scholarly journals Identification and expression of gonadotrophin hormones in gouramy (Osphronemous gouramy, Lacepède, 1801) under photoperiod manipulations

2020 ◽  
Vol 21 (4) ◽  
Author(s):  
Norman Prayogo ◽  
Asrul Siregar ◽  
Purnama Sukardi ◽  
Yasumasa Bessho
Keyword(s):  
Gene Expression ◽  
Environmental Factors ◽  
Reproductive Performance ◽  
Real Time Pcr ◽  
Growth And Development ◽  
Fish Reproduction ◽  
Fish Samples ◽  
Gonad Growth ◽  
And Control ◽  
Long Photoperiod

Abstract. Prayogo NA, Siregar AS, Sukardi P, Bessho Y. 2020. Identification and expression of gonadotrophin hormones in gouramy (Osphronemoous gouramy, Lacepède, 1801) under photoperiod manipulations. Biodiversitas 21: 1365-1372. The environment influences fish reproduction. One of the influential environmental factors is photoperiod that regulates the production of hormones for gonad growth and development, gametogenesis, then the reproductive cycle. This research was conducted to determine the effect of photoperiod on the reproductive performance of gouramy with different photoperiod treatments. The design of this study was four photoperiod treatments consisting of 14L: 10D, 16L: 8D and 18L: 6D and controls. Fish samples were divided into 4 aquariums consisting of nine fish and repetition was conducted on each. Fish were kept under photoperiod treatment for 16 weeks. The observed variable was pituitary activity. Pituitary activity was evaluated by measuring the expression of FSH and LH genes using Real Time PCR. The results showed that gouramy had FSH and LH genes with 483 bp and 506 bp. FSH and LH gene expression increased with long photoperiod exposure (P <0.05). These findings indicate that photoperiods regulate the reproduction of gouramy through the HPG axis and control the production of the hormone Gonadotropin.

Gene Expression Profiling in Brodmann's Area 46 from Subjects with Schizophrenia

2007 ◽  
Vol 41 (4) ◽  
pp. 308-320 ◽  
Author(s):  
Brian Dean ◽  
Dahlia Keriakous ◽  
Elizabeth Scarr ◽  
Elizabeth A. Thomas
Keyword(s):  
Gene Expression ◽  
Real Time ◽  
Real Time Pcr ◽  
Altered Expression ◽  
Symptom Profile ◽  
Long Duration ◽  
Dorsolateral Prefrontal ◽  
Polymerase Chain ◽  
Altered Gene ◽  
And Control

Objective: To identify altered gene expression in the dorsolateral prefrontal cortex obtained after death from subjects with schizophrenia. Method: Restriction fragment differential display (RFDD) was used to measure levels of mRNA in Brodmann area (BA) 46 from schizophrenia and control subjects. Findings on specific mRNA identified with RFDD were further investigated using real-time polymerase chain reaction (real-time PCR), PCR and western blotting. Results: Levels of mRNA for 63 of approximately 12 500 genes differed in BA 46 in schizophrenia. Subsequent real-time PCR has shown that mRNA for muscleblind protein 1 ( MBNL1) and protocadherin 17 ( PCDH17) are increased in BA 46 from subjects with schizophrenia of short, but not long, duration. Altered levels of mRNA for neither gene were present in BA 9 from subjects with schizophrenia or in either cortical area from subjects with bipolar 1 disorder. By contrast, both RFDD and real-time PCR failed to show altered expression of the schizophrenia candidate gene disrupted in schizophrenia 1 ( DISC1) BA46 from any diagnostic cohort. Conclusion: The present study has identified genes that are differentially expressed in BA 46 in schizophrenia. Initial studies have shown that there is a need for a careful validation of genes shown to be affected in schizophrenia using high-throughput technologies. In addition the present study has shown that gene expression may vary considerably depending on the duration of schizophrenia. This raises the hypothesis that changing gene expression may be underlying the change in symptom profile that occurs with disease progression in some subjects with schizophrenia.

Endometrial gene expression during early pregnancy differs between fertile and subfertile dairy cow strains

2012 ◽  
Vol 44 (1) ◽  
pp. 47-58 ◽  
Author(s):  
Caroline G. Walker ◽  
Mathew D. Littlejohn ◽  
Murray D. Mitchell ◽  
John R. Roche ◽  
Susanne Meier
Keyword(s):  
Gene Expression ◽  
Microarray Data ◽  
Reproductive Performance ◽  
Dairy Cow ◽  
Growth And Development ◽  
Expression Patterns ◽  
P Value ◽  
Uterine Environment ◽  
Reproductive Processes ◽  
Lactating Dairy Cattle

