P.S. Wijesinghe
University of Kelaniya
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Featured researches published by P.S. Wijesinghe.
Journal of Human Reproductive Sciences | 2010
Dmab Dissanayake; P.S. Wijesinghe; Wd Ratnasooriya; S. Wimalasena
RATIONALE: Current knowledge on the relationship between seminal zinc levels and different parameters of human semen is inconsistent. OBJECTIVES: To assess the relationship between seminal plasma zinc and semen quality using two markers; zinc concentration (Zn-C) and total zinc per ejaculate (Zn-T). DESIGN: The study was carried out as a cross-sectional study. SUBJECTS AND METHODS: Semen parameters of 152 healthy men undergoing evaluation for subfertility were assessed. Seminal plasma zinc levels were determined using flame atomic absorption spectrometry. Zn-C, expressed as μg/mL, was multiplied by ejaculated volume to calculate Zn-T. Mann Whitney U test and Chi-square test were used to compare the zinc levels between different seminal groups when appropriate. Correlations were observed with Pearson’s correlation of coefficient. Analysis was carried out using SPSS 10.0 for windows software. RESULTS: Zn-C was low in 23 (15%) samples, while in 32 (21%) of the samples Zn-T was abnormal. The number of subnormal samples was high in the low-zinc groups compared with the normal-zinc groups, 15 vs. 8 (P > 0.05) for Zn-C and 28 vs. 4 (P < 0.001) for Zn-T. Zn-C was significantly high in the asthenozoospermics compared with the normal motile group; 138.11 μg/mL (83.92) vs. 110.69 11 μg/mL (54.59) (P < 0.05). Zn-T was significantly low in samples with hyperviscosity compared with samples with normal viscosity; 220.06 μg (144.09) vs. 336.34 μg (236.33) (P < 0.05). Conversely, Zn-T was high in samples with low viability compared with those with normal viability; 437.67 μg (283.88) vs. 305.15 μg (221.19) (P < 0.05). Weak correlations were found between Zn and some semen parameters. However, the correlation was negative between pH and Zn-C (r = –0.193, P < 0.05) as well as Zn-T (r = –0.280, P < 0.01). On the other hand, correlations were positive between Zn-T and sperm count (r = 0.211, P < 0.05). CONCLUSION: Count, motility, viability, pH and viscosity are affected by variations of seminal plasma zinc. Seminal plasma Zn-T is the better marker for assessing the relationship between zinc and semen quality.
Journal of Human Reproductive Sciences | 2009
Dmab Dissanayake; P.S. Wijesinghe; W.D. Ratnasooriya; S. Wimalasena
CONTEXT: Effects of zinc on male sexual competence are poorly understood. AIM: To study the effects of different doses of zinc on the sexual competence of males using a rat model. MATERIALS AND METHODS: Three subsets (eight in each subset) of sexually experienced adult male rats were supplemented with three different oral doses of zinc sulphate (a daily dose of 1 mg, 5 mg and 10 mg respectively) for two weeks. A subset of eight animals without zinc supplementation was used as the control group Sexual behavior was observed by placing them individually in cages with receptive females. STATISTICAL ANALYSIS: Data analysis was done using SPSS v10 for windows computer software. RESULTS: Supplementation of 5 mg of zinc/day for two weeks led to a prolongation of ejaculatory latency; 711.6 sec. (SEM 85.47) vs. 489.50 sec. (SEM 67.66), P < 0.05 and an increase in number of penile thrusting; 52.80 (SEM 11.28) vs. 26.50 (SEM 6.17), P < 0.05, compared to controls. The same group had elevated prolactin (PRL) and testosterone (T) levels compared to controls at the end of treatment period; PRL- 7.22 ng/dl (SEM 3.68) vs. 2.90 ng/dl (SEM 0.34) and T- 8.21 ng/ml (SEM 6.09) vs. 2.39 ng/ml (SEM 1.79), P < 0.05. In contrast, reduction of libido was evident in the same group, but this effect was not statistically significant (P > 0.05). However, partner preference index was positive and 5 mg zinc supplementation did not exert a significant adverse effect on the muscle strength and co-ordination. The subset of rats supplemented with 1 mg/day did not show a difference from the control group while supplementation with 10 mg/day led to a reduction of the libido index, number of mounts and intromissions. CONCLUSIONS: Zinc therapy improves sexual competence of male rats; the effect is dose dependent. Increase in the T levels is beneficial in this regard. However, increase in PRL is responsible for the reduced libido index. Further studies on pigs and monkeys are needed to evaluate the therapeutic use of zinc in sexual dysfunction.
