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Amor H, Alkhaled Y, Bibi R, Hammadeh ME, Jankowski PM. The Impact of Heavy Smoking on Male Infertility and Its Correlation with the Expression Levels of the PTPRN2 and PGAM5 Genes. Genes (Basel) 2023; 14:1617. [PMID: 37628668 PMCID: PMC10454138 DOI: 10.3390/genes14081617] [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] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/22/2023] [Revised: 08/05/2023] [Accepted: 08/10/2023] [Indexed: 08/27/2023] Open
Abstract
Smoking has been linked to male infertility by affecting the sperm epigenome and genome. In this study, we aimed to determine possible changes in the transcript levels of PGAM5 (the phosphoglycerate mutase family member 5), PTPRN2 (protein tyrosine phosphatase, N2-type receptor), and TYRO3 (tyrosine protein kinase receptor) in heavy smokers compared to non-smokers, and to investigate their association with the fundamental sperm parameters. In total, 118 sperm samples (63 heavy-smokers (G1) and 55 non-smokers (G2)) were included in this study. A semen analysis was performed according to the WHO guidelines. After a total RNA extraction, RT-PCR was used to quantify the transcript levels of the studied genes. In G1, a significant decrease in the standard semen parameters in comparison to the non-smokers was shown (p < 0.05). Moreover, PGAM5 and PTPRN2 were differentially expressed (p ≤ 0.03 and p ≤ 0.01, respectively) and downregulated in the spermatozoa of G1 compared to G2. In contrast, no difference was observed for TYRO3 (p ≤ 0.3). In G1, the mRNA expression level of the studied genes was correlated negatively with motility, sperm count, normal form, vitality, and sperm membrane integrity (p < 0.05). Therefore, smoking may affect gene expression and male fertility by altering the DNA methylation patterns in the genes associated with fertility and sperm quality, including PGAM5, PTPRN2, and TYRO3.
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Affiliation(s)
- Houda Amor
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, 66424 Homburg, Germany
| | - Yaser Alkhaled
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, 66424 Homburg, Germany
| | - Riffat Bibi
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad 44000, Pakistan;
| | - Mohamad Eid Hammadeh
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, 66424 Homburg, Germany
| | - Peter Michael Jankowski
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, 66424 Homburg, Germany
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Bibi R, Jahan S, Kafeel Qureshi S, Razak S, Afsar T, Almajwal A, Kafeel Qureshi M, Hammadeh ME, Amor H. Analysis of sperm chromatin packaging and reproductive biomarker to evaluate the consequence of advanced male age. Front Endocrinol (Lausanne) 2023; 14:1092603. [PMID: 37124745 PMCID: PMC10140363 DOI: 10.3389/fendo.2023.1092603] [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] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 03/23/2023] [Indexed: 05/02/2023] Open
Abstract
In this study, the semen parameters, sperm chromatin integrity, antioxidant enzyme levels, and reproductive hormone levels of subfertile male subjects from Pakistan were assessed in relation to their age. Data on the demographic characteristics of the 750 study participants, including their general health, body mass index (BMI), and reproductive status, were collected from subfertile men from Pakistan. Semen and blood were collected to determine standard semen parameters, sperm chromatin dispersion (Halosperm-SCD), sperm chromatin integrity using toluidine blue (TB) staining, sperm chromatin maturity using chromomycin A3 (CMA3+) staining, and reproductive hormone (FSH, LH, prolactin and testosterone levels). The patients were divided into three groups according to their age: Group 1 included male subjects aged 30 years or less (n = 90), Group 2 included male subjects between the ages of 31 and 40 years (n = 330), and Group 3 included male subjects over 40 years of age (n = 330). Conventional semen parameters, reactive oxygen species (ROS), superoxide dismutase (SOD), guaiacol peroxidase (GPX), catalase (CAT), and lipid peroxidation (MDA) did not statistically (p > 0.05) differ with increasing male age or between different age groups. When compared to younger men (<30 years), sperm SCD (23.2 ± 0.88%) was significantly (p = 0.01) lower as compared to male patients aged >40 years (26.6 ± 0.6%). The concentration of LH, FSH, and testosterone levels were comparable between the groups (p > 0.05), while a significant (p = 0.04) increase in sperm chromatin immaturity CMA3+ (30 ± 0.71%) was observed in the old age group (>40 years) compared to the <30-year group (26.6 ± 1.03%). A positive association was observed between advanced male age and sperm chromatin dispersion (SCD) (r = 0.124, p = 0.001) and decondensation (CMA3+) (r = 0.1, p = 0.009). Despite potential limitations, this study has been carried out with extensive information on the potential risk of male age on sperm integrity. The present study demonstrated the impact of male age on male reproductive health, as these patients had a higher percentage of sperm chromatin damage (SCD) in their semen. Sperm DNA damage assessment will help in the evaluation and diagnosis of the underlying cause of poor fertility and can help clinicians in selecting the right treatment options. Male age is one of the factors that have an impact on the decline in male fertility. As a result, it is preferable for patients receiving assisted reproductive technology to be younger.
