scholarly journals Survival Rate and Ultrastructure of Vitrified Bovine in vitro and in vivo Developed Embryos

1994 ◽  
Vol 35 (4) ◽  
pp. 417-426
Author(s):  
U. Darvelid ◽  
H. Gustafsson ◽  
M. Shamsuddin ◽  
B. Larsson ◽  
H. Rodriguez Martinez
Keyword(s):  
Survival Rate

scholarly journals The Effectiveness of Candidate Probiotic Bacteria to Control Vibriosis Disease

2017 ◽  
Vol 5 (2) ◽  
pp. 1
Author(s):  
Mulyati Mulyati ◽  
Suryati Suryati ◽  
Irfani Baga
Keyword(s):  
Survival Rate ◽  
Sea Water ◽  
Challenge Test ◽  
Probiotic Bacteria ◽  
Pathogenicity Test ◽  
Inhibitory Ability ◽  
Significant Difference ◽  
Portunid Crab

The study aims to isolate, characterize, and examine probiotic bacteria's inhibitory ability against Vibrio harveyi bacteria, both in-vitro and in vivo. Methods used in the study consist of 1) An Isolation of Candidate Probiotic Bacteria, 2) An Antagonistic Test of Candidate Probiotic Bacteria in vitro, 3) An Identification of Bacteria, 4) A Pathogenicity Test of Candidate Probiotic Bacteria, 5) An Antagonistic Test of Candidate Probiotic Bacteria against V. harveyi in vivo. According to the isolation of candidate probiotic bacteria, there are 18 isolated candidate probiotic. After being tested for its inhibitory ability in vitro, there are 8 isolates with zone of inhibition as follows: isolate MM 7 from intestine (22 mm), isolate MM 6 from intestine (12 mm), isolate MM 10 from sea water (10 mm), isolate MM 5 from intestine (9 mm), isolate MM 4 from intestine (8 mm), isolate MM 3 from intestine (7 mm), isolate MM 2.2 from intestine (7 mm), isolate MM 2.1 from intestine (7 mm). Eight genera of the candidate probiotic bacteria is derived from Portunid crab, they are Staphylococcus, Streptococcus, bacillus, vibrio, Alcaligenes, Lactobacillus, micrococcus. Before proceeding the V. harveyi bacterial challenge test in vivo, three potential isolates consisting of MM6, MM7 and MM10 as the probiotic bacteria are pathogenicity-tested against V. harveyi. The survival rate of Portunid crab on pathogenicity test using MM6, MM7 and MM10 generates 91.11-100%, while the control generates 100% survival rate. Variance analysis result through post-hoc Tukey's Honest Significant Difference (HSD) test at 95% confidence interval indicates that isolate MM7 and MM10 are significantly able to increase hatchling Portunid crab's survival rate.

scholarly journals Bioactive Compounds from Herbal Medicine Targeting Multiple Myeloma

2021 ◽  
Vol 11 (10) ◽  
pp. 4451
Author(s):  
Coralia Cotoraci ◽  
Alina Ciceu ◽  
Alciona Sasu ◽  
Eftimie Miutescu ◽  
Anca Hermenean
Keyword(s):  
Multiple Myeloma ◽  
Survival Rate ◽  
Plasma Cells ◽  
Inhibition Of Proliferation ◽  
In Vivo Experiments ◽  
Clonal Proliferation ◽  
Hematological Cancers ◽  
Monoclonal Proteins

Multiple myeloma (MM) is one of the most widespread hematological cancers. It is characterized by a clonal proliferation of malignant plasma cells in the bone marrow and by the overproduction of monoclonal proteins. In recent years, the survival rate of patients with multiple myeloma has increased significantly due to the use of transplanted stem cells and of the new therapeutic agents that have significantly increased the survival rate, but it still cannot be completely cured and therefore the development of new therapeutic products is needed. Moreover, many patients have various side effects and face the development of drug resistance to current therapies. The purpose of this review is to highlight the bioactive active compounds (flavonoids) and herbal extracts which target dysregulated signaling pathway in MM, assessed by in vitro and in vivo experiments or clinical studies, in order to explore their healing potential targeting multiple myeloma. Mechanistically, they demonstrated the ability to promote cell cycle blockage and apoptosis or autophagy in cancer cells, as well as inhibition of proliferation/migration/tumor progression, inhibition of angiogenesis in the tumor vascular network. Current research provides valuable new information about the ability of flavonoids to enhance the apoptotic effects of antineoplastic drugs, thus providing viable therapeutic options based on combining conventional and non-conventional therapies in MM therapeutic protocols.

