Effects of Bisphenol A on Testosterone Levels and Sexual Behaviors of Male Mice

Objective: To evaluate the effects of bisphenol A (BPA) on testosterone levels and sexual behaviors of male mice. Methods: Forty 12-week-old male mice, 22 - 25 g, were randomly allocated into four equal groups (n = 10 per group): the control group and three BPA exposure groups including low concentration group (10 mg/kg), middle concentration group (50 mg/kg) and high concentration group (100 mg/kg). Each mouse received BPA intraperitoneally injected for 21 consecutive days. Sexual behaviors and testosterone levels in serum and interstitial tissue of testis were measured after the last administration of BPA. Furthermore, we also observed the weights of sexual organs of each group, including testis, epididymis and seminal vesicle. Results: The mount latency in the high concentration group, the intromission latency in the middle and the high concentration group were 11.64 ± 2.67 min, 20.28 ± 3.40 min and 20.13 ± 2.06 min respectively. All of them were longer than the control group (all P < 0.05). The mount frequency, intromission frequency and copulatory efficacy in the high concentration group were 0.52 ± 0.15 numbers/min, 0.37 ± 0.12 numbers/min and 0.40 ± 0.03, which were all statistically lower than the control group (all P < 0.05). The average testis weights in the low, middle and high concentration group were 0.198 ± 0.032 g, 0.203 ± 0.037g and 0.183 ± 0.032 g, and the relative testis weight in the high concentration group was 0.637 ± 0.106. All of these data were lower than the control group (P < 0.05, P < 0.05, P < 0.01 and P < 0.05, respectively). The epididymis weight and the relative epididymis weight, the weight of seminal vesicle and the relative weight of seminal vesicle were 0.069 ± 0.010 g, 0.242 ± 0.040, 0.219 ± 0.042 g and 0.760 ± 0.143, and all of them were lower than the control group (all P < 0.05). The serum testosterone levels in the high concentration group, the intratesticular testosterone levels in the middle and the high concentration group were 7.88 ± 1.62 ng/ml, 75.5 ± 7.18 ng/g and 73.00 ± 9.57 ng/g, which were all lower than the control group (all P < 0.05). Conclusions: BPA can decline the testosterone levels in mice and inhibit their sexual behaviors.

Impact of HIV/sexually transmitted infection testing on risky sexual behaviors among men who have sex with men in Langfang, China

Background Men who have sex with men （MSM） in China remain at high risk for HIV infection, the proportion of reported HIV/AIDS cases that occurred among MSM rose greatly from 2005 to 2011. HIV testing and counseling is a critical HIV prevention strategy among HIV related high-risk population, including MSM in China. This article aimed to assess the association between receiving HIV testing and high-risk sexual behaviors among MSM in Langfang, Hebei Province, China. Methods Between September and November 2007, 233 MSM were recruited to receive an HIV testing intervention. Face-to-face interviews were conducted before HIV testing and 3 months later HIV-related risk behaviors were assessed. Serological testing for HIV and other sexually transmitted infections （STIs） was performed. Results Of the recruited 233 MSM, 200 completed follow-up. Baseline prevalence was 7.8% for HIV, 21.0% for syphilis, 15.8% for gonorrhea, and 5.0% for chlamydia. Multivariate analysis indicated that inconsistent condom use （OR=7.9, 95% CI： 0.9-66.7, P=0.059） and bleeding during anal sex （OR=5.9, 95% Cl： 1.3-26.2, P=0.019） were risk factors for HIV infection, and group sex （OR=6.6, 95% Cl： 2.2-19.7, P=0.001） was a risk factor for syphilis infection at baseline. At 3 months follow-up, among STI-positive MSM, self-reported anal sex fell from 73.1% to 38.5% （P 〈0.001）; group sex fell from 19.2% to 5.8% （P 〈0.001）; and bleeding during anal sex fell from 23.1% to 5.8% （P 〈0.001）. Among STI-negative MSM, the frequency of one-night stands fell from 32.5% to 17.2% （P 〈0.001）, and oral sex rose from 57% to 78.5% （P 〈0.001）. STI-positive MSM were less likely to engage in anal sex compared to STI-negative MSM （X^2=5.189, P=0.023）. Conclusions HIV testing is an important intervention strategy among MSM. HIV testing services among MSM need to be scaled up, along with comprehensive, tailored interventions including condom promotion and STI treatment.