Journal of Human Reproductive Sciences | 2013
Prabath K. Abeysundara; Dmab Dissanayake; P.S. Wijesinghe; Rrdp Perera; Aan Nishad
CONTEXT: Artificial reproductive techniques using seminal preparations with bacteria may cause pelvic inflammatory disease and its sequalae. AIMS: To assess efficacy of two sperm preparation techniques to clear bacteria and the effect of bacteriospermia on sperm recovery rates. SETTINGS AND DESIGN: A descriptive cross-sectional study was carried out among males of subfertile couples. SUBJECTS AND METHODS: Semen samples were randomly allocated into swim-up method (group S, n = 68) and density gradient method (group D, n = 50) for sperm preparation. Seminal fluid analysis and bacterial cultures were performed in each sample before and after sperm preparation. STATISTICAL ANALYSIS: McNemars chi-squared test and independent samples t-test in SPSS version 16.0 were used. RESULTS: Organisms were found in 86 (72.88%) out of 118 samples, before sperm preparation; Streptococcus species (n = 40, 46.51% of which 14 were Group D Streptococcus species), Coagulase negative Staphylococcus species (n = 17, 19.76%), Staphylococcus aureus (n = 13, 15.11%), Coliform species (n = 11, 12.79% of which 09 were Escherichia coli) and Corynebacterium species (n = 5, 5.81%). There was a statistically significant reduction of culture positive samples in raw vs. processed samples; in group S, 49 (72.05%) vs. 16 (23.52%) and in group D, 37 (74%) vs. 18 (36%). In group S and D, mean (SD) recovery rates of culture positive vs. culture negative samples were 39.44% (SD-14.02) vs. 44.22% (SD-22.38), P = 0.39 and 52.50% (SD-37.16) vs. 49.58% (SD-40.32), P = 0.82 respectively. CONCLUSIONS: Both sperm preparation methods significantly reduced bacteria in semen, but total clearance was not achieved. Sperm recovery rate was not affected by bacteriospermia.
International Journal of Gynecology & Obstetrics | 2005
V. Mayooran; K.I. Deen; P.S. Wijesinghe; A. Pathmeswaran
To determine the endosonographic anatomy of the anal sphincter complex in primigravid Sri Lankan women.
Ceylon Medical Journal | 2012
T.S. Palihawadana; P.S. Wijesinghe; Hr Seneviratne
OBJECTIVES Aim of this study was to describe the proportion of contributory factors of female infertility in a population that sought fertility treatment. Furthermore, the clinical findings and underlying pathologies associated with ovulatory dysfunction were also sought. METHODS A cross-sectional study was carried out at the infertility clinic of the North Colombo Teaching Hospital. New clinic attendees were recruited and both partners had a detailed clinical interview. The women underwent a baseline pelvic ultrasound scan, assessment of ovulation and a hormone profile. Tests for tubal patency were carried out when clinically indicated. RESULTS Ovulatory dysfunction was noted in 53% (n=218). Clinical and investigatory findings associated with ovulatory dysfunction included irregular menstrual cycles, acanthosis nigricans, hirsutism, polycystic ovary syndrome, a LH:FSH ratio of >1, and increased TSH or testosterone levels. Unilateral tubal occlusion was seen in 9.1 % (n=18) while it was bilateral in 1% (n=2). Abnormalities in sexual function were noted in 10.8% (n=56). CONCLUSIONS Abnormalities in ovulation were common. Clinical findings that could be used to recognise women at risk of ovulatory dysfunction were identified. Abnormalities in sexual function, which are often overlooked in the clinical management of infertility, were seen in over 10% of patients. Tubal factor infertility is rare.