scholarly journals In Vitro Synergy and In Vivo Activity of Tigecycline-Ciprofloxacin Combination Therapy against Vibrio vulnificus Sepsis

2019 ◽  
Vol 63 (10) ◽  
Author(s):  
Seong Eun Kim ◽  
Hee Kyung Kim ◽  
Su-Mi Choi ◽  
Yohan Yu ◽  
Uh Jin Kim ◽  
...  
Keyword(s):  
Survival Rate ◽  
Mortality Rate ◽  
Combination Therapy ◽  
Combination Treatment ◽  
Vibrio Vulnificus ◽  
Antibiotic Regimen ◽  
Content Type ◽  
Time Kill

ABSTRACT The mortality rate associated with Vibrio vulnificus sepsis remains high. An in vitro time-kill assay revealed synergism between tigecycline and ciprofloxacin. The survival rate was significantly higher in mice treated with tigecycline plus ciprofloxacin than in mice treated with cefotaxime plus minocycline. Thus, combination treatment with tigecycline-ciprofloxacin may be an effective novel antibiotic regimen for V. vulnificus sepsis.

scholarly journals Antimicrobial Peptides Epinecidin-1 and Beta-Defesin-3 Are Effective against a Broad Spectrum of Antibiotic-Resistant Bacterial Isolates and Increase Survival Rate in Experimental Sepsis

Antibiotics ◽  
2022 ◽  
Vol 11 (1) ◽  
pp. 76
Author(s):  
Albert Bolatchiev
Keyword(s):  
Antibacterial Activity ◽  
Survival Rate ◽  
Antimicrobial Peptides ◽  
Lethal Dose ◽  
Experimental Models ◽  
Experimental Sepsis ◽  
Epinephelus Coioides ◽  
Sterile Saline

The antimicrobial peptides human Beta-defensin-3 (hBD-3) and Epinecidin-1 (Epi-1; by Epinephelus coioides) could be a promising tool to develop novel antibacterials to combat antibiotic resistance. The antibacterial activity of Epi-1 + vancomycin against methicillin-resistant Staphylococcus aureus (22 isolates) and Epi-1 + hBD-3 against carbapenem-resistant isolates of Klebsiella pneumoniae (n = 23), Klebsiella aerogenes (n = 17), Acinetobacter baumannii (n = 9), and Pseudomonas aeruginosa (n = 13) was studied in vitro. To evaluate the in vivo efficacy of hBD-3 and Epi-1, ICR (CD-1) mice were injected intraperitoneally with a lethal dose of K. pneumoniae or P. aeruginosa. The animals received a single injection of either sterile saline, hBD-3 monotherapy, meropenem monotherapy, hBD-3 + meropenem, or hBD-3 + Epi-1. Studied peptides showed antibacterial activity in vitro against all studied clinical isolates in a concentration of 2 to 32 mg/L. In both experimental models of murine sepsis, an increase in survival rate was seen with hBD-3 monotherapy, hBD-3 + meropenem, and hBD-3 + Epi-1. For K. pneumoniae-sepsis, hBD-3 was shown to be a promising option in overcoming the resistance of Klebsiella spp. to carbapenems, though more research is needed. In the P. aeruginosa-sepsis model, the addition of Epi-1 to hBD-3 was found to have a slightly reduced mortality rate compared to hBD-3 monotherapy.

Developmental competence in vitro and in vivo of cryopreserved, hatched blastocysts from the dromedary camel (Camelus dromedarius)

2004 ◽  
Vol 16 (6) ◽  
pp. 605 ◽  
Author(s):  
J. A. Skidmore ◽  
M. Billah ◽  
N. M. Loskutoff
Keyword(s):  
Survival Rate ◽  
Fetal Calf Serum ◽  
Calf Serum ◽  
Sodium Lactate ◽  
Developmental Competence ◽  
Penicillin G ◽  
Dromedary Camel ◽  
Dromedary Camels