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Affiliation(s)
- Riffat Bibi
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad, Pakistan
- *Correspondence: Riffat Bibi, ; Suhail Razak,
| | - Sarwat Jahan
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad, Pakistan
| | - Salma Kafeel Qureshi
- Department of Reproductive Health Sciences, Salma and Kafeel Medical Centre, Islamabad, Pakistan
| | - Suhail Razak
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
- *Correspondence: Riffat Bibi, ; Suhail Razak,
| | - Tayyaba Afsar
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ali Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mashal Kafeel Qureshi
- Department of Reproductive Health Sciences, Salma and Kafeel Medical Centre, Islamabad, Pakistan
| | - Mohammad Eid Hammadeh
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, Homburg, Germany
| | - Houda Amor
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, Homburg, Germany
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Bibi R, Jahan S, Afsar T, Almajwal A, Hammadeh ME, Alruwaili NW, Razak S, Amor H. The influence of paternal overweight on sperm chromatin integrity, fertilization rate and pregnancy outcome among males attending fertility clinic for IVF/ICSI treatment. BMC Pregnancy Childbirth 2022; 22:620. [PMID: 35931982 PMCID: PMC9354411 DOI: 10.1186/s12884-022-04953-z] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2022] [Accepted: 07/30/2022] [Indexed: 11/10/2022] Open
Abstract
Background Low and middle-income countries are facing a rapid increase in obesity and overweight burden, particularly in urban settings. Being overweight in men is associated with infertility and a higher risk to have a low sperm count or no sperm in their ejaculate. Despite potential limitations, this is one of few studies conducted to determine the potential risk of paternal overweight on sperm standard parameters, sperm chromatin integrity and assisted conception outcome including fertilization, embryo quality, cleavage rate, reduce blastocyst development, implantation, and cumulative live birth rate (CLBR). Methods A cross-sectional study of 750 infertile couples undergoing assisted reproduction technique at a single reproductive medicine center of Salma Kafeel Medical Centre Islamabad. Sperm from men undergoing ART were analyzed for chromatin integrity using sperm chromatin dispersion assay (SCD), Chromomycin A3 staining (CMA3), and toluidine blue (TB) staining, while other semen parameters were assessed on same day includes; standard semen parameters, reactive oxygen species (ROS), sperm deformity index (SDI), teratozoospermic index (TZI), and hypo-osmatic swelling test (HOST). Paternal body mass index (BMI) < 24.5–20 kg/m2 served as the reference group, while the male patients with BMI > 24.5-30 kg/m2 were considered to be overweight. Results In the analysis of the percentage of spermatozoa with chromatin maturity (CMA3) and chromatin integrity (TB) was reduced significantly in overweight men (p < 0.01) compared with a reference group. Increase in paternal BMI correlate with the increase in sperm chromatin damage (SCD r = 0.282, TB r = 0.144, p < 0.05), immaturity (CMA3, r = 0.79, p < 0.05) and oxidative stress (ROS) (r = 0.282, p < 0.001). Peri-fertilization effects were increased in oocytes fertilization in couples with overweight men (FR = 67%) compared with normal-weight men (FR = 74.8%), similarly, after univariant regression paternal weight remain predictor of sperm chromatin maturity, successful fertilization and CLBR. In the embryo, developmental stage number of the embryo in cleavage was higher in normal weight men, while day 3 (D3) embryos, percent good quality embryo D3, and blastocyst formation rate were compared able between the groups. The paternal overweight group had significant (p < 0.001) increased neonatal birth weight (2952.14 ± 53.64gm; within normal range) when compared with the reference group (2577.24 ± 30.94gm) following assisted reproductive technology (ART). CLBR was higher (p < 0.05) in normal weight men compared to couples with overweight male partners. CLBR per embryo transfer and per 2PN was a statistically significant (p < 0.05) difference between the two groups. An inverse association was observed in the linear regression model between paternal BMI with fertilization rate and CLBR. Conclusion The present study demonstrated the impact of paternal overweight on male reproductive health, as these patients had a higher percentage of immature sperm (CMA3) with impaired chromatin integrity (SCD, TB) in their semen and had decreased fertilization rate, CLBR following assisted reproductive treatments. The present study supports that paternal overweight should be regarded as one of the predictors for fertilization, CLBR and useful for counseling, to consider body mass index not only in women but also for men, in those couples opting for ART treatment, and warrant a poor reproductive outcome in overweight men.
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Affiliation(s)
- Riffat Bibi
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-I-Azam University Islamabad, Islamabad, 45320, Pakistan
| | - Sarwat Jahan
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-I-Azam University Islamabad, Islamabad, 45320, Pakistan
| | - Tayyaba Afsar
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Ali Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Mohammad Eid Hammadeh
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, Homburg, Germany
| | - Nawaf W Alruwaili
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia
| | - Suhail Razak
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
| | - Houda Amor
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, Homburg, Germany
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Bibi R, Jahan S, Razak S, Hammadeh ME, Almajwal A, Amor H. Protamines and DNA integrity as a biomarkers of sperm quality and assisted conception outcome. Andrologia 2022; 54:e14418. [PMID: 35267207 DOI: 10.1111/and.14418] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/25/2021] [Revised: 02/16/2022] [Accepted: 03/01/2022] [Indexed: 12/22/2022] Open
Abstract
Present research aim was to identify functional tests in semen associated with DNA damage and chromatin maturity (protamination) which predict the outcome in assisted reproduction. Couples were grouped according to male partner semen parameters, into normozoospermia (NZs), severe male factor (SMF) and mild male factor (MMF). DNA fragmentation index (DFI) in spermatozoa was analysed by sperms chromatin dispersion (SCD), sperm chromatin structure assay (SCSA) and acridine orange testing (AOT). Chromomycin A3 (CMA3) and toluidine blue (TB) staining to measure sperm chromatin maturity (CM). DFI and chromatin decondensation were significantly lower in N compared to male factor categories (MMF and SMF). Aneuploidy embryos were significantly higher in couples with male factor infertility (MMF and SMF). A positive correlation was observed between fertilization rate (FR) and live birth rate (LBR) with sperm concentration, motility, vitality, normal sperm morphology and negative correlation between sperm DFI and sperm CM. No correlation was observed between embryo aneuploidy and sperm DFI or CM. Lower percentage of spermatozoa chromatin integrity are associated with low fertilization and live birth rate. Male factor infertility, due to impaired semen parameters and chromatin defects could be regarded in future as an indication of IVF/ICSI, and predictor of assisted reproductive techniques outcome.
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Affiliation(s)
- Riffat Bibi
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad, Pakistan
| | - Sarwat Jahan
- Department of Animal Sciences, Faculty of Biological Sciences, Quaid-i-Azam University Islamabad, Islamabad, Pakistan
| | - Suhail Razak
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Mohammad Eid Hammadeh
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, Homburg, Germany
| | - Ali Almajwal
- Department of Community Health Sciences, College of Applied Medical Sciences, King Saud University, Riyadh, Kingdom of Saudi Arabia
| | - Houda Amor
- Department of Obstetrics, Gynecology and Reproductive Medicine, Saarland University Clinic, Homburg, Germany
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Niamat B, Naveed M, Ahmad Z, Yaseen M, Ditta A, Mustafa A, Rafique M, Bibi R, Sun N, Xu M. Calcium-Enriched Animal Manure Alleviates the Adverse Effects of Salt Stress on Growth, Physiology and Nutrients Homeostasis of Zea mays L.. Plants (Basel) 2019; 8:plants8110480. [PMID: 31703326 PMCID: PMC6918338 DOI: 10.3390/plants8110480] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/21/2019] [Revised: 10/14/2019] [Accepted: 10/29/2019] [Indexed: 11/19/2022]
Abstract
Soil salinity and sodicity are among the main problems for optimum crop production in areas where rainfall is not enough for leaching of salts out of the rooting zone. Application of organic and Ca-based amendments have the potential to increase crop yield and productivity under saline–alkaline soil environments. Based on this hypothesis, the present study was conducted to evaluate the potential of compost, Ca-based fertilizer industry waste (Ca-FW), and Ca-fortified compost (Ca-FC) to increase growth and yield of maize under saline–sodic soil conditions. Saline–sodic soil conditions with electrical conductivity (EC) levels (1.6, 5, and 10 dS m−1) and sodium adsorption ratio (SAR) = 15, were developed by spiking soil with a solution containing NaCl, Na2SO4, MgSO4, and CaCl2. Results showed that soil salinity and sodicity significantly reduced plant growth, yield, physiological, and nutrient uptake parameters. However, the application of Ca-FC caused a remarkable increase in the studied parameters of maize at EC levels of 1.6, 5, and 10 dS m−1 as compared to the control. In addition, Ca-FC caused the maximum decrease in Na+/K+ ratio in shoot up to 85.1%, 71.79%, and 70.37% at EC levels of 1.6, 5, and 10 dS m−1, respectively as compared to the control treatment. Moreover, nutrient uptake (NPK) was also significantly increased with the application of Ca-FC under normal as well as saline–sodic soil conditions. It is thus inferred that the application of Ca-FC could be an effective amendment to enhance growth, yield, physiology, and nutrient uptake in maize under saline–sodic soil conditions constituting the novelty of this work.