International Urogynecology Journal | 2017
Chanil Ekanayake; A. Pathmeswaran; R. P. Herath; H. Suharshi S. Perera; Malitha Patabendige; P.S. Wijesinghe
IntroductionThe multifaceted nature of pelvic floor disorders means that a systematic evaluation is required for optimal treatment outcome. It is also generally acknowledged that a valid tool is necessary to objectively assess symptoms reported by affected women.MethodsThe International Consultation on Incontinence Questionnaire—Vaginal Symptoms (ICIQ-VS) questionnaire was translated to Sinhala and Tamil and a validation study carried out among women attending gynecology clinics at North Colombo Teaching Hospital, Ragama, and the district general hospitals Mannar and Vavuniya.ResultsContent validity was assessed by the level of missing answers, which was < 4% and 2% for each item in Sinhala and Tamil, respectively. Construct validity was assessed by the ability of the questionnaire to differentiate between patients and controls. Both differentiated patients from controls on vaginal symptoms score (VSS) (p < 0.001), sexual symptoms score (SSS) (p < 0.01), and quality of life (QoL) (p < 0.001). There was a strong positive correlation between Pelvic Organ Prolapse Quantification (POP-Q) scores and VSS (Sinhala rs = 0.64, p < 0.001, Tamil rs = 0.65, p < 0.001), and QoL (Sinhala rs = 0.49, p < 0.001, Tamil rs = 0.60, p < 0.001). Internal consistency as assessed using Cronbach’s coefficient alpha: 0.78 (0.76–0.78) and 0.83 (0.80–0.84) in Sinhala and Tamil, respectively. Test–retest reliability was assessed by weighted kappa scores (Sinhala 0.58–0.88 and Tamil 0.76–0.90). Both questionnaires were sensitive to change and showed that VSS and QoL improved following surgery (Wilcoxon matched-pairs signed-rank test p < 0.001).ConclusionThe validated Sinhala and Tamil translations of ICIQ-VS will be useful for assessing vaginal and sexual symptoms among women speaking Sinhala and Tamil.
International Urogynecology Journal | 2017
Chanil Ekanayake; A. Pathmeswaran; A. A. Nilanga Nishad; Kanishka U. Samaranayake; P.S. Wijesinghe
AimsResearch in to lower urinary tract symptoms (LUTS) in women in South Asia is hampered by lack of validated tools. Our aim was to validate the International Consultation on Incontinence Modular Questionnaire on Female Lower Urinary Tract Symptoms (ICIQ-FLUTS) from English to Tamil.MethodAfter translation to Tamil, a validation study was carried out among women attending the gynecology clinic at District General Hospital-Mannar.ResultsContent validity assessed by the level of missing data was <2%. Construct validity was assessed by the ability of the questionnaire to identify patients with incontinence (n = 45) from controls (n = 93) using the incontinence score [patients = 7.7 standard deviation (SD) = 4.7, controls = 1.4 SD = 2.2, p < 0.001] and those with symptomatic anterior wall prolapse (n = 16) from controls (n = 93) using voiding symptoms score (patients = 4.8 SD = 2.3, controls = 0.3 SD = 0.8, p < 0.001). Internal consistency was assessed using Cronbach’s coefficient alpha score [0.80 (0.77–0.81)]. Test–retest reliability assessed by weighted kappa (κ) ranged from 0.73 to 0.87. Patients with incontinence (n = 30, pretreatment incontinence score = 7.9, SD = 4.9 versus posttreatment incontinence score = 3.3, SD = 3.1) and symptomatic anterior wall prolapse (n = 14, preoperative voiding symptoms score = 4.9 SD = 2.5 versus postoperative voiding symptoms score = 0.9 SD = 1.5) showed an improvement with treatment (Wilcoxon matched-–pairs signed-rank test p < 0.001 and p < 0.01, respectively). An incontinence score ≥ 3 (sensitivity = 86.7%, specificity = 78.4%) and a voiding symptoms score ≥ 3 (sensitivity = 87.5%, specificity = 96.2%) detected any form of incontinence and symptomatic anterior wall prolapse, respectively.ConclusionTamil translation of ICIQ-FLUTS retained the psychometric properties of the original English questionnaire and will be an invaluable tool to detect LUTS among Tamil-speaking women.
Ceylon Medical Journal | 2015
T.S. Palihawadana; P.S. Wijesinghe; Hr Seneviratne
OBJECTIVES To compare endometrial thickness following augmentation of ovulation with clomifene (CC) and letrozole and to assess the rate of multi-follicle development and the FSH fluctuations during the stimulated cycles. METHODS A comparative study was carried out at the infertility clinic of Faculty of Medicine, University of Kelaniya, Sri Lanka. Each arm included 25 participants. They received either 100 mg of CC or 2.5 mg of letrozole per day for 5 days starting from 2nd day of the cycle. The fluctuation of FSH in the follicular phase of the cycle, the endometrial thickness and the number of pre-ovulatory follicles on the day of detecting a mature follicle, were measured. RESULTS Treatment with letrozole resulted in a smaller rise in the follicular phase FSH, which was shorter in duration than with CC. Also it resulted in a higher mean endometrial thickness at the time of detecting a mature follicle [9.89 (SD=2.02) mm vs. 8.58 (SD=1.32) mm; p=0.021]. Augmentation of ovulation with CC showed a trend towards multi-follicle development compared to letrozole. CONCLUSIONS This study suggests that letrozole is superior to CC in augmentation of ovulation in terms of endometrial growth and mono-follicle development. However more studies are needed to assess how these differences affect the treatment outcome before it is recommended for clinical use.
Journal of Womens Health, Issues and Care | 2014
R. P. Herath; T. Warnakulasuriya; Asantha De Silva; P.S. Wijesinghe
Methylene Blue Induced Bluish Discoloration Mimicking Cyanosis, at Diagnostic Laparoscopy Methylene blue is commonly used to check patency of Fallopian tubes and tracking fistulae. Intraversation of methylene blue is a recognized complication of diagnostic laparoscopy and dye test. Although a case of cyanosis due to methaemoglobinaemia following methylene blue use is a known complication, cyanosis without methaemoglobinaemia is unknown.
Journal of Obstetrics and Gynaecology Research | 2012
Prabath K. Abeysundara; Goluhewage S. Padumadasa; Warnakulasooriya G. M. Tissera; P.S. Wijesinghe
Xanthogranulomatous inflammation is a rare form of chronic granulomatous inflammation. Bacterial infections, immunosuppression, chronic inflammatory conditions, luminal obstruction, endometriosis, leiomyoma, abnormal lipid metabolism, ineffective antibiotic therapy, ineffective clearance of bacteria by phagocytes and chronic irritation of the urachal remnant have been implicated in the pathogenesis. There are very few reported cases of xanthogranulomatous salpingitis and oophoritis. We present such a case in a 34‐year‐old female, with primary subfertility for eight years, endometriosis, uterine leiomyoma, type II diabetes mellitus and a history of surgery for endometriosis and fibroids and surgical wound infection, who presented with symptoms of intestinal obstruction. The patient underwent emergency laparotomy followed by total abdominal hysterectomy and bilateral salpingo‐oophorectomy. Histology revealed xanthogranulomatous salpingitis and oophoritis. Chronic inflammation due to inadequate treatment of bacterial infection, coupled with pelvic endometriosis and uterine leiomyoma may have led to xanthogranulomatous salpingitis and oophoritis.