The present paper describes experiments designed to investigate methods for cryopreserving embryos from dromedary camels. Because preliminary studies had shown ethanediol to be the best cryoprotectant to use for camel embryos, the current experiments were performed to determine the minimum exposure time to 1.5 m ethanediol required to achieve cryoprotection. The uteri of 30 donor camels were flushed non-surgically 8 days after mating. Embryos were recovered and 158 were assigned to one of three groups, which were exposed to 1.5 m ethanediol for either 10 min (n = 67), 5 min (n = 51) or 1 min (n = 40). Embryos were subsequently thawed and rehydrated by expelling either directly into holding medium (HM; HEPES-buffered Tyrode's medium containing sodium lactate and 3 mg mL−1 bovine serum albumin, 10% fetal calf serum, 100 IU mL−1 penicillin G, 100 μg mL−1 streptomycin and 25 μg mL−1 amphotercin B) or initially into HM containing 0.2 m sucrose for 5 or 10 min. The survival rate of all embryos immediately post-thawing, as judged by the morphological appearance of the embryos, was high (91%), but was greatly reduced after 2 h culture (59%). Ninety-two embryos were transferred to recipient camels resulting in 18 viable fetuses (1 min ethanediol exposure, n = 1/15; 5 min ethanediol exposure, n = 3/34; 10 min ethanediol exposure, n = 14/43). Of the embryos rehydrated directly in HM, six of 65 resulted in viable fetuses and those rehydrated initially in 0.2 m sucrose for 5 or 10 min resulted in nine of 47 and three of 46 fetuses respectively. From these experiments, we conclude that camel embryos can be cryopreserved using ethanediol as a cryoprotectant when the embryos are cooled slowly (to 33°C) before being plunged into liquid nitrogen for storage.

scholarly journals Clonal Micropropagation of Cranberry (Oxycoccus palustris Pers.)

2021 ◽  
Vol 51 (1) ◽  
pp. 67-76
Author(s):  
Sergey Makarov ◽  
Irina Kuznetsova ◽  
Mikhail Upadyshev ◽  
Sergey Rodin ◽  
Anton Chudetsky
Keyword(s):  
Survival Rate ◽  
Nutrient Medium ◽  
Average Length ◽  
Forest Products ◽  
Hybrid Form ◽  
Clonal Micropropagation ◽  
Planting Material ◽  
Total Growth

Introduction. The last decade saw a considerable increase in the demand for European cranberry planting material (Oxyccocus palustris Pers.) among consumers of non-timber forest products. Cranberry possesses high nutritional and medicinal value. Cultivars and hybrids of European cranberry prove extremely productive for plantation growth using the method of clonal micropropagation with revitalized planting material. Study objects and methods. The research featured European cranberry plants of the Dar Kostromy cultivar and its hybrid form 1-15-635. The study focused on the effect of various medications and growth regulators on the biometric profile of European cranberry and its adaptation to non-sterile conditions at all stages of in vivo clonal micropropagation. Results and discussion. During the introduction stage, the highest viability belonged to the explants treated with AgNO3 (95–96%) and Lizoformin 3000 (5%) as the main sterilizing solutions at a 10-min exposure and a 5% solution of Ecosterilizer (1:1) at a 20-min exposure (90–95%). During the micropropagation proper, the number, average length, and total growth of shoots increased as the concentration of cytokinin 2ip in the WPM 1/4 nutrient medium rose from 1.0 to 5.0 mg/L. At the stage of in vitro rooting, the maximal number, average length, and total growth of roots in regenerated plants for both cultivars were observed when Kornerost 5.0 mg/L was added to the WPM 1/4 nutrient medium. At the stage of adaptation to in vivo conditions, Micogel 0.2 mg/L contributed to the highest survival rate (94–100%). Conclusion. During clonal micropropagation in vitro, the biometric profile of European cranberry (Oxyccocus palustris Pers.) and its survival rate under non-sterile conditions in vivo proved to depend on various growth-regulating substances and their concentrations.

scholarly journals TINOSPORA CORDIFOLIA AQUEOUS EXTRACT AMELIORATES THE SYSTEMIC INFECTION OF ASPERGILLUS FUMIGATUS IN BALB/C MICE

2019 ◽  
pp. 525-528 ◽  
Author(s):  
MASOOD A KHAN
Keyword(s):  
Survival Rate ◽  
Antifungal Activity ◽  
Aspergillus Fumigatus ◽  
Aqueous Extract ◽  
Survival Data ◽  
Systemic Infection ◽  
Tinospora Cordifolia ◽  
Fungal Burden