A Survey on the Sexual and Contraceptive Behaviors in Chinese Female College Students

To get information in the sexual and contraceptive behaviors in Chinese female college students, a randomized cluster sampling was conducted in colleges and universities in Wuhan Area, China, in terms of types of colleges, subjects （literature, sciences, medicines, art etc）, and grades etc. A total number of 2450 questionnaires were distributed, with 2365 questionnaires returned being valid. The return rate of valid questionnaires was 96.6 %. The questionnaire investigation was conducted on a multiple-choice and anonymous basis. Data were input into computer and SPSS12.0 software package was employed for statistical analysis. Among the female students, 1196 had the experiences of hugging and kissing （50.57 %） and 423 （17.89 %） had sexual experiences （sexual intercourse）. The first sexual intercourse took place at the age of 19.23±1.74 y. There were significant differences in the sexual experiences among the majors of different subjects, with the rate of sexual experiences in art majors （43.17 %） and high-grade students （34.31%） being the highest. The causes of the first sexual intercourse included sexual impulse, curiosity, intention to strengthen the relationship or to show loyalty to boyfriend and sometimes violence. While the motives of the sexual intercourse within the past one year before the investigation were to satisfy the sexual needs and to strengthen the relation with their boyfriends. With both first intercourse and sexual experiences within last one year, the partners of the sexual intercourse were mainly their boyfriends （95.7 % and 97.3 % respectively）, but the partners also included acquaintances, ＂one night stand＂ partners and customers of sex trade. Some of them had multiple sexual partners, with the highest number of the sexual partners being 11. In the first sexual intercourse of the subjects, 44.0 % of them did not take any contraceptive measures; only 16.4 % of them used condoms. In the sexual intercourse within the last one year, only 44.6 % took contraceptive measures every time they had sexual intercourse. Among those who took contraceptive measures, 64.4 % used condoms. Among those who had sexual intercourse, 101 persons got pregnant, with a rate of pregnancy being 4.3 %, accounting for 23.9 % of all who had sexual intercourse. Among those who got pregnant, 78 persons got pregnant once; the others became pregnant more than two times, the highest being 5 times. There were 122 persons who had inflammation of reproductive system, mostly vaginitis. Other conditions included venereal warts and herpes genitalis. It is concluded that the rate of sexual behaviors is high in female college students and there exist promiscuity, unexpected pregnancy and transmission of STD in the students.

Relationship between Sexual Risk Behaviors and HIV Counseling and Testing (HCT) Uptake among Young People in Nigeria

This study examined the relationship between sexual risk behavior and HIV counselling and testing uptake among young people in Nigeria. Probability sampling technique was used to obtain a sample of 10,091 respondents (ages 15 to 24 years) for the study. The multistage cluster sampling was used to select suitable young people with known probability. Data were collected throughout Nigeria between September and December 2012 from 32,543 households (rural = 22,192;urban = 10,351) using structured and semi-structured questionnaires. The data were summed using descriptive statistics. Frequencies and percentages;measures of central tendencies were used to answer the research question while nonparametric test such as chi-square was used to analyze non-normally distributed data at 0.5 level of significance. Results of data analysis indicated that sexual risk behaviors comprised three variables: sex with multiple partners, intergenerational sex (sex with partners 10 years older), and transactional sex. The results of the chi-square test of association between sex with multiple partners and HCT uptake showed that there was no statistically significant relationship between sex with multiple partners and HCT uptake among young people ages 15 to 24 years in Nigeria. It was among others recommended that sexually active young people in Nigeria should use protection against HIV infection.

