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Saeidi H, Ismail P, Samudi Raju C, Khairul-Asri MG, Bakrin IH. Genetic alterations in prostate cancer as diagnostic and prognostic markers. Malays J Pathol 2023; 45:149-155. [PMID: 37658525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 09/03/2023]
Abstract
Prostate cancer is the second-most frequently diagnosed cancer in men worldwide. Serum prostatespecific antigen is currently used for the early detection of prostate cancer. However, new biomarkers are needed to decrease over diagnosis and over treatment of prostate cancer due to limitations of prostate-specific antigen. Recently, molecular biomarkers have shown promising results for diagnosis and prognosis of prostate cancer. Molecular biomarkers have improved the sensitivity and specificity of prostate-specific antigen and studies are ongoing to identify molecular biomarkers as a replacement for prostate-specific antigen. This review aims to give an overview of emerging molecular biomarkers for diagnosis and prognosis of prostate cancer.
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Affiliation(s)
- H Saeidi
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Biomedical Science, Serdang, Malaysia
| | - P Ismail
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Biomedical Science, Serdang, Malaysia
| | - C Samudi Raju
- University of Malaya, Faculty of Medicine, Department of Medical Microbiology, Kuala Lumpur, Malaysia
| | - M G Khairul-Asri
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Urology, Serdang, Malaysia
| | - I H Bakrin
- Universiti Putra Malaysia, Faculty of Medicine and Health Sciences, Department of Pathology, Serdang, Malaysia.
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Saeidi H, Opfermann JD, Kam M, Wei S, Leonard S, Hsieh MH, Kang JU, Krieger A. Autonomous robotic laparoscopic surgery for intestinal anastomosis. Sci Robot 2022; 7:eabj2908. [PMID: 35080901 DOI: 10.1126/scirobotics.abj2908] [Citation(s) in RCA: 43] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Autonomous robotic surgery has the potential to provide efficacy, safety, and consistency independent of individual surgeon's skill and experience. Autonomous anastomosis is a challenging soft-tissue surgery task because it requires intricate imaging, tissue tracking, and surgical planning techniques, as well as a precise execution via highly adaptable control strategies often in unstructured and deformable environments. In the laparoscopic setting, such surgeries are even more challenging because of the need for high maneuverability and repeatability under motion and vision constraints. Here we describe an enhanced autonomous strategy for laparoscopic soft tissue surgery and demonstrate robotic laparoscopic small bowel anastomosis in phantom and in vivo intestinal tissues. This enhanced autonomous strategy allows the operator to select among autonomously generated surgical plans and the robot executes a wide range of tasks independently. We then use our enhanced autonomous strategy to perform in vivo autonomous robotic laparoscopic surgery for intestinal anastomosis on porcine models over a 1-week survival period. We compared the anastomosis quality criteria-including needle placement corrections, suture spacing, suture bite size, completion time, lumen patency, and leak pressure-of the developed autonomous system, manual laparoscopic surgery, and robot-assisted surgery (RAS). Data from a phantom model indicate that our system outperforms expert surgeons' manual technique and RAS technique in terms of consistency and accuracy. This was also replicated in the in vivo model. These results demonstrate that surgical robots exhibiting high levels of autonomy have the potential to improve consistency, patient outcomes, and access to a standard surgical technique.
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Affiliation(s)
- H Saeidi
- Department of Computer Science, University of North Carolina Wilmington, Wilmington, NC 28403, USA.,Department of Mechanical Engineering, Johns Hopkins University; Baltimore, MD 21211, USA
| | - J D Opfermann
- Department of Mechanical Engineering, Johns Hopkins University; Baltimore, MD 21211, USA.,Laboratory for Computational Sensing and Robotics, Johns Hopkins University; Baltimore, MD 21211, USA
| | - M Kam
- Department of Mechanical Engineering, Johns Hopkins University; Baltimore, MD 21211, USA.,Laboratory for Computational Sensing and Robotics, Johns Hopkins University; Baltimore, MD 21211, USA
| | - S Wei
- Laboratory for Computational Sensing and Robotics, Johns Hopkins University; Baltimore, MD 21211, USA.,Department of Electrical and Computer Engineering, Johns Hopkins University; Baltimore, MD 21211, USA
| | - S Leonard
- Laboratory for Computational Sensing and Robotics, Johns Hopkins University; Baltimore, MD 21211, USA
| | - M H Hsieh
- Department of Urology, Children's National Hospital, 111 Michigan Ave. N.W., Washington, DC 20010, USA
| | - J U Kang
- Laboratory for Computational Sensing and Robotics, Johns Hopkins University; Baltimore, MD 21211, USA.,Department of Electrical and Computer Engineering, Johns Hopkins University; Baltimore, MD 21211, USA
| | - A Krieger
- Department of Mechanical Engineering, Johns Hopkins University; Baltimore, MD 21211, USA.,Laboratory for Computational Sensing and Robotics, Johns Hopkins University; Baltimore, MD 21211, USA
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Alyasin A, Agha-Hosseini M, Kabirinasab M, Saeidi H, Nashtaei MS. Serum progesterone levels greater than 32.5 ng/ml on the day of embryo transfer are associated with lower live birth rate after artificial endometrial preparation: a prospective study. Reprod Biol Endocrinol 2021; 19:24. [PMID: 33602270 PMCID: PMC7890906 DOI: 10.1186/s12958-021-00703-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/02/2020] [Accepted: 01/28/2021] [Indexed: 11/24/2022] Open
Abstract
BACKGROUND Previous observational studies have highlighted the negative effects of serum hormone levels at the minimum threshold during frozen embryo transfer (FET) cycles. However, still the questions regarding the maximum threshold level, and the highest allowed dosage of hormonal medications remain unresolved. The present study was conducted to determine whether there is any relationship between the serum progesterone and estradiol levels on the day of ET, and live birth rate (LBR) in patients receiving HRT in FET cycles. METHODS In this prospective cohort study, eligible women who were undergoing their first or second FET cycles with the top graded blastocyst stage embryos were included. All patients received the same HRT regimen. FET was scheduled 5 days after administration of the first dosage of progesterone. On the morning of ET, 4-6 h after the last dose of progesterone supplementation, the serum progesterone (P4, ng/ml) and estradiol (E2, pg/ml) levels were measured. RESULTS Amongst the 258 eligible women that were evaluated, the overall LBR was 34.1 % (88/258). The serum P4 and E2 values were divided into four quartiles. The means of women's age and BMI were similar between the four quartiles groups. Regarding both P4 and E2 values, it was found that the LBR was significantly lower in the highest quartile group (Q4) compared with the others, (P = 0.002 and P = 0.042, respectively). The analysis of the multivariable logistic regression showed that the serum level of P4 on ET day, was the only significant predictive variable for LBR. The ROC curve revealed a significant predictive value of serum P4 levels on the day of ET for LBR, with an AUC = 0.61 (95 % CI: 0.54-0.68, P = 0.002). The optimum level of serum P4, with 70 % sensitivity and 50 %specificity for LBR, was 32.5 ng/ml. CONCLUSIONS The present study suggests that a serum P4 value at the maximum threshold on the day of FET is associated with reduced LBR following blastocyst transfer. Therefore, measuring and monitoring of P4 levels during FET cycles might be necessary. However, the results regarding the necessity for the screening of serum E2 levels before ET, are still controversial, and further prospective studies are required.
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Affiliation(s)
- Ashraf Alyasin
- Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Department of Obstetrics and Gynecology, Shariati Hospital, Tehran University of Medical Sciences, 1411713135, Shariati Hospital, Jalal-e-Al-e-Ahmad Hwy, Tehran, Iran
| | - Marzieh Agha-Hosseini
- Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Department of Obstetrics and Gynecology, Shariati Hospital, Tehran University of Medical Sciences, 1411713135, Shariati Hospital, Jalal-e-Al-e-Ahmad Hwy, Tehran, Iran
| | - Motahareh Kabirinasab
- Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran.
- Department of Obstetrics and Gynecology, Shariati Hospital, Tehran University of Medical Sciences, 1411713135, Shariati Hospital, Jalal-e-Al-e-Ahmad Hwy, Tehran, Iran.
| | - Hojatollah Saeidi
- Department of Biology and Embryology, Omid Fertility Center, Tehran, Iran
| | - Maryam Shabani Nashtaei
- Department of Infertility, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
- Department of Anatomy, School of Medicine, Tehran University of Medical Sciences, Tehran, Iran
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Aghahoseini M, Alyasin A, Rashidi S, Samaei-Nouroozi A, Saeidi H, Shabani-Nashtaei M. The efficacy of gonadotropin-releasing hormone (GNRH) agonist before frozen embryo transfer in improving pregnancy outcome and decreasing miscarriage rate in hyperandrogenic polycystic ovary syndrome women: a randomized clinical trial. ACTA ACUST UNITED AC 2020; 72:212-218. [PMID: 32677772 DOI: 10.23736/s0026-4784.20.04467-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
BACKGROUND The hyper androgenic status is a major complication of polycystic ovarian syndrome (PCOS) that deteriorates endometrial function and increases miscarriage rate. This study was conducted to investigate the efficacy of GnRH agonist before frozen-thawed embryo transfer in improving pregnancy outcome in infertile women with PCOS. METHODS This single-blind, randomized controlled trial was performed at Dr Shariati hospital and Omid Fertility Clinic in Tehran, Iran. In the study were included 178 PCOS women. Patients were then divided into two groups of control and intervention. All women received the standard treatment for the preparation of the endometrial using estradiol valerate at dose of 6-8 mg/day. The intervention group also received diphereline, as GnRH agonist, at two doses, 8 weeks before starting the endometrial preparation. RESULTS Chemical pregnancy in intervention group was 47.7% compared to 35.6% in the control group, revealing no significant difference between two groups. No statistically significant difference was observed between two groups concerning clinical pregnancy rate (43.2% vs. 27.3%). However, rate of ongoing pregnancy was 42.0% in intervention group but 18.0% in the control group, suggesting a significant difference (P=0.001). The rate of miscarriage in the intervention group was 2.6% and in the control group was 33.3%, which was significantly lower (P=0.001). CONCLUSIONS It can be concluded that endometrial preparation using GnRH improves ongoing pregnancy and decreases miscarriage rate. It seems that reduction of androgen level in PCOS patients affects the endometrium and improves the receptivity and implantation of the embryo, resulting in better pregnancy outcomes by reducing the miscarriage rate.
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Affiliation(s)
- Marzieh Aghahoseini
- Department of Gynecology and Obstetrics, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Ashraf Alyasin
- Department of Gynecology and Obstetrics, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Sahar Rashidi
- Department of Gynecology and Obstetrics, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran - .,Department of Obstetrics and Gynecology, Imam Reza Hospital, Kermanshah University of Medical Science, Kermanshah, Iran
| | - Atefeh Samaei-Nouroozi
- Department of Gynecology and Obstetrics, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
| | - Hojatollah Saeidi
- Department of Biology and Embryology, Omid Fertility Center, Tehran, Iran
| | - Maryam Shabani-Nashtaei
- Department of Gynecology and Obstetrics, Shariati Hospital, Tehran University of Medical Sciences, Tehran, Iran
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Saeidi H, Ge J, Kam M, Opfermann JD, Leonard S, Joshi AS, Krieger A. Supervised Autonomous Electrosurgery via Biocompatible Near-Infrared Tissue Tracking Techniques. IEEE Trans Med Robot Bionics 2019; 1:228-236. [PMID: 33458603 PMCID: PMC7810241 DOI: 10.1109/tmrb.2019.2949870] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Autonomous robotic surgery systems aim to improve patient outcomes by leveraging the repeatability and consistency of automation and also reducing human induced errors. However, intraoperative autonomous soft tissue tracking and robot control still remains a challenge due to the lack of structure, and high deformability of such tissues. In this paper, we take advantage of biocompatible Near-Infrared (NIR) marking methods and develop a supervised autonomous 3D path planning, filtering, and control strategy for our Smart Tissue Autonomous Robot (STAR) to enable precise and consistent incisions on complex 3D soft tissues. Our experimental results on cadaver porcine tongue samples indicate that the proposed strategy reduces surface incision error and depth incision error by 40.03% and 51.5%, respectively, compared to a teleoperation strategy via da Vinci. Furthermore, compared to an autonomous path planning method with linear interpolation between the NIR markers, the proposed strategy reduces the incision depth error by 48.58% by taking advantage of 3D tissue surface information.
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Affiliation(s)
- H. Saeidi
- Mechanical Engineering Department, University of Maryland, College Park, MD 20742, USA., Fischell Institute for Biomedical Devices and the Marlene and Stewart Greenebaum Cancer Center
| | - J. Ge
- Mechanical Engineering Department, University of Maryland, College Park, MD 20742, USA., Fischell Institute for Biomedical Devices and the Marlene and Stewart Greenebaum Cancer Center
| | - M. Kam
- Mechanical Engineering Department, University of Maryland, College Park, MD 20742, USA., Fischell Institute for Biomedical Devices and the Marlene and Stewart Greenebaum Cancer Center
| | - J. D. Opfermann
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Childrens National Health System, 111 Michigan Ave. N.W., Washington, DC 20010
| | - S. Leonard
- Electrical and Computer Science Eng. Dept., Johns Hopkins University, Baltimore, MD 21211
| | - A. S. Joshi
- Division of Otolaryngology - Head & Neck Surgery at The George Washington University Medical Faculty Associates, 2300 M St. NW 4th Floor, Washington DC 20037
| | - A. Krieger
- Mechanical Engineering Department, University of Maryland, College Park, MD 20742, USA., Fischell Institute for Biomedical Devices and the Marlene and Stewart Greenebaum Cancer Center
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Kam M, Saeidi H, Wei S, Opfermann JD, Leonard S, Hsieh MH, Kang JU, Krieger A. Semi-autonomous Robotic Anastomoses of Vaginal Cuffs Using Marker Enhanced 3D Imaging and Path Planning. Med Image Comput Comput Assist Interv 2019; 11768:65-73. [PMID: 33521798 PMCID: PMC7841647 DOI: 10.1007/978-3-030-32254-0_8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2023]
Abstract
Autonomous robotic anastomosis has the potential to improve surgical outcomes by performing more consistent suture spacing and bite size compared to manual anastomosis. However, due to soft tissue's irregular shape and unpredictable deformation, performing autonomous robotic anastomosis without continuous tissue detection and three-dimensional path planning strategies remains a challenging task. In this paper, we present a novel three-dimensional path planning algorithm for Smart Tissue Autonomous Robot (STAR) to enable semi-autonomous robotic anastomosis on deformable tissue. The algorithm incorporates (i) continuous detection of 3D near infrared (NIR) markers manually placed on deformable tissue before the procedure, (ii) generating a uniform and consistent suture placement plan using 3D path planning methods based on the locations of the NIR markers, and (iii) updating the remaining suture plan after each completed stitch using a non-rigid registration technique to account for tissue deformation during anastomosis. We evaluate the path planning algorithm for accuracy and consistency by comparing the anastomosis of synthetic vaginal cuff tissue completed by STAR and a surgeon. Our test results indicate that STAR using the proposed method achieves 2.6 times better consistency in suture spacing and 2.4 times better consistency in suture bite sizes than the manual anastomosis.
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Affiliation(s)
- M Kam
- Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
| | - H Saeidi
- Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
| | - S Wei
- Electrical and Computer Science Engineering Department, Johns Hopkins University, Baltimore, MD 21211, USA
| | - J D Opfermann
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue N.W., Washington, DC 20010, USA
| | - S Leonard
- Electrical and Computer Science Engineering Department, Johns Hopkins University, Baltimore, MD 21211, USA
| | - M H Hsieh
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Children's National Health System, 111 Michigan Avenue N.W., Washington, DC 20010, USA
| | - J U Kang
- Electrical and Computer Science Engineering Department, Johns Hopkins University, Baltimore, MD 21211, USA
| | - A Krieger
- Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
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Saeidi H, Le HND, Opfermann JD, Leonard S, Kim A, Hsieh MH, Kang JU, Krieger A. Autonomous Laparoscopic Robotic Suturing with a Novel Actuated Suturing Tool and 3D Endoscope. IEEE Int Conf Robot Autom 2019; 2019:1541-1547. [PMID: 33628614 PMCID: PMC7901147 DOI: 10.1109/icra.2019.8794306] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/26/2023]
Abstract
Compared to open surgical techniques, laparoscopic surgical methods aim to reduce the collateral tissue damage and hence decrease the patient recovery time. However, constraints imposed by the laparoscopic surgery, i.e. the operation of surgical tools in limited spaces, turn simple surgical tasks such as suturing into time-consuming and inconsistent tasks for surgeons. In this paper, we develop an autonomous laparoscopic robotic suturing system. More specific, we expand our smart tissue anastomosis robot (STAR) by developing i) a new 3D imaging endoscope, ii) a novel actuated laparoscopic suturing tool, and iii) a suture planning strategy for the autonomous suturing. We experimentally test the accuracy and consistency of our developed system and compare it to sutures performed manually by surgeons. Our test results on suture pads indicate that STAR can reach 2.9 times better consistency in suture spacing compared to manual method and also eliminate suture repositioning and adjustments. Moreover, the consistency of suture bite sizes obtained by STAR matches with those obtained by manual suturing.
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Affiliation(s)
- H Saeidi
- Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
| | - H N D Le
- Electrical and Computer Science Engineering Department, Johns Hopkins University, Baltimore, MD 21211
| | - J D Opfermann
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Childrens National Health System, 111 Michigan Ave. N.W., Washington, DC 20010
| | - S Leonard
- Electrical and Computer Science Engineering Department, Johns Hopkins University, Baltimore, MD 21211
| | - A Kim
- University of Maryland School of Medicine, 655 W Baltimore S, Baltimore, MD 21201
| | - M H Hsieh
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Childrens National Health System, 111 Michigan Ave. N.W., Washington, DC 20010
| | - J U Kang
- Electrical and Computer Science Engineering Department, Johns Hopkins University, Baltimore, MD 21211
| | - A Krieger
- Department of Mechanical Engineering, University of Maryland, College Park, MD 20742, USA
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Saeidi H, Opfermann JD, Kam M, Raghunathan S, Leonard S, Krieger A. A Confidence-Based Shared Control Strategy for the Smart Tissue Autonomous Robot (STAR). Rep U S 2019; 2018:1268-1275. [PMID: 31475075 DOI: 10.1109/iros.2018.8594290] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
Autonomous robotic assisted surgery (RAS) systems aim to reduce human errors and improve patient outcomes leveraging robotic accuracy and repeatability during surgical procedures. However, full automation of RAS in complex surgical environments is still not feasible and collaboration with the surgeon is required for safe and effective use. In this work, we utilize our Smart Tissue Autonomous Robot (STAR) to develop and evaluate a shared control strategy for the collaboration of the robot with a human operator in surgical scenarios. We consider 2D pattern cutting tasks with partial blood occlusion of the cutting pattern using a robotic electrocautery tool. For this surgical task and RAS system, we i) develop a confidence-based shared control strategy, ii) assess the pattern tracking performances of manual and autonomous controls and identify the confidence models for human and robot as well as a confidence-based control allocation function, and iii) experimentally evaluate the accuracy of our proposed shared control strategy. In our experiments on porcine fat samples, by combining the best elements of autonomous robot controller with complementary skills of a human operator, our proposed control strategy improved the cutting accuracy by 6.4%, while reducing the operator work time to 44 % compared to a pure manual control.
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Affiliation(s)
- H Saeidi
- Mechanical Engineering Department, University of Maryland, College Park, MD 20742, USA. , , ,
| | - Justin D Opfermann
- Sheikh Zayed Institute for Pediatric Surgical Innovation, Childrens National Health System, 111 Michigan Ave. N.W., Washington, DC 20010.
| | - Michael Kam
- Mechanical Engineering Department, University of Maryland, College Park, MD 20742, USA. , , ,
| | - Sudarshan Raghunathan
- Mechanical Engineering Department, University of Maryland, College Park, MD 20742, USA. , , ,
| | - S Leonard
- Electrical and Computer Science Engineering Department, Johns Hopkins University, Baltimore, MD 21211.
| | - A Krieger
- Mechanical Engineering Department, University of Maryland, College Park, MD 20742, USA. , , ,
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Khazaei M, Kalantari E, Saeidi H, ShabaniKia N, Tahergorabi Z, Rashidi B, Dana N, Javanmard SH. Gamma-secretase inhibitor does not modulate angiogenesis in colon adenocarcinoma in obese mice. ACTA ACUST UNITED AC 2015; 116:248-51. [PMID: 25773953 DOI: 10.4149/bll_2015_048] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND Notch is a signaling molecule which plays a role in angiogenesis and γ-secretase is required for processing of Notch. In this study, we investigated the effect of γ-secretase inhibitor (DAPT) on tumor angiogenesis in diet-induced obese mice. METHODS 18 mice were divided into three groups; control, obese (diet-induced) and obese+DAPT. After 15 weeks, the obese mice were subjected for tumor induction of CT26 colon adenocarcinoma cells (5 x 105 cells). When the tumor size reached approximately 350 ± 50 mm3, half of the obese animals received DAPT (10mg/kg/day) subcutaneously. Blood samples were taken after 14 days and the tumors harvested for immunohistochemical staining and capillary density were reported as CD31 positive cells/mm2. RESULTS The obese animals had higher serum leptin and NO concentrations, while, serum VEGF and VEGFR-1 concentrations were not different compare to control group. Administration of DAPT in obese mice significantly reduced serum VEGFR-1 and leptin concentrations and increased serum NO level (p < 0.05). Capillary density in the tumors of obese animals was not different compare to control groups. DAPT administration could not alter capillary density in the tumors. CONCLUSION Administration of DAPT in obese mice altered serum angiogenic factors, however, it could not modulate tumor angiogenesis in diet-induced obese mice (Fig. 4, Ref. 26).
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Tavilani H, Doosti M, Saeidi H. Malondialdehyde levels in sperm and seminal plasma of asthenozoospermic and its relationship with semen parameters. Clin Chim Acta 2005; 356:199-203. [PMID: 15936318 DOI: 10.1016/j.cccn.2005.01.017] [Citation(s) in RCA: 68] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2004] [Revised: 11/17/2004] [Accepted: 01/20/2005] [Indexed: 10/25/2022]
Abstract
BACKGROUND Toxic lipid peroxides are known to cause various impairments of sperm cells and may play a major role in the etiology of male infertility. We determined the level of lipid peroxidation as indicated by malondialdehyde (MDA) in the spermatozoa and seminal plasma of asthenozoospermic and normozoospermic males. METHODS MDA of spermatozoa and seminal plasma was determined in 35 asthenozoospermic and 15 normozoospermic men by spectrofluorometry. Semen analysis was done according to the WHO standard. RESULTS MDA concentration in the spermatozoa of asthenozoospermic was significantly higher than in normozoospermic males (0.14+/-0.059 and 0.09+/-0.04 nmol/10 x 10(6) spermatozoa respectively). The mean+/-S.D. MDA value in the seminal plasma of asthenozoospermic and normozoospermic were 1.35+/-0.42 and 1.2+/-0.3 nmol/ml seminal plasma respectively. CONCLUSIONS Lipid peroxidation has a deleterious effect on the semen quality and MDA is an index of lipid peroxidation which may be a diagnostic tool for the analysis of infertility in the asthenozoospermic patients.
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Affiliation(s)
- Heidar Tavilani
- Department of Medical Biochemistry, Faculty of Medicine, Tehran University of Medical Science, Tehran, Iran
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