Objective: The present study was aimed to assess the antifungal activity of Tinospora cordifolia aqueous extract (TCAE) against Aspergillus fumigatus infection. Methods: TCAE was tested for in vitro antifungal activity against the isolates of A. fumigatus, Aspergillus flavus, and Aspergillus niger. To evaluate in vivo activity, various doses (10, 25, and 50 mg/kg) of TCAE were orally administered in A. fumigatus-infected mice for 7 days. The combination of prophylactic and therapeutic effect of TCAE was assessed by pre-treating the mice with 10 mg/kg of TCAE for 3 consecutive days before exposing them to A. fumigatus. Mice were treated with 10, 25, and 50 mg/kg doses of TCAE for 7 consecutive days’ post-A. fumigatus infection. The effectiveness of TCAE was evaluated by monitoring the survival rate and assessing the fungal burden in the kidney of the treated mice. Results: A. fumigatus-infected mice treated with TCAE at the doses of 25 and 50 mg/kg exhibited 50% and 20% survival rate, respectively, observed on day 40 post-treatment. Like to the survival data, the fungal burden was also found to be the lowest in the kidney of mice treated with TCAE at a dose of 50 mg/kg. The results showed that pre-treatment with TCAE (10 mg/kg) followed by post-infection treatment with 10, 25, and 50 mg/kg of TCAE for 7 days resulted in 40%, 50%, and 70% survival rate, respectively. Conclusions: These results suggest that TCAE may potentially be considered for its possible use in the treatment of the systemic infection of A. fumigatus.

scholarly journals Dasabuvir Suppresses Esophageal Squamous Cell Carcinoma Growth As a Novel ROCK1 Inhibitor

2021 ◽  
Author(s):  
Xinning Liu ◽  
Yanan Jiang ◽  
Hao Zhou ◽  
Mingzhu Li ◽  
Zhuo Bao ◽  
...  
Keyword(s):  
Cell Cycle ◽  
Squamous Cell Carcinoma ◽  
Survival Rate ◽  
Esophageal Squamous Cell Carcinoma ◽  
Cell Carcinoma ◽  
Squamous Cell ◽  
Inhibitory Effect ◽  
Kinase Assay

Abstract Background: Esophageal squamous cell carcinoma (ESCC) is a high recurrence rate of upper-digestive cancer with a low 5-year survival rate. Therefore, there is an urgent need for effective chemopreventive drugs that can extend the survival rate of patients. Through screening of FDA-approved drugs, dasabuvir was found to suppress ESCC proliferation. Methods: Cell number count assay was used to screen for drugs with inhibitory effect on ESCC cells and detect the inhibitory effect of dasabuvir on proliferation of ESCC cells KYSE150 and KYE450. Phosphoproteomics and proteomics were used to investigate the mechanism of dasabuvir inhibiting ESCC. In vitro kinase assay was used to verify the inhibition of extracellular signal-regulated kinase 1/2 (ERK1/2) activation by ROCK1 by dasabuvir. The PDX model was used to test the inhibitory effect of dasabuvir on ESCC in vivo.Results: In this study, we found that dasabuvir is a novel inhibitor of Rho-associated protein kinase 1 (ROCK1). Dasabuvir inhibited the growth of the KYSE150 and KYSE450 ESCC cell lines in a time and dose-dependent manner and arrested cell cycle at the G0/G1 phase. The antitumor activity was validated in vivo using a patient-derived xenograft tumor model in mice. Dasabuvir inhibited the activation of ERK1/2 by ROCK1 and downregulated cyclin-dependent kinase 4 (CDK4) and cyclin D1 expression. Conclusions: These results provide the first evidence that dasabuvir serves as a ROCK1 inhibitor, suppresses ESCC growth in vivo and in vitro, and arrests the cell cycle through the ROCK1/ERK signaling pathway.

scholarly journals Kaempferol Protects Mice from D-GalN/LPS-induced Acute Liver Failure by Regulating the Autophagy Pathway

2020 ◽  
Author(s):  
Yuan Tian ◽  
Feng Ren ◽  
Ling Xu ◽  
Weihua Li ◽  
Mei Liu ◽  
...  
Keyword(s):  
Survival Rate ◽  
Liver Function ◽  
Opposite Effect ◽  
Low Dose ◽  
High Dose ◽  
Severe Liver ◽  
Autophagy Pathway ◽  
Different Doses