Sexual and reproductive health service needs of university/ college students： updates from a survey in Shanghai, China

Aim： To promote the provision of reproductive health services to young people by exploring the attitudes and perceptions of university students in Shanghai, China, toward reproductive health. Methods： From July 2004 to May 2006, 5 243 students from 14 universities in Shanghai took part in our survey. Topics covered the demands of reproductive health-care services, attitudes towards and experience with sex, exposure to pornographic material, and knowledge on sexual health and sexually transmitted infections （STIs）/AIDS. Results： Of the 5 067 students who provided valid answer sheets, 50.05% were female and 49.95% were male, 14.86% were medical students, and 85.14% had non-medical backgrounds. A total of 38.4% of respondents had received reproductive health education previously. The majority of students supported school-based reproductive health education, and also acquired information about sex predominantly from books, schoolmates, and the Internet. Premarital sexual behavior was opposed by 17.7% of survey participants, and 37.5% could identify all the three types of STIs listed in the questionnaire. Although 83.7% knew how HIV is transmitted, only 55.7% knew when to use a condom and 57.8% knew that the use of condoms could reduce the risk of HIV infection. Conclusion： The reproductive health service is lagging behind current attitudes and demands of university students. Although students＇ attitudes towards sexual matters are liberal, their knowledge about reproductive health and STIs/AIDS is still limited. It is therefore necessary to provide effective and confidential reproductive health services to young people.

Seminal characteristics and sexual behavior in men of different age groups： is there an aging effect？

Aim： To assess the seminal characteristics as well as the sexual behavior of men of various age groups to establish the presence of an aging effect on those characteristics. Methods： Semen samples were collected from men （n = 792） undergoing in vitro fertilization or intrauterine insemination in cases of female factor infertility only. Samples were collected using a seminal collection device at intercourse and evaluated manually according to World Health Organization （WHO） standards. Men were divided into four groups according to their ages： （i） 20-30, （ii） 31-40, （iii） 41-50 and （iv） 51-60 years, and their seminal characteristics and responses to a sexual behavior questionnaire were compared. Results： The data showed statistically significant differences in the seminal characteristics tested, most notably in the sperm concentration, motility, grade of motility, hypo-osmotic swelling and normal sperm morphology. Furthermore, the decline in normal sperm morphology with age was more pronounced when using strict criteria rather than WHO standards. There were also differences in total sperm count, total motile sperm and total functional sperm fraction （assessed by both WHO and strict criteria）. Significant differences were also observed in the sexual behavior patterns in older men in terms of the number of years they have been trying to conceive, sexual frequency and sexual satisfaction. Conclusion： The data clearly illustrate an aging effect on semen characteristics and sexual behavior in men as they age. It is suggested that the aging effect be taken into consideration when proposing normal standard values for semen characteristics in routine semen analysis as outlined by WHO standards.

Improved sexual behavior in male rats treated with a Chinese herbal extract： hormonal and neuronal implications

Aim： To investigate the influence of an extract obtained from five Chinese medicinal plants on sexual behavior of adult male rats. Methods： The extract was administered at doses of 30, 60 and 120 mg/kg by oral gavage, acutely （one time, 45 min before mating test） or subchronically （daily for 10 days） in sexually potent and sexually sluggish/impotent rats. Sexual behavior, serum levels of luteinizing hormone （LH） and testosterone （T） were evaluated in treated rats and compared with controls receiving vehicle. The effect of the extract on central dopaminergic neurotransmission was assessed in the nucleus accumbens using a microdialysis technique. Results： In sexually potent rats, both acute and subchronic treatment with the extract dosed at 30 and 60 mg/kg reduced mount latency and intromission latency. In sluggish/impotent rats, the acutely administered extract at the dose of 60 mg/kg shortened ejaculation latency, whereas subchronically administered at the doses of 30 and 60 mg/kg, reduced mount, intromission and ejaculation latencies, increasing also the percentage of mounting and ejaculating rats. The extract dosed at 60 mg/kg significantly increased LH and T following acute and subchronic administration and increased 3,4-dihydroxyphenylacetic acid levels in the nucleus accumbens, 30 min after the acute administration. Conclusion： The improvement in both appetitive and consummatory components of sexual behavior observed in male rats treated with the extract could be ascribed to increased serum T level in parallel with the activation of the central dopaminergic system.

