3.Therapeutic DNA vaccines against tuberculosis: a promising but arduous task.
Chinese Medical Journal 2006;119(13):1103-1107
OBJECTIVETo review recent developments in therapeutic DNA vaccines against tuberculosis.
DATA SOURCESThe data used in this review were obtained mainly from the studies of therapeutic DNA vaccines against tuberculosis reported from 2000 to 2006.
STUDY SELECTIONRelevant articles about studies of therapeutic DNA vaccines against tuberculosis were selected.
DATA EXTRACTIONData were mainly extracted from the 32 articles listed in the reference section of this review.
RESULTSSome DNA vaccines which previously showed to induce protective immunity against infection by Mycobacterium tuberculosis in a prophylactic manner are also surprisingly effective when used therapeutically, including persistent Mycobacterium tuberculosis and multidrug-resistant tuberculosis which are refractory to immune system and antibacterial chemotherapy alone. When used in combination with antibacterial drugs, therapeutic DNA vaccines could effectively eliminate residual bacteria in infected animals and shorten the therapy course of conventional chemotherapy. Detailed studies demonstrated that therapeutic effects of DNA vaccines may at least partly be due to the restoration of the Th(1)/Th(2) balance. Some problems have also emerged along with these exciting results.
CONCLUSIONSTherapeutic DNA vaccine is a promising strategy against tuberculosis, however developing an ideal DNA vaccine for therapy of tuberculosis will require further development.
Humans ; Tuberculosis ; therapy ; Tuberculosis Vaccines ; therapeutic use ; Vaccines, DNA ; therapeutic use
4.Current status of vaccination services for adults in urban and rural areas of nine provinces in China from 2019 to 2021.
Ru Yue HU ; Li Jun LIU ; Xi Xi ZHANG ; Qi Min ZENG ; Chang Sha XU ; Jia Kai YE ; Lei CAO ; Li LI ; Yi Fan SONG ; Zhao Nan ZHANG ; Wen Zhou YU
Chinese Journal of Preventive Medicine 2023;57(12):2050-2055
Objective: To understand the current situation of vaccination services for adults in China, explore how to establish a stable and efficient vaccination service system for adults, and provide reference for formulating corresponding policies. Methods: The vaccination information systems of nine provinces in China were used to obtain information on urban and rural vaccination of influenza vaccine, 23-valent pneumococcal polysaccharide vaccine (PPV23), and human papillomavirus vaccine (HPV) from 2019 to 2021. The indicator, vaccination rate/full vaccination rate, was used for statistical description. Results: The vaccination rate/full vaccination rate of the three vaccines in eastern China was generally higher than that in central and western China. The vaccination rate/full vaccination rate in urban areas was generally higher than that in rural areas. From 2019 to 2021, the vaccination rates of influenza vaccine among people aged 60 years and above in urban and rural areas were 2.96%, 6.29%, 6.14% and 1.29%, 2.58%, 2.94%, respectively. The vaccination rates of the PPV23 among people aged 60 years and above in urban and rural areas increased year by year, with rates of 0.38%, 1.05%, 1.15% and 0.14%, 0.49%, 0.59%, respectively. From 2019 to 2021, the HPV coverage of female adults aged 27-45 years in urban and rural areas increased year by year, with rates of 0.46%, 0.93%, 1.88% and 0.17%, 0.40%, 1.08%, respectively. Conclusion: The vaccination rates of influenza vaccine,PPV23 vaccine and HPV vaccine for adults in China are relatively low, with higher rates in the eastern region than in the central and western regions, and higher rates in urban areas than in rural areas. It is recommended to formulate corresponding health and economic policies and explore a suitable vaccination service system for adults in China to improve vaccination rates.
Adult
;
Female
;
Humans
;
Influenza Vaccines/therapeutic use*
;
Papillomavirus Infections
;
Vaccination
;
China
;
Papillomavirus Vaccines/therapeutic use*
5.Current status of vaccination services for adults in urban and rural areas of nine provinces in China from 2019 to 2021.
Ru Yue HU ; Li Jun LIU ; Xi Xi ZHANG ; Qi Min ZENG ; Chang Sha XU ; Jia Kai YE ; Lei CAO ; Li LI ; Yi Fan SONG ; Zhao Nan ZHANG ; Wen Zhou YU
Chinese Journal of Preventive Medicine 2023;57(12):2050-2055
Objective: To understand the current situation of vaccination services for adults in China, explore how to establish a stable and efficient vaccination service system for adults, and provide reference for formulating corresponding policies. Methods: The vaccination information systems of nine provinces in China were used to obtain information on urban and rural vaccination of influenza vaccine, 23-valent pneumococcal polysaccharide vaccine (PPV23), and human papillomavirus vaccine (HPV) from 2019 to 2021. The indicator, vaccination rate/full vaccination rate, was used for statistical description. Results: The vaccination rate/full vaccination rate of the three vaccines in eastern China was generally higher than that in central and western China. The vaccination rate/full vaccination rate in urban areas was generally higher than that in rural areas. From 2019 to 2021, the vaccination rates of influenza vaccine among people aged 60 years and above in urban and rural areas were 2.96%, 6.29%, 6.14% and 1.29%, 2.58%, 2.94%, respectively. The vaccination rates of the PPV23 among people aged 60 years and above in urban and rural areas increased year by year, with rates of 0.38%, 1.05%, 1.15% and 0.14%, 0.49%, 0.59%, respectively. From 2019 to 2021, the HPV coverage of female adults aged 27-45 years in urban and rural areas increased year by year, with rates of 0.46%, 0.93%, 1.88% and 0.17%, 0.40%, 1.08%, respectively. Conclusion: The vaccination rates of influenza vaccine,PPV23 vaccine and HPV vaccine for adults in China are relatively low, with higher rates in the eastern region than in the central and western regions, and higher rates in urban areas than in rural areas. It is recommended to formulate corresponding health and economic policies and explore a suitable vaccination service system for adults in China to improve vaccination rates.