Abstract Background Kaempferol, a flavonoid compound present in many edible plants, has been used in traditional medicine and has various biological functions. Acute liver failure (ALF) is a lethal clinical syndrome with severe liver function damage. There are currently no effective treatments for ALF except for liver transplantation. The aim of this study is to explored the mechanisms underlying the therapeutic effect of kaempferol in ALF. Methods The ALF mouse model was established using D-galactosamine (D-GalN, 700 mg/kg)/lipopolysaccharide (LPS, 10 µg/kg). Two hours before the administration of D-GalN/LPS, different group of mice were pretreated according different doses of kaempferol, 6 hours after injection of D-GalN/LPS, and then killed. The survival rate, liver function and inflammatory cytokine levels were assessed. It was determined whether kaempferol pretreatment protected hepatocytes from ALF induced by D-GalN/LPS via autophagy pathway in vivo and in vitro. Results Pretreatment with a high dose of kaempferol significantly decreased the survival rate and increased severe liver damage; however, pretreatment with a low dose of kaempferol showed the opposite effect. Furthermore, pretreatment with a high dose of kaempferol augment the levels of proinflammatory cytokines and markers of the MAPK signaling pathway, while pretreatment with a low dose of kaempferol showed the opposite effect. In addition, pretreatment with a high dose of kaempferol decreased autophagy, but pretreatment with a low dose of kaempferol increased autophagy in vivo and in vitro. It was also proved that pretreatment with 3-methyadenine (3- MA) or Atg7 siRNA to inhibit autophagy partially negated the hepatoprotective effect of kaempferol (5 mg/kg) pretreatment in ALF mice induced by D-GalN/LPS. Conclusions Our findings demonstrate that effects of different doses of kaempferol on D-GalN/LPS-induced ALF is remarkably different by regulating the autophagy pathway. Therefore, we should consider selecting the optimal dose of kaempferol as a potential treatment method for patients with ALF.

47 CRYOPRESERVATION OF BOVINE GERM CELL USING ANTIFREEZE POLYAMINO-ACID (CARBOXYLATED POLY-L-LYSINE)

2017 ◽  
Vol 29 (1) ◽  
pp. 131
Author(s):  
T. Fujikawa ◽  
C. Kubota ◽  
T. Ando ◽  
S. Imamura ◽  
M. Tokumaru ◽  
...  
Keyword(s):  
Survival Rate ◽  
Germ Cell ◽  
Embryo Transfer ◽  
Conception Rate ◽  
Control Group ◽  
Vitro Fertilization ◽  
Polyamino Acid ◽  
Significant Difference

Carboxylated poly-l-lysine (CPLL) is an ampholytic polymer compound, and it is obtained by converting 65% amino groups to carboxyl groups after synthesising ε-poly-l-lysine aqueous solution and succinic anhydride. CPLL has cryoprotective property similar to antifreeze protein, and addition of CPLL into cryopreservation medium improves the post-thaw survival rate of cells and embryos. In this research, we examined the effectiveness of CPLL as a bovine germ cell cryoprotective material. In experiment 1 (in sperm), the conventional cryopreservation medium used for control group was consisted of 6.5% (vol/vol) glycerin, and the cryopreservation medium used for CPLL group was consisted of 3.25% (vol/vol) glycerin and 0.5% CPLL (wt/vol). The post-thaw survival and motility were assessed by using Sperm Motility Analysis System (DITECT Corp., Tokyo, Japan). There was no significant difference for post-thaw survival rate and motility (control v. CPLL; 98.8% v. 96.6% and 69.7% v. 62.2%, respectively). Artificial insemination was carried out in 65 cows (control v. CPLL; 34 v. 31), and the conception rate of the CPLL group was higher than that of the control group (80.6% v. 67.6%; P = 0.23). In experiment 2 (embryos), the conventional cryopreservation medium used for control group was consisted of 5% (vol/vol) ethylene glycol and 6% (vol/vol) propylene glycol in PBS. In the CPLL group, 7% (wt/vol) CPLL was added to the conventional medium. In vitro fertilization embryos were cryopreserved at Day 7 and Day 8. There was no significant difference in survival rate at 0, 24, and 48 h and hatched rate until 72 h after thawing (control v. CPLL: 93.6% v. 93.2%, 69.0% v. 64.7%, 56.1% v. 56.3%, 12.9% v. 10.2%, respectively). Embryos obtained by superovulation treatment and in vivo fertilization at Day 7 were cryopreserved using above 2 media, and transferred non-surgically into synchronized recipient cows (1 embryo per animal). Embryo transfer (ET) was carried out in 81 cows (control v. CPLL: 31 v. 50), and recipients were diagnosed for pregnancy ultrasonically 50 days after embryo transfer. Conception rate of CPLL group was higher than control group (50.0% v. 29.0%; P = 0.063). In both experiments, the significant differences between control group and CPLL group were determined by chi-squared test. The effectiveness of CPLL in cells and embryos has been reported; however, there is no report using CPLL in bovine germ cells. In this research, CPLL improved the conception rate of AI and ET, probably due to its low toxicity and protection of the cell membrane. These results suggest that CPLL is available as a new cryoprotective material for bovine sperm and embryo in slow freezing methods.

Sign in / Sign up

Export Citation Format

Share Document