Teenagers’Sexual Behavior in Sweden, Europe

Objective To investigate the development of sexuality from early to late adolescence, and to compare girls and boys of different ages Methods A cross sectional survey in all schools was performed covering all pupils between 13 and 18 years of age that were in school when the survey was conducted. A validated instrument, Q90, created for use in teenagers was distributed in the class- rooms to 3 216 teenagers. Q90 covers 30 questions about body development and sexual behavior. Non-response was insignificant （n=19; 0.6%）. Results Pubertal development was considered “early” or “late” by about 50% of both boys and girls. Eighty percent of the 13 to 15 years old boys and girls had had a romance and 30% had experience of sexual cuddling （petting）, while significantly more girls than boys had sexual intercourse （18% vs 13%; odds ratio 1.5, 95% CI 1.1-1.9）. The difference between girls and boys remained in those being 16-18 years old, where 63% of the girls and 53% of the boys （odds ratio 1.5, 95% CIJ.2-1.9） admitted having intercourse. Mean age at first intercourse was 14.9 and 15 years, respectively. At 16-18 years of age, 23% of the sexually active girls, as compared with 25% of the boys estimated that they had had 6 or more sexual partners. About 30% of the adolescents, irrespective of age and gender, did not use contraceptives at their first and latest intercourse. Eight percent of the older girls had been pregnant, and they had an increased history of sexually transmitted infections, as compared with the boys （6.2% vs 2.7%, odds ratio 2.4, 95% CI 1.2-5.0）. Conclusion Exploring sexuality and experimentation is a normal behavior in adolescence. The results of this study, however, indicate that there are substantial groups of teenagers who practice sexual risk-taking. In addition to general sexual education, programs should also be directed to define sexual risks and its consequences.

Effect of Luteinizing Hormone-Releasing Hormone Analogue on the Sexual Behavior of Sacalia quadriocellata

Luteinizing hormone-releasing hormone(LHRH) is known to influence sexual behavior in many vertebrate taxa, but there have been no systematic studies on the role of LHRH in sexual behavior of turtles. We tested the hypotheses that exogenous LHRH analogues would induce sexual behavior of male Four-eyed turtle, Sacalia quadriocellata. We examined this by challenging males with intramuscular injections of mammalian luteinizing hormone-releasing hormone analogue(LHRH-A), human chorionic gonadotropin(HCG), or a combination of the two, and subsequently exposing them to sexually receptive females for behavioral observation. Our data show that the injection of only HCG could not, while that of only LHRH-A could, facilitate sexual behavior along with testicular recrudescence and spermatogenesis in S. quadriocellata. The injection of both LHRH-A and HCG would induce more drastic sexual behavior of the animals than that of LHRH-A alone, indicating HCG enhances the effects of LHRH-A induced sexual behavior. However, different pharmacological dosages of LHRH-A(0.5 μg, 1 μg, 2 μg per 100 g bodyweight) did not correspond to different activity levels. Though the mechanism of LHRH effect was not determined, this study may support that the sexual behavior of S. quadriocellata which occurs at the beginning of the injection despite regression of the gonads. This is the first report on the exogenous LHRH-A induced sexual behavior for this species.

