• Title, Summary, Keyword: Passive Immunization

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Clinical and microbiological effects of egg yolk antibody against Porphyromonas gingivalis as an adjunct in the treatment of moderate to severe chronic periodontitis: a randomized placebo-controlled clinical trial

  • Xu, Yan;Selerio-Poely, Tshepiso;Ye, Xingru
    • Journal of Periodontal and Implant Science
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    • v.48 no.1
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    • pp.47-59
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    • 2018
  • Purpose: To evaluate the clinical and microbiological effects of the local use of egg yolk immunoglobulin against Porphyromonas gingivalis (anti-P.g. IgY) as an adjunct to scaling and root planing (SRP) in the treatment of moderate to severe chronic periodontitis. Methods: This was a randomized, placebo-controlled, double-blind trial involving 60 systematically healthy patients with moderate to severe chronic periodontitis. Subjects (n=20/group) were randomly assigned to receive SRP combined with subgingival irrigation of anti-P.g. IgY and anti-P.g. IgY mouthwash, subgingival irrigation of 0.2% chlorhexidine and 0.2% chlorhexidine mouthwash, or subgingival irrigation of placebo and placebo mouthwash for 4 weeks. Probing pocket depth, clinical attachment level, bleeding on probing, and the plaque index were evaluated at baseline and at 4 weeks. Subgingival plaque, gingival crevicular fluid, and saliva were simultaneously collected for microbiological analysis. Results: Our results showed that anti-P.g. IgY mouthwash was as effective as chlorhexidine at improving clinical parameters over a 4-week period. All the groups showed a significant reduction in levels of P.g. at 4 weeks. No significant difference was observed in the test group when compared to placebo regarding the reduction in the levels of P.g. Anti-P.g. IgY significantly suppressed the numbers of red complex bacteria (RCB) in subgingival plaque and saliva in comparison with placebo. No adverse effects were reported in any of the subjects. Conclusions: Within the limitations of the study, the present investigation showed that passive immunization with anti-P.g. IgY may prove to be effective in the treatment of chronic periodontitis due to its ability to improve clinical parameters and to reduce RCB. No significant differences were found between the anti-P.g. IgY and placebo groups in the reduction of P.g.

Passive Immunization Approach to Reduce Body Fat in Pigs Using Fat-specific Polyclonal Antiserum

  • Baek, Kyung Hoon;Choi, Chang Weon;Choi, Chang Bon;Lee, Byong Seak
    • Asian-Australasian Journal of Animal Sciences
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    • v.20 no.10
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    • pp.1594-1599
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    • 2007
  • Plasma membrane proteins from pig adipocytes, brain, heart, kidney, liver and spleen were isolated using a 32% sucrose gradient. An adult male sheep was immunized three times at 3-wk intervals with the purified pig adipocyte plasma membrane (APM) proteins. Blood samples were taken from the immunized sheep 12 d after the third immunization. Antiserum showed strong reactivity with APM proteins determined by ELISA, and the reactivity could be detected at dilutions in excess of 1:128,000. Antiserum showed very low binding affinity with proteins isolated from brain, heart, kidney, liver or spleen. Ninety weanling pigs were allocated randomly to three treatment groups and were injected i.p. with 40 ml of antiserum (n = 30) or 20 ml of lyophilized antiserum (21.5 mg/ml; n = 30). A control group (n = 30) received 40 ml of saline, and all pigs were slaughtered at 24 wk of age. The polyclonal antiserum did not change BW or ADG. Carcass percentage of pigs was numerically increased by the antiserum treatment compared with control. Both antiserum treatments did not significantly (p>0.05) affect body composition, including body fat content, relative to the control group.

Failure of immunization with Naegleriu fowleyi in mice born to immune mothers (Naegleria fowleri로 면역된 어미에서 태어난 마우스의 방어면역 결여)

  • 임경일;이근태
    • The Korean Journal of Parasitology
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    • v.23 no.1
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    • pp.151-155
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    • 1985
  • Female BALB/c mice weighing 18~20g were immunized by three injections of $1{\times}10^6$ Naegleria iowleri trophozoites intraperitoneally at the interval of one week 6 times for the pregnant mice and 3 times for the offspring mice. One week after immunization the mice were challenged intranasally with N. fcwleri trophozoites $5{\times}10^4$ under secobarbital anesthesia. Experimental primary amoebic meningoencephalitis developed between day 7 and 16 after infection. All mice were dead due to amoebic meningoencephalitis in all experimental groups except in the offspring born to non-immune mothers. Mean of survival time, which is the duration of survival of mice from infection to death, was delayed in the groups of mice born to immune mothers, immune mice born to immune mothers. Active or passive protective immunity against N. fowleri infection was demonstrated in the ismunized mice and mice born to immune mothers. But the effectiveness of immunization was greatly impaired in terms of mortality in the immune mice born to immune mothers when N. fowulsri was infected intranasally.

