This study aims to explore the preventive potential of photobiomodulation (PBM) in bisphosphonate-related osteonecrosis of the jaw (BRONJ) using a rat model.
An experimental rat model was ...established, exposing rats to zoledronic acid (ZA), a primary risk factor for BRONJ. An 810 nm diode laser was applied with parameters of 0.33 W/cm
power density and 10 J/cm
energy density for 30 sec. PBM was initiated 1 day pre-extraction and continued for 2 weeks. The impact of PBM on wound healing in both soft and hard tissues was evaluated post tooth extraction.
ZA exposure hindered wound healing in both soft and hard tissues after tooth extraction. PBM intervention effectively mitigated the adverse effects of ZA, promoting healing processes in both tissue types. This suggests the potential of PBM as a preventive strategy for BRONJ in patients on long-term bisphosphonate treatment. Moreover, PBM exhibited enhanced wound healing in normal rats, indicating its broader applicability beyond BRONJ cases.
PBM shows promise in preventing and improving wound healing in BRONJ and normal cases. These findings underscore the significance of optimizing PBM parameters and suggest its potential clinical relevance as a preventive intervention for BRONJ and a promoter of wound healing.
Safe and efficient delivery of CRISPR/Cas9 systems is still a challenge. Here we report the development of fluorescent nitrogen- and zinc-doped carbon dots (N–Zn-doped CDs) using one-step ...microwave-aided pyrolysis based on citric acid, branched PEI25k, and different zinc salts. These versatile nanovectors with a quantum yield of around 60% could not only transfect large CRISPR plasmids (∼9 kb) with higher efficiency (80%) compared to PEI25k and lipofectamine 2000 (Lipo 2K), but they also delivered mRNA into HEK 293T cells with the efficiency 20 times greater than and equal to that of PEI25k and Lipo 2K, respectively. Unlike PEI25k, N–Zn-doped CDs exhibited good transfection efficiency even at low plasmid doses and in the presence of 10% fetal bovine serum (FBS). Moreover, these nanovectors demonstrated excellent efficiency in GFP gene disruption by transferring plasmid encoding Cas9 and sgRNA targeting GFP as well as Cas9/sgRNA ribonucleoproteins into HEK 293T-GFP cells. Hence, N–Zn-doped CDs with remarkable photoluminescence properties and high transfection efficiency in the delivery of both CRISPR complexes and mRNA provide a promising platform for developing safe, efficient, and traceable delivery systems for biological research.
Background: Vaginal candidiasis is the most prevalent infection among reproductive-aged women. The current treatment for this disorder includes azole compounds. Objectives: The aim of this study was ...to compare the effects of two creams, henna (Lawsonia inermis) and clotrimazole, on vaginal candidiasis. Methods: In this trial, 80 women with vaginal candidiasis were recruited and randomly assigned into two groups to receive either henna (n = 40) or clotrimazole (n = 40) for one week. The ethanol extract of henna was prepared. Vaginal discharge was cultured, and vaginal pH, colony formation, lactobacillus formation, and vaginitis subjective symptoms were evaluated before and one, two, and four weeks after the intervention. The chi-square test, independent t-test, and generalized estimating equations were used for analyzing the data using SPSS version 22. Results: After four weeks of the intervention, almost 90% of the women in the henna group declared no burning sensation, itching, discharge, irritation, or dyspareunia, while only 45%, 5%, 37.5%, 52.5%, and 27.5% of the participants in the clotrimazole group did not have these symptoms, respectively (P < 0.001). The means (SD) of colony formation were 290.85 (47.35) and 265.12 (37.46) in the henna and clotrimazole groups, respectively, at the baseline, which reduced to zero and 25.45 (25.09) in the 4th week of the intervention (P = 0.001). Compared with the clotrimazole group, there was a significant increase in the mean of lactobacillus formation and a significant decrease in vaginal pH in the henna group (P < 0.001). Conclusions: Henna vaginal cream could significantly reduce the symptoms of vaginal candidiasis, such as burning sensation, itching, discharge, irritation, and dyspareunia. Also, it could decrease colony formation and vaginal pH and increase lactobacillus formation.
In December 2019, cases of pneumonia with an unknown pathogen were reporting in Wuhan city, China. The World Health Organization (WHO) recognized it as a pandemic, on March 11, 2020. The most ...frequent site of involvement is the respiratory system. The most common symptoms include cough, fatigue and fever. In some cases, neurological, respiratory and gastrointestinal complications can lead to death. Inflammatory cytokines can play a major role in pathogen damage. Due to the pandemic of COVID-19 and its severe complications, it is critical to identify the high-risk groups. Since this disease has a rapid transmission, following the instructions announced by the WHO, prevention is vital, especially in people with risk factors for disease complications and mortality. According to the latest reports by CDC (Center for Disease Control and Prevention), older age and having some medical conditions such as smoking, obesity (BMI ≥30 kg/m
2
), chronic obstructive pulmonary disease (COPD), heart disease, cancer, solid organ transplant, type 2 diabetes mellitus, chronic renal failure, and sickle cell anemia in younger adults are known disease severity risk factor.
Background: Transverse vaginal septum is a rare mullerian anomaly. Patients with a complete transverse vaginal septum generally complain of primary amenorrhea. Here, we presented a rare case of high ...transverse vaginal septum with abdominal mass during infancy in addition to chronic pelvic pain and cyclic hematuria during adulthood.Case presentation: The patient was a 26-year-old female with complain of severe abdominal and pelvic pain with significant weight loss. She had a history of surgery for correction of hydrometrocolpos (fluid accumulation in the uterus and vagina) because of transverse vaginal septum at infancy period. She had no gynecologic follow-up until the age of 26 years. At the last surgical evaluation, diffuse pelvic endometriosis with advanced metastatic colon cancer was noted.Conclusion: After diagnosis of transverse vaginal septum during infancy period, detailed counseling should be performed about the other treatment and follow-up which is needed to prevent severe complications that could affect the quality of life.
The use of 3D (3-Dimensional) culture systems supported cell-to-cell and cell-to-extracellular matrix (ECM) interactions, proliferation, and differentiation of SSCs (Spermatogonial stem cells). The ...potential advantages of ECM-based scaffolds for in vitro spermatogenesis have been indicated in human and animal experiments. Furthermore, the strong antioxidant and anti-inflammatory activities of melatonin have improved in vitro manipulation of human SSCs in culture conditions.PURPOSEThe use of 3D (3-Dimensional) culture systems supported cell-to-cell and cell-to-extracellular matrix (ECM) interactions, proliferation, and differentiation of SSCs (Spermatogonial stem cells). The potential advantages of ECM-based scaffolds for in vitro spermatogenesis have been indicated in human and animal experiments. Furthermore, the strong antioxidant and anti-inflammatory activities of melatonin have improved in vitro manipulation of human SSCs in culture conditions.SSCs were isolated from the testis of three dead-brain patients and then propagated for four weeks. The characterization of SSC colonies was done using real-time PCR (Polymerase chain reaction), ICC (Immunocytochemistry), and xenotransplantation to mice model. Decellularization of the human testis was performed using 0.3% sodium dodecyl sulfate (SDS) solution and 1% Triton X-100. Also, various characterizations of DTM (Decellularized testicular matrix ) were carried out using histological staining and DNA content analysis. The optimum dose of melatonin was selected by MTT (Methyl thiazol tetrazolium). SSCs were cultured in 4 groups: control, melatonin, ECM, and ECM-melatonin in a differentiation medium for four weeks. The expression of differentiation genes was evaluated by real-time polymerase chain reaction. In addition, the viability of cultured cells was assessed by MTT assay.MATERIALS AND METHODSSSCs were isolated from the testis of three dead-brain patients and then propagated for four weeks. The characterization of SSC colonies was done using real-time PCR (Polymerase chain reaction), ICC (Immunocytochemistry), and xenotransplantation to mice model. Decellularization of the human testis was performed using 0.3% sodium dodecyl sulfate (SDS) solution and 1% Triton X-100. Also, various characterizations of DTM (Decellularized testicular matrix ) were carried out using histological staining and DNA content analysis. The optimum dose of melatonin was selected by MTT (Methyl thiazol tetrazolium). SSCs were cultured in 4 groups: control, melatonin, ECM, and ECM-melatonin in a differentiation medium for four weeks. The expression of differentiation genes was evaluated by real-time polymerase chain reaction. In addition, the viability of cultured cells was assessed by MTT assay.The results of ICC and real-time PCR showed the expression of undifferentiated SSC markers (PLZF and GRFA1) in SSC colonies following the 2D culture of isolated SSCs. The presence of testicular ECM components after different staining methods; and the reduction of DNA content confirmed the proper decellularization process. Germ cell apoptosis significantly decreased in melatonin and ECM groups, and the higher viability of SSCs was seen in the ECM-melatonin group. The relative expression of GFRA1 and PRM2 decreased and increased in ECM and ECM-melatonin groups, respectively.RESULTSThe results of ICC and real-time PCR showed the expression of undifferentiated SSC markers (PLZF and GRFA1) in SSC colonies following the 2D culture of isolated SSCs. The presence of testicular ECM components after different staining methods; and the reduction of DNA content confirmed the proper decellularization process. Germ cell apoptosis significantly decreased in melatonin and ECM groups, and the higher viability of SSCs was seen in the ECM-melatonin group. The relative expression of GFRA1 and PRM2 decreased and increased in ECM and ECM-melatonin groups, respectively.Our study showed that the addition of melatonin to the human naturally-derived ECM scaffold could provide a suitable platform for inducing the differentiation and preserving the viability of SSCs.CONCLUSIONOur study showed that the addition of melatonin to the human naturally-derived ECM scaffold could provide a suitable platform for inducing the differentiation and preserving the viability of SSCs.
Congenital absence of the vagina with variable uterine development known as Mullerian agenesis or Mayer-Rokitansky-Kuster-Hauser syndrome. Cervicovaginal agenesis in the presence of normal uterus is ...very rare. Conservative surgery has recently been suggested in patients with congenital cervicovaginal atresia in order to relieve the symptoms and maintain fertility. A 13-year-old female referred to a pelvic floor clinic, because of primary amenorrhea and severe cyclic pelvic pain. Ultrasonography revealed a large amount of blood accumulation in the uterine cavity, and also, the cervicovaginal agenesis was reported. Both ovaries were normal. A neovagina was created by dissection of the space between the bladder and rectum. Under ultrasonography guidance, two Pezzer catheters were inserted between uterine ending and neovagina, so the catheters kept the canal patent, a soft mould was applied to prevent the vaginal stricture. Cervicovaginal agenesis, accompanied by normal functional endometrium, is a rare but challenging Mullerian anomaly in the case of surgical treatment. One of the successful conservative treatment in a fully educated patient is the vaginal reconstruction and uterovaginal anastomosis by stenting and continues the application of vaginal mould.
Postpartum hemorrhage (PPH) is among the most significant causes of maternal death worldwide. The time of diagnosing and the proper management of hemorrhage are essential in preventing maternal ...mortality. The current study aimed to evaluate the effect of Bakri balloon on the management of PPH. Bakri balloon was effective in controlling PPH of 92.3% of patients. The most frequent indications for using Bakri balloon was uterine atony (46.1%). Furthermore, Bakri balloon is among the simplest and low invasive methods that can be used to control PPH before invasion methods, like hysterectomy.
Background: mechanical bowel preparation (MBP) is a common practice before laparoscopic gynecologic surgeries but the role and efficacy of preparation have been questioned. this study assesses ...visualization and bowel handling in a group of patients who receive MBP and the control group and thereafter; compares the results. Methods: We designed and conducted this randomized, single-blinded and controlled trial on patients who underwent advanced gynecologic laparoscopic surgeries. This clinical trial was carried out between July 2020 and January 2021. The patients were enrolled from l the laparoscopic office. 120 women aged 18-65 years undergoing level 2 and 3 benign gynecologic laparoscopic surgeries were randomized to bowel preparation with a normal saline enema (n=60) or non-bowel preparation (n=60) groups. Our patients underwent level 2 and 3 of benign laparoscopic gynecologic surgeries with or without MBP. The visualization and bowel handling were assessed by the primary surgical team and a questionnaire was later obtained. The outcomes included intraoperative surgical view and bowel handling, preoperative and post-operative patient signs and symptoms. The patients were also assessed in respect to discomfort prior and after the surgery, this assessment was obtained using a questionnaire. The gathered data was analyzed using IBM’s SPSS v26 software. Results: there was no difference in intraoperative visualization and bowel handling between the two groups. We also found no clinical improvements in respect to discomfort and symptoms. MBP even increased the distention rate amongst patients (P-value=0/04). We tried to evaluate whether MBP had any effects on haemorrhage and blood loss during the surgery and to assess this we compared hemoglobin levels before and after the surgery. We compared the subtracted values between the two groups and found no significant difference (T-test=1.135, P=0/259) (see table 4). However, hospitalization duration was about 5 hours longer in the group who received MBP. Conclusion: MBP with normal saline enema does not improve intraoperative visualization and bowel handling. And it also does not reduce patient complication rates and post-operative symptoms either. MBP also increases hospitalization duration and puts extra pressure on the healthcare system. Therefore, a normal saline enema is not recommended before benign gynecologic laparoscopic surgeries.
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