Sexual Behaviour among Students in a Tertiary Educational Institution in Southeast Nigeria

Background: Sexual behaviour is the manner in which humans experience and express their sexuality. When it is risky, it can lead to untoward health consequences. Objective: The study was undertaking to assess the sexuality pattern of 276 students from a tertiary educational institution in Anambra state of south eastern Nigeria to determine the pattern of risk-behavior among them. Subjects/Methods: This is a cross-sectional questionnaire based study of undergraduates in a tertiary educational institution. Results: Majority of the respondents 190/276 (68.8%) are sexually active. Most of the sexually active respondents are unmarried 156 (82.1%) while only 34 (17.9%) were married. A considerable number of the respondents 34 (17.9%) had 2 to 5 sex partners in the past one year while 26 (13.7%) had at least 6 sex partners the past year also. Interestingly, 140 (73.7%) respondents were having sex for pleasure and while only 14 (7.4%) had sex for money. Conclusion: Majority of the undergraduates in this study indulge in premarital sexual intercourse and usually often with multiple partners. This constitutes high risk sexual behavior. Recommendations: Safer-sex sexuality education is recommended for students in tertiary educational institutions to minimize this ugly trend.

The Cross Sectional Study on the Association between Sexual Awareness and Cognitive Social Capital among High School Students in Ho Chi Minh City, Vietnam

Purpose: We aimed to reveal the association between cognitive social capital and sexual awareness among high school students in Ho Chi Minh City, Vietnam, where adolescent premarital sex is considered to be wide-spreading as consequence of socioeconomic changes, in comparison to our previous study in Hanoi, 2012. Methods: We conducted a questionnaire-based survey and a cross sectional study in late 2014, with 2051 eleventh graders at three high schools in Ho Chi Minh City. Complete data was received from 1935 respondents (94.3%). We assessed basic attributes, sexual knowledge, sexual awareness, sexual experience of peers, cognitive social capital such as a sense of community belonging, and Rosenberg Self-Esteem score. After the independent t-test and multiple logistic regression analyses on sexual awareness were performed assigning trivalent Rosenberg Self-Esteem score, sexual knowledge, and sexual experience of peers as independent variables (model 1), followed by analysis adjusted for cognitive social capital (model 2). This study was approved by Japanese Red Cross Akita College of Nursing (No. 24-003). Results: Of 1935 respondents, 99.9% were 16 or 17 years old and mostly from nuclear families (71.1%). Of all participants, 45.8% in males and 49.4% in females correctly answered on sexual knowledge, 47.6% of males and 28.3% of females accepted premarital sex, 60.0% of male and 65.0% of females knew peers with sexual intercourse experience, and 78.1% of males and 79.1% of females agreed with a sense of community belonging. When multiple logistic regression analyses performed, in model 1, sexual awareness was significantly associated with Rosenberg Self-Esteem score in female. In model 2, above association disappeared but significant association was found between sexual awareness and cognitive social capital in both sexes OR (95% CI), male 1.39 (1.05 - 1.84), female 1.99 (1.49 - 2.65). Discussion: The conservative traditional culture in both Hanoi and Ho Chi Minh City seems to be similar to the concept of cognitive social capital and it is considered to have influenced sexual awareness of high school students in Hanoi and Ho Chi Minh City, Vietnam. Conclusion: Cognitive social capital is significantly associated with sexual awareness among high school students in urban areas of Vietnam.

Impact of Cellphone Radiation on Sexual Behavior and Serum Concentration of Testosterone and LH in Male Mice