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Affiliation(s)
- Bushra Niamat
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan; (B.N.); (Z.A.); (M.Y.); (A.M.)
| | - Muhammad Naveed
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan; (B.N.); (Z.A.); (M.Y.); (A.M.)
- Correspondence: (M.N.); (M.X.)
| | - Zulfiqar Ahmad
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan; (B.N.); (Z.A.); (M.Y.); (A.M.)
| | - Muhammad Yaseen
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan; (B.N.); (Z.A.); (M.Y.); (A.M.)
| | - Allah Ditta
- Department of Environmental Sciences, Shaheed Benazir Bhutto University Sheringal, Upper Dir, Khyber Pakhtunkhwa 18000, Pakistan;
- School of Biological Sciences, The University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
| | - Adnan Mustafa
- Institute of Soil and Environmental Sciences, University of Agriculture, Faisalabad 38040, Pakistan; (B.N.); (Z.A.); (M.Y.); (A.M.)
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
| | - Munazza Rafique
- Soil Bacteriology Section, Agri. Biotechnology Research Institute, AARI, Faisalabad 38000, Pakistan
| | - Riffat Bibi
- Soil and Water Conservation Research Institute (SAWCRI), Chakwal 48630, Pakistan;
| | - Nan Sun
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
| | - Minggang Xu
- National Engineering Laboratory for Improving Quality of Arable Land, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;
- Correspondence: (M.N.); (M.X.)
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Pecorelli I, Branciari R, Roila R, Bibi R, Ranucci D, Onofri A, Valiani A. Evaluation of Aflatoxin M 1 Enrichment Factor in Semihard Cow's Milk Cheese and Correlation with Cheese Yield. J Food Prot 2019; 82:1176-1182. [PMID: 31233360 DOI: 10.4315/0362-028x.jfp-19-023] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
HIGHLIGHTS The aflatoxin M1 content in milk was not related to the enrichment factor. The enrichment factor in 45-day ripened semihard cheese was defined. The enrichment factor in cheese is affected by cheese yield.
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Affiliation(s)
- I Pecorelli
- 1 Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati," Via G. Salvemini 1, 06126 Perugia, Italy
| | - R Branciari
- 2 Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4-06126 Perugia, Italy (ORCID: https://orcid.org/0000-0002-4428-9016 [R. Branciari])
| | - R Roila
- 2 Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4-06126 Perugia, Italy (ORCID: https://orcid.org/0000-0002-4428-9016 [R. Branciari])
| | - R Bibi
- 1 Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati," Via G. Salvemini 1, 06126 Perugia, Italy
| | - D Ranucci
- 2 Department of Veterinary Medicine, University of Perugia, Via San Costanzo, 4-06126 Perugia, Italy (ORCID: https://orcid.org/0000-0002-4428-9016 [R. Branciari])
| | - A Onofri
- 3 Department of Agricultural, Food and Environmental Sciences, University of Perugia, Borgo XX Giugno, 74-06121 Perugia, Italy
| | - A Valiani
- 1 Istituto Zooprofilattico Sperimentale dell'Umbria e delle Marche "Togo Rosati," Via G. Salvemini 1, 06126 Perugia, Italy
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Zaidat OO, Bozorgchami H, Ribó M, Saver JL, Mattle HP, Chapot R, Narata AP, Francois O, Jadhav AP, Grossberg JA, Riedel CH, Tomasello A, Clark WM, Nordmeyer H, Lin E, Nogueira RG, Yoo AJ, Jovin TG, Siddiqui AH, Bernard T, Claffey M, Andersson T, Ribo M, Hetts S, Hacke W, Mehta B, Hacein-Bey L, Kim A, Abou-Chebl A, Shabe P, Hetts S, Hacein-Bey L, Kim A, Abou-Chebl A, Dix J, Gurian J, Zink W, Dabus G, O’Leary, N, Reilly A, Lee K, Foley J, Dolan M, Hartley E, Clark T, Nadeau K, Shama J, Hull L, Brown B, Priest R, Nesbit G, Horikawa M, Hoak D, Petersen B, Beadell N, Herrick K, White C, Stacey M, Ford S, Liu J, Ribó M, Sanjuan, E, Sanchis M, Molina C, Rodríguez-Luna, D, Boned Riera S, Pagola J, Rubiera M, Juega J, Rodríguez N, Muller N, Stauder M, Stracke P, Heddier M, Charron V, Decock A, Herbreteau D, Bibi R, De Sloovere A, Doutreloigne I, Pieters D, Dewaele T, Bourgeois P, Vanhee F, Vanderdouckt P, Vancaster E, Baxendell L, Gilchrist V, Cannon Y, Graves C, Armbruster K, Jovin T, Jankowitz B, Ducruet A, Aghaebrahim A, Kenmuir C, Shoirah H, Molyneaux B, Tadi P, Walker G, Starr M, Doppelheuer S, Schindler K, Craft L, Schultz M, Perez H, Park J, Hall A, Mitchell A, Webb L, Haussen D, Frankel M, Bianchi N, Belagaje S, Mahdi N, Lahoti S, Katema A, Winningham M, Anderson A, Tilley D, Steinhauser T, Scott D, Thacker A, Calderon V, Lin E, Becke S, Krieter S, Jansen O, Wodarg F, Larsen N, Binder A, Wiesen C, Hartney M, Bookhagan L, Ross H, Gay J, Snyder K, Levy E, Davies J, Sonig A, Rangel-Castilla L, Mowla A, Shakir H, Fennell V, Atwal G, Natarajan S, Beecher J, Thornton J, Cullen A, Brennan P, O’Hare A, Asadi H, Budzik R, Taylor M, Jennings M, Laube F, Jackson J, Gatrell R, Reebel L, Albon A, Gerniak J, Groezinger K, Lauf M, Voraco N, Pema P, Davis T, Hicks W, Mejilla J, Teleb M, Sunenshine P, Russo E, Flynn R, Twyford J, Ver Hage A, Smith E, Apolinar L, Blythe S, Maxan J, Carter J, Taschner T, Bergmann U, Meckel S, Elsheik S, Urbach H, Maurer C, Egger K, Niesen W, Baxter B, Knox, A, Hazelwood B, Quarfordt S, Calvert J, Hawk H, Malek, R, Padidar A, Tolley U, Gutierrez A, Mordasini P, Seip T, Balasubramaniam R, Gralla J, Fischer U, Zibold F, Piechowiak E, DeLeacy R, Apruzzeses R, Alfonso C, Haslett J, Fifi J, Mocco J, Starkman S, Guzy, J, Grunberg N, Szeder V, Tateshima S, Duckwiler G, Nour M, Liebeskind D, Tang X, Hinman J, Tipirneni A, Yavagal D, Guada L, Bates K, Balladeras S, Bokka S, Suir S, Caplan J, Kandewall P, Peterson E, Starke R, Puri A, Hawk M, Brooks C, L’Heurex J, Ty K, Rex D, Massari F, Wakhloo A, Lozano D, Rodrigua K, Pierot L, Fabienne M, Sebastien S, Emmoinoli M. Primary Results of the Multicenter ARISE II Study (Analysis of Revascularization in Ischemic Stroke With EmboTrap). Stroke 2018; 49:1107-1115. [DOI: 10.1161/strokeaha.117.020125] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2017] [Revised: 02/05/2018] [Accepted: 02/26/2018] [Indexed: 02/04/2023]
Affiliation(s)
- Osama O. Zaidat
- From the Department of Neuroscience, Mercy St. Vincent Medical Center, Toledo, OH (O.O.Z., E.L.)