A receptive uterine environment is a key component in determining a successful reproductive outcome. We tested the hypothesis that endometrial gene expression patterns differ in fertile and subfertile dairy cow strains. Twelve lactating dairy cattle of strains characterized as having fertile ( n = 6) and subfertile ( n = 6) phenotypes underwent embryo transfer on day 7 of the reproductive cycle. Caruncular and intercaruncular endometrial tissue was obtained at day 17 of pregnancy, and microarrays used to characterize transcriptional profiles. Statistical analysis of microarray data at day 17 of pregnancy revealed 482 and 1,021 differentially expressed transcripts ( P value < 0.05) between fertile and subfertile dairy cow strains in intercaruncular and caruncular tissue, respectively. Functional analysis revealed enrichment for several pathways involved in key reproductive processes, including the immune response to pregnancy, luteolysis, and support of embryo growth and development, and in particular, regulation of histotroph composition. Genes implicated in the process of immune tolerance to the embryo were downregulated in subfertile cows, as were genes involved in preventing luteolysis and genes that promote embryo growth and development. This study provides strong evidence that the endometrial gene expression profile may contribute to the inferior reproductive performance of the subfertile dairy cow strain.

scholarly journals Impact of Fibrin on the Chondrogenic Avocado Soybean Unsaponifiables on Poly (Lactic-co-Glycolic) Acid Scaffold

2020 ◽  
Vol 11 (4) ◽  
pp. 11525-11534
Keyword(s):  
Gene Expression ◽  
Real Time ◽  
Real Time Pcr ◽  
Glycolic Acid ◽  
Cartilage Tissue Engineering ◽  
Type Ii Collagen ◽  
Cartilage Tissue ◽  
Control Group ◽  
Differentiation Markers ◽  
And Control

Synthetic and naturally derived-biodegradable polymers have been applied extensively for scaffold fabrication for cartilage tissue engineering. Human adipose-derived stem cells (hADSCs) seeded in poly (lactic-co-glycolic) acid (PLGA) and PLGA/fibrin scaffolds and cultured in chondrogenic media containing Soybean Unsaponifiables (ASU). All constructs were cultured for 14 days. Cell viability was measured by MTT assay. Chondrogenic differentiation markers, including type II collagen (Coll II), Aggrecan (AGG), and SOX9, were detected by real-time PCR. Hypertrophic and Fibrous differentiation was also analyzed using gene expression type X (Coll X) and Ι (Coll Ι) collagen. The MTT results on the 14th day showed that the viability of hADSCs in the PLGA group was higher than the PLGAL/Fibrin group, but it was not significant. Real-time PCR results demonstrated that SOX9, Coll II, and AGG gene expression in the PLGA and PLGA/Fibrin groups are higher than the control group. The real-time PCR results indicated that Coll X in the PLGA/Fibrin group is lower than the PLGA and control groups. Also, Coll I gene expression in the PLGA group was higher in contrast with the control group. Administrating fibrin with a PLGA scaffold can induce chondrogenesis in hADSCs on chondrogenic media containing ASU.

Respon Morfologis dan Ekspresi Gen Aquaporin pada Padi IR 64 yang Mengalami Cekaman Kekeringan pada Fase Reproduktif (Morphological Responses and Aquaporin Gene Expression in Rice IR64 under Drought Stress at the Reproductive Stage)

2018 ◽  
Vol 7 (2) ◽  
Author(s):  
Made Pharmawati ◽  
Ni Nyoman Wirasiti ◽  
Luh Putu Wrasiati
Keyword(s):  
Gene Expression ◽  
Drought Stress ◽  
Real Time ◽  
Real Time Pcr ◽  
Control Plant ◽  
Reproductive Stage ◽  
Limiting Factors ◽  
Rice Grain ◽  
Aquaporin Gene ◽  
Peg Treatment

Abstrak Cekaman kekeringan merupakan faktor pembatas penting bagi pertumbuhan dan produktivitas tanaman termasuk padi.      Penelitian ini bertujuan menganalisis respon padi IR64 terhadap cekaman kekeringan dengan pemberian polietilen glikol (PEG) pada fase reproduktif.  Penelitian juga bertujuan menganalisis ekspresi gen aquaporin akibat cekaman kekeringan.  Bibit padi ditanam dalam pot dan perlakuan PEG dengan konsentrasi 108g/L (-0.25MPa) dan 178g/L (-0.52 MPa) diberikan saat munculnya panikula. Perlakuan diberikan selama 2 minggu, kemudian tanaman disiram kembali.  Ekspresi gen diamati pada akhir perlakuan dengan semi kuantitatif real time PCR.  Ekstraksi RNA menggunakan RNeasy plant mini kit, sedangkan sintesis cDNA menggunakan Transcriptor First Strand cDNA Kit.  Hasil penelitian menunjukkan bahwa jumlah malai dan berat total malai berkurang akibat cekaman kekeringan.  Persentase gabah kosong mencapai 84,6% pada perlakuan PEG-0,52 MPa, sedangkan pada perlakuan PEG -0,25 MPa persentase gabah kosong sebesar 67,8%.  Pada kontrol persentase gabah kosong adalah 10,3%.  Ekspresi gen OsPIP2;7 sedikit menurun pada perlakuan PEG -0,52 MPa.Kata kunci: ekspresi gen, IR64, kekeringan, padi, PEG  Abstract Drought stress is one of the limiting factors of plant growth and productivity including rice.  The aim of this study was to analyze responses of IR64 rice to polyethylene glycol (PEG)-induced-drought stress at the reproductive stage.  This study also aimed to analyze the expression of aquaporin under drought stress.  Rice seedlings were grown in pot system and PEG treatment at concentration of -0.25MPa (108g/L) and -0.52 MPa (178g/L) were given when the panicles arose.  Treatments were conducted for 2 weeks, after that the plants were rewatered.  Gene expression was evaluated at the end of PEG treatment using semi quantitative real time PCR. RNA was extracted using RNeasy plant mini kit, while cDNA synthesis was done using Transcriptor First Strand cDNA Kit.  The results showed that the number and weight of rice ear were less in plant treated with PEG than in control.  The percentage of empty rice grain reached 84.6% at PEG -0.52 MPa, while at PEG -0.25 MPa the percentage of empty grain was 67.8%.  In control plant, the percentage of empty grain was 10.3%.  Drought stress did not alter the expression of OsPIP2;7.  Keywords: drought, gene expression, IR64, PEG, rice