Background: Cellphone radiation (CR) has been reported to be related to higher risk of many health problems, but if CR can impair sexual behavior and testosterone synthesis has seldom been studied. Objective: To evaluate the effects of CR on testosterone and luteinizing hormone (LH) levels and sexual behaviors of male mice. Methods: Forty 3-month-old male mice, 22 - 25 g, were randomly allocated into four equal groups (n = 10 per group): the control group and three CR exposure groups including 8-hour group, 16-hour group and 24-hour group. Each mouse received different dose of CR exposure for 30 consecutive days. Sexual behaviors and testosterone and LH levels in serum were measured at the end of experiment. Furthermore, we also observed the weights of reproductive organs of each group, including testis, epididymis and seminal vesicle. Results: The mount latency and intromission latency in 24-hour group were significant higher than the control (both P < 0.01), while no obvious changes were seen in 8-hour group and 16-hour group (all P > 0.05). No difference in ejaculation latency existed among each group after the experiment (all P > 0.05). The frequency of mount and intromission in 24-hour group was statistically significantly lower than that of the control group (P < 0.05 and P < 0.01, respectively). No obvious change in the frequency of mount and intromission of the 8-hour group and 16-hour group was seen (all P > 0.05). Only the copulatory efficacy in the 24-hour group was statistically lower than the control group (P < 0.05). The serum levels of testosterone and LH in the 24-hour group were obviously higher than the control group (testosterone level: P < 0.05;LH level: P < 0.01). No significant differences were seen among the other two experimental groups and the control group (all P > 0.05). After the exposure of CR, the changes in the weights of sexual organs in the 24-hour group were significant compared with the control (testis weights, relative testis weight, epididymis weight, the weight of seminal vesicle, and the relative weight of seminal vesicle, all P < 0.01;the relative epididymis weight, P < 0.05). Conclusions: High dose exposure of CR can decline the testosterone and LH levels in mice and inhibit their sexual behaviors.

Development of the sexually dimorphic nucleus of the preoptic area and the influence of estrogen-like compounds

One of the well-defined sexually dimorphic structures in the brain is the sexually dimorphic nucleus, a cluster of cells located in the preoptic area of the hypothalamus. The rodent sexually dimorphic nucleus of the preoptic area can be delineated histologically using conventional Nissl staining or immunohistochemically using calbindin D28K immunoreactivity. There is increasing use of the cal- bindin D28K-delineated neural cluster to define the sexually dimorphic nucleus of the preoptic area in rodents. Several mechanisms are proposed to underlie the processes that contribute to the sexual dimorphism （size difference） of the sexually dimorphic nucleus of the preoptic area. Recent evidence indicates that stem cell activity, including proliferation and migration presumably from the 3^rd ventricle stem cell niche, may play a critical role in the postnatal development of the sexually dimorphic nucleus of the preoptic area and its distinguishing sexually dimorphic feature： a signifi-cantly larger volume in males. Sex hormones and estrogen-like compounds can affect the size of the sexually dimorphic nucleus of the preoptic area. Despite considerable research, it remains un-clear whether estrogen-like compounds and/or sex hormones increase size of the sexually dimor-phic nucleus of the preoptic area via an increase in stem cell activity originating from the 3^rd ventricle stern cell niche.

Correlation Study on Body Size,Sexual Behavior and Semen Quality of Dezhou Donkey

[ Objective] The study was to explore whether the body size, sexual behavior of male donkey had certain correlation with reproductive traits. [ Method] The data of body weight, body size and sexual behavior of male donkey during production were collected, combining with the semen quality data of ejaculation volume, density, motility and frozen-thawed semen motility were conducted the statistical analysis. [ Results] （ 1 ） Single ejaculation volume had a positive correlation with body height （r = 0. 423, P = 0. 044） and penis circumference （r = 0. 495, P = 0. 043 ） , and total number of sperm per ejaculate had a positiw： correlation with body weight （r = 0. 444, P = 0. 036） and scrotal circumference （r = 0. 520, P = 0. 039） ; （2） Ejaculation volume was negatively correlated with mount times （r = -0. 159, P = 0. 035） and erection time （r = -0. 181, P = 0. 023）, semen density was negatively correlated with mating time （r = - 0.211, P = 0.004）, and total sperm count was negatively correlated with erection time （r = - 0. 159 , P = 0. 047）. [Condusion ] The quality of semen had a certain correlation with body size, body weight and sexual behavior.