| | | | - Marc Ribó
- Department of Neuroradiology, Vall d’Hebron University Hospital, Barcelona, Spain (M.R., A.T.)
| | - Jeffrey L. Saver
- Department of Neurology, David Geffen School of Medicine, University of California, Los Angeles (J.L.S.)
| | - Heinrich P. Mattle
- Department of Neurology, Inselspital, University of Bern, Switzerland (H.P.M.)
| | - René Chapot
- Department of Radiology and Neuroradiology, Alfried Krupp Krankenhaus, Essen, Germany (R.C., H.N.)
| | - Ana Paula Narata
- Centre Hospitalier Régional Universitaire, Hôpitaux de Tours, France (A.P.N.)
| | | | - Ashutosh P. Jadhav
- Department of Neurology, University of Pittsburgh Medical Center, PA (A.P.J., T.G.J.)
| | - Jonathan A. Grossberg
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, GA (J.A.G., R.G.N.)
| | | | - Alejandro Tomasello
- Department of Neuroradiology, Karolinska University Hospital, Karolinska Institute, Stockholm, Sweden (T.A.)
| | - Wayne M. Clark
- Oregon Health and Science University Hospital, Portland (H.B., W.M.C.)
| | - Hannes Nordmeyer
- Department of Radiology and Neuroradiology, Alfried Krupp Krankenhaus, Essen, Germany (R.C., H.N.)
| | - Eugene Lin
- From the Department of Neuroscience, Mercy St. Vincent Medical Center, Toledo, OH (O.O.Z., E.L.)
| | - Raul G. Nogueira
- Department of Neurosurgery, Emory University School of Medicine, Atlanta, GA (J.A.G., R.G.N.)
| | - Albert J. Yoo
- Department of Interventional Radiology, Texas Stroke Institute, Dallas–Fort Worth (A.J.Y.)
| | - Tudor G. Jovin
- Department of Neurology, University of Pittsburgh Medical Center, PA (A.P.J., T.G.J.)
| | | | | | | | - Tommy Andersson
- Department of Neuroradiology, Vall d’Hebron University Hospital, Barcelona, Spain (M.R., A.T.)
- AZ Groeninge, Kortrijk, Belgium (O.F., T.A.)
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Herbreteau D, Janot K, Boustia F, Narata A, Bibi R. Vingt patients embolisés par WEB dans le cadre d’une hémorragie sous arachnoïdienne. J Neuroradiol 2018. [DOI: 10.1016/j.neurad.2018.01.022] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Narata AP, de Moura FS, Larrabide I, Perrault CM, Patat F, Bibi R, Velasco S, Januel AC, Cognard C, Chapot R, Bouakaz A, Sennoga CA, Marzo A. The Role of Hemodynamics in Intracranial Bifurcation Arteries after Aneurysm Treatment with Flow-Diverter Stents. AJNR Am J Neuroradiol 2018; 39:323-330. [PMID: 29170270 DOI: 10.3174/ajnr.a5471] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [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: 06/20/2017] [Accepted: 10/02/2017] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Treatment of intracranial bifurcation aneurysms with flow-diverter stents can lead to caliber changes of the distal vessels in a subacute phase. This study aims to evaluate whether local anatomy and flow disruption induced by flow-diverter stents are associated with vessel caliber changes in intracranial bifurcations. MATERIALS AND METHODS Radiologic images and demographic data were acquired for 25 patients with bifurcation aneurysms treated with flow-diverter stents. Whisker plots and Mann-Whitney rank sum tests were used to evaluate if anatomic data and caliber changes could be linked. Symmetry/asymmetry were defined as diameter ratio 1 = symmetric and diameter ratio <1 = asymmetric. Computational fluid dynamics was performed on idealized and patient-specific anatomies to evaluate flow changes induced by flow-diverter stents in the jailed vessel. RESULTS Statistical analysis identified a marked correspondence between asymmetric bifurcation and caliber change. Symmetry ratios were lower for cases showing narrowing or subacute occlusion (medium daughter vessel diameter ratio = 0.59) compared with cases with posttreatment caliber conservation (medium daughter vessel diameter ratio = 0.95). Computational fluid dynamics analysis in idealized and patient-specific anatomies showed that wall shear stress in the jailed vessel was more affected when flow-diverter stents were deployed in asymmetric bifurcations (diameter ratio <0.65) and less affected when deployed in symmetric anatomies (diameter ratio ∼1.00). CONCLUSIONS Anatomic data analysis showed statistically significant correspondence between caliber changes and bifurcation asymmetry characterized by diameter ratio <0.7 (P < .001). Similarly, computational fluid dynamics results showed the highest impact on hemodynamics when flow-diverter stents are deployed in asymmetric bifurcations (diameter ratio <0.65) with noticeable changes on wall sheer stress fields. Further research and clinical validation are necessary to identify all elements involved in vessel caliber changes after flow-diverter stent procedures.
