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Results for “Acceptor Characteristics”

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At least 19 recordsLinked to original sources
PubMed1999

Listeria monocytogenes Scott A: cell surface charge, hydrophobicity, and electron donor and acceptor characteristics under different environmental growth conditions.

We determined the variations in the surface physicochemical properties of Listeria monocytogenes Scott A cells that occurred under various environmental conditions. The surface charges, the hydrophobicities, and the electron donor and acceptor characteristics of L. monocytogenes Scott A cells were compared after the organism was grown in different growth media and at different temperatures; to do this, we used microelectrophoresis and the microbial adhesion to solvents method. Supplementing the growth media with glucose or lactic acid affected the electrical, hydrophobic, and electron donor and acceptor properties of the cells, whereas the growth temperature (37, 20, 15, or 8 degrees C) primarily affected the electrical and electron donor and acceptor properties. The nonlinear effects of the growth temperature on the physicochemical properties of the cells were similar for cells cultivated in two different growth media, but bacteria cultivated in Trypticase soy broth supplemented with 6 g of yeast extract per liter (TSYE) were slightly more hydrophobic than cells cultivated in brain heart infusion medium (P < 0.05). Adhesion experiments conducted with L. monocytogenes Scott A cells cultivated in TSYE at 37, 20, 15, and 8 degrees C and then suspended in a sodium chloride solution (1.5 x 10(-1) or 1.5 x 10(-3) M NaCl) confirmed that the cell surface charge and the electron donor and acceptor properties of the cells had an influence on their attachment to stainless steel.

Bacterial Adhesion↗
PubMed1994

Xylosyl transfer to an endogenous renal acceptor. Characteristics of the reaction and properties of the product.

In the course of a study of UDP-xylose:proteoglycan core protein xylosyltransferase (EC 2.4.2.26), another xylosyltransferase was discovered in the soluble fraction of a rat kidney homogenate. The latter enzyme catalyzed [3H]xylosyl transfer from UDP-[3H]xylose to an endogenous acceptor and yielded a product in which the xylose was bound by an alkali-stable linkage. It was therefore concluded that the acceptor was not the core protein of one of the proteoglycans containing a xylose-->serine linkage, since this linkage is cleaved by alkali. The [3H]xylose-labeled product emerged with the void volume when chromatographed on Sephadex G-50, it was precipitated by trichloroacetic acid, and it had a mobility on sodium dodecyl sulfate-polyacrylamide gel electrophoresis corresponding to a molecular mass of about 32,000 Da. Digestion with trypsin or alpha-amylase degraded the labeled product to small fragments, as determined by gel chromatography, suggesting that it was a glycoprotein related to glycogen. A product of similar characteristics was formed when UDP-[3H]glucose was substituted for UDP-[3H]xylose as the glycosyl donor, and the two nucleotide sugars were mutually competitive in the respective transfer reactions, indicating that they were substrates for the same enzyme. On the basis of these findings, it was tentatively concluded that the xylosyltransferase and its acceptor were the renal form of glycogenin.

Animals↗
PubMed2005

Female sterilisation in rural Bihar: what are the acceptor characteristics?

OBJECTIVE: The National Population Policy aims to expand voluntary and informed use of contraceptive services. This paper examines the determinants of use of female sterilisation versus other contraceptive methods in rural Bihar, one of the most socially and economically deprived states in India. METHODS: Data for 1378 ever-married women aged 15-49 years in rural Bihar, who are currently using contraception, were abstracted from the Second National Family Health Survey. A logistic regression model was developed to understand the determinants of use of female sterilisation versus other contraceptive methods. RESULTS: Maternal age, the number of living sons, religion, scheduled caste/tribe/backward class status, exposure to mass media and household standard of living are statistically significant determinants of the choice between sterilisation and other contraceptive methods. CONCLUSION: The study underscores the need to significantly broaden the contraceptive choice for women in rural Bihar.

Adolescent↗
PubMedDate not supplied

Intrauterine contraceptive device (IUCD): socio-demographic characteristics of acceptors, acceptability and effectiveness in a teaching hospital in Nigeria.

This paper reports the socio-demographic characteristics of acceptors and their experience with intrauterine contraceptive device (IUCD) at the University of Ilorin Teaching Hospital Family Planning Clinic between January 1st, 1992 and December 31st, 1992. A total of 1,483 new contraceptive acceptors were seen at the Family Planning Clinic during the period of study of which 822 (55.4%) were first segment IUCD acceptors. The results (net cumulative rates) were expressed as percentage during the period of study. The rates were as follows: accidental pregnancy 1.3%, expulsion 5.1%, continuation 61.4%. The events leading to termination of IUCD use include; medical reasons 6.8%, planning pregnancy 5.2% and unspecified reasons 5.2%. It is concluded that IUCD is a safe and effective contraceptive with a high acceptability. The acceptability of IUCD can be increased by health education, good clinical management, sympathetic counselling, careful client selection, careful insertion, and regular follow-up with quick access to medical care.