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Preparation of a Vibrio vulnificus Vaccine with Immunogenicity and Protective Efficacy

  • Lee, Na-Gyong;Jung, Sang-Bo;Ahn, Bo-Young;Kim, Young-Gi;Kim, Je-Hak;Lee, Youn-Ha;Park, Wan-Je;Kim, Hyun-Su
    • Journal of Microbiology and Biotechnology
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    • v.7 no.6
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    • pp.423-428
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    • 1997
  • Vibrio vulnificus is a halophilic gram-negative human pathogen, which affects people with underlying liver diseases or a suppressed immune system, often leading to primary septicemia with a mortality rate of higher than 60%. In an effort to develop an oral vaccine against V. vulnificus infection, we prepared a whole cell killed vaccine of V. vulnificus on a large scale and compared the immunogenicity and protective efficacy of the vaccine administered in three formulation forms in rabbits. Since V. vulnificus O-antigen serotypes 1, 2, 3, 4, 5, and 7 account for more than 95% of clinical isolates, we prepared cell lysates from these six serotype strains and mixed in equal amounts for a vaccine. The vaccine was administered to rabbits intramuscularly (i.m.), orally as granules or as enteric-coated granules. In rabbits, all three formulation forms elicited a high level of serum IgG antibody reactive not only to the six strains but also to other O-antigen serotypes 6, 8 and 9, indicating cross-reactivities among the strains. Immunotherapeutic efficacy of the antisera was also evaluated by a passive immunization assay, which revealed that the orally immunized antisera as well as the i.m. immunized antisera was protective against a subsequent lethal challenge of V. vulnificus. These data demonstrate that oral immunization with a V. vulnificus whole cell lysate vaccine induced a systemic immune response and suggest the feasibility of development of this vaccine preparation as an oral vaccine.

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INFLUENCE OF ENDOGENOUS SOMATOSTATIN ON LACTATION IN RATS

  • Sun, S.S.;Myung, K.H.;Spencer, G.S.G.
    • Asian-Australasian Journal of Animal Sciences
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    • v.9 no.3
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    • pp.337-340
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    • 1996
  • The role of endogenous somatostatin on lactation in rats was examined by passive immuno-neutralization of Wistar rats. In one study, the rats were given either immunoglobulin raised in sheep against somatostatin, or non-specific sheep immunoglobulins by daily s.c. injection from parturition through the first two weeks of lactation. The growth of the pups was recorded by weighting every second day, and the milk yield calculated from the pup weight and weight gain. Immunoneutralization of maternal somatostatin during pregnancy had a slight effect (p < 0.05) on the mean birth weight of the pups but no subsequent effect on postnatal growth rate of the pups or milk yield ($25.32{\pm}0.88g/day$) compared with young control rats given normal sheep serum ($25.55{\pm}1.04g/day$). Similarly, passive immunization against somatostatin during lactation ($21.96{\pm}1.57g/day$) also did not affect milk yields compared with controls ($24.85{\pm}1.03g/day$). These data do not support a significant role for endogenous somatostatin in regulating milk production in lactating rats.

A Study of on the Optimal Vaccinaton using Pontryagin's Minimum Principle (Pontryagin 최소 원리를 이용한 최적접종에 관한 연구)

  • Jeong, Hyeong-Hwan;Ju, Su-Won;Lee, Gwang-U
    • Journal of Biomedical Engineering Research
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    • v.9 no.1
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    • pp.11-16
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    • 1988
  • The optimum control theory has been applied to the problem of finding the most economic use of active and passive immunization controls. Application of Pontryagin's Minimum Principle to this case, involving functions of delayed control has been demonstrated and a procedure has been developed for the numerical solution of the resulting control problem. Using the numerical procedure, optimum control strategies have been obtained for different values of reported case cost.

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Antifertility Effect of Passive Immunization against Progesterone Monoclonal Antibody in Mice (Progesterone 단일클론항체의 수동면역이 Mouse 수정란의 착상저해에 미치는 효과)

  • 김정우;김종배;정길생;고대환
    • Korean Journal of Animal Reproduction
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    • v.14 no.3
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    • pp.157-164
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    • 1990
  • Anti-progesterone monoclonal antibody injected intraperitonially as a single dose(100$\mu\textrm{g}$) 48hours post coitum(p.c.) almostly blocked pregnancy in ICR mice. The blocking rate of pregnancy in mice treated with antibody were decreased proportionally according to dose of antibody injected ; the rate were 60%, 57% and 17% as the antibody of 10$\mu\textrm{g}$, 50$\mu\textrm{g}$ and 100$\mu\textrm{g}$ were injected respectively. Blood serum progesterone concentration was greatly increased(21 times) after treatment(100$\mu\textrm{g}$), by virtue of high-affinity binding by antibody in circulation of non-pregnant mice in coompared with that of control group at day 10 p.c.. The concentration was about 1.6 times higher in the pregnant mice than in the non-pregnant mice in antibody treated group. In control group, the progesterone concentration was over 7 times higher in the pregnant mice than in non-pregnant mice at day 5 p.c..