UBE2L6 is Involved in Cisplatin Resistance by Regulating the Transcription of ABCB6

2020 ◽  
Vol 20 (12) ◽  
pp. 1487-1496 ◽  
Author(s):  
Midori Murakami ◽  
Hiroto Izumi ◽  
Tomoko Kurita ◽  
Chiho Koi ◽  
Yasuo Morimoto ◽  
...  
Keyword(s):  
Gene Expression ◽  
Promoter Activity ◽  
Anticancer Agent ◽  
Cisplatin Resistance ◽  
Expression Profiles ◽  
Gene Expression Profiles ◽  
Molecular Target ◽  
Transcriptional Level ◽  
And Control ◽  
Resistant Cells

Background: Cisplatin is an important anticancer agent in cancer chemotherapy, but when resistant cells appear, treatment becomes difficult, and the prognosis is poor. Objective: In this study, we investigated the gene expression profile in cisplatin sensitive and resistant cells, and identified the genes involved in cisplatin resistance. Methods: Comparison of gene expression profiles revealed that UBE2L6 mRNA is highly expressed in resistant cells. To elucidate whether UBE2L6 is involved in the acquisition of cisplatin resistance, UBE2L6- overexpressing cells established from cisplatin-sensitive cells and UBE2L6-silenced cells developed from cisplatin- resistant cells were generated, and the sensitivity of cisplatin was examined. Results: The sensitivity of the UBE2L6-overexpressing cells did not change compared with the control cells, but the UBE2L6-silenced cells were sensitized to cisplatin. To elucidate the mechanism of UBE2L6 in cisplatin resistance, we compared the gene expression profiles of UBE2L6-silenced cells and control cells and found that the level of ABCB6 mRNA involved in cisplatin resistance was decreased. Moreover, ABCB6 promoter activity was partially suppressed in UBE2L6-silenced cells. Conclusion: These results suggest that cisplatin-resistant cells have upregulated UBE2L6 expression and contribute to cisplatin resistance by regulating ABCB6 expression at the transcriptional level. UBE2L6 might be a molecular target that overcomes cisplatin resistance.

scholarly journals Effects of Intrauterine Infusion of a Chitosan Solution on Recovery and Subsequent Reproductive Performance of Early Postpartum Dairy Cows with Endometritis: A Pilot Field Trial

Animals ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 197
Author(s):  
Hiroaki Okawa ◽  
Missaka M.P. Wijayagunawardane ◽  
Peter L.A.M. Vos ◽  
Osamu Yamato ◽  
Masayasu Taniguchi ◽  
...  
Keyword(s):  
Dairy Cows ◽  
Reproductive Performance ◽  
Polymorphonuclear Leukocytes ◽  
Prostaglandin F2α ◽  
Chitosan Solution ◽  
Control Group ◽  
Control Groups ◽  
Early Postpartum Period ◽  
Early Postpartum ◽  
And Control

This study investigated the efficacy of intrauterine infusion of a chitosan solution (CHT) on uterine recovery in early postpartum dairy cows with or without endometritis, and their subsequent reproductive performance. In Experiment 1, cows with endometritis at 3 weeks postpartum were administered CHT (n = 5) and prostaglandin F2α (PGF2α) (n = 4). Untreated cows (n = 7) served as the control group. In Experiment 2, 18 cows with a normally recovered uterus at the fresh cow check (mean, 35 days postpartum) were assigned to the CHT (n = 10) and control (n = 8) groups, and intrauterine infusion was conducted in the CHT group. Overall, in Experiment 1, the percentage of polymorphonuclear leukocytes significantly declined in the CHT group (32.3 ± 10.2 to 5.5 ± 2.4, p < 0.05) from week 3 to week 5, but no decline occurred in the PGF2α and control groups. In Experiment 2, the CHT and control groups showed no significant differences in reproductive parameters, suggesting the absence of adverse effects of CHT on fertility. These results suggest that intrauterine infusion of CHT in the early postpartum period effectively accelerates uterine recovery from endometritis and might be a suitable replacement for PGF2α administration.

Sign in / Sign up

Export Citation Format

Share Document