Adolescent↗
PubMedDate not supplied

Characteristics of contraceptive acceptors in Lusaka, Zambia.

This paper reports on a study conducted in Lusaka, Zambia in which 2,912 client records were examined in 22 randomly selected clinics throughout Lusaka Province. The purpose of the study was to assist the government and the local family planning association in targeting future efforts to extend services to underserved populations. Among newly enrolled acceptors in 1984, the study revealed a surprisingly low median age of 24 and a median parity of 3. The majority were married, had some secondary education, were unemployed housewives, and were breastfeeding at the time of the first visit. Nearly half had used contraceptives before. Over three-fourths of the clients received contraceptive pills when they enrolled. They returned to the clinic an average of 2.4 times during the first year, but only 24 percent were still active after 12 months. The availability of recently released census data allowed a comparison of contraceptive acceptors with women in the general Lusaka population. Data from urban clinics and smaller clinics in rural parts of the province revealed few significant rural-urban differences. Finally, the study examined trends in age, parity, and education of contraceptive users over a ten-year period.

Adult↗
PubMed1990

Family planning through private practitioners: characteristics of Kenyan contraceptive acceptors.

Kenya has one of the highest population growth rates in the world. Innovative programs are therefore called for to help curb the fast population growth rate. The Kenya Medical Association started a new program of involving private physicians in the active provision of family planning services. A preliminary analysis shows that the program serves generally young, better educated women of low parity. Sixty-one percent of the clients are new acceptors and the oral contraceptive pill the most popular method. The level of education of the clients had marked influence on family size. Age, parity and marital status also influenced the pattern of contraceptive use. These preliminary results are discussed against the background of the 1984 Kenya Contraceptive Prevalence Survey findings and possible areas of improvement suggested.

Adolescent↗
PubMed1993

Sterilisation: characteristics of vasectomy acceptors in Delhi.

The place of vasectomy within the sterilisation programme in Delhi over the period 1983-88 is reviewed and data on vasectomy acceptance and characteristics of acceptors are analysed. Findings suggest a need to improve the strategy for the promotion of vasectomy within the metropolis.

Adolescent↗
PubMedDate not supplied

Contraception and culture: the use of yuyos in Paraguay.

The use of herbs (yuyos) as contraception is common practice in Paraguay. This report analyzes data from the 1995-1996 Paraguayan Reproductive Health Survey. The analysis reveals that women are more familiar with yuyos (88%) than any other method of family planning. Modeling the determinants of ever having relied on yuyos as contraception demonstrates that older women (OR = 1.043) and women with more children (OR = 2.283) are significantly more likely to have used yuyos, but an interaction between older women with more children shows they are less likely to have used this method (OR = .982). Women living in rural areas (OR = .664) and those with more education (OR = .883) are less likely to have used the method. These findings show widespread acceptance and use of yuyos for contraception in Paraguay. More research into the chemical properties of yuyos is needed to determine their contraceptive efficacy and to prevent harmful effects from their misuse.

Adolescent↗
PubMedDate not supplied

[Electron donor capacity of various amino acids].

Constants of equilibria of reactions of 13 amino acids with I2 have been determined. It is shown that the values of constants are determined by the nature of side radicals. The highest values of donor-acceptor characteristics are noted in sulphur-containing amino acids, triptophan, low ones--in hydroxy-amino acids. It is shown on the example of flavonoid quertzetin that formation of donor-acceptor bonds is characteristic of aminoacids parallel to the acid-base interaction.

Acid-Base Equilibrium↗
PubMed1984

Characteristics of contraceptive acceptors in an urban Nigerian setting.

Intensive efforts in promoting family planning concepts and contraceptive delivery in the Third World over the past two- and one-half decades have yielded only token dividends . This has occurred in Nigeria, despite the favorable government attitude. A study of the characteristics of current contraceptive acceptors showed an overwhelming percentage of acceptors are uneducated , married and from the lower socioeconomic class, a striking departure from usual expectations. Most acceptors prefer oral contraceptives. The status of acceptance of modern contraception by the educated population is still undetermined. Contraceptives appeared to be used primarily by women aged 30 and older in our population.

Adolescent↗