Risky Sexual Behavior and Its Determinants among Orphan and Vulnerable Children in Addis Ababa, Ethiopia

Back Ground: Risky sexual behavior among orphans and vulnerable children and its associated physical, psychological and social consequences is becoming a major public health concern globally. Objectives: To assess the prevalence of risky sexual behavior and its determinants among orphan and vulnerable children in Addis Ababa. Methodology: A community based cross sectional study was conducted on three support and care giving organizations for orphans and vulnerable children in Addis Ababa, Ethiopia from March to June 2014. A total of 422 orphan and vulnerable children were selected using systematic sampling. Data were collected using pre tested self-administered questionnaire. Logistic regression was used to analyze the data. Result: A total of 407 (96.4%) respondents participated in this study. Among them 112 (27.5%) had sexual intercourse in their life time, of these 50 (44.6%) started sex before the age of 15, 94 (83.9%) had forced sex, 84 (75.0%) had multiple sexual partners, only 16 (14.3%) used condom the first time they had sex and 96 (85.7%) participated in transactional sex. Females were about 3.25 (2.67 - 7.3) times more likely to engage in risky sexual behavior than male respondents, double orphans had 4.32 (2.45 - 9.54) odds of risky sexual behavior compared to their counterparts. Those respondents who had knowledge of HIV transmission and prevention were less likely to be involved in risky sexual behavior 0.58 (0.41 - 0.93). Conclusion: Orphan and vulnerable children are at a higher likelihood of risky sexual behavior. Intervention targeted at multilevel such as orphan survival training, assertive communication skills, sexuality education and education about HIV risk perception, physical, psychological and human right protection, social support, and economic access for basic needs need to be given consideration.

Influence of Prenatal and Postnatal Stress on the Sexual Behavior of Rats

Objective: To evaluate the effects of prenatal and postnatal stress on the sexual behavior of rats. Methods: Thirty-two 2-month-old male Wistar rats were divided as follows: the EG Group (comprised of 10 rats whose mothers underwent gestational stress), the EO Group (11 rats subjected to postnatal stress), and the SE Group (control group, comprised of 11 animals that went through no stress whatsoever). Upon reaching adulthood, these male rates were introduced to females and had their sexual behavior assessed based on the number of mounts. Results: The animals from the EP Group showed significantly fewer mounts (74 ± 24.77, p < 0.05) when compared to those from the EG (108.9 ± 35.27) and SE (99.6 ± 20.76) Groups. Conclusion: The rats that underwent stress during the first days of life mated fewer times than those whose mothers were subjected to stress during pregnancy. The latter had their sexual behavior unaltered.

Epidemiology of Sexual Behaviour with Risk of Sexually Transmissible Infection (STI) among Students in Africa: The Case of the University of Ouagadougou

Objective: To study the sexual risk behaviors and their determining role in sexually transmissible infection (STI) and HIV among students of the University of Ouagadougou. Methodology: It was a descriptive and analytical single pass cross-sectional study from June 22 to July 21 2010 at the University of Ouagadougou. A cluster sampling in two stages was adopted to form a population of 762. Data were collected using a standardized written questionnaire completed by individual interview after informed consent. Results: The average age of students was 24.2 ± 2 years old for men and 23.7 ± 2 years old women. Singles represented 95.1% of students. The students were not scholarship grantees in 90.6% of the sample. Knowledge about STIs was average in 60.2% of cases. In total 33.65% of the students admitted to having had multiple sexual partners, 19.57% had sex with prostitutes, 34.62% had unprotected sex, 4% practiced sodomy without condoms and 3.1% of students had sex in group with one partner. In multivariate analysis, male gender was the determining factor associated with multiple sexual partner (OR = 3.30 95% CI = 2.19 to 4.95) and relations with prostitutes with an odds ratio of 16.13 (95 = 6.87% to 37.8%). The female gender was the determining factor associated with not using a condom with odds ratio of 1.5 (95% CI = 1.01 to 2.16). Conclusion: There are many risk behaviors for HIV transmission among students of the University of Ouagadougou. The urgent implementation of specific prevention programs to benefit this population is essential.