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Affiliation(s)
- A P Narata
- From the University Hospital of Tours (A.P.N., R.B.), Tours, France
| | - F S de Moura
- Engineering, Modeling, and Applied Social Sciences Center (F.S.d.M.), Federal University of ABC, Santo André, Brazil
| | - I Larrabide
- PLADEMA-CONICET (I.L.), Universidad Nacional del Centro de la Provincia de Buenos Aires, Tandil, Argentina
| | - C M Perrault
- Mechanical Engineering Department, INSIGNEO Institute for in Silico Medicine (C.M.P., A.M.), University of Sheffield, Sheffield, United Kingdom
| | - F Patat
- UMR "Imagerie et Cerveau," Inserm U930 (F.P., A.B., C.A.S.), Université Francois Rabelais, Tours, France
| | - R Bibi
- From the University Hospital of Tours (A.P.N., R.B.), Tours, France
| | - S Velasco
- University Hospital of Poitiers (S.V.), Poitiers, France
| | - A-C Januel
- University Hospital of Toulouse (A.-C.J., C.C.), Toulouse, France
| | - C Cognard
- University Hospital of Toulouse (A.-C.J., C.C.), Toulouse, France
| | - R Chapot
- Alfried Krupp Krankenhaus (R.C.), Essen, Germany
| | - A Bouakaz
- UMR "Imagerie et Cerveau," Inserm U930 (F.P., A.B., C.A.S.), Université Francois Rabelais, Tours, France
| | - C A Sennoga
- UMR "Imagerie et Cerveau," Inserm U930 (F.P., A.B., C.A.S.), Université Francois Rabelais, Tours, France
| | - A Marzo
- Mechanical Engineering Department, INSIGNEO Institute for in Silico Medicine (C.M.P., A.M.), University of Sheffield, Sheffield, United Kingdom
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Herbreteau D, Bibi R, Narata AP, Janot K, Papagiannaki C, Soize S, Pierot L. Are Anatomic Results Influenced by WEB Shape Modification? Analysis in a Prospective, Single-Center Series of 39 Patients with Aneurysms Treated with the WEB. AJNR Am J Neuroradiol 2016; 37:2280-2286. [PMID: 27538903 DOI: 10.3174/ajnr.a4918] [Citation(s) in RCA: 51] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2016] [Accepted: 07/07/2016] [Indexed: 11/07/2022]
Abstract
BACKGROUND AND PURPOSE Endovascular treatment with the flow-disrupter Woven EndoBridge aneurysm embolization system (WEB) is an innovative treatment for wide-neck bifurcation aneurysms. Prospective, multicenter studies have shown the high safety of this technique. Stability of aneurysm occlusion in long-term follow-up has been rarely studied. Moreover the "compression" phenomenon has been reported and seems to be associated with poor anatomic results. This prospective, single-center series analyzes the safety and efficacy of the WEB device in long-term follow-up in relation to WEB shape modification. MATERIALS AND METHODS All patients with aneurysms treated with the WEB were prospectively included in a data base. Demographics, aneurysm characteristics, adverse events, and anatomic results were retrospectively analyzed. Anatomic results and modification of the WEB shape on the follow-up examinations were independently evaluated by a core laboratory. RESULTS Thirty-nine patients were included. We observed few complications: intraoperative rupture in no patients (0.0%) and thromboembolic events in 3 patients (7.7%) with a permanent deficit in 1 (2.6%). At short-term, midterm, and long-term follow-up, adequate occlusion was obtained in 86.8%, 83.3%, and 87.5%, respectively. Retreatment rates were low (5.1%). At 6 months, WEB shape modification (compression/retraction) was observed in 31.6% of patients but was not associated with a lower rate of adequate occlusion. CONCLUSIONS This prospective, single-center series with WEB devices used in 39 patients during 3.5 years confirms data from previous multicenter studies. Treatment can be accomplished with good safety and efficacy, with a high rate of adequate occlusion. Anatomic results were not worse in case of WEB shape modification.
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Affiliation(s)
- D Herbreteau
- From the Department of Neuroradiology (D.H., R.B., A.P.N., K.J.), Bretonneau Hospital, University of Tours, Tours, France .,University François-Rabelais (D.H.), Tours, France
| | - R Bibi
- From the Department of Neuroradiology (D.H., R.B., A.P.N., K.J.), Bretonneau Hospital, University of Tours, Tours, France
| | - A P Narata
- From the Department of Neuroradiology (D.H., R.B., A.P.N., K.J.), Bretonneau Hospital, University of Tours, Tours, France
| | - K Janot
- From the Department of Neuroradiology (D.H., R.B., A.P.N., K.J.), Bretonneau Hospital, University of Tours, Tours, France
| | - C Papagiannaki
- Department of Neuroradiology (C.P.), Charles Nicole Hospital, University of Rouen, Rouen, France
| | - S Soize
- Department of Neuroradiology (S.S., L.P.), Centre Hospitalier Universitaire Reims, University Reims-Champagne-Ardenne, Reims, France
| | - L Pierot
- Department of Neuroradiology (S.S., L.P.), Centre Hospitalier Universitaire Reims, University Reims-Champagne-Ardenne, Reims, France
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Adnan M, Bibi R, Azizullah A, Andaleeb R, Mussarat S, Tariq A, Ullah R, Elsalam NM, Khan AL, Begum S. Ethnomedicinal plants used against common digestive problems. Afr J Trad Compl Alt Med 2015; 12:99. [DOI: 10.4314/ajtcam.v12i5.15] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/01/2023]
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Rahim N, Naqvi SBS, Alam M, Iqbal E, Bibi R. Validated High Performance Liquid Chromatography Method for Analysis of Cefadroxil Monohydrate in Human Plasma. TROP J PHARM RES 2014. [DOI: 10.4314/tjpr.v13i6.22] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
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13
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Jahan S, Bibi R, Ahmed S, Kafeel S. Leptin levels in infertile males. J Coll Physicians Surg Pak 2012; 21:393-7. [PMID: 21777525 DOI: 07.2011/jcpsp.393397] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Subscribe] [Scholar Register] [Received: 07/30/2010] [Accepted: 07/21/2011] [Indexed: 12/01/2022]
Abstract
OBJECTIVE To determine the leptin levels in the serum of normal, subfertile and infertile men. STUDY DESIGN Analytical study. PLACE AND DURATION OF STUDY Department of Animal Sciences Quaid-e-Azam University, Islamabad, National Institute of Health (NIH), Islamabad and Dr. Salma and Kafeel Medical Centre, Islamabad, from April to December 2009. METHODOLOGY Serum leptin levels hormonal concentrations (LH, FSH and testosterone) were determined by EIA in 154 males including 24 (15.58%) fertile, 19 (12.34%) polyzoospermic (PZs), 26 (16.88%) teratozoospermic (TZs), 27 (17.53%) astheno-teratozoospermic (ATZs), 18 (11.69%) oligozoospermic (OZs), 18 (11.69%) oligo-astheno-teratozoospermic (OATZs), 11 (7.14%) obstructive azoospermic (OBST-AZOOs) and 11 (7.14%) non-obstructive azoospermic (NON-OBSTAZOOs). BMI was also determined, divided into groups of greater than 24. Hormonal concentrations were compared by ANOVA and correlation was performed by using Graph pad prism version 5. RESULTS Significantly high levels of leptin concentrations were found in fertile (p < 0.001) as well as TZs, PZs, OZs, ATZs, (p < 0.001), OATZs (p < 0.01) and NON-OBST-AZOOs (p < 0.05) male subjects with BMI > 24 compared to fertile and infertile male patients with BMI < 24. Serum testosterone concentrations were significantly lower in PZs, OATZs, OZs, NON-OBST-AZOOs male patients with BMI < 24 compared to PZs (p < 0.05), OATZs, OZs (p < 0.01), OBST-AZOOs (p < 0.001) male patients with BMI > 24. Leptin showed a significant positive correlation with LH (p < 0.01) and FSH (p < 0.002) and a significant negative correlation with testosterone (p < 0.001). CONCLUSION Abnormal leptin level was significantly associated with fertility problems in males. Providing a link between leptin and reproduction factors contributing in control of testosterone and gonadotropins secretion in many aspects depending on fertility status in male subjects. BMI appears to have significant association with serum leptin levels.