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Protective effect of chicken egg yolk antibody in colostrum-deprived neonatal puppies (초유결핍 신생자견에서 난황 항체의 방어효과)

  • Oh, Tae-ho;Han, Hong-ryul
    • Korean Journal of Veterinary Research
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    • v.36 no.4
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    • pp.903-913
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    • 1996
  • 총 15두의 초유를 섭취하지 않은 신생자견을 대상으로 난황항체를 경구투여한 후 개 파보바이러스를 경구 접종하여 실험감염을 유발시켜 난황항체의 수동 면역에 의한 예방효과를 알아보고자 한다. 항체역가는 면역화된 산란계로부터 분리한 난황항체를 투여한 자견이 비면역 난황항체를 투여한 자견에 비해 높았다. 개 파보바이러스 접종 직전의 항체역가는 대조군의 경우 1:40에서 1:80, 실험군의 경우는 1:320에서 1:1280이었다. 모든 대조군의 자견들은 바이러스 접종후 4일에 임상증상을 나타내었고 총 7두중 6두가 폐사된 반면 실험군 자견은 2두만이 증상을 나타내었고 폐사 자견은 없었다(p<0.01). 개 파보바이러스를 경구 접종한 후 전체 자견의 혈구응집억제반응역가는 접종후 6일까지 감소하는 경향을 보였다. 접종후 5일의 분변내 혈구 응집반응역가는 실험군 자견의 경우 < 2에서 64였으며 대조자견은 216에서 2048로 높았다.

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Effect of Sheep and Chicken Antibodies to Rat Adipocytes Plasma Membranes on Rat Carcass Fat

  • Wang, Jundong;Zhang, Jianfeng;Li, Junping;Hao, Junhu;Wang, Shaolin;Zhang, Jianhai
    • Asian-Australasian Journal of Animal Sciences
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    • v.17 no.8
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    • pp.1177-1182
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    • 2004
  • Polyclonal anti-sera were collected from sheep and chicken immunized with adipocytes plasma membranes. Thirty two male wistar rats, weighing 185-215 grams, were divided randomly into 4 groups (trial 1: control group and treat group, trial 2: control group and treat group), with 8 rats in each group. The experiment lasted for 7 weeks. Trial one: The control group received four consecutive daily intraperitoneal injections of 1ml of sheep normal sera. The same 4 day daily dose of group sheep anti-rats sera adipocyte plasma membrane anti-sera was administered to the treat group. The results showed that the treatment for treat group increased body weight by 6.35% (p<0.05) and food intake by 6.85%, and improved food conversion efficiency (Food intake/gain) by 45.00% (p<0.05). Periernal, epididymal and omental adipose deposit weights were decreased by 23.92% (p<0.05), 34.45% (p<0.05) and 0.98% respectively, while total fat content decreased by 20.92%. Trial two: The control group received four consecutive daily intraperitoneal injections of 1 ml of chicken normal sera, the results of injections of chicken anti-rats sera adipocyte plasma membrane antis-era administered to the treat group indicated that chicken anti-rats adipocyte plasma membranes immunization had an disadvantageous effect on the growth of the wistar rats by the end of 7th wk, compared with the control group. The immunized group decreased in total weight by 40 gram (p<0.05) an averagely and in food intake noticeably (p<0.01). The deposition of fat and the rates of TG and FFA in serum had no statistical significance.

INHIBITORY EFFECT OF CRUDE IgY ON ACID PRODUCTION AND ENAMEL DEMINERALIZATION BY STREPTOCOCCUS MUTANS (Streptococcus mutans의 산 생성과 법랑질 탈회에 대한 조난황항체(IgY)의 억제 효과)

  • Oh, Se-Yeong;Lee, Kwang-Hee;Kim, Dae-Eup
    • THE JOURNAL OF THE KOREAN ACADEMY OF PEDTATRIC DENTISTRY
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    • v.29 no.1
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    • pp.76-83
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    • 2002
  • The purpose of study was to determine the effectiveness of crude IgY to S. mutans in preventing the acid production and the demineralization of primary tooth enamel in vitro. The acid production by S. mutans in Todd Hewitt broth with and without 5% sucrose was inhibited by 2.5% crude IgY, and as the concentration of crude IgY increased from 2.5% to 17.5%, the pH drop of the media after incubation continued to decrease. There were high positive correlations between the concentration of crude IgY and the pH of media in the late incubation period. The inhibition rate of demineralization of primary tooth enamel by S. mutans was determined by measuring the surface microhardness after incubation in 5% sucrose Todd Hewitt broth for 12 hours. The inhibition rate was 32.28% in 2.5% IgY, 42.28% in 7.5% IgY, 64.06% in 12.5% IgY, and 92.79% in 17.5% IgY. There was high positive correlation between the concentration of crude IgY and the surface microhardness of enamel after demineralization These results suggest that it would be possible to prevent dental caries through passive immunization using crude IgY.

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