Sexual Attitudes among College Students: An Approach in Mexico

Objective: To develop a predictive model for HIV/AIDS in the sexual behavior of university students from a public university in the state of Guanajuato. Methodology: Correlational study involved 294 university students from 18 to 19 years of age by stratified random sampling. The instruments used were: attitudes, subjective norms, self-efficacy and intentions for HIV/AIDS and sexual behavior. Descriptive statistics, normality test of Kolmogorov-Smirnov test, Spearman correlation and logistic regression was used. Results: In describing sexual behavior of young students at the beginning of sexual life is observed that 61.9% of them have had sexual life, with higher per- centage in men. Of the 182 university students who reported first sexual intercourse used a contraceptive method 138 and 135 specifically used a condom the first time they had sex. The variables that have the ability to predict the sex drive at the start of sexual life, are the attitudes and perceived behavioral control (X2 = 39,638, df = 4, p < 0.000), reporting a 12.6% of explained variance. Conclusions: In general, university students today are perceived as vulnerable to sexual behavior and have safe sex, which leads us to think that protect not get HIV/AIDS and unwanted pregnancies.

Rural High School Students’ Sexual Behavior and Self-Esteem

Background: Negative consequences for sexual health may be caused by risky sexual behavior related to attitudes, norms and self-efficacy regarding sexuality. Research has not resulted in a consensus on the associations between self-esteem and adolescents’ sexual behavior. Aims and Objectives: The aim of the study was to describe high school students’ sexual behavior and self-esteem, along with investigating the relationship of attitudes, norms, self-efficacy, and self-esteem to sexual risk behavior. Another aim was to describe and compare gender differences in self-esteem and sexual risk behavior in high school students in a rural context. Methodological Design: A cross-sectional design was used. The participants were 139 high school students, 16 to 18 years of age, sample size was decided by power calculation, and systematic randomized sampling was used. The students replied to a questionnaire about self-esteem, factors affecting sexual risk behavior, and sexual behavior. Results: Swedish high school students reported having few sexual partners, a low use of alcohol along with sex, yet a low consistency in condom use. The students reported both high basic self-esteem as well as earned self-esteem. Basic self-esteem was higher for male students while earned self-esteem was higher for female students. Significant correlations were found between self-esteem and some factors affecting sexual risk behavior related to condom use. Conclusion: High school students exhibited positive sexual behaviors and high levels of self-esteem, yet they put themselves at risk by inconsistent use of condoms. Our findings can contribute the need of to an awareness of the role self-esteem, attitudes, norms and self-efficacy plays in adolescents’ sexual behavior. Nurses working at the youth clinics are in a key position to discuss sexual health issues with adolescents to promote healthy outcomes in sexual health.

Consequences of Different Hysterectomy Techniques in Sexual Behavior——A Systematic Review

We conducted a systematic review of the literature to determine the influence of different hysterectomy techniques in the sexual behavior of women who underwent. We searched CENTRAL (The Cochrane Library), PubMed, SCOPUS, CINAHL and LILACS for studies between the years 1998 and 2010 that prospectively examined the sexuality after hysterectomy. Those that were not randomized controlled clinical trials were excluded. It was not available electronically, it was not related with the outcomes determined, it was not research, but publications before 1998 and study which women realized chemotherapy and radiotherapy. From the 455 identified studies, 9 met inclusion criteria. There was variability in how hysterectomies influence in the sexual behavior. Most of studies considered women who underwent vaginal hysterectomy had fewer changes in sexual behavior. Sexual desire, intercourse frequency and orgasm are the sexual aspects reported by women as more changes experimented after surgery. Findings from this study have implications for healthcare providers and policymakers. Each woman needs an individualized care plan that fits within the context of her life, and there are basic interventions that every woman who underwent hysterectomy should receive. This review draws attention to the need for different care plans for women who underwent different hysterectomy techniques.