Adult
;
Female
;
Humans
;
Influenza Vaccines/therapeutic use*
;
Papillomavirus Infections
;
Vaccination
;
China
;
Papillomavirus Vaccines/therapeutic use*
6. Immunization: dramatic new evidence
Papua New Guinea medical journal 2000;43(1-2):24-29
The current EPI (Expanded Programme on Immunization) vaccines do not specifically target the organisms that lead to the two main causes of death in children - pneumonia and diarrhoea. This implies that the EPI vaccines will have only a modest effect on total child mortality. However, recent evidence suggests that measles and BCG vaccines dramatically reduce child mortality through nonspecific effects - that is, they reduce mortality from many causes, not just measles and tuberculosis. The combination of BCG at birth and measles vaccine at 6 months probably reduces total mortality to about one-third of its previous level. This means that immunization must now have the very highest priority. If we could improve immunization in Papua New Guinea so that all children received BCG, measles, diphtheria-pertussis-tetanus and polio vaccines, we would reduce child mortality from 120 to approximately 52 per 1000 livebirths - a truly spectacular reduction. The old polysaccharide pneumococcal vaccine is safe and effective and bulk purchases are likely to cost US$1 a dose or less. Further studies are needed of the effects of pneumococcal vaccine. Immunization of mothers and babies might reduce child mortality by 20%, at a cost of only US$83 per life saved. The available evidence suggests that one dose of pneumococcal vaccine given to every Papua New Guinean over 5 years of age every 5 years would save approximately 6600 lives a year and the vaccine would cost only US$121 per life saved. It will not be easy to achieve high immunization rates throughout Papua New Guinea. Vaccines will have to be given the highest possible priority, with curative medical services secondary to immunization. Health workers, government, the general population and overseas donors will have to be convinced of the very great benefits that will come from effective immunization. A sustained education campaign will be needed in addition to the establishment of an effective delivery system. The time has come for a radical shift in emphasis in Papua New Guinea: from hospitalization to immunization.
BCG Vaccine - therapeutic use
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Bacterial Vaccines - therapeutic use
;
Immunization - economics
;
Infant Mortality
;
Papua New Guinea
;
Pneumococcal Vaccines - therapeutic use
7.Evaluation of the quality of trivalent poliomyelitis vaccine produced in 2007
Journal of Preventive Medicine 2007;17(5):20-23
Background: Trivalent poliomyelitis vaccine was produced from strains which had been supported by Japan. One of the standards of vaccine quality required by WHO is potency and thermostability. Follow that potency at 370C and within 48 hours is not less effective than potency at -200C exceedingly 0,5 lgCCID50. Objectives: To assess the potency of Trivalent poliomyelitis vaccine and the thermostability of mokey vaccine preserved at 370C within 48 hours. Subjects and method: 12 lots of trivalent poliomyelitis vaccine (included 3 types) produced in January 2007 were evaluated by microneutralization technique. Results: Potency of 12 type I lots were all 106,0 CCID50/0,1ml and the disparity of potency at two temperatures were all < 0,5 lgCCID50/0,1ml. Potency of 12 type II lots were all 105,0 CCID50/0,1ml and the disparity of potency at two temperatures were all < 0,5 lgCCID50/0,1ml. Potency of 12 type III lots were all 105,5 CCID50/0,1ml and the disparity of potency at two temperatures were all < 0,5 lgCCID50/0,1ml. Conclusion: 12 final poliovaccine lots produced in Center for research and production of vaccines and biologicals \ufffd?Ha Noi in 2007 met WHO requirements for potency and thermostability.
Poliomyelitis
;
Nonpoliovirus
;
Poliovirus Vaccines/ therapeutic use
;
Oliomyelitis/ immunology
;
epidemiology
9.Progress in biology of dendritic cells.
Journal of Experimental Hematology 2010;18(4):1074-1078
As the most potent antigen-presenting cells (APC), dendritic cells are important in launching both humoral and cellular immune responses against tumor. Although the high evaluation of DC in immunotherapy for cancer by means of DC vaccines, more studies have indicated DC is a heterogeneous population and proved that DC subsets are prominent determinants for the effectiveness of immune responses. Different DC subsets display different receptors and surface molecules, and express different sets of cytokines/chemokines, which result in distinct immunological outcomes. Clinical trials with ex vivo generated DC vaccines also manifest unexpected immunological tolerance as well as allergic response. It is essential to study the biological aspects of human DC subsets, which may be a key to the generation of novel DC-based vaccines. In this article, the progress of studies on biology of dendritic cells including their origins, differentiation, function and application of DC subsets is reviewed.
Cancer Vaccines
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therapeutic use
;
Dendritic Cells
;
immunology
;
Humans
;
Neoplasms
;
therapy
10.Research Progress of Feasibility of Dendritic Cell Antifungal Vaccines.
Guoxin FAN ; Long WANG ; Yueye WANG ; Peilin ZHAO
Journal of Biomedical Engineering 2015;32(3):684-687
Fungal infection is an important clinical problem for patients with immune deficiency or immunosuppression. With deadly fungus infection case increasing, the development of antifungal vaccine attracts the attention of researchers. Dendritic cell (DC) is the unique antigen presenting cell (APC) to trigger the antifungal immune reaction, and recent studies indicate that the targeted vaccination strategy based on DC have prospective antifungal potentials. In this paper, we review the antifungal immunity mechanism and recent development of the targeted DC antifungal strategy.
Dendritic Cells
;
Fungal Vaccines
;
therapeutic use
;
Humans
;
Mycoses
;
immunology
;
therapy