Mesenchymal stem cell transplantation in burn wound healing: uncovering the mechanisms of local regeneration and tissue repair.

Burn injuries pose a significant healthcare burden worldwide, often leading to long-term disabilities and reduced quality of life. To explore the impacts of the transplantation of mesenchymal stem cells (MSCs) on the healing of burns and the levels of serum cytokines, 60 fully grown Sprague-Dawley rats were randomly divided into three groups (n = 20 each): group I (control), group II (burn induction), and group III (burn induction + bone marrow (BM)-MSC transplantation). Groups II and III were further divided into four subgroups (n = 5 each) based on euthanasia duration (7, 14, 21, and 28 days post transplant). The experiment concluded with an anesthesia overdose for rat death. After 7, 14, 21, and 28 days, the rats were assessed by clinical, laboratory, and histopathology investigations. The results revealed significant improvements in burn healing potentiality in the group treated with MSC. Furthermore, cytokine levels were measured, with significant increases in interleukin (IL)-6 and interferon alpha (IFN) observed, while IL-10 and transforming growth factor beta (TGF-ß) decreased at 7 days and increased until 28 days post burn. Also, the group that underwent the experiment exhibited increased levels of pro-inflammatory cytokines and the anti-inflammatory cytokine IL-10 when compared to the control group. Histological assessments showed better re-epithelialization, neovascularization, and collagen deposition in the experimental group, suggesting that MSC transplantation in burn wounds may promote burn healing by modulating the immune response and promoting tissue regeneration.

Immunohistochemistry of Leukemia Inhibitory Factor and Integrin αVß3 in Mouse Endometrium Following Kisspeptin-54 Ovulation Trigger.

Kisspeptin (KP) is a group of hypothalamic neuropeptides encoded by KISS-1 gene. KP-54, a 54-amino-acid peptide, helps regulate the hypothalamic-pituitary-ovarian axis and plays a potential role in implantation. C57BL/6 J female mice were superovulated via intraperitoneal injection of 5 International Units (IU) pregnant mare serum gonadotrophin (day 1). Forty-eight hours later, mice (5/group) were injected with phosphate-buffered saline (PBS) (group A), 5 IU human chorionic gonadotrophin (hCG) (group B), or 3 nmol KP-54 (group C). On day 7, mice were euthanized and uteri excised to create paraformaldehyde-fixed paraffin-embedded sections that were immunostained for the implantation markers: leukemia inhibitory factor (LIF) and integrin αVß3 (ITG αVß3). Slides were scored for intensity of staining in endometrial glandular epithelium (GE) and stromal cells (SCs) via histoscore (H-score). Data were analyzed using the Kruskal-Wallis test followed by the Mann-Whitney U test for pairwise comparisons. LIF expression was significantly higher in GE and SCs of mice triggered with KP-54 compared to placebo (P = .009 for both), but only higher than hCG trigger group in SCs (P = .009). Meanwhile, ITG αVß3 expression was significantly higher in SCs of mice triggered with KP-54 compared to placebo (P = .028). In conclusion, using KP-54 as an ovulation trigger resulted in higher expression of the implantation markers LIF and ITG αVß3 in mice endometrium compared to hCG or placebo. This suggests a potential role for KP-54 trigger in improving embryo implantation in clinical IVF. However, further studies are needed to correlate these results with clinical implantation rates and pregnancy outcomes.

Immunoreactivity of Kisspeptin and Kisspeptin Receptor in Eutopic and Ectopic Endometrial Tissue of Women With and Without Endometriosis.

Endometriosis is characterized by the presence of ectopic endometrial tissues. Mechanisms of tissue dissemination in endometriosis may be similar to those involved in tumor metastasis. We hypothesize that dysregulation of kisspeptin (KISS1), a metastasis suppressor in endometrial carcinoma, may contribute to the pathogenesis of endometriosis. In this study, we characterized the immunoreactivity of kisspeptin and its receptor, KISS1R, in eutopic and ectopic endometrial tissue of women with and without endometriosis, in proliferative and secretory menstrual cycle phases. Immunohistochemistry was performed using KISS1 and KISS1R antibodies on samples from women with (n = 35) and without (n = 14) endometriosis. Samples from women with endometriosis included eutopic endometrium (n = 20) samples, superficial endometriotic implants (SUP, n = 10) deep infiltrating endometriotic implants (DIE, n = 15), and ovarian endometriomas (OMA, n = 15). Immunoreactivity was quantified using histoscores. KISS1 and KISS1R immunoreactivity was significantly lower in eutopic endometrial stroma of women with versus without endometriosis, regardless of the menstrual cycle phase (P = 0.001 and P = 0.015 respectively). In endometriotic implants, KISS1 levels were significantly lower in both glandular and stromal components of DIE (P < 0.01) and OMA (P < 0.01) compared to SUP. KISS1R immunoreactivity was lower in the glandular component of OMA (P = 0.035) compared to SUP. KISS1 and KISS1R levels are lower in eutopic endometrial stroma from women with versus without endometriosis, consistent with a role for decreased KISS1 expression in the pathogenesis of endometriosis. As deeply invasive lesions showed lower KISS1 levels than superficial lesions, downregulation of KISS1 levels may contribute to implant invasiveness.

Prevalence and characteristics of female sexual dysfunction in a sample of women from Upper Egypt.

OBJECTIVE: To study the prevalence and associated risk factors for female sexual dysfunction (FSD) in Upper Egypt. METHODS: Married women attending the outpatient clinic of Sohag University Hospital between February 2008 and March 2009 were recruited. Through direct interviews, each woman completed a questionnaire that included questions on sexual dysfunction. RESULTS: From 648 recruited patients, 47 declined to participate in the study. Of the 601 remaining participants, 462 women (76.9%) reported 1 or more sexual problems. Low sexual desire was the most common sexual problem (66.4%). Patients with FSD were significantly more likely to be older than 40 years, have sexual intercourse fewer than 3 times a week, have been married for 10 years or more, have 5 children or more, be circumcised, have a husband aged 40 years or more, and be postmenopausal. Age of the women maintained a statistically significant positive relationship with FSD in the regression model (odds ratio 1.39; 95% CI, 1.26-1.53). CONCLUSIONS: There was a high prevalence of FSD in this sample of women from Upper Egypt. The prevalence of sexual problems increased with increasing age of the women.

Psychiatric morbidity following hysterectomy in Egypt.

OBJECTIVE: To evaluate psychiatric morbidity in Egyptian women before and after hysterectomy for benign indications. METHOD: A 2-year prospective observational study at Sohag University Hospital, Egypt, in which 96 women scheduled for hysterectomy were assessed for psychiatric comorbidity before and after the operation using the General Health Questionnaire (GHQ-28), Beck Depression Inventory, and Hamilton Anxiety Scale. RESULTS: Of these, 35 (36.5%) had scores of 4 or higher, signifying psychiatric comorbidity (group 1), and 61 (63.5%) had scores less than 4, suggesting no psychiatric comorbidity (group 2). Postoperatively, severe anxiety and depressive symptoms were common in group 1. In group 2, 48 (78.7%) of the 61 women had scores of 4 or higher. In that subgroup, depressive and anxiety symptoms were more common among nulliparas whereas women with a high parity experienced the least psychiatric comorbidity. CONCLUSIONS: As women undergoing hysterectomy risk psychiatric morbidity, gynecologists should consider less invasive interventions to treat benign conditions.