to investigate the prevalence of Complliobacter jejuni in two chicken procelling plants. Altogether two hundred samples were collected from cloaca, carcasses, chilling water, and evis-cerationknives at different processing stages during the period of June to September 1987. The isolated organisms were tested for distribution of biotype, serotype. The results obtained were summarized as follows: 1. C. jejuni was isolated from 41(34.2%) of 120 chicken feces, 9(45.0%) of 20 carC888eS before chilling, 11(55.0%) of 20 carcasses after chilling, 12(60.0%) of 20 eviscerationlmives. The evilceration knives and chilling water were considered as major means of croll contamination. 2. In biotyping 82 isolates of C. jejuni, 64(78.1%) were cl888ified as biotype I, and 18(21.9%) belonged to biotype II. 3. In serotyping 82 isolates of C. jejuni, 64(78.1%) were identified as serotype LIO 37, and 18(21.9%) were untypable.

  • PDF