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Affiliation(s)
- Sarwat Jahan
- Department of Animal Sciences, Quaid-i-Azam University, Islamabad.
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Adeel AL, Jahan S, Subhan F, Alam W, Bibi R. Total anti-oxidant status: a biochemical predictor of human male fertility. Andrologia 2011; 44 Suppl 1:20-5. [DOI: 10.1111/j.1439-0272.2010.01131.x] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022] Open
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Papagiannaki C, Cottier JP, Barbier C, Bibi R, Herbreteau D. Quadruple spontaneous cervical artery dissection following aneurysm embolization: a rare posttreatment complication. AJNR Am J Neuroradiol 2011; 32:E3-4. [PMID: 20110376 PMCID: PMC7964928 DOI: 10.3174/ajnr.a1963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [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: 08/28/2009] [Accepted: 09/08/2009] [Indexed: 12/27/2022]
Abstract
We present a unique case of multiple sCADs occurring after a ruptured intracranial aneurysm embolization. We discuss the impact of head extension during embolization as the prevailing factor in multiple artery dissections in this case and point out another cause of new-onset neurologic deficit in patients with aneurysmal SAH.
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Abstract
This is a case report of successful arterial embolization of a dural fistula using absolute alcohol. In this two-part embolization of a dural fistula of the left sagittal venous sinus, the use of n-BCA (n-butyl-cyanoacrylate) was followed by 1 ml of absolute alcohol four months later. The first procedure, using n-BCA via the external carotid, permitted exclusion of the arterial supply coming from the medial meningeal and occipital arteries. Persistence of the blood supply through the internal carotid prompted us to perform the second procedure, to occlude the tentorium marginalis artery, using 1 ml of 95% ethanol. This was followed by a cranial nerve (III) palsy that was reversible. The three-month follow-up was satisfactory, although arteriography after one year showed revascularization of the fistula, which was successfully treated by Onyx. Routinely used in the treatment of superficial vascular malformations, the use of absolute alcohol intracerebrally appears to be unreliable, with results that were only temporary.
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Affiliation(s)
- C Barbier
- Service de neuroradiologie, hôpital Bretonneau, CHRU de Tours, 2, boulevard Tonnellé, 37044 Tours cedex 1, France
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Bibi R, Pranesh N, Saunders MP, Wilson MS, O'Dwyer ST, Stern PL, Renehan AG. A specific cadherin phenotype may characterise the disseminating yet non-metastatic behaviour of pseudomyxoma peritonei. Br J Cancer 2006; 95:1258-64. [PMID: 17031402 PMCID: PMC2360585 DOI: 10.1038/sj.bjc.6603398] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
Abstract
Pseudomyxoma peritonei (PMP) is a rare neoplasm of mainly appendiceal origin, characterised by excess intra-abdominal mucin production leading to high morbidity and mortality. While histological features are frequently indolent, this tumour disseminates aggressively throughout the abdominal cavity, yet seldom metastasises. This study determined the expression of several markers of colorectal differentiation (carcinoembryonic antigen (CEA), cytokeratins (CK20 and CK7), epithelial membrane antigen), mucin production (MUC-2, interleukin-9 (IL-9), IL-9 receptor (IL-9Rα)), and cell adhesion (N- and E-cadherin, vimentin) in PMP tissue (n=26) compared with expressions in normal colonic mucosa (n=19) and colorectal adenocarcinoma (n=26). Expressions of CEA and cytokeratins were similar for PMP as those in colorectal adenocarcinomas with the exception that the CK20−/CK7− pattern was rare in PMP (Fisher's exact test: P=0.001). Similarly, expressions of mucin-related proteins were comparable for adenocarcinoma and PMP, with the exception that IL-9 expression was uncommon in adenocarcinoma (P=0.009). Pseudomyxoma peritonei demonstrated a specific pattern of adhesion-related protein expressions of increased N-cadherin, reduced E-cadherin, and increased vimentin (P=0.004), a phenotype suggesting a possible epithelial–mesenchymal transition state. Primary PMP cell cultures were successfully maintained and demonstrated marker expressions similar to those seen in in vivo tissues. These early characterisation studies demonstrate similarities between PMP and colorectal adenocarcinoma, but also reveal a specific cadherin phenotype that may characterise the distinct non-metastasising behaviour of PMP, and form the basis for future mechanistic and therapy-targeting research.
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Affiliation(s)
- R Bibi
- Cancer Research UK Immunology Group, Paterson Institute for Cancer Research, Manchester, UK
| | - N Pranesh
- Cancer Research UK Immunology Group, Paterson Institute for Cancer Research, Manchester, UK
- Department of Surgery, Christie Hospital NHS Trust, Manchester, UK
| | - M P Saunders
- Department of Clinical Oncology, Christie Hospital NHS Trust, Manchester, UK
| | - M S Wilson
- Department of Surgery, Christie Hospital NHS Trust, Manchester, UK
| | - S T O'Dwyer
- Department of Surgery, Christie Hospital NHS Trust, Manchester, UK
| | - P L Stern
- Cancer Research UK Immunology Group, Paterson Institute for Cancer Research, Manchester, UK
| | - A G Renehan
- Department of Surgery, Christie Hospital NHS Trust, Manchester, UK
- Department of Surgery, Christie Hospital NHS Trust, Wilmslow Road, Manchester
M20 4BX, UK; E-mail:
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Abstract
Vascular dissection and osteogenesis imperfecta are very rarely associated. The authors report a unique case of basilar artery dissection and discuss the diagnostic imaging work-up.
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Affiliation(s)
- X Coutouly
- Département de Radiologie Adultes, Hôpital Trousseau, CHU Tours, 37044 Tours cedex, France.
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19
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Vax VV, Bibi R, Diaz-Cano S, Gueorguiev M, Kola B, Borboli N, Bressac-de Paillerets B, Walker GJ, Dedov II, Grossman AB, Korbonits M. Activating point mutations in cyclin-dependent kinase 4 are not seen in sporadic pituitary adenomas, insulinomas or Leydig cell tumours. J Endocrinol 2003; 178:301-10. [PMID: 12904177 DOI: 10.1677/joe.0.1780301] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Cell cycle dysregulation is one of the defining features of cancer. Cyclin-dependent kinase 4 (CDK4), together with its regulatory subunit cyclin D, governs cell cycle progression through the G1 phase. Cyclin-dependent kinase inhibitors, including p16(INK4A) (encoded by CDKN2A), in turn regulate CDK4. In particular, dysregulation of the p16/CDK4/cyclin D complex has been established in a variety of types of human tumours. Dominant activating mutations affecting codon 24 of the CDK4 gene (replacement of Arg24 by Cys or His) render CDK4 insensitive to p16(INK4) inhibition and are responsible for melanoma susceptibility in some kindreds. However, 'knock-in' mice homozygous for the CDK4(R24C) mutation were noted to develop multiple neoplasia, most commonly including endocrine tumours: pituitary adenomas, insulinomas and Leydig cell testicular tumours. We therefore speculated that sporadic human endocrine tumours might also harbour such mutations. The aim of the current study was to analyze the CDK4 gene for the two characterized activating mutations, R24C and R24H, in sporadic human pituitary adenomas, insulinomas and Leydig cell tumours. We used DNA extracted from 61 pituitary adenomas, and paired tumorous and neighboring normal genomic DNA extracted from 14 insulinoma and 6 Leydig cell tumour samples. Genomic DNA from patients with familial melanoma harbouring the R24C or the R24H mutations served as positive controls. All samples were subjected to PCR, mutation-specific restriction digests and/or sequencing. Both methodologies failed to detect mutations at these two sites in any of the sporadic endocrine tumours including pituitary adenomas, benign or malignant insulinomas or Leydig cell tumours, while the positive controls showed the expected heterozygote patterns. Protein expression of CDK4 was demonstrated by immunohistochemistry and Western blotting in pituitary and pancreatic samples. These data suggest that the changes in the regulatory 'hot-spot' on the CDK4 gene, causing various endocrine tumours in CDK4(R24C/R24C )mice, are not a major factor in sporadic pituitary, insulin beta-cell or Leydig cell tumorigenesis.
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Affiliation(s)
- V V Vax
- Department of Endocrinology, St Bartholomew's Hospital, London EC1A 7BE, UK.
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Pecorelli I, Galarini R, Bibi R, Floridi A, Casciarri E, Floridi A. Simultaneous determination of 13 quinolones from feeds using accelerated solvent extraction and liquid chromatography. Anal Chim Acta 2003. [DOI: 10.1016/s0003-2670(02)01401-0] [Citation(s) in RCA: 86] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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Bamouni A, Cottier JP, Gallas S, Brunereau L, Bibi R, Vinikoff-Sonier CB, Rouleau P, Herbreteau D. [Quid? Bone hydatidosis]. J Radiol 2001; 82:1743-5. [PMID: 11917644] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 02/24/2023]
Affiliation(s)
- A Bamouni
- Service de neuroradiologie, CHU Bretonneau, 2, bd Tonnellé, 37044 Tours
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Abstract
IgD expression has been shown to be downmodulated upon mitogenic or antigenic activation of B cells. To investigate whether this decrease is of functional significance we studied a mouse strain that expresses transgenic IgD on all B cells. The rearranged gene encoding the heavy chain of this IgD requires endogenous gene rearrangement before it can be expressed; therefore, normal B cell development is not affected. As a result, both transgenic IgD and endogenous IgM and IgD are expressed on all peripheral B cells. We show that the presence of extraneous IgD does not affect normal B cell activation by polyclonal stimulators, nor does it affect the primary IgM or IgG responses to TI or TD antigens. However, the secondary memory response is significantly diminished. The decrease is not attributable to a defective generation of memory B cells; instead the activation of memory cells appears to be compromised. Since the depressed response can be overcome by prior aggregation of the transgenic IgD with allotype-specific anti-IgD antibodies, it appears that persistence of the transgenic IgD on memory cells may influence their ability to be activated. Thus, the decrease in IgD expression on normal B cells after activation may be necessary for optimal activation of memory cells.
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Affiliation(s)
- D Yuan
- Laboratory of Molecular Pathology, Department of Pathology, University of Texas Southwestern Medical Center, Dallas, Texas 75235, USA.
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Mathew R, Kalyani J, Bibi R, Mallika M. Prevalence of bacterial vaginosis in antenatal women. INDIAN J PATHOL MICR 2001; 44:113-6. [PMID: 11883123] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2023] Open
Abstract
Bacterial vaginosis is an established risk factor in pregnant women for premature rupture of membranes and preterm delivery. This study was carried out to find out the prevalence of Bacterial Vaginosis (BV) in antenatal women with vaginal discharge and the effect of treatment with Metronidazole gel on pregnancy outcome. One hundred and fifty symptomatic and fifty asymptomatic women in second trimester of pregnancy in the age group of 20-30 years were included in the study. Gram stained smears of vaginal discharge were examined for evidence of BV with a scoring system by Nugent et al and was found to be positive in 38.5% in symptomatic antenatal women. Intravaginal metronidazole gel application was found to be an effective therapeutic option. Incidence of preterm labour was more in untreated cases.
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Affiliation(s)
- R Mathew
- Department of Microbiology and Obsterics and Gynaecology, Sri Ramachandra Medical College and Research Institute (Deemed University), Porur, Chennai
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Abstract
BACKGROUND AND PURPOSE Hemodynamics of cerebral vasospasm after subarachnoid hemorrhage remain unclear, and the discrepancy between ultrasonographic or angiographic evidence of arterial narrowing and neurological ischemic deficit is still debated. Most blood flow studies have been involved with large arteries, and thus, very little is known regarding the hemodynamic behavior of small perforating vessels. Patients with symptomatic vasospasm, however, often present with neurological signs suggesting involvement of deep-sited areas of the brain supplied by perforating arteries. METHODS A pulsatile pump was set to provide an outflow of 350 mL/min through a 10-mm-diameter C-flex tube at a perfusion pressure of 130/80 mm Hg. The perfusion fluid used was prepared to approximate blood viscosity. Perforating arteries were simulated by a 1-mm tube connected to the parent tube at a 90 degrees angle. Cylindrical stenotic devices of decreasing diameters were then introduced into the parent tube at the level of the aperture of the secondary tube and 1.5 diameters upstream of it. Velocity profiles both proximal and distal to the stenosis in the parent tube were obtained with a newly developed ultrasonographic flowmeter that allows for high spatial resolution. RESULTS Increasing stenosis resulted in decreased outflow in the main tube, although it was significant only with severe stenosis. Whenever the simulated stenosis was placed upstream of the secondary tube, flow reduction was associated with a progressive change in the velocity profile, which gradually changed from laminar conditions to a jet stream limited to the center of the lumen. Further diameter reduction was responsible for the occurrence of flow separation with retrograde flow velocities in the periphery of the lumen. In the secondary tube, flow reduction was much more pronounced and began at a lesser degree of stenosis. Increasing fluid viscosity and decreasing perfusion pressure enhanced flow separation and prominently affected the outflow in the secondary tube. Conversely, whenever the simulated stenosis involved the branching area of the secondary tube, there was a slightly progressive decrease in the relative flow in the main tube as the stenosis became tighter. When the stenosis equaled the diameter of the secondary tube, the relative contribution of the secondary tube increased markedly at the expense of the main tube outflow. CONCLUSIONS The present results show that local cerebral vasospasm induces changes in postvasospastic velocity profile affecting the shear rate and may eventually lead to flow separation. This phenomenon may, in turn, result in a venturi-like effect over the aperture of perforating arteries branching out of the postvasospastic portion of the affected parent artery. These alterations of cerebral hemodynamics may account for at least part of the vasospasm symptomatology, especially in the vertebrobasilar system, where vasospasm is commonly focal rather than diffuse. Furthermore, these changes proved to be affected significantly by manipulations of pressure and viscosity, supporting the use of hyperdynamic therapy in the management of cerebral vasospasm.
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Affiliation(s)
- J F Soustiel
- Department of Neurosurgery, Rambam (Maimonides) Medical Center, Faculty of Medicine, The Technion-Israel Institute of Technology, Haifa, Israel.
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Saint-Georges F, Bibi R, Roy F, Brunnereau L, Rouleau P, Diot P, Lemarie E. [An unusual thoracic opacity]. Rev Mal Respir 2000; 17:1115-6. [PMID: 11217511] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/19/2023]
Abstract
We report a case of a paraspinal meningocele in a 37-year-old man with no other clinical manifestation. The diagnosis was established on the basis of the computed tomography and magnetic resonance imaging features.
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Affiliation(s)
- F Saint-Georges
- Service de Pneumologie, CHU Bretonneau, BD Tonnellé, 37044 Tours
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Peoples LL, Gee F, Bibi R, West MO. Phasic firing time locked to cocaine self-infusion and locomotion: dissociable firing patterns of single nucleus accumbens neurons in the rat. J Neurosci 1998; 18:7588-98. [PMID: 9736676 PMCID: PMC6793254] [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] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/12/1998] [Revised: 07/02/1998] [Accepted: 07/07/1998] [Indexed: 02/08/2023] Open
Abstract
The activity of single nucleus accumbens (NAcc) neurons of rats was extracellularly recorded during intravenous cocaine self-administration sessions (0.7 mg/kg per infusion, fixed ratio 1). We reported previously that NAcc neurons showed a change, usually a decrease, in firing rate during the first 1 min after the cocaine-reinforced lever press. This postpress change was followed by a progressive reversal of that change, which began within the first 2 min after the press and was not complete until the last 1 min before the next lever press (termed the change + progressive reversal firing pattern). In the present study we documented a regular pattern of locomotion that occurred in parallel with the change + progressive reversal firing pattern. This observation suggested that discharges time locked to locomotion may determine the change + progressive reversal firing pattern. However, 55% of the neurons failed to show firing time locked to locomotion that could have contributed to the change + progressive reversal firing pattern. Moreover, for all neurons, the change + progressive reversal firing pattern was apparent even if the calculation of firing rate excluded all periods of locomotion. The present data showed that the change + progressive reversal firing pattern is not solely attributable to phasic changes in firing time locked to the execution of locomotion. The change + progressive reversal firing pattern closely mirrors changes in drug level and dopamine overflow observed by previous researchers and may thus be a component of the neurophysiological mechanism by which drug level regulates drug-taking behavior during an ongoing self-administration session.
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Affiliation(s)
- L L Peoples
- Department of Psychology, Rutgers University, New Brunswick, New Jersey 08903, USA
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Magni C, Mocaer J, Yapo P, Bibi R, Cazeneuve N, Ferquel C, Agnard P, Friocourt P. [Deep cerebral venous thrombosis]. J Neuroradiol 1998; 25:116-22. [PMID: 9763786] [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] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
Deep cerebral venous system thrombosis is uncommon and is usually encountered in children, generally in the neonatal period. In adults, this pathology is even more exceptional. We report two cases in adults. Deep cerebral venous system thrombosis mainly affects women taking oral contraception. The most common clinical pattern combines headaches and confusion. A comatose state is rather exceptional. This pathology, formerly considered to have poor prognosis, has benefited from diagnostic and therapeutic progress. Favorable outcome has been achieved in several recent cases, as one of ours, without after-effects. Diagnosis, often suggested by the CT-scan, is based on MRI associated with MRA. Thrombus formation is easily diagnosed by MRI at the subacute stage, but far less easily at the acute and chronic stages as the low signal is identical to the normal flow void. MRA, in phase contrast or time of flight sequences, is highly interesting at the acute phase. In case of doubt, an angiography can be applied. Therapy is based on heparin. The contribution of local infusion of thrombolytic agents, recently used with success, remains to be determined.
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Affiliation(s)
- C Magni
- Service de Neuroradiologie, CHR Orléans
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28
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Wargnier O, Roger R, Bibi R, de Muret A, Alison D. [MRI aspect of disk tumor infiltration]. J Radiol 1997; 78:1175-7. [PMID: 9499958] [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: 02/06/2023]
Abstract
We report a case of tumor infiltration into an intervertebral disk imaged at MR. The MRI appearance of a tumor infiltration into an intervertebral disk is the same as a spondylodiscitis: loss of the internuclear cleft, increased signal intensity of the disk on T2 weighted imaging. Other metastatic infiltration in vertebrae and a primitive tumor suggest the diagnosis. It is confirmed by percutaneous biopsy.
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Affiliation(s)
- O Wargnier
- Service de Radiologie, Hôpital Trousseau, Tours
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29
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Abstract
Some factors influencing the detection of human cytomegalovirus (HCMV) in urine were investigated employing 2 enzyme-linked immunosorbent assays (ELISAs); one utilised anti-CMV DNA polymerase while the other anti-CMV mouse monoclonals as the detecting antibodies. The use of anti-CMV DNA polymerase was found to be superior in detecting HCMV in both urine and tissue culture fluids than anti-CMV monoclonals. Furthermore, alkaline phosphatase conjugates produced much lower background than did peroxidase conjugates. In reconstruction experiments, the extremes of pH in the urine clearly had an adverse effect on the detection rate of extracellular virus. pH correction of urines to neutrality improved the detection rate considerably. On the other hand, pH correction had little effect on the detection rate of intracellular HCMV in urine, although it was improved when specimens were subjected to repeated cycles of freeze-thawing, ultrasonication, and storage at 4 degrees C. It was concluded that, in addition to the factors investigated which all appear to affect virus detection rate, there may well be additional factors that interfere with CMV detection in the urine by ELISA particularly with intracellular virus.
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Abstract
Chlorpromazine administered to Sprague-Dawley rats 30 minutes prior to elevation of McFarlane back flaps and continued 14 days thereafter resulted in near complete flap survival, compared with 48 percent necrosis in control animals. Chlorpromazine demonstrates a wide variety of actions that appear to meet all presently known requirements